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Glass fiber reinforced halogen-free flame-retardant PA66 and preparation thereof

A technology of PA66 and glass fiber, which is applied in the field of thermoplastic polymer fiber-reinforced flame-retardant materials and its preparation, can solve the problems of low flame-retardant grade, low mechanical properties, and poor compatibility, and achieve high flame-retardant grade and excellent mechanical properties , Excellent thermal stability

Active Publication Date: 2009-08-12
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of poor compatibility, low mechanical properties, low flame retardant grade and poor thermal stability of glass fiber reinforced halogen-free flame retardant PA66 at present, and to provide a kind of flame retardant performance, physical and mechanical properties and thermal stability Glass fiber reinforced non-halogen flame retardant PA66 with excellent performance

Method used

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preparation example Construction

[0018] The preparation method of the glass fiber reinforced halogen-free flame retardant PA66 of the present invention comprises the following steps: (1) ultra-fine processing the halogen-free flame retardant with a jet mill, and the particle size after treatment is 0.5-10 μm; (2) ) carry out high-speed stirring and mixing the dried PA66 resin, the halogen-free flame retardant, borate, antioxidant and processing aid after step (1); (3) pass the above-mentioned mixture through a weight loss formula The metering feeder is fed into the twin-screw extruder, the feeding speed is adjusted to 220-300r.p.m, the content of alkali-free glass fiber is controlled at 15-50%, and the alkali-free glass fiber is fed from the side of the twin-screw extruder The temperature of each section of the twin-screw extruder from the feed port to the head is 220°C, 270°C, 270°C, 270°C, 270°C, 260°C, 260°C, 260°C, 260°C, The screw speed is 250~350r.p.m, and the aspect ratio of the twin-screw extruder is ...

Embodiment 1

[0021] PA66 resin: 60%; alkali-free glass fiber: 23%; composite of magnesium phosphate and melamine polyphosphate (phosphorus is +3): 15%; borate: 0.5%; phenolic antioxidant + phosphorous acid Ester antioxidant: 0.5%; long-chain carboxylate nucleating agent: 1%.

Embodiment 2

[0023] PA66 resin: 40%; E-glass fiber: 35%; zinc phosphate (phosphorus is +3): 23%; borate: 1%; phenolic antioxidant + phosphite antioxidant: 0.5%; Metal salt lubricants: 0.5%.

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PUM

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Abstract

The invention discloses a glass fiber reinforced halogen free flame retardation PA66 material and a preparation method thereof. The glass fiber reinforced halogen free flame retardation PA66 comprises the following components by weight percentage: 36 to 60 percent of PA66 resin, 15 to 50 percent of non-alkali glass fiber, 12 to 25 percent of halogen free flame retardant, 0.5 to 1 percent of borate, 0.5 percent of antioxidant and 0.5 to 1 percent of processing additive. The glass fiber reinforced halogen free flame retardation PA66 has high flame retardation grade which reaches vertical firing (0.8mm)FV-0, excellent mechanical properties: a tensile strength reaching 145MPa, bending strength reaching 215MPa and cantilever notch impact strength reaching 12kj / m for a 30 percent glass fiber reinforced product and good thermal endurance: heat distortion temperature (1.82MPa) reaching 250 DEG C. The borates are added to improve the thermal stability, and consequently the end product has excellent thermal stability property. The preparation method for the glass fiber reinforced halogen free flame retardation PA66 material has the advantage of simple operation.

Description

technical field [0001] The invention relates to a thermoplastic polymer fiber-reinforced flame-retardant material and a preparation method thereof, in particular to a glass fiber-reinforced halogen-free flame-retardant PA66 material and a preparation method thereof. Background technique [0002] Glass fiber reinforced halogen-free flame-retardant PA66 is a very important halogen-free flame-retardant engineering plastic. Mainly used in electronic appliances, electrical switches, connectors and other fields. The development of high-performance glass fiber-reinforced halogen-free flame-retardant PA66 new material is a hot spot and an important direction for the development of new materials today. This high-performance glass fiber-reinforced halogen-free flame-retardant PA66 material not only has excellent comprehensive mechanical properties, but also has excellent flame-retardant properties, low toxicity and low smoke density when burning. Faced with increasingly stringent en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08K13/06C08K3/38C08K3/32C08K5/3492C08J5/08B29B9/14B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/625B29C48/9185B29C2948/9259B29C2948/92828B29C2948/92866B29C2948/92885B29C2948/92895
Inventor 张宇姜苏俊陈大华刘志力万勇军朱文
Owner KINGFA SCI & TECH CO LTD
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