Nitrogen-phosphorus expansion flame retardant containing flame retardant synergist and preparation method thereof

A technology of nitrogen-phosphorus expansion and flame-retardant synergist, which is applied in the direction of fire-resistant coatings, etc., can solve the problems of low flame-retardant efficiency and large amount of flame-retardant addition, and achieve the effect of convenient production and use and reducing adverse effects

Active Publication Date: 2010-02-03
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention proposes a nitrogen-phosphorus intumescent flame retardant containing a flame-retardant synergist and a preparation method thereof, which overcomes the low flame-retardant efficien

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Preparation of the nitrogen-phosphorous intumescent flame retardant containing flame retardant synergist of the present invention: put 8% iron pyrophosphate, 30.7% pentaerythritol and 61.3% ammonium polyphosphate into the mixer according to the mass ratio Stir well until uniform, and then obtain the nitrogen-phosphorus intumescent flame retardant containing the flame retardant synergist of the present invention.

[0021] The flame retardant effect test is carried out to the nitrogen phosphorus intumescent flame retardant containing flame retardant synergist of the present invention:

[0022] First prepare flame-retardant polypropylene with the nitrogen-phosphorous intumescent flame retardant containing flame-retardant synergist of the present invention prepared above: the above-mentioned prepared flame-retardant synergist containing 25% by mass ratio The nitrogen-phosphorous intumescent flame retardant is melt-blended with 70% polypropylene and 5% maleic anhydride-graft...

Embodiment 2

[0029] Preparation of nitrogen-phosphorus expansion flame retardant containing flame retardant synergist: put 10% iron pyrophosphate, 30% pentaerythritol and 60% ammonium polyphosphate into the mixer according to the mass ratio and stir until uniform, that is, the nitrogen-phosphorous intumescent flame retardant containing the flame retardant synergist of the present invention is obtained.

[0030] Flame retardant effect test: the above-mentioned nitrogen-phosphorous intumescent flame retardant containing a flame retardant synergist prepared in this embodiment, which accounts for 20% of the total mass of the system, is mixed with 75% polypropylene and 5% maleic anhydride The grafted polypropylene is melt-blended to obtain flame-retardant polypropylene. It was cut into a standard sample of 130mm×13mm×3mm for testing, and the vertical combustion reached the UL-94V-0 level.

Embodiment 3

[0032] According to the mass ratio, 0.05% iron pyrophosphate and 33.32% ammonium polyphosphate, 33.32% pentaerythritol and 33.31% melamine are put into the mixer and fully stirred to obtain the flame retardant synergist of the present invention. Nitrogen and phosphorus intumescent flame retardants.

[0033] Flame retardant effect test: the nitrogen-phosphorous intumescent flame retardant containing flame retardant synergist prepared in this embodiment, which accounts for 22% of the total mass of the system, is mixed with 73% of the total mass of the system and 5% of the total mass of the system. Melt blending of toric anhydride grafted polypropylene to obtain flame retardant polypropylene. It was cut into a standard sample of 130mm×13mm×3mm for testing, and the vertical combustion reached the UL-94V-0 level.

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PUM

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Abstract

The invention discloses a nitrogen-phosphorus expansion flame retardant containing a flame retardant synergist and a preparation method thereof. The nitrogen-phosphorus expansion flame retardant containing the flame retardant synergist is characterized in that 90-99.95 percent of the nitrogen-phosphorus expansion flame retardant and 0.05-10 percent of the flame retardant synergist are evenly mixedaccording to the mass; the nitrogen-phosphorus expansion flame retardant comprises a nitrogen-phosphorus compound expansion flame retardant or/and a nitrogen-phosphorus simple substance expansion flame retardant; and the flame retardant synergist is selected from lanthanum phosphate, cerous phosphate, manganese pyrophosphate, ferric phosphate and/or ferric pyrophosphate. The nitrogen-phosphorus expansion flame retardant containing the flame retardant synergist can be suitable for anti-flaming of polyolefin, polyester or phenyl polymer, thereby overcoming the defects of low flame retardant efficiency, large addition quantity, and the like in the prior nitrogen-phosphorus expansion flame retardant, reducing the adverse effect of flame retardant property of a matrix due to the hygroscopicityof a flame retardant agent and reducing the adverse effect of mechanical property of the matrix due to the flame retardant agent with both convenience of production and use.

Description

technical field [0001] The invention belongs to the technical field of nitrogen and phosphorus expansion flame retardants, in particular to nitrogen and phosphorus expansion flame retardants containing flame retardant synergists and a preparation method thereof. Background technique [0002] Polymers dominate combustible solid fires due to their ease of combustion and wide range of applications. Although inorganic flame retardants such as magnesium hydroxide and aluminum hydroxide have both flame retardant and smoke suppression effects and do not produce toxic and corrosive gases when burned, they seriously affect the performance of flame retardant materials due to the large amount of addition required. Physical, mechanical properties and processing properties. Although halogenated flame retardants have good flame retardant effects, they have been gradually eliminated because HX, which acts as a flame retardant, is a toxic and corrosive gas that is harmful to the environmen...

Claims

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Application Information

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IPC IPC(8): C09K21/12C08K13/02
Inventor 胡源聂士斌宋磊
Owner UNIV OF SCI & TECH OF CHINA
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