SBS modified waterproofing membrane cold adhesive and preparation method thereof

Abstract

The present application relates to the technical field of adhesive, especially to the field of IPC C09J7, more particularly to a SBS asphalt modified waterproofing membrane cold adhesive and a preparation method thereof.The SBS asphalt modified waterproofing membrane cold adhesive is prepared from the following raw materials by weight: 30-40 parts of main polymer, 40-50 parts of resin, 30-35 parts of rubber oil, 0.2-1 part of auxiliary agent, and 0.2-1 part of antioxidant.The SBS asphalt modified waterproofing membrane cold adhesive prepared from the specific SIS block copolymer and solution polymerized styrene-butadiene rubber, in combination with the specific hydrogenated C5 resin and DCPD resin, has high adhesion to asphalt base, which can effectively resist cohesive failure caused by asphalt oil seepage during lapping, and can meet the national standard requirements for the peeling strength of the later cast concrete, and can be applied in the fields of paper product processing, box sealing, clothing, leather, medical treatment, and textile, especially in the field of SBS asphalt modified waterproofing membrane.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of adhesives, in particular to the field of IPC C09J7, and more particularly to a SBS asphalt modified waterproofing membrane cold adhesive and a preparation method thereof. BACKGROUND

[0002] At present, waterproofing membranes in China include asphalt-based membranes and polymer membranes. The construction methods of asphalt-based membranes are wet laying, pre-laying, self-adhesion, hot melting, and empty laying. The construction methods of polymer membranes are empty laying, mechanical fixing, and adhesion. The lap joint methods of asphalt-based membranes are self-adhesion and hot melting. The lap joint methods of polymer membranes are hot melting welding and adhesive bonding.

[0003] Polymer membranes have good waterproofing effect but are expensive. Asphalt-based membranes are low in cost but have high energy consumption during construction.

[0004] At present, asphalt-based membranes are modified by SBS to improve waterproofing effect, but hot baking and bonding lap joint methods are used during construction, which have the defects of complicated process steps, high energy consumption, and environmental pollution.

[0005] Conventional polymer membrane special-purpose glue is coated on existing SBS modified asphalt membranes, and oil in the asphalt layer is easily transferred to the glue layer during cold lap joint, which can damage the cohesion of the glue and reduce the peeling force, so that the national standard requirements cannot be met. Although the use of hot melt glue with strong cohesion can effectively solve the damage of the glue layer caused by oil penetration, it cannot achieve better combination with the sand layer and achieve a large peeling force when peeling off the post-poured concrete.

[0006] In the prior art, the patent application file with the application publication number CN107523230A discloses a preparation method of SBS modified asphalt waterproofing membrane, which adds LDHs compound and di-tert-butyl-p-cresol in SBS thermoplastic rubber to improve the anti-aging and anti-ultraviolet functions of the self-adhesive, thereby improving the service life of the waterproofing membrane. However, the improvement of the anti-oil penetration performance and peeling strength is limited.

[0007] The patent application file with the application publication number CN113388336B discloses a TPO thermoplastic polyolefin polymer non-asphalt-based self-adhesive film waterproofing membrane and a preparation method thereof. The prepared hot melt adhesive is applied to the waterproofing membrane, has good bonding strength with post-poured concrete, and has high tensile performance. However, the improvement of the bonding strength between the hot melt adhesive and the SBS asphalt modified waterproofing membrane and the waterproofing and pollution prevention performance is limited. SUMMARY

[0008] In order to solve the above problems, the present application provides a SBS asphalt modified waterproofing membrane cold adhesive, the preparation raw materials include: main polymer 30-40 parts, resin 40-50 parts, rubber oil 30-35 parts, auxiliary agent 0.2-1 part, antioxidant 0.2-1 part, by weight.

[0009] Preferably, the main polymer is one or more of hydrogenated styrene-butadiene-styrene block copolymer, SIS block copolymer, styrene-butadiene block copolymer, SSBR, and thermoplastic elastomer.

[0010] Preferably, the weight ratio of the SIS block copolymer and the SSBR is (3-5):(2-3).

[0011] Preferably, the structure of the SIS block copolymer is any one of star structure, linear structure, and star-linear mixed structure; further preferably, the linear structure.

[0012] Preferably, the SIS block copolymer includes a first SIS block copolymer and a second SIS block copolymer.

[0013] Preferably, the weight ratio of the first SIS block copolymer and the second SIS block copolymer is (15-20):(3-5).

[0014] Preferably, the two-block SI content in the first SIS block copolymer is 30-70wt%, and the viscosity in 25wt% toluene solution at 25℃ is 700-1200mPa·s; further preferably, the two-block SI content in the first SIS block copolymer is 50wt%, and the viscosity in 25wt% toluene solution at 25℃ is 900mPa·s.

[0015] In some preferred embodiments, the first SIS block copolymer is purchased from the supplier Hunan Yuehua Chemical Co., Ltd. and is YH 1126.

[0016] Preferably, the styrene content in the second SIS block copolymer is 20-40wt%, and the melt index at 200℃ is 5-20g / 10min; further preferably, the styrene content in the second SIS block copolymer is 29wt%, and the melt index at 200℃ is 10g / 10min.

[0017] In some preferred embodiments, the second SIS block copolymer is purchased from the supplier Hunan Yuehua Chemical Co., Ltd. and is YH 1209.

[0018] The present application can improve the peel strength of the cold adhesive by selecting a specific SIS block copolymer as the main polymer. This may be due to the synergistic effect between the first SIS block copolymer and the second SIS block copolymer with a weight ratio of (15-20):(3-5), which strengthens the viscosity and toughness of the cold adhesive. The soft and hard segments of the two copolymers can form an elastic network, and the multiple side methyl structures can provide strong bonding strength for the cold adhesive, so that the prepared cold adhesive has high peel strength.

[0019] Preferably, the SSBR has a styrene content of 20-30 wt%, and a raw rubber Mooney viscosity ML100℃1+4 at 100℃ of 30-60; further preferably, the SSBR has a styrene content of 25 wt%, and a raw rubber Mooney viscosity ML100℃1+4 at 100℃ of 40-55.

[0020] In some preferred embodiments, the SSBR is purchased from the supplier Hunan Yueyang Balin Petrochemical Co., Ltd. to produce SSBR 2605.

[0021] In some preferred embodiments, the SSBR with a styrene content of 20-30 wt% and a raw rubber Mooney viscosity ML100℃1+4 at 100℃ of 30-60 is added as one of the main polymer raw materials, and the weight ratio of the SIS block copolymer and the SSBR is (3-5):(2-3), which can further improve the bonding strength of the cold adhesive while reducing the shrinkage rate of the prepared cold adhesive at high temperature, so that it is not easy to deform. This may be due to the synergistic effect between the SIS block copolymer and the SSBR, which not only improves the bonding strength of the cold adhesive, but also improves its high temperature resistance and oil resistance, so that the prepared cold adhesive is very suitable for SBS asphalt modified waterproofing membrane. When applied to SBS asphalt modified waterproofing membrane, it not only does not shrink at high temperature, but also has good stability. When the membrane is immersed in water or mud / concrete, water and mud are not easy to invade the inside of the membrane, thereby increasing the service life of the waterproofing membrane.

[0022] Preferably, the resin is one or more of rosin resin, petroleum resin, terpene resin, and terpene-phenolic resin; further preferably, it is petroleum resin.

[0023] Preferably, the petroleum resin is one or more of aliphatic petroleum resin, aliphatic hydrogenated petroleum resin, alicyclic petroleum resin, alicyclic hydrogenated resin, aromatic petroleum resin, and aromatic hydrogenated petroleum resin; further preferably, it is aliphatic hydrogenated petroleum resin (hydrogenated C5 resin) and alicyclic petroleum resin (DCPD resin).

[0024] Preferably, the weight ratio of the hydrogenated C5 resin and the DCPD resin is (1-3):(5-6).

[0025] Preferably, the softening point of the hydrogenated C5 resin is 90-105°C; further preferably, 95-104.9°C.

[0026] In some preferred embodiments, the hydrogenated C5 resin is purchased from Henghe Company, H5-1001.

[0027] Preferably, the softening point of the DCPD resin is 100-120°C, and the bromine value is 140-180 gBr / 100g; further preferably, the softening point of the DCPD resin is 110°C, and the bromine value is 160 gBr / 100g.

[0028] In some preferred embodiments, the DCPD resin is purchased from Putian Hengtai Petroleum Chemical Co., Ltd., DCPD resin, grade Pht ⊙ -D1110.

[0029] The applicants surprisingly found that when a specific hydrogenated C5 resin and DCPD resin are selected as the resin raw material, and the weight ratio of the hydrogenated C5 resin and the DCPD resin is (1-3):(5-6), the stability and peel strength of the hot melt adhesive can be improved. This may be due to the good compatibility between the specific two petroleum resins in the application and the main polymer, thereby improving the wettability of the cold adhesive to the substrate, especially the SBS asphalt modified waterproofing membrane, so that the two can fully contact to improve the peel strength, and the petroleum resin in the application has a high softening point, and the high softening point also makes it exist in the system in the form of aggregation, improves the cohesion, so that the cold adhesive prepared can effectively resist the cohesion damage caused by the oil bleeding of asphalt, and ensures the peel strength during use. In addition, the color of the hydrogenated C5 resin is lighter and has high stability, thereby improving the high-temperature stability of the cold adhesive.

[0030] Preferably, the rubber oil is one or both of naphthenic oil and white mineral oil; further preferably, naphthenic oil.

[0031] Preferably, the kinematic viscosity of the naphthenic oil at 100°C is 5-15 mm 2 / s; further preferably, 10.4 mm 2 / s.

[0032] In some preferred embodiments, the naphthenic oil is purchased from Zibo Xingjiu Rubber Auxiliary Co., Ltd., N4010.

[0033] Preferably, the auxiliary agent includes ultraviolet absorber, anti-yellowing agent, adhesion promoter.

[0034] Preferably, the weight ratio of the ultraviolet absorber, the anti-yellowing agent, and the adhesion promoter is (1-2) : (1-2) : (1-2).

[0035] Preferably, the ultraviolet absorber is one or more of benzophenone ultraviolet absorbers, salicylate ultraviolet absorbers, benzotriazole ultraviolet absorbers, substituted acrylonitrile ultraviolet absorbers, and triazine ultraviolet absorbers; further preferably, the benzotriazole ultraviolet absorber.

[0036] Preferably, the main component of the benzotriazole ultraviolet absorber is one or more of 2-(2'-hydroxy-5'-methylphenyl) benzotriazole, 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)-5-chlorobenzotriazole, 2-(2'-hydroxy-3',5'-di-tert-amylphenyl) benzotriazole, and 2-(2'-hydroxy-3',5'-di-tert-amylphenyl) benzotriazole; further preferably, the main component of the benzotriazole ultraviolet absorber is 2-(2'-hydroxy-5'-methylphenyl) benzotriazole.

[0037] In some preferred embodiments, the benzotriazole ultraviolet absorber is purchased from Tianjin Li'anlong New Material Co., Ltd. UV-P.

[0038] Preferably, the anti-yellowing agent has a particle size of 1-10 μm and a melting point of 90-120 °C; further preferably, the anti-yellowing agent has a particle size of 2-5 μm and a melting point of 100-110 °C.

[0039] In some preferred embodiments, the anti-yellowing agent is purchased from Shenzhen Heyuanyuese Plastic Pigment Additives Co., Ltd.

[0040] Preferably, the adhesion promoter is an epoxy-modified organosilicon compound.

[0041] Preferably, the epoxy-modified organosilicon compound has a viscosity of ≤20 cps and a purity of ≥95% at 25 °C; further preferably, the epoxy-modified organosilicon compound has a viscosity of ≤10 cps and a purity of ≥98% at 25 °C.

[0042] In some preferred embodiments, the epoxy-modified organosilicon compound is purchased from Hangzhou Jessica Chemical Co., Ltd.

[0043] Preferably, the antioxidant is one or more of antioxidant 1010, antioxidant 168, antioxidant 1076, antioxidant 636, antioxidant 3114, antioxidant 330, antioxidant 626, antioxidant 686; further preferably, antioxidant 1010 and antioxidant 168.

[0044] Preferably, the weight ratio of antioxidant 1010 and antioxidant 168 is (1-3):1; further preferably, 2:1.

[0045] In some preferred embodiments, the antioxidant 1010 is purchased from the supplier BASF Corporation of the United States.

[0046] In some preferred embodiments, the antioxidant 168 is purchased from the supplier BASF Corporation of the United States.

[0047] The second aspect of the present application provides a preparation method of the SBS asphalt modified waterproofing membrane cold adhesive, comprising the following steps:

[0048] S1, after mixing the rubber oil and the main polymer, heating to 120-130℃ and stirring to completely dissolve the main polymer;

[0049] S2, adding resin to the substance obtained in step S1, heating to 135-140℃ and mixing and stirring with a spiral shear machine;

[0050] S3, adding additives and antioxidants to the substance obtained in step S2 and stirring uniformly at 135-140℃ to obtain the SBS asphalt modified waterproofing membrane cold adhesive.

[0051] Beneficial effects:

[0052] 1. By selecting a specific SIS block copolymer as the main polymer, the peel strength of the cold adhesive can be improved.

[0053] 2. By adding SSBR with a styrene content of 20-30wt%, a raw rubber Mooney viscosity ML100℃1+4 of 30-60 at 100℃ as one of the main polymer raw materials, and the weight ratio of the SIS block copolymer and the SSBR being (3-5):(2-3), the cold adhesive can be further improved in bonding strength, while the shrinkage of the prepared cold adhesive at high temperature can be reduced, so that it is not easy to deform.

[0054] 3. By selecting specific hydrogenated C5 resin and DCPD resin as the resin raw material, and the weight ratio of the hydrogenated C5 resin and the DCPD resin being (1-3):(5-6), the stability and peel strength of the hot melt adhesive can be improved.

[0055] 4、The SBS asphalt modified waterproof coiled material cold adhesive prepared by using the specific SIS block copolymer and the solution polymerized styrene-butadiene rubber, the specific hydrogenated C5 resin and the DCPD resin in the rubber oil has high adhesion to the asphalt base, on the one hand, the cold adhesive can effectively resist the cohesive failure caused by the penetration of the asphalt oil, on the other hand, the peeling strength of the later poured concrete can meet the requirement of the national standard, and can be applied to the paper product processing, box sealing, clothing, leather, medical treatment, textile and other fields, and is especially suitable for the SBS asphalt modified waterproof coiled material. DETAILED DESCRIPTION

[0056] EMBODIMENT

[0057] EMBODIMENT 1

[0058] Embodiment 1 provides a SBS asphalt modified waterproof coiled material cold adhesive, and the preparation raw materials include, by weight parts, main polymer 35 parts, resin 45 parts, rubber oil 33 parts, auxiliary 0.5 parts, antioxidant 0.5 parts.

[0059] The main polymer is SIS block copolymer and SSBR.

[0060] The weight ratio of the SIS block copolymer and the SSBR is 8:5.

[0061] The structure of the SIS block copolymer is linear structure.

[0062] The SIS block copolymer includes a first SIS block copolymer and a second SIS block copolymer.

[0063] The weight ratio of the first SIS block copolymer and the second SIS block copolymer is 4:1.

[0064] The content of the two blocks SI in the first SIS block copolymer is 50wt%, and the viscosity in a 25wt% toluene solution at 25℃ is 900mPa·s.

[0065] The first SIS block copolymer is purchased from the supplier Hunan Yuehua Chemical Co., Ltd. and is YH1126.

[0066] The content of styrene in the second SIS block copolymer is 29wt%, and the melt index at 200℃ is 10g / 10min.

[0067] The second SIS block copolymer is purchased from the supplier Hunan Yuehua Chemical Co., Ltd. and is YH1209.

[0068] The content of styrene in the SSBR is 25wt%, and the raw rubber Mooney viscosity ML100℃1+4 at 100℃ is 40-55.

[0069] The SSBR is purchased from the supplier Hunan Yueyang Balin Petrochemical Co., Ltd. to produce SSBR 2605.

[0070] The resin is petroleum resin.

[0071] The petroleum resin is hydrogenated C5 resin and DCPD resin.

[0072] The weight ratio of the hydrogenated C5 resin and the DCPD resin is 4:11.

[0073] The softening point of the hydrogenated C5 resin is 95-104.9℃.

[0074] The hydrogenated C5 resin is purchased from the supplier Hejiang Company to produce H5-1001.

[0075] The softening point of the DCPD resin is 110℃, and the bromine value is 160gBr / 100g.

[0076] The DCPD resin is purchased from the supplier Puyang Hengtai Petroleum Chemical Co., Ltd. to produce DCPD resin, brand Pht ⊙ -D1110.

[0077] The rubber oil is naphthenic oil.

[0078] The kinematic viscosity of the naphthenic oil at 100℃ is 10.4mm 2 / s.

[0079] The naphthenic oil is purchased from the supplier Zibo Xinjiu Rubber Auxiliary Co., Ltd. to produce N4010.

[0080] The auxiliary includes ultraviolet absorber, anti-yellowing agent, adhesion promoter.

[0081] The weight ratio of the ultraviolet absorber, anti-yellowing agent, and adhesion promoter is 1:1:1.

[0082] The ultraviolet absorber is benzotriazole ultraviolet absorber.

[0083] The main component of the benzotriazole ultraviolet absorber is 2-(2'-hydroxy-5'-methylphenyl) benzotriazole.

[0084] The benzotriazole ultraviolet absorber is purchased from the supplier Tianjin Li'anlong New Material Co., Ltd. to produce light stabilizer UV-P.

[0085] The particle size of the anti-yellowing agent is 2-5μm, and the melting point is 100-110℃.

[0086] The anti-yellowing agent is purchased from a supplier, Shenzhen Heye Plastic Pigment Additives Co., Ltd., and is a general-purpose plastic anti-yellowing agent.

[0087] The adhesion promoter is an epoxy-modified organosilicon compound.

[0088] The epoxy-modified organosilicon compound has a viscosity of ≤10 cps at 25°C and a purity of ≥98%.

[0089] The epoxy-modified organosilicon compound is purchased from a supplier, Hangzhou Jessica Chemical Co., Ltd., and is epoxy-modified organosilicon compound JSC-1180.

[0090] The antioxidants are antioxidant 1010 and antioxidant 168.

[0091] The weight ratio of the antioxidant 1010 and the antioxidant 168 is 2:1.

[0092] The antioxidant 1010 is purchased from a supplier, BASF Corporation, and is antioxidant 1010.

[0093] The antioxidant 168 is purchased from a supplier, BASF Corporation, and is antioxidant 168.

[0094] The second aspect of the present application provides a preparation method of the SBS asphalt modified waterproofing membrane cold adhesive, comprising the following steps:

[0095] S1, after mixing the rubber oil and the main polymer, heating to 125°C and stirring to completely dissolve the main polymer;

[0096] S2, adding resin to the substance obtained in step S1, heating to 138°C and mixing and stirring using a spiral shear machine;

[0097] S3, adding the auxiliary agent and the antioxidant to the substance obtained in step S2 and stirring uniformly at 138°C to obtain the SBS asphalt modified waterproofing membrane cold adhesive.

[0098] Example 2

[0099] Example 2 provides an SBS asphalt modified waterproofing membrane cold adhesive, and the specific implementation method is the same as that of Example 1, except that the main polymer is 30 parts, the resin is 40 parts, the rubber oil is 30 parts, the auxiliary agent is 0.2 parts, and the antioxidant is 0.2 parts.

[0100] The weight ratio of the SIS block copolymer and the SSBR is 1:1.

[0101] The weight ratio of the first SIS block copolymer and the second SIS block copolymer is 3:1.

[0102] The weight ratio of the hydrogenated C5 resin and the DCPD resin is 1:6.

[0103] The weight ratio of the ultraviolet absorber, the anti-yellowing agent, and the adhesion promoter is 1:2:2.

[0104] The weight ratio of the antioxidant 1010 and the antioxidant 168 is 1:1.

[0105] The second aspect of the present application provides a preparation method of the SBS asphalt modified waterproofing membrane cold adhesive, comprising the following steps:

[0106] S1, mixing rubber oil and main polymer, heating to 120℃ and stirring to completely dissolve the main polymer;

[0107] S2, adding resin to the substance obtained in step S1, heating to 135℃ and mixing and stirring by using a spiral shear machine;

[0108] S3, adding auxiliary agent and antioxidant to the substance obtained in step S2 and stirring uniformly at 135℃, to obtain the SBS asphalt modified waterproofing membrane cold adhesive.

[0109] Example 3

[0110] Example 3 provides an SBS asphalt modified waterproofing membrane cold adhesive, and the specific embodiment is the same as that in Example 1, and the difference lies in that the main polymer is 40 parts, the resin is 50 parts, the rubber oil is 35 parts, the auxiliary agent is 1 part, and the antioxidant is 1 part.

[0111] The weight ratio of the SIS block copolymer and the SSBR is 5:2.

[0112] The weight ratio of the first SIS block copolymer and the second SIS block copolymer is 20:3.

[0113] The weight ratio of the hydrogenated C5 resin and the DCPD resin is 3:5.

[0114] The weight ratio of the ultraviolet absorber, the anti-yellowing agent, and the adhesion promoter is 2:1:1.

[0115] The weight ratio of the antioxidant 1010 and the antioxidant 168 is 3:1.

[0116] The antioxidant 1010 is purchased from the supplier BASF Company of the United States.

[0117] The antioxidant 168 is purchased from the supplier BASF Company of the United States.

[0118] The second aspect of the present application provides a preparation method of the SBS asphalt modified waterproofing membrane cold adhesive, comprising the following steps:

[0119] S1, after mixing the rubber oil and the main polymer, heat to 130°C and stir to completely dissolve the main polymer;

[0120] S2, add resin to the material obtained in step S1, heat to 140°C and mix and stir using a helical shear machine;

[0121] S3, add the auxiliary agent and the antioxidant to the material obtained in step S2 and stir uniformly at 140°C to obtain the SBS asphalt modified waterproofing membrane cold adhesive.

[0122] Comparative Example 1

[0123] Comparative Example 1 provides an SBS asphalt modified waterproofing membrane cold adhesive, and the specific implementation is the same as that of Example 1, except that the weight ratio of the SIS block copolymer and the SSBR is 1:2.

[0124] Comparative Example 2

[0125] Comparative Example 2 provides an SBS asphalt modified waterproofing membrane cold adhesive, and the specific implementation is the same as that of Example 1, except that the weight ratio of the first SIS block copolymer and the second SIS block copolymer is 2:1.

[0126] Comparative Example 3

[0127] Comparative Example 3 provides an SBS asphalt modified waterproofing membrane cold adhesive, and the specific implementation is the same as that of Example 1, except that the weight ratio of the hydrogenated C5 resin and the DCPD resin is 1:1.

[0128] Performance Test Method

[0129] The SBS asphalt modified waterproofing membrane cold adhesives prepared in Examples 1-3 and Comparative Examples 1-3 are coated between two pieces of SBS asphalt modified waterproofing membrane according to the test method for P-type waterproofing membrane in GB / T 23457-2017, to obtain a composite waterproofing membrane, the coating amount is 40 gsm, and the peel strength between the composite waterproofing membrane and the post-cast concrete under no treatment, water immersion treatment, silt contaminated surface, ultraviolet treatment, and heat treatment conditions, as well as the peel strength between the membranes (lap joint edge) after no treatment and water immersion treatment, is tested after 24 hours. The results are recorded in Table 1.

[0130] Table 1

[0131]

Claims

1. A SBS bitumen modified waterproofing membrane cold adhesive characterized in that, The raw materials for preparing the product by weight parts include: 30-40 parts of main polymer, 40-50 parts of resin, 30-35 parts of rubber oil, 0.2-1 part of auxiliary agent, and 0.2-1 part of antioxidant; The main polymer is SIS block copolymer and SSBR, and the weight ratio of the SIS block copolymer to the SSBR is (3-5):(2-3); The SIS block copolymer includes a first SIS block copolymer and a second SIS block copolymer, and the weight ratio of the first SIS block copolymer to the second SIS block copolymer is (15-20):(3-5); The content of two blocks SI in the first SIS block copolymer is 30-70wt%, and the viscosity in 25wt% toluene solution at 25℃ is 700-1200 mPa·s; the content of styrene in the second SIS block copolymer is 20-40wt%, and the melt index at 200℃ is 5-20 g / 10 min; The content of styrene in the SSBR is 20-30wt%, and the raw rubber gateoni viscosity ML100℃1+4 at 100℃ is 30-60; The resin is hydrogenated C5 resin and DCPD resin, and the weight ratio of the hydrogenated C5 resin to the DCPD resin is (1-3):(5-6).

2. The SBS asphalt modified waterproofing membrane cold adhesive according to claim 1, characterized in that, The structure of the SIS block copolymer is any one of star structure, linear structure, and star-linear mixed structure.

3. The SBS modified asphalt waterproofing membrane cold adhesive according to any one of claims 1-2, characterized in that, The rubber oil is one or both of naphthenic oil and white mineral oil.

4. The preparation method of the SBS asphalt modified waterproofing membrane cold adhesive glue according to any one of claims 1-3, characterized in that, The method includes the following steps: S1, mixing the rubber oil and the main polymer, heating to 120-130℃ and stirring to completely dissolve the main polymer; S2, adding the resin to the substance obtained in step S1, heating to 135-140℃, and mixing and stirring by using a spiral shear machine; S3, adding the auxiliary agent and the antioxidant to the substance obtained in step S2, and stirring uniformly at 135-140℃ to obtain the SBS asphalt modified waterproofing membrane cold adhesive.

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