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Processing method of environment-friendly polyurethane adhesive

A technology of polyurethane adhesives and processing methods, applied in the field of polymers, can solve problems such as the need to improve the bonding strength of adhesives, the difficulty of recycling materials, and the impact on the health of operators, achieving strong reusability and easy promotion Application, with reasonable effect

Inactive Publication Date: 2019-11-22
含山县金中环装饰材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the modified phenolic resin has an impact on the health of the operator during preparation, and the overall cost is still high. It is not easy to degrade when used in the bonding treatment of paper, etc., which makes the material difficult to recycle, and the adhesive made by the above method The adhesive strength of the agent still needs to be improved

Method used

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  • Processing method of environment-friendly polyurethane adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A processing method of an environmentally friendly polyurethane adhesive, comprising the steps of:

[0032] (1) Preparation of compound additives:

[0033] a. First mix cerium nitrate, aluminum nitrate, and deionized water into the mixing tank according to the weight ratio of 1:0.5:45. After stirring for 30 minutes, add a layer of 8% of the total mass of deionized water into the mixing tank. Analyze the silica gel, then filter after stirring for 8 hours, put the filtered silica gel into a muffle furnace, heat and roast for 3 hours, and then take it out to obtain loaded silica for subsequent use;

[0034] b. Take the following materials in corresponding parts by weight: 25 parts of tea polyphenols, 55 parts of ethyl acetate, 15 parts of acetic anhydride, 3 parts of disodium ethylenediaminetetraacetic acid, 2 parts of loaded silicon dioxide obtained from operation a; then Put all the above substances into the reaction kettle together, heat to keep the temperature in the ...

Embodiment 2

[0053] A processing method of an environmentally friendly polyurethane adhesive, comprising the steps of:

[0054] (1) Preparation of compound additives:

[0055] a. First mix cerium nitrate, aluminum nitrate, and deionized water into the mixing tank according to the weight ratio of 1:0.7:48. After stirring for 33 minutes, add a layer of 9% of the total mass of deionized water into the mixing tank. Analyze the silica gel, then filter after stirring for 9 hours, put the filtered silica gel into a muffle furnace, heat and roast for 3.5 hours, then take it out to obtain loaded silica for subsequent use;

[0056] b. Take the following materials in corresponding parts by weight: 27 parts of tea polyphenols, 56 parts of ethyl acetate, 17 parts of acetic anhydride, 5 parts of disodium ethylenediaminetetraacetic acid, 4 parts of supported silicon dioxide obtained from operation a; Put all the above substances into the reaction kettle together, heat to keep the temperature in the reac...

Embodiment 3

[0075] A processing method of an environmentally friendly polyurethane adhesive, comprising the steps of:

[0076] (1) Preparation of compound additives:

[0077] a. First mix cerium nitrate, aluminum nitrate, and deionized water into the mixing tank according to the weight ratio of 1:0.8:50. After stirring for 35 minutes, add a layer of 10% of the total mass of deionized water into the mixing tank. Analyze the silica gel, then filter after stirring for 10 hours, put the filtered silica gel into a muffle furnace, heat and roast for 4 hours, then take it out to obtain loaded silica for subsequent use;

[0078] b. Take the following materials in corresponding parts by weight: 30 parts of tea polyphenols, 60 parts of ethyl acetate, 18 parts of acetic anhydride, 6 parts of disodium ethylenediaminetetraacetic acid, 5 parts of supported silica obtained from operation a; then Put all the above substances into the reaction kettle together, heat to keep the temperature in the reaction...

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Abstract

The invention discloses a processing method of an environment-friendly polyurethane adhesive. The processing method comprises the following steps: (1) preparing a composite additive; (2) preparing a polyurethane prepolymer; and (3) preparing a finished product adhesive. The preparation method of the polyurethane adhesive is simple in overall process, reasonable in step matching and convenient to apply and popularize, and the prepared adhesive is high in overall viscosity, resistant to water, good in toughness, degradable, high in reusability, safe, environmentally friendly and extremely high in market competitiveness and production benefit.

Description

technical field [0001] The invention belongs to the field of macromolecules, and in particular relates to a processing method of an environmentally friendly polyurethane adhesive. Background technique [0002] Polyurethane adhesives refer to adhesives containing carbamate groups (-NHCOO-) or isocyanate groups (-NCO) in the molecular chain. It is widely used in aerospace, electronic and electrical, metal materials, packaging materials, shipbuilding, textiles, rubber, plastics, ceramics, construction, automobiles and other industries. [0003] Today, as environmental problems and awareness of environmental protection are increasing, the research and development of environmentally friendly adhesives is increasingly valued. Among them, environmentally friendly polyurethane adhesives are characterized by energy saving, high bonding strength, excellent comprehensive performance, and wide application. The benefits are quickly and widely recognized. Environmentally friendly polyur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/02C09J4/06C09J11/04C09J11/06C09J11/08
CPCC09J4/06C09J11/04C09J11/06C09J11/08
Inventor 郭坤
Owner 含山县金中环装饰材料有限公司
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