A non-curing rubber asphalt waterproofing membrane and its preparation method

Abstract

The present invention relates to the technical field of building waterproof materials, and specifically discloses a non-curing rubber asphalt waterproof coil and a preparation method thereof. The non-curing rubber asphalt waterproof coil includes a base fabric layer, non-curing rubber asphalt layers coated on both sides of the base fabric layer, and a release film layer compounded on the surface of the non-curing rubber asphalt layer. The non-curing rubber asphalt layer includes raw materials: matrix asphalt, rubber modifier, liquid tackifying resin, functional additives, sodium bentonite, and plasticizer. The preparation method includes: coating the non-curing rubber asphalt material on both sides of the base fabric layer to obtain the non-curing rubber asphalt layer, and then covering a release film layer on the surface of the non-curing rubber asphalt layer to obtain the required non-curing rubber asphalt waterproof coil. The preparation method of the present invention is simple, and the obtained non-curing rubber asphalt waterproof coil has excellent bonding performance, creep performance, self-healing performance, construction performance and durability, meeting the high-performance requirements of modern buildings for waterproof materials.

Description

Technical Field

[0001] The present invention relates to the technical field of building waterproof materials. More specifically, it relates to a non-curing rubber asphalt waterproof coiled material and a preparation method thereof. Background Art

[0002] Waterproof coiled materials are an important part of the building engineering waterproof system, and their performance directly affects the durability and service life of buildings. SBS modified asphalt waterproof coiled materials use asphalt modified with styrene-butadiene-styrene (SBS) thermoplastic elastomer as the impregnating and coating material, use polyester fiber non-woven fabric, jute cloth, fiberglass felt, etc. as the base fabric respectively, and use plastic film as the anti-sticking isolation layer, and the made coiled materials can be curled into sheet-shaped waterproof coiled materials. SBS modified asphalt waterproof coiled materials have good high-temperature resistance, can be used in the temperature range of -25 to +100 °C, have high elasticity and fatigue resistance, as well as an elongation rate of up to 150% and strong puncture resistance and tear resistance. It is suitable for waterproof projects of industrial and civil buildings in cold regions and with large deformations and vibrations.

[0003] However, due to the large differences in material properties between SBS and asphalt, the mixture of SBS and asphalt is only in a physical blending state, which is prone to segregation at high temperatures and has poor compatibility; moreover, SBS modified asphalt is extremely prone to embrittlement and aging under the action of environmental factors such as heat, oxygen, and light, resulting in unstable performance and reduced durability of SBS modified asphalt waterproof coiled materials. The existing SBS modified asphalt waterproof coiled materials lack self-healing ability after being damaged, which is easy to cause leakage and waterproof failure.

[0004] With the continuous improvement of the performance requirements of building waterproof materials in the construction industry, there is an urgent need in the market for a new type of waterproof coiled material that can overcome the deficiencies of existing SBS modified asphalt waterproof coiled materials. Based on the above statement, the present invention provides a non-curing rubber asphalt waterproof coiled material and a preparation method thereof. Summary of the Invention

[0005] In order to overcome the deficiencies of existing SBS modified asphalt waterproof coiled materials, the present invention provides a non-curing rubber asphalt waterproof coiled material and a preparation method thereof.

[0006] In the first aspect, the present invention provides a non-curing rubber asphalt waterproof coiled material, adopting the following technical solution:

[0007] A non-curing rubber asphalt waterproof coiled material includes a base fabric layer, non-curing rubber asphalt layers coated on both sides of the base fabric layer, and an isolation film layer compounded on the surface of the non-curing rubber asphalt layers;

[0008] The uncured rubber asphalt layer comprises the following raw materials in parts by weight: 50-70 parts of matrix asphalt, 12-18 parts of rubber modifier, 8-12 parts of liquid tackifying resin, 5-10 parts of functional auxiliary agent, 5-10 parts of sodium bentonite, and 1-3 parts of plasticizer.

[0009] Preferably, the uncured rubber asphalt layer comprises the following raw materials in parts by weight: 60 parts of matrix asphalt, 15 parts of rubber modifier, 10 parts of liquid tackifying resin, 8 parts of functional auxiliary agent, 8 parts of sodium bentonite, and 2 parts of plasticizer.

[0010] Preferably, the base course is one of polyester felt, fiberglass felt, and fiberglass-reinforced polyester felt.

[0011] Preferably, the separator film layer is a polyethylene film.

[0012] Preferably, the matrix asphalt is 70# asphalt or 90# asphalt.

[0013] Preferably, the rubber modifier is prepared by the following method:

[0014] (1) Add styrene and butadiene into a reaction kettle, stir and mix them, then add an initiator and heat to 100-140 °C, maintain the reaction for 3-5 h, add a functional monomer, and continue the reaction for 1-2 h to obtain a polymerization product;

[0015] (2) Cool the polymerization product to 60-80 °C, add silica white and an antioxidant, and stir and mix them evenly to obtain the rubber modifier.

[0016] Preferably, in step (1), the mass ratio of styrene to butadiene is 3-5:5-7.

[0017] Preferably, the addition amount of the initiator in step (1) is 0.5-2% of the total mass of styrene and butadiene.

[0018] Preferably, the initiator in step (1) is benzoyl peroxide or azobisisobutyronitrile.

[0019] Preferably, the addition amount of the functional monomer in step (1) is 5-12% of the total mass of styrene and butadiene.

[0020] Preferably, the functional monomer in step (1) comprises methacrylate, 3-(N,N-dimethylamino)ethyl acrylate, and N-succinimidyl-N-methylcarbamate in a mass ratio of 5-7:2-3:1.

[0021] Preferably, in step (2), the mass ratio of the polymerization product, silica white, and antioxidant is 10:1-4:0.5-1.5.

[0022] Preferably, the antioxidant in step (2) is butylated hydroxyanisole and / or 2,6-di-tert-butyl-p-cresol.

[0023] Preferably, the liquid tackifying resin is prepared by the following method:

[0024] Mix castor oil-modified polyol, polyvinyl alcohol, and carboxymethyl cellulose by stirring at a temperature of 60 - 80°C, and add isocyanate and amine catalyst while stirring. Then raise the temperature to 90 - 100°C and keep the reaction for 2 - 4 h. After the reaction is completed, cool to room temperature to obtain the product.

[0025] Preferably, the mass ratio of the castor oil-modified polyol, polyvinyl alcohol, carboxymethyl cellulose, isocyanate, and amine catalyst is 30 - 40:5 - 8:1 - 3:30 - 50:0.1 - 0.3.

[0026] Preferably, the isocyanate includes hexamethylene diisocyanate and tetramethyl-m-xylene diisocyanate with a mass ratio of 1.5 - 2:0.8 - 1.2.

[0027] Preferably, the amine catalyst is at least one of triethylenediamine, N,N-diethylethylamine, and dimethylethanolamine.

[0028] Preferably, the functional aid is cyclopentadimethylsiloxane and / or α-hydro-ω-hydroxy-polydimethylsiloxane.

[0029] Preferably, the functional aid includes cyclopentadimethylsiloxane and α-hydro-ω-hydroxy-polydimethylsiloxane with a mass ratio of 2 - 4:1.

[0030] Preferably, the plasticizer is polyisobutene.

[0031] In a second aspect, the present invention provides a preparation method of a non-curing rubber asphalt waterproof coil, adopting the following technical solution:

[0032] A preparation method of a non-curing rubber asphalt waterproof coil, comprising the following preparation steps:

[0033] S1. Weigh the raw material matrix asphalt, rubber modifier, liquid tackifying resin, functional aid, sodium bentonite, and plasticizer of the non-curing rubber asphalt layer by weight, and set aside;

[0034] S2. Heat the matrix asphalt to 150 - 160°C, keep it warm and stir for 10 - 30 min, add the rubber modifier, liquid tackifying resin, functional aid, sodium bentonite, and plasticizer, stir and mix for 1 - 2 h, and then shear at a speed of 3000 - 5000 r / min for 20 - 40 min to obtain the non-curing rubber asphalt material;

[0035] S3. Coat the two sides of the base layer with the non-curing rubber asphalt material to obtain a non-curing rubber asphalt layer, and then cover the surface of the non-curing rubber asphalt layer with an isolation film layer to obtain the required non-curing rubber asphalt waterproof coil.

[0036] Preferably, the nominal thickness of the non-curing rubber asphalt waterproof coil is 3-5 mm.

[0037] In summary, the present invention has the following beneficial effects:

[0038] The present invention uses matrix asphalt, rubber modifier, liquid tackifying resin, functional additives, sodium bentonite and plasticizer to jointly prepare the non-curing rubber asphalt material. By heating and insulating and stirring the matrix asphalt, it helps to improve its fluidity and promote the uniform mixing with other components. After mixing, high-speed shearing further increases the uniformity of the material; by coating the two sides of the base layer with the non-curing rubber asphalt material to obtain a non-curing rubber asphalt layer, and then covering the surface of the non-curing rubber asphalt layer with an isolation film layer, it can effectively avoid the influence of environmental factors on the waterproof performance and ensure the durability of the waterproof coil. The preparation method of the present invention is simple, and the obtained non-curing rubber asphalt waterproof coil has excellent bonding performance, can adapt to the minor deformation of the base layer, ensure good bonding with the base material, and prevent water penetration; excellent creep performance, can effectively absorb the stress from the base layer; excellent self-healing performance, after suffering minor damage, it can automatically repair and restore the waterproof performance; superior construction performance, can reduce the construction difficulty and improve the construction efficiency; excellent durability performance, can maintain good physical and chemical properties under the action of various environmental factors, extend the service life, and meet the high-performance requirements of modern buildings for waterproof materials.

[0039] The present invention uses petroleum asphalt as the basic material of the waterproof coil to provide waterproof performance and structural strength; during the polymerization of styrene and butadiene, functional monomers are added, and the obtained rubber modifier can significantly improve the elasticity and weather resistance of the waterproof coil, so that the waterproof coil can adapt to temperature changes and mechanical stress; the introduction of functional monomers can significantly enhance the compatibility of SBS and petroleum asphalt and reduce the segregation phenomenon. Using methacrylate, 3-(N,N-dimethylamino)ethyl acrylate and N-succinimidyl-N-methylcarbamate as functional monomers together, the three monomers can introduce cross-linked structures through different chemical reaction mechanisms (such as free radical polymerization), thereby increasing the cross-linking degree of the polymer, and further improving the mechanical strength, thermal stability and anti-aging property of the material; the selection of different monomers can also provide additional chemical reaction sites to further enhance the compatibility of SBS and petroleum asphalt; the introduction of silica and antioxidants can interact with the polymer chains, improve the bonding performance, heat resistance and tensile strength of the material, and extend the service life.

[0040] The liquid tackifying resin of the present invention is prepared by the reaction of castor oil-modified polyol, polyvinyl alcohol, carboxymethyl cellulose, isocyanate and amine catalyst. It can effectively improve the bonding performance with the base layer, ensure the sealing of the waterproof coil, and the liquid tackifying resin has fluidity, which can achieve self-healing at micro damages. The addition of polyvinyl alcohol and carboxymethyl cellulose can significantly improve the adhesiveness of the liquid tackifying resin. The isocyanate selected is hexamethylene diisocyanate and tetramethyl-m-xylene diisocyanate, which effectively promotes the cross-linking reaction and enhances the peel strength and durability of the material.

[0041] By adding the functional additives cyclopentadimethylsiloxane and α-hydro-ω-hydroxy-polydimethylsiloxane, the present invention helps to improve the elasticity of the material, enabling the non-cured rubber asphalt layer to better return to its original state when stressed and temperature changes occur, reducing the occurrence of cracks and damages, enhancing its tear resistance, and making it more resistant to external impacts and stretching during use; the introduction of the functional additives can promote the self-healing mechanism of the material through fluidity and lubrication when micro cracks form, helping to restore the waterproof performance and extend the service life; the silicone functional additives also have good ultraviolet resistance and chemical corrosion resistance, which helps to improve the stability and reliability of the non-cured rubber asphalt layer under various environmental conditions. Specific embodiments

[0042] The following further elaborates on the present invention in conjunction with embodiments.

[0043] The materials, reagents, etc. used in the present invention can be obtained from commercial channels without special instructions.

[0044] Among them, the carcass layer is a long-fiber polyester carcass, purchased from Hebei Jinliu Chemical Fiber Co., Ltd.;

[0045] The release film layer is a polyethylene film: with a thickness of 0.4 mm, purchased from Dezhou Zhengyu Geosynthetic Materials Co., Ltd.;

[0046] The matrix asphalt is No. 70 asphalt, purchased from Foshan Gaofu Zhongshi Petroleum Fuel Asphalt Co., Ltd.;

[0047] Silica: model BTH-1, mesh number 325 mesh, purchased from LingShou County Baixin New Material Technology Co., Ltd.;

[0048] Castor oil-modified polyol: model THCM-523, purchased from Guangzhou Chubu Chemical Co., Ltd.;

[0049] Polyvinyl alcohol: with a content of 99%, purchased from Hubei Shineng Chemical Technology Co., Ltd.;

[0050] Carboxymethyl cellulose: with a content of 99%, purchased from Hubei Shineng Chemical Technology Co., Ltd.;

[0051] Sodium-based bentonite: content 94%, specification 50μm, purchased from Marlin Mineral Products Processing Factory, Lingshou County.

[0052] Preparation Examples 1-3 and Comparative Preparation Examples 1-2 provide the preparation methods of rubber modifiers.

[0053] Preparation Example 1

[0054] The rubber modifier was prepared by the following method:

[0055] (1) Control the mass ratio of styrene to butadiene to be 3:5. Add styrene and butadiene to the reaction kettle, stir and mix at a speed of 400 r / min for 20 min, then add the initiator and heat to 100 °C, maintain the reaction for 5 h, add the functional monomer, and continue the reaction for 1 h to obtain the polymerization product. Among them, the addition amount of the initiator is 0.5% of the total mass of styrene and butadiene, the initiator is benzoyl peroxide, the addition amount of the functional monomer is 5% of the total mass of styrene and butadiene, and the functional monomer includes methacrylate, 3-(N,N-dimethylamino)ethyl acrylate and N-succinimidyl-N-methylcarbamate with a mass ratio of 5:2:1;

[0056] (2) Control the mass ratio of the polymerization product, silica and antioxidant to be 10:1:0.5. Cool the polymerization product to 60 °C, add silica and antioxidant and stir and mix evenly to obtain the rubber modifier. Among them, the antioxidant is butylated hydroxyanisole.

[0057] Preparation Example 2

[0058] The rubber modifier was prepared by the following method:

[0059] (1) Control the mass ratio of styrene to butadiene to be 2:3. Add styrene and butadiene to the reaction kettle, stir and mix at a speed of 500 r / min for 15 min, then add the initiator and heat to 120 °C, maintain the reaction for 4 h, add the functional monomer, and continue the reaction for 1.5 h to obtain the polymerization product. Among them, the addition amount of the initiator is 1.2% of the total mass of styrene and butadiene, the initiator is azobisisobutyronitrile, the addition amount of the functional monomer is 8% of the total mass of styrene and butadiene, and the functional monomer includes methacrylate, 3-(N,N-dimethylamino)ethyl acrylate and N-succinimidyl-N-methylcarbamate with a mass ratio of 6:2.5:1;

[0060] (2) Control the mass ratio of the polymerization product, silica and antioxidant to be 10:2.5:1. Cool the polymerization product to 70 °C, add silica and antioxidant and stir and mix evenly to obtain the rubber modifier. Among them, the antioxidant is 2,6-di-tert-butyl-p-cresol.

[0061] Preparation Example 3

[0062] The rubber modifier is prepared by the following method:

[0063] (1) Control the mass ratio of styrene to butadiene to be 5:7. Add styrene and butadiene into the reaction kettle, stir and mix at a speed of 600 r / min for 10 min, then add the initiator and heat to 140 °C, maintain the reaction for 3 h, add the functional monomer, and continue the reaction for 2 h to obtain the polymerization product. Among them, the addition amount of the initiator is 2% of the total mass of styrene and butadiene, the initiator is benzoyl peroxide, the addition amount of the functional monomer is 12% of the total mass of styrene and butadiene, and the functional monomer includes methacrylate, 3-(N,N-dimethylamino)ethyl acrylate, and N-succinimidyl-N-methylcarbamate with a mass ratio of 7:3:1;

[0064] (2) Control the mass ratio of the polymerization product, silica, and antioxidant to be 10:4:1.5. Cool the polymerization product to 80 °C, add silica and antioxidant, and stir and mix evenly to obtain the rubber modifier. Among them, the antioxidant is butylated hydroxyanisole.

[0065] Comparative Preparation Example 1

[0066] The rubber modifier is prepared by the following method:

[0067] (1) Control the mass ratio of styrene to butadiene to be 3:5. Add styrene and butadiene into the reaction kettle, stir and mix at a speed of 400 r / min for 20 min, then add the initiator and heat to 100 °C, maintain the reaction for 5 h, add the functional monomer, and continue the reaction for 1 h to obtain the polymerization product. Among them, the addition amount of the initiator is 0.5% of the total mass of styrene and butadiene, the initiator is benzoyl peroxide, the addition amount of the functional monomer is 5% of the total mass of styrene and butadiene, and the functional monomer includes methacrylate and 3-(N,N-dimethylamino)ethyl acrylate with a mass ratio of 5:3;

[0068] (2) Control the mass ratio of the polymerization product, silica, and antioxidant to be 10:1:0.5. Cool the polymerization product to 60 °C, add silica and antioxidant, and stir and mix evenly to obtain the rubber modifier. Among them, the antioxidant is butylated hydroxyanisole.

[0069] Comparative Preparation Example 2

[0070] The rubber modifier is prepared by the following method:

[0071] (1) Control the mass ratio of styrene to butadiene to be 3:5. Add styrene and butadiene into the reaction kettle, stir and mix them at a speed of 400 r / min for 20 min, then add the initiator and heat to 100 °C, maintain the reaction for 5 h, add the functional monomer, and continue the reaction for 1 h to obtain the polymerization product. Among them, the addition amount of the initiator is 0.5% of the total mass of styrene and butadiene, the initiator is benzoyl peroxide, the addition amount of the functional monomer is 5% of the total mass of styrene and butadiene, and the functional monomer includes methacrylate and N-succinimidyl-N-methylcarbamate with a mass ratio of 5:3;

[0072] (2) Control the mass ratio of the polymerization product, silica, and antioxidant to be 10:1:0.5. Cool the polymerization product to 60 °C, add silica and antioxidant, and stir and mix them evenly to obtain the rubber modifier. Among them, the antioxidant is butylated hydroxyanisole.

[0073] Preparation Examples 4-6 and Comparative Preparation Examples 3-4 provide the preparation methods of liquid tackifying resins.

[0074] Preparation Example 4

[0075] The liquid tackifying resin is prepared by the following method:

[0076] Mix castor oil-modified polyol with polyvinyl alcohol and carboxymethyl cellulose at a temperature of 60 °C and a speed of 300 r / min for 30 min, then add isocyanate and amine catalyst while stirring, raise the temperature to 90 °C, and keep the reaction for 4 h. After the reaction is completed, cool to room temperature to obtain it; among them, the mass ratio of castor oil-modified polyol, polyvinyl alcohol, carboxymethyl cellulose, isocyanate, and amine catalyst is 30:5:1:30:0.1; the isocyanate includes hexamethylene diisocyanate and tetramethyl-m-xylene diisocyanate with a mass ratio of 1.5:0.8; the amine catalyst is triethylenediamine.

[0077] Preparation Example 5

[0078] The liquid tackifying resin is prepared by the following method:

[0079] Mix castor oil-modified polyol with polyvinyl alcohol and carboxymethyl cellulose at a temperature of 70 °C and a speed of 400 r / min for 20 min, then add isocyanate and amine catalyst while stirring, raise the temperature to 95 °C, and keep the reaction for 3 h. After the reaction is completed, cool to room temperature to obtain it; among them, the mass ratio of castor oil-modified polyol, polyvinyl alcohol, carboxymethyl cellulose, isocyanate, and amine catalyst is 35:6.5:2:40:0.2; the isocyanate includes hexamethylene diisocyanate and tetramethyl-m-xylene diisocyanate with a mass ratio of 1.8:1; the amine catalyst is N,N-diethylethylamine.

[0080] Preparation Example 6

[0081] The liquid tackifying resin was prepared by the following method:

[0082] The castor oil-modified polyol, polyvinyl alcohol, and carboxymethyl cellulose were stirred and mixed at 80 °C at a speed of 500 r / min for 10 min, and then isocyanate and amine catalyst were added while stirring. The temperature was raised to 100 °C and the reaction was carried out for 2 h under insulation. After the reaction was completed, it was cooled to room temperature to obtain; among them, the mass ratio of the castor oil-modified polyol, polyvinyl alcohol, carboxymethyl cellulose, isocyanate, and amine catalyst was 40:8:3:50:0.3; the isocyanate included hexamethylene diisocyanate and tetramethyl-m-xylene diisocyanate with a mass ratio of 2:1.2; the amine catalyst was dimethylethanolamine.

[0083] Comparative Preparation Example 3

[0084] The liquid tackifying resin was prepared by the following method:

[0085] The castor oil-modified polyol was stirred at a speed of 300 r / min for 30 min, and then isocyanate and amine catalyst were added while stirring. The temperature was raised to 90 °C and the reaction was carried out for 4 h under insulation. After the reaction was completed, it was cooled to room temperature to obtain; among them, the mass ratio of the castor oil-modified polyol, isocyanate, and amine catalyst was 36:30:0.1; the isocyanate included hexamethylene diisocyanate and tetramethyl-m-xylene diisocyanate with a mass ratio of 1.5:0.8; the amine catalyst was triethylenediamine.

[0086] Comparative Preparation Example 4

[0087] The liquid tackifying resin was prepared by the following method:

[0088] The castor oil-modified polyol, polyvinyl alcohol, and carboxymethyl cellulose were stirred and mixed at 60 °C at a speed of 300 r / min for 30 min, and then isocyanate and amine catalyst were added while stirring. The temperature was raised to 90 °C and the reaction was carried out for 4 h under insulation. After the reaction was completed, it was cooled to room temperature to obtain; among them, the mass ratio of the castor oil-modified polyol, polyvinyl alcohol, carboxymethyl cellulose, isocyanate, and amine catalyst was 30:5:1:30:0.1; the isocyanate was hexamethylene diisocyanate; the amine catalyst was triethylenediamine.

[0089] Examples 1-3 provide a non-curing rubber asphalt waterproofing membrane and a preparation method thereof.

[0090] Example 1

[0091] A non-curing rubber asphalt waterproofing membrane, including a carcass layer, a non-curing rubber asphalt layer coated on both sides of the carcass layer, and a release film layer laminated on the surface of the non-curing rubber asphalt layer;

[0092] Among them, the uncured rubber asphalt layer includes the following raw materials in parts by weight: 50 parts of matrix asphalt, 12 parts of rubber modifier, 8 parts of liquid tackifying resin, 5 parts of functional additives, 5 parts of sodium bentonite, and 1 part of plasticizer; the rubber modifier is prepared according to Preparation Example 1; the liquid tackifying resin is prepared according to Preparation Example 4; the functional additives include cyclopentasiloxane and α-hydro-ω-hydroxy-polydimethylsiloxane with a mass ratio of 2:1; the plasticizer is polyisobutylene.

[0093] A preparation method of an uncured rubber asphalt waterproof coil includes the following steps:

[0094] S1. Weigh the raw materials of the uncured rubber asphalt layer, namely matrix asphalt, rubber modifier, liquid tackifying resin, functional additives, sodium bentonite, and plasticizer, in parts by weight, and set aside.

[0095] S2. Heat the matrix asphalt to 150 °C, carry out heat preservation stirring treatment at a speed of 300 r / min for 30 min, add the rubber modifier, liquid tackifying resin, functional additives, sodium bentonite, and plasticizer, continue stirring and mixing for 2 h, and then shear at a speed of 3000 r / min for 40 min to obtain the uncured rubber asphalt material.

[0096] S3. Dip-coat the two sides of the base layer with the uncured rubber asphalt material to obtain the uncured rubber asphalt layer, control the coating thickness to be 0.15 mm, carry out shaping after natural cooling, and then cover the surface of the uncured rubber asphalt layer with an isolation film layer to obtain the required uncured rubber asphalt waterproof coil.

[0097] Example 2

[0098] An uncured rubber asphalt waterproof coil includes a base layer, an uncured rubber asphalt layer coated on both sides of the base layer, and an isolation film layer compounded on the surface of the uncured rubber asphalt layer;

[0099] Among them, the uncured rubber asphalt layer includes the following raw materials in parts by weight: 60 parts of matrix asphalt, 15 parts of rubber modifier, 10 parts of liquid tackifying resin, 8 parts of functional additives, 8 parts of sodium bentonite, and 2 parts of plasticizer; the rubber modifier is prepared according to Preparation Example 2; the liquid tackifying resin is prepared according to Preparation Example 5; the functional additives include cyclopentasiloxane and α-hydro-ω-hydroxy-polydimethylsiloxane with a mass ratio of 3:1; the plasticizer is polyisobutylene.

[0100] A preparation method of an uncured rubber asphalt waterproof coil includes the following steps:

[0101] S1. Weigh the raw materials of the uncured rubber asphalt layer, namely matrix asphalt, rubber modifier, liquid tackifying resin, functional additives, sodium bentonite, and plasticizer, in parts by weight, and set aside.

[0102] S2. Heat the matrix asphalt to 155 °C, keep stirring at a speed of 400 r / min for 20 min, add the rubber modifier, liquid tackifying resin, functional additive, sodium bentonite, and plasticizer, continue stirring and mixing for 1.5 h, and then shear at a speed of 4000 r / min for 30 min to obtain the uncured rubber asphalt material;

[0103] S3. Dip-coat the uncured rubber asphalt material on both sides of the base course to obtain an uncured rubber asphalt layer, control the coating thickness to be 0.25 mm, shape it after natural cooling, and then cover the surface of the uncured rubber asphalt layer with a release film layer to obtain the required uncured rubber asphalt waterproofing membrane.

[0104] Example 3

[0105] An uncured rubber asphalt waterproofing membrane, comprising a base course, an uncured rubber asphalt layer coated on both sides of the base course, and a release film layer laminated on the surface of the uncured rubber asphalt layer;

[0106] Among them, the uncured rubber asphalt layer comprises the following raw materials in parts by weight: 70 parts of matrix asphalt, 18 parts of rubber modifier, 12 parts of liquid tackifying resin, 10 parts of functional additive, 10 parts of sodium bentonite, and 3 parts of plasticizer; the rubber modifier is prepared from Preparation Example 3; the liquid tackifying resin is prepared from Preparation Example 6; the functional additive comprises cyclopentadimethylsiloxane and α-hydro-ω-hydroxy-polydimethylsiloxane in a mass ratio of 4:1; the plasticizer is polyisobutene.

[0107] A preparation method of an uncured rubber asphalt waterproofing membrane, comprising the following steps:

[0108] S1. Weigh the raw materials of the uncured rubber asphalt layer, namely matrix asphalt, rubber modifier, liquid tackifying resin, functional additive, sodium bentonite, and plasticizer, according to the parts by weight, and set aside;

[0109] S2. Heat the matrix asphalt to 160 °C, keep stirring at a speed of 500 r / min for 10 min, add the rubber modifier, liquid tackifying resin, functional additive, sodium bentonite, and plasticizer, continue stirring and mixing for 1 h, and then shear at a speed of 5000 r / min for 20 min to obtain the uncured rubber asphalt material;

[0110] S3. Dip-coat the uncured rubber asphalt material on both sides of the base course to obtain an uncured rubber asphalt layer, control the coating thickness to be 0.35 mm, shape it after natural cooling, and then cover the surface of the uncured rubber asphalt layer with a release film layer to obtain the required uncured rubber asphalt waterproofing membrane.

[0111] To verify the comprehensive performance of the uncured rubber asphalt waterproofing membranes prepared in Examples 1-3 of the present invention, the applicant set Comparative Examples 1-6, which are specifically as follows:

[0112] Comparative Example 1

[0113] A non-curing rubber asphalt waterproof coil, comprising a carcass layer, non-curing rubber asphalt layers coated on both sides of the carcass layer, and a release film layer laminated on the surface of the non-curing rubber asphalt layer;

[0114] Among them, the non-curing rubber asphalt layer comprises the following raw materials in parts by weight: 50 parts of matrix asphalt, 12 parts of rubber modifier, 8 parts of liquid tackifying resin, 5 parts of functional additive, 5 parts of sodium bentonite, 1 part of plasticizer; the rubber modifier is prepared from Comparative Preparation Example 1; the liquid tackifying resin is prepared from Preparation Example 4; the functional additive comprises cyclopentasiloxane and α-hydro-ω-hydroxy-polydimethylsiloxane with a mass ratio of 2:1; the plasticizer is polyisobutylene.

[0115] A preparation method of a non-curing rubber asphalt waterproof coil, comprising the following steps:

[0116] S1. Weigh the raw materials of the non-curing rubber asphalt layer, namely matrix asphalt, rubber modifier, liquid tackifying resin, functional additive, sodium bentonite, and plasticizer in parts by weight, and set aside;

[0117] S2. Heat the matrix asphalt to 150 °C, carry out heat preservation stirring treatment at a speed of 300 r / min for 30 min, add the rubber modifier, liquid tackifying resin, functional additive, sodium bentonite, and plasticizer, continue to stir and mix for 2 h, and then shear at a speed of 3000 r / min for 40 min to obtain non-curing rubber asphalt material;

[0118] S3. Dip-coat the non-curing rubber asphalt material on both sides of the carcass layer to obtain non-curing rubber asphalt layers, control the coating thickness to be 0.15 mm, shape after natural cooling, and then cover a release film layer on the surface of the non-curing rubber asphalt layer to obtain the required non-curing rubber asphalt waterproof coil.

[0119] Comparative Example 2

[0120] A non-curing rubber asphalt waterproof coil, comprising a carcass layer, non-curing rubber asphalt layers coated on both sides of the carcass layer, and a release film layer laminated on the surface of the non-curing rubber asphalt layer;

[0121] Among them, the non-curing rubber asphalt layer comprises the following raw materials in parts by weight: 50 parts of matrix asphalt, 12 parts of rubber modifier, 8 parts of liquid tackifying resin, 5 parts of functional additive, 5 parts of sodium bentonite, 1 part of plasticizer; the rubber modifier is prepared from Comparative Preparation Example 2; the liquid tackifying resin is prepared from Preparation Example 4; the functional additive comprises cyclopentasiloxane and α-hydro-ω-hydroxy-polydimethylsiloxane with a mass ratio of 2:1; the plasticizer is polyisobutylene.

[0122] A preparation method of a non-curing rubber asphalt waterproof coiled material, comprising the following steps:

[0123] S1. Weigh matrix asphalt, rubber modifier, liquid tackifying resin, functional additive, sodium bentonite, and plasticizer as raw materials for the non-curing rubber asphalt layer by weight parts, and set aside.

[0124] S2. Heat the matrix asphalt to 150 °C, carry out heat preservation stirring treatment at a rotation speed of 300 r / min for 30 min, add the rubber modifier, liquid tackifying resin, functional additive, sodium bentonite, and plasticizer, continue stirring and mixing for 2 h, and then shear at a rotation speed of 3000 r / min for 40 min to obtain non-curing rubber asphalt material.

[0125] S3. Dip-coat the non-curing rubber asphalt material on both sides of the base layer to obtain a non-curing rubber asphalt layer, control the coating thickness to be 0.15 mm, carry out shaping after natural cooling, and then cover an isolation film layer on the surface of the non-curing rubber asphalt layer to obtain the required non-curing rubber asphalt waterproof coiled material.

[0126] Comparative Example 3

[0127] A non-curing rubber asphalt waterproof coiled material, comprising a base layer, non-curing rubber asphalt layers coated on both sides of the base layer, and an isolation film layer compounded on the surface of the non-curing rubber asphalt layer;

[0128] Among them, the non-curing rubber asphalt layer comprises the following raw materials by weight parts: 50 parts of matrix asphalt, 12 parts of rubber modifier, 8 parts of liquid tackifying resin, 5 parts of functional additive, 5 parts of sodium bentonite, and 1 part of plasticizer; the rubber modifier is prepared from Preparation Example 1; the liquid tackifying resin is prepared from Comparative Preparation Example 3; the functional additive comprises cyclopentasiloxane and α-hydro-ω-hydroxy-polydimethylsiloxane with a mass ratio of 2:1; the plasticizer is polyisobutene.

[0129] A preparation method of a non-curing rubber asphalt waterproof coiled material, comprising the following steps:

[0130] S1. Weigh matrix asphalt, rubber modifier, liquid tackifying resin, functional additive, sodium bentonite, and plasticizer as raw materials for the non-curing rubber asphalt layer by weight parts, and set aside.

[0131] S2. Heat the matrix asphalt to 150 °C, carry out heat preservation stirring treatment at a rotation speed of 300 r / min for 30 min, add the rubber modifier, liquid tackifying resin, functional additive, sodium bentonite, and plasticizer, continue stirring and mixing for 2 h, and then shear at a rotation speed of 3000 r / min for 40 min to obtain non-curing rubber asphalt material.

[0132] S3. Dip the non-curing rubber asphalt material on both sides of the base layer to obtain a non-curing rubber asphalt layer, control the coating thickness to be 0.15 mm, let it set after natural cooling, and then cover a release film layer on the surface of the non-curing rubber asphalt layer to obtain the required non-curing rubber asphalt waterproof coil.

[0133] Comparative Example 4

[0134] A non-curing rubber asphalt waterproof coil, comprising a base layer, non-curing rubber asphalt layers coated on both sides of the base layer, and a release film layer compounded on the surface of the non-curing rubber asphalt layer;

[0135] Among them, the non-curing rubber asphalt layer comprises the following raw materials in parts by weight: 50 parts of matrix asphalt, 12 parts of rubber modifier, 8 parts of liquid tackifying resin, 5 parts of functional additive, 5 parts of sodium bentonite, 1 part of plasticizer; the rubber modifier is prepared from Preparation Example 1; the liquid tackifying resin is prepared from Comparative Preparation Example 4; the functional additive includes cyclopentadimethylsiloxane and α-hydro-ω-hydroxy-polydimethylsiloxane with a mass ratio of 2:1; the plasticizer is polyisobutene.

[0136] A preparation method of a non-curing rubber asphalt waterproof coil, comprising the following steps:

[0137] S1. Weigh the raw materials of the non-curing rubber asphalt layer, namely matrix asphalt, rubber modifier, liquid tackifying resin, functional additive, sodium bentonite, and plasticizer in parts by weight for standby;

[0138] S2. Heat the matrix asphalt to 150 °C, perform heat preservation stirring treatment at a rotation speed of 300 r / min for 30 min, add the rubber modifier, liquid tackifying resin, functional additive, sodium bentonite, and plasticizer, continue stirring and mixing for 2 h, and then shear at a rotation speed of 3000 r / min for 40 min to obtain a non-curing rubber asphalt material;

[0139] S3. Dip the non-curing rubber asphalt material on both sides of the base layer to obtain a non-curing rubber asphalt layer, control the coating thickness to be 0.15 mm, let it set after natural cooling, and then cover a release film layer on the surface of the non-curing rubber asphalt layer to obtain the required non-curing rubber asphalt waterproof coil.

[0140] Comparative Example 5

[0141] A non-curing rubber asphalt waterproof coil, comprising a base layer, non-curing rubber asphalt layers coated on both sides of the base layer, and a release film layer compounded on the surface of the non-curing rubber asphalt layer;

[0142] Among them, the non-curing rubber asphalt layer comprises raw materials in the following parts by weight: 50 parts of matrix asphalt, 12 parts of rubber modifier, 8 parts of liquid tackifying resin, 5 parts of functional additive, 5 parts of sodium bentonite, and 1 part of plasticizer; the rubber modifier is prepared from Preparation Example 1; the liquid tackifying resin is prepared from Preparation Example 4; the functional additive is cyclopentasiloxane; the plasticizer is polyisobutylene.

[0143] A preparation method of a non-curing rubber asphalt waterproof coil comprises the following steps:

[0144] S1. Weigh the raw materials of the non-curing rubber asphalt layer, namely matrix asphalt, rubber modifier, liquid tackifying resin, functional additive, sodium bentonite, and plasticizer, by parts by weight, and set aside.

[0145] S2. Heat the matrix asphalt to 150 °C, perform heat preservation stirring treatment at a rotation speed of 300 r / min for 30 min, add the rubber modifier, liquid tackifying resin, functional additive, sodium bentonite, and plasticizer, continue stirring and mixing for 2 h, and then shear at a rotation speed of 3000 r / min for 40 min to obtain non-curing rubber asphalt material.

[0146] S3. Dip-coat the non-curing rubber asphalt material on both sides of the base layer to obtain a non-curing rubber asphalt layer, control the coating thickness to be 0.15 mm, perform shaping after natural cooling, and then cover an isolation film layer on the surface of the non-curing rubber asphalt layer to obtain the required non-curing rubber asphalt waterproof coil.

[0147] Comparative Example 6

[0148] A non-curing rubber asphalt waterproof coil comprises a base layer, a non-curing rubber asphalt layer coated on both sides of the base layer, and an isolation film layer compounded on the surface of the non-curing rubber asphalt layer;

[0149] Among them, the non-curing rubber asphalt layer comprises raw materials in the following parts by weight: 50 parts of matrix asphalt, 12 parts of rubber modifier, 8 parts of liquid tackifying resin, 5 parts of functional additive, 5 parts of sodium bentonite, and 1 part of plasticizer; the rubber modifier is prepared from Preparation Example 1; the liquid tackifying resin is prepared from Preparation Example 4; the functional additive is α-hydro-ω-hydroxy-polydimethylsiloxane; the plasticizer is polyisobutylene.

[0150] A preparation method of a non-curing rubber asphalt waterproof coil comprises the following steps:

[0151] S1. Weigh the raw materials of the non-curing rubber asphalt layer, namely matrix asphalt, rubber modifier, liquid tackifying resin, functional additive, sodium bentonite, and plasticizer, by parts by weight, and set aside.

[0152] S2. Heat the matrix asphalt to 150°C, keep it warm and stir at a speed of 300 r / min for 30 min. Add rubber modifier, liquid tackifying resin, functional additives, sodium bentonite, and plasticizer, continue to stir and mix for 2 h, and then shear at a speed of 3000 r / min for 40 min to obtain non-cured rubber asphalt material;

[0153] S3. Dip-coat the two sides of the base course with the non-cured rubber asphalt material to obtain a non-cured rubber asphalt layer, control the coating thickness to be 0.15 mm, shape it after natural cooling, and then cover an isolation film layer on the surface of the non-cured rubber asphalt layer to obtain the required non-cured rubber asphalt waterproof coiled material.

[0154] Performance Testing

[0155] Test the comprehensive performance of the non-cured rubber asphalt waterproof coiled materials prepared in Examples 1-3 and Comparative Examples 1-6 of the present invention respectively, as follows:

[0156] Tensile property: Refer to the method in the national standard GB / T 328.8-2007 "Test Methods for Building Waterproofing Membranes - Part 8: Tensile Properties of Bituminous Waterproofing Membranes" to test the tensile property, and measure the maximum longitudinal tensile force (N / 50 mm);

[0157] Low-temperature flexibility: Refer to the method in the national standard GB / T 328.14-2007 "Test Methods for Building Waterproofing Membranes - Part 14: Low-temperature Flexibility of Bituminous Waterproofing Membranes" to test the low-temperature flexibility, and measure the low-temperature flexibility (°C);

[0158] Heat aging property: Test the maximum longitudinal tensile force (N / 50 mm) and low-temperature flexibility (°C) after heat aging treatment at 80°C for 168 h;

[0159] Cement peel strength: Refer to the method in the national standard GB / T 35467-2017 "Wet-laid Waterproofing Membranes" to test the cement peel strength, and measure the cement peel strength (N / mm);

[0160] Seam peel strength: Refer to the method in the national standard GB / T 328.20-2007 "Test Methods for Building Waterproofing Membranes - Part 20: Seam Peel Performance of Bituminous Waterproofing Membranes" to test the seam peel strength, and measure the seam peel strength (N / mm);

[0161] Water impermeability: Refer to the method in the national standard GB / T 328.10-2007 "Test Methods for Building Waterproofing Membranes - Part 10: Water Impermeability of Bituminous and Polymer Waterproofing Membranes" to test the water impermeability;

[0162] The measurement results are shown in Table 1.

[0163] Table 1:

[0164]

[0165] As can be seen from the data shown in Table 1 above, the comprehensive performance of the non-curing rubber asphalt waterproof coiled material prepared in Examples 1-3 is significantly better than that of Comparative Examples 1-6, and it has obvious advantages in terms of tensile performance, heat resistance, peel strength, low temperature flexibility and water impermeability, etc., and has broad market prospects.

[0166] This specific embodiment is only an interpretation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications that do not contribute creatively to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A non-curing rubber asphalt waterproofing membrane, characterized in that, It includes a base course, a non-curing rubber asphalt layer coated on both sides of the base course, and an isolation film layer compounded on the surface of the non-curing rubber asphalt layer; The non-curing rubber asphalt layer includes the following raw materials in parts by weight: 50-70 parts of matrix asphalt, 12-18 parts of rubber modifier, 8-12 parts of liquid tackifying resin, 5-10 parts of functional auxiliary agent, 5-10 parts of sodium bentonite, and 1-3 parts of plasticizer; The liquid tackifying resin is prepared by the following method: Stir and mix castor oil-modified polyol, polyvinyl alcohol, and carboxymethyl cellulose at a temperature of 60-80 °C, add isocyanate and amine catalyst while stirring, raise the temperature to 90-100 °C, keep the temperature for reaction for 2-4 h, and after the reaction is completed, cool to room temperature to obtain it; The functional auxiliary agent includes cyclopentadimethylsiloxane and α-hydro-ω-hydroxy-polydimethylsiloxane with a mass ratio of 2-4:

1.

2. The uncured rubber asphalt waterproof coiled material according to claim 1, characterized in that, The rubber modifier is prepared by the following method: (1) Add styrene and butadiene to a reaction kettle, stir and mix, add an initiator and heat to 100-140 °C, maintain the reaction for 3-5 h, add a functional monomer, and continue the reaction for 1-2 h to obtain a polymerization product; (2) Cool the polymerization product to 60-80 °C, add white carbon black and antioxidant and stir and mix evenly to obtain a rubber modifier.

3. The uncured rubber asphalt waterproof coiled material according to claim 2, wherein In the step (1), the mass ratio of styrene to butadiene is 3-5:5-7; the addition amount of the initiator is 0.5-2% of the total mass of styrene and butadiene; the addition amount of the functional monomer is 5-12% of the total mass of styrene and butadiene; In the step (2), the mass ratio of the polymerization product, white carbon black, and antioxidant is 10:1-4:0.5-1.

5.

4. The uncured rubber asphalt waterproof coiled material according to claim 2, wherein In the step (1), the functional monomer includes methacrylate, 3-(N,N-dimethylamino)ethyl acrylate, and N-succinimidyl-N-methylcarbamate with a mass ratio of 5-7:2-3:

1.

5. The uncured rubber asphalt waterproofing coil according to claim 1, characterized in that, The mass ratio of the castor oil-modified polyol, polyvinyl alcohol, carboxymethyl cellulose, isocyanate, and amine catalyst is 30-40:5-8:1-3:30-50:0.1-0.

3.

6. The uncured rubber asphalt waterproof coiled material according to claim 1, characterized in that, The isocyanate includes hexamethylene diisocyanate and tetramethyl-m-xylene diisocyanate with a mass ratio of 1.5-2:0.8-1.

2.

7. A method for preparing the non-curing rubber asphalt waterproof coiled material according to any one of claims 1-6, characterized in that, It includes the following steps: S1. Weigh the raw materials of the non-curing rubber asphalt layer, namely matrix asphalt, rubber modifier, liquid tackifying resin, functional auxiliary agent, sodium bentonite, and plasticizer in parts by weight for standby; S2. Heat the matrix asphalt to 150-160 °C, keep the temperature and stir for 10-30 min, add the rubber modifier, liquid tackifying resin, functional auxiliary agent, sodium bentonite, and plasticizer, stir and mix for 1-2 h, and then shear at a speed of 3000-5000 r / min for 20-40 min to obtain a non-curing rubber asphalt material; S3. Coat the non-curing rubber asphalt material on both sides of the base course to obtain a non-curing rubber asphalt layer, and then cover an isolation film layer on the surface of the non-curing rubber asphalt layer to obtain the required non-curing rubber asphalt waterproof coiled material.

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