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A kind of high thermal conductivity and high heat dissipation nylon composite material and its preparation method and application

A nylon composite material, high heat dissipation technology, applied in the field of polymer materials, can solve the problems of adding fins or grooves, increasing manufacturing costs, low production efficiency, etc., to reduce surface temperature, improve service life, and high production efficiency. Effect

Active Publication Date: 2017-09-01
横店集团得邦工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both of these methods have certain problems. Adding fins or grooves increases the manufacturing cost, and at the same time causes the accumulation of dust, which is difficult to clean.
However, the use of thermally conductive coatings has low production efficiency, and at the same time, there are a lot of solvents in the coating application, which causes environmental pollution. In addition, during the use process, the high and low temperature changes of the lampshade can easily cause the coating to fall off.

Method used

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  • A kind of high thermal conductivity and high heat dissipation nylon composite material and its preparation method and application
  • A kind of high thermal conductivity and high heat dissipation nylon composite material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add high thermal conductivity magnesium oxide (average particle size 5um) into the high-speed mixer, slowly and evenly add KH550 surface modifier in the form of spray, gradually raise the temperature to 100-120°C, stir at 600 rpm for 5 minutes at high speed to achieve the surface Organic modification, using the same method to carry out surface organic modification treatment on nano zinc oxide (average particle size 200 nm) with octadecyl trimethoxysilane, and oxidize high thermal conductivity magnesium oxide, zinc oxide and nylon particles Magnesium: Zinc Oxide: Nylon is mixed in a ratio of 45:5:50 (parts by mass), plus 0.3 parts (parts by mass) of lubricant and 5 parts (parts by mass) of flame retardant, and the Down-melt extrusion and granulation to obtain nylon composite materials with high thermal conductivity and high heat dissipation.

Embodiment 2

[0037] Add alumina (average particle size 10um) and aluminum nitride (average particle size 15um) into the high-speed mixer, slowly and evenly add KH550 surface modifier in the form of spray, gradually increase the temperature to 100-120°C, 600 rpm Under high-speed stirring for 5 minutes per minute to realize surface organic modification, adopt the same method to carry out organic surface modification treatment to nano-barite powder (average particle diameter 50 nanometers) with tridecafluorooctyltrimethoxysilane, and aluminum oxide , aluminum nitride, barite powder and nylon particles are mixed in the ratio of 25:15:20:40 (parts by mass), plus 2 parts (parts by mass) of lubricant and 10 parts (parts by mass) of flame retardant, and double The screw extruder melts and extrudes at 250°C and pelletizes to obtain nylon composite materials with high thermal conductivity and high heat dissipation.

Embodiment 3

[0039] Add high thermal conductivity alumina (average particle size 10um) and boron nitride (average particle size 20um) into the high-speed mixer, slowly and evenly add KH550 surface modifier in the form of spray, and gradually increase the temperature by 100-120°C, Stir at high speed at 600 rpm for 5 minutes to achieve surface organic modification, use the same method to compound octadecyltriethoxysilane and γ-aminopropyltriethoxysilane (mass ratio 9:1) on the nano Beryllium oxide (average particle diameter 100 nanometers) carries out surface modification, and aluminum oxide, boron nitride, beryllium oxide, graphene microcrystal and nylon particle are mixed with the ratio of 35:10:10:5:40 (mass parts), Add 2 parts (parts by mass) of lubricant and 7 parts (parts by mass) of flame retardant, melt extrude and pelletize at 250° C. through a twin-screw extruder to obtain a nylon composite material with high thermal conductivity and high heat dissipation.

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Abstract

The invention discloses a high-heat-conduction and high-heat-radiation nylon composite material as well as a preparation method and application thereof and belongs to the technical field of high molecular materials. The preparation method comprises the following steps: carrying out surface organic modification treatment on heat-conduction fillers by adopting a surfactant I to obtain modified heat-conduction fillers; carrying out surface organic modification treatment on radiation heat dissipation particles by adopting a surfactant II to obtain modified radiation heat dissipation particles; and fusing and commixing the modified heat-conduction fillers, the modified radiation heat dissipation particles, nylon particles, a lubricant and a fire retardant at a mass ratio of (20-50) to (5-20) to (40-60) to (0.3-2) to (5-10), and compounding and granulating to obtain the composite material. The high-heat-conduction and high-heat-radiation nylon composite material disclosed by the invention has high heat conductivity coefficient and also has an outward radiation heat dissipation function; heat generated by an LED (Light Emitting Diode) lamp can be effectively dissipated into the external air so that the surface temperature of a lamp base is lowered and the service life of the lamp is prolonged.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a nylon composite material with high thermal conductivity and high heat dissipation, and a preparation method and application thereof. Background technique [0002] LED has the advantages of small size, light weight, firm structure, low operating voltage, long service life, energy saving and environmental protection, and is recognized as the next generation lighting technology. However, as much as 70% of the electrical energy of LEDs is converted into heat energy, resulting in excessively high operating temperatures, which in turn lead to problems such as chip aging, light efficiency attenuation, and shortened service life. Therefore, the problem of heat dissipation has become a bottleneck in the development of LED lighting. As the environment, energy and other issues pose serious challenges to human existence, the world is looking for breakthroughs for energy saving, co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/00C08K9/06C08K3/22C08K3/28C08K3/38C08K3/34C08K3/30C08K3/04C08K3/00
CPCC08K3/00C08K3/04C08K3/22C08K3/28C08K3/30C08K3/38C08K9/06C08K2003/222C08K2003/2227C08K2003/2296C08K2003/282C08K2003/3045C08K2003/382C08K2201/003C08L77/00
Inventor 陈军杨晋涛卜和安徐国栋王丹
Owner 横店集团得邦工程塑料有限公司
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