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High-strength flame-retardant PBT/LCP composite material and preparation method thereof

A composite material and high-strength technology, applied in the field of high-strength flame-retardant PBT/LCP composite materials and their preparation, can solve the problems of non-flame retardant and poor strength, and achieve good flame retardancy, excellent heat resistance, and easy processing. Effect

Inactive Publication Date: 2015-06-10
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this composite material still has disadvantages such as poor strength and no flame retardancy.

Method used

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  • High-strength flame-retardant PBT/LCP composite material and preparation method thereof
  • High-strength flame-retardant PBT/LCP composite material and preparation method thereof
  • High-strength flame-retardant PBT/LCP composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Mix 50 parts of PBT, 5 parts of LCP, 1 part of PPA, 0.2 parts of nucleating agent NaV101, 0.2 parts of antioxidant 1010, 0.2 parts of antioxidant 1076, 0.5 parts of silane coupling agent 3-aminopropyl triethyl Oxysilane, 6 parts of decabromodiphenylethane, and 4 parts of antimony trioxide were mixed at high speed with a high-speed mixer at a speed of 500 rpm, at room temperature, and the mixing time was 6 minutes;

[0031] (2) Pour the mixture obtained in step (1) into the main feeding port of the twin-screw extruder, and then feed 40 parts of continuous glass fiber (10 μm in diameter) into the extruder from the glass fiber feeding port to control extrusion Exit temperature is 250-270°C, and the mixed material is pelletized through a twin-screw extruder to obtain the product, which is a high-strength flame-retardant PBT / LCP composite material. The relevant performance tests of the product are shown in Table 1.

Embodiment 2

[0033] (1) 40 parts of PBT, 15 parts of LCP, 0.8 parts of PPA, 2 parts of nucleating agent Surlyn, 0.2 parts of antioxidant 1010, 0.2 parts of antioxidant 1076, 0.4 parts of silane coupling agent 3-aminopropyl triethyl Oxysilane, 9 parts of decabromodiphenylethane, and 6 parts of antimony trioxide were mixed at high speed with a high-speed mixer at a speed of 800 rpm, at room temperature, and the mixing time was 5 minutes;

[0034] (2) Pour the mixture obtained in step (1) into the main feeding port of the twin-screw extruder, and then feed 30 parts of glass fiber (12 μm in diameter) into the extruder from the glass fiber feeding port to control extrusion The temperature of the machine is 250-270 ℃, and the mixed material is pelletized through a twin-screw extruder to obtain the product, which is a high-strength flame-retardant PBT / LCP composite material. The relevant performance tests of the product are shown in Table 1.

Embodiment 3

[0036] (1) 40 parts of PBT, 20 parts of LCP, 0.5 parts of PPA, 1 part of nucleating agent Surlyn, 0.3 parts of antioxidant P262, 0.4 parts of titanate coupling agent isopropyl trioleate acyloxy titanate , 6 parts of decabromodiphenylethane, 4 parts of antimony trioxide were mixed at high speed with a high-speed mixer, the speed was 500 rpm, room temperature, and the mixing time was 6 minutes;

[0037] (2) Pour the mixture obtained in step (1) into the main feeding port of the twin-screw extruder, and then feed 30 parts of glass fiber (11 μm in diameter) into the extruder from the glass fiber feeding port to control extrusion The temperature of the machine is 250-270 ℃, and the mixed material is pelletized through a twin-screw extruder to obtain the product, which is a high-strength flame-retardant PBT / LCP composite material. The relevant performance tests of the product are shown in Table 1.

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Abstract

The invention discloses a high-strength flame-retardant PBT / LCP composite material. The high-strength flame-retardant PBT / LCP composite material is prepared from the following components by weight: 40 to 50 parts of PBT, 5 to 20 parts of LCP, 30 to 40 parts of glass fiber, 10 to 15 parts of a fire retardant and 1.6 to 3.9 parts of an auxiliary agent. The preparation method comprises the following steps: uniformly mixing 40 to 50 parts of PBT, 5 to 20 parts of LCP, 10 to 15 parts of the fire retardant and 1.6 to 3.9 parts of the auxiliary agent; and then pouring the obtained mixture into a main feed inlet of a double screw extruder, adding 30 to 40 parts of glass fiber into the double screw extruder from a glass fiber feeding inlet and carrying out stranding pelletizing with the double screw extruder so as to obtain the high-strength flame-retardant PBT / LCP composite material. According to the invention, through blending and improvement of LCP and PBT, the PBT / LCP composite material integrates advantages of both LCP and PBT and has the characteristics of good mechanical properties, good stability, easy processing, flame retardation performance, etc.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a high-strength flame-retardant PBT / LCP composite material and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT) is one of the toughest engineering thermoplastics. It is a semi-crystalline material with very good chemical stability, mechanical strength, electrical insulation properties and thermal stability. These materials have good stability. PBT itself has the disadvantages of low strength and flammability, which limits its application range. [0003] Liquid crystal polymers (LCPs) are crystalline materials in the molten state with very good fluidity, chemical stability, mechanical strength, electrical insulation and thermal stability. However, when LCP is used alone, it still has the disadvantages of poor rigidity, strength and heat resistance. [0004] At present, domestic research on PBT is relatively mature, but LCP is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L101/12C08K13/04C08K7/14
Inventor 杨桂生孙鹏
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD