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Wood fire retardant

A flame retardant, wood technology, applied in wood treatment, wood impregnation, wood impregnation and other directions, can solve the problems of strong hygroscopicity, high cost, unstable flame retardant performance, etc., achieve good flame retardant performance, less toxic gas, The effect of low hygroscopicity

Inactive Publication Date: 2015-09-23
张萍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is characterized by wide sources, low price, good flame retardancy, but strong hygroscopicity and poor loss resistance. Generally, a multi-component composite system of phosphorus, nitrogen and boron is used. The mechanism is to combine phosphorus, nitrogen or halogen into high In the main chain and side chain of the polymer, it can resist loss and has little effect on physical and mechanical properties, but the flame retardancy is unstable, the cost is high, and a large amount of smoke and toxic gases are produced when burning
In addition, there are organic nitrogen-phosphorus or organic nitrogen-phosphorus-boron composite flame retardants characterized by the methylolation of amino compounds such as urea, dicyandiamide, and melamine, but such flame retardants are used in wood treatment and use. The process will release toxic formaldehyde and pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Preparation of reinforcing agent: Mix 25 parts of phthalic anhydride, 60 parts of triethanolamine, and 135 parts of deionized water evenly, heat to 100° C., and react under normal pressure for 20 minutes.

[0018] (2) Preparation of wood flame retardant: 15 parts of ammonium polyphosphate, 10 parts of diammonium hydrogen phosphate, 5 parts of magnesium hydroxide, 5 parts of aluminum hydroxide, 15 parts of silica sol, 3 parts of carbonate, surface 2 parts of the active agent and 15 parts of the reinforcing agent prepared in step (1) were mixed at 50° C. under normal pressure and mechanically stirred to obtain the required wood flame retardant.

Embodiment 2

[0020] (1) Preparation of reinforcing agent: Mix 30 parts of phthalic anhydride, 70 parts of triethanolamine, and 140 parts of deionized water evenly, heat to 120° C., and react under normal pressure for 25 minutes.

[0021] (2) Preparation of wood flame retardant: 20 parts of ammonium polyphosphate, 12 parts of diammonium hydrogen phosphate, 8 parts of magnesium hydroxide, 8 parts of aluminum hydroxide, 20 parts of silica sol, 6 parts of carbonate, surface 3 parts of the active agent and 20 parts of the reinforcing agent prepared in step (1) are mechanically stirred at 50° C. under normal pressure and stirred evenly to obtain the required wood flame retardant.

[0022] This embodiment is the best implementation mode.

Embodiment 3

[0024] (1) Preparation of reinforcing agent: 40 parts of phthalic anhydride, 80 parts of triethanolamine, and 150 parts of deionized water were evenly mixed, heated to 120° C., and reacted under normal pressure for 30 minutes.

[0025] (2) Preparation of wood flame retardant: 25 parts of ammonium polyphosphate, 15 parts of diammonium hydrogen phosphate, 10 parts of magnesium hydroxide, 10 parts of aluminum hydroxide, 30 parts of silica sol, 10 parts of carbonate, surface 5 parts of the active agent and 25 parts of the reinforcing agent prepared in step (1) are mechanically stirred at 50° C. under normal pressure and stirred evenly to obtain the required wood flame retardant.

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PUM

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Abstract

The invention belongs to the field of fire retardant, and particularly relates to wood fire retardant. The wood fire retardant is composed of, by weight, 15 parts to 25 parts of ammonium polyphosphate, 10 parts to 15 parts of diammonium hydrogen phosphate, 5 parts to 10 parts of magnesium hydrate, 5 parts to 10 parts of aluminium hydroxide, 15 parts to 30 parts of silicon dioxide sol, 3 parts to 10 parts of carbonate, 2 parts to 5 parts of surface active agent and 15 parts to 25 parts of reinforcing agent. The reinforcing agent is composed of 25 parts to 40 parts of phthalic anhydride, 60 parts to 80 parts of triethanolamine and 135 parts to 150 parts of deionized water. The wood fire retardant has the advantages of being less in released poisonous gas, low in hygroscopicity, good in flame-retardant performance and low in cost.

Description

technical field [0001] The invention belongs to the field of flame retardants, in particular to a wood flame retardant. Background technique [0002] Wood is a porous and complex natural organic substance mainly composed of cellulose, hemicellulose and lignin. It is characterized in that it does not dissolve or melt under normal processing and use conditions, so the processing method is different from that of synthetic polymers. ; Wood molecules contain a large number of oxygen-containing polar groups such as hydroxyl and hydroxymethyl groups, so they have strong hygroscopicity and poor dimensional stability; in addition to being flammable, they are also prone to decay and chemical degradation. [0003] Based on the structure, properties and application characteristics of wood, wood flame retardants mainly include: flame retardants containing compounds or mixtures of phosphorus, nitrogen, boron and halogens. It is characterized by wide sources, low price, good flame retarda...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/52
CPCB27K3/52B27K2240/30
Inventor 张萍
Owner 张萍