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Fiber-reinforced nylon composite material and preparation method thereof

A nylon composite material and fiber-reinforced technology, which is applied in the field of fiber-reinforced nylon composite material and its preparation, can solve the problems of reducing the performance of polymer materials and low thermal conductivity, and achieve the improvement of thermal conductivity and mechanical properties, low thermal conductivity and waterproof. The effect of excellent impermeability

Inactive Publication Date: 2018-12-25
WUHU YUANKUI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional thermally conductive composite materials generally use Si3N4, SiN, AlN and BN as thermally conductive fillers, but because of their low thermal conductivity, high thermal conductivity can only be achieved with high additions, but this will inevitably reduce the high thermal conductivity. Other properties of the molecular material itself

Method used

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  • Fiber-reinforced nylon composite material and preparation method thereof

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Embodiment 1

[0028] The preparation method of modified graphene comprises the following steps:

[0029] 1) graphene is added in the ethanol solution of oxalic acid and carries out ultrasonic dispersion, obtains the alcohol dispersion liquid of carboxylated graphene;

[0030] 2) Add sodium metaaluminate to the alcohol dispersion of carboxylated graphene, then carry out stirring reaction, centrifuge after the reaction finishes, obtain filtrate;

[0031] 3) Heat the filtrate to 400°C at a heating rate of 1°C / min under a nitrogen atmosphere, and keep it warm for 3 hours. The mass ratio of graphene to oxalic acid is 1:6, and the mass ratio of graphene to sodium metaaluminate is 1:3.

Embodiment 2

[0033] The preparation method of modified graphene comprises the following steps:

[0034] 1) graphene is added in the propanol solution of oxalic acid and carries out ultrasonic dispersion, obtains the alcohol dispersion liquid of carboxylated graphene;

[0035] 2) Add sodium metaaluminate to the alcohol dispersion of carboxylated graphene, then carry out stirring reaction, centrifuge after the reaction finishes, obtain filtrate;

[0036] 3) Heat the filtrate to 600°C at a heating rate of 5°C / min under nitrogen atmosphere, and keep it warm for 1h. The mass ratio of graphene to oxalic acid is 1:2, and the mass ratio of graphene to sodium metaaluminate is 1:7.

Embodiment 3

[0038] A fiber-reinforced nylon composite material, calculated in parts by weight, comprising the following raw materials:

[0039] 70 parts of nylon 66, 14 parts of silicone modified polyester acrylate, 7 parts of aramid fiber, 24 parts of modified graphene of embodiment 1, 6 parts of maleic anhydride grafted ethylene-octene copolymer, styrene- 1.2 parts of maleic anhydride copolymer, 0.4 parts of polyethylene wax and 0.4 parts of hindered phenolic antioxidant.

[0040] Preparation method of fiber reinforced nylon composite material:

[0041] 1) Nylon 66, maleic anhydride grafted ethylene-octene copolymer, aramid fiber and the modified graphene of Example 1 were mixed and stirred evenly, then added to a twin-screw extruder, and carried out at 260 ° C. Extrusion granulation to obtain thermal conductive nylon masterbatch;

[0042] 2) Dry the heat-conducting nylon masterbatch in step 1), and then mix and stir with silicone-modified polyester acrylate, styrene-maleic anhydride ...

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Abstract

The invention provides a fiber-reinforced nylon composite material and a preparation method thereof. The fiber-reinforced nylon composite material comprises the following raw materials in parts by weight: 60-80 parts of nylon, 10-20 parts of organosilicone modified polyester acrylate, 5-10 parts of aramid fibers, 20-30 parts of modified graphene, 4-8 parts of a flexibilizer, 0.6-1.8 parts of a compatilizer, 0.2-0.6 part of a lubricating agent and 0.2-0.6 part of an antioxidant. The modified graphene is mainly prepared from graphene, oxalic acid and sodium metaaluminate. The preparation methodcomprises the steps of mixing the raw materials in different batches; and then carrying out double-screw extruding and pelletizing. The nylon composite material not only has quite good heat-conductioneffect, but also can resist quite high temperature, and is also quite excellent in other mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a fiber-reinforced nylon composite material and a preparation method thereof. Background technique [0002] Nylon has excellent comprehensive properties such as good mechanical properties, good flexibility, wear resistance, oil resistance, self-lubrication, etc., and is widely used in the fields of automobile industry, electronic and electrical industry, mechanical equipment, construction industry and so on. Due to its advantages of short processing cycle, low production cost, long service life and high degree of product design freedom, it has been more and more widely used. In recent years, its application in thermal conductive polymer composite materials is particularly prominent. For example, DSM produces The high-power LED radiator has been generally recognized by the market. [0003] In order to improve the surface corrosion resistance of thermally con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L67/06C08L77/10C08K9/04C08K9/02C08K3/04
CPCC08L77/06C08L2201/08C08L2205/035C08L2205/16C08L67/06C08L77/10C08K9/04C08K9/02C08K3/042
Inventor 章波郭元
Owner WUHU YUANKUI NEW MATERIAL TECH CO LTD
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