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Aramid fiber reinforced high temperature resistance nylon composite material and preparation method thereof

A technology of nylon composite material and aramid fiber, which is applied in the field of nylon composite material and its preparation, can solve the problems not related to high temperature resistant nylon/aramid fiber composite material, and achieve good dimensional stability, high heat distortion temperature, water absorption low rate effect

Active Publication Date: 2014-05-14
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In terms of high temperature resistant nylon modification, there is no report on the preparation of high temperature resistant nylon / aramid fiber composites by in-situ polymerization

Method used

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  • Aramid fiber reinforced high temperature resistance nylon composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1) Weigh 100 parts by weight of nylon 10T salt, 10 parts by weight of aramid 1414 fiber with a diameter of 12 μm and a length of 0.5 mm, 0.5 parts by weight of benzoic acid, and 0.4 parts by weight of sodium hypophosphite, And the above components are added into the autoclave;

[0045] 2) Weigh 50 parts by weight of deionized water and 1 part by weight of nano-montmorillonite and dissolve them in deionized water to prepare a solution. Stir the prepared solution under ultrasound for 1-2 hours, then add into the autoclave;

[0046] 3) Replace the air in the autoclave with nitrogen for at least three times, and then pass in nitrogen as a reaction protection gas; raise the temperature to 150°C, and make the pressure reach 2.5MPa within 50 minutes, and keep the pressure at 2.5MPa, the constant pressure reaction time is 2 hours; then the pressure in the reactor is released to normal pressure, and the material is discharged. During the reaction process, the temperature in the...

Embodiment 2

[0048] 1) Weigh 100 parts by weight of nylon 10T salt, 1 part by weight of aramid 1414 fiber with a diameter of 12 μm and a length of 0.5 mm, 0.1 parts by weight of benzoic acid, and 0.1 parts by weight of sodium hypophosphite, And the above components are added into the autoclave;

[0049] 2) Weigh 30 parts by weight of deionized water and 0.2 parts by weight of nano-montmorillonite and dissolve them in deionized water to prepare a solution. Stir the prepared solution under ultrasound for 1-2 hours, then add into the autoclave;

[0050] 3) Replace the air in the autoclave with nitrogen for at least three times, and then pass in nitrogen as a reaction protection gas; raise the temperature to 150°C, and make the pressure reach 2.5MPa within 50 minutes, and keep the pressure at 2.5MPa, the constant pressure reaction time is 2 hours; then the pressure in the reactor is released to normal pressure, and the material is discharged. During the reaction process, the temperature in th...

Embodiment 3

[0052] 1) Weigh 100 parts by weight of nylon 10T salt, 13 parts by weight of aramid 1414 fiber with a diameter of 12 μm and a length of 0.5 mm, 1 part by weight of benzoic acid, and 0.6 parts by weight of sodium hypophosphite, And the above components are added into the autoclave;

[0053] 2) Weigh 60 parts by weight of deionized water and 1 part by weight of nano-montmorillonite and dissolve them in deionized water to prepare a solution. Stir the prepared solution under ultrasound for 1-2 hours, then add into the autoclave;

[0054] 3) Replace the air in the autoclave with nitrogen for at least three times, and then pass in nitrogen as a reaction protection gas; raise the temperature to 150°C, and make the pressure reach 2.5MPa within 50 minutes, and keep the pressure at 2.5MPa, the constant pressure reaction time is 2 hours; then the pressure in the reactor is released to normal pressure, and the material is discharged. During the reaction process, the temperature in the re...

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Abstract

The invention belongs to the field of high temperature resistance nylon composite materials, and relates to an aramid fiber reinforced high temperature resistance nylon composite material and a preparation method thereof. The composite material is prepared from the following components by weight: 100 parts of a nylon salt, 1-13 parts of aramid fibers, 0.1-1 part of a capping agent, 0.2-1 part of montmorillonite, 0.1-0.6 part of a catalyst, and 30-60 parts of deionized water. According to the present invention, the in situ polymerization method is adopted to improve the interface adhesion between the aramid fibers and the nylon matrix and improve the mechanical property of the composite material; the prepared reinforced high temperature resistance nylon composite material has characteristics of good mechanical property, high heat distortion temperature and low water absorption compared with the pure nylon matrix; and the method is simple and is easy to perform, and is suitable for large scale industrial production.

Description

technical field [0001] The invention belongs to the field of high-temperature-resistant nylon composite materials, and relates to a nylon composite material and a preparation method thereof. technical background [0002] Nylon has excellent mechanical properties, heat resistance, wear resistance and other properties, and its consumption ranks first among the top five engineering plastics in the world. Due to its excellent rigidity, heat resistance, dimensional stability and other advantages, high temperature resistant nylon has been used in chemical machinery, wear-resistant parts, transmission structural parts, automobile manufacturing parts, screw rod preventive mechanical parts, chemical mechanical parts, etc. With the high performance of electronic and electrical equipment and the lightweight of mechanical equipment, there are higher requirements for nylon in terms of strength, heat resistance, cold resistance, and dimensional stability. Therefore, some properties of ny...

Claims

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Application Information

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IPC IPC(8): C08L77/00C08L77/10C08K3/34
CPCC08K2201/003C08K2201/004C08K2201/011C08L77/06C08L2201/08C08L2205/16C08L77/10C08K3/34
Inventor 田文伟
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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