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High performance two-component polyurethane pressure sensitive adhesive and preparation method and application thereof

A two-component polyurethane and pressure-sensitive adhesive technology, applied in the field of pressure-sensitive adhesives, can solve problems such as irritating odors and skin allergies, and achieve good moisture resistance and good moisture resistance

Inactive Publication Date: 2018-12-07
WUXI HAITE NEW MATERIAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polymerization of acrylic resin will leave some acrylate monomers, which have a pungent smell and are prone to skin allergies

Method used

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  • High performance two-component polyurethane pressure sensitive adhesive and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A pressure-sensitive adhesive made from the following raw materials: 8.5 g of isophorone diisocyanate, 3 g of toluene diisocyanate, 27 g of polytetrahydrofuryl ester diol, 3.4 g of 1,4-butanediol, and 0.1 g of dibutyltin dilaurate , ethyl acetate 29g, toluene 29g, epoxy curing agent L-75.

[0035] The preparation method comprises the following steps:

[0036] (1) Weigh 70% of polytetrahydrofurfuryl ester diol, isophorone diisocyanate, toluene diisocyanate and ethyl acetate and 70% of toluene mass and mix well, pour into the mixture equipped with stirring device, thermometer and condenser tube In the flask, heated to 65°C;

[0037] (2) Add all the catalyst dibutyltin dilaurate into the reaction flask, and raise the temperature to 80°C.

[0038] (3) Pay attention to observe the reaction phenomenon. After the reaction temperature rises to 80°C, keep warm for 4 hours, then add 1,4-butanediol for chain extension reaction, and keep warm for 4 hours;

[0039] (4) Add the re...

Embodiment 2

[0042] A pressure-sensitive adhesive made from the following raw materials: 6.5 g of isophorone diisocyanate, 3.5 g of hexamethylene diisocyanate, 30 g of polyoxypropylene diol, 2.5 g of trimethylolpropane, and dibutyltin dilaurate 0.08g, ethyl acetate 30g, toluene 27.42g, and epoxy curing agent.

[0043] The preparation method comprises the following steps:

[0044] (1) Weigh and mix polyoxypropylene glycol, isophorone diisocyanate, hexamethylene diisocyanate, 90% of total ethyl acetate and 90% of total toluene mass, and pour into a stirring device , thermometer and condenser tube, heated to 65°C;

[0045](2) Add the catalyst dibutyltin dilaurate into the reaction flask, and raise the temperature to 80°C.

[0046] (3) Pay attention to observe the reaction phenomenon. After the reaction temperature is raised to 80° C., keep the temperature for 4 hours, then add trimethylolpropane for chain extension reaction, and keep the temperature for 4 hours.

[0047] (4) Add remaining ...

Embodiment 3

[0050] A pressure-sensitive adhesive made from the following raw materials: 8g of isophorone diisocyanate, 4g of toluene diisocyanate, 24g of polycarbonate diol, 4g of 1,6-hexanediol, 0.12g of dibutyltin dilaurate, acetic acid Ethyl ester 29.88g, toluene 30g, and epoxy curing agent.

[0051] The preparation method comprises the following steps:

[0052] (1) After weighing and mixing 80% of polycarbonate diol, isophorone diisocyanate, toluene diisocyanate and total ethyl acetate and 80% of total toluene mass, pour into a mixture equipped with stirring device, thermometer and In the flask with the condenser tube, heat to 60°C;

[0053] (2) Add the catalyst dibutyltin dilaurate into the reaction flask, and raise the temperature to 80°C.

[0054] (3) Pay attention to observe the reaction phenomenon. After the reaction temperature is raised to 80°C, keep the temperature for 4 hours, then add 1,6 hexanediol for chain extension reaction, and keep the temperature for 4 hours.

[00...

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Abstract

The invention discloses a high performance two-component polyurethane pressure sensitive adhesive and a preparation method and application thereof. The high performance two-component polyurethane pressure sensitive adhesive comprises a component (A) and a component (B). The component (A) is a glue liquid prepared from 10-12% by weight of a hard monomer, 24-30% by weight of a soft monomer, 2.5-4% by weight of a chain extender, 0.08-0.12% by weight of an organotin catalyst and 54-60% by weight of a solvent. The component (B) is an epoxy curing agent. The weight of the component (B) is 0.1% thatof the component (A). The high performance two-component polyurethane pressure sensitive adhesive has low adhesion, low peeling force and good moisture resistance.

Description

technical field [0001] The invention relates to the technical field of pressure-sensitive adhesives, in particular to a high-performance two-component polyurethane pressure-sensitive adhesive, its preparation method and application. Background technique [0002] Polyurethane adhesives are adhesives containing carbamate (-NHCOO-) or isocyanate groups (-NCO) in the molecular chain. Since the polyurethane adhesive contains a group with strong chemical activity, it not only has a strong bonding ability with materials containing active hydrogen such as foam, plastic, wood, leather, fabric, paper, ceramics and other porous materials, but also with metal, Surface smooth materials such as glass and rubber also have good chemical adhesion. In addition, polyurethane adhesives also have the characteristics of adjustable toughness, simple bonding process, and excellent low-temperature resistance. One of the important varieties. [0003] In 1940, researchers from German Farben (the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/08C09J175/04C09J7/25C09J7/38C08G18/66C08G18/32C08G18/48C08G18/44
CPCC08G18/3206C08G18/44C08G18/4825C08G18/4854C08G18/664C08G18/6674C08G18/6677C09J7/25C09J7/38C09J175/04C09J175/08C09J2301/122C09J2301/302C09J2467/006
Inventor 李卫东薛伟白永平李晶波殷晓芬
Owner WUXI HAITE NEW MATERIAL RES INST
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