A pressure-sensitive non-curing rubber asphalt waterproof coating for normal temperature construction and its preparation method

Abstract

The present invention provides a pressure-sensitive adhesive non-curing rubber asphalt waterproof coating that can be constructed at room temperature. The formula includes 100 parts by mass of petroleum asphalt, 20-30 parts by mass of rock asphalt, 20-40 parts by mass of mixed rubber modifier, 10-20 parts by mass of tackifying resin, 10-15 parts by mass of polyisobutylene, 1-2 parts by mass of thickener, 20-30 parts by mass of rubber softening oil, 10-15 parts by mass of naphthenic oil, 20-30 parts by mass of filler, 2-5 parts by mass of flame retardant, 1-2 parts by mass of antioxidant, and 1-2 parts by mass of high-temperature modifier. It can realize the cold construction process of non-curing rubber asphalt, and the coating can be applied by brushing after stirring to a flowable state without heating, thereby avoiding the common cold construction non-curing material from being thoroughly cured after construction, forming a whole with the base surface and adhesive material, and being unable to realize the characteristics of non-curing coating never curing, high creep property, strong permeability and strong base deformation adaptability.

Description

Technical Field

[0001] The invention relates to a pressure-sensitive non-curing rubber asphalt waterproof coating which can be constructed at room temperature and belongs to the field of waterproof coating manufacturing. Technical Background

[0002] Non-curing rubber asphalt waterproof coating is a kind of waterproof coating that can be used alone as a thick coating as a waterproof layer, or it can be used in combination with other coatings and roll materials as a system waterproofing project. Due to its excellent performance advantages, high permeability and non-curing characteristics, it is increasingly valued by waterproofing customers and construction units. At present, the use of non-curing asphalt-based coatings on the market has become more and more extensive, but there are also certain application problems in the use of this coating. For example, the high viscosity and non-curing formula system design meets the technical requirements of high creep of the material at room temperature, but the viscosity of the material is very high at room temperature. The high creep makes it impossible to apply the coating at room temperature. The construction process must be heated before operation. The heating of large quantities of asphalt-based coatings will cause environmental pollution such as oil smoke and waste of resources. At the same time, there will be certain construction safety hazards. For this reason, technical personnel in the waterproofing industry are committed to the research and development of non-curing rubber asphalt waterproof coatings that can be sprayed at low temperature or constructed at room temperature. For example, patent number 202010101735.9 introduces a A non-curing rubber asphalt waterproof coating that can be sprayed at low temperature can meet the technical requirements of material spraying construction by heating at a temperature of 70-80°C, but heating construction is still required, which does not solve the fundamental problem. Patent No. 202210187579.1 introduces a solvent-free, one-component, room-temperature non-curing rubber asphalt waterproof coating. The performance requirements of room-temperature non-curing coatings are achieved by adding bentonite to the system and adopting a formula design of increasing viscosity and improving thixotropy by compounding polymer wax powder and bentonite. However, the main form of achieving room-temperature construction is to add a large amount of thickening and thixotropic raw materials after mixing the main materials rubber oil and aromatic oil. Its mechanism is only to increase the viscosity and thixotropy of the mixed oil with rubber oil / aromatic oil as the main materials, and design a pseudo-sticky oil mixture. The high thixotropic system with oil as the main material does not have the core technical characteristics of high creep, high stress relaxation and self-healing properties of the core of the non-curing rubber asphalt waterproof coating, and the addition of 1-3 parts of asphalt in the patent design scheme does not reflect its necessity.

[0003] Some of the room temperature non-curing products on the market are products that are designed and constructed by adding emulsion to common water-based emulsified asphalt coatings to thicken them instead of non-curing products. They do not have the technical characteristics of non-curing, high creep and high stress relaxation required by non-curing rubber asphalt coatings. Summary of the Invention

[0004] This invention addresses the problem that current non-curing rubber asphalt waterproof coatings cannot be applied at true room temperature. By utilizing a technical solution based on petroleum asphalt and rock asphalt as the main components, and using a tackifying resin, softening oil, naphthenic oil, and rubber as the asphalt modification materials, and through a specific process design, a pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature is produced. This material is relatively viscous at room temperature and exhibits high creep and adhesion properties. High-speed stirring during application provides excellent fluidity, allowing application without heating. Application can be achieved by scraping, rolling, or spraying. The material exhibits a long open time, meeting the open time requirements for materials under typical operating conditions after stirring. Through spraying, scraping, or rolling, the material achieves excellent wetting and bonding with concrete, asphalt-based membranes, polymer emulsion waterproofing coatings, and polymer-based waterproofing membranes (TPO / PVC / HDPE). 2-3 hours after application, it begins to regain high viscosity and high creep properties under pressure, meeting the technical requirements for both flat and vertical surface construction. Vertical applications can be applied in a single application with a thickness of 1.2-1.5mm without runoff. To apply various waterproofing membranes above or outside this coating, simply lay them on top of the waterproof coating. The material can be applied without heating, completely overcoming the technical drawback of non-curing waterproof coatings requiring heating during application.

[0005] In order to achieve the above technical effects, the present invention discloses a pressure-sensitive non-curing rubber asphalt waterproof coating that can be constructed at room temperature.

[0006] A pressure-sensitive, non-curing rubber asphalt waterproof coating that can be applied at room temperature, the formula comprising 100 parts by mass of petroleum asphalt, 20-30 parts by mass of rock asphalt, 20-40 parts by mass of a mixed rubber modifier, 10-20 parts by mass of a tackifying resin, 10-15 parts by mass of polyisobutylene, 1-2 parts by mass of a thickener, 20-30 parts by mass of a rubber softening oil, 10-15 parts by mass of a naphthenic oil, 20-30 parts by mass of a filler, 2-5 parts by mass of a flame retardant, 1-2 parts by mass of an antioxidant, and 1-2 parts by mass of a high-temperature modifier. The mixed rubber modifier is prepared from 100 parts by mass of petroleum asphalt, 10-20 parts by mass of SBS rubber, 20-30 parts by mass of SIS rubber, and 20-30 parts by mass of SBR rubber.

[0007] Preferably, the petroleum asphalt is heavy-duty road petroleum asphalt with a needle penetration of 55-70 and a softening point of 60-80.

[0008] Preferably, the rock asphalt is natural rock asphalt with an ash content of 10%-14%, a needle penetration of less than 10, and a softening point of 80-100°C.

[0009] Preferably, the tackifying resin is a mixture of terpene resin, C5 petroleum resin, C9 petroleum resin and rosin resin, wherein the terpene resin has a softening point of 95-110°C, the C5 petroleum resin has a molecular weight of 1000-1500 and a softening point of 90-110°C, the C9 resin has a molecular weight of 800-1200 and a softening point of 80-100°C, the rosin resin has a molecular weight of 250-350 and a density of 1.32-1.40, and the mixing ratio is 35%-50% for terpene resin and 50%-65% for C5 / C9 / rosin resin.

[0010] Preferably, the polyisobutylene is a low molecular weight polyisobutylene, which is liquid at room temperature and has a molecular weight of 3000-8000.

[0011] Preferably, the thickeners are polyurea thickener and bentonite thickener, and the ratio of polyurea thickener to bentonite thickener is 1:3.

[0012] Preferably, the rubber softening oil is aromatic oil or rubber filling oil with a density of 0.93-0.98 g / cm 3 , viscosity 2000-6000mPa.s, its four-component aromatic hydrocarbon content> 60%, saturated content> 20%. The density of the naphthenic oil is 0.90-0.94g / cm 3 , viscosity 1000-2800mPa.s, saturated hydrocarbon content in the four components >88%.

[0013] Preferably, the filler is 1250 mesh talc or 3000 mesh kaolin, with an oil absorption value of 35-45 ml (linseed oil) / 100 g.

[0014] Preferably, the flame retardant is a magnesium hydroxide or aluminum hydroxide type inorganic flame retardant, the antioxidant is one of BASF tinuvin 770, BASF tinuvin B75, and BHT264, and the high-temperature modifier is polyethylene wax with a softening point of 115°C, or a mixture of polyethylene wax and polypropylene wax, with a mixing ratio of polyethylene wax: polypropylene wax = 3:1.

[0015] Preferably, the SBS rubber is a linear styrene-butadiene-styrene block copolymer with a molecular weight of 80,000-120,000 and a styrene:butadiene block ratio of 30-38:62-70; the SIS rubber is a linear styrene-isoprene-styrene copolymer with a molecular weight of 150,000-300,000 and a styrene:isoprene block ratio of 17-20:80-83; and the SBR rubber is a polystyrene butadiene copolymer with a molecular weight of 30,000-100,000.

[0016] Preferably, the non-curing rubber asphalt waterproof coating is prepared by the following process:

[0017] Step 1: Prepare a mixed rubber modifier. Put the above-mentioned parts by mass of petroleum asphalt into a stirring tank, heat it to a constant temperature of 160±5°C, add the above-mentioned parts by mass of SBR rubber, open the stirring tank and start high-speed shearing. After 20 minutes, heat it to 195±5°C, add the above-mentioned parts by mass of SIS rubber and SBS rubber, maintain the temperature and high-speed shear for 60 minutes, keep it warm and set aside to obtain the above-mentioned mixed rubber modifier.

[0018] Step 2: Add the above-mentioned parts by mass of petroleum asphalt, rock asphalt, polyisobutylene, rubber softening oil, and naphthenic oil to a stirring tank, start stirring and heat to 120±5°C, add the above-mentioned mixed rubber modifier to the stirring tank, start stirring and mixing for 30 minutes, add the above-mentioned parts by mass of antioxidant, flame retardant, thickener, and tackifying resin and continue mixing and stirring for 30 minutes, add the above-mentioned parts by mass of high-temperature modifier and filler, stir and shear at high speed for 30 minutes, and obtain the pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature.

[0019] Step 3: Discharge the material and keep the material temperature at 110-120℃.

[0020] The pressure-sensitive non-curing rubber asphalt waterproof coating that can be constructed at room temperature described in the present invention is prepared through innovative research and verification of the non-curing rubber asphalt waterproof coating system, which can be sprayed, scraped, and rolled after stirring at room temperature. Under the premise of ensuring that the waterproof coating can be constructed at room temperature, the technical characteristics of high viscosity, high creep and high stress relaxation unique to non-curing rubber asphalt coating can also be achieved. When dealing with deformation and damage of the coating waterproof layer caused by factors such as deformation, cracking, bulging, sedimentation, and aging of the base layer or the composite and adhesive materials, an excellent waterproof effect can be guaranteed for a long time. The coating is mainly made of asphalt, softening oil, and rubber material. The coating is a solid with high viscosity and high creep at room temperature. When used, it becomes an easy-to-flow liquid after high-speed stirring. The design of the pressure-sensitive adhesive effect in the material design process improves the viscosity and creep of the material in its normal form, and can have a better full adhesion effect with the base surface and other composite waterproof materials after construction. This product not only solves the problem of conventional non-curing rubber asphalt waterproof coatings requiring heating during application, but also achieves full adhesion with polymer membranes and oil-based polyurethane coatings. The coating's adhesion and creep properties recover rapidly after application, and it possesses excellent permeability and self-healing properties, making it suitable for application on a variety of substrates and promising broad application prospects. DETAILED DESCRIPTION

[0021] Example 1:

[0022] A pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature, consisting of the following components:

[0023] 100 parts by mass of petroleum asphalt

[0024] 25 parts by mass of rock asphalt

[0025] 30 parts by mass of mixed rubber modifier

[0026] 15 parts by mass of tackifying resin

[0027] 12 parts by mass of polyisobutylene

[0028] 2 parts by mass of thickener

[0029] 25 parts by mass of rubber softening oil

[0030] 12 parts by mass of naphthenic oil

[0031] 25 parts by mass of filler

[0032] 4 parts by mass of flame retardant

[0033] 1.5 parts by mass of antioxidant

[0034] 1.5 parts by mass of high temperature modifier

[0035] Wherein, the mixed rubber modifier is composed of the following components

[0036] 100 parts of petroleum asphalt

[0037] 15 parts of SBS rubber

[0038] 25 parts of SIS rubber

[0039] 25 parts of SBR rubber

[0040] The petroleum asphalt is heavy-duty road asphalt with a needle penetration of 60 and a softening point of 67. The rock asphalt is natural rock asphalt with an ash content of 13%, a needle penetration of 6.5, and a softening point of 90°C. The tackifying resin is a mixture of terpene resin and C5 petroleum resin, wherein the terpene resin has a softening point of 100°C, the C5 petroleum resin has a molecular weight of 1200, and a softening point of 102°C, and the mixing ratio is terpene resin: C5 = 35:65. The polyisobutylene is a low molecular weight polyisobutylene that is liquid at room temperature and has a molecular weight of 3500. The thickener is a polyurea-type thickener and a bentonite-type thickener, with a ratio of polyurea: bentonite = 1:3. The rubber softening oil is an aromatic oil with a density of 0.94g / cm 3 , viscosity 3500mPa.s, its four-component aromatic hydrocarbon content is 74%, and its saturated content is 21%. The density of the naphthenic oil is 0.93g / cm 3, viscosity 1500mPa.s, saturated hydrocarbon content in the four components is 90%, the filler is 1250 mesh talc, and the oil absorption value is 37.2ml (linseed oil) / 100g; the flame retardant is magnesium hydroxide, the antioxidant is BASF tinuvin 770, the high-temperature modifier is a mixture of polyethylene wax and polypropylene wax, and the mixing ratio is polyethylene wax: polypropylene wax = 3:1, the SBS rubber is a linear styrene-butadiene-styrene block copolymer with a molecular weight of 95,000 and a styrene:butadiene block ratio of 32:68, the SIS rubber is a linear styrene-isoprene-styrene copolymer with a molecular weight of 200,000 and a styrene:isoprene block ratio of 18:82, and the SBR rubber is a polystyrene butadiene copolymer with a molecular weight of 50,000.

[0041] The non-curing rubber asphalt waterproof coating is prepared by the following process:

[0042] Step 1: preparing a mixed rubber modifier, placing the petroleum asphalt in parts by weight into a stirring tank, heating it to a constant temperature of 160±5°C, adding the SBR rubber in parts by weight, opening the stirring tank and starting high-speed shearing, and then heating it to 195±5°C for 20 minutes, adding the SIS rubber and SBS rubber in parts by weight, maintaining the temperature and high-speed shearing for 60 minutes, keeping the temperature, and setting aside for use, thereby obtaining the mixed rubber modifier;

[0043] Step 2: Add the said parts by mass of petroleum asphalt, rock asphalt, polyisobutylene, rubber softening oil and cyclohexane oil to a mixing tank, start stirring and heat to 120±5°C, add the said parts by mass of the above-mentioned mixed rubber modifier to the mixing tank, start stirring and mix for 30 minutes, add the said parts by mass of antioxidant, flame retardant, thickener and tackifying resin and continue to mix and stir for 30 minutes, add the said parts by mass of high-temperature modifier and filler, stir and shear at high speed for 30 minutes, and obtain the said pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature.

[0044] Step 3: Discharge the material and keep the material temperature at 110-120℃.

[0045] Example 2:

[0046] A pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature, consisting of the following components

[0047] 100 parts by mass of petroleum asphalt

[0048] 30 parts by mass of rock asphalt

[0049] 40 parts by mass of mixed rubber modifier

[0050] 18 parts by mass of tackifying resin

[0051] 14 parts by mass of polyisobutylene

[0052] 1 part by mass of thickener

[0053] 20 parts by mass of rubber softening oil

[0054] 10 parts by mass of naphthenic oil

[0055] 20 parts by mass of filler

[0056] 3 parts by mass of flame retardant

[0057] 1 part by mass of antioxidant

[0058] 1.5 parts by mass of high temperature modifier

[0059] Wherein, the mixed rubber modifier is composed of the following components

[0060] 100 parts of petroleum asphalt

[0061] 20 parts of SBS rubber

[0062] 30 parts of SIS rubber

[0063] 25 parts of SBR rubber

[0064] The petroleum asphalt is heavy-duty road asphalt with a needle penetration of 56 and a softening point of 72. The rock asphalt is natural rock asphalt with an ash content of 13%, a needle penetration of 6.5, and a softening point of 94°C. The tackifying resin is a mixture of terpene resin and C9 petroleum resin, wherein the terpene resin has a softening point of 102°C, the C9 resin has a molecular weight of 1000, and a softening point of 99°C, and the mixing ratio is terpene resin: C9 = 40:60. The polyisobutylene is a low molecular weight polyisobutylene that is liquid at room temperature and has a molecular weight of 6000. The thickener is a polyurea-type thickener and a bentonite-type thickener, with a ratio of polyurea: bentonite = 1:3. The rubber softening oil is a rubber filler oil with a density of 0.94g / cm 3 , viscosity 2500mPa.s, its four-component aromatic hydrocarbon content is 66%, and the saturated content is 28%. The density of the naphthenic oil is 0.90 / cm 3, viscosity 2500mPa.s, the saturated hydrocarbon content in the four components is 92%, the filler is 3000 mesh kaolin, and the oil absorption value is 37ml (linseed oil) / 100g; the flame retardant is a magnesium hydroxide flame retardant, the antioxidant is one of BHT264, the high-temperature modifier is polyethylene wax, and the softening point is 115°C, the SBS rubber is a linear styrene-butadiene-styrene block copolymer with a molecular weight of 100,000 and a styrene:butadiene block ratio of 36:64, the SIS rubber is a linear styrene-isoprene-styrene copolymer with a molecular weight of 200,000 and a styrene:isoprene block ratio of 19:81, and the SBR rubber is a polystyrene butadiene copolymer with a molecular weight of 50,000.

[0065] The non-curing rubber asphalt waterproof coating is prepared by the following process:

[0066] Step 1: Prepare a mixed rubber modifier. Put the above-mentioned parts by mass of petroleum asphalt into a stirring tank, heat it to a constant temperature of 160±5°C, add the above-mentioned parts by mass of SBR rubber, open the stirring tank and start high-speed shearing. After 20 minutes, heat it to 195±5°C, add the above-mentioned parts by mass of SIS rubber and SBS rubber, maintain the temperature and high-speed shear for 60 minutes, keep it warm and set aside to obtain the above-mentioned mixed rubber modifier.

[0067] Step 2: Add the said parts by mass of petroleum asphalt, rock asphalt, polyisobutylene, rubber softening oil and cyclohexane oil to a mixing tank, start stirring and heat to 120±5°C, add the said parts by mass of the above-mentioned mixed rubber modifier to the mixing tank, start stirring and mix for 30 minutes, add the said parts by mass of antioxidant, flame retardant, thickener and tackifying resin and continue to mix and stir for 30 minutes, add the said parts by mass of high-temperature modifier and filler, stir and shear at high speed for 30 minutes, and obtain the said pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature.

[0068] Step 3: Discharge the material and keep the material temperature at 110-120℃.

[0069] Example 3:

[0070] A pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature, mainly composed of the following components

[0071] 100 parts by mass of petroleum asphalt

[0072] 30 parts by mass of rock asphalt

[0073] 35 parts by mass of mixed rubber modifier

[0074] 20 parts by mass of tackifying resin

[0075] 15 parts by mass of polyisobutylene

[0076] 2 parts by mass of thickener

[0077] 20 parts by mass of rubber softening oil

[0078] 15 parts by mass of naphthenic oil

[0079] 30 parts by mass of filler

[0080] 5 parts by mass of flame retardant

[0081] 2 parts by mass of antioxidant

[0082] 2 parts by mass of high temperature modifier

[0083] Wherein, the mixed rubber modifier is composed of the following components

[0084] 100 parts of petroleum asphalt

[0085] 20 parts of SBS rubber

[0086] 30 parts of SIS rubber

[0087] 30 parts of SBR rubber

[0088] The petroleum asphalt is heavy-duty road petroleum asphalt with a needle penetration of 68 and a softening point of 62. The rock asphalt is natural rock asphalt with an ash content of 14%, a needle penetration of 2.6, and a softening point of 90°C. The tackifying resin is a mixture of terpene resin and rosin resin, wherein the terpene resin has a softening point of 100°C, the rosin resin has a molecular weight of 282, and a density of 1.36, and the mixing ratio is terpene resin:rosin resin = 50:50. The polyisobutylene is a low molecular weight polyisobutylene that is liquid at room temperature and has a molecular weight of 3200. The thickener is a polyurea-type thickener and a bentonite-type thickener, with a ratio of polyurea:bentonite = 1:3. The rubber softening oil is an aromatic oil or a rubber filler oil with a density of 0.98g / cm 3 , viscosity 4500mPa.s, its four-component aromatic hydrocarbon content is 72%, and its saturated content is 21%. The density of the naphthenic oil is 0.92g / cm 3, viscosity 1100mPa.s, the saturated hydrocarbon content in the four components is 89%, the filler is 3000 mesh kaolin, and the oil absorption value is 39ml (linseed oil) / 100g; the flame retardant is an aluminum hydroxide type inorganic flame retardant, the antioxidant is one of BHT264, the high-temperature modifier is polyethylene wax, and the softening point is 115°C, the SBS rubber is a linear styrene-butadiene-styrene block copolymer with a molecular weight of 120,000 and a styrene:butadiene block ratio of 38:62, the SIS rubber is a linear styrene-isoprene-styrene copolymer with a molecular weight of 170,000 and a styrene:isoprene block ratio of 20:80, and the SBR rubber is a polystyrene butadiene copolymer with a molecular weight of 75,000.

[0089] The non-curing rubber asphalt waterproof coating is prepared by the following process:

[0090] Step 1: Prepare a mixed rubber modifier. Put the above-mentioned parts by mass of petroleum asphalt into a stirring tank, heat it to a constant temperature of 160±5°C, add the above-mentioned parts by mass of SBR rubber, open the stirring tank and start high-speed shearing. After 20 minutes, heat it to 195±5°C, add the above-mentioned parts by mass of SIS rubber and SBS rubber, maintain the temperature and high-speed shear for 60 minutes, keep it warm and set aside to obtain the above-mentioned mixed rubber modifier.

[0091] Step 2: Add the said parts by mass of petroleum asphalt, rock asphalt, polyisobutylene, rubber softening oil and cyclohexane oil to a mixing tank, start stirring and heat to 120±5°C, add the said parts by mass of the above-mentioned mixed rubber modifier to the mixing tank, start stirring and mix for 30 minutes, add the said parts by mass of antioxidant, flame retardant, thickener and tackifying resin and continue to mix and stir for 30 minutes, add the said parts by mass of high-temperature modifier and filler, stir and shear at high speed for 30 minutes, and obtain the said pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature.

[0092] Step 3: Discharge the material and keep the material temperature at 110-120℃.

[0093] Example 4:

[0094] A pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature, mainly composed of the following components

[0095] 100 parts by mass of petroleum asphalt

[0096] 22 parts by mass of rock asphalt

[0097] 32 parts by mass of mixed rubber modifier

[0098] 12 parts by mass of tackifying resin

[0099] 14 parts by mass of polyisobutylene

[0100] 1.5 parts by mass of thickener

[0101] 22 parts by mass of rubber softening oil

[0102] 11 parts by mass of naphthenic oil

[0103] 28 parts by mass of filler

[0104] 3 parts by mass of flame retardant

[0105] 2 parts by mass of antioxidant

[0106] 2 parts by mass of high temperature modifier

[0107] Wherein, the mixed rubber modifier is composed of the following components

[0108] 100 parts of petroleum asphalt

[0109] 10 parts of SBS rubber

[0110] 28 parts of SIS rubber

[0111] 22 parts of SBR rubber

[0112] The petroleum asphalt is heavy-duty road asphalt with a needle penetration of 58 and a softening point of 74. The rock asphalt is natural rock asphalt with an ash content of 14%, a needle penetration of 2.6, and a softening point of 92°C. The tackifying resin is a mixture of terpene resin and C9 petroleum resin, wherein the terpene resin has a softening point of 108°C, the C9 resin has a molecular weight of 1000, and a softening point of 92°C, and the mixing ratio is terpene resin: C9 = 38:62. The polyisobutylene is a low molecular weight polyisobutylene that is liquid at room temperature and has a molecular weight of 4500. The thickener is a polyurea-type thickener and a bentonite-type thickener, with a ratio of polyurea: bentonite = 1:3. The rubber softening oil is a rubber filling oil with a density of 0.96g / cm 3 , viscosity 2500mPa.s, its four-component aromatic hydrocarbon content is 72%, and its saturated content is 24%. The density of the naphthenic oil is 0.93g / cm 3, viscosity 1500mPa.s, the saturated hydrocarbon content in the four components is 92%, the filler is 1250 mesh talc, and the oil absorption value is 42ml (linseed oil) / 100g; the flame retardant is an aluminum hydroxide type inorganic flame retardant, the antioxidant is BASF tinuvin 770, the high-temperature modifier is a mixture of polyethylene wax and polypropylene wax, and the mixing ratio is polyethylene wax: polypropylene wax = 3:1, the SBS rubber is a linear styrene-butadiene-styrene block copolymer with a molecular weight of 90,000 and a styrene:butadiene block ratio of 35:65, the SIS rubber is a linear styrene-isoprene-styrene copolymer with a molecular weight of 220,000 and a styrene:isoprene block ratio of 18:82, and the SBR rubber is a polystyrene butadiene copolymer with a molecular weight of 45,000.

[0113] The non-curing rubber asphalt waterproof coating is prepared by the following process:

[0114] Step 1: Prepare a mixed rubber modifier. Put the above-mentioned parts by mass of petroleum asphalt into a stirring tank, heat it to a constant temperature of 160±5°C, add the above-mentioned parts by mass of SBR rubber, open the stirring tank and start high-speed shearing. After 20 minutes, heat it to 195±5°C, add the above-mentioned parts by mass of SIS rubber and SBS rubber, maintain the temperature and high-speed shear for 60 minutes, keep it warm and set aside to obtain the above-mentioned mixed rubber modifier.

[0115] Step 2: Add the above-mentioned parts by mass of petroleum asphalt, rock asphalt, polyisobutylene, rubber softening oil, and naphthenic oil to a stirring tank, start stirring and heat to 120±5°C, add the above-mentioned mixed rubber modifier to the stirring tank, start stirring and mixing for 30 minutes, add the above-mentioned parts by mass of antioxidant, flame retardant, thickener, and tackifying resin and continue mixing and stirring for 30 minutes, add the above-mentioned parts by mass of high-temperature modifier and filler, stir and shear at high speed for 30 minutes, and obtain the pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature.

[0116] Step 3: Discharge the material and keep the material temperature at 110-120℃.

[0117] Example 5:

[0118] A pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature, mainly composed of the following components

[0119] 100 parts by mass of petroleum asphalt

[0120] 25 parts by mass of rock asphalt

[0121] 40 parts by mass of mixed rubber modifier

[0122] 12 parts by mass of tackifying resin

[0123] 10 parts by mass of polyisobutylene

[0124] 1 part by mass of thickener

[0125] 25 parts by mass of rubber softening oil

[0126] 12 parts by mass of naphthenic oil

[0127] 25 parts by mass of filler

[0128] 3 parts by mass of flame retardant

[0129] 1.5 parts by mass of antioxidant

[0130] 1.5 parts by mass of high temperature modifier

[0131] Wherein, the mixed rubber modifier is composed of the following components

[0132] 100 parts of petroleum asphalt

[0133] 12 parts of SBS rubber

[0134] 25 parts of SIS rubber

[0135] 25 parts of SBR rubber

[0136] The petroleum asphalt is heavy-duty road asphalt with a needle penetration of 62 and a softening point of 68. The rock asphalt is natural rock asphalt with an ash content of 11%, a needle penetration of 6.8, and a softening point of 89°C. The tackifying resin is a mixture of terpene resin and C5 petroleum resin, wherein the terpene resin has a softening point of 106°C, the C5 petroleum resin has a molecular weight of 1500, and a softening point of 108°C, and the mixing ratio is terpene resin: C5 = 35:65. The polyisobutylene is a low molecular weight polyisobutylene that is liquid at room temperature and has a molecular weight of 7200. The thickener is a polyurea-type thickener and a bentonite-type thickener, with a ratio of polyurea: bentonite = 1:3. The rubber softening oil is a rubber filler oil with a density of 0.97g / cm 3 , viscosity 4500mPa.s, its four-component aromatic hydrocarbon content is 72%, and its saturated content is 24%. The density of the naphthenic oil is 0.93g / cm 3, viscosity 1700mPa.s, the saturated hydrocarbon content in the four components is 90%, the filler is 3000 mesh kaolin, and the oil absorption value is 37ml (linseed oil) / 100g; the flame retardant is an aluminum hydroxide type inorganic flame retardant, the antioxidant is BASF tinuvin B75, the high-temperature modifier is polyethylene wax, and the softening point is 115°C, the SBS rubber is a linear styrene-butadiene-styrene block copolymer with a molecular weight of 80,000 and a styrene:butadiene block ratio of 38:62, the SIS rubber is a linear styrene-isoprene-styrene copolymer with a molecular weight of 250,000 and a styrene:isoprene block ratio of 17:83, and the SBR rubber is a polystyrene butadiene copolymer with a molecular weight of 80,000.

[0137] The non-curing rubber asphalt waterproof coating is prepared by the following process:

[0138] Step 1: Prepare a mixed rubber modifier. Put the above-mentioned parts by mass of petroleum asphalt into a stirring tank, heat it to a constant temperature of 160±5°C, add the above-mentioned parts by mass of SBR rubber, open the stirring tank and start high-speed shearing. After 20 minutes, heat it to 195±5°C, add the above-mentioned parts by mass of SIS rubber and SBS rubber, maintain the temperature and high-speed shear for 60 minutes, keep it warm and set aside to obtain the above-mentioned mixed rubber modifier.

[0139] Step 2: Add the said parts by mass of petroleum asphalt, rock asphalt, polyisobutylene, rubber softening oil and cyclohexane oil to a mixing tank, start stirring and heat to 120±5°C, add the said parts by mass of the above-mentioned mixed rubber modifier to the mixing tank, start stirring and mix for 30 minutes, add the said parts by mass of antioxidant, flame retardant, thickener and tackifying resin and continue to mix and stir for 30 minutes, add the said parts by mass of high-temperature modifier and filler, stir and shear at high speed for 30 minutes, and obtain the said pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature.

[0140] Step 3: Discharge the material and keep the material temperature at 110-120℃.

[0141] Comparative Example 1:

[0142] A non-curing rubber asphalt waterproof coating, comprising the following components:

[0143] 100 parts by mass of petroleum asphalt

[0144] 25 parts by mass of rock asphalt

[0145] 30 parts by mass of mixed rubber modifier

[0146] 2 parts by mass of thickener

[0147] 25 parts by mass of rubber softening oil

[0148] 12 parts by mass of naphthenic oil

[0149] 25 parts by mass of filler

[0150] 4 parts by mass of flame retardant

[0151] 1.5 parts by mass of antioxidant

[0152] 1.5 parts by mass of high temperature modifier

[0153] Wherein, the mixed rubber modifier is composed of the following components

[0154] 100 parts of petroleum asphalt

[0155] 15 parts of SBS rubber

[0156] 25 parts of SIS rubber

[0157] 25 parts of SBR rubber

[0158] The petroleum asphalt is 70# heavy-duty road asphalt with a needle penetration of 60 and a softening point of 67. The rock asphalt is natural rock asphalt with an ash content of 13%, a needle penetration of 6.5, and a softening point of 90°C. The thickeners are polyurea thickeners and bentonite thickeners in a ratio of polyurea to bentonite of 1:3. The rubber softening oil is aromatic oil with a density of 0.94 g / cm 3 , viscosity 3500mPa.s, its four-component aromatic hydrocarbon content is 74%, and its saturated content is 21%. The density of the naphthenic oil is 0.93g / cm 3 , viscosity 1500mPa.s, saturated hydrocarbon content in the four components is 90%, the filler is 1250 mesh talc, and the oil absorption value is 37.2ml (linseed oil) / 100g; the flame retardant is magnesium hydroxide, the antioxidant is BASF tinuvin 770, the high-temperature modifier is a mixture of polyethylene wax and polypropylene wax, and the mixing ratio is polyethylene wax: polypropylene wax = 3:1, the SBS rubber is a linear styrene-butadiene-styrene block copolymer with a molecular weight of 95,000 and a styrene:butadiene block ratio of 32:68, the SIS rubber is a linear styrene-isoprene-styrene copolymer with a molecular weight of 200,000 and a styrene:isoprene block ratio of 18:82, and the SBR rubber is a polystyrene butadiene copolymer with a molecular weight of 50,000.

[0159] The non-curing rubber asphalt waterproof coating is prepared by the following process:

[0160] Step 1: preparing a mixed rubber modifier, placing the petroleum asphalt in parts by weight into a stirring tank, heating it to a constant temperature of 160±5°C, adding the SBR rubber in parts by weight, opening the stirring tank and starting high-speed shearing, and then heating it to 195±5°C for 20 minutes, adding the SIS rubber and SBS rubber in parts by weight, maintaining the temperature and high-speed shearing for 60 minutes, keeping the temperature, and setting aside for use, thereby obtaining the mixed rubber modifier;

[0161] Step 2: Add the above-mentioned parts by mass of petroleum asphalt, rock asphalt, rubber softening oil, and naphthenic oil into a mixing tank, start stirring and heat to 120±5°C, add the above-mentioned mixed rubber modifier into the mixing tank, start stirring and mixing for 30 minutes, add the above-mentioned parts by mass of antioxidant, flame retardant, and thickener, continue mixing and stirring for 30 minutes, add the above-mentioned parts by mass of filler, stir and shear at high speed for 30 minutes, and obtain the waterproof coating.

[0162] Step 3: Discharge the material and keep the material temperature at 110-120℃.

[0163] Comparative Example 2:

[0164] A non-curing rubber asphalt waterproof coating, comprising the following components:

[0165] 125 parts by mass of petroleum asphalt

[0166] 30 parts by mass of mixed rubber modifier

[0167] 15 parts by mass of tackifying resin

[0168] 12 parts by mass of polyisobutylene

[0169] 2 parts by mass of thickener

[0170] 25 parts by mass of rubber softening oil

[0171] 12 parts by mass of naphthenic oil

[0172] 25 parts by mass of filler

[0173] 4 parts by mass of flame retardant

[0174] 1.5 parts by mass of antioxidant

[0175] 1.5 parts by mass of high temperature modifier

[0176] Wherein, the mixed rubber modifier is composed of the following components

[0177] 100 parts of petroleum asphalt

[0178] 15 parts of SBS rubber

[0179] 25 parts of SIS rubber

[0180] 25 parts of SBR rubber

[0181] The petroleum asphalt is heavy-duty road asphalt with a needle penetration of 60 and a softening point of 67. The tackifying resin is a mixture of terpene resin and C5 petroleum resin, wherein the terpene resin has a softening point of 100°C, the C5 petroleum resin has a molecular weight of 1200 and a softening point of 102°C, and the mixing ratio is terpene resin: C5 = 35:65. The polyisobutylene is a low molecular weight polyisobutylene that is liquid at room temperature and has a molecular weight of 3500. The thickener is a polyurea thickener and a bentonite thickener, with a ratio of polyurea: bentonite = 1:3. The rubber softening oil is an aromatic oil with a density of 0.94g / cm 3 , viscosity 3500mPa.s, its four-component aromatic hydrocarbon content is 74%, and its saturated content is 21%. The density of the naphthenic oil is 0.93g / cm 3 , viscosity 1500mPa.s, saturated hydrocarbon content in the four components is 90%, the filler is 1250 mesh talc, and the oil absorption value is 37.2ml (linseed oil) / 100g; the flame retardant is magnesium hydroxide, the antioxidant is BASF tinuvin 770, the high-temperature modifier is a mixture of polyethylene wax and polypropylene wax, and the mixing ratio is polyethylene wax: polypropylene wax = 3:1, the SBS rubber is a linear styrene-butadiene-styrene block copolymer with a molecular weight of 95,000 and a styrene:butadiene block ratio of 32:68, the SIS rubber is a linear styrene-isoprene-styrene copolymer with a molecular weight of 200,000 and a styrene:isoprene block ratio of 18:82, and the SBR rubber is a polystyrene butadiene copolymer with a molecular weight of 50,000.

[0182] The non-curing rubber asphalt waterproof coating is prepared by the following process:

[0183] Step 1: preparing a mixed rubber modifier, placing the petroleum asphalt in parts by weight into a stirring tank, heating it to a constant temperature of 160±5°C, adding the SBR rubber in parts by weight, opening the stirring tank and starting high-speed shearing, and then heating it to 195±5°C for 20 minutes, adding the SIS rubber and SBS rubber in parts by weight, maintaining the temperature and high-speed shearing for 60 minutes, keeping the temperature, and setting aside for use, thereby obtaining the mixed rubber modifier;

[0184] Step 2: Add the said parts by mass of petroleum asphalt, rock asphalt, polyisobutylene, rubber softening oil and cyclohexane oil to a stirring tank, start stirring and heat to 120±5°C, add the said parts by mass of the above-mentioned mixed rubber modifier to the stirring tank, start stirring and mix for 30 minutes, add the said parts by mass of antioxidant, flame retardant, thickener and tackifying resin and continue to mix and stir for 30 minutes, add the said parts by mass of high temperature modifier and filler, stir and shear at high speed for 30 minutes, and obtain the said non-curing rubber asphalt waterproof coating.

[0185] Step 3: Discharge the material and keep the material temperature at 110-120℃.

[0186] Comparative Example 3:

[0187] A non-curing rubber asphalt waterproof coating, consisting of the following components

[0188] 100 parts by mass of petroleum asphalt

[0189] 30 parts by mass of rock asphalt

[0190] 40 parts by mass of mixed rubber modifier

[0191] 18 parts by mass of tackifying resin

[0192] 14 parts by mass of polyisobutylene

[0193] 1 part by mass of thickener

[0194] 20 parts by mass of rubber softening oil

[0195] 10 parts by mass of naphthenic oil

[0196] 20 parts by mass of filler

[0197] 3 parts by mass of flame retardant

[0198] 1 part by mass of antioxidant

[0199] 1.5 parts by mass of high temperature modifier

[0200] Wherein, the mixed rubber modifier is composed of the following components

[0201] 100 parts of petroleum asphalt

[0202] 20 parts of SBS rubber

[0203] 30 parts of SIS rubber

[0204] 25 parts of SBR rubber

[0205] The petroleum asphalt is heavy-duty road asphalt with a needle penetration of 56 and a softening point of 72. The rock asphalt is natural rock asphalt with an ash content of 13%, a needle penetration of 6.5, and a softening point of 94°C. The tackifying resin is a mixture of terpene resin and C9 petroleum resin, wherein the terpene resin has a softening point of 102°C, the C9 resin has a molecular weight of 1000, and a softening point of 99°C, and the mixing ratio is terpene resin: C9 = 40:60. The polyisobutylene is a low molecular weight polyisobutylene that is liquid at room temperature and has a molecular weight of 6000. The thickener is a polyurea-type thickener and a bentonite-type thickener, with a ratio of polyurea: bentonite = 1:3. The rubber softening oil is a rubber filler oil with a density of 0.94g / cm 3 , viscosity 2500mPa.s, its four-component aromatic hydrocarbon content is 66%, and the saturated content is 28%. The density of the naphthenic oil is 0.90 / cm 3 , viscosity 2500mPa.s, the saturated hydrocarbon content in the four components is 92%, the filler is 3000 mesh kaolin, and the oil absorption value is 37ml (linseed oil) / 100g; the flame retardant is a magnesium hydroxide flame retardant, the antioxidant is one of BHT264, the high-temperature modifier is polyethylene wax, and the softening point is 115°C, the SBS rubber is a linear styrene-butadiene-styrene block copolymer with a molecular weight of 100,000 and a styrene:butadiene block ratio of 36:64, the SIS rubber is a linear styrene-isoprene-styrene copolymer with a molecular weight of 200,000 and a styrene:isoprene block ratio of 19:81, and the SBR rubber is a polystyrene butadiene copolymer with a molecular weight of 50,000.

[0206] The non-curing rubber asphalt waterproof coating is prepared by the following process:

[0207] Step 1: Add the said parts by mass of petroleum asphalt, rock asphalt, polyisobutylene, rubber softening oil and cyclohexane oil to a stirring tank, start stirring and heat to 120±5°C, add the said parts by mass of the above-mentioned mixed rubber modifier directly to the stirring tank in proportion, start stirring and mix for 30 minutes, add the said parts by mass of antioxidant, flame retardant, thickener and tackifying resin and continue to mix and stir for 30 minutes, add the said parts by mass of high temperature modifier and filler, stir and shear at high speed for 30 minutes, and obtain the said non-curing rubber asphalt waterproof coating.

[0208] Step 2: Discharge the material and keep the material temperature at 110-120℃.

[0209] Comparative Example 4:

[0210] A non-curing rubber asphalt waterproof coating, mainly composed of the following components: 100 parts by mass of petroleum asphalt

[0211] 22 parts by mass of rock asphalt

[0212] 32 parts by mass of mixed rubber modifier

[0213] 12 parts by mass of tackifying resin

[0214] 14 parts by mass of polyisobutylene

[0215] 1.5 parts by mass of thickener

[0216] 22 parts by mass of rubber softening oil

[0217] 11 parts by mass of naphthenic oil

[0218] 28 parts by mass of filler

[0219] 3 parts by mass of flame retardant

[0220] 2 parts by mass of antioxidant

[0221] 2 parts by mass of high temperature modifier

[0222] Wherein, the mixed rubber modifier is composed of the following components

[0223] 100 parts of petroleum asphalt

[0224] 20 parts of SBS rubber

[0225] 40 parts of SBR rubber

[0226] The petroleum asphalt is heavy-duty road asphalt with a needle penetration of 58 and a softening point of 74. The rock asphalt is natural rock asphalt with an ash content of 14%, a needle penetration of 2.6, and a softening point of 92°C. The tackifying resin is a mixture of terpene resin and C9 petroleum resin, wherein the terpene resin has a softening point of 108°C, the C9 resin has a molecular weight of 1000, and a softening point of 92°C, and the mixing ratio is terpene resin: C9 = 38:62. The polyisobutylene is a low molecular weight polyisobutylene that is liquid at room temperature and has a molecular weight of 4500. The thickener is a polyurea-type thickener and a bentonite-type thickener, with a ratio of polyurea: bentonite = 1:3. The rubber softening oil is a rubber filling oil with a density of 0.96g / cm 3 , viscosity 2500mPa.s, its four-component aromatic hydrocarbon content is 72%, and its saturated content is 24%. The density of the naphthenic oil is 0.93g / cm 3, viscosity 1500mPa.s, the saturated hydrocarbon content in the four components is 92%, the filler is 1250 mesh talc powder, and the oil absorption value is 42ml (linseed oil) / 100g; the flame retardant is an aluminum hydroxide type inorganic flame retardant, the antioxidant is BASF tinuvin 770, the high-temperature modifier is a mixture of polyethylene wax and polypropylene wax, and the mixing ratio is polyethylene wax: polypropylene wax = 3:1, the SBS rubber is a linear styrene-butadiene-styrene block copolymer with a molecular weight of 90,000 and a styrene:butadiene block ratio of 35:65, and the SBR rubber is a polystyrene butadiene copolymer with a molecular weight of 45,000.

[0227] The non-curing rubber asphalt waterproof coating is prepared by the following process:

[0228] Step 1: Prepare a mixed rubber modifier, put the above-mentioned parts by mass of petroleum asphalt into a stirring tank, heat it to a constant temperature of 160±5°C, add the above-mentioned parts by mass of SBR rubber, open the stirring tank and start high-speed shearing, continue for 20 minutes, then raise the temperature to 195±5°C, add the above-mentioned parts by mass of SBS rubber, maintain the temperature and high-speed shear for 60 minutes, keep warm and set aside to obtain the above-mentioned mixed rubber modifier.

[0229] Step 2: Add the above-mentioned parts by mass of petroleum asphalt, rock asphalt, polyisobutylene, rubber softening oil, and naphthenic oil to a stirring tank, start stirring and heat to 120±5°C, add the above-mentioned mixed rubber modifier to the stirring tank, start stirring and mixing for 30 minutes, add the above-mentioned parts by mass of antioxidant, flame retardant, thickener, and tackifying resin and continue mixing and stirring for 30 minutes, add the above-mentioned parts by mass of high-temperature modifier and filler, stir and shear at high speed for 30 minutes, and obtain the non-curing rubber asphalt waterproof coating.

[0230] Step 3: Discharge the material and keep the material temperature at 110-120℃.

[0231] Comparative Example 5:

[0232] A non-curing rubber asphalt waterproof coating, mainly composed of the following components: 100 parts by mass of petroleum asphalt

[0233] 22 parts by mass of rock asphalt

[0234] 32 parts by mass of mixed rubber modifier

[0235] 12 parts by mass of tackifying resin

[0236] 14 parts by mass of polyisobutylene

[0237] 1.5 parts by mass of thickener

[0238] 22 parts by mass of rubber softening oil

[0239] 11 parts by mass of naphthenic oil

[0240] 28 parts by mass of filler

[0241] 3 parts by mass of flame retardant

[0242] 2 parts by mass of antioxidant

[0243] 2 parts by mass of high temperature modifier

[0244] Wherein, the mixed rubber modifier is composed of the following components

[0245] 100 parts of petroleum asphalt

[0246] 10 parts of SBS rubber

[0247] 22 parts of SBR rubber

[0248] The petroleum asphalt is heavy-duty road asphalt with a needle penetration of 58 and a softening point of 74. The rock asphalt is natural rock asphalt with an ash content of 14%, a needle penetration of 2.6, and a softening point of 92°C. The tackifying resin is a mixture of terpene resin and C9 petroleum resin, wherein the terpene resin has a softening point of 108°C, the C9 resin has a molecular weight of 1000, and a softening point of 92°C, and the mixing ratio is terpene resin: C9 = 38:62. The polyisobutylene is a low molecular weight polyisobutylene that is liquid at room temperature and has a molecular weight of 4500. The thickener is a polyurea-type thickener and a bentonite-type thickener, with a ratio of polyurea: bentonite = 1:3. The rubber softening oil is a rubber filling oil with a density of 0.96g / cm 3 , viscosity 2500mPa.s, its four-component aromatic hydrocarbon content is 72%, and its saturated content is 24%. The density of the naphthenic oil is 0.93g / cm 3 , viscosity 1500mPa.s, the saturated hydrocarbon content in the four components is 92%, the filler is 1250 mesh talc powder, and the oil absorption value is 42ml (linseed oil) / 100g; the flame retardant is an aluminum hydroxide type inorganic flame retardant, the antioxidant is BASF tinuvin 770, the high-temperature modifier is a mixture of polyethylene wax and polypropylene wax, and the mixing ratio is polyethylene wax: polypropylene wax = 3:1, the SBS rubber is a linear styrene-butadiene-styrene block copolymer with a molecular weight of 90,000 and a styrene:butadiene block ratio of 35:65, and the SBR rubber is a polystyrene butadiene copolymer with a molecular weight of 45,000.

[0249] The non-curing rubber asphalt waterproof coating is prepared by the following process:

[0250] Step 1: Prepare a mixed rubber modifier, put the above-mentioned parts by mass of petroleum asphalt into a stirring tank, heat it to a constant temperature of 160±5°C, add the above-mentioned parts by mass of SBR rubber, open the stirring tank and start high-speed shearing, continue for 20 minutes, then raise the temperature to 195±5°C, add the above-mentioned parts by mass of SBS rubber, maintain the temperature and high-speed shear for 60 minutes, keep warm and set aside to obtain the above-mentioned mixed rubber modifier.

[0251] Step 2: Add the above-mentioned parts by mass of petroleum asphalt, rock asphalt, polyisobutylene, rubber softening oil, and naphthenic oil to a stirring tank, start stirring and heat to 120±5°C, add the above-mentioned mixed rubber modifier to the stirring tank, start stirring and mixing for 30 minutes, add the above-mentioned parts by mass of antioxidant, flame retardant, thickener, and tackifying resin and continue mixing and stirring for 30 minutes, add the above-mentioned parts by mass of high-temperature modifier and filler, stir and shear at high speed for 30 minutes, and obtain the non-curing rubber asphalt waterproof coating.

[0252] Step 3: Discharge the material and keep the material temperature at 110-120℃.

[0253] Comparative Example 6

[0254] A non-curing rubber asphalt waterproof coating mainly composed of the following components:

[0255] 125 parts by mass of petroleum asphalt

[0256] 6 parts of SBS rubber

[0257] 9 parts of SBR rubber

[0258] 2 parts by mass of thickener

[0259] 45 parts by mass of rubber softening oil

[0260] 35 parts by mass of filler

[0261] 2 parts by mass of flame retardant

[0262] 1.5 parts by mass of antioxidant

[0263] 2.5 parts by mass of high temperature modifier

[0264] The petroleum asphalt is 70# heavy road petroleum asphalt with a needle penetration of 55-70 and a softening point of 60-80. The thickener is a bentonite thickener, and the rubber softening oil is a rubber filler oil with a density of 0.96g / cm 3The viscosity is 2600 mPa.s, the four-component aromatic hydrocarbon content is 66%, and the saturated content is 32%. The filler is 1250 mesh talc with an oil absorption value of 41 ml (linseed oil) / 100 g. The flame retardant is magnesium hydroxide, an inorganic flame retardant. The antioxidant is BASFtinuvin 770. The high-temperature modifier is polyethylene wax with a softening point of 115°C. The SBS rubber is a linear styrene-butadiene-styrene block copolymer with a molecular weight of 80,000-120,000, a styrene:butadiene block ratio of 30-38:62-70, a molecular weight of 150,000-300,000, and a styrene:isoprene block ratio of 17-20:80-83. The SBR rubber is a polystyrene butadiene copolymer with a molecular weight of 30,000-100,000.

[0265] The non-curing rubber asphalt waterproof coating is prepared by the following process:

[0266] Step 1: Add the above-mentioned parts by mass of petroleum asphalt and rubber softening oil into a mixing tank, start stirring and heat to 165±5°C, add the above-mentioned parts by mass of SBR rubber, stir and shear at high speed for 30 minutes, heat to 190±5°C, add the above-mentioned parts by mass of SBS rubber, maintain the stirring speed and continue stirring for 1 hour, then add the above-mentioned parts by mass of flame retardant, antioxidant and high-temperature modifier, continue stirring for 30 minutes, then add thickener and filler. Stir and shear at high speed for 30 minutes to obtain the above-mentioned non-curing rubber asphalt waterproof coating.

[0267] Step 2: Discharge the material and keep the material temperature at 110-120℃.

[0268] Comparative Examples 7 and 8 are commercially available non-curing rubber asphalt waterproof coatings constructed at room temperature, while Comparative Examples 9 and 10 are commercially available non-curing rubber asphalt waterproof coatings constructed after conventional high-temperature heating. The implementation standard is JC / T 2428-2017. Non-curing rubber asphalt waterproof coatings

[0269]

[0270]

[0271]

[0272] The above table shows the performance verification results of the embodiments and comparative examples. It can be seen from the above table that Examples 1-5 are pressure-sensitive non-curing rubber asphalt waterproof coatings that can be constructed at room temperature and are designed and processed using the technical solution described in the patent of the present invention. Not only can the normal construction of the waterproof coating be achieved at room temperature without heating, but the excellent adhesion and creep properties of the material can also be ensured. The material has good stress relaxation properties, permeability, and self-healing properties, and has excellent adaptability to the base layer. It also has good full adhesion with the polyurethane coating and the polymer waterproof membrane base layer.

[0273] Comparative Example 1 Compared with Example 1, the high-temperature modifier and polyisobutylene were removed from the formula design. The waterproof coating designed and prepared can be applied at room temperature, but the low-temperature performance of the material is poor and the viscosity is poor. It is impossible to achieve cohesive failure under full adhesion with different base surfaces, and the stress relaxation is reduced. After thermal aging, the cohesion of the material becomes larger, and the stress relaxation is reduced and unqualified, which does not meet the material design requirements.

[0274] In Comparative Example 2 and Example 1, the rock asphalt was removed from the material and replaced with an equal amount of 70# asphalt. The cohesion of the prepared product was poor, and the high temperature resistance and self-healing properties of the material were intertwined, which did not meet the standard requirements.

[0275] Comparative Example 3, compared to Example 2, employed the same material design ratios, but without the prefabrication process for mixing the rubber modifier. Instead, the mixed rubber modifier was added directly during processing according to the proportions. The resulting finished product exhibited significant rubber aggregates, such as lumps and hard blocks, significantly reducing the material's high- and low-temperature performance and elongation. Furthermore, these aggregates increased the viscosity of the coating, preventing normal application at room temperature and requiring heating to above 90°C. Furthermore, the material exhibited reduced adhesion to various substrates, exhibited excessive cohesion, a low stress relaxation ratio, and exhibited poor creep properties.

[0276] Compared with Example 4, Comparative Example 4 removes SIS from the mixed rubber modifier in the formula and replaces it with SBR rubber and SBS rubber in equal proportions. The cohesion of the material is significantly improved, the viscosity increases, and room temperature construction cannot be achieved. The bonding effect with various substrates is poor, all of which are interface damage. Due to the high cohesion of the rubber, the material has good elasticity, and the stress relaxation and creep properties are poor.

[0277] Comparative Example 5, compared to Example 4, removes SIS from the mixed rubber modifier. While the material can be applied at room temperature, it exhibits poor adhesion to various substrates, with interfacial failure occurring on all but conventional, untreated, dry substrates. High rubber cohesion results in good elasticity, but poor stress relaxation and creep properties. The material exhibits moderate viscosity, poor creep, and self-healing properties that do not meet standard requirements.

[0278] Comparative Example 6 is a waterproof coating prepared using the common high-temperature construction type non-curing rubber asphalt waterproof coating formula and processing technology. The material needs to be heated to above 130°C to reach the construction viscosity requirements for spraying, scraping or rolling, and does not have a good bonding effect with the polyurethane coating and the polymer waterproof roll coating.

[0279] Comparing Comparative Examples 7-10 with Examples 1-5 reveals that the crucial low-cohesion, strong interfacial bonding, strong creep resistance, and high stress relaxation properties of non-curing waterproof coatings are not achieved by conventional commercially available low-temperature non-curing coatings. Only commercially available high-temperature non-curing coatings can achieve these properties, but these applications typically require an application temperature above 140°C. Compared to conventional composite waterproofing layers, the bond strength between the polyurethane coating and the polymer membrane base layer is inferior to that of both commercially available room-temperature and high-temperature non-curing coatings.

[0280] The non-curing construction at room temperature designed by the present invention not only ensures the material's excellent adhesion and advantages of high creep, self-healing, strong substrate adaptability and strain resistance, but also can be constructed at room temperature without heating, and can have excellent bonding effects with common polymer coatings.

[0281] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature, characterized in that Contains: 100 parts by mass of petroleum asphalt, 20-30 parts by mass of rock asphalt, 20-40 parts by mass of mixed rubber modifier, 10-20 parts by mass of tackifying resin, 10-15 parts by mass of polyisobutylene, 1-2 parts by mass of thickener, 20-30 parts by mass of rubber softening oil, 10-15 parts by mass of naphthenic oil, 20-30 parts by mass of filler, 2-5 parts by mass of flame retardant, 1-2 parts by mass of antioxidant, and 1-2 parts by mass of high-temperature modifier; The mixed rubber modifier is prepared from 100 parts by mass of petroleum asphalt, 10-20 parts by mass of SBS rubber, 20-30 parts by mass of SIS rubber, and 20-30 parts by mass of SBR rubber. The preparation method of the mixed rubber modifier comprises the following steps: placing the petroleum asphalt in parts by mass into a stirring tank, heating the mixture to a constant temperature of 160±20° C., adding the SBR rubber in parts by mass, opening the stirring tank and starting high-speed shearing, heating the mixture to 195±15° C. after 20 minutes, adding the SIS rubber and SBS rubber in parts by mass, maintaining the temperature and performing high-speed shearing for 30-90 minutes, keeping the temperature, and setting aside for use, thereby obtaining the mixed rubber modifier.

2. The pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature according to claim 1, characterized in that: The petroleum asphalt is heavy-duty road petroleum asphalt with a label of 70#, a needle penetration of 55-70, and a softening point of 60-80°C.

3. The pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature according to claim 1, characterized in that: The rock asphalt is natural rock asphalt with an ash content of 10%-14%, a needle penetration of less than 10, and a softening point of 80-100°C.

4. The pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature according to claim 1, characterized in that: The polyisobutylene is a low molecular weight polyisobutylene, which is liquid at room temperature and has a molecular weight of 3000-8000; The thickeners are polyurea thickener and bentonite thickener, and the ratio is polyurea thickener: bentonite thickener = 1:

3.

5. The pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature according to claim 1, characterized in that: The filler is 1250 mesh talc or 3000 mesh kaolin, and the oil absorption value is 35-45 ml linseed oil / 100 g.

6. The pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature according to claim 1, characterized in that: The flame retardant is a magnesium hydroxide or aluminum hydroxide type inorganic flame retardant, the antioxidant is one of BASF tinuvin770, BASF tinuvin B75, and BHT264, and the high-temperature modifier is polyethylene wax with a softening point of 115°C, or a mixture of polyethylene wax and polypropylene wax, with a mixing ratio of polyethylene wax:polypropylene wax = 3:

1.

7. The pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature according to claim 1, characterized in that: The SBS rubber is a linear styrene-butadiene-styrene block copolymer with a molecular weight of 80,000-120,000 and a styrene:butadiene block ratio of 30-38:62-70. The SIS rubber is a linear styrene-isoprene-styrene copolymer with a molecular weight of 150,000-300,000 and a styrene:isoprene block ratio of 17-20:80-83. The SBR rubber is a polystyrene butadiene copolymer with a molecular weight of 30,000-100,000.

8. The method for preparing a pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature according to any one of claims 1 to 7, characterized in that: The non-curing rubber asphalt waterproof coating is prepared by the following process: Step 1: preparing a mixed rubber modifier; Step 2: Add the petroleum asphalt, rock asphalt, polyisobutylene, rubber softening oil, and naphthenic oil in parts by mass to a mixing tank, start stirring and heat to 120±15° C., add the mixed rubber modifier in parts by mass to a mixing tank, start stirring and mixing for 5-50 minutes, add the antioxidant, flame retardant, thickener, and tackifying resin in parts by mass, and continue mixing and stirring for 10-60 minutes, add the high-temperature modifier and filler in parts by mass, and stir and shear at high speed for 10-60 minutes to obtain the pressure-sensitive non-curing rubber asphalt waterproof coating that can be applied at room temperature; Step 3: Discharge the material. Keep the material temperature at 100-140℃ during discharge.

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