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A kind of modified polyurethane water-resistant adhesive film and preparation method thereof

A polyurethane and water-resistant glue technology, applied in the field of materials, can solve the problems affecting the scope of application, poor water resistance, etc., and achieve the effect of excellent water resistance, good toughness and good mechanical properties

Active Publication Date: 2018-08-17
佛山霄绫包装材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its water resistance is not good, which affects its application range. Therefore, by modifying it to improve its water resistance, it can greatly increase its application range and increase its value.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A modified polyurethane water-resistant adhesive film, prepared from the following ingredients in parts by weight: 20 parts of polyethylene glycol, 5 parts of tetraethyl orthosilicate, 3 parts of hydroxyl silicone oil, and 40 parts of diphenylmethane diisocyanate 0.5 parts of polydimethylsiloxane, 0.1 parts of N,N-dimethylcyclohexylamine, 0.2 parts of triethanolamine, 0.3 parts of 2,2-dimethylolpropionic acid, 0.2 parts of 2-picoline , 10 parts of N,N-dimethylformamide, 1 part of ethyl acetate, 2 parts of acetone, 6 parts of butylene glycol, and 5 parts of deionized water.

[0026] The preparation method of the above-mentioned modified polyurethane water-resistant adhesive film is as follows: first, polyethylene glycol, diphenylmethane diisocyanate, ethyl acetate and N,N-dimethylformamide are stirred and reacted at a temperature of 60°C After 20 minutes, add 2,2-dimethylolpropionic acid and 2-picoline, continue to stir for 10 minutes, then add tetraethyl orthosilicate, ...

Embodiment 2

[0028] A modified polyurethane water-resistant adhesive film, prepared from the following components in parts by weight: 22 parts of polyethylene glycol, 6 parts of tetraethyl orthosilicate, 4 parts of hydroxyl silicone oil, and 45 parts of diphenylmethane diisocyanate 0.6 parts of polydimethylsiloxane, 0.15 parts of N,N-dimethylcyclohexylamine, 0.3 parts of triethanolamine, 0.4 parts of 2,2-dimethylol propionic acid, 0.25 parts of 2-picoline , 12 parts of N,N-dimethylformamide, 1.3 parts of ethyl acetate, 3 parts of acetone, 7 parts of butylene glycol, and 6 parts of deionized water.

[0029] The preparation method of the above-mentioned modified polyurethane water-resistant adhesive film is as follows: first, polyethylene glycol, diphenylmethane diisocyanate, ethyl acetate and N,N-dimethylformamide are stirred and reacted at a temperature of 61°C After 25 minutes, add 2,2-dimethylolpropionic acid and 2-picoline, continue to stir for 15 minutes, then add tetraethyl orthosilic...

Embodiment 3

[0031] A modified polyurethane water-resistant adhesive film, prepared from the following components in parts by weight: 25 parts of polyethylene glycol, 7.5 parts of tetraethyl orthosilicate, 5 parts of hydroxyl silicone oil, and 50 parts of diphenylmethane diisocyanate 0.75 parts of polydimethylsiloxane, 0.2 parts of N,N-dimethylcyclohexylamine, 0.35 parts of triethanolamine, 0.45 parts of 2,2-dimethylol propionic acid, 0.3 parts of 2-picoline , 15 parts of N,N-dimethylformamide, 1.5 parts of ethyl acetate, 3.5 parts of acetone, 8 parts of butylene glycol, and 7.5 parts of deionized water.

[0032] The preparation method of the above-mentioned modified polyurethane water-resistant adhesive film is as follows: first, polyethylene glycol, diphenylmethane diisocyanate, ethyl acetate and N,N-dimethylformamide are stirred and reacted at a temperature of 62°C After 25 minutes, add 2,2-dimethylolpropionic acid and 2-picoline, continue to stir for 15 minutes, then add tetraethyl ort...

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Abstract

The invention provides a modified polycarbamate water-resistant adhesive film and a preparation method thereof. The preparation method comprises the following steps: stirring polyethyleneglycol, diphenylmethane diisocyanate, ethyl acetate and N,N-dimethylformamide to react, adding 2,2-dimethylolpropionic acid and 2-methylpyridine, continuing stirring, adding ethyl orthosilicate, hydroxy silicon oil and polydimethylsiloxane, stirring, adding N,N-dimethyl cyclohexylamine, continuing stirring at uniform speed, adding acetone, stirring, adding butanediol to react, cooling to 30-35 DEG C, adding triethanolamine, stirring with a stirrer, slowly adding deionized water while continuing stirring, and finally, carrying out reduced pressure distillation to obtain the modified polycarbamate water-resistant adhesive film. The modified polycarbamate water-resistant adhesive film has the advantages of favorable mechanical properties, favorable toughness, low swelling strain tendency and excellent water resistance.

Description

technical field [0001] The invention relates to the field of materials, in particular to a modified polyurethane water-resistant adhesive film and a preparation method thereof. Background technique [0002] Polyurethane is a polymer made from raw materials such as polyisocyanate, polyether polyol or polyester polyol or / and small molecule polyol, polyamine or water and other chain extenders or crosslinking agents. By changing the type and composition of raw materials, the shape and performance of the product can be greatly changed, and the final product can be obtained from soft to hard. Polyurethane has the advantages of strong mechanical properties, wear resistance, and chemical resistance. Its product forms include soft, semi-rigid, and rigid foam plastics, elastomers, and elastic fibers. It has been widely used in automobile manufacturing , refrigerator manufacturing, transportation, civil construction, electromechanical, petrochemical, mining machinery and aviation and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/32C08G18/34C08G18/10
CPCC08G18/10C08G18/4833C08G18/6692C08G18/3281C08G18/3206C08G18/348
Inventor 史闵新
Owner 佛山霄绫包装材料有限公司
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