Hot-melt pressure-sensitive adhesive and preparation method thereof

A technology of hot-melt pressure-sensitive adhesives and mass parts, which is applied in the direction of adhesives, adhesive types, mineral oil hydrocarbon copolymer adhesives, etc., and can solve problems such as cracking of the adhesive surface, reduction, and failure to solve the cohesion of the adhesive layer

Inactive Publication Date: 2018-02-23
HUIZHOU NENGHUI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the prior art (publication numbers: CN104629651A and CN104694047A) only solves the problems of low-temperature bending and low-temperature construction, but does not solve the problem that the cohesion of the rubber layer will decrease, the rubber surface will crack, the cohesion of the rubber layer will decrease, and the overlapping edges will bounce off. question

Method used

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  • Hot-melt pressure-sensitive adhesive and preparation method thereof
  • Hot-melt pressure-sensitive adhesive and preparation method thereof
  • Hot-melt pressure-sensitive adhesive and preparation method thereof

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preparation example Construction

[0036] see figure 1 , the preparation method of hot-melt pressure-sensitive adhesive in one embodiment, comprises the steps:

[0037] S110: Mix 5-15 parts by mass of plasticizer, 20-40 parts by mass of polyisobutylene, 0.1-1 part by mass of antioxidant and 2-5 parts by mass of additives under vacuum conditions, and heat up to 130-150° C., then add 20-50 parts by mass of thermoplastic elastomer, continue to heat up to 160-180° C., and carry out heat preservation and mixing operation under vacuum until the thermoplastic elastomer melts.

[0038] Through step S110, the thermoplastic elastomer can be fully heated and melted, that is, the thermoplastic elastomer can be completely melted, and then the thermoplastic elastomer and other components can be mixed more fully and evenly.

[0039] S120: adding 40-70 parts by mass of a tackifying resin and 0.5-2 parts of an anti-ultraviolet additive, and performing heat preservation and mixing operations under vacuum conditions to obtain th...

Embodiment 1

[0045] Add 1.5kg of naphthenic oil, 2kg of polyisobutylene, 0.1kg of β(3,5-di-tert-butyl-4-hydroxyphenyl) pentaerythritol propionate, and 0.3kg of nano-silica powder into the reactor , low-speed vacuum stirring, heating to 130-150°C, adding 2kg of thermoplastic elastomer, continuing to heat up to 160-180°C, keeping warm and vacuum stirring for 60-120min until the elastomer is completely melted; adding 4kg of rosin resin, 0.2kg of 2-(2ˊ-hydroxy-5ˊ-methylphenyl)benzotriazole, heat-preserved and vacuum-stirred for 40-90min, until it dissolves evenly, and discharges to obtain hot-melt pressure-sensitive polymer self-adhesive waterproof membrane with good weather resistance glue. The hot-melt pressure-sensitive adhesive of the invention has good wettability to HDPE and TPO waterproof membranes, has excellent anti-ultraviolet aging performance, good heat-aging resistance, high peeling strength, simple process and low cost.

Embodiment 2

[0047] 1.5kg of naphthenic oil, 2kg of polyisobutylene, 0.1kg of β (3,5-di-tert-butyl-4-hydroxyphenyl) pentaerythritol propionate, 0.1kg of nano-silica powder, 0.2kg of nano-titanium Add white powder to the reaction kettle, stir in low-speed vacuum, heat to 130-150°C, add 2kg of thermoplastic elastomer, continue to heat up to 160-180°C, keep warm and vacuum stir for 60-120min, until the elastomer is completely melted; add 4kg rosin resin, 0.2kg of 2-(2'-hydroxyl-5'-methylphenyl)benzotriazole, heat-preserved and vacuum-stirred for 40-90min, until it dissolves evenly, and the material is discharged to obtain a weather-resistant polymer self-adhesive Waterproof membrane hot melt pressure sensitive adhesive. The hot-melt pressure-sensitive adhesive of the invention has good wettability to HDPE and TPO waterproof membranes, has excellent anti-ultraviolet aging performance, good heat-aging resistance, high peeling strength, simple process and low cost.

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Abstract

The invention relates to a hot-melt pressure-sensitive adhesive and a preparation method thereof. The hot-melt pressure-sensitive adhesive comprises, by mass, 5-15 parts of a plasticizer, 20-40 partsof polyisobutylene, 20-50 parts of a thermoplastic elastomer, 40-70 parts of tackifying resin, 0.1-1 part of an antioxidant, 2-5 parts of an additive and 0.5-2 parts of an anti-UV assistant. The additive can increase the Van der Waals force among hot-melt adhesive molecules to effectively prevent pop-open of overlap edges, caused by the sliding of an adhesive layer; and the polarity of the polyisobutylene is similar to that a waterproof coiled material, so the wettability to the waterproof coiled material of the hot-melt pressure-sensitive adhesive is enhanced, thereby the skin-like contact between the hot-melt adhesive and the waterproof coiled material is generated, the intermolecular effect between the hot-melt adhesive and the waterproof coiled material is increased, the infiltration of water molecules is blocked, water escaping from the overlap edges of the coiled material is prevented, and the peeling strength of the overlap edges is increased. The anti-UV assistant can absorb ultraviolet lights in sunshine, and releases the ultraviolet lights in a heat form in order to achieve a good anti-UV aging effect.

Description

technical field [0001] The invention relates to the technical field of hot-melt pressure-sensitive adhesives, in particular to a hot-melt pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] Since the publication of GB 50108-2008 "Technical Specifications for Waterproofing of Underground Engineering" and GB / T 23457-2009 "Pre-laid / Wet-laid Waterproof Membrane", the application fields of polymer self-adhesive waterproof membranes have become wider and wider. In the process of use, it was found that the cohesion of the adhesive layer of the coiled material would decrease under the sun, which would lead to cracking of the rubber surface, loss of adhesion of the adhesive surface at the overlapping edge of the coiled material, and the problem of springing off after the overlapping joint was soaked in water. [0003] However, the prior art (publication numbers: CN104629651A and CN104694047A) only solves the problems of low-temperature bending ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J193/04C09J123/22C09J201/00C09J157/02C09J11/04C09J11/06C09J11/08
CPCC09J193/04C08K2003/2241C08K2201/011C08L2201/08C08L2205/035C08L2207/04C09J11/04C09J11/06C09J11/08C09J157/02C08L23/22C08L101/00C08K3/36C08K5/1345C08K5/3475C08K3/22C08K5/3435
Inventor 江强杨学根陈灿坚
Owner HUIZHOU NENGHUI CHEM CO LTD
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