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High-conductivity antibacterial formaldehyde-free adhesive as well as preparation method and application thereof

A kind of aldehyde adhesive, high conductivity technology, applied in the field of highly conductive antibacterial aldehyde-free adhesive and its preparation, can solve the problem of release, achieve high dry strength and water resistance bonding performance, solve non-renewable problems, stable sex high effect

Active Publication Date: 2021-08-13
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention overcomes the problem of formaldehyde released by traditional aldehyde adhesives in the prior art, and provides a highly conductive antibacterial formaldehyde-free adhesive and its preparation method and application to solve the deficiencies in the prior art, and its preparation process is simple , raw materials are readily available and easy to implement

Method used

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  • High-conductivity antibacterial formaldehyde-free adhesive as well as preparation method and application thereof

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preparation example Construction

[0034] The preparation method of the barium titanate@silver nanoparticles, comprising the following steps:

[0035] a: Weigh 0.3g of barium titanate nanoparticles and add 90ml of SnCl 2 ·H 2 In the mixed solution of O and HCl, the SnCl 2 ·H 2 The concentration of O in the mixed solution is 0.05M, and the concentration of the HCl in the mixed solution is 0.02M. After stirring evenly, ultrasonically disperse for 30min, stir and reflux the mixed solution for centrifugation, and wash the precipitate with deionized water and then dry it;

[0036] b: ultrasonically disperse the precipitate obtained in step a in 60 ml of 0.35M silver nitrate ammonia water, stir for 30 min, and then centrifuge, and wash the precipitate with deionized water to obtain a granular product;

[0037] c: take another 45ml of 0.03M silver nitrate ammonia water, add 45ml of 0.25% polyvinylpyrrolidone, ultrasonically disperse the granular product obtained in step c in the above mixed solution, add 2ml of for...

Embodiment 1

[0039] A preparation method of a highly conductive antibacterial formaldehyde-free adhesive, comprising the following steps:

[0040] 1) Weigh 6g neopentyl glycol diglycidyl ether, two parts of 6g soybean protein powder, 88g dispersion medium water, 0.25g barium titanate@silver nanoparticles;

[0041] 2) Add neopentyl glycol diglycidyl ether, a portion of soybean protein powder and barium titanate@silver nanoparticles into the dispersion medium water in turn, and ultrasonically disperse for 10 min after stirring uniformly;

[0042] 3) Add another part of soybean protein powder into the mixed solution in step 2), stir evenly, and prepare a highly conductive and antibacterial formaldehyde-free adhesive.

Embodiment 2

[0044] A preparation method of a highly conductive antibacterial formaldehyde-free adhesive, comprising the following steps:

[0045] 1) Weigh 6g neopentyl glycol diglycidyl ether, two parts of 6g soybean protein powder, 88g dispersion medium water, 0.5g barium titanate@silver nanoparticles;

[0046]2) Add neopentyl glycol diglycidyl ether, a portion of soybean protein powder and barium titanate@silver nanoparticles into the dispersion medium water in turn, and ultrasonically disperse for 10 min after stirring uniformly;

[0047] 3) Add another part of soybean protein powder into the mixed solution in step 2), stir evenly, and prepare a highly conductive and antibacterial formaldehyde-free adhesive.

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Abstract

The invention belongs to the technical field of high polymer materials, and provides a high-conductivity antibacterial formaldehyde-free adhesive, which is composed of the following raw materials in parts by weight: 12 parts of soybean protein powder, 6 parts of a cross-linking agent, 0.25-1 part of a modified reinforcing agent and 88 parts of dispersion medium water, the protein content in the soybean protein powder is greater than or equal to 90%, and the particle size is greater than 200 meshes. The modified reinforcing agent is barium titanate-coated silver nanoparticles, and the particle size of the barium titanate-coated silver nanoparticles is smaller than 300 nanometers. According to the invention, the modified core-shell structure barium titanate and silver nanoparticle reinforced and toughened soybean protein adhesive is adopted, active groups remained on the surfaces of barium titanate nanoparticles are beneficial to interaction between nanoparticles and protein, and the strength of the adhesive is improved; besides, the introduced silver ion shell layer has a certain inhibition effect on bacteria and fungi, the service life of the soybean protein adhesive can be prolonged, meanwhile, the barium titanate nanoparticles of the core layer are embedded, and the situation that the strength and toughness of the adhesive layer are reduced due to the agglomeration phenomenon is avoided.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to a highly conductive and antibacterial formaldehyde-free adhesive and a preparation method and application thereof. Background technique [0002] With the increase in the output of the wood-based panel industry, the amount and variety of wood adhesives are increasing. At present, the trialdehyde adhesives (urea-formaldehyde resin, phenolic resin and melamine-formaldehyde resin) in the wood industry adhesives in my country are very important. status and role. When trialdehyde adhesives are used in the production of various wood products, harmful gases such as free formaldehyde will be released during their production and use, resulting in the existence of toxic gases in the production workshop and living room, which seriously endangers people's health. At the same time, people's requirements for environmental protection have increased, and the world economy has also d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00C09J11/04C09J11/06
CPCC09J189/00C09J11/04C09J11/06C08K2201/011C08K2003/0806C08K3/24C08K3/08C08K5/1515
Inventor 韦妍蔷夏常磊李建章葛省波姜帅成
Owner NANJING FORESTRY UNIV
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