Aging-resistant modified bitumen waterproof compound, waterproof coiled material and preparation method thereof

Abstract

The application discloses an anti-aging modified asphalt waterproof compound, a waterproof coiled material and a preparation method thereof. The anti-aging modified asphalt waterproof compound comprises, in percentage by mass, 35-40% of asphalt, 3-6% of naphthenic oil, 5-10% of a rubber modifier, 0.1-0.2% of a vulcanizing agent, 5-10% of a viscosity reducer, 8-15% of petroleum resin, 1-2% of wax powder, 8-12% of rubber powder, and 20-40% of a filler. The rubber modifier comprises a hydrogenated styrene-butadiene block copolymer, and the vulcanizing agent comprises a benzoquinone dioxime. According to the embodiment of the application, the viscosity of the compound can be reduced while the anti-aging performance of the asphalt waterproof compound is ensured, and the production efficiency is improved.

Description

Technical Field

[0001] This application belongs to the field of building waterproofing materials, and in particular relates to an aging-resistant modified bitumen waterproofing adhesive, a waterproof membrane, and a method for preparing the same. Background Technology

[0002] Waterproof membranes are among the most cost-effective and convenient waterproofing materials currently available. Modified bitumen waterproof membranes are the most common type on the market. Modified bitumen waterproof membranes are made by modifying asphalt mixtures with a series of additives, including bitumen modifiers (SBS, APP, etc.), mineral powder admixtures (lime, graphite), fiber admixtures (glass fiber, etc.), and antioxidants (zinc sulfide, etc.). This modification treatment improves various performance indicators of the asphalt mixture, especially its aging resistance, preventing performance degradation caused by irreversible physicochemical changes such as thermo-oxidative aging and UV aging during production and transportation.

[0003] Currently, in order to improve and stabilize the aging resistance of asphalt waterproof membranes, it is necessary to increase the amount of the aforementioned additives. However, increasing the amount of additives will, on the one hand, increase the cost of the asphalt waterproof membrane; on the other hand, it will increase the viscosity of the asphalt mixture, making production more difficult, reducing production speed, and consequently decreasing efficiency. Summary of the Invention

[0004] This application provides an aging-resistant modified bitumen waterproofing compound, a waterproof membrane, and a method for preparing the same, which can reduce the viscosity of the compound and improve production efficiency while ensuring the aging resistance of the bitumen waterproofing compound.

[0005] In a first aspect, embodiments of this application provide an aging-resistant modified asphalt waterproofing compound, which, by weight percentage, comprises: 35%-40% asphalt; 3%-6% naphthenic oil; 5%-10% rubber modifier; 0.1%-0.2% vulcanizing agent; 5%-10% viscosity reducer; 8%-15% petroleum resin; 1%-2% wax powder; 8%-12% rubber powder; and 20%-40% filler. The rubber modifier includes hydrogenated styrene-butadiene block copolymer; and the vulcanizing agent includes benzoquinone dioxime.

[0006] In any embodiment of this application, the rubber modifier further includes at least one of butadiene-styrene-butadiene triblock copolymer, styrene-butadiene rubber, and butadiene-isoprene-butadiene triblock copolymer.

[0007] In any embodiment of this application, benzoquinone dioxime includes p-benzoquinone dioxime.

[0008] In any embodiment of this application, the viscosity reducer includes at least one of polycarbonate, polypropylene wax, and polybutylene adipate.

[0009] In any embodiment of this application, the asphalt includes at least one of 90# asphalt, 70# asphalt, and 200# asphalt.

[0010] In any embodiment of this application, the petroleum resin includes at least one of C9 petroleum resin, coumarone resin, terpene resin, and acrylonitrile-butadiene-styrene copolymer.

[0011] In any embodiment of this application, the wax powder includes at least one of polyethylene wax, polypropylene wax, and polytetrafluoroethylene wax.

[0012] In any embodiment of this application, the rubber powder includes waste tire rubber powder.

[0013] In any embodiment of this application, the filler includes at least one of 200-mesh talc powder, 300-mesh talc powder, and 500-mesh talc powder.

[0014] In any embodiment of this application, the viscosity of the modified bitumen waterproofing adhesive is 10,000-20,000 MPa·s at 170°C.

[0015] Secondly, embodiments of this application provide a method for preparing modified asphalt waterproofing compound, comprising the following steps: mixing materials containing asphalt and naphthenic oil at a preset temperature to obtain mixture I; adding a rubber modifier and petroleum resin to mixture I, and maintaining the temperature to obtain mixture II; adding a viscosity reducer, a vulcanizing agent, and rubber powder to mixture II, and maintaining the temperature to obtain mixture III; adding wax powder to mixture III, and maintaining the temperature to obtain mixture IV; adding a filler to mixture IV, and maintaining the temperature to obtain modified asphalt waterproofing compound.

[0016] In any embodiment of this application, in the step of mixing materials containing asphalt and naphthenic oil at a preset temperature, the preset temperature is 130-150°C, and the mixing is carried out by stirring at a speed of 700-900 rad / min.

[0017] In any embodiment of this application, in the step of adding the rubber modifier and petroleum resin to the above mixture I, the temperature of heat preservation is 170-190°C, the heat preservation time is 0.8-1.2h, and the heat preservation is carried out by stirring at 900-1200 rad / min.

[0018] In any embodiment of this application, in the step of adding the viscosity reducer, vulcanizing agent and rubber powder to the above mixture II, the temperature of heat preservation is 170-190°C, the heat preservation time is 1.8-2.2h, and the heat preservation is carried out by stirring at 900-1200 rad / min.

[0019] In any embodiment of this application, in the step of adding wax powder to the above mixture III, the temperature of heat preservation is 170-190°C, the heat preservation time is 15-30 min, and the heat preservation is carried out by stirring at 900-1200 rad / min.

[0020] In any embodiment of this application, in the step of adding the filler to the above mixture IV, the temperature of the heat preservation is 170-190°C, the heat preservation time is 0.8-1.2h, and the heat preservation is carried out by stirring at 900-1200 rad / min.

[0021] Thirdly, this application provides an aging-resistant modified bitumen waterproof membrane, which is made using the modified bitumen waterproof adhesive or the modified bitumen waterproof adhesive obtained by the above preparation method, and includes the following steps: the modified bitumen waterproof adhesive and the face film are extruded and molded by rollers, and after cooling, the membrane is covered with a release film, shaped and rolled to obtain the aging-resistant modified bitumen waterproof membrane.

[0022] The aging-resistant modified bitumen waterproofing compound, waterproofing membrane, and preparation method of the present application embodiments use specific rubber modifiers and vulcanizing agents to modify the bitumen waterproofing compound. While ensuring the aging resistance of the bitumen waterproofing compound, the addition amount of vulcanizing agent can be reduced due to the compounding effect of specific rubber modifiers and vulcanizing agents, thereby reducing the overall viscosity of the compound and improving production efficiency. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0025] The following describes embodiments of the aging-resistant modified bitumen waterproofing compound, waterproof membrane, and preparation method thereof. However, unnecessary detailed descriptions may be omitted. For example, detailed descriptions of well-known matters and repetitive descriptions of practically identical structures may be omitted. This is to avoid unnecessarily lengthy descriptions and to facilitate understanding by those skilled in the art. Furthermore, the following description is provided to enable those skilled in the art to fully understand this application and is not intended to limit the subject matter of the claims.

[0026] The "range" disclosed in this application is defined by a lower limit and an upper limit. A given range is defined by selecting a lower limit and an upper limit, which define the boundaries of a particular range. Ranges defined in this way can include or exclude endpoints and can be arbitrarily combined; that is, any lower limit can be combined with any upper limit to form a range. For example, if ranges of 60-120 and 80-110 are listed for a specific parameter, it is expected that ranges of 60-110 and 80-120 are also included. Furthermore, if minimum range values ​​of 1 and 2 are listed, and if maximum range values ​​of 3, 4, and 5 are listed, then the following ranges are all expected: 1-3, 1-4, 1-5, 2-3, 2-4, and 2-5. In this application, unless otherwise stated, the numerical range "ab" represents a shortened representation of any combination of real numbers between a and b, where a and b are real numbers. For example, the numerical range "0-5" indicates that all real numbers between "0-5" have been listed in this article; "0-5" is simply a shortened representation of these numerical combinations. Furthermore, when a parameter is stated as an integer ≥2, it is equivalent to disclosing that the parameter is, for example, an integer such as 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc.

[0027] Unless otherwise specified, all embodiments and optional embodiments of this application may be combined with each other to form new technical solutions, and such technical solutions should be considered to be included in the disclosure of this application.

[0028] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions, and such technical solutions shall be deemed to be included in the disclosure of this application.

[0029] Unless otherwise specified, all steps in this application may be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order. For example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.

[0030] Unless otherwise specified, all raw materials used in the embodiments of this application were purchased through commercial channels.

[0031] Unless otherwise specified, this application uses conventional testing methods or testing methods recommended by the instrument.

[0032] In existing technologies, to improve and stabilize the aging resistance of asphalt waterproof membranes, it is necessary to increase the amount of various additives. Among these, vulcanizing agents are commonly added to asphalt waterproof membranes, but most vulcanizing agents have a certain degree of toxicity. On the one hand, the addition of vulcanizing agents can transform the linear molecular structure of rubber into a three-dimensional network or cross-linked network structure through the "bridging" effect of the vulcanizing agent, thereby significantly improving the mechanical and physical properties of the rubber. On the other hand, the formation of cross-linked network structures increases the viscosity of the asphalt waterproof granule system. Increased viscosity in the asphalt waterproof granule system leads to lower production speeds in the workshop, thus reducing production efficiency.

[0033] Therefore, on the one hand, this application modifies asphalt waterproofing compound by selecting rubber modifiers, viscosity reducers, and vulcanizing agents with inherent aging resistance properties and mixing them in a compound. This modification effect is far greater than that achieved by using a single rubber modifier or a vulcanizing agent alone. On the other hand, this application reduces the amount of vulcanizing agent added through the compounding of the selected rubber modifiers, viscosity reducers, and vulcanizing agents. This reduces the overall viscosity of the asphalt waterproofing compound while ensuring its aging resistance, thus improving production efficiency. The reduced amount of vulcanizing agent also makes the asphalt waterproofing membrane more environmentally friendly.

[0034] Aging-resistant modified bitumen waterproofing adhesive

[0035] An aging-resistant modified bitumen waterproofing compound, comprising, by weight percentage: 35%-40% bitumen; 3%-6% naphthenic oil; 5%-10% rubber modifier; 0.1%-0.2% vulcanizing agent; 5%-10% viscosity reducer; 8%-15% petroleum resin; 1%-2% wax powder; 8%-12% rubber powder; and 20%-40% filler. The rubber modifier includes hydrogenated styrene-butadiene block copolymer; and the vulcanizing agent includes benzoquinone dioxime.

[0036] Optionally, the rubber modifier can be 5%-8% by mass.

[0037] Optionally, the viscosity reducer can be 5%-8% by mass.

[0038] Naphthenic oils possess a saturated cyclic carbon chain structure, exhibiting characteristics such as low pour point, high density, high viscosity, and non-toxicity. They typically also have saturated branched chains attached to their rings. This structure allows naphthenic oils to possess some properties of both aromatic and straight-chain hydrocarbons. Therefore, they can be used as plasticizers and filling oils for various rubbers to improve their plasticity and elasticity.

[0039] Hydrogenated styrene-butadiene block copolymer, also known as SEBS, is a linear triblock copolymer with polystyrene as the end block and ethylene-butene copolymer (obtained by hydrogenating polybutadiene) as the middle elastic block. SEBS does not contain unsaturated double bonds, thus exhibiting good UV stability, antioxidant and thermal stability, as well as good solubility, blending properties and oil-extending properties.

[0040] In some embodiments, the rubber modifier further includes at least one of butadiene-styrene-butadiene triblock copolymer, styrene-butadiene rubber, and butadiene-isoprene-butadiene triblock copolymer.

[0041] Butadiene-styrene-butadiene triblock copolymer, also known as SBS, is a triblock copolymer with styrene and butadiene as monomers. SBS-modified bitumen waterproof membranes exhibit excellent low-temperature flexibility, self-healing ability, durability, high-temperature flow resistance, aging resistance, thermal stability, and impact resistance, significantly improving the performance of waterproof membranes and extending their service life.

[0042] Styrene-butadiene rubber, also known as SBR, is prepared by using butadiene and styrene as the main monomers, along with other auxiliary chemical raw materials.

[0043] Butadiene-isoprene-butadiene triblock copolymer, also known as SIS, is an important thermoplastic elastomer.

[0044] Alternatively, the rubber modifier can be SEBS alone.

[0045] Alternatively, the rubber modifier can be a combination of SBS and SEBS.

[0046] Alternatively, the rubber modifier can be a combination of SBR and SEBS.

[0047] Alternatively, the rubber modifier can be a combination of SIS and SEBS.

[0048] Alternatively, the rubber modifier can be a combination of SBS, SBR, and SEBS.

[0049] Alternatively, the rubber modifier can be a combination of SBS, SIS, and SEBS.

[0050] Alternatively, the rubber modifier can be a combination of SBR, SIS, and SEBS.

[0051] Alternatively, the rubber modifier can be a combination of SBS, SBR, SIS, and SEBS.

[0052] Combining hydrogenated styrene-butadiene block copolymer (SEBS) with at least one of butadiene-styrene-butadiene triblock copolymer (SBS), styrene-butadiene rubber (SBR), and butadiene-isoprene-butadiene triblock copolymer (SIS) can improve the high and low temperature resistance, aging resistance, and cohesion of asphalt waterproof membrane mixtures.

[0053] In some embodiments, benzoquinone dioxime includes p-benzoquinone dioxime. Adding benzoquinone dioxime as a vulcanizing agent to asphalt waterproofing membranes can improve the tendency of rubber modifiers to decrease elongation under heated conditions, thereby reducing the amount of vulcanizing agent added to the asphalt waterproofing membrane. Benzoquinone dioxime, as a vulcanizing agent, has the characteristics of easy dispersion, shortened vulcanization time, wide range of uniform vulcanization temperature, and significant vulcanization degree. After establishing a co-vulcanization system, it can increase rubber strength, especially the retention rate of elongation strength after heat aging.

[0054] In some embodiments, the viscosity reducer may include at least one of polycarbonate, polypropylene wax, and polybutylene adipate. It can reduce the viscosity of the asphalt mixture system.

[0055] Optionally, the viscosity reducer can be polycarbonate. Polycarbonate (PC) is a tough thermoplastic resin that can be synthesized from bisphenol A and carbonyl chloride (COCl2) via melt exchange. It can withstand temperatures down to -45°C, achieves a flame retardancy rating of BI, possesses certain antioxidant properties, and exhibits good dimensional stability. Blending it with acrylonitrile-butadiene-styrene copolymer (ABS resin) can further improve the puncture resistance of the membrane. Polycarbonate is non-toxic, harmless, and self-extinguishing flame retardant, making asphalt waterproof membrane systems more environmentally friendly.

[0056] In some embodiments, the asphalt may include at least one of 90# asphalt, 70# asphalt, and 200# asphalt.

[0057] The specific type of asphalt can be selected based on the performance requirements of the asphalt waterproof membrane.

[0058] Optionally, the asphalt can be 90# asphalt.

[0059] In some embodiments, the petroleum resin may include at least one of C9 petroleum resin, coumarone resin, terpene resin, and acrylonitrile-butadiene-styrene copolymer. Because petroleum resin and natural rubber particles have good miscibility, petroleum resin has little impact on the rubber vulcanization process. Adding petroleum resin to asphalt waterproof membranes can increase adhesion, strengthen, and soften the membrane. Petroleum resin also has good compatibility with SIS and SBR rubber modifiers; their interaction can significantly improve the adhesion of the waterproof membrane and provide excellent anti-aging properties.

[0060] In some embodiments, the wax powder may include at least one of polyethylene wax, polypropylene wax, and polytetrafluoroethylene wax. A small amount of wax powder can significantly improve the high-temperature performance of asphalt waterproof membranes.

[0061] In some embodiments, the rubber powder may include waste tire rubber powder. Rubber powder is inexpensive and has a relatively complex composition, generally containing rubber, sulfur, carbon black, and antioxidants, etc., and can be used to modify asphalt to improve some high and low temperature properties and aging resistance.

[0062] In some embodiments, the filler may include at least one of 200-mesh talc, 300-mesh talc, and 500-mesh talc.

[0063] Optionally, the filler can be 200-mesh talc powder. Talc powder is inexpensive and has some fire-retardant properties.

[0064] In some embodiments, the viscosity of the modified bitumen waterproofing compound at 170°C can be 10,000-20,000 MPa·s.

[0065] Optionally, at 170°C, the viscosity can be 10,000-15,000 mPa·s.

[0066] Optionally, at 170°C, the viscosity can be 16000-20000 mPa·s.

[0067] Preparation method of modified bitumen waterproofing adhesive

[0068] A method for preparing a modified asphalt waterproofing compound includes the following steps: mixing materials containing asphalt and naphthenic oil at a preset temperature to obtain mixture I; adding a rubber modifier and petroleum resin to mixture I and keeping it at a certain temperature to obtain mixture II; adding a viscosity reducer, a vulcanizing agent, and rubber powder to mixture II and keeping it at a certain temperature to obtain mixture III; adding wax powder to mixture III and keeping it at a certain temperature to obtain mixture IV; adding a filler to mixture IV and keeping it at a certain temperature to obtain the modified asphalt waterproofing compound.

[0069] Optionally, in the step of mixing materials containing asphalt and naphthenic oil at a preset temperature, the asphalt is first heated to the preset temperature, and then naphthenic oil is added in proportion and heated to the preset temperature for mixing.

[0070] In some embodiments, in the step of mixing materials containing asphalt and naphthenic oil at a preset temperature, the preset temperature is 130-150°C, and the mixing is carried out by stirring at a speed of 700-900 rad / min.

[0071] Optionally, the preset temperature is 140-150℃, and the mixing is carried out by stirring at a speed of 800-900 rad / min.

[0072] In some embodiments, in the step of adding the rubber modifier and petroleum resin to the above mixture I, the temperature of heat preservation is 170-190°C, the heat preservation time is 0.8-1.2h, and the heat preservation is carried out by stirring at 900-1200 rad / min.

[0073] Optionally, the holding temperature is 175-185℃, the holding time is 0.9-1.1h, and the holding is carried out with stirring at 1000-1200rad / min.

[0074] In some embodiments, in the step of adding the viscosity reducer, vulcanizing agent and rubber powder to the above mixture II, the temperature of heat preservation is 170-190°C, the heat preservation time is 1.8-2.2h, and the heat preservation is carried out by stirring at 900-1200 rad / min.

[0075] Optionally, the holding temperature is 175-185℃, the holding time is 2.0-2.2h, and the holding is carried out with stirring at 1000-1200rad / min.

[0076] In some embodiments, in the step of adding wax powder to the above mixture III, the temperature of heat preservation is 170-190°C, the heat preservation time is 15-30 min, and the heat preservation is carried out by stirring at 900-1200 rad / min.

[0077] Optionally, the holding temperature is 175-185℃, the holding time is 20-30 min, and the holding is carried out with stirring at 1000-1200 rad / min.

[0078] In some embodiments, in the step of adding the filler to the above mixture IV, the holding temperature is 170-190°C, the holding time is 0.8-1.2 h, and the holding is carried out with stirring at 900-1200 rad / min.

[0079] Optionally, the holding temperature is 175-185℃, the holding time is 0.8-1.0h, and the holding is carried out with stirring at 1000-1200rad / min.

[0080] Aging-resistant modified bitumen waterproof membrane

[0081] An aging-resistant modified bitumen waterproof membrane is made using the modified bitumen waterproof adhesive or the modified bitumen waterproof adhesive obtained by the above preparation method, comprising the following steps: pressing the modified bitumen waterproof adhesive and the face film together with rollers to form a shape, cooling, and then covering with a release film, shaping and rolling to obtain the aging-resistant modified bitumen waterproof membrane.

[0082] In some embodiments, the face film is a weather-resistant PE+PET composite film, and the bottom film is an aluminized PET film. The face film and the bottom film are transported to the discharge port by rollers. The adhesive and the face film are extruded and shaped by two rollers. After being cooled in a water cooling tank (30-40℃), the film is covered with a release film, shaped and rolled up to finally obtain an aging-resistant modified bitumen waterproof membrane.

[0083]

Example

[0084] Raw material source:

[0085] Hydrogenated styrene-butadiene block copolymer: Wuhan Kemike Biomedical Technology Co., Ltd. (CAS No. 66070-58-4).

[0086] Petroleum resin: Zibo Xinle Chemical Co., Ltd. (C9 dark petroleum resin).

[0087] Polycarbonate: Dongguan Lilong Engineering Plastics Co., Ltd. (PC 943A).

[0088] Adhesive powder: Lingshou County Baixin New Material Technology Co., Ltd. (60 mesh).

[0089] Wax powder: Yinhuang (Shanghai) Industrial Co., Ltd. (AC-629A).

[0090] Butadiene-styrene-butadiene triblock copolymer: Guangzhou Zhisheng Yousu Petrochemical Co., Ltd. (YH-791).

[0091] Styrene-butadiene rubber: Jinan Keruida Chemical Co., Ltd. (9003-55-8).

[0092] Polypropylene: Binzhou Huayuan Plastics Technology Co., Ltd. (PP).

[0093] Example 1

[0094] 35% (by weight) of 90# asphalt is piped into a mixing tank and heated to 130°C. Then, 5% (by weight) of naphthenic oil is added, and the temperature is gradually increased to 150°C. The screw agitator is turned on and the speed is controlled at 800 rad / min. Next, the mixing tank is opened, and 6% (by weight) of hydrogenated styrene-butadiene block copolymer and 10% (by weight) of petroleum resin are added. The temperature is allowed to rise to 180°C, and the heating is stopped. The speed is controlled at 1000 rad / min, and the temperature is maintained for 1 hour. Then, 5% (by weight) of polycarbonate (PC), 0.1% (by weight) of p-benzoquinone dioxime, and 10% (by weight) of rubber powder are added, and the temperature is maintained for 2 hours. Then, 1% (by weight) of wax powder is added and the temperature is maintained for 20 minutes. Finally, 27.9% (by weight) of 200-mesh talc powder is added, and the temperature is maintained for 1 hour. This yields the rubber compound for aging-resistant modified asphalt waterproof membrane.

[0095] The face film is made of weather-resistant PE+PET composite film, and the bottom film is made of aluminized PET film. It is transported to the discharge port by rollers. The upper and lower rollers squeeze the adhesive and the face film together to form the shape. After cooling in a water cooling pool (30-40℃), it is covered with a release film, shaped and rolled up, and finally the aging-resistant modified bitumen waterproof membrane is obtained.

[0096] Example 2

[0097] The experimental procedure was the same as in Example 1, except that the hydrogenated styrene-butadiene block copolymer was changed to a hydrogenated styrene-butadiene block copolymer and a butadiene-styrene-butadiene triblock copolymer with a mass ratio of 2:1, to obtain an aging-resistant modified bitumen waterproof membrane.

[0098] Example 3

[0099] The experimental procedure was the same as in Example 1, except that the hydrogenated styrene-butadiene block copolymer was changed to a combination of hydrogenated styrene-butadiene block copolymer and styrene-butadiene rubber with a mass ratio of 2:1, to obtain an aging-resistant modified bitumen waterproof membrane.

[0100] Example 4

[0101] The experimental procedure was the same as in Example 1, except that the mass percentage of the hydrogenated styrene-butadiene block copolymer was changed to 8% and the mass percentage of talc was changed to 25.9%, resulting in an aging-resistant modified bitumen waterproof membrane.

[0102] Example 5

[0103] The experimental procedure was the same as in Example 1, except that the mass percentage of p-benzoquinone dioxime was changed to 0.2% and the mass percentage of talc was changed to 27.8%, resulting in an aging-resistant modified bitumen waterproof membrane.

[0104] Example 6

[0105] The experimental procedure was the same as in Example 1, except that the polycarbonate content was changed to 7% and the mass percentage of talc was changed to 25.9%, resulting in an aging-resistant modified bitumen waterproof membrane.

[0106] Example 7

[0107] The experimental procedure was the same as in Example 1, except that polycarbonate was replaced with polypropylene, resulting in an aging-resistant modified bitumen waterproof membrane.

[0108] Comparative Example 1

[0109] The experimental procedure was the same as in Example 1, except that p-benzoquinone dioxime was replaced with thiuram, resulting in modified bitumen waterproof membrane.

[0110] Comparative Example 2

[0111] The experimental procedure was the same as in Example 1, except that the mass percentage of p-benzoquinone dioxime was changed from 0.1% to 0.3% of thiuram, and the mass percentage of talc was 27.7%, resulting in modified bitumen waterproof membrane.

[0112] Comparative Example 3

[0113] The experimental procedure was the same as in Example 1, except that the hydrogenated styrene-butadiene block copolymer was replaced with butyl rubber to obtain the modified bitumen waterproof membrane.

[0114] Comparative Example 4

[0115] The experimental procedure was the same as in Example 1, except that the hydrogenated styrene-butadiene block copolymer was changed to butyl rubber, and the mass percentage of p-benzoquinone dioxime was changed to 0.3%, and the mass percentage of talc was changed to 27.7%, to obtain the modified bitumen waterproof membrane.

[0116] Comparative Example 5

[0117] The experimental procedure was the same as in Example 1, except that the hydrogenated styrene-butadiene block copolymer was replaced with butyl rubber and the p-benzoquinone dioxime was replaced with thiuram, resulting in a modified bitumen waterproof membrane.

[0118] Comparative Example 6

[0119] The experimental procedure was the same as in Example 1, except that the hydrogenated styrene-butadiene block copolymer was replaced with butyl rubber, the mass percentage of p-benzoquinone dioxime was changed from 0.1% to 0.4% by mass of thiuram, and the mass percentage of talc was 27.6%, resulting in a modified bitumen waterproof membrane.

[0120] Comparative Example 7

[0121] The experimental procedure was the same as in Example 1, except that the mass percentage of polycarbonate was changed to 2% and the mass percentage of talc was changed to 30.9%.

[0122] Data Analysis

[0123] The aging resistance and viscosity of the modified bitumen waterproof membranes in Examples 1-7 and Comparative Examples 1-7 were tested.

[0124] Test method for aging resistance: Low-temperature performance after aging is tested according to national standard GB 23441-2009;

[0125] Viscosity testing method: Refer to GB / T 10247-2008 Viscosity Measurement Method.

[0126] The results are shown in Table 1:

[0127] Table 1

[0128] Serial Number Aging resistance Viscosity Example 1 -20℃ limit 12138 Example 2 -20℃ limit 12987 Example 3 -20℃ limit 12553 Example 4 -22℃ limit 13652 Example 5 -22℃ limit 14122 Example 6 -21℃ limit 10124 Example 7 -18℃ limit 12166 Comparative Example 1 -17℃ limit 13127 Comparative Example 2 -20℃ limit 21014 Comparative Example 3 -18℃ limit 12556 Comparative Example 4 -20℃ limit 19982 Comparative Example 5 -16℃ limit 18990 Comparative Example 6 -20℃ limit 23264 Comparative Example 7 -18℃ limit 25422

[0129] As can be seen from Comparative Example 1, when the vulcanizing agent is thiuram, the aging resistance performance in Example 1 is not achieved. As can be seen from Comparative Example 2, when the vulcanizing agent is thiuram, the amount of vulcanizing agent needs to be increased to 0.3% in order to achieve the aging resistance performance in Example 1. This results in an increase in the viscosity of the modified asphalt waterproofing compound, thereby reducing production efficiency.

[0130] As can be seen from Comparative Example 3, when the rubber modifier is butyl rubber, the aging resistance performance in Example 1 is not achieved. As can be seen from Comparative Example 4, when the rubber modifier is butyl rubber, the amount of vulcanizing agent needs to be increased to 0.3% in order to achieve the aging resistance performance in Example 1. This results in an increase in the viscosity of the modified asphalt waterproofing compound, thereby reducing production efficiency.

[0131] As shown in Comparative Example 5, when the rubber modifier is butyl rubber and the vulcanizing agent is thiuram, the aging resistance performance in Example 1 is not achieved. As shown in Comparative Example 6, when the rubber modifier is butyl rubber and the vulcanizing agent is thiuram, the amount of vulcanizing agent needs to be increased to 0.4% in order to achieve the aging resistance performance in Example 1. This results in an increase in the viscosity of the modified asphalt waterproofing compound, thereby reducing production efficiency.

[0132] As shown in Comparative Example 7, when the amount of viscosity reducer added is too low, it will reduce the aging resistance of the modified asphalt waterproofing adhesive and increase the viscosity of the modified asphalt waterproofing adhesive.

[0133] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. An aging-resistant modified bitumen waterproofing adhesive, characterized in that, The modified bitumen waterproofing adhesive comprises, by weight percentage: Asphalt 35%-40%; Naphthenic oil 3%-6%; Rubber modifier 5%-10%; Vulcanizing agent 0.1%-0.2%; Viscosity reducer 5%-10%; Petroleum resin 8%-15%; Wax powder 1%-2%; Adhesive powder 8%-12%; Filler content: 20%-40%; The total mass ratio of the modified bitumen waterproofing adhesive is 100%. The rubber modifier is a hydrogenated styrene-butadiene block copolymer, or The rubber modifier comprises hydrogenated styrene-butadiene block copolymer and styrene-butadiene rubber in a mass ratio of 2:1, or The rubber modifier includes hydrogenated styrene-butadiene block copolymer and butadiene-styrene-butadiene triblock copolymer in a mass ratio of 2:1; The vulcanizing agent includes p-benzoquinone dioxime; The viscosity reducer includes at least one of polycarbonate, polypropylene wax, and polybutylene adipate, and the wax powder includes at least one of polyethylene wax and polytetrafluoroethylene wax.

2. The modified bitumen waterproofing adhesive according to claim 1, characterized in that, The petroleum resin includes C9 petroleum resin.

3. The modified bitumen waterproofing adhesive according to claim 1, characterized in that, The rubber powder includes waste tire rubber powder; and / or, The filler includes at least one of 200-mesh talc powder, 300-mesh talc powder, and 500-mesh talc powder.

4. The modified bitumen waterproofing adhesive according to claim 1, characterized in that, At 170 ℃, the viscosity of the modified asphalt waterproofing adhesive is 10000-20000 mpa·s.

5. A method for preparing the modified bitumen waterproofing adhesive according to any one of claims 1-4, characterized in that, Includes the following steps: Materials containing asphalt and naphthenic oil are mixed at a preset temperature to obtain mixture I; Add the rubber modifier and petroleum resin to the above mixture I, and after heat preservation, obtain mixture II; Add the viscosity reducer, vulcanizing agent and rubber powder to the above mixture II, and keep it at a certain temperature to obtain mixture III; Add wax powder to mixture III above, and keep it at a certain temperature to obtain mixture IV; The filler was added to the above mixture IV, and after heat preservation, the modified bitumen waterproof adhesive was obtained.

6. The preparation method according to claim 5, characterized in that, In the step of mixing materials containing asphalt and naphthenic oil at a preset temperature of 130-150 °C, the mixing is carried out by stirring at a speed of 700-900 rad / min; and / or, In the step of adding the rubber modifier and petroleum resin to the above mixture I, the holding temperature is 170-190 °C, the holding time is 0.8-1.2 h, and the holding is carried out with stirring at 900-1200 rad / min; and / or, In step II, where the viscosity reducer, vulcanizing agent, and rubber powder are added to the above mixture, the holding temperature is 170-190 °C, the holding time is 1.8-2.2 h, and the holding is carried out with stirring at 900-1200 rad / min; and / or, In step III, where the wax powder is added, the temperature is maintained at 170-190 °C for 15-30 min, and stirring is carried out at 900-1200 rad / min; and / or, In the step of adding the filler to the above mixture IV, the holding temperature is 170-190 ℃, the holding time is 0.8-1.2 h, and the holding is carried out with stirring at 900-1200 rad / min.

7. An aging-resistant modified bitumen waterproof membrane, characterized in that, The modified bitumen waterproofing adhesive is prepared using any one of the modified bitumen waterproofing adhesives according to claims 1-4 or the preparation method described in claim 5 or 6, and includes the following steps: The modified bitumen waterproofing compound and the face film are extruded together by rollers to form a mold. After cooling, the membrane is covered with a release film, shaped and rolled to obtain the aging-resistant modified bitumen waterproofing membrane.