CN113637438A - Hot-melt pressure-sensitive adhesive composition and application thereof, hot-melt pressure-sensitive adhesive and preparation method and application thereof - Google Patents
Hot-melt pressure-sensitive adhesive composition and application thereof, hot-melt pressure-sensitive adhesive and preparation method and application thereof Download PDFInfo
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J157/00—Adhesives based on unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09J157/02—Copolymers of mineral oil hydrocarbons
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/241—Polyolefin, e.g.rubber
- C09J7/243—Ethylene or propylene polymers
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/387—Block-copolymers
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- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/346—Applications of adhesives in processes or use of adhesives in the form of films or foils for building applications e.g. wrap foil
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/304—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being heat-activatable, i.e. not tacky at temperatures inferior to 30°C
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- C09J2423/00—Presence of polyolefin
- C09J2423/04—Presence of homo or copolymers of ethene
- C09J2423/046—Presence of homo or copolymers of ethene in the substrate
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Abstract
The invention relates to the technical field of adhesives, and discloses a hot-melt pressure-sensitive adhesive composition and application thereof, a hot-melt pressure-sensitive adhesive and a preparation method and application thereof. The composition contains the following components which are stored in a mixing way or independently: SIS combination, tackifying resin, plasticizer, anti-aging auxiliary agent and silane coupling agent; the SIS composition contains the following components in percentage by weight: 0.4 to 2.5 SIS thermoplastic elastomer and epoxy SIS graft copolymer. The hot-melt pressure-sensitive adhesive composition formed by the invention can be used for preparing the hot-melt pressure-sensitive adhesive with good bonding strength.
Description
Technical Field
The invention relates to the technical field of adhesives, in particular to a hot-melt pressure-sensitive adhesive composition and application thereof, a hot-melt pressure-sensitive adhesive and a preparation method and application thereof.
Background
The Thermoplastic elastomer (TPE) pressure-sensitive adhesive is prepared from Thermoplastic elastomer rubber, tackifying resin, an anti-aging additive and other raw materials, wherein the Thermoplastic elastomer rubber is a material with the characteristics of both rubber and Thermoplastic plastics and has the toughness and elasticity of the rubber at room temperature.
Currently, thermoplastic elastomers are based on styrene-butadiene-styrene (SBS) block copolymers and styrene-isoprene-styrene (SIS) block copolymers. Compared with SBS block copolymer, SIS block copolymer has smaller modulus and melt viscosity, has good processing property, and can provide good wetting property and adhesive capacity for hot melt pressure sensitive adhesive, therefore, SIS block copolymer becomes thermoplastic elastomer commonly used for hot melt pressure sensitive adhesive.
However, the solubility of the SIS block copolymer with the tackifying resin is limited, affecting the adhesive strength of the hot melt pressure sensitive adhesive. At present, the adhesive strength of the hot melt pressure sensitive adhesive is generally improved by increasing the amount of the resin, but when the amount of the resin is increased to a certain amount, the adhesive strength of the hot melt pressure sensitive adhesive is not increased or is reduced, and the cost is increased.
Therefore, the development of the hot-melt pressure-sensitive adhesive which has low cost and high bonding strength and is used for coiled materials or post-cast concrete has important significance for the building industry.
Disclosure of Invention
The invention aims to overcome the defect of poor bonding strength of the hot-melt pressure-sensitive adhesive used for coiled materials and post-cast concrete in the prior art.
The inventor finds that the content weight ratio of 1: 0.4-2.5 of SIS thermoplastic elastomer and epoxy SIS graft copolymer are applied to the hot melt pressure sensitive adhesive composition, and are compounded with a specific amount of tackifying resin, plasticizer, anti-aging auxiliary agent and silane coupling agent to prepare the hot melt pressure sensitive adhesive, so that the compatibility of the SIS thermoplastic elastomer and the tackifying resin in a system can be improved, the using amount of the SIS thermoplastic elastomer and the tackifying resin can be reduced, and the bonding strength of the hot melt pressure sensitive adhesive is improved, thereby completing the scheme of the invention.
Accordingly, in order to achieve the above object, the present invention provides in a first aspect a hot melt pressure sensitive adhesive composition comprising two or more of the following components stored in admixture or separately:
SIS combination, tackifying resin, plasticizer, anti-aging auxiliary agent and silane coupling agent;
based on the total weight of the composition, the composition contains 18-35 wt% of SIS combination, 38-48 wt% of tackifying resin, 25-35 wt% of plasticizer, 0.5-1.5 wt% of anti-aging auxiliary agent and 0.5-1.5 wt% of silane coupling agent;
the SIS composition contains the following components in percentage by weight: 0.4 to 2.5 SIS thermoplastic elastomer and epoxy SIS graft copolymer.
In a second aspect, the present invention provides the use of the hot melt pressure sensitive adhesive composition of the first aspect in a hot melt pressure sensitive adhesive.
In a third aspect, the present invention provides a process for preparing a hot melt pressure sensitive adhesive, the process comprising the steps of: mixing the components of the hot melt pressure sensitive adhesive composition of the first aspect.
In a fourth aspect, the invention provides a hot melt pressure sensitive adhesive prepared by the method of the third aspect.
The fifth aspect of the invention provides a use of the fourth aspect in a waterproofing membrane.
The hot-melt pressure-sensitive adhesive composition formed by the invention can be used for preparing the hot-melt pressure-sensitive adhesive with good bonding strength.
Detailed Description
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
As described above, the first aspect of the present invention provides a hot melt pressure sensitive adhesive composition, which contains two or more of the following components stored in admixture or separately:
SIS combination, tackifying resin, plasticizer, anti-aging auxiliary agent and silane coupling agent;
based on the total weight of the composition, the composition contains 18-35 wt% of SIS combination, 38-48 wt% of tackifying resin, 25-35 wt% of plasticizer, 0.5-1.5 wt% of anti-aging auxiliary agent and 0.5-1.5 wt% of silane coupling agent;
the SIS composition contains the following components in percentage by weight: 0.4 to 2.5 SIS thermoplastic elastomer and epoxy SIS graft copolymer.
Preferably, the SIS composition contains the following components in a content weight ratio of 1: 0.4 to 1.5 SIS thermoplastic elastomer and epoxy SIS graft copolymer. The inventors have found that the hot melt pressure sensitive adhesive obtained in this preferred case has better adhesive strength when used for coil-to-coil, coil-to-post-cast concrete.
Preferably, the number average molecular weight of the SIS thermoplastic elastomer is 15X 104-30×104And in the SIS thermoplastic elastomer, the content mass ratio of the polyisoprene block to the polystyrene block is 1: 3-8.
According to a particularly preferred embodiment, the SIS thermoplastic elastomer is SIS thermoplastic elastomer 1126 of the petrochemical company tomayne, santa, and the epoxy SIS graft copolymer is an epoxy SIS graft polybutadiene.
Preferably, the epoxy SIS grafted polybutadiene is obtained by a preparation method comprising the following steps:
(I) mixing and dissolving an SIS block copolymer in toluene to obtain an SIS solution with the concentration of 5-10 wt%, and carrying out a first contact reaction on the SIS solution, formic acid and hydrogen peroxide to obtain epoxy SIS; and the number of the first and second groups,
carrying out second contact reaction on butadiene and n-butyllithium in the presence of a solvent to obtain polybutadiene lithium;
(II) subjecting the epoxy SIS to a third contact reaction with the lithium polybutadiene, and removing the lithium polybutadiene from the product of the third contact reaction.
The inventor finds that epoxy SIS grafted polybutadiene with more excellent performance can be obtained by adopting the embodiment in the preferable condition, and the hot melt pressure sensitive adhesive with better bonding strength can be prepared by compounding the epoxy SIS grafted polybutadiene prepared in the preferable condition with an SIS thermoplastic elastomer, a tackifying resin, a plasticizer, an anti-aging auxiliary agent and a silane coupling agent.
Preferably, in step (I), the conditions of the first contact reaction include at least: the temperature is 0-2 deg.C, the stirring speed is 5-7rpm, and the time is 20-30 min.
Preferably, in step (I), the SIS block copolymer, the toluene, the formic acid and the hydrogen peroxide are used in a weight ratio of 1:8 to 10: 0.3-0.5: 1-1.5.
Preferably, in the step (I), the solvent, the butadiene and the n-butyl lithium are used in a weight ratio of 1: 0.1-0.2: 0.1-0.2.
Preferably, in step (I), the solvent is cyclohexane.
Preferably, in step (I), the conditions of the second contact reaction include at least: the temperature is 40-50 ℃ and the time is 2-4 h.
Preferably, in step (II), the weight ratio of the epoxy SIS to the polybutadiene is 1: 0.04-0.2.
Preferably, in step (II), the conditions of the third contact reaction include at least: the temperature is 40-50 ℃ and the time is 4-6 h.
Preferably, in step (II), the removing of polybutadiene branches from the product of the third contact reaction comprises: and in the presence of tetrahydrofuran, contacting the product of the third contact reaction with ethanol to obtain a mixed solution, standing for layering, taking the lower-layer solution, and repeating the operation for 2-4 times.
Preferably, the plasticizer is a mixture of 1: 2-5 naphthenic oil and polyisobutylene. The inventors found that in this preferable case, a hot melt pressure sensitive adhesive with higher adhesive strength can be obtained.
Preferably, the weight average molecular weight of the polyisobutylene is 900-1500.
Preferably, the tackifying resin is selected from at least one of C5 hydrogenated resin, C9 resin, rosin resin and terpene resin.
Preferably, the anti-aging auxiliary agent is at least one selected from pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], tris [2, 4-di-tert-butylphenyl ] phosphite, n-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, 2,4, 6-tri-tert-butylphenol and bis-2, 2,6, 6-tetramethylpiperidinol sebacate.
Preferably, the silane coupling agent is selected from at least one of gamma-glycidoxypropyltrimethoxysilane, gamma-mercaptopropyltriethoxysilane, and gamma-aminopropyltriethoxysilane.
As previously mentioned, a second aspect of the present invention provides the use of the hot melt pressure sensitive adhesive composition of the first aspect in a hot melt pressure sensitive adhesive.
As previously mentioned, a third aspect of the present invention provides a method of preparing a hot melt pressure sensitive adhesive, the method comprising the steps of: the components of the hot melt pressure sensitive adhesive composition of the first aspect are mixed in contact.
Preferably, the operation of contact mixing the components in the hot melt pressure sensitive adhesive composition comprises the following steps:
(1) first mixing the SIS combination with the plasticizer to obtain a first mixture;
(2) carrying out second mixing on the first mixture and the tackifying resin to obtain a second mixture;
(3) and thirdly mixing the second mixture, the anti-aging auxiliary agent and the silane coupling agent.
The amount of each component related to the third aspect of the present invention is the same as the content of the corresponding component described in the first aspect of the present invention, and therefore, the description thereof is omitted, and the person skilled in the art should not be construed as limiting the present invention.
Preferably, in step (1), the conditions of the first mixing include at least: the temperature is 160 ℃ and 180 ℃, the stirring speed is 8-12rpm, and the stirring time is 30-50 min.
Preferably, in step (2), the conditions of the second mixing include at least: the temperature is 160 ℃ and 180 ℃, the stirring speed is 10-15rpm, and the stirring time is 60-80 min.
Preferably, in step (3), the conditions of the third mixing include at least: the temperature is 160 ℃ and 180 ℃, the stirring speed is 10-15rpm, and the stirring time is 30-45 min.
The method provided by the invention is simple in process, and the hot-melt pressure-sensitive adhesive with good bonding strength can be prepared.
As previously mentioned, a fourth aspect of the present invention provides a hot melt pressure sensitive adhesive prepared by the method of the third aspect.
As previously mentioned, a fifth aspect of the present invention provides a use of the fourth aspect in a waterproofing membrane.
The present invention will be described in detail below by way of examples. In the following examples, various raw materials used are commercially available ones unless otherwise specified.
Epoxy SIS graft copolymer: adding 30g of SIS block copolymer and 270g of toluene into a 500ml three-neck flask to form a solution with the mass fraction of 10%, adding 14.4g of anhydrous formic acid, stirring at 7rpm for 30min, dropwise adding 35.5g of hydrogen peroxide with the mass fraction of 30% by using a dropping funnel, and obtaining epoxy SIS after 30min of dropwise addition is finished;
introducing 180g of cyclohexane and 20g of butadiene monomer into a polymerization bottle to prepare a solution with the mass fraction of 10%, then injecting 20g of n-butyllithium into the polymerization bottle, and carrying out water bath reaction for 3.5h at 50 ℃ to obtain polybutadiene lithium with the weight-average molecular weight of 3000;
introducing 20g of the obtained epoxy SIS into a polymerization bottle containing 2g of polybutadiene, reacting for 5 hours under the condition of 50 ℃ water bath, adding excessive tetrahydrofuran until the epoxy SIS is completely dissolved to form a clear solution, then adding ethanol with the volume concentration of 95% until the solution becomes turbid, placing the solution into a refrigerator for refrigeration treatment until the solution is layered under the condition of 50 ℃ water bath until the solution becomes clear, taking the underlying liquid, and repeating for many times until polybutadiene branched chains are completely removed to obtain the epoxy SIS graft copolymer;
SIS thermoplastic elastomer: the trade name is 1126, purchased from petrochemical company Yueyangba Ling, Hunan;
SIS thermoplastic elastomer: the trade name is 4016, purchased from petrochemical company Yueyangba Ling, Hunan;
SIS thermoplastic elastomer: 1170 tradename, available from Shandong Jusheng science and technology, Inc.;
SBS thermoplastic elastomer: the trade name is 796, purchased from petrochemical company Yueyangba Ling, Hunan;
tackifying resin: c5 hydrogenated resin, brand H2120, available from puyang, science, ltd;
plasticizer: naphthenic oil, grade KN4006, available from crambe corporation;
plasticizer: polyisobutylene, weight average molecular weight 950, brand PB950, available from da lin, korea;
anti-aging auxiliary agent: tris [ 2.4-di-tert-butylphenyl ] phosphite, brand 168, available from basf, germany;
silane coupling agent: gamma-glycidoxypropyltrimethoxysilane, KH560, brand Z-6040, available from Dow Corning, USA;
a planetary stirrer: model number TX-J-2, available from Taiyai industries, Inc.
Example 1
This example illustrates the preparation of hot melt pressure sensitive adhesive according to the formulation and process parameters of Table 1 and as described below.
The method for preparing the hot-melt pressure-sensitive adhesive comprises the following steps:
(1) adding the SIS combination and the plasticizer into a planetary stirrer at 160 ℃, and extracting vacuum (the vacuum degree is-0.09 MPa), the stirring speed is 9rpm, and the time is 40min to obtain a first mixture;
(2) adding tackifying resin into the first mixture at 160 ℃, and stirring at 11rpm for 60min to obtain a second mixture;
(3) and adding the anti-aging auxiliary agent and the silane coupling agent into the second mixture at 160 ℃, and stirring at 11rpm for 40min to obtain the hot-melt pressure-sensitive adhesive S1.
Examples 2-3 were carried out using the same procedure as in example 1, except that the hot melt pressure sensitive adhesive and the process parameters were different, without specific reference to table 1.
Example 4
This example prepared a hot melt pressure sensitive adhesive according to the method of example 1, except that in step (1), the SIS combination contained 12.5g of SIS thermoplastic elastomer and 12.5g of epoxy SIS graft copolymer, i.e., the SIS combination contained SIS thermoplastic elastomer and epoxy SIS graft copolymer in an amount by weight ratio of 1: 1.
The rest of the procedure was the same as in example 1. The hot melt pressure sensitive adhesive S4 was obtained.
Example 5
This example prepared a hot melt pressure sensitive adhesive according to the method of example 1, except that in step (1), the plasticizer was a combination of 15g of naphthenic oil and 15g of polyisobutylene, i.e., the plasticizer was a combination of naphthenic oil and polyisobutylene in an amount by weight ratio of 1: 1.
The rest of the procedure was the same as in example 1. The hot melt pressure sensitive adhesive S5 was obtained.
Example 6
This example prepared a hot melt pressure sensitive adhesive according to the method of example 1, except that in step (1), the plasticizer was a combination of 3.75g of naphthenic oil and 26.25g of polyisobutylene, i.e., the plasticizer was a combination of naphthenic oil and polyisobutylene in an amount by weight ratio of 1: 7.
The rest of the procedure was the same as in example 1. The hot melt pressure sensitive adhesive S6 was obtained.
Comparative example 1
This comparative example a hot melt pressure sensitive adhesive was prepared according to the method of example 1, except that the epoxy SIS graft copolymer was not added to the hot melt pressure sensitive adhesive formulation.
The rest of the procedure was the same as in example 1. The hot melt pressure sensitive adhesive DS1 was obtained.
Comparative example 2
This comparative example a hot melt pressure sensitive adhesive was prepared according to the method of example 1 except that an equal mass of SBS thermoplastic elastomer was used in place of the epoxy SIS graft copolymer in the hot melt pressure sensitive formulation.
The rest of the procedure was the same as in example 1. The hot melt pressure sensitive adhesive DS2 was obtained.
Comparative example 3
This comparative example a hot melt pressure sensitive adhesive was prepared according to the method of example 1, except that in step (1) the SIS combination contained 20g of SIS thermoplastic elastomer and 5g of epoxy SIS graft copolymer, i.e., the SIS combination contained SIS thermoplastic elastomer and epoxy SIS graft copolymer in an amount of 1:0.25 by weight.
The rest of the procedure was the same as in example 1. The hot melt pressure sensitive adhesive DS3 was obtained.
TABLE 1
Table 1 (continuation watch)
Test example
The hot-melt pressure-sensitive adhesives prepared in the examples and the comparative examples are applied to form a high-density polyethylene (HDPE) pre-paved waterproof coiled material, and the peel strength between the formed HDPE pre-paved waterproof coiled material and the peel strength between the HDPE pre-paved waterproof coiled material and post-poured concrete are respectively tested according to the national standard GB/T23457-2017.
The preparation method of the HDPE pre-paved waterproof roll comprises the following steps: melting the hot melt pressure sensitive adhesive prepared in the examples or the comparative examples at 160 ℃, ensuring that the temperature of the hot melt adhesive is 135 ℃ when the hot melt adhesive is extruded by a die head, coating the hot melt adhesive on an HDPE substrate layer at a coating speed of 8m/min to form a pressure sensitive adhesive layer of 0.25mm, cooling to room temperature, and then scattering sand on the surface of the adhesive layer, wherein the scattering sand amount is 500g/m2And forming a 0.4mm isolating layer.
TABLE 2
| Coil to coil peel strength, N/mm | Peel strength of coil to post-cast strip, N/mm | |
| Example 1 | 1.74 | 2.97 |
| Example 2 | 1.51 | 2.67 |
| Example 3 | 1.68 | 2.85 |
| Example 4 | 1.70 | 2.91 |
| Example 5 | 1.69 | 2.87 |
| Example 6 | 1.71 | 2.96 |
| Comparative example 1 | 1.21 | 2.02 |
| Comparative example 2 | 1.37 | 2.18 |
| Comparative example 3 | 1.43 | 2.41 |
As can be seen from Table 2, the hot melt pressure sensitive adhesive composition formed by mixing the SIS thermoplastic elastomer and the epoxy SIS graft copolymer according to a specific proportion and compounding a specific amount of tackifying resin, a plasticizer, an anti-aging auxiliary agent and a silane coupling agent can be used for preparing the hot melt pressure sensitive adhesive with good bonding strength.
The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, including combinations of various technical features in any other suitable way, and these simple modifications and combinations should also be regarded as the disclosure of the invention, and all fall within the scope of the invention.
Claims (10)
1. The hot melt pressure sensitive adhesive composition is characterized by comprising the following components which are stored in a mixed manner or independently:
SIS combination, tackifying resin, plasticizer, anti-aging auxiliary agent and silane coupling agent;
based on the total weight of the composition, the composition contains 18-35 wt% of SIS combination, 38-48 wt% of tackifying resin, 25-35 wt% of plasticizer, 0.5-1.5 wt% of anti-aging auxiliary agent and 0.5-1.5 wt% of silane coupling agent;
the SIS composition contains the following components in percentage by weight: 0.4 to 2.5 SIS thermoplastic elastomer and epoxy SIS graft copolymer.
2. The hot melt pressure sensitive adhesive composition according to claim 1, wherein the SIS composition comprises a mixture of SIS and SIS in an amount by weight ratio of 1: 0.4 to 1.5 SIS thermoplastic elastomer and epoxy SIS graft copolymer.
3. The hot melt pressure sensitive adhesive composition according to claim 1 or 2, wherein the plasticizer is a plasticizer in an amount of 1: 2-5 of a combination of naphthenic oil and polyisobutylene; and/or
The tackifying resin is at least one of C5 hydrogenated resin, C9 resin, rosin resin and terpene resin, and/or
The anti-aging auxiliary agent is at least one selected from tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, tri [2, 4-di-tert-butylphenyl ] phosphite, beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid n-octadecyl ester, 2,4, 6-tri-tert-butylphenol, bis-2, 2,6, 6-tetramethylpiperidinol sebacate, and/or
The silane coupling agent is at least one selected from gamma-glycidoxypropyltrimethoxysilane, gamma-mercaptopropyltriethoxysilane and gamma-aminopropyltriethoxysilane.
4. Use of the hot melt pressure sensitive adhesive composition according to any one of claims 1 to 3 in a hot melt pressure sensitive adhesive.
5. A method of preparing a hot melt pressure sensitive adhesive, comprising the steps of: mixing the components of the hot melt pressure sensitive adhesive composition according to any one of claims 1 to 3;
preferably, the operation of mixing the components of the hot melt pressure sensitive adhesive composition comprises the following steps:
(1) first mixing the SIS combination with the plasticizer to obtain a first mixture;
(2) carrying out second mixing on the first mixture and the tackifying resin to obtain a second mixture;
(3) and thirdly mixing the second mixture, the anti-aging auxiliary agent and the silane coupling agent.
6. The method of claim 5, wherein in step (1), the conditions of the first mixing comprise at least: the temperature is 160 ℃ and 180 ℃, the stirring speed is 8-12rpm, and the stirring time is 30-50 min.
7. The method according to claim 5 or 6, wherein in step (2), the conditions of the second mixing comprise at least: the temperature is 160 ℃ and 180 ℃, the stirring speed is 10-15rpm, and the stirring time is 60-80 min.
8. The method according to any one of claims 5-7, wherein in step (3), the conditions of the third mixing comprise at least: the temperature is 160 ℃ and 180 ℃, the stirring speed is 10-15rpm, and the stirring time is 30-45 min.
9. A hot melt pressure sensitive adhesive prepared by the process of any one of claims 5 to 7.
10. Use of the hot melt pressure sensitive adhesive of claim 9 in waterproofing rolls.
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