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Expansion type fire retardant material

A kind of flame retardant material and intumescent technology, which is applied in the field of flame retardant materials, can solve the problems of poor compatibility between flame retardant materials and polyolefins, environmental pollution, and large addition amount, and achieve good compatibility, environmental friendliness, and high addition amount small effect

Inactive Publication Date: 2003-10-08
EAST CHINA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The technical problem to be solved in the present invention is to disclose a phosphorus-nitrogen series intumescent flame-retardant material, so as to overcome the poor compatibility between the flame-retardant material and polyolefin and the large amount of addition existing in the prior art, and to avoid the Defects of Environmental Pollution Caused by the Use of Halogen

Method used

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  • Expansion type fire retardant material

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Effect test

Embodiment 1

[0028] Add 19g of pentaerythritol, 2.5g of water, and 10g of phosphorus pentoxide into a three-neck flask, place in an oil bath at 75°C, and stir vigorously for 6 hours; add 12.6g of melamine, and react at 160°C for 2 hours. After the reaction was finished, the obtained product was washed with a large amount of deionized water until it was nearly neutral. After the polypropylene is plasticized on a two-roller plastic mixer, add 20% flame retardant, knead at 160°C for 10 minutes to make it evenly mixed, and hydraulically form it on a hot press at 185°C. The flame retardancy of the flame retardant and the mechanical properties of the prepared samples were determined. The test result is that the oxygen index is 23, the horizontal combustion test is FH-2, and the tensile strength is 8.2MPa. Its infrared spectrum is as figure 1 shown. Its specific structure is as follows: Among them, 3371.27cm -1 It is N-H structure; 3131.27cm -1 It is -OH structure; 2707.54cm -1 It is an ali...

Embodiment 2

[0030] Add 18g of dipentaerythritol, 5g of water, and 10g of phosphorus pentoxide into a three-neck flask, place in an oil bath at 90°C, and stir vigorously for 4 hours; add 12.6g of melamine, and react at 160°C for 2 hours. After the reaction was finished, the obtained product was washed with a large amount of deionized water until it was nearly neutral. After the polypropylene is plasticized on a two-roller plastic mixer, add 20% flame retardant, knead at 160°C for 10 minutes to make it evenly mixed, and hydraulically form it on a hot press at 185°C. The flame retardancy of the flame retardant and the mechanical properties of the prepared samples were determined. The test result is that the oxygen index is 26, the horizontal combustion test is FH-2, and the tensile strength is 7.8MPa.

Embodiment 3

[0032] Add 13g of tripentaerythritol, 10.1g of water, and 20g of phosphorus pentoxide into a three-neck flask, place in an oil bath at 105°C, and stir vigorously for 4 hours; add 18.9g of melamine, and react at 170°C for 2 hours. After the reaction was finished, the obtained product was washed with a large amount of deionized water until it was nearly neutral. After the polypropylene weighed in proportion is plasticized on a two-roller plastic mixer, add a flame retardant and knead at 185°C for 10 minutes to make it evenly mixed, then hydraulically form it on a hot press at 185°C, and make a sample with a universal prototype machine . The flame retardancy of the flame retardant and the mechanical properties of the prepared samples were determined. The test result is that the oxygen index is 28, the horizontal combustion test is FH-2, and the tensile strength is 7.5MPa.

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Abstract

An expansion-type flame-retarding material is prepared through reaction between polyol and phosphorus compound containing hydroxy, adding melamine, reaction and modifying surface by high-molecular substance. Its advantages are high compatibility to polyethene and polypropyene, less consumption, high mechanical performance and flame-retarding effect, no poison and corrosion, and environment friendly.

Description

technical field [0001] The invention relates to a flame-retardant material, in particular to a phosphorus-nitrogen series intumescent flame-retardant material. Background technique [0002] Phosphorus-nitrogen intumescent flame retardant material (IFR) is mainly composed of phosphorus and nitrogen, and does not contain halogen. It is a new type of flame retardant material developed on the basis of being used as a flame retardant coating. When the IFR-containing high-polymer material is heated and burned, a layer of carbon foam layer is formed on the surface, which can insulate heat, oxygen, smoke, and prevent droplet behavior. It has good resistance to repeated exposure to flames for a long time sex. IFR is a very promising new flame retardant, which has been paid more and more attention by people. [0003] Involving phosphorus-nitrogen intumescent flame retardant materials and their synthesis processes mainly include the following categories: [0004] (1) CN01128575.3 is...

Claims

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Application Information

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IPC IPC(8): C08K5/49C08K9/04
Inventor 王幸宜王雪峰李春香
Owner EAST CHINA UNIV OF SCI & TECH
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