A kind of production method of anti-delamination anti-seepage vertical plywood

A production method and technology for plywood, which are used in the joining of wooden veneers, manufacturing tools, and wood processing utensils, etc., can solve the problems of hard glue layer, easy to mildew, poor water resistance, etc.

Active Publication Date: 2021-06-01
融安县大森林木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, biological adhesives have been developed and researched more, that is, adhesives based on animal protein or vegetable protein, but the adhesive layer after curing is often hard, poor water resistance, special odor, and easy to mildew

Method used

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  • A kind of production method of anti-delamination anti-seepage vertical plywood
  • A kind of production method of anti-delamination anti-seepage vertical plywood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of production method of anti-delamination anti-seepage water vertical plywood proposed by the present invention comprises the following steps:

[0036] S1. Dissolve 60g of aminated lignin in N,N-dimethylformamide, then add 1.5g of polyethylene glycol 200 and 0.5g of neopentyl glycol and stir to dissolve, then add 20g of isophorone diisocyanate Stir evenly, then dropwise add 1 g of bismuth laurate therein, and react at 40°C for 90 minutes to obtain the first material;

[0037] S2, dissolving 0.5g chitosan in concentration is 0.12mol / L hydrochloric acid, adjusts the pH value to 5, then adds 2g3,4-dihydroxyphenylacetic acid to obtain mixed solution; then 2g1-(3-dimethylaminopropyl Base)-3-ethylcarbodiimide hydrochloride and 1g N-hydroxysuccinimide were dissolved in ethanol aqueous solution, and then added dropwise to the mixed solution, reacted at 50°C for 12h, and maintained a pH value of 4.5 during the reaction -5.0, then placed in hydrochloric acid with a pH of ...

Embodiment 2

[0041] A kind of production method of anti-delamination anti-seepage water vertical plywood proposed by the present invention comprises the following steps:

[0042]S1. Dissolve 70g of aminated lignin in N,N-dimethylformamide, then add 0.5g of polyethylene glycol 200 and 1.5g of neopentyl glycol and stir to dissolve, then add 10g of isophorone diisocyanate Stir evenly, then dropwise add 1g of bismuth laurate therein, and react at 50°C for 60min to obtain the first material;

[0043] S2, dissolving 0.6g chitosan in 0.08mol / L hydrochloric acid, adjusting the pH value to 5, then adding 3g3,4-dihydroxyphenylacetic acid to obtain a mixed solution; then 1.5g1-(3-dimethylamino Propyl)-3-ethylcarbodiimide hydrochloride and 1.4g N-hydroxysuccinimide were dissolved in ethanol aqueous solution, then added dropwise to the mixed solution, reacted at 40°C for 9h, and maintained the pH value during the reaction 4.5-5.0, then placed in hydrochloric acid with a pH of 5 and dialyzed for 4 days...

Embodiment 3

[0047] A kind of production method of anti-delamination anti-seepage water vertical plywood proposed by the present invention comprises the following steps:

[0048] S1. Dissolve 63g of aminated lignin in N,N-dimethylformamide, then add 1.2g of polyethylene glycol 200 and 0.7g of neopentyl glycol and stir to dissolve, then add 17g of isophorone diisocyanate Stir evenly, then dropwise add 0.7g of bismuth laurate therein, and react at 47°C for 70min to obtain the first material;

[0049] S2, dissolving 0.58g chitosan in concentration is 0.09mol / L hydrochloric acid, adjust the pH value to 5, then add 2.7g3,4-dihydroxyphenylacetic acid to obtain a mixed solution; then 1.6g1-(3-dimethyl Aminopropyl)-3-ethylcarbodiimide hydrochloride and 1.3g N-hydroxysuccinimide were dissolved in ethanol aqueous solution, then added dropwise to the mixed solution, reacted at 42°C for 11h, and maintained the pH during the reaction The value is 4.5-5.0, then placed in hydrochloric acid with a pH of ...

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Abstract

The invention discloses a production method of an anti-delamination and anti-seepage water vertical plywood, comprising: dissolving aminated lignin in DMF, adding PEG200 and neopentyl glycol, stirring and dissolving, and adding isophorone diisocyanate Stir evenly, then add bismuth laurate dropwise to it to react to obtain the first material; dissolve chitosan in hydrochloric acid, and then add 3,4-dihydroxyphenylacetic acid to obtain a mixed solution; then dissolve EDC / NHS in ethanol aqueous solution , then added dropwise into the mixed solution for reaction, then dialyzed in hydrochloric acid with a pH of 5, and freeze-dried to obtain the second material; adding sesame protein into the urea aqueous solution and stirring, then adding zinc oxide and stirring to obtain the third material; The first material and the second material are added to the third material and mixed evenly, then a strong oxidant is added to mix evenly, and coated on the surface of the veneer, and then adjacent veneers are glued, stacked, multi-layered, and hot-pressed to obtain anti-delamination and anti-corrosion Water seepage vertical plywood.

Description

technical field [0001] The invention relates to the technical field of boards, in particular to a production method of a delamination-proof and water-seepage-proof vertical plywood. Background technique [0002] Plywood is an important type of wood-based panels. Due to the characteristics of small deformation, large format, inconvenient construction, not easy to warp, and high tensile strength of transverse grains, plywood is widely used in furniture, carriages, shipbuilding, military industry, packaging and other industrial sectors. Get widely used. [0003] Plywood is made of multi-layer veneers pressed by glue, so it contains a lot of glue, which leads to poor heat resistance and waterproof performance. After the plywood is damp, it will cause it to delaminate or even rot, which makes the board unusable. Currently, it is used in other markets. The technology of applying waterproof paint on the surface is used to improve the water resistance, but after a period of time, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27D1/04B27D1/08
CPCB27D1/04B27D1/08
Inventor 李庭欢李琴
Owner 融安县大森林木业有限公司
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