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Flame retardant, preparation method as well as modified polydicyclopentadiene and preparation method

A technology of polydicyclopentadiene and dicyclopentadiene is applied in the field of flame retardant materials to achieve the effects of good flame retardant performance, simple process, easy control and realization

Active Publication Date: 2015-05-06
常州巨德新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the purposes of the present invention is to provide a polymerizable phosphazene flame retardant that can be copolymerized with dicyclopentadiene, which solves the problem that the existing flame retardant is insoluble in dicyclopentadiene monomer and affects the reaction injection molding. Realize the flame retardant purpose of polydicyclopentadiene

Method used

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  • Flame retardant, preparation method as well as modified polydicyclopentadiene and preparation method
  • Flame retardant, preparation method as well as modified polydicyclopentadiene and preparation method
  • Flame retardant, preparation method as well as modified polydicyclopentadiene and preparation method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0040] The chemical structural formula of the present embodiment flame retardant is:

[0041]

[0042] The preparation method of the flame retardant in this example, the specific operation steps are as follows: under the protection of nitrogen, add norbornene methanol and sodium methoxide of the same amount into 200mL tetrahydrofuran, stir and react at 70°C for 1 hour, and then cool the reaction system After reaching room temperature, add hexachlorocyclotriphosphazene with norbornene methanol and other substances, then heat up to 100°C, react for 3 hours, cool to room temperature, add water to wash until neutral, and dry the organic layer with anhydrous sodium sulfate After filtration, the solvent was distilled off, and the product was mononorbornenylmethoxy pentachlorocyclotriphosphazene with a content of 84%.

[0043] The flame retardant-modified polydicyclopentadiene composite material of this embodiment is obtained by blending and polymerizing dicyclopentadiene and a fl...

Embodiment 2

[0049] The chemical structural formula of the present embodiment flame retardant is:

[0050]

[0051] The preparation method of the flame retardant in this example is as follows, and the specific operation steps are as follows: under the protection of nitrogen, add norbornene methanol and sodium methoxide in an equivalent amount to 200ml tetrahydrofuran, and stir and react at 80°C for 2 hours. After cooling to room temperature, add hexachlorocyclotriphosphazene with norbornene methanol and other substances, then heat up to 90°C, react for 5 hours, cool to room temperature, add water to wash until neutral, and wash the organic layer with anhydrous sodium sulfate After drying, filter and distill off the solvent, the product is mononorbornenylmethoxy pentachlorocyclotriphosphazene with a content of 90.5%.

[0052] The flame retardant-modified polydicyclopentadiene composite material in this embodiment is formed by blending and polymerizing dicyclopentadiene and a flame retard...

Embodiment 3

[0058] The chemical structural formula of the present embodiment flame retardant is:

[0059]

[0060]The preparation method of the flame retardant in this example is as follows. The specific operation steps are as follows: under the protection of nitrogen, add norbornene methanol and sodium methoxide in an equivalent amount to 200ml of tetrahydrofuran, stir and react at 90°C for 4 hours, and then react After cooling the system to room temperature, add hexachlorocyclotriphosphazene with norbornene methanol and other substances, then raise the temperature to 80°C, react for 6 hours, cool to room temperature, add water to wash until neutral, and wash the organic layer with anhydrous sulfuric acid After drying with sodium, filter and distill off the solvent, the product is mononorbornenylmethoxy pentachlorocyclotriphosphazene with a content of 93.5%.

[0061] The flame retardant-modified polydicyclopentadiene composite material in this embodiment is formed by blending and poly...

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Abstract

The invention discloses a flame retardant, a preparation method as well as modified polydicyclopentadiene and a preparation method and belongs to the technical field of flame retardant materials. According to the flame retardant disclosed by the invention, by taking a phosphonitrilic chloride trimer as a matrix which is connected with a norbornene methanol group, the flame retardant has a good co-dissolving and co-polymerizing characteristic with dicyclopentadiene for modifying dicyclopentadiene. The invention discloses the flame retardant modified polydicyclopentadiene material which is blended and polymerized by dicyclopentadiene and the flame retardant, wherein the flame retardant is 3-15% by mass of dicyclopentadiene. By using mono-norborneol methoxyl cyclotriphosphazene pentachloride as the flame retardant, compared with a pure polydicyclopentadiene material, a few flame retardant is added to obviously improve the flame retardant performance of polydicyclopentadiene and meanwhile, the mechanical property is not reduced. The preparation method disclosed by the invention is simple in craft process, easy to control and realize, and suitable for industrialized popularization and application.

Description

technical field [0001] The invention belongs to the technical field of flame retardant materials, and in particular relates to a flame retardant, a preparation method, a modified polydicyclopentadiene composite material, and a preparation method. Background technique [0002] Polydicyclopentadiene is a new type of thermosetting engineering plastic with excellent comprehensive mechanical properties, such as good strength and toughness balance, good dimensional stability, acid and alkali resistance, excellent coating and electrical insulation properties, etc., so , a wide range of applications. However, polydicyclopentadiene material only contains carbon and hydrogen elements, which is a flammable material, which limits its application in some special fields. For this reason, people overcome this deficiency by adding various flame retardants, but the catalytic system of ring-opening polymerization of dicyclopentadiene has high sensitivity to many flame retardants, and general...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/6593C08F232/08C08F4/69
Inventor 张玉清
Owner 常州巨德新材料有限公司
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