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High-bonding-strength environment-friendly supermolecular physical gel adhesive and preparation method thereof

A bonding strength, molecular physics technology, applied in non-polymer adhesive additives, graft polymer adhesives, adhesive additives, etc., can solve problems such as health threats, air and water pollution, and achieve high adhesion The effect of strength, simple and efficient formation process, and simple preparation method

Active Publication Date: 2018-11-20
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some existing water-based adhesives, such as the most commonly used adhesives in the wood-based panel industry, phenolic adhesives and urea-formaldehyde adhesives, although low in cost, high in bonding strength, and widely used, these adhesives not only have air, Water pollution and other problems, in the process of use, free formaldehyde and phenol and other carcinogens will be released, which poses a serious threat to the environment and human health

Method used

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  • High-bonding-strength environment-friendly supermolecular physical gel adhesive and preparation method thereof
  • High-bonding-strength environment-friendly supermolecular physical gel adhesive and preparation method thereof
  • High-bonding-strength environment-friendly supermolecular physical gel adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] a. Preparation of pre-polymerization solution: Dissolve 100 mg of cellulose nanocrystals (with a particle size of about 120 nm) in 15 mL of deionized water, add dimethyl acrylamide monomer and acrylic acid monomer at a molar ratio of 1:1, and stir for 20 minutes to The monomer is completely dissolved to form a pre-polymerization solution with a monomer concentration of 12% by weight;

[0020] b. Preparation of supramolecular physical gel: dissolve the initiator azobisisobutyronitrile in deionized water, and ultrasonicate for 10 minutes until it is completely dissolved into a solution with a concentration of 10mg / mL. Take 1mL of this solution and add it to 10mL of the preform obtained in step a. In the polymerization solution; finally add the catalyst N-ethylmorpholine 30mg. Stir for 5 minutes, then stop stirring. After standing for 20 hours, a high-strength, environmentally-friendly supramolecular physical gel adhesive can be obtained.

[0021] Bonding of the sample: ...

Embodiment 2

[0024] a. Preparation of pre-polymerization solution: Dissolve 250mg of nano-carbon dots (particle size about 50nm) in 20mL of deionized water, add monomer acrylamide and methacrylic acid at a molar ratio of 1:4, and stir for 20 minutes until completely dissolved , dubbed the monomer concentration and the pre-polymerization solution of 14wt%.

[0025] b. Preparation of supramolecular physical gel: Dissolve the initiator cerium ammonium nitrate in deionized water, ultrasonicate for 10 minutes until completely dissolved into a solution with a concentration of 7mg / mL, take 2mL of this solution and add it to 15mL of the pre-polymerization obtained in step a In the solution, 15 mg of catalyst sodium persulfate was finally added. Stir for 3 minutes, then stop stirring. After standing for 10 hours, a high-strength, environmentally-friendly supramolecular physical gel adhesive can be obtained.

[0026] Bonding of the samples: The prepared gel adhesive was evenly applied to both side...

Embodiment 3

[0029] a. Preparation of pre-polymerization solution: Dissolve 300mg of montmorillonite and cellulose nanocrystals (mass ratio 1:1, particle size is about 30nm and 150nm respectively) in 40mL deionized water, add hydroxyethyl methacrylate monomer , stirred for 20 minutes until the monomers were completely dissolved, and a pre-polymerization solution with a monomer concentration of 8.5 wt% was prepared;

[0030] b. Preparation of supramolecular physical gel: Dissolve the initiator ammonium persulfate in deionized water, ultrasonicate for 10 minutes, until completely dissolved into a solution with a concentration of 13mg / mL, take 3mL of this solution and add it to 14mL of the prepolymerization obtained in step a solution; finally add the catalyst N, N-dimethylcyclohexylamine 18mg. Stir for 8 minutes, stop stirring. After standing for 15 hours, a high-strength, environmentally-friendly supramolecular physical gel adhesive can be obtained.

[0031] Bonding of the sample: Apply t...

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Abstract

The invention relates to a high-bonding-strength environment-friendly supermolecular physical gel adhesive and a preparation method thereof, and belongs to the technical field of preparation of a water-based adhesive. The preparation method comprises the following steps: dissolving nanoparticles into water, stirring until the nanoparticles dissolve completely, adding one or two monomers and stirring until the monomers dissolve completely; adding an initiator into deionized water, performing ultrasonic treatment until the initiator dissolves completely, and adding an initiator solution into a prepolymerization solution containing the nanoparticles and the monomers; adding a catalyst, stirring and allowing standing still at room temperature to obtain the gel adhesive. The gel adhesive is formed on the basis of multiple weak interaction hydrogen bonds among polymers, chain entanglement as well as the physical adsorption effect between the nanoparticles and the polymers; the forming process is simple and efficient; organic solvent do not need to be added in the preparation process; the adhesive does not have peculiar smell and is non-toxic and environmentally friendly; the use raw materials are the common chemical raw materials and are low in price. The adhesive is applied to adhesion of various materials such as optical glass, metal, wood and plastic, and has high bonding strength.

Description

technical field [0001] The invention belongs to the technical field of water-based adhesives, and in particular relates to a high-gluing-strength environmental-friendly supramolecular physical gel adhesive and a preparation method thereof. Background technique [0002] Water-based adhesives are adhesives made from film-forming materials that can be dispersed or dissolved in water, and are also often called water-based adhesives. Among them, film-forming materials include organic polymers, animal glue, starch, dextrin, serum albumin, albumin, methyl cellulose and polyvinyl alcohol, etc., and some soluble intermediates of phenolic and aldehyde resins also belong to such. Some existing water-based adhesives, such as the most commonly used adhesives in the wood-based panel industry, phenolic adhesives and urea-formaldehyde adhesives, although low in cost, high in bonding strength, and widely used, these adhesives not only have air, Water pollution and other problems, in the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/02C09J133/02C09J11/04C08F251/02C08F220/06C08F220/56C08F220/54C08F220/20C08F2/44C08J3/075
CPCC08F2/44C08F220/06C08F251/02C08J3/075C08J2333/02C08J2351/02C08K3/04C08K3/346C08K2201/011C09J11/04C09J133/02C09J151/02C08F220/54C08F220/56C08F220/20
Inventor 孙俊奇房旭牛文文
Owner JILIN UNIV
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