Manufacturing method of environment-friendly antiflaming middle and high density fiberboard

A high-density fiberboard and manufacturing method technology, applied in the field of fiberboard manufacturing, can solve the problems of high formaldehyde mole, carcinogenic effect, complex manufacturing process, etc., and achieve the effects of high added value, low production cost, and wide sources

Active Publication Date: 2010-07-28
ZHEJIANG FORESTRY ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, medium and high-density fiberboard is still a kind of wood material, mainly composed of organic combustibles, which is a combustible material, which is easy to cause fire and has potential safety hazards.
Existing surveys show that formaldehyde ranks first among the main pollutants in the indoor environment. Formaldehyde has carcinogenic effects on the human body. However, general medium and high-density fiberboard products release a large amount of formaldehyde, which is not conducive to human health.
Another type of environmentally friendly flame-retardant medium and high-density fiberboard mainly has the following problems: 1. Most fiberboards are made of flame-retardant materials in th

Method used

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  • Manufacturing method of environment-friendly antiflaming middle and high density fiberboard
  • Manufacturing method of environment-friendly antiflaming middle and high density fiberboard

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Manufacturing method of environmentally friendly flame-retardant medium density fiberboard with a format of 1220×2440×10mm:

[0034] 1. Fiber preparation: use wood or non-wood materials such as waste wood, branch wood, bark, and secondary small-diameter wood as raw materials, and prepare the required fiber after cutting, planing or chipping, sorting, washing, softening, and heat grinding. of fiber.

[0035] 2. Flame retardant treatment: use the pipeline sizing method, use a separate metering system to send the flame retardant with a pH value of 7 to 8 into the discharge valve of the heat refiner, and the amount of the flame retardant is 13% of the dry fiber weight , The flame retardant is a liquid with a concentration of 50%.

[0036] 3. Sizing and waterproofing agent: add curing agent to urea-formaldehyde resin to adjust the glue. The curing agent is 10% oxalic acid solution, and the amount added is 1% of the weight of the glue; use the pipeline sizing method and use ...

Embodiment 2

[0042] Manufacturing method of environmentally friendly flame-retardant high-density fiberboard with a format of 1220×2440×15mm:

[0043] 1. Fiber preparation: use wood or non-wood materials such as waste wood, branch wood, bark, and secondary small-diameter wood as raw materials, and prepare the required fiber after cutting, planing or chipping, sorting, washing, softening, and heat grinding. fiber;

[0044] 2. Flame retardant treatment: use the pipeline sizing method, use a separate metering system to send the flame retardant with a pH value of 7 to 8 into the discharge valve of the heat refiner, and the amount of the flame retardant is 15% of the dry fiber weight , The flame retardant is a liquid with a concentration of 50%.

[0045] 3. Sizing and waterproofing agent: add curing agent to urea-formaldehyde resin to adjust the glue. The curing agent is 10% oxalic acid solution, and the amount added is 1% of the weight of the glue; use the pipeline sizing method and use two s...

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PUM

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Abstract

The invention relates to a manufacturing method of an environment-friendly antiflaming middle and high density fibreboard, solving the problem of high fibreboard production cost and poor fire resistance and environmental protection in the prior art. The invention comprises the following technical steps: hot grinding wooden or non-wooden materials into fibre; applying expansion N-P fire retardant of which the solid content is 35-60% and the pH value is 7-8 for fire retardant treatment, wherein the application amount of the fire retardant accounts for 10-15 wt% of absolute dry fibre; applying urea resin, waterproof agent and curing agent, wherein the urea resin application amount accounts for 10-14 wt% of the absolute dry fibre, the waterproof agent application amount accounts for 1-3 wt% of the absolute dry fibre, and the curing agent application amount accounts for 0.5-2 wt% of urea resin; then, drying, paving, prepressing, hot-pressing, cutting edges, sanding, separating and the like to obtain the fibreboard after inspection. The invention has simple production technology and low cost, the fibreboard not only has favorable physical-mechanical property but also has antiflaming and environment-friendly characteristics.

Description

technical field [0001] The invention belongs to the fiberboard manufacturing technology in the wood-based panel industry, and in particular relates to an environment-friendly flame-retardant medium and high-density fiberboard manufacturing method. technical background [0002] Medium and high-density fiberboard is a high-grade wooden board, which can be widely used in furniture manufacturing, building interior decoration, vehicle and ship partitions, and audio and musical instrument materials. However, medium and high-density fiberboard is still a kind of wood material, mainly composed of organic combustibles, which is a combustible material, which is easy to cause fire and has potential safety hazards. Existing surveys show that formaldehyde ranks first among the main pollutants in the indoor environment. Formaldehyde has carcinogenic effects on the human body. However, general medium and high-density fiberboard products release a large amount of formaldehyde, which is not ...

Claims

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Application Information

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IPC IPC(8): B27N3/04B27K1/00B27N3/12C09K21/14
Inventor 张建余丽萍付跃进汪奎宏李琴于海霞
Owner ZHEJIANG FORESTRY ACAD
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