Aluminium hydroxide composite anti-flaming density fiber board and preparation method thereof

A technology of density fiberboard and aluminum hydroxide, which is applied in the field of composite flame retardants, can solve the problems of damage to the mechanical properties of fiberboard, toxicity, and pollution of human life and the environment, and achieve the effect of low cost and simple preparation process

Inactive Publication Date: 2010-06-02
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] First of all, the traditional flame retardants for MDF are mainly divided into two categories: inorganic and organic. However, the amount of inorganic flame retardants is large, at the cost of damaging the mechanical properties of fiberboards. Organic flame retardants are added in small amounts, but they are toxic and pollute humans. life and environment, so it is one of the highlights of the present invention to combine inorganic and organic synergistically in fiberboard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The parts indicated in the following examples all refer to parts by mass. Concentrations are all mass percent concentrations.

[0018] Surface treatment of aluminum hydroxide: first dry and refine to 20-50μm, then evenly spray 0.5%-1% coupling agent dilute solution on the surface of aluminum hydroxide, stir with a mixer for 5-10min, and then dry for application .

[0019] Example 1:

[0020] 12 parts of urea-formaldehyde resin (solid content 50%), 1 part of ammonium chloride, 25 parts of aluminum hydroxide modified by aminopropyltriethoxysilane, 4 parts of montmorillonite, 1 part of titanium dioxide, paraffin wax emulsion (20% ) 1 part, sprayed evenly on the surface of poplar fiber (100 parts) with a spray gun in turn, after the fiber is dried to a moisture content of 8%, it is paved and formed, pre-pressed (pressure 3MPa), hot-pressed (pressure 4MPa, temperature 160°C Left and right, speed 60mm / min), cooling promptly obtains flame-retardant MDF, and the measured oxy...

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PUM

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Abstract

The invention relates to an aluminium hydroxide composite anti-flaming density fiber board and a preparation method thereof; according to the prepared anti-flaming density fiber board, the needed characteristic substances are as follows by mass parts: 100 parts of wood fiber, 20-30 parts of aluminium hydroxide, 0-10 parts of flame retardant synergists, 1-3 parts of coupling agents, 12-18 parts of adhesives, 1-3 parts of curing agents and 1-3 parts of waterproof agents; the composite flame retardant has low cost and no precipitation and is environmental-friendly and has no toxicity, and has good anti-flaming effect on density fiber board, oxygen index can each 36 percent and the vertical burning level is UL-94V-0.

Description

technical field [0001] The invention relates to the use of aluminum hydroxide in conjunction with other compounds to prepare a composite flame retardant, which is then applied to a density fiberboard to obtain better flame retardant performance. Background technique [0002] First of all, the traditional flame retardants for MDF are mainly divided into two categories: inorganic and organic. However, the amount of inorganic flame retardants is large, at the cost of damaging the mechanical properties of fiberboards. Organic flame retardants are added in small amounts, but they are toxic and pollute humans. life and the environment, so it is one of the highlights of the present invention to combine inorganic and organic synergistically in the fiberboard. [0003] Secondly, the aluminum hydroxide used in the present invention is a by-product produced by a company. In order to protect the environment, reduce costs, and improve utilization, it is the second highlight of the presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/04B27K3/52
Inventor 张胜陈小随戴荣继熊映明
Owner BEIJING UNIV OF CHEM TECH
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