Butyl pressure-sensitive adhesive and pre-paved waterproof roll applying same

文档序号：373544 发布日期：2021-12-10 浏览：54次中文

阅读说明：本技术 丁基压敏胶及应用该丁基压敏胶的预铺防水卷材 (Butyl pressure-sensitive adhesive and pre-paved waterproof roll applying same ) 是由杨宁胡全超于 2021-09-02 设计创作，主要内容包括：本申请提供一种丁基压敏胶及应用该丁基压敏胶的预铺防水卷材,丁基压敏胶的原料组分按重量份计包括：异丁烯类橡胶100份；液体橡胶80～180份；增塑剂55～85份；增粘树脂60～130份；填料80～180份；抗氧化剂1～2份；交联剂1～2份；交联促进剂0.5～1份；耐油助剂8～15份,其中,液体橡胶选自液体丁腈橡胶和液体氯丁橡胶中的至少一者。本申请的丁基压敏胶具有优异的耐油性能。(The application provides a butyl pressure-sensitive adhesive and use this butyl pressure-sensitive adhesive's pre-paved waterproofing membrane, the raw materials components of butyl pressure-sensitive adhesive include by weight: 100 parts of isobutylene rubber; 80-180 parts of liquid rubber; 55-85 parts of a plasticizer; 60-130 parts of tackifying resin; 80-180 parts of a filler; 1-2 parts of an antioxidant; 1-2 parts of a crosslinking agent; 0.5-1 part of a crosslinking accelerator; 8-15 parts of oil-resistant auxiliary agent, wherein the liquid rubber is at least one selected from liquid nitrile rubber and liquid chloroprene rubber. The butyl pressure sensitive adhesive has excellent oil resistance.)

1. The butyl pressure-sensitive adhesive comprises the following raw material components in parts by weight:

wherein the liquid rubber is selected from at least one of liquid nitrile rubber and liquid chloroprene rubber.

2. The butyl pressure sensitive adhesive according to claim 1, wherein the bound acrylonitrile content in the liquid nitrile rubber is 30% to 50%, the number average molecular weight of the liquid nitrile rubber is 2000 to 4000, and the number average molecular weight of the liquid chloroprene rubber is 2000 to 4000.

3. The butyl pressure sensitive adhesive of claim 1, wherein the crosslinking agent is an organic peroxide based crosslinking agent, preferably at least one of 2, 5-dimethyl-2, 5-bis (t-butylperoxy) hexane, 2, 4-dichlorobenzoyl peroxide, dicumyl peroxide;

the crosslinking accelerator is at least one selected from thiuram accelerators, dithiocarbamate accelerators and sulfenamide accelerators, preferably at least one selected from tetramethylthiuram disulfide, zinc dibutyldithiocarbamate and N-cyclohexyl-2-benzothiazylsulfenamide.

4. The butyl pressure sensitive adhesive of claim 1, wherein the oil resistant adjuvant is a polyester plasticizer.

5. The butyl pressure sensitive adhesive of any one of claims 1-4, comprising the following raw material components in parts by weight:

6. the butyl pressure sensitive adhesive of claim 1, wherein the isobutylene-based rubber is at least one selected from the group consisting of butyl rubber and halogenated butyl rubber, the isobutylene-based rubber is preferably a mixture of butyl rubber, brominated butyl rubber and chlorinated butyl rubber, and more preferably the butyl rubber, brominated butyl rubber and chlorinated butyl rubber are present in a mass ratio of 30: (30-50): (30-50).

7. The butyl pressure sensitive adhesive of claim 1, wherein the plasticizer comprises polyisobutylene, preferably having a number average molecular weight of 800 to 1500; and/or

The tackifying resin is at least one selected from petroleum resin, hydrogenated petroleum resin, rosin resin and terpene resin, preferably a mixture of terpene resin and petroleum resin, and more preferably a mixture of terpene resin and petroleum resin in a mass ratio of 1: 1-1: 2; and/or

The filler comprises kaolin and fumed silica, and is preferably a mixture of the kaolin and the fumed silica in a mass ratio of 1: 1-1: 2; and/or

The antioxidant is selected from at least one of a hindered phenolic antioxidant, a phosphite antioxidant, a hindered phenolic and a phosphite complex antioxidant, preferably from at least one of a hindered phenolic antioxidant and a phosphite antioxidant in combination, a hindered phenolic and a phosphite complex antioxidant.

8. The butyl pressure-sensitive adhesive according to claim 7, wherein the kaolin is 800-1250-mesh kaolin, and the specific surface area of the fumed silica is not less than 200m²(ii)/g; and/or

The antioxidant is selected from at least one of antioxidant 1010, antioxidant 168, antioxidant 1330, antioxidant B225, preferably comprises a combination of at least one of antioxidant 1010 or antioxidant 1330 and antioxidant 168, and/or comprises antioxidant B225.

9. A pre-laid waterproofing membrane comprising a surface release protective layer, a self-adhesive layer and a bulk waterproofing material layer, wherein the self-adhesive layer comprises the butyl pressure sensitive adhesive according to any one of claims 1 to 8.

10. The roll of pre-applied waterproofing membrane according to claim 9, wherein the surface anti-sticking layer comprises at least one of a particle layer and a coating layer, the particle layer comprises at least one of machine-made sand, sintered sand, artificially coated colored sand, natural colored sand, mineral sand, river sand, cement sintered particles, cement hydrated particles, inorganic particles or organic particles coated with artificial, mullite sand, reaction sand, quartz sand, preferably mullite sand layer, and the coating layer comprises at least one of an acrylate-based coating or a polyurethane-based coating;

the main waterproof material layer is a high-molecular sheet layer or a composite layer of a high-molecular sheet and grid cloth, and is preferably a synthetic high-molecular sheet layer;

the main body waterproof material comprises one or more of polyethylene, polypropylene, ethylene-olefin copolymer, polyvinyl acetate, polyacrylate, polyethylacrylate, polytetrafluoroethylene, polyvinylidene fluoride, polyethylene terephthalate, polyvinyl chloride, polyamide, polylactic acid, thermoplastic polyurethane elastomer rubber TPU, thermoplastic vulcanized rubber TPV, high density polyethylene HDPE, thermoplastic polyolefin TPO and ethylene-vinyl acetate copolymer EVA;

the mesh fabric is selected from woven mesh fabric or non-woven mesh fabric, and preferably, the mesh fabric comprises at least one of polyester fiber, glass fiber, carbon fiber, aramid fiber, nylon fiber, polypropylene fiber and polyimide fiber.

11. The pre-paved waterproof roll material as claimed in claim 9 or 10, wherein the peel strength of the pre-paved waterproof roll material after being soaked in oil with post-poured concrete is more than or equal to 1.5N/mm;

the method for testing the peeling strength of the pre-paved waterproof roll and the post-poured concrete after oil immersion comprises the following steps:

preparing an untreated post-cast concrete test piece, wherein the method comprises the steps of preparing the pre-paved waterproof coiled material into the untreated post-cast concrete test piece according to the method in GB/T23457-2017;

preparing an oil-impregnated post-cast concrete test piece, which comprises soaking the untreated post-cast concrete test piece in 0# diesel oil for 28 days in a standard laboratory environment to obtain the oil-impregnated post-cast concrete test piece;

and testing the peel strength of the pre-paved waterproof coiled material and the post-cast concrete after oil immersion, wherein the step of testing the peel strength of the post-cast concrete test piece after oil immersion comprises testing the peel strength of the post-cast concrete test piece after oil immersion according to the method in GB/T23457-2017, so that the peel strength of the pre-paved waterproof coiled material and the post-cast concrete after oil immersion is obtained.

Technical Field

The application belongs to the technical field of waterproof materials, and particularly relates to a butyl pressure-sensitive adhesive and a pre-paved waterproof roll applying the butyl pressure-sensitive adhesive.

Background

The high-molecular pre-paved waterproof coiled material has the advantages of aging resistance, high strength, high tearing performance, acid, alkali salt resistance and the like. The self-adhesive layer of the polymer pre-paved waterproof roll usually takes hot-melt pressure-sensitive adhesive or butyl pressure-sensitive adhesive as a main component. The butyl pressure-sensitive adhesive has excellent aging resistance, better air tightness and water tightness, and is more suitable for being used in pre-paved waterproof engineering.

However, oil impurities often exist in construction sites of pre-paved waterproof engineering, and the conventional butyl pressure-sensitive adhesive is easily dissolved by the oil impurities, so that the adhesion performance of a coiled material and a building is influenced, and the water channeling phenomenon is caused.

Disclosure of Invention

The application provides a butyl pressure-sensitive adhesive in a first aspect, which comprises the following raw material components in parts by weight:

wherein the liquid rubber is selected from at least one of liquid nitrile rubber and liquid chloroprene rubber.

According to the butyl pressure-sensitive adhesive of the first aspect of the application, the raw material comprises a specific liquid rubber, and the liquid rubber is crosslinked to form a network structure under the action of a crosslinking agent. The reticular structure has oil resistance and can be used as an oil-resistant protective layer, so that the oil resistance of the butyl pressure-sensitive adhesive is improved. According to the butyl pressure-sensitive adhesive of the first aspect of the application, through the synergistic effect of the specific combination of the liquid rubber and the cross-linking agent and the oil-resistant auxiliary agent and other auxiliary agents, the butyl pressure-sensitive adhesive has excellent oil resistance and good air tightness and water tightness.

In an optional embodiment of the first aspect of the present application, the bound acrylonitrile content of the liquid nitrile rubber is 30% to 50%, the number average molecular weight of the liquid nitrile rubber is 2000 to 4000, and the number average molecular weight of the liquid chloroprene rubber is 2000 to 4000.

In an alternative embodiment of the first aspect of the present application, the crosslinking agent is an organic peroxide crosslinking agent, preferably at least one of 2, 5-dimethyl-2, 5-bis (t-butylperoxy) hexane, 2, 4-dichlorobenzoyl peroxide, and dicumyl peroxide.

In an alternative embodiment of the first aspect of the present application, the crosslinking accelerator is at least one selected from thiuram accelerators, dithiocarbamate accelerators and sulfenamide accelerators, preferably at least one selected from tetramethylthiuram disulfide, zinc dibutyldithiocarbamate and N-cyclohexyl-2-benzothiazylsulfenamide.

In an alternative embodiment of the first aspect of the present application, the oil resistant auxiliary is a polyester plasticizer.

In an alternative embodiment of the first aspect of the present application, the butyl pressure sensitive adhesive comprises the following raw material components by weight:

in an alternative embodiment of the first aspect of the present application, the isobutylene based rubber is selected from at least one of butyl rubber and halogenated butyl rubber. Specifically, the isobutylene-based rubber is a mixture of butyl rubber, bromobutyl rubber and chlorobutyl rubber, and more specifically, the mass ratio of butyl rubber, bromobutyl rubber and chlorobutyl rubber is 30: (30-50): (30-50).

In an alternative embodiment of the first aspect of the present application, the plasticizer comprises polyisobutylene, and specifically comprises polyisobutylene with a number average molecular weight of 800 to 1500.

In an alternative embodiment of the first aspect of the present application, the tackifying resin is at least one selected from the group consisting of petroleum resins, hydrogenated petroleum resins, rosin resins, and terpene resins. Specifically, the tackifying resin is a mixture of terpene resin and petroleum resin. More specifically, the tackifying resin is a mixture of terpene resin and petroleum resin in a mass ratio of 1: 1-1: 2.

In an alternative embodiment of the first aspect of the present application, the filler comprises kaolin and fumed silica. Specifically, the filler is a mixture of kaolin and fumed silica in a mass ratio of 1: 1-1: 2.

In an alternative embodiment of the first aspect of the present application, the antioxidant is at least one selected from the group consisting of hindered phenolic antioxidants, phosphite antioxidants, hindered phenols, and phosphite complex antioxidants. Specifically, the above antioxidant is selected from at least one of a combination of a hindered phenol-based antioxidant and a phosphite-based antioxidant, a hindered phenol-based antioxidant, and a phosphite-based complex antioxidant.

In an optional embodiment of the first aspect of the present application, the kaolin is 800-1250 mesh kaolin, and the fumed silica has a specific surface area of not less than 200m²/g。

In an alternative embodiment of the first aspect of the present application, the antioxidant is selected from at least one of antioxidant 1010, antioxidant 168, antioxidant 1330, antioxidant B225. Specifically, the antioxidant comprises a combination of at least one of antioxidant 1010 or antioxidant 1330 and antioxidant 168, and/or comprises antioxidant B225.

The application second aspect provides a shop's waterproofing membrane in advance, including the antiseized protective layer in surface, from viscose layer and main part waterproof material layer, wherein, the self-adhesive layer contains the butyl pressure sensitive adhesive according to any one of the embodiment of the first aspect of this application.

According to the roll of pre-applied waterproofing of the second aspect of the present application, the self-adhesive layer thereof comprises the butyl pressure-sensitive adhesive according to any one of the embodiments of the first aspect of the present application, and thus has excellent oil resistance, air tightness and water tightness.

In an alternative embodiment of the second aspect of the present application, the surface release protective layer comprises at least one of a particle layer and a coating layer. The granular layer comprises at least one of machine-made sand, sintered sand, artificially coated colored sand, natural colored sand, ore sand, river sand, cement sintered particles, cement hydrated particles, artificially coated inorganic particles or organic particles, mullite sand, reaction sand and quartz sand, and specifically is a mullite sand layer. The coating layer includes at least one of an acrylate-based coating or a polyurethane-based coating.

Main part waterproof material layer the main part waterproof material layer is polymer sheet layer or the composite bed of polymer sheet and net cloth, specifically is synthetic polymer sheet layer.

The main body waterproof material comprises one or more of polyethylene, polypropylene, ethylene-olefin copolymer, polyvinyl acetate, polyacrylate, polyethylacrylate, polytetrafluoroethylene, polyvinylidene fluoride, polyethylene terephthalate, polyvinyl chloride, polyamide, polylactic acid, thermoplastic polyurethane elastomer rubber TPU, thermoplastic vulcanized rubber TPV, high density polyethylene HDPE, thermoplastic polyolefin TPO and ethylene-vinyl acetate copolymer EVA.

The mesh fabric is selected from woven mesh fabric or non-woven mesh fabric, and specifically, the mesh fabric comprises at least one of polyester fiber, glass fiber, carbon fiber, aramid fiber, nylon fiber, polypropylene fiber and polyimide fiber.

In an optional embodiment of the second aspect of the present application, the peel strength of the pre-paved waterproof roll and the post-poured concrete after being soaked in oil is more than or equal to 1.5N/mm;

the method for testing the peeling strength of the pre-paved waterproof roll and the post-poured concrete after being soaked in oil comprises the following steps:

preparing an untreated post-cast concrete test piece, which comprises preparing a pre-paved waterproof coiled material into the untreated post-cast concrete test piece according to the method in GB/T23457-2017;

the method comprises the steps of preparing an oil-impregnated post-cast concrete test piece, wherein the step of preparing the oil-impregnated post-cast concrete test piece comprises the step of soaking an untreated post-cast concrete test piece in 0# diesel oil for 28 days in a standard laboratory environment to obtain the oil-impregnated post-cast concrete test piece;

the step of testing the peeling strength of the pre-paved waterproof roll and the post-poured concrete after oil immersion comprises testing the peeling strength of the post-poured concrete test piece after oil immersion according to the method in GB/T23457-2017, so as to obtain the peeling strength of the pre-paved waterproof roll and the post-poured concrete after oil immersion.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on the drawings without any creative effort.

Fig. 1 is a schematic view of an internal structure of a butyl pressure-sensitive adhesive according to an embodiment of the present disclosure.

Detailed Description

In order to make the purpose, technical solution and advantageous technical effects of the present invention clearer, the present invention is further described in detail with reference to the following embodiments. It should be understood that the embodiments described in this specification are only for the purpose of explaining the present application and are not intended to limit the present application.

For the sake of brevity, only some numerical ranges are explicitly disclosed herein. However, any lower limit may be combined with any upper limit to form ranges not explicitly recited; and any lower limit may be combined with any other lower limit to form a range not explicitly recited, and similarly any upper limit may be combined with any other upper limit to form a range not explicitly recited. Also, although not explicitly recited, each point or individual value between endpoints of a range is encompassed within the range. Thus, each point or individual value can form a range not explicitly recited as its own lower or upper limit in combination with any other point or individual value or in combination with other lower or upper limits.

In the description herein, when a composition is described as containing, comprising, or including a particular component, or when a process is described as containing, comprising, or including a particular process step, it is contemplated that the composition of the present application also consists essentially of, or consists of, the component, and that the process of the present application also consists essentially of, or consists of, the process step.

The use of the terms "comprising," "including," "containing," and "having" are generally to be construed as open-ended and non-limiting unless otherwise expressly specified.

In the description herein, it is to be noted that, unless otherwise specified, "above" and "below" are inclusive, and "a plurality" of "one or more" means two or more.

The above summary of the present application is not intended to describe each disclosed embodiment or every implementation of the present application. The following description more particularly exemplifies illustrative embodiments. At various points throughout this application, guidance is provided through a list of embodiments that can be used in various combinations. In each instance, the list is merely a representative group and should not be construed as exhaustive.

Oil impurities often exist in a construction site of pre-paved waterproof engineering, and the conventional butyl pressure-sensitive adhesive is easily dissolved by the oil impurities, so that the adhesion performance of a coiled material and a building is influenced, and the water channeling phenomenon is caused. Therefore, it is highly desirable to provide a butyl pressure sensitive adhesive with good oil resistance to improve the environmental suitability of pre-laid waterproofing rolls.

In view of this, the application provides a butyl pressure-sensitive adhesive and a pre-paved waterproof roll using the same.

The application provides a butyl pressure-sensitive adhesive in a first aspect, which comprises the following raw material components in parts by weight:

wherein the liquid rubber is selected from at least one of liquid nitrile rubber and liquid chloroprene rubber.

The inventors have found that the oil resistance of the rubber material is related to the polarity thereof. The macromolecular main chains of the liquid nitrile rubber and the liquid chloroprene rubber contain polar groups, and the liquid nitrile rubber and the liquid chloroprene rubber have excellent stability in nonpolar oil impurities. The liquid nitrile rubber or liquid chloroprene rubber is added into the butyl pressure-sensitive adhesive, so that the oil resistance of the butyl pressure-sensitive adhesive can be greatly improved.

In addition, without intending to be bound by any theory or explanation, the inventors have unexpectedly found that the liquid rubber can be formed into a crosslinked network-shaped polymer chain having oil resistance by controlling the kind and amount of the raw material components of the butyl pressure-sensitive adhesive within the above-mentioned appropriate ranges. As shown in fig. 1, the crosslinked network polymer chain can wrap the non-polar group inside the butyl pressure-sensitive adhesive to form an oil-resistant protective layer, thereby improving the oil resistance of the butyl pressure-sensitive adhesive.

In some embodiments, the bound acrylonitrile content in the liquid nitrile rubber may be 30% to 50%.

The inventors have found that the higher the bound acrylonitrile content of the liquid nitrile rubber, the more polar it is, and the more oil resistance of the butyl pressure sensitive adhesive is enhanced. However, as the bound acrylonitrile content of the liquid nitrile rubber increases, the flexibility of the molecular chain decreases, thereby adversely affecting the low temperature flexibility of the butyl pressure sensitive adhesive. The content of the bound acrylonitrile in the liquid nitrile rubber is controlled within the proper range, so that the butyl pressure-sensitive adhesive has excellent oil resistance and good low-temperature flexibility.

In some embodiments, the number average molecular weight of the liquid nitrile rubber may be 2000 to 4000, and the number average molecular weight of the liquid chloroprene rubber may be 2000 to 4000.

The molecular weight has a great influence on both the service properties and the processability of the rubber. When the molecular weight of the liquid rubber is large, the intermolecular force is increased correspondingly, the molecular chain is not easy to move, the tensile strength and elasticity are increased, the plasticity is reduced, and the processability is deteriorated. On the contrary, when the molecular weight of the liquid rubber is small, the intermolecular force is correspondingly reduced, the molecular chain is easy to move, and the plasticity and the processability of the liquid rubber are improved, but the crosslinking of the liquid rubber is hindered, so that the oil resistance of the butyl pressure-sensitive adhesive is reduced. The molecular weight of the liquid nitrile rubber and the liquid chloroprene rubber is controlled in the proper range, so that the liquid nitrile rubber and the liquid chloroprene rubber have good processing performance and use performance, and further the low-temperature flexibility and oil resistance of the butyl pressure-sensitive adhesive are improved.

In some embodiments, the crosslinking agent may be an organic peroxide-based crosslinking agent. Preferably, the crosslinking agent may include at least one of 2, 5-dimethyl-2, 5-bis (t-butylperoxy) hexane, 2, 4-dichlorobenzoyl peroxide, and dicumyl peroxide.

The cross-linked product formed by the organic peroxide and the liquid rubber has small permanent deformation, no pollution and good heat resistance. The butyl pressure-sensitive adhesive containing the organic peroxide crosslinking agent in the raw material components has good mechanical property and thermal aging resistance.

In some embodiments, the crosslinking accelerator may be selected from at least one of thiuram accelerators, dithiocarbamate accelerators, and sulfenamide accelerators. Preferably, the crosslinking accelerator may include at least one of tetramethylthiuram disulfide, zinc dibutyldithiocarbamate, and N-cyclohexyl-2-benzothiazylsulfenamide.

The crosslinking accelerator can effectively improve the vulcanization crosslinking speed of the liquid rubber and improve the 300 percent stress at definite elongation and the tensile strength of the butyl pressure-sensitive adhesive.

Among the crosslinking accelerators, the thiuram accelerator is an acidic accelerator, and a product obtained by using the thiuram accelerator has good compression set, but the safety in the crosslinking process is not easy to control; the sulfenamide accelerator is an acid-base combined type and slow-acting accelerator, has high safety, and the cross-linking density of a product obtained by using the sulfenamide accelerator alone is low.

In some embodiments, the crosslinking accelerator may preferably be a combination of thiuram-type accelerators and sulfenamide-type accelerators, for example the crosslinking accelerator may be a mixture of tetramethylthiuram disulfide and N-cyclohexyl-2-benzothiazolesulfenamide.

In some embodiments, the oil resistant additive may be a polyester plasticizer.

The liquid nitrile rubber and the liquid chloroprene rubber have small molecular weight, certain volatility and extractability. The polyester plasticizer has high molecular weight, low volatility, low migration and oil extraction resistance, and is a plasticizer with good heat resistance and durability. However, polyester plasticizers are inferior in moldability and low-temperature properties. The polyester plasticizer is applied to the butyl pressure-sensitive adhesive, and can be balanced with the modification effect of liquid nitrile rubber and liquid chloroprene rubber, so that the butyl pressure-sensitive adhesive has oil resistance, heat resistance, cold resistance and plasticizing effect.

In some embodiments, the butyl pressure sensitive adhesive may comprise the following raw material components by weight:

the raw material components of the butyl pressure-sensitive adhesive are in the proper range, so that the oil resistance of the butyl pressure-sensitive adhesive can be further improved.

In some embodiments, the isobutylene-based rubber may be selected from at least one of butyl rubber and halogenated butyl rubber.

In one particular example, the isobutylene-based rubber may be a mixture of butyl rubber, bromobutyl rubber and chlorobutyl rubber. Among them, the mass ratio of the butyl rubber, the brominated butyl rubber and the chlorinated butyl rubber may preferably be 30: (30-50): (30-50).

Butyl rubber has outstanding water and air tightness properties, but poor blendability with other rubbers. After the butyl rubber is halogenated, the blending property of the butyl rubber and other rubbers can be greatly improved, and the bonding property of the butyl rubber is also obviously improved. However, the production cost of halogenated butyl rubber is high at present. The butyl pressure-sensitive adhesive which takes the mixture of the butyl rubber, the brominated butyl rubber and the chlorinated butyl rubber as the matrix rubber and controls the mass ratio of the butyl rubber, the brominated butyl rubber and the chlorinated butyl rubber within the proper range not only has outstanding watertight and airtight performance and excellent adhesion, but also has lower cost, and can realize large-scale industrial preparation.

In some embodiments, the plasticizer may include polyisobutylene. In a specific example, the plasticizer may preferably be polyisobutylene having a number average molecular weight of 800 to 1500.

The polyisobutylene has good air tightness, chemical resistance and good compatibility with rubber. The raw material of the butyl pressure-sensitive adhesive contains polyisobutylene, and the ageing resistance, the weather resistance, the bending fracture resistance, the water tightness and the air tightness of the butyl pressure-sensitive adhesive at high temperature can be improved.

In some embodiments, the tackifying resin may be selected from at least one of petroleum resins, hydrogenated petroleum resins, rosin resins, and terpene resins. Preferably, the tackifying resin may be a mixture of terpene resin and petroleum resin. More specifically, in order to further improve the tackifying effect, the tackifying resin may preferably be a mixture of a terpene resin and a petroleum resin at a mass ratio of 1:1 to 1: 2.

In some embodiments, the filler may include kaolin and fumed silica. Preferably, the filler can be a mixture of kaolin and fumed silica in a mass ratio of 1: 1-1: 2.

In some embodiments, the kaolin may be 800-1250 mesh kaolin, and the specific surface area of fumed silica may be not less than 200m²/g。

The kaolin has chemical inertness and ideal fluidity, and can be used as a raw material of the butyl pressure-sensitive adhesive to enable the butyl pressure-sensitive adhesive to have good storage stability and impact resistance.

The fumed silica is one of the most important high-tech superfine inorganic new materials, and has the advantages of small particle size, large specific surface area, strong surface adsorption, large surface energy, high chemical purity and good dispersibility. The fumed silica has unique characteristics in various disciplines and fields due to excellent stability, reinforcing property, thickening property and thixotropy, and has an irreplaceable effect. The fumed silica is used as the raw material of the butyl pressure-sensitive adhesive, so that the strength and toughness of the butyl pressure-sensitive adhesive can be improved, the curing speed can be increased, and the bonding effect can be improved.

The specific surface area of fumed silica in the present application is determined by the gas adsorption method (BET method). The larger the specific surface area of the fumed silica is, the better the dispersibility in rubber processing is, and a certain reinforcing effect can be achieved, and the inventor finds that when the specific surface area of the fumed silica is 200m²When the specific surface area is more than g, the butyl pressure-sensitive adhesive can be obviously modified.

In some embodiments, the antioxidant may be selected from at least one of hindered phenolic antioxidants, phosphite antioxidants, hindered phenols, and phosphite complex antioxidants. Preferably, the above antioxidant may be selected from at least one of a combination of a hindered phenol antioxidant and a phosphite antioxidant, a hindered phenol and a phosphite complex antioxidant.

The hindered phenolic antioxidant and the phosphite oxidant may act synergistically, and it will be readily appreciated that the antioxidant herein may preferably be a combination of a hindered phenolic antioxidant and a phosphite oxidant, or a single hindered phenolic and phosphite complex antioxidant.

In some embodiments, the antioxidant may be selected from at least one of antioxidant 1010, antioxidant 168, antioxidant 1330, antioxidant B225. Preferably, the antioxidant may comprise at least one of antioxidant 1010 or antioxidant 1330 in combination with antioxidant 168, and/or comprises antioxidant B225.

This application second aspect provides a shop's waterproofing membrane in advance, including the antiseized protective layer in surface, self-adhesion layer and main part waterproof material layer, wherein, self-adhesion layer contains the butyl pressure sensitive adhesive according to any embodiment of this application first aspect.

According to the roll of pre-applied waterproofing of the second aspect of the present application, the self-adhesive layer thereof comprises the butyl pressure-sensitive adhesive according to any of the examples of the first aspect of the present application, and thus has excellent oil resistance, air tightness and water tightness.

The material of the surface release protective layer may be a conventional surface release protective layer material, and this is not particularly limited in the present application.

In some embodiments, the surface release protective layer may include at least one of a particle layer and a coating layer. The particle layer may include at least one of machine-made sand, sintered sand, artificially coated colored sand, natural colored sand, ore sand, river sand, cement sintered particles, cement hydrated particles, inorganic or organic particles coated with an artificial, mullite sand, reaction sand, quartz sand, and specifically may be a mullite sand layer. The coating layer may include at least one of an acrylate-based coating or a polyurethane-based coating.

The main waterproof material may be a conventional polymer material, which is not particularly limited in this application.

In some embodiments, the main waterproof material layer may be a polymer sheet layer or a composite layer of a polymer sheet and a mesh cloth. The bulk water repellent material layer may preferably be a synthetic polymer sheet layer.

In some embodiments, the body flashing material may include a combination of one or more of polyethylene, polypropylene, ethylene-olefin copolymer, polyvinyl acetate, polyacrylate, polyethylacrylate, polytetrafluoroethylene, polyvinylidene fluoride, polyethylene terephthalate, polyvinyl chloride, polyamide, polylactic acid, thermoplastic polyurethane elastomer rubber TPU, thermoplastic vulcanizate TPV, high density polyethylene HDPE, thermoplastic polyolefin TPO, ethylene-vinyl acetate copolymer EVA.

In some embodiments, the mesh fabric may be selected from woven mesh fabric or non-woven mesh fabric, preferably, the mesh fabric includes at least one of polyester fiber, glass fiber, carbon fiber, aramid fiber, nylon fiber, polypropylene fiber, and polyimide fiber.

In some embodiments, the main waterproof material layer may be a single-layer structure or a multi-layer structure. When the main waterproof material layer is a multilayer structure, the materials of the layers in the multiple layers constituting the main waterproof material layer may be the same or different.

In some embodiments, the peel strength of the pre-paved waterproof roll and the post-poured concrete after being soaked in oil can be more than or equal to 1.5N/mm;

the method for testing the peeling strength of the pre-paved waterproof roll and the post-poured concrete after being soaked in the oil can comprise the steps of preparing an untreated post-poured concrete test piece, preparing an oil-soaked post-poured concrete test piece and testing the peeling strength of the pre-paved waterproof roll and the post-poured concrete after being soaked in the oil.

The step of preparing the untreated post-cast concrete test piece can comprise the step of preparing the untreated post-cast concrete test piece by using the pre-paved waterproof coiled material according to the method in GB/T23457-2017.

The step of preparing the oil-impregnated post-cast concrete specimen may include immersing the untreated post-cast concrete specimen in 0# diesel for 28 days in a standard laboratory environment to obtain the oil-impregnated post-cast concrete specimen.

The step of testing the peeling strength of the pre-paved waterproof roll and the post-poured concrete after being soaked in the oil can comprise testing the peeling strength of the post-poured concrete test piece soaked in the oil according to the method in GB/T23457-2017, so that the peeling strength of the pre-paved waterproof roll and the post-poured concrete after being soaked in the oil can be obtained.

Examples

The present disclosure is more particularly described in the following examples that are intended as illustrations only, since various modifications and changes within the scope of the present disclosure will be apparent to those skilled in the art. Unless otherwise indicated, all parts, percentages, and ratios reported in the following examples are on a weight basis, and all reagents used in the examples are commercially available or synthesized according to conventional methods and can be used directly without further treatment, and the equipment used in the examples is commercially available.

In each of the following examples and comparative examples, isobutylene-based rubbers, liquid rubbers, plasticizers, tackifier resin fillers, antioxidants, crosslinking agents, crosslinking accelerators, and oil-resistant auxiliaries are commercially available.

Specifically, among isobutylene-based rubbers, butyl rubber may be langerhans chemical 301, bromobutyl rubber may be langerhans chemical 1066, chlorobutyl rubber may be langerhans chemical 1240; the tackifying resin is a mixture of terpene resin and petroleum resin in a mass ratio of 1:1, wherein the terpene resin can be DRT 115, and the petroleum resin can be Islaman C-125; antioxidant 168, antioxidant 1010, antioxidant B225, antioxidant 1330 are all available from BASF SE.

Example 1

The butyl pressure-sensitive adhesive comprises the following components in parts by weight:

30 parts of butyl rubber, 40 parts of brominated butyl rubber, 40 parts of chlorinated butyl rubber, 100 parts of liquid nitrile rubber, 80 parts of liquid chloroprene rubber, 70 parts of polyisobutylene, 80 parts of tackifying resin, 50 parts of kaolin, 50 parts of fumed silica, 1681 part of antioxidant, 2 parts of 2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane, 0.5 part of tetramethyl thiuram disulfide, 0.5 part of N-cyclohexyl-2-benzothiazole sulfonamide and 15 parts of polyester plasticizer.

Placing isobutylene rubber into a heating stirring kettle for mixing and processing, setting the rotating speed to be 50-60 r/min, heating to 150-160 ℃ within 30min, then adding raw material components except the antioxidant, the crosslinking agent, the crosslinking accelerant and the oil-resistant auxiliary agent for multiple times, and carrying out first stirring and mixing. And after uniformly mixing, cooling to 100 ℃, adding an antioxidant, a cross-linking agent, a cross-linking promoter and an oil-resistant auxiliary agent, and carrying out second stirring and mixing until no granular impurities exist, thus obtaining the oil-resistant butyl pressure-sensitive adhesive.

And (3) coating the oil-resistant butyl pressure-sensitive adhesive on the HDPE high-molecular sheet to obtain the pre-paved waterproof coiled material.

Example 2