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Adhesive for industrial-washing-resistant bright silver reflective fabric and preparation method thereof

A technology of reflective cloth and adhesives, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of poor washability and achieve flexible hand feeling, excellent hydrolysis resistance, and good bonding strength Effect

Pending Publication Date: 2020-06-09
泰安聚仁新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the prior art, the present invention provides an adhesive for bright silver reflective fabrics resistant to industrial washing and a preparation method thereof. The present invention aims at the disadvantage of poor washability of bright silver reflective fabrics compounded with polyurethane adhesives under industrial washing conditions , through optimized process design and scientific component ratio, the resistance to washing under harsh conditions is greatly enhanced, and the process is simple, energy-saving and environmentally friendly, with strong initial adhesion, suitable for promotion

Method used

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preparation example Construction

[0056] A preparation method for industrial washing-resistant bright silver reflective cloth adhesive, comprising:

[0057] Step 1. Heat a certain amount of polyester polyol and / or polyether polyol to 120°C, stir and mix evenly, dehydrate under reduced pressure for 2 hours, and then cool down to 60°C;

[0058] As an example, the vacuum dehydration process requires a degree of vacuum ≥ 0.1 MPa;

[0059] As an example, the polyether polyol is: polytetrahydrofuran ether, the molecular weight is 1000-3000, commercial products such as: PTMEG1000, PTMEG2000 and PTMEG3000, etc.;

[0060] Further, the preparation method of described polyester polyol comprises:

[0061] ①Primary esterification: Add sebacic acid, isophthalic acid, adipic acid, ethylene glycol, diethylene glycol and neopentyl glycol into the polyester reactor at one time, heat up to 210-230°C, and react 2 -4 hours, complete the first esterification, the acid value of the first esterification is ≤20mg KOH / g;

[0062] ②P...

Embodiment 1

[0071] Embodiment 1: A kind of preparation method that is used for industrial washable bright silver reflective cloth adhesive, comprises:

[0072] Step 1, preparation of polyester polyol (each raw material is calculated by mass percentage): add in polyester reactor: 29 parts by mass of sebacic acid, 25 parts by mass of isophthalic acid, 4 parts by mass of adipic acid, 8 parts by mass Parts of ethylene glycol, 9 parts by mass of dihexanediol, 25 parts by mass of neopentyl glycol, 0.02 parts by mass of tetra-n-butyl titanate and 0.04 parts by mass of triphenyl phosphite, stir well and heat up to 210-230°C, After 4 hours of reaction, 11.8 parts by mass of distilled water were distilled, and the acid value measured after the esterification was 17.9 mg KOH / g;

[0073] After the esterification is completed, vacuumize the inside of the polyester kettle, -0.02MPa, -0.04MPa, -0.06MPa, -0.08MPa, and pre-pump for 1 hour in sequence, and control the temperature of the kettle at 225-230°C...

Embodiment 2

[0076] Embodiment 2: A kind of preparation method that is used for industrial washable bright silver reflective cloth adhesive, comprises:

[0077] Step 1, preparation of polyester polyol (each raw material is calculated by mass percentage): add 26 mass parts sebacic acid, 19 mass parts isophthalic acid, 14 mass parts adipic acid, 10 mass parts Ethylene glycol, 9 parts by mass of dihexanediol, 22 parts by mass of neopentyl glycol, 0.02 parts by mass of tetra-n-butyl titanate and 0.04 part of triphenyl phosphite, stir well and heat up to 210-230°C, react 4h, 13.4 parts by mass of distilled water, the acid value measured after the esterification is 16.5mg KOH / g; after the esterification, vacuumize the inside of the polyester kettle, -0.02MPa, -0.04MPa, -0.06MPa, -0.08MPa , followed by pre-pumping for 1h, and the temperature of the kettle was controlled at 225-230°C; after the pre-pumping, a long-term vacuuming operation was carried out, the vacuum degree reached -0.1MPa, the lon...

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Abstract

The invention relates to an adhesive for an industrial-washing-resistant bright silver reflective fabric and a preparation method thereof. The adhesive is prepared by compounding polyurethane matrix resin, which is prepared from polyester and / or polyether polyol and isocyanate through a reaction, a coupling agent, a catalyst, an anti-hydrolysis additive and a solvent. The adhesive comprises the following components in percentage by mass: 20-40% of polyester polyol with a molecular weight of 1000 to 3000, 0-15% of polyether polyol, 3-5% of isocyanate, 50-60% of the solvent, 0.4-2% of the coupling agent, 0.01-0.1% of the catalyst and 0.5-2% of the anti-hydrolysis additive, wherein the catalyst is one or a combination of bismuth iso-octoate and bismuth neodecanoate. The adhesive has the advantages of favorable bonding strength, flexible hand feeling, excellent hydrolysis resistance, simple process, energy saving performance, environment friendliness and high initial adhesion, and is suitable for popularization.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to an adhesive for industrial washing-resistant bright silver reflective cloth and a preparation method thereof, which is mainly used in the field of polyurethane adhesives for industrial washing-resistant reflective cloth. Background technique [0002] In the prior art, the adhesives used for reflective fabrics mainly use acrylic resin system resins and polyurethane system resins. Among them, acrylic resin systems are mainly used for reflective products that are relatively mild to washing conditions, while polyurethane system resins are used for more stringent washing conditions. Reflective products, especially bright silver fabrics resistant to industrial washing, are required to be washed 100 times / 2h in 90°C hot water containing washing powder, and the appearance of the product after washing must not be significantly damaged, and the reflectivity shall be well preserved; [00...

Claims

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Application Information

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IPC IPC(8): C09J175/04C09J175/06C09J175/08C09J11/06C09J11/08C08G18/48C08G18/42C08G63/672
CPCC08G18/4018C08G18/425C08G18/4854C08G63/672C09J11/06C09J11/08C09J175/04C09J175/06C09J175/08C08L79/00C08K5/544C08K5/29C08K5/5435
Inventor 郑涛李岗郭仁星
Owner 泰安聚仁新材料有限公司
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