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Halogen-free, inflaming-retarding and high-toughness polyamide composition and preparation method thereof

A polyamide composition and high-toughness technology, applied in the field of halogen-free flame retardant plastic compositions, can solve the problem of lack of relevant data on the flame retardant properties of materials, and achieve the effects of suppressing melting and dripping and improving dispersibility.

Active Publication Date: 2013-11-06
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

This method was found to improve the limiting oxygen index of flame-retardant composites, but there is no relevant data on the flame-retardant properties of the materials

Method used

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  • Halogen-free, inflaming-retarding and high-toughness polyamide composition and preparation method thereof

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Embodiment 1～6

[0039] 1. Preparation method of composite powder rubber:

[0040] Acrylate rubber latex radiation crosslinking: 48% by weight of commercially available acrylate latex (the trade mark of Beijing Dongfang Chemical Factory is BC-01) 5Kg, place in the container, add dropwise 72g of isooctyl acrylate of 3% by weight under stirring , stirring was continued for one hour after the dropwise addition was complete. The latex was irradiated with a cobalt source with a dose of 2.5Mrad and a dose rate of 50Gy / min to obtain irradiated acrylate rubber latex. The gel content of the rubber particles is about 80%.

[0041] Organic montmorillonite (obtained through long-chain alkyl quaternary ammonium salt ion exchange reaction, the average particle size of its particles is 99.9% less than 200 mesh, the average wafer thickness is less than 25nm, product brand KD5, Zhejiang Fenghong Clay Chemical Co., Ltd. ) and water in a ratio of 1:10 by weight, and then use a high-shear dispersing emulsifier ...

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Abstract

The invention provides a halogen-free, inflaming-retarding and high-toughness polyamide composition and a preparation method thereof, which relate to a resin halogen-free and inflaming-retarding technique. The composite comprises 100 weight parts of polyamide resin, 5 to 25 weight parts of tripolycyanamide compound, 0 to 80 weight parts of carbon forming agent, and 5 to 25 weight parts of composite powdered rubber, wherein the carbon forming agent is at least one from polyol compounds with high carbon content and / or organic resins having hydroxyl; the composite powdered rubber is powdered polyacrylate rubber combined with organic imvite, wherein the weight ratio of a rubber phase to the organic imvite is (1-4):1, and the gel content of the rubber phase is 60 weight percent or above; and the composite powered rubber is prepared by uniformly mixing irradiated or non-irradiated polyacrylate rubber latex and organic imvite slurry according to a required dry weight ratio and drying. The polyamide composition provided by the invention has high fire-retarding performance and high toughness and can be widely used.

Description

technical field [0001] The present invention relates to a halogen-free flame-retardant plastic composition, and more particularly relates to a halogen-free flame-retardant polyamide composition, which maintains good impact performance while having excellent flame-retardant performance. Background technique [0002] Polyamide (PA, commonly known as nylon) is an engineering plastic with the largest consumption, the most varieties and the oldest qualifications among the five major engineering plastics, and its output ranks first among the five general-purpose engineering plastics. Polyamide for engineering plastics has good comprehensive performance, its strength is higher than that of metal, it has good mechanical properties, heat resistance, wear resistance, chemical resistance, flame retardancy and self-lubrication, and it is easy to process and has a low coefficient of friction , so it is widely used in the electronic-electrical field. Since the flame retardant performance...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/00C08L77/02C08L33/04C08K13/06C08K5/3492C08K5/053C08K3/34
Inventor 王小兰张师军张薇刘涛徐萌邵静波张丽英尹华张浩吕明福吕芸李魁陈力邹浩李杰杨庆泉
Owner CHINA PETROLEUM & CHEM CORP
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