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A Dual Responsive Composite Adhesive

An adhesive and responsive technology, applied in the field of dual-responsive composite adhesives, can solve the problems of slow drying speed, low initial viscosity, poor water resistance, etc., and achieve durable adhesion and high-strength adhesion. Effect

Active Publication Date: 2018-05-04
常州勤行电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (5) Poor wettability to non-polar substrates;
[0009] (6) Slow drying, low initial viscosity, and poor water resistance

Method used

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  • A Dual Responsive Composite Adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A dual responsive composite adhesive, the adhesive is composed of the following components in the indicated mass parts: water-based polyurethane: 28 parts, DMAEMA / NIPAM copolymer: 19 parts, oxidized starch: 17.5 parts, carboxymethyl Base cellulose: 3.2 parts, additives: 12.8 parts, water: 14 parts.

[0030] Moreover, the water-based polyurethane is aliphatic water-based polyurethane, and the aliphatic water-based polyurethane is formed by reacting aliphatic isocyanate and aliphatic polyol.

[0031] Furthermore, the relative molecular weight of the waterborne polyurethane is 10,000.

[0032] In addition, the relative molecular weight of the DMAEMA / NIPAM copolymer is 5000.

[0033] Meanwhile, the auxiliary agent is a dispersant, a stabilizer and a defoamer.

[0034] A preparation method of a dual responsive composite adhesive, comprising the steps of:

[0035] (1) Preparation of water-based polyurethane: mix aliphatic isocyanate, aliphatic polyol, hydrophilic chain ext...

Embodiment 2

[0039] A dual responsive composite adhesive, the adhesive is composed of the following components in the indicated mass parts: water-based polyurethane: 15 parts, DMAEMA / NIPAM copolymer: 10 parts, oxidized starch: 15 parts, carboxymethyl Base cellulose: 5 parts, additives: 8 parts, water: 8 parts.

[0040] Moreover, the water-based polyurethane is aliphatic water-based polyurethane, and the aliphatic water-based polyurethane is formed by reacting aliphatic isocyanate and aliphatic polyol.

[0041] Furthermore, the relative molecular weight of the waterborne polyurethane is 6000.

[0042] In addition, the relative molecular weight of the DMAEMA / NIPAM copolymer is 4000.

[0043] Meanwhile, the auxiliary agent is a dispersant, a stabilizer and a defoamer.

[0044] A preparation method of a dual responsive composite adhesive, comprising the steps of:

[0045] (1) Preparation of water-based polyurethane: mix aliphatic isocyanate, aliphatic polyol, hydrophilic chain extender and ...

Embodiment 3

[0049] A dual responsive composite adhesive, the adhesive is composed of the following components in parts by mass: water-based polyurethane: 35 parts, DMAEMA / NIPAM copolymer: 25 parts, oxidized starch: 18 parts, carboxymethyl Base cellulose: 1 part, auxiliary agent: 14 parts, water: 15 parts.

[0050] Moreover, the water-based polyurethane is aliphatic water-based polyurethane, and the aliphatic water-based polyurethane is formed by reacting aliphatic isocyanate and aliphatic polyol.

[0051] Furthermore, the relative molecular weight of the waterborne polyurethane is 20,000.

[0052]In addition, the relative molecular weight of the DMAEMA / NIPAM copolymer is 8000.

[0053] Meanwhile, the auxiliary agent is a dispersant, a stabilizer and a defoamer.

[0054] A preparation method of a dual responsive composite adhesive, comprising the steps of:

[0055] (1) Preparation of water-based polyurethane: mix aliphatic isocyanate, aliphatic polyol, hydrophilic chain extender and cat...

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Abstract

The invention discloses a dual-responsiveness compound adhesive. The adhesive is characterized by comprising components in parts by mass as follows: 15-35 parts of waterborne polyurethane, 10-25 parts of a DMAEMA / NIPAM (dimethylaminoethyl methacrylate / N-isopropylacrylamide) copolymer, 15-18 parts of oxidized starch, 1-5 parts of carboxymethylcellulose, 8-15 parts of an aid and 7-18 parts of water. The DMAEMA / NIPAM copolymer of the dual-responsiveness compound adhesive forms a three-dimensional net structure during preparation, the waterborne polyurethane is coated with the three-dimensional net structure, and the finally prepared adhesive has the high strength and the lasting adhesion property; besides, DMAEMA and NIPAM are a pH-sensitive monomer and a temperature-sensitive monomer respectively, so that the formed adhesive has pH stimuli responsiveness and temperature stimuli responsiveness simultaneously, and the adhesion property of the adhesive can be adjusted by changing the pH and the temperature.

Description

technical field [0001] The invention relates to an adhesive, in particular to a dual responsive composite adhesive. Background technique [0002] With the development of science and technology and people's increasing attention to environmental protection, both industrial products and household daily necessities are developing towards an environment-friendly trend. Traditional solvent-based adhesives are gradually being replaced by water-based adhesives. , due to its non-toxic, non-combustible, non-polluting advantages, and the structural characteristics and excellent performance of polyurethane materials, there are more and more researches on the development and application of water-based polyurethane adhesives. The use of environmentally friendly materials offers broad application prospects. Waterborne polyurethane adhesive refers to the adhesive formed by dissolving or dispersing polyurethane in water. [0003] In addition to maintaining the advantages of polyurethane, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/04C09J133/14C09J103/10C09J11/08C09J11/00
CPCC08L2205/03C09J11/00C09J11/08C09J103/10C09J175/04C08L33/14C08L3/10C08L75/04
Inventor 李瑞清
Owner 常州勤行电子科技有限公司
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