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Manufacture method of environment-friendly plywood

A plywood, environmental protection technology, applied in the field of plywood, can solve the problems of slow release, affecting the health of residents, indoor air pollution, etc., to achieve the effect of improving bond strength, no formaldehyde release, and improving mechanical properties

Inactive Publication Date: 2018-03-09
吴义峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: Aiming at the problem that formaldehyde is easily produced in the urea-formaldehyde glue used in plywood, the plywood will slowly release formaldehyde during use, causing indoor air pollution and affecting the health of residents. The present invention provides A kind of preparation method of environment-friendly plywood

Method used

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  • Manufacture method of environment-friendly plywood

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preparation example Construction

[0019] Preparation of soaking solution: Mix cellulase, pepsin and 0.3mol / L phosphoric acid solution at a mass ratio of 1:1 to 2:7 to obtain the soaking solution.

[0020] Defatted soy flour was purchased from Henan Hetian Food Additive Co., Ltd.

[0021] Water-based polyurethane was purchased from Dongwan City Creed Environmental Protection Material Co., Ltd.

[0022] The preparation method of composite glue comprises the steps:

[0023] A. According to the mass ratio of 1:3, put defatted soybean powder and 0.3mol / L ammonium nitrate solution into a container, and heat at 90°C for 30-35min;

[0024] B. After heating, add water-based polyurethane in an amount of 6-9% of the mass of defatted soybean powder, heat up to 95-100°C, then add lithium iodide, keep warm for 1-3 hours, cool to room temperature, discharge, and spray Drying, collecting dried matter;

[0025] C. In parts by weight, take 70-80 parts of 0.9mol / L sodium hydroxide solution, 30-35 parts of dry matter, 15-18 pa...

Embodiment 1

[0031] Preparation of soaking solution: Mix cellulase, pepsin and 0.3mol / L phosphoric acid solution at a mass ratio of 1:1:7 to obtain the soaking solution.

[0032] Defatted soy flour was purchased from Henan Hetian Food Additive Co., Ltd.

[0033] The preparation method of composite glue comprises the steps:

[0034] A. According to the mass ratio of 1:3, put defatted soybean powder and 0.3mol / L ammonium nitrate solution into a container, and heat at 90°C for 30min;

[0035] B. After heating, add water-based polyurethane in an amount of 6% of the mass of defatted soybean powder, heat up to 95°C, then add lithium iodide, keep warm for 1h, cool to room temperature, discharge, spray dry, and collect dry matter;

[0036] C. In parts by weight, take 70 parts of 0.9mol / L sodium hydroxide solution, 30 parts of dry matter, 15 parts of hexamethyldisilane, 12 parts of methacryloyloxymethyl tri(trimethylsiloxane Base) silane, 6 parts of hydroxyacetamide and 3 parts of platinum oxide,...

Embodiment 2

[0042] Preparation of soaking solution: Mix cellulase, pepsin and 0.3mol / L phosphoric acid solution at a mass ratio of 1:1:7 to obtain the soaking solution.

[0043] Defatted soy flour was purchased from Henan Hetian Food Additive Co., Ltd.

[0044] The preparation method of composite glue comprises the steps:

[0045] A. According to the mass ratio of 1:3, put defatted soybean powder and 0.3mol / L ammonium nitrate solution into a container, and heat at 90°C for 30min;

[0046] B. After heating, add water-based polyurethane in an amount of 6% of the mass of defatted soybean powder, heat up to 95°C, then add lithium iodide, keep warm for 1h, cool to room temperature, discharge, spray dry, and collect dry matter;

[0047]C. In parts by weight, take 70 parts of 0.9mol / L sodium hydroxide solution, 30 parts of dry matter, 15 parts of hexamethyldisilane, 12 parts of methacryloyloxymethyl tri(trimethylsiloxane Base) silane, 6 parts of hydroxyacetamide and 3 parts of platinum oxide, ...

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Abstract

The invention relates to the technical field of plywood, in particular to a manufacture method of environment-friendly plywood. The manufacture method has the advantages that surfaces of veneers are subjected to enzymolysis through soaking liquid, part of organic matters, such as celluloses, of the surfaces of the veneers are degraded, and active groups of the surfaces of the veneers are increased; degreased soybean meal and waterborne polyurethane are subjected to compound modification to improve mechanical property and viscosity of the degreased soybean meal, and mixing and compounding withan organosilicone monomer is then performed; the organosilicone monomer hexamethyldisilane is subjected to pyrolysis under the action of hydroxyacetamide and platinic oxide during hot pressing, is polymerized with methacryloxymethyl tris(trimethylsiloxy)silane and is compounded with the modified degreased soybean meal to improve bonding strength; silicon oxygen bonds are compounded with the activegroups on the veneers to further improve bonding strength; during preparation of the plywood, no formaldehyde is released, and safety and environment protection are achieved.

Description

technical field [0001] The invention relates to the technical field of plywood, in particular to a preparation method of an environment-friendly plywood. Background technique [0002] With the improvement of living standards, people have higher and higher requirements for indoor air quality. Most of the home decoration boards and furniture boards come from three major boards, namely fiberboard, particle board and plywood. They are made of wood (fibre, shavings or veneer) mixed and pressed with urea-formaldehyde glue. [0003] Plywood is one of the commonly used materials for furniture and is a kind of wood-based panel. A group of veneers are usually assembled and glued together according to the direction of the wood grain of adjacent layers perpendicular to each other. Usually, the surface board and inner layer board are symmetrically arranged on both sides of the center layer or core. The slab made of the veneer after gluing is criss-crossed according to the direction of...

Claims

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Application Information

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IPC IPC(8): B27K3/52B27K3/02B27D1/08C09J189/00C09J175/04C09J11/06
CPCB27D1/08B27K3/02B27K3/52C09J11/06C09J189/00C08L75/04C08K5/5425C08K5/5403
Inventor 吴义峰刘芳尹凯欣
Owner 吴义峰
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