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A flame-retardant reinforced PBT/PTT composite material with high glow wire temperature and its preparation method

A composite material and high glow wire technology, applied in the field of PBT/PTT polymer composite materials, can solve the problems of less research on flame retardant reinforced PBT/PTT composite materials, high melting temperature, and small application range, and achieve good market prospects. , The effect of small smoke emission and low price

Inactive Publication Date: 2015-08-26
SHANGHAI SUNNY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its brittleness and high melting temperature, its application range is limited.
At present, there are few studies on flame retardant reinforced PBT / PTT composites

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0031] Table 1: Proportions of Examples 1 to 6 (% by weight)

[0032] raw material name Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 PBT (viscosity 0.8) 36.4 30 32.5 34 23.5 20.4 PTT (viscosity 1.2) 28 26.4 13.9 15 21.9 20 Toughener 4 4 5 3.9 5 5 brominated polystyrene 8 10 12 0 0 0 Decabromodiphenylethane 0 0 0 8 10 12 Melamine orthophosphate 4 4 0 0 4 0 Melamine polyphosphate 0 0 5 5 0 5 Molybdenum trioxide 0.5 0.5 0.5 0.5 0.5 0.5 Antimony trioxide 2 3 4 2 3 4 pentaerythritol 1 1 1 0.5 1 2 Alkali-free long glass fiber 15 20 25 30 30 30 antioxidant 0.3 0.3 0.3 0.3 0.3 0.3 lubricant 0.8 0.8 0.8 0.8 0.8 0.8

[0033] Put all components except the alkali-free long glass fiber into the high-mixer and mix for 3 minutes, and then add it to the twin-screw extruder. The alkali-free long glass fiber is added...

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Abstract

The invention discloses a flame-retardant reinforced PBT / PTT composite material with a high glowing filament temperature and a preparation method thereof. The composite material is prepared from the following raw materials in percentage by weight: 35 to 70 percent of polybutylece terephthalate, 20 to 50 percent of polytrimethylene terephthalate, 3 to 20 percent of halogenated flame retardant, 0 to 15 percent of expansion flame retardant, 1 to 10 percent of inorganic flame retardant, 0.5 to 5 percent of flame retardant, 15 to 40 percent of non-alkalinity fireglass, 5 to 15 percent of flexibilizer and 0.2 to 2 percent of charring agent. The preparation method of the PBT / PTT composite material provided by the invention is simple in process. The composite material prepared by the method has high mechanical performance and small smoke release amount, can meet the requirements of a glow wire ignition temperature (GWIT) under a product thickness of over 0.8 millimeters of more than or equal to 850 DEG C and a flame retarding grade of UL94-V0 ( 1.6 millimeters, 3.2 millimeters), a Verband Deutscher Elektrotechniker (VDE) requirement and a plastic injection molding requirement completely, has higher performance than other flame-retarding reinforced PBT materials on market, is easy to dye and low in price and has a bright market prospect.

Description

technical field [0001] The invention relates to the field of PBT / PTT polymer composite materials, in particular to a flame-retardant reinforced PBT / PTT composite material with high glow wire temperature and a preparation method thereof. Background technique [0002] Flame-retardant reinforced polybutylene terephthalate (PBT) composites have the advantages of high mechanical properties, good fatigue resistance and dimensional stability, small creep, aging resistance and excellent electrical properties, etc. Wide range of applications. However, because electronic and electrical products are prone to heat and combustion during use, fires occur. Therefore, not only are materials required to have excellent mechanical and electrical properties, but they are also required to have good flame retardancy, so that fire hazards are not easy to occur during use. [0003] Polytrimethylene terephthalate (PTT) is a new type of thermoplastic engineering plastic that has been industrialized ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K13/04C08K7/22C08K7/14B29B9/06B29C47/92B29C48/92
CPCB29C47/92B29C2947/92895B29C2947/9259B29C2947/92885B29C2947/92704B29C48/04B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 王尹杰孟成铭
Owner SHANGHAI SUNNY
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