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Special pur coating glue for plastic steel plate and preparation method thereof

A technology of coating glue and plastic steel plate, which is applied in the direction of adhesive, adhesive type, polyurea/polyurethane adhesive, etc., and can solve the problems of low initial adhesion force and late adhesion force, inability to meet production needs, high temperature rebound, etc. , to achieve the effect of improved stability, excellent initial adhesion, and dense adhesion

Active Publication Date: 2022-05-13
CHONGQING HANTUO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For plastic-steel materials, due to the different formulas of various manufacturers, the different proportions of recycled materials, and the relatively smooth surface of plastic-steel materials, the practical application of the substrate is greatly restricted, and there are often initial adhesion forces and later adhesions. The situation of low force and high temperature rebound cannot meet the actual production demand

Method used

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  • Special pur coating glue for plastic steel plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The special PUR coating glue for plastic steel plate is mainly composed of the following raw materials by weight: polyether polyol 10kg, polyester polyol 40kg, diisocyanate 5kg, tackifier resin 8kg, crosslinker 2kg, coupling agent 3kg and catalyst 0.01kg.

[0032] Among them, the polyether polyol is a PPG diol with a relative molecular mass of 500

[0033] Polyester polyol is a polyadidiol polyadidilate hexanediol glycol with a relative molecular weight of 8500;

[0034] Diisocyanate is diphenylmethane diisocyanate;

[0035] The tackifying resin is a phenolic resin with hydroxyl groups;

[0036] The crosslinking agent is glycerol;

[0037] The coupling agent is KH550;

[0038] The catalyst was bismuth laurate.

[0039] The preparation method of PUR coating glue for plastic steel plate includes the following steps:

[0040] 1) The polyether polyol, polyester polyol and tackifying resin are added to the reaction kettle at the same time, and dehydrated for 2 hours under the con...

Embodiment 2

[0045] The same features of the present embodiment and Example 1 will not be repeated, the present embodiment and The different features of Example 1 are:

[0046] Polyether polyols are PPG diols with a relative molecular mass of 2500

[0047] Polyester polyol is a polybutylene glycol polyadidate with a relative molecular mass of 4500;

[0048] Diisocyanate is toluene diisocyanate;

[0049] The tackifier resin is a rosin resin with hydroxyl groups;

[0050] The crosslinking agent is trimethylolpropane;

[0051] The coupling agent is KH560;

[0052] The catalyst is bismuth isooctanoate.

Embodiment 3

[0054] The same features of the present embodiment and Example 1 will not be repeated, the present embodiment and The different features of Example 1 are:

[0055] Polyether polyols are PPG diols with a relative molecular mass of 5000

[0056] Polyester polyol is a relative molecular weight of 8500 polyhexanediol adipic acid hexanediol and relative molecular mass of 4500 polybutylene adipic acid glycol diol is mixed in a 1:1 ratio;

[0057] Diisocyanate is hexamethylene diisocyanate;

[0058] The tackifier resin is an acrylic resin with a carboxyl group;

[0059] The crosslinking agent is 1,2,6-hexanetriol;

[0060] The coupling agent is KH570;

[0061] The catalyst was dibutyltin dilaurate.

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Abstract

The invention belongs to the technical field of fine polymer materials, and discloses a special PUR coating glue for plastic steel plates. The invention mainly consists of the following raw materials in parts by weight: 10-35 parts of polyether polyol, 40-70 parts of polyester polyol 5-10 parts of diisocyanate, 8-20 parts of tackifying resin, 2-8 parts of crosslinking agent, 3-10 parts of coupling agent and 0.01-0.04 parts of catalyst; the molecular structure of the tackifying resin contains a or multiple reactive groups. The special PUR coating glue for plastic steel plate of the present invention reacts with polyether polyol, polyester polyol, tackifying resin with active groups and isocyanate, and adds crosslinking agent, catalyst, etc., so that the obtained PUR coating glue It has excellent initial adhesion and late adhesion to plastic steel plates, and the rebound is also effectively controlled at higher temperatures, and the adhesion is dense. The problem can meet the needs of actual production.

Description

Technical field [0001] The present invention belongs to the technical field of fine polymer materials, in particular to a special PUR coating adhesive for plastic steel plates and a preparation method thereof. Background [0002] In recent years, with the improvement of people's living standards and the enhancement of environmental awareness, environmentally friendly products have received more and more general attention, especially in the home improvement industry, the development of environmentally friendly green adhesives has become imperative. The so-called environmentally friendly green adhesive refers to the adhesive that has no pollution to the environment, no toxicity to the human body, and meets the three requirements of "environmental protection, health and safety", and water-based, solid, solvent-free, low-toxicity or non-toxicity has become the main direction of the development of adhesives in the future. PUR hot melt adhesives are increasingly used because of their ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/06C09J175/08C08G18/42C08G18/48C08G18/54C08G18/32C08G18/62C08G18/64C08G18/66C08G18/73C08G18/75C08G18/76
CPCC09J175/06C09J175/08C08G18/4825C08G18/4238C08G18/4202C08G18/7671C08G18/7614C08G18/73C08G18/755C08G18/542C08G18/64C08G18/6225C08G18/3206C08G18/4027C08G18/6611
Inventor 罗斌李卫朋贾积恒
Owner CHONGQING HANTUO TECH CO LTD