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A kind of water-based polyurethane electrostatic flocking adhesive for injection molding and preparation method thereof

An electrostatic flocking, polyurethane technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of human injury, release of harmful substances, environmental pollution, etc., to achieve excellent resistance to humidity and heat aging, fast The effect is good, the preparation method is simple and convenient

Active Publication Date: 2022-07-15
LIAONING FIXED STAR FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the present invention provides a water-based polyurethane electrostatic flocking adhesive for injection molding and a preparation method thereof, to solve the problem that existing flocking adhesives for injection molding are mainly solvent-based polyurethanes and that harmful substances will be released during production and use, which will cause harm to the human body. Harm, pollution to the environment

Method used

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  • A kind of water-based polyurethane electrostatic flocking adhesive for injection molding and preparation method thereof
  • A kind of water-based polyurethane electrostatic flocking adhesive for injection molding and preparation method thereof
  • A kind of water-based polyurethane electrostatic flocking adhesive for injection molding and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A water-based polyurethane electrostatic flocking adhesive for injection molding is prepared from the following raw materials by weight:

[0037]

[0038] The polyester polyol is selected from 1,4-butanediol-adipic acid copolymer polyol, and the molecular weight is 500-3000.

[0039] The polyether polyol is selected from polypropylene oxide polyol, and the molecular weight is 500-4000.

[0040] The sulfonate-modified diisocyanate is selected from the products of Beijing Baiyuan Chemical.

[0041] The polyol chain extender includes 10 parts of 1,4-butanediol and 10 parts of 1,6 hexanediol.

[0042] The polyamine chain extender is selected from ethylenediamine.

[0043] The preparation method of the electrostatic flocking adhesive comprises the following steps:

[0044] S1. Prepolymerization reaction: add diphenylmethane diisocyanate, 1,6-hexamethyl diisocyanate, polyester polyol, and polyether polyol into the reaction kettle, heat up to 85±2°C and react for 1.5-2 h...

Embodiment 2

[0054] A water-based polyurethane electrostatic flocking adhesive for injection molding is prepared from the following raw materials by weight:

[0055]

[0056] The polyester polyol is selected from 1,6-hexanediol-adipic acid copolymer polyol, and the molecular weight is 500-3000.

[0057] The polyether polyol is selected from polypropylene oxide polyol, and the molecular weight is 500-4000.

[0058] The sulfonate-modified diisocyanate is selected from the products of Beijing Baiyuan Chemical.

[0059] The polyol chain extender is 1,4 butanediol.

[0060] The polyamine chain extender is selected from hydrazine hydrate.

[0061] The preparation method of the electrostatic flocking adhesive is the same as that in Example 1.

[0062] The chemical indexes of the obtained electrostatic flocking adhesive are as follows:

[0063] Appearance: white blue light emulsion;

[0064] Ionicity: negative;

[0065] pH value: 7.9;

[0066] Solid content: 49.5%.

Embodiment 3

[0068] A water-based polyurethane electrostatic flocking adhesive for injection molding is prepared from the following raw materials by weight:

[0069]

[0070] The polyester polyol includes 100 parts of 1,4-butanediol-adipic acid copolyol and 30 parts of polycaprolactone polyol, and the molecular weight is 500-3000.

[0071] The polyether polyol is selected from polytetrahydrofuran polyol, and the molecular weight is 500-4000.

[0072] The sulfonate-modified diisocyanate is selected from the products of Beijing Baiyuan Chemical.

[0073] The polyol chain extender included 9 parts of 1,4 butanediol and 5.2 parts of neopentyl glycol.

[0074] The polyamine chain extender is selected from diethylenetriamine.

[0075] The preparation method of the electrostatic flocking adhesive is the same as that in Example 1.

[0076] The chemical indexes of the obtained electrostatic flocking adhesive are as follows:

[0077] Appearance: white blue light emulsion;

[0078] Ionicity: ne...

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Abstract

The invention discloses a water-based polyurethane electrostatic flocking adhesive for injection molding and a preparation method thereof, and relates to the technical field of textile adhesives. The electrostatic flocking adhesive is prepared from the following raw materials in parts by weight: diphenylmethane diisocyanate 50- 80 parts, 20-50 parts of 1,6-hexamethyl diisocyanate, 100-150 parts of polyester polyol, 20-50 parts of polyether polyol, 25-40 parts of sulfonate-modified diisocyanate, polyol extended 10-20 parts of chain agent, 5-13.5 parts of polyamine chain extender, and 280-360 parts of water. The preparation method of the water-based polyurethane electrostatic flocking adhesive for injection molding of the present invention is simple and convenient, and the prepared electrostatic flocking adhesive has a solid content of 50%, is soft to the touch, has good fastness, and is excellent in cold resistance, solvent resistance, hydrolysis resistance, and humidity and heat aging resistance. , Injection molding, water-based environmental protection.

Description

technical field [0001] The invention relates to the technical field of textile adhesives, in particular to a water-based polyurethane electrostatic flocking adhesive for injection molding and a preparation method. Background technique [0002] With the development of society, more and more attention has been paid to environmental protection. Water-based products have no pollution to the environment and no harm to the human body. Therefore, it has become an inevitable trend for water-based polyurethane to replace solvent-based polyurethane. [0003] At present, the flocking adhesive for injection molding on the market is mainly solvent-based polyurethane, which has good injection fastness and is widely used. However, solvent-based polyurethane contains a large amount of DMF, toluene and other solvents. The production and use process will release harmful substances, which will cause harm to the human body. , will pollute the environment. SUMMARY OF THE INVENTION [0004] Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/04C09J175/14C08G18/66C08G18/48C08G18/44C08G18/42C08G18/32C08G18/69C08G18/77C08G18/76C08G18/73
CPCC09J175/04C09J175/14C08G18/4238C08G18/48C08G18/4018C08G18/3206C08G18/3228C08G18/6607C08G18/6618C08G18/775C08G18/7671C08G18/73C08G18/724C08G18/3231C08G18/4854C08G18/3234C08G18/6611C08G18/44C08G18/4202C08G18/69C08G18/664C08G18/6651
Inventor 唐丽陈剑冰荣星陈龙孙海娥于广慧
Owner LIAONING FIXED STAR FINE CHEM
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