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One-component moisture-curing polyurethane adhesive for automobile roof and preparation method thereof

A technology for polyurethane adhesives and car roofs, applied in the direction of polyurea/polyurethane adhesives, adhesives, non-polymer adhesive additives, etc., can solve the problems of high environmental requirements, short opening time, and affecting the use time of colloids, etc. Achieve the effects of fast curing speed, low use temperature and improved antifreeze performance

Active Publication Date: 2016-04-06
重庆中科力泰高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a short opening time, which affects the use time of the colloid, and the requirements for the environment are relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: the preparation of adhesive 1

[0029] Raw material formula 1:

[0030] Polyether polyol (polyether polyol is a mixture of polyoxypropylene glycol and polyoxypropylene-ethylene glycol, its number average molecular weight is 3000) 30kg, polyisocyanate (polyisocyanate is polymethylene polyphenyl polyisocyanate, Carbodiimide modified diphenylmethane diisocyanate) 20kg, chain extender (the chain extender is a mixed chain extender of components A and B, wherein component A is ethylene glycol and 1,4 butanediol according to The mixture is mixed at a weight ratio of 1:1, component B is a highly active polyether triol containing ethylene oxide structure, the -OH molar ratio of component A to component B is 4:1) 5kg, catalyst (catalyst is The mixed catalyst of A and B components, wherein A component is a mixture of dibutyltin dilaurate and stannous octoate in a weight ratio of 1:1, and B component is bismorpholino diethyl ether and N- A mixture of methylmorpholi...

Embodiment 2

[0035] Embodiment 2: the preparation of adhesive 2

[0036] Raw material formula 2:

[0037]Polyether polyol (a mixture of polyoxypropylene triol, polytetrahydrofuran diol and its copolyether diol, its data molecular weight is 1000) 50kg, polyisocyanate (polyisocyanate is polymethylene polyphenyl polyisocyanate, carbonized di imine-modified 4,4'-diphenylmethane diisocyanate) 15kg, chain extender (the chain extender is a mixed chain extender of components A and B, wherein component A is diethylene diethylene oxide A mixture of alcohol and neopentyl glycol in a weight ratio of 1:1, component B is a highly active polyether triol containing ethylene oxide structure, and the -OH molar ratio of component A to component B is 10:1) 8kg, catalyst (the catalyst is a mixed catalyst of components A and B, wherein component A is a mixture of dibutyltin diacetate and dibutyltin di(dodecylsulfide) in a weight ratio of 1:1, component B It is a mixture of N-ethylmorpholine and triethylened...

Embodiment 3

[0042] Embodiment 3: the preparation of adhesive 3

[0043] Raw material formula 3:

[0044] Polyether polyol (polyether polyol is a mixture of polyoxypropylene glycol and polyoxypropylene-ethylene glycol, its number average molecular weight is 5000) 70kg, polyisocyanate (polyisocyanate is polymethylene polyphenyl polyisocyanate, A mixture of carbodiimide-modified diphenylmethane diisocyanate and 4,4'-diphenylmethane diisocyanate at a weight ratio of 1:1) 40kg, chain extender (highly reactive polyether three containing ethylene oxide structure Alcohol) 12kg, catalyst (the catalyst is a mixed catalyst of A and B components, wherein A component is a mixture of stannous octoate and dibutyltin diacetate in a weight ratio of 1:1, and B component is N-methyl Imidazole, the weight ratio of component A to component B is 1:10) 0.1kg, tackifier resin (petroleum resin) 15kg, coupling agent (3,3,4-tris(dioctylphosphoryloxy) titanic acid A mixture of isopropyl ester and 3,3,10-tris(dio...

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PUM

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Abstract

The invention relates to a one-component moisture-curing polyurethane adhesive for automobile roof and its preparation method. The prepared adhesive has low service temperature, fast curing speed and convenient use; ethylene oxide chain links are introduced into the molecular structure of the adhesive to increase the The probability of reaction between NCO groups and water in the later stage, combined with the composite catalyst, greatly improves the curing speed in the later stage; adding 6# solvent oil improves the antifreeze performance of the adhesive and makes the storage more stable; Water agent eliminates the influence of moisture in raw materials and the environment on the stability of the adhesive.

Description

technical field [0001] The invention relates to an adhesive and a preparation method thereof, in particular to a one-component moisture-curing polyurethane adhesive for an automobile ceiling and a preparation method thereof. Background technique [0002] Adhesives for automotive roofs mainly include two-component water-based polyurethane adhesives, two-component solvent-based polyurethane adhesives, two-component solvent-free polyurethane adhesives and one-component solvent-free polyurethane adhesives. Among them, the two-component water-based polyurethane adhesive uses water as the solvent, which is environmentally friendly and can reach 0VOC, etc., but there are complex on-site operations (the curing agent needs to be prepared now, and the mixing of the colloid and the curing agent is insufficient), and the use time of the glue is limited. (Generally no more than 4h), long ceiling molding cycle (it needs to be baked for a period of time after spraying glue, and the general...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/08C09J193/04C09J145/00C09J157/02C09J11/04C09J11/06C08G18/66C08G18/48C08G18/58C08G18/12
Inventor 李有刚秦安川柏兴华徐林向离山陈仪苇秦艳梅
Owner 重庆中科力泰高分子材料有限公司