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Double-component polyurethane adhesive and preparation method thereof

A two-component polyurethane and adhesive technology, which is applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of slow curing speed and insufficient bonding strength of adhesives, and achieve bonding strength High, high seismic requirements

Active Publication Date: 2019-11-08
FUYAO GLASS IND GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to develop and provide a two-component polyurethane glue with the characteristics of high bonding strength, good shock resistance, convenient operation, and fast curing to bond the accessories on the glass surface, so as to solve the problem of bonding the existing accessories with adhesive glue. Insufficient strength, slow curing speed, heating and curing, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In the three-necked flask, add castor oil polyol 14.3%Wt, polyester polyol 12.6%Wt (two-official, hydroxyl value 187mgKOH / g), polyether polyol (three-official, hydroxyl value 80mgKOH / g) 13.7%Wt , Hindered amine 4,4,-bis-butylaminodiphenylmethane chain extender 3.6%Wt, plasticizer diisononyl phthalate (DINP) 18.4%Wt, modulus reducer hydrogenated rosin resin 4.7 %Wt, heated to 100-120°C, stirred and dehydrated under vacuum for 1-2 hours, then cooled to 60°C, added to the planetary stirring mixer; then added inorganic filler nano-calcium carbonate 34.2%Wt, coupled Agent 0.8%Wt, catalyst lead isocyanate 0.2%, heat-sensitive catalyst DY-550 30.2%Wt, stirred for 2 hours in a vacuum state, and discharged; the preparation method of B component is: add polyether polyol in a three-necked flask 40% (hydroxyl value 48mgKOH / g) Wt, plasticizer 8.7% Wt, heated to 100-120°C, stirred and dehydrated under vacuum for 1-2 hours, then cooled to 60°C, added liquefied diphenylmethane Isocyan...

Embodiment 2

[0045] In the three-necked flask, add castor oil polyol 20.1%Wt, polyester polyol 12.6%Wt (two-official, hydroxyl value 154mgKOH / g), polyether polyol (three-official, hydroxyl value 56mgKOH / g) 7.4%Wt , 4,4,-methylenebis(3-chloro 2,6-diethylaniline, 4,4,-methylenebis(2,6-diethyl)aniline chain extender 3.6%Wt, extender Plasticizer diisononyl phthalate (DINP) 15.2%Wt, modulus reducer hydrogenated rosin resin 3.4%Wt, heated to 100-120°C, stirred and dehydrated under vacuum for 1-2 hours, then cooled to 60°C, add it to the planetary stirring mixer; then add inorganic filler nano-calcium carbonate 25.6%Wt, coupling agent 1.1%Wt, catalyst lead isocyanate 0.2%, heat-sensitive catalyst DY-588 30.15%Wt, in a vacuum state Stir at low temperature for 2 hours, discharge; the preparation method of B component is: add polyether polyol 35.7% (hydroxyl value 56mgKOH / g) Wt, plasticizer 11.2% Wt in the there-necked flask, heat to 100-120 ℃, Stir and dehydrate under vacuum for 1-2 hours, then co...

Embodiment 3

[0047] In the three-necked flask, add castor oil polyol 9.4%Wt, polyester polyol 18.9%Wt (two-official, hydroxyl value 120mgKOH / g), polyether polyol (three-official, hydroxyl value 36mgKOH / g) 11.5%Wt , Hindered amine 4,4,-bis-butylaminodiphenylmethane chain extender 7.3%Wt, plasticizer diisononyl phthalate (DINP) 8.6%Wt, modulus reducer hydrogenated rosin resin 8.4 %Wt, heated to 100-120°C, stirred and dehydrated under vacuum for 1-2 hours, then cooled to 60°C, added to the planetary stirring mixer; then added inorganic filler nano-calcium carbonate 35.1%Wt, coupled Agent 0.5%Wt, catalyst lead isocyanate 0.2%, heat-sensitive catalyst DY-588 30.1%Wt, stirred for 2 hours in a vacuum state, and discharged; the preparation method of B component is: add polyether polyol in a three-necked flask 36.7% (hydroxyl value 28mgKOH / g) Wt, plasticizer 8.7% Wt, heated to 100-120°C, stirred and dehydrated under vacuum for 1-2 hours, then cooled to 60°C, added liquefied diphenylmethane Isocyan...

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Abstract

The invention discloses a double-component polyurethane adhesive and a preparation method thereof. The double-component polyurethane adhesive mainly consists of a component A and a component B, wherein the ratio of the component A to the component B is 1:1 (Wt). The component A comprises 10-35 Wt% of castor oil polyol, 10-40 Wt% of polyester polyol, 5-30 Wt% of polyether polyol, 1-10 Wt% of a hindered amine chain extender, 10-40 Wt% of a plasticizer, 1-15 Wt% of a modulus reducer, 30-60 Wt% of an inorganic filler, 0.5-3 Wt% of a coupling agent, 0.1-0.5 Wt% of a catalyst and 0.1-0.5 Wt% of a thermosensitive catalyst. The component B comprises 5-40 Wt% of liquefied diphenylmethane diisocyanate, 10-60 Wt% of polymethylene polyphenyl polyisocyanate, 20-40 Wt% of polyether polyol, 10-80 Wt% ofan inorganic filler, 1-10 Wt% of a thixotropic agent and 0.5-3 Wt% of a water removing agent. The double-component polyurethane adhesive has the characteristics of quick curing, high bonding strengthand high anti-seismic requirement for accessory adhesion, and is mainly applied to accessory adhesion on automobile glass.

Description

Technical field: [0001] The invention belongs to the technical field of two-component polyurethane adhesives, has the characteristics of environmental protection, high bonding strength, good shock resistance, convenient operation and fast curing, and can be applied to bonding accessories on automobile glass. Background technique: [0002] The traditional bonding method of glass and accessories (such as rearview mirror base, camera bracket, bracket, etc.) is: after cleaning the surface of glass and accessories, stick the accessories with ordinary tape or pressure-sensitive tape or one-component polyurethane adhesive , or epoxy modified hybrid adhesives bonded to glass surfaces. However, there are some bonding or operability problems in each of these methods of bonding accessories: [0003] (1) After using ordinary tape to bond accessories, the bonding strength between accessories and glass cannot meet the requirements, and it is prone to aging and degumming. This bonding met...

Claims

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Application Information

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IPC IPC(8): C09J175/14C09J11/04C09J11/06C08G18/67C08G18/42C08G18/48C08G18/32
CPCC08G18/3243C08G18/36C08G18/4018C08G18/42C08G18/4804C08G18/4829C08G18/6618C08K2003/265C08K2201/011C09J175/14C08K13/02C08K3/26C08K3/34C08K3/36C08K5/12
Inventor 冯涛王加赋陈绍木郑国新崔晶晶
Owner FUYAO GLASS IND GROUP CO LTD