Nanometer titanium nitride-flake graphite filling-modified PA6/ABS composite thermal conductive plastic for LEDs and preparation method thereof

A technology of nano-titanium nitride and flake graphite, which is applied in the direction of melt spinning, single-component polyamide artificial filament, etc., can solve the problems of long molding process cycle, large specific weight, uneven heat conduction of heat-conducting plastics, etc., and improve the heat conduction of plastics Effects of unevenness, excellent electrical insulation, and good mechanical properties

Inactive Publication Date: 2016-01-20
ANHUI HEHAN OPTOELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the production of LED lighting sources and lamps, metal aluminum or ceramic materials are mainly used as heat conduction and heat dissipation systems. However, these materials have some defects in the actual use process. For example, although aluminum-based heat dissipation materials have relatively good heat dissipation capabilities, However, there are problems such as long molding process cycle, electrical conductivity, and single shape. Although ceramic materials are insulating, they have a large specific gravity and high molding difficulty, which is not conducive to mass production and its application is also limited.
[0004] Organic thermally conductive plastics have gradually attracted the attention of the industry in recent years. First, the plastic itself has the advantages of good insulation, light weight, low price, and diverse shapes, which provides a new idea and solution for the production of LED lighting products. Thermally conductive plastics The difficulty lies in improving its thermal conductivity. The traditional production method is mainly obtained by directly mixing high thermal conductivity fillers in plastics, blending and extruding. The thermal conductivity plastics produced by this method generally have uneven thermal conductivity and low utilization of fillers. The problem of its comprehensive heat conduction and heat dissipation still needs to be improved

Method used

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Effect test

Embodiment

[0014] The composite plastic of this embodiment is prepared from the following raw materials by weight: PA6 masterbatch 55, ABS masterbatch 25, polyethylene maleic anhydride copolymer 6, nano-titanium nitride 22, flake graphite 13, triphenyl phosphite 0.3 , Antioxidant 10100.1, silane coupling agent 1.5, zinc stearate 1.2.

[0015] The preparation method of the PA6 / ABS composite thermally conductive plastic filled with nano-titanium nitride-flaky graphite for the described LED is as follows:

[0016] (1) Preparation of PA6-nano-titanium nitride composite fiber: First, stir and mix nano-titanium nitride with 0.8 parts by weight of silane coupling agent, and then mix it with PA6 masterbatch evenly, and the obtained mixture is melt-spun The process is made into composite short fibers with a length of 15 mm and a diameter of 40 μm for use;

[0017] (2) Preparation of ABS-flaky graphite composite fiber: firstly mix the flake graphite with the remaining weight part of the silane co...

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Abstract

The invention discloses a nanometer titanium nitride-flake graphite filling-modified PA6/ABS composite thermal conductive plastic for LEDs and a preparation method thereof. The thermal conductive plastic employs a mixture of PA6 and ABS plastics and has excellent plasticity, durability and electric insulation performance; and after filling modification by flake graphite and nanometer titanium nitride, the PA6 and ABS plastics have better thermal conductivity, and composite short fibers with high thermal conductivity prepared from the composite materials through melt spinning are more uniformly dispersed and bonded in later mixing and can form a uniform and stable heat transfer network, so the phenomenon of nonuniform heat transfer of plastics in traditional production methods can be improved and the utilization rate of the thermal conductive filling materials can be enhanced. Test results show that the composite thermal conductive plastic has excellent thermal conductivity, resistance to UV ageing and durability, is rarely prone to yellowing and embrittlement, and can be widely used in the field of heat dissipation of the LEDs.

Description

technical field [0001] The invention relates to the technical field of heat-conducting plastic preparation, in particular to a PA6 / ABS composite heat-conducting plastic filled and modified by nano-titanium nitride-flaky graphite for LEDs and a preparation method thereof. Background technique [0002] As a new generation of light source, LED has a direct relationship with its light output efficiency and lifespan and the working temperature of the chip. The heat dissipation problem has always been the focus of attention. Regardless of LED chip packaging or lighting design applications, it is often necessary to release the heat generated by LEDs through thermally conductive materials. The cost of heat dissipation also accounts for about 20% to 30% of the system cost. The search for cost-effective heat dissipation solutions has always been Become the goal pursued by the industry. [0003] At present, in the production of LED lighting sources and lamps, metal aluminum or ceramic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L55/02C08L51/06C08K13/06C08K9/06C08K7/00C08K3/04C08K3/28C08K5/526C08K5/098D01F6/90D01F6/56D01F1/10D01D5/08
CPCC08L77/02C08K2201/011C08L2201/08C08L2203/20C08L2205/03C08L2205/16D01D5/08D01F1/10D01F6/56D01F6/90C08L55/02C08L51/06C08K13/06C08K9/06C08K7/00C08K3/04C08K3/28C08K5/526C08K5/098
Inventor 夏云
Owner ANHUI HEHAN OPTOELECTRONICS TECH
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