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High temperature-resistant nylon/thermotropic liquid crystal polymer blend and preparation method for blend

A liquid crystal polymer, high temperature resistant technology, applied in the polymer field, can solve the problems of high price, low mechanical properties, difficult processing, etc.

Active Publication Date: 2012-07-18
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide an easy-to-process, high-performance, high-performance nylon that is difficult to process, poor in fluidity, low in mechanical properties, hard and brittle, and too expensive for liquid crystal polymers in the current industrial production process of high-temperature-resistant nylon. High-strength, high-rigidity HPN / TLCP composite material and preparation method thereof

Method used

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  • High temperature-resistant nylon/thermotropic liquid crystal polymer blend and preparation method for blend
  • High temperature-resistant nylon/thermotropic liquid crystal polymer blend and preparation method for blend

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Vacuum dry 80 parts of HPN at 90°C for 24 hours for later use, and dry 10 parts of TLCP at 130°C for 4 hours for later use;

[0035] (2) Take 7 parts of compatibilizer PE-g-MAH, 0.4 part of antioxidant 1098 and 0.2 part of antioxidant 168, and 0.8 part of lubricant calcium stearate to be dried separately for use;

[0036] (3) The above-mentioned components are fully mixed in a high-speed mixer;

[0037] (4) Then put it into a twin-screw extruder for extrusion granulation. The temperature of the extruder is: Zone 1 temperature: 270°C, zone 2 temperature: 285°C, zone 3 temperature: 300°C, zone 4 temperature: 310°C, zone 5 temperature: 320°C, zone 6 temperature: 300°C, zone 7 Zone temperature: 285°C, head temperature: 175°C; extrusion rate: 180r / min, residence time: 2min.

Embodiment 2

[0039] (1) Vacuum dry 70 parts of HPN at 80°C for 24 hours for later use, and dry 10 parts of TLCP at 130°C for 4 hours for later use;

[0040] (2) Take 5 parts of compatibilizer PE-g-MAH, 0.6 part of antioxidant 1098 and 0.2 part of antioxidant 168, and 0.4 part of lubricant zinc stearate and dry them separately for use;

[0041] (3) The above-mentioned components are fully mixed in a high-speed mixer;

[0042] (4) Then put it into a twin-screw extruder for extrusion granulation. The temperature of the extruder is: Zone 1 temperature: 280°C, zone 2 temperature: 290°C, zone 3 temperature: 305°C, zone 4 temperature: 315°C, zone 5 temperature: 320°C, zone 6 temperature: 310°C, zone 7 Zone temperature: 290°C, head temperature: 180°C; extrusion rate 200r / min, residence time 1min.

Embodiment 3

[0044] (1) Vacuum dry 90 parts of HPN at 100°C for 24 hours for later use, and dry 8 parts of TLCP at 130°C for 4 hours for later use;

[0045] (2) Take 5 parts of compatibilizer PE-g-MAH, 0.7 part of antioxidant 1098 and 0.1 part of antioxidant 168, and 0.2 part of lubricant calcium stearate and dry them separately for use;

[0046] (3) The above-mentioned components are fully mixed in a high-speed mixer;

[0047] (4) Then put it into a twin-screw extruder for extrusion granulation. The temperature of the extruder is: Zone 1 temperature: 270°C, zone 2 temperature: 280°C, zone 3 temperature: 300°C, zone 4 temperature: 310°C, zone 5 temperature: 320°C, zone 6 temperature: 300°C, zone 7 Zone temperature: 285°C, head temperature: 190°C; extrusion rate 150r / min, residence time 3min.

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Abstract

The invention discloses a high temperature-resistant nylon / thermotropic liquid crystal polymer blend and a preparation method for the blend. The blend comprises the following components in parts by weight: 70-90 parts of high temperature-resistant nylon, 5-10 parts of thermotropic liquid crystal polymer, 5-10 parts of compatilizer, 0.2-1.0 part of antioxygen and 0.2-0.8 part of lubricant. The novel copolymer material provided by the invention not only has the characteristics of high strength and high rigidity of the high temperature-resistant nylon but also has excellent flame retardant property and high liquidity of the liquid crystal polymer. The material production process is simple; the operation of the method is simple and convenient; and very high industrial economic benefits can be obtained.

Description

technical field [0001] The invention belongs to the technical field of macromolecules, and relates to a liquid crystal polymer blend and a preparation method thereof. Background technique [0002] Thermotropic liquid crystal polymer (TLCP) has become a technological highland that the industry is competing for. Liquid crystal polymer materials have excellent mechanical properties and have been widely used in many high-tech fields. Liquid crystal polymers have high strength and high modulus mechanical properties, and also have excellent thermal stability, heat resistance and chemical resistance, and are excellent in wear resistance and wear reduction. TLCP has good weather resistance and radiation resistance, and has excellent flame retardancy, which can extinguish the flame without continuing to burn. Its combustion grade reaches the level of UL94V-0. TLCP is one of the best fire safety specialty plastics. [0003] However, because the high price of TLCP in the market lim...

Claims

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Application Information

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IPC IPC(8): C08L77/00C08L77/06C08L67/00C08L51/06C08L51/00B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/875B29C48/92B29C2948/92561B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 李荣
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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