Environment-friendly type shaving board and producing method thereof

A production method and particleboard technology, which can be applied to other household appliances, pretreatment of molding materials, household components, etc., can solve the problems of particleboard water resistance, poor heat resistance, high product cost and high raw material requirements, and achieve low cost , simple production method and excellent performance

Inactive Publication Date: 2008-09-03
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the recycled board made of these aldehyde resin binders has formaldehyde escape during production and use, which pollutes the air, and has high requirements for raw materials, requiring pre-drying of woody and other biomass raw materials, and the water content is strictly controlled at 2 Within %-3%
In addition, the particleboard made of adh

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0017] Example 1

[0018] A. Drying and screening of bamboo powder so that the particle size of bamboo powder is in the range of 20-60 mesh, take 900 parts by weight and feed it into the silo;

[0019] B. The bamboo powder is liquefied and degraded in polyethylene glycol solvent at 130°C with sulfuric acid as a catalyst for 60 minutes. After cooling, magnesium oxide is added to neutralize the pH value to neutral, and after stirring, the bamboo powder polyether ester multi-component is obtained alcohol.

[0020] C. Mix 60 parts by weight of bamboo powder polyether ester polyol and 25 parts by weight of polymethylene polyphenyl polyisocyanate (PAPI) to form a glue, spray it directly on the surface of the bamboo powder and make it penetrate into the bamboo powder;

[0021] D. Paving and hot pressing. The bamboo powder mixed with the adhesive is molded at a high temperature of 120°C for 20 minutes, reacted, solidified, molded and demolded, and then sawed and sanded to make a particle ...

Example Embodiment

[0023] Example 2

[0024] A. Drying and screening of bamboo powder, so that the particle size of bamboo powder is in the range of 40-80 mesh, take 1,100 parts by weight and feed it into the bin;

[0025] B. The bagasse is liquefied and degraded in ethylene glycol solvent for 90 minutes at 150℃ with sulfuric acid as a catalyst. After cooling, magnesium oxide is added to neutralize the pH value to neutral, and after stirring uniformly, bagasse polyether ester polyol is obtained. .

[0026] C. Mix 70 parts by weight of bagasse polyether ester polyol and 30 parts by weight of toluene diisocyanate (TDI) to form a glue, spray it directly on the surface of the bamboo powder and make it penetrate into the bamboo powder;

[0027] D. Pavement and hot pressing. The bamboo powder mixed with the adhesive is molded at a high temperature of 130°C for 15 minutes, reacted, solidified, molded and demolded, and then sawed and sanded to make a particle board.

[0028] After measurement, the static be...

Example Embodiment

[0029] Example 3

[0030] A. Drying and screening of bagasse to make the bagasse particle size in the range of 40-80 mesh, take 1000 parts by weight and feed it into the bin;

[0031] B. The bagasse is liquefied and degraded in polyethylene glycol solvent at 150°C with sulfuric acid as a catalyst for 60 minutes. After cooling, magnesium oxide is added to neutralize the pH value to neutral, and after stirring, the bagasse polyether ester multi-component is obtained. alcohol.

[0032] C. Mix 60 parts by weight of bagasse polyether ester polyol and 30 parts by weight of polymethylene polyphenyl polyisocyanate (PAPI) to form a gel, spray it directly on the surface of bagasse and make it penetrate into the inside;

[0033] D. Pavement and hot pressing. The bagasse mixed with the adhesive is molded at a high temperature of 140°C for 10 minutes, reacted, solidified, molded and demolded, and then sawed and sanded to make a particle board.

[0034] After measurement, the static bending str...

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PUM

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Abstract

The invention discloses an environment-friendly shaving board and a manufacture method thereof. The environment-friendly shaving board comprises plant fiber materials 850 to 1,100 weight parts, plant fiber poly(ether-ester) polyol 60 to 80 weight parts and isocyanate 25 to 45 weight parts. The manufacture method comprises the following steps: mixing plant fiber poly(ether-ester) polyol with isocyanate to obtain an adhesive; directly spraying the adhesive on the surface of the plant fiber material, and permeating into the plant fiber material, spreading, hot-pressing, mold-pressing the plant fiber material mixed with the adhesive at high temperature, reacting, curing, molding, de-molding, sawing, and sanding to obtain the shaving board. The shaving board is free of toxic and harmful substances such as free formaldehyde, and is an environment-friendly green building material. The shaving board has low cost, simple manufacture method and excellent performance.

Description

technical field [0001] The invention relates to the field of building materials, in particular to an environment-friendly particleboard and a production method thereof. Background technique [0002] Particleboard is an important board type in wood-based panels. Its raw materials can be broken wood, shavings, sawdust in wood processing, and scraps of agricultural and sideline products such as bamboo, straw, and wheat straw. The adhesives used in wood regeneration products such as early particle boards belong to the "three aldehyde" adhesives, namely urea-formaldehyde resin (UF), phenolic resin (PF), and melamine-formaldehyde resin (MF) adhesives. However, the recycled boards made of these aldehyde resin binders have formaldehyde escaping during production and use, which pollutes the air, and has high requirements for raw materials, requiring pre-drying of woody and other biomass raw materials, and the water content is strictly controlled at 2 %-3% ​​or less. In addition, th...

Claims

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Application Information

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IPC IPC(8): B27N3/04B27N1/00B27N1/02B27N3/08
Inventor 廖兵杨小旭庞浩颜永斌董翔
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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