Composite flame retardant and method for preparation of flame retardant fiber board from the same

A technology of composite flame retardant and flame retardant fiber, which is applied in the field of preparation of flame retardant fiberboard and composite flame retardant, can solve the problems of large filling amount of inorganic flame retardant, low flame retardant efficiency, unstable flame retardant performance, etc., and achieves Smoke suppression, environmental friendliness, improved flame retardant performance, good flame retardant effect

Active Publication Date: 2015-12-09
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The development of wood inorganic flame retardants is the earliest. It has the advantages of good thermal stability, non-volatility, no precipitation, non-toxicity, no corrosive gas, low price, and high safety performance. Large flame retardant efficiency is low, high filling content is high and it is easy to affect the performance of polymer materials
[0005] Inorganic flame retardants include four categories: phosphorus-nitrogen compounds, halogens and their compounds, boron compounds and metal hydroxides, but each has its own advantages and disadvantages: (1) phosphorus-nitrogen compounds: including phosphate and polyphosphate, such as phosphoric acid Ammonium dihydrogen (MAP), ammonium polyphosphate, etc., among which ammonium dihydrogen phosphate is the most widely used phosphorus-nitrogen flame retardant
The disadvantage of

Method used

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  • Composite flame retardant and method for preparation of flame retardant fiber board from the same
  • Composite flame retardant and method for preparation of flame retardant fiber board from the same
  • Composite flame retardant and method for preparation of flame retardant fiber board from the same

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] Example 1: Setting of compound flame retardant ratio scheme

[0035] In this test, the flame retardant addition amount was kept at 13%, and the L9 (34) orthogonal test was performed with the percentage of aluminum hydroxide, borax, and sodium silicate in the fiber content of the fiberboard as three test factors. Among them, the additive amount of aluminum hydroxide takes 3 levels: 4%, 5%, 6%; Borax takes 3 levels: 3%, 4%, 5%; Sodium silicate takes 3 levels: 2%, 3%, 4%. In order to avoid systematic errors caused by human factors, the factor level values ​​are not arranged from small to large or from large to small, but the three levels of each factor are "randomized".

[0036] Table 1 Factor level table

[0037]

[0038]

[0039] Table 2 Header design

[0040]

[0041] According to the design principle of the orthogonal experiment, 9 orthogonal experiment schemes are obtained, each scheme is a different ratio of aluminum hydroxide, borax, and sodium silicate. For example, the...

Example Embodiment

[0044] Example 2: Preparation of flame retardant fiberboard

[0045] 2.1 Test materials

[0046] Wood fiber: It is eucalyptus wood fiber, obtained from the production line of Guangxi Haolin Artificial Board Co., Ltd. without sizing, with a moisture content of 5-8%.

[0047] Urea-formaldehyde resin adhesive: taken from Guangxi Haolin Artificial Board Co., Ltd., viscosity 16.94s (coated-4 cups), pH 8.5.

[0048] Aluminum hydroxide: analytically pure, molecular formula Al(OH) 3 , Molecular weight 78, produced by Tianjin Bodi Chemical Co., Ltd.

[0049] Borax: analytically pure, molecular formula Na 2 B 4 O 7 ·10H2O, molecular weight 381.37, produced by Tianjin Bodi Chemical Co., Ltd.

[0050] Sodium silicate: analytically pure, molecular formula Na 2 SiO 3 ·9H 2 O, molecular weight 284.22, produced by Tianjin Bodi Chemical Co., Ltd.

[0051] 2.2 Pressing process

[0052] Medium density board density: 750kg / m 3 ;

[0053] Board specification: 50cm×50cm×1cm;

[0054] Sizing amount: 18%;

[0055] ...

Example Embodiment

[0076] Example 3: Test of oxygen index and mechanical properties of flame-retardant fiberboard

[0077] 3.1 Main equipment

[0078] Precision circular saw machine, produced by Zhejiang Shunxin Machinery Co., Ltd.

[0079] JF-3 oxygen index tester, produced by Nanjing Jiangshi Analytical Instrument Factory.

[0080] Stopwatch, provided by the laboratory.

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Abstract

Belonging to the technical field of fireproof material development, the invention specifically relates to a composite flame retardant and a method for preparation of a flame retardant fiber board from the same. The composite flame retardant is composed of aluminum hydroxide, borax and sodium silicate in a mass ratio of 4-6:3-5:2-4. The composite flame retardant provided by the invention has the advantages of good flame retardant effect, low toxicity, good smoke suppression and environmental friendliness, can significantly improve the flame retardant properties of the fiber board, and has cheap price, thus being suitable for industrial production of the flame retardant fiber board.

Description

technical field [0001] The invention belongs to the technical field of fireproof material development, and specifically relates to a composite flame retardant and a method for preparing flame-retardant fiberboards. Background technique [0002] Humans have tried to flame-retardant wood a long time ago. In Roman times, wood used to build houses and warships was soaked in a mixture of vinegar and lime to improve its fire resistance. In 1735, Jonathan Wyld treated fiber textiles with a mixture of alum, borax and ferrous sulfate, and successfully applied for the world's first patent on flame retardant treatment technology. In 1821, Gay-Lussac used ammonium phosphate, ammonium chloride and borax to treat wood, and flame retardants entered the stage of systematic research. From 1930 to 1935, the American Forestry Laboratory focused on research on wood flame retardants, mainly those containing phosphorus, nitrogen, boron, and halogens. Since the 1950s, the United States and othe...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08K3/22C08K3/38C08K3/34B27N1/02B27N3/10B27N3/14
Inventor 刁海林黄承达
Owner GUANGXI UNIV
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