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Flame-retardant thermoplastic composition and preparation method thereof

A thermoplastic composition and mixture technology, applied in the field of nylon molding materials, can solve the problems of corrosion of electrical equipment, high phosphorus precipitation, easy corrosion of processing equipment and molds, etc. The effect of good flame retardancy and mechanical strength

Active Publication Date: 2011-07-27
KINGFA SCI & TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The currently used red phosphorus flame retardant nylon generally has a high amount of phosphorus precipitation, which is easy to corrode processing equipment and molds. At the same time, it is easy to release phosphine gas during long-term use, which will corrode electrical equipment and reduce the use of electrical equipment. long-term stability

Method used

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  • Flame-retardant thermoplastic composition and preparation method thereof
  • Flame-retardant thermoplastic composition and preparation method thereof

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Embodiment Construction

[0033] Preparation method: mix each component in a twin-screw extruder (twin-screw diameter is 75mm, aspect ratio is 38), mix at a temperature of 230-300°C, discharge as strands and cool to a temperature capable of granulation Granulate. After the pellets are dried (usually at 80°C in a vacuum oven for 2 days), the dried pellets are processed at a temperature of 230°C-300°C into standard samples for UL94V tests, and are also made according to GB1040, GB9341 , The standard sample specified in GB1843 is also made into a 50mm×6mm×4mm sample to test phosphorus precipitation.

[0034] A: Nylon resin (FYR27B Shenma Group Co., Ltd.);

[0035] B: red phosphorus flame retardant;

[0036] C: glass fiber (HP3786 32MM, Taiwan Bicheng Co., Ltd.)

[0037] D: copper compound,

[0038] D1: Aldrich

[0039] D2: CuCl, Aldrich

[0040] E. Other additives

[0041] Example

[0042] The results given in the table clearly show that due to the addition of the copper compound accord...

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Abstract

The invention discloses a flame-retardant thermoplastic composite and a preparation method thereof, the flame-retardant thermoplastic composite comprises the following components according to parts by weight: 40-80 nylon resin, 3-36 red phosphorus flame retardant, 1-50 filler, 0.01-3 phosphorus precipitation stabilizer and 0-50 other additives; and the phosphorus precipitation stabilizer is one or more than two of copper complexes and copper halides. The flame-retardant thermoplastic composite can greatly reduce the precipitation amount of phosphorus, improve the stability and lead a materialto have good flame retardance and mechanical strength; and a molded product with low wall thickness has UL94 classified as V-0 or V-1, improved phosphorus precipitation stability. The flame-retardantthermoplastic composite is applicable to sheets, plates and the molded products, in particular to electrical appliances and electronic parts, the specific applications are lamps, such as lamp holder,plug, permeator, coil rack, capacitor box body or connector, circuit breaker, housing of relay, reflector and the like.

Description

technical field [0001] The invention relates to the field of nylon molding materials, in particular to a flame-retardant thermoplastic composition. Background technique [0002] Nylon molding materials with flame-retardant properties occupy an important position in the electrical and electronic fields, where they are used to manufacture, for example, supports for voltage parts. In addition to having good flame-retardant capabilities, these parts must also have Good mechanical and electrical properties. The currently used red phosphorus flame-retardant nylon generally has a high amount of phosphorus precipitation, which is easy to corrode processing equipment and its molds. At the same time, it is easy to release phosphine gas during long-term use, which will corrode electrical equipment and reduce the use of electrical equipment. long-term stability. [0003] In order to reduce the amount of phosphorus precipitation, CN1238793A showed very good phosphorus stability by comb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/00C08K3/02C08K3/16C08K5/29
Inventor 郑一泉梁惠强蔡彤旻宁凯军岑茵张宇吴博
Owner KINGFA SCI & TECH CO LTD
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