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Flame-retardant PBT/PA alloy material and preparation method thereof

A technology of alloy materials and composite materials, which is applied in the field of environmentally friendly polymer materials, can solve the problems that electronic capacitor parts cannot be used, and achieve the effects of improving compatibility and increasing the temperature of the glow wire.

Inactive Publication Date: 2015-06-10
ANHUI KEJU NEW MATERIALS
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Problems solved by technology

[0005] At present, the flame retardant PBT material system is more commonly used as glass fiber / decabromodiphenylethane / antimonide composite system or glass fiber / brominated polystyrene / antimonide composite system, but it cannot be applied to the CTI standard GB / T4207- Electronic capacitor parts required by 2003

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  • Flame-retardant PBT/PA alloy material and preparation method thereof

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[0027] In addition, the embodiment of the present invention also provides a method for preparing a flame-retardant PBT / PA alloy material, comprising the following steps:

[0028] (1) take each raw material according to the raw material mass portion proportioning of the flame-retardant PBT / PA alloy material as described in any one of claims 1-9;

[0029] (2) Mix the weighed PBT resin, transparent PA resin, glow wire temperature raising agent, brominated polystyrene, antimonide, compatibilizer, antioxidant, and lubricant in a medium speed mixer for 3-5 minutes ;

[0030] (3) The mixed raw materials are put into the twin-screw extruder and fed through the main feeding port, and the glass fiber is added from the side feed, and melted and extruded to granulate; the process conditions of the twin-screw extruder It is: the temperature of the first zone of the twin-screw extruder is 230-240°C, the temperature of the second zone is 225-250°C, the temperature of the third zone is 220-2...

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Abstract

The invention discloses a flame-retardant PBT / PA alloy material and a preparation method thereof. The alloy material comprises the following raw materials in parts by mass: 30-42 parts of a PBT resin, 8-15 parts of a transparent PA resin, 6-12 parts of a glow wire temperature increasing agent, 7-12 parts of brominated polystyrene, 2-5 parts of antimonide, 20-35 parts of glass fibers, 3-5 parts of a compatilizer, 0.1-1 part of an antioxidant and 0.1-1 part of a lubricating agent. The PBT / PA alloy material disclosed by the invention is enhanced by the glass fibers and is excellent in mechanical property, a novel glow wire temperature increasing agent is adopted, the material can reach the level V0, high glow wire temperature and high CTI of the material can be obtained, and the alloy material can be used for preparing contactors and circuit breakers.

Description

technical field [0001] The invention relates to the technical field of environment-friendly polymer materials, in particular to a flame-retardant PBT / PA alloy material and a preparation method. Background technique [0002] Polybutylene terephthalate (PBT) is a crystalline thermoplastic saturated polyester, which has the advantages of good mechanical properties, electrical insulation properties and processing properties, and the most important thing is thermal stability and chemical stability. It is widely used in various fields such as electrical and electronic, automobile industry, and industrial accessories. [0003] However, for many years, the flame retardant safety evaluation of electronic and electrical plastic materials or plastic parts has been based on the US UL94 standard. With the frequent occurrence of fire incidents caused by household appliances, people put forward higher performance requirements for plastic test pieces. According to the standard IEC 60695-2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L77/00C08L25/06C08L51/00C08K13/04C08K7/14B29B9/06B29C47/92B29C48/92
Inventor 徐东莫品书
Owner ANHUI KEJU NEW MATERIALS
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