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Production method of vertical plywood capable of preventing delamination and seepage

A production method and technology of plywood, applied in the jointing of wooden veneers, wood processing equipment, manufacturing tools, etc., can solve the problems of hard glue layer, poor water resistance, easy mildew, etc., to prevent delamination and improve antibacterial performance , the effect of preventing the penetration of water

Active Publication Date: 2019-07-23
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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  • Production method of vertical plywood capable of preventing delamination and seepage
  • Production method of vertical plywood capable of preventing delamination and seepage

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 vertical plywood capable of preventing delamination and seepage. The production method comprises the steps that aminated lignin is dissolved in DMF, PEG200 and neopentyl glycol are added for stirring and dissolving, isophorone diisocyanate is then added for stirring uniformly, then bismuth laurate is dropwise added into the mixture, and a first material is obtained by reacting; chitosan is dissolved in hydrochloric acid; 3,4-dihydroxyphenylacetic acid is added to obtain a mixed solution; EDC / NHS is dissolved in an ethanol aqueous solution and thendropwise added into the mixed solution for reaction, dialyzing is carried out in hydrochloric acid with pH of 5, and freeze-drying is carried out to obtain a second material; sesame protein is addedinto a urea aqueous solution for stirring, and then zinc oxide is added for stirring to obtain a third material; and the first material and the second material are added into the third material to beuniformly mixed, then a strong oxidant is added to be uniformly mixed, the surface of a single plate is coated with the mixture, then adjacent single plates are glued and stacked, a plurality of layers of plate blanks are assembled, and hot pressing is carried out to obtain the vertical plywood capable of preventing delamination and seepage.

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 Applications(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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