Preparation method of waterborne polyurethane adhesive

A water-based polyurethane and adhesive technology, applied in the direction of polyurea/polyurethane adhesive, adhesive, adhesive type, etc., can solve the problems of low minimum activation temperature, low production efficiency, high peel strength, etc., and achieve good bonding effect , high production efficiency and stable process

Pending Publication Date: 2022-07-22
黄君涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Although the prepared sulfonic acid waterborne polyurethane adhesive has the characteristics of high solid content, low minimum activation temperature and high peel strength, it has low production efficiency and high energy consumption.

Method used

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  • Preparation method of waterborne polyurethane adhesive
  • Preparation method of waterborne polyurethane adhesive
  • Preparation method of waterborne polyurethane adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] A water-based polyurethane adhesive is prepared by mixing part A and part B in a ratio of parts by weight of 100:9, and part A is made from raw materials in parts by weight of the following components: 115 parts of aromatic diisocyanate, 115 parts of polyether polyol 200 parts of alcohol one, 170 parts of poly-1,4-butanediol adipate diol, 34 parts of dimethylolpropionic acid, 19 parts of salt-forming agent, 2.5 parts of chain extender, 69 parts of organic solvent (each the same weight);

[0080] Part B is made from raw materials in parts by weight of the following components: 17.5 parts of aromatic diisocyanate, 17.5 parts of isophorone diisocyanate, 14 parts of polyether polyol one, 14 parts of polyether polyol two, polyether polyol 24 parts of polyol 3, 15 parts of polyether polyol 4, 4.5 parts of diethylene glycol, 39 parts of ethyl acetate (each part has the same weight);

[0081] In step 1, the aromatic diisocyanate, polyether polyol 1 and poly-1,4-butanediol adip...

Embodiment 2

[0088] A water-based polyurethane adhesive is prepared by mixing part A and part B in a ratio of parts by weight of 100:9, and part A is made from raw materials in parts by weight of the following components: 115 parts of aromatic diisocyanate, 115 parts of polyether polyol 200 parts of alcohol one, 170 parts of poly-1,4-butanediol adipate diol, 34 parts of dimethylolpropionic acid, 19 parts of salt-forming agent, 2.5 parts of chain extender, 69 parts of organic solvent (each the same weight);

[0089] Part B is made from raw materials in parts by weight of the following components: 17.5 parts of aromatic diisocyanate, 17.5 parts of isophorone diisocyanate, 14 parts of polyether polyol one, 14 parts of polyether polyol two, polyether polyol 24 parts of polyol 3, 15 parts of polyether polyol 4, 4.5 parts of diethylene glycol, 39 parts of ethyl acetate (each part has the same weight);

[0090] Step 1, according to the weight parts of each component, add aromatic diisocyanate, p...

Embodiment 3

[0096] A polyurethane adhesive is prepared from the raw materials in parts by weight of the following components: 38 parts of castor oil, 11.75 parts of toluene diisocyanate, 49.75 parts of styrene, and 0.5 parts of dibenzoyl peroxide. When the stirring device is controlled at 20-80 DEG C, the mixture is melted and mixed evenly to prepare the polyurethane adhesive.

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Abstract

The invention provides a preparation method of a waterborne polyurethane adhesive, belongs to the technical field of adhesive production, and solves the technical problems of low preparation efficiency, high cost, poor bonding effect and the like of the existing waterborne polyurethane adhesive. According to the preparation method of the waterborne polyurethane adhesive, the waterborne polyurethane adhesive is prepared by mixing the part A and the part B according to the weight part ratio of 100: (8.5-9.5), a multi-stage stirring device is adopted for mixed production, the production efficiency is high, and the energy consumption is low; the raw materials are scientifically and reasonably matched, and the bonding effect is remarkable; the multi-stage stirring device is compact in structure, small in occupied area, high in stirring efficiency and low in energy consumption, and simultaneous production of a part A and a part B is realized; the heating stirring kettle is matched with the control heater and the first heat preservation barrel to guarantee constant-temperature stirring, the temperature adjusting stirring tank is matched with the second heat preservation barrel, materials in the temperature adjusting stirring tank are effectively and rapidly cooled, stable mixing and uniform stirring and mixing are guaranteed, the mixing efficiency is improved, and the production efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and relates to a preparation method of an aqueous polyurethane adhesive. Background technique [0002] Waterborne polyurethane adhesives are used more and more widely. However, the entire polyurethane adhesive industry is still dominated by solvent-based adhesives. With the strengthening of people's safety and environmental awareness, the research on water-based polyurethane adhesives has developed rapidly. Water-based polyurethane adhesive refers to the adhesive formed by dissolving polyurethane in water or dispersing it in water. It is the advantage of easy blending of emulsion polymers, which is beneficial to modification. After the 1990s, it has been gradually applied in the bonding of automotive interiors, the manufacture of kitchen supplies, the manufacture of composite films, the bonding of soles and uppers, and clothing processing. However, there are still many shortcomings, and its ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C08G18/66C08G18/48C08G18/42C08G18/32C08G18/34B01F23/70B01F33/82B01F35/92
CPCC09J175/04C08G18/4804C08G18/4238C08G18/4018C08G18/348C08G18/3206C08G18/6625C08G18/4833C08G18/4854C08G18/3228C08G18/329C08G2170/00
Inventor 黄君涛钱呈辉周扬勇徐航
Owner 黄君涛
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