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A kind of flame-retardant heat-conducting nylon and preparation method thereof

A technology of nylon and thermally conductive fillers, which is applied in the field of polymer synthesis, modification and processing, can solve the problems of high heat dissipation effect of thermally conductive nylon, and achieve the effects of improving heat dissipation, improving charge conduction, and improving thermal conductivity

Active Publication Date: 2019-02-01
惠州市新可新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the current technologies consider using fillers with high thermal conductivity to improve internal heat transfer, but it seems that fillers with high thermal conductivity do not bring high heat dissipation effect to thermally conductive nylon.

Method used

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  • A kind of flame-retardant heat-conducting nylon and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] S1. Add 35kg of thermally conductive filler magnesium oxide, 12kg of negative ion powder, 1kg of coupling agent KH550, and 1kg of lubricant PETS into the high-mixer, and mix at a high speed of 1400 rpm and a temperature of 80°C for 30 minutes;

[0038] S2. Add 30kg nylon 6, 10kg antistatic resin Pebax MV1074, 10kg mass ratio of 4:1 decabromodiphenylethane and antimony oxide compound, 1kg mass ratio of 1:2 antioxidant 1076 and 168 For the compound, continue to mix at high speed for 10 minutes at a speed of 1400 rpm and a temperature of 110°C;

[0039] S3. Pelletizing the above mixture through a twin-screw extruder at a temperature of 230-290° C. and a rotation speed of 800 rpm to obtain a modified flame-retardant and heat-conducting nylon.

Embodiment 2

[0041] S1. Add 10kg of thermally conductive filler alumina, 15kg of thermally conductive filler boron carbide, 12kg of negative ion powder, 1kg of coupling agent KH550, and 1kg of amide wax into the high-mixer, and mix at a high speed of 800 rpm and a temperature of 100°C for 60 minutes;

[0042] S2. Add 25kg of nylon 66, 15kg of antistatic resin Pebax MH2202, 20kg of magnesium hydroxide, 1kg of a compound of antioxidant 1076 and 168 with a mass ratio of 1:2, and continue to operate at a high speed at a speed of 800 rpm and a temperature of 100°C. Mix for 10min,

[0043] S3. Pelletizing the above mixture through a twin-screw extruder at a temperature of 270-290° C. and a rotation speed of 200 rpm to obtain a modified flame-retardant and heat-conducting nylon.

Embodiment 3

[0045] S1. Add 20kg of thermally conductive filler alumina, 12kg of thermally conductive filler magnesia, 15kg of negative ion powder, 1kg of coupling agent KH560, and 1kg of amide wax into the high-mixer, and mix at a high speed of 1000 rpm and a temperature of 110°C for 30 minutes;

[0046] S2. Add 20kg nylon 6T, 5kg nylon 46, 15kg antistatic resin Pebax MH165, 10kg mass ratio of 4:1 decabromodiphenylethane and antimony oxide compound, 1kg mass ratio of 1:2 antioxidant For the compound of 1076 and 168, continue to mix at high speed for 30 minutes at a speed of 1000 rpm and a temperature of 110°C;

[0047] S3. Pelletizing the above mixture through a twin-screw extruder at a temperature of 300-350° C. and a rotation speed of 500 rpm to obtain a modified flame-retardant and heat-conducting nylon.

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Abstract

The invention discloses a flame-retardant heat-conducting nylon and a preparation method thereof. The flame-retardant heat-conducting nylon comprises the following components in percentage by mass: 25-30% of nylon resin, 10-15% of antistatic resin, 25-35% of heat-conducting filler, 12-15% of anion powder, 10-20% of flame retardant, 0.1-2% of coupling agent, 0.1-5% of lubricant and 0.1-2% of antioxidant. The components are granulated by a double screw extruder to prepare the modified flame-retardant heat-conducting nylon. The prepared heat-conducting nylon has the advantages of favorable toughness, favorable flame retardancy, high heat conductivity and high heat dispersion, and can be widely used in various LED (light-emitting diode) lamp shells.

Description

technical field [0001] The invention relates to the field of polymer synthesis modification and processing, in particular, the invention relates to a flame-retardant heat-conducting nylon and a preparation method thereof. Background technique [0002] At present, the new LED light source has been applied on a large scale, but a large part of the LED light is converted into heat. If it is not dissipated in time, the LED luminous efficiency will decrease or even burn out. In the early days, people processed cast aluminum into a heat-dissipating shell for LED heat dissipation. However, due to many processing steps, low efficiency and high price, it is not suitable for large-scale LED lighting production. Due to its simple molding, changeable shape, high production efficiency and low price, thermally conductive nylon can be used as LED heat dissipation shell, and it has been widely used rapidly. [0003] At present, most thermally conductive nylons are filled with a large amoun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/00C08K13/06C08K9/06C08K3/22C08K5/03C08K3/38C08L77/06C08K3/28
CPCC08K2201/014C08L77/02C08L77/06C08L2201/02C08L2201/04C08L2201/22C08L2205/02C08L2205/025C08L2205/03C08L77/00C08K13/06C08K9/06C08K3/2279C08K2003/222C08K5/03C08K3/38C08K2003/2227C08K2003/2224C08K2003/282
Inventor 廖道权林道宏
Owner 惠州市新可新材料科技有限公司
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