Single-component moisture-curing polyurethane adhesive for car roof and preparation method thereof

A technology for polyurethane adhesives and car ceilings, applied in the direction of polyurea/polyurethane adhesives, adhesives, non-polymer adhesive additives, etc. Achieve the effect of fast curing speed, low operating temperature and improved antifreeze performance

Active Publication Date: 2014-09-03
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 t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[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...

Example Embodiment

[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...

Example Embodiment

[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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Abstract

The invention relates to a single-component moisture-curing polyurethane adhesive for a car roof and a preparation method thereof. The obtained adhesive has the advantages of low application temperature, rapid curing speed and convenience in application. By introducing an ethylene oxide chain link in the adhesive molecular structure, the probability of reaction of the NCO groups with water in the later stage is increased, and then by combination with a composite catalyst, the latter curing speed is greatly improved; by adding No. 6 solvent oil, the anti-freezing performance of the adhesive is improved, and the storage is also more stable; and by adding a certain amount of a water removal agent, the effect of water in raw materials and the environment on the stability of the adhesive is eliminated.

Description

Technical field [0001] The present invention involves a adhesive and its preparation method, which specializes in a car ceiling to divide the wet and curing polyurethane adhesive and its preparation method. Background technique [0002] Car ceiling adhesives mainly include dual -composed water -based polyurethane adhesives, dual -composed solvent -based polyurethane adhesives, dual -component solvent -free polyurethane adhesives, and single -group separate solvent -free polyurethane adhesives.Among them, dual -component water -based polyurethane glue adhesives use water as a solvent, which has the advantages of green environmental protection and can reach the advantages of 0 VOC.Limits (generally no more than 4h), the ceiling molding cycle is long (after spraying, it needs to be baked for a period of time, the general molding process is 8-10min) and other insufficient insufficient.The dual-component solvent-type polyurethane adhesives have the advantages of the ceiling molding cy...

Claims

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Application Information

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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
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