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Graphene modified flame-retardant heat conducting nylon plastic and preparation method thereof

A graphene modification, nylon plastic technology, applied in heat exchange materials, chemical instruments and methods, etc., can solve the problems of LED lamp life effect, material temperature increase, loss of nylon, etc., to improve heat dissipation effect and improve thermal conductivity. performance, improve the effect of energy exchange

Active Publication Date: 2019-02-19
XIAMEN INST OF RARE EARTH MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Nylon 6 is a heat insulator, and it is easy to cause the temperature of the material to rise when used for a long time, which will affect the life of the LED lamp
At present, a high amount of thermally conductive fillers such as alumina, silicon nitride, etc. are usually used to modify the thermal conductivity of nylon 6, but at the same time, other properties of nylon, such as mechanical properties and durability, will be lost.

Method used

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  • Graphene modified flame-retardant heat conducting nylon plastic and preparation method thereof

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preparation example Construction

[0038] In the following examples, the preparation method of the graphene-modified flame-retardant heat-conducting nylon plastic comprises the following steps:

[0039] 1) Take various raw materials according to the above-mentioned formula;

[0040] 2) Dry the high-flow nylon 6 resin at a temperature of 70°C-80°C for 1-2 hours, and then mix it with all other raw materials;

[0041] 3) Put the mixed raw materials in the lower hopper of the extruder, and melt, extrude and granulate through the twin-screw extruder to obtain the graphene-modified flame-retardant and heat-conducting nylon plastic.

[0042] Further, the process parameters of the above-mentioned twin-screw extruder melt extrusion granulation are: the temperature of the first zone is 190-195°C, the temperature of the second zone is 225-230°C, the temperature of the third zone is 230-235°C, and the temperature of the fourth zone is 225-230°C , the temperature of the fifth zone is 220-225°C, the temperature of the sixth...

Embodiment 1

[0044] A graphene-modified flame-retardant and thermally conductive nylon plastic, comprising the following mass fractions:

[0045] High fluidity nylon 6 is 44%; negative ion powder 10%; sulfonated graphene 10%; spherical ceramic powder 3%; polyamide elastomer 6%; flame retardant 20%; flame retardant synergist 5%; processing Auxiliary 2%.

[0046] Among them, the negative ion powder is a compound of tourmaline powder and lanthanum chloride, and the compounding mass ratio is 1:2; the spherical ceramic powder is aluminum nitride; the flame retardant synergist is melamine cyanurate, and the processing aid is Antioxidant.

[0047] Prepare flame-retardant and heat-conducting nylon plastics according to the above-mentioned method.

Embodiment 2

[0049] A graphene-modified flame-retardant and thermally conductive nylon plastic, comprising the following mass fractions:

[0050] High fluidity nylon 6 is 54.5%; negative ion powder 8%; sulfonated graphene 7%; spherical ceramic powder 2%; polyamide elastomer 5%; flame retardant 18%; flame retardant synergist 4%; processing Auxiliary 1.5%.

[0051] Among them, the negative ion powder is a compound of tourmaline powder and lanthanum chloride, and the compounding mass ratio is 1:3; the spherical ceramic powder is silicon nitride; the flame retardant synergist is melamine orthophosphate, and the processing aid is anti Oxygen and lubricant.

[0052] Prepare flame-retardant and heat-conducting nylon plastics according to the above-mentioned method.

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Abstract

The invention provides graphene modified flame-retardant heat conducting nylon plastic and a preparation method thereof. The graphene modified flame-retardant heat conducting nylon plastic is preparedfrom, by mass, 44-72% of high-fluidity nylon 6, 5-10% of negative ion powder, 5-10% of sulfonated graphene, 1-3% of spherical ceramic powder, 3-6% of polyamide elastomer, 10-20% of a flame retardant,3-5% of a flame-retardant synergist and 1-2% of processing additives. The graphene modified flame-retardant heat conducting nylon plastic prepared according to the method integrates flame retardationand high heat conductivity, the heat conductivity reaches 5W / m. or above, and the flame retardation level is V-0.

Description

technical field [0001] The invention relates to a nylon composite material, in particular to a graphene-modified flame-retardant and heat-conducting nylon plastic and a preparation method thereof, belonging to the technical field of chemical materials. Background technique [0002] In recent years, with the development of industrial production and science and technology, high-power electronic and electrical products have developed rapidly, and there are more and more problems such as product heat generation, resulting in reduced product efficacy and shortened service life. Some data show that the reliability of electronic components decreases by 10% for every 2°C increase in temperature; the life at 50°C is only 1 / 6 of that at 25°C. [0003] Nylon 6 is a thermoplastic engineering plastic with excellent performance. It has excellent mechanical properties, good electrical properties, and the advantages of wear resistance, oil resistance, and solvent resistance. It is widely us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/00C08K3/38C08K3/16C08K7/00C08K3/04C08K13/04C09K5/14
CPCC08K2201/003C08K2201/011C08L77/02C08L2201/02C08L2201/22C09K5/14C08L87/005C08K13/04C08K7/18C08K3/38C08K3/16C08K3/04C08K7/00C08K7/24C08L77/00
Inventor 林凤龙宋立军
Owner XIAMEN INST OF RARE EARTH MATERIALS
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