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A kind of hot-melt pressure-sensitive adhesive and its preparation process

A hot-melt pressure-sensitive adhesive, thermoplastic polyurethane technology, applied in the direction of adhesives, adhesive types, rosin adhesives, etc., can solve problems such as embrittlement and loss of adhesive surface, achieve elimination of oxidation, reduce energy consumption, avoid effects of aging

Inactive Publication Date: 2017-11-10
BINZHOU POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the aging of the colloidal material during the processing and placement of the hot-melt pressure-sensitive adhesive, it will cause problems such as loss of viscosity and embrittlement of the rubber surface to varying degrees. There is a risk of production accidents during the sizing process. This phenomenon is affected by the high temperature in summer The impact of high humidity, low temperature and dry climate in winter is particularly obvious

Method used

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  • A kind of hot-melt pressure-sensitive adhesive and its preparation process
  • A kind of hot-melt pressure-sensitive adhesive and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A hot-melt pressure-sensitive adhesive, in terms of mass percentage, its raw material composition is: thermoplastic polyurethane elastomer 3%, hydrogenated styrene-butadiene block copolymer 13%, tackifying resin 50%, plasticizer 33.9% , Antioxidant 0.1%.

[0024] Described tackifying resin is selected from KA100L rosin resin.

[0025] The plasticizer fat is selected from 4010 naphthenic oil.

[0026] The antioxidant fat is selected from antioxidant 1010.

[0027] Its concrete preparation steps are:

[0028] (1) take each raw material in proportion, for subsequent use;

[0029] (2) Under vacuum conditions, heat the plasticizer to 105°C, add antioxidant, hydrogenated styrene-butadiene block copolymer and thermoplastic polyurethane elastomer under stirring, keep stirring for 3 hours until all materials melt , heated up to 135°C, added the remaining other raw materials, kept stirring for 3 hours until transparent and homogeneous viscous liquid, degassed at constant temp...

Embodiment 2

[0032] A hot-melt pressure-sensitive adhesive, in terms of mass percentage, its raw material composition is: thermoplastic polyurethane elastomer 1%, hydrogenated styrene-butadiene block copolymer 10%, tackifying resin 55%, plasticizer 33.9% , Antioxidant 0.1%.

[0033] Described tackifying resin is selected from KA100L rosin resin.

[0034]The plasticizer fat is selected from 4006 naphthenic oil.

[0035] The antioxidant fat is selected from antioxidant 268.

[0036] Its concrete preparation steps are:

[0037] (1) take each raw material in proportion, for subsequent use;

[0038] (2) Under vacuum conditions, heat the plasticizer to 145°C, add antioxidant, hydrogenated styrene-butadiene block copolymer and thermoplastic polyurethane elastomer under stirring, keep stirring for 2 minutes until all materials melt , heated up to 160°C, added the remaining other raw materials, kept stirring for 2 hours until transparent and homogeneous viscous liquid, degassed at constant temp...

Embodiment 3

[0041] A hot-melt pressure-sensitive adhesive, in terms of mass percentage, its raw material composition is: thermoplastic polyurethane elastomer 3%, hydrogenated styrene-butadiene block copolymer 13%, tackifying resin 55%, plasticizer 27.8% , 1% solid filler, 0.2% antioxidant.

[0042] Described tackifying resin is selected from KA100L rosin resin.

[0043] The plasticizer fat is selected from white oil.

[0044] The antioxidant fat is selected from antioxidant 268.

[0045] Its concrete preparation steps are:

[0046] (1) take each raw material in proportion, for subsequent use;

[0047] (2) Under vacuum conditions, heat the plasticizer to 125°C, add antioxidant, hydrogenated styrene-butadiene block copolymer and thermoplastic polyurethane elastomer under stirring, keep stirring for 2.5 hours until all materials melt Afterwards, raise the temperature to 148°C, add the remaining other raw materials, keep stirring for 3 hours until it becomes a transparent and uniform visc...

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Abstract

The invention belongs to the technical field of synthetic adhesives and particularly relates to a hot-melt pressure-sensitive adhesive and a preparation technology thereof. The hot-melt pressure-sensitive adhesive is prepared from raw materials in percentage by mass as follows: 1%-5% of a TPU (thermoplastic polyurethane) elastomer, 10%-15% of hydrogenated SEBS (styrene-ethylene-butadiene styrene), 45%-55% of tackifying resin, 25%-35% of a plasticizer, 0-1% of solid filler and 0-0.5% of an antioxidant. The TPU elastomer is added and blended with SEBS for modification, a framework structure is formed, components such as the tackifying resin, the plasticizer, the solid filler, the antioxidant and the like are added, the problem of damp-heat aging of the adhesive due to seasonal change is solved, the preparation technology of the adhesive is explored, the production cycle is shortened, and energy consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of synthetic adhesives, and in particular relates to a hot-melt pressure-sensitive adhesive and a preparation process thereof. Background technique [0002] Hot-melt pressure-sensitive adhesive is a type of adhesive that has the characteristics of both hot-melt adhesive and pressure-sensitive adhesive. It uses thermoplastic elastomer as the main material, and adds tackifier, plasticizer, antioxidant and other additives to melt the adhesive. It has dual characteristics of hot melt adhesive and pressure sensitive adhesive; this kind of adhesive is coated in a molten state, and after cooling and hardening, it can be quickly bonded by applying light finger pressure. At the same time, it can be peeled off relatively easily without polluting the substrate Adhesive surface, mainly used in packaging, labels, sanitary products, medical products, special bonding and other fields. However, due to the aging of the coll...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J193/04C09J191/00C09J191/06C09J153/02C09J175/04C09J11/06C09J11/04
CPCC08L2205/035C09J11/04C09J11/06C09J193/04C08L91/00C08L53/025C08L75/04C08K5/1345C08K2003/265C08L91/06
Inventor 霍宁波赵春海刘晟贾小静
Owner BINZHOU POLYTECHNIC