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Flame-retardant toughened polydicyclopentadiene composite material and preparation method thereof

A technology of polydicyclopentadiene and dicyclopentadiene, which is applied in the field of preparation of the composite material, can solve the problems of degraded material and product performance, harsh reaction conditions, and limited application range, etc., and achieves improved impact strength and simple preparation method , The effect of increasing the limiting oxygen index

Active Publication Date: 2014-04-23
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, PDCPD belongs to hydrocarbons and is easy to burn. Once ignited, it can form a chain combustion with a lot of black smoke, which severely limits its application range.
A lot of work has been done on the flame retardant research of PDCPD, but the catalytic polymerization reaction conditions of DCPD are harsh, and the molding process is special, so the choice of flame retardant should not reduce the catalytic activity, adapt to the RIM process, and not degrade the materials and products. performance

Method used

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  • Flame-retardant toughened polydicyclopentadiene composite material and preparation method thereof
  • Flame-retardant toughened polydicyclopentadiene composite material and preparation method thereof

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Embodiment 1

[0020] The flame-retardant and toughened polydicyclopentadiene composite material of this embodiment is formed by blending and polymerizing the following main raw materials in the following weight percentages: 100 parts of dicyclopentadiene, a number average molecular weight of 200,000, and a chlorine content of 2 parts of 50 wt% chlorinated polypropylene, 2 parts of antimony trioxide powder with an average particle diameter of 20 microns.

[0021] The flame-retardant and toughened polydicyclopentadiene composite material of this embodiment is prepared by the following method:

[0022] Under the protection of nitrogen, add 2 parts of chlorinated polypropylene with a molecular weight of 100,000 and 50% chlorine content to 100 parts of dicyclopentadiene at 70°C and stir to dissolve, and then add 2 parts of dihydrogen trioxide with an average particle size of 20 microns. Antimony powder, after mixing evenly, divide into two parts A and B and add them to RIM machine A and B storag...

Embodiment 2

[0024] The flame-retardant and toughened polydicyclopentadiene composite material of this embodiment is formed by blending and polymerizing the following main raw materials in the following weight percentages: 100 parts of dicyclopentadiene, a number average molecular weight of 150,000, and a bromine content of 3 parts of 60 wt% brominated polypropylene, 0.5 part of antimony trioxide powder with an average particle diameter of 20 microns.

[0025] The flame-retardant and toughened polydicyclopentadiene composite material of this embodiment is prepared by the following method:

[0026] Under nitrogen protection, add 3 parts of brominated polypropylene with a molecular weight of 150,000 and 60% bromine to 100 parts of dicyclopentadiene at 75°C and stir to dissolve, then add 0.5 parts of dicyclopentadiene with an average particle size of 20 microns. After mixing the antimony powder evenly, divide it into two parts A and B and add them to the storage tanks of RIM machine A and B r...

Embodiment 3

[0028] The flame-retardant and toughened polydicyclopentadiene composite material of this embodiment is formed by blending and polymerizing the following main raw materials in the following weight percentages: 100 parts of dicyclopentadiene, a number average molecular weight of 150,000, and a chlorine content of 5 parts of 40wt% chlorinated polyethylene, 3 parts of antimony trioxide powder with an average particle diameter of 10 microns.

[0029] The flame-retardant and toughened polydicyclopentadiene composite material of this embodiment is prepared by the following method:

[0030] Under the protection of nitrogen, add 5 parts of chlorinated polyethylene with a molecular weight of 150,000 and 40% chlorine content to 100 parts of dicyclopentadiene at 80°C and stir to dissolve, and then add 3 parts of dicyclopentadiene with an average particle size of 10 microns. Antimony powder, after mixing evenly, divide into two parts A and B and add them to RIM machine A and B storage tan...

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Abstract

The invention discloses a flame-retardant toughened polydicyclopentadiene composite material, which is prepared by blending and polymerizing the following main raw materials in parts by weight: 100 parts of dicyclopentadiene, 2-10 parts of halogenated polyolefin of which the halogen content is more than 40 percent by weight, 0.5-10 parts of antimonous oxide, 0-2 parts of an antioxidant and 0-2 parts of a pigment, wherein the halogenated polyolefin is chlorinated polyethylene, chlorinated polypropylene, chlorinated ethylene propylene diene monomer, chlorinated chloroprene rubber, chlorinated natural rubber, bromized polyethylene, bromized polypropylene, bromized ethylene propylene diene monomer or bromized natural rubber. In the flame-retardant toughened polydicyclopentadiene composite material disclosed by the invention, the halogenated polyolefin and the dicyclopentadiene are blended and polymerized, so that the toughness of the composite material can be improved, and the impact strength can be increased by over 25 percent; and moreover, the a halogen on the halogenated polyolefin can react with added antimonous oxide during combustion to generate SbX3 (X is a halogen) with a flame-retardant effect, so that the flame retardance of the composite material is enhanced greatly, and the limited oxygen index is increased by over 20 percent.

Description

technical field [0001] The invention relates to a flame-retardant and toughened polydicyclopentadiene composite material and a preparation method of the composite material. Background technique [0002] Polydicyclopentadiene (Polydicyclopentadiene, abbreviated as PDCPD) is a kind of engineering plastic with good comprehensive performance, which is polymerized from monomer dicyclopentadiene under the action of a catalyst. The DCPD monomer adopts a two-component catalytic system, that is, a two-component catalytic system with tungsten and molybdenum complexes as cocatalysts and alkylaluminum or alkylzinc as cocatalysts. Through ring-opening shift polymerization (ROMP) and reaction High impact cross-linked PDCPD was obtained by injection molding (RIM) process. The material has both high impact resistance and high flexural modulus, as well as good dimensional stability, acid and alkali resistance, excellent coating and electrical insulation properties. RIM can be used for one-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L45/00C08L23/28C08L15/02C08K3/22C08F132/08C08F4/69
Inventor 张玉清刘翠云高喜平卢敏郭萌谢英波
Owner HENAN UNIV OF SCI & TECH