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Modified flame-retardant oriented strand board and preparation method thereof

An oriented strand board and modified technology, applied in the field of wood science, can solve the problems of poor flame retardant stability, difficult flame retardant grade, poor flame retardant effect, etc., to avoid secondary processing equipment, good flame retardant effect, The effect of improving flame retardant properties

Inactive Publication Date: 2017-11-24
天津北新木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If only the surface fire protection treatment is used, the flame retardant cannot penetrate into the core layer of the oriented strand board. Because the flame retardant does not evenly wrap the core layer of wood chips, the flame retardant effect is poor, and the product’s flame retardant stability is not good. It is difficult to truly Reach the B1-B flame retardant grade of GB8624-2012

Method used

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  • Modified flame-retardant oriented strand board and preparation method thereof

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Effect test

Embodiment 1

[0039] A modified flame-retardant oriented strand board, comprising the following raw materials in mass percentage:

[0040] Silica 4%;

[0041] Ammonium phosphate 15%;

[0042] Wood shavings 55%;

[0043] Adhesive 4%;

[0044] Paraffin 1%.

[0045] A preparation method of a modified flame-retardant oriented strand board adopts the above-mentioned raw material ratio, comprising the steps of:

[0046] The peeled logs are processed into wood flakes by the knife ring type long wood planer, and the wood flakes are sent to the flake dryer through a mechanical transporter for drying, so that the moisture content of the dried wood flakes is 3-7 %, the dried wood flakes are screened by a screening machine, and the qualified wood flakes are sent to the core and surface wood flake bins by the mechanical transporter, and the average length is about 80mm, the width is 25mm, and the thickness of the surface layer is 0.6mm. Wood chips and core wood chips with an average length of about...

Embodiment 2

[0049] A modified flame-retardant oriented strand board, comprising the following raw materials in mass percentage:

[0050] Silica 5%;

[0051] Ammonium phosphate and ammonium borate 20%;

[0052] Wood shavings 60%;

[0053] Isocyanate adhesive 4%;

[0054] Paraffin 3%.

[0055] Among them, the mass ratio of ammonium phosphate and ammonium borate is 1:1

[0056] A preparation method of a modified flame-retardant oriented strand board adopts the above-mentioned raw material ratio, comprising the steps of:

[0057] The peeled logs are processed into wood flakes by the knife ring type long wood planer, and the wood flakes are sent to the flake dryer through a mechanical transporter for drying, so that the moisture content of the dried wood flakes is 3-7 %, wherein, the shape of the wood planer is: about 60-150mm in length, 20-30mm in width, and 0.60-0.70mm in thickness. The dried wood flakes are screened by the screening machine, and the qualified wood flakes are sent to t...

Embodiment 3

[0060] The method is the same as in Example 1, only the type of adhesive is changed, and the "isocyanate adhesive" in Example 1 is changed to "isocyanate adhesive and phenolic resin adhesive, and the mass ratio of isocyanate adhesive and phenolic resin adhesive is 2:3" modified flame retardant oriented strand board.

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Abstract

The invention discloses a modified flame-retardant oriented strand board. The modified flame-retardant oriented strand board comprises, by weight, 1-5% of nano silicon dioxide, 10-30% of nitrogen and phosphorus flame retardants, 43-79.5% of wood flakes, 2.5-22% of adhesive and 0.5-3% of an auxiliary agent. The invention further discloses a preparation method of the modified flame-retardant oriented strand board. Compared with a common secondary processing method, a silicon dioxide modified flame retardant and the auxiliary agent are added into a primary shaping technology of the oriented strand board, so that the prepared oriented strand board is better in flame retardant effect and higher in flame retardancy stability. According to the flame-retardant oriented strand board prepared by adopting the preparation method, only simple spraying equipment needs to be additionally arranged in a sizing technology, the device transformation cost is low, a secondary processing device is avoided, and the cost is saved.

Description

technical field [0001] The invention belongs to the field of wood science and technology, and specifically relates to a modified flame-retardant oriented particle board and a preparation method thereof. Background technique [0002] As the problem of global warming becomes increasingly prominent and extreme weather occurs frequently, the low-carbon economy with the theme of "low emissions, low pollution, and low energy consumption" is increasingly recognized and respected by people. Under such background conditions, the wood industry is playing an increasingly important role in developing a low-carbon economy and coping with climate change by taking advantage of its inherent "green", "environmental protection" and "clean" characteristics. Wood and wood products have a good carbon sequestration effect. As long as it does not rot or burn, the carbon sequestration function of wood and wood products will continue for a long time and stably. Some carbon fixation time can reach ...

Claims

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Application Information

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IPC IPC(8): B27D1/08B27N3/02B27N1/00B27N3/08B27K3/02B27K3/00B27K3/32B32B37/06B32B37/10B32B37/12
CPCB27D1/08B27K3/007B27K3/0228B27K3/32B27K2200/15B27K2240/30B27N1/00B27N3/02B27N3/08B32B37/06B32B37/10B32B37/12
Inventor 李建立张方文李银凤
Owner 天津北新木业有限公司
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