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Spherical aluminum nitride-expanded graphite reinforced high-thermal-conductivity PP/PA6 composite material and preparation method thereof

A technology of expanded graphite and composite materials, which is applied in the field of spherical aluminum nitride-expanded graphite reinforced high thermal conductivity PP/PA6 composite materials and its preparation, can solve the problems of high cost, narrow application range, mechanical strength and durability of PBT and PPS plastics. The temperature capacity cannot meet the demand and other problems, and achieve the effects of low cost, wide application range, improved mechanical properties and thermal conductivity

Inactive Publication Date: 2018-07-03
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Polypropylene (PP) has the characteristics of low price, light specific gravity, and corrosion resistance. Improving its thermal conductivity can further expand its application in the fields of electronics, industry, and civil use; however, when it comes to parts with certain heat conduction or heat dissipation functions , the mechanical strength and temperature resistance of PP cannot meet the demand
CN105255184A discloses "a kind of PPS / PBT composite thermally conductive plastic filled with nanometer aluminum nitride-expanded graphite for LED and its preparation method", by adding aluminum nitride-expanded graphite thermally conductive filler in PBT and PPS plastics to improve composite The thermal conductivity of the material, but the cost of PBT and PPS plastics is high and the application range is relatively narrow

Method used

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  • Spherical aluminum nitride-expanded graphite reinforced high-thermal-conductivity PP/PA6 composite material and preparation method thereof
  • Spherical aluminum nitride-expanded graphite reinforced high-thermal-conductivity PP/PA6 composite material and preparation method thereof
  • Spherical aluminum nitride-expanded graphite reinforced high-thermal-conductivity PP/PA6 composite material and preparation method thereof

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preparation example Construction

[0031] The present invention also discloses a method for preparing the above-mentioned spherical aluminum nitride-expanded graphite reinforced high thermal conductivity PP / PA6 composite material, comprising the following steps:

[0032] (1) Take PA6 resin, PP resin, expanded graphite, spherical aluminum nitride, compatibilizer and antioxidant of described weight part respectively, stand-by;

[0033] (2) Add PA6 resin, expanded graphite and spherical aluminum nitride to the twin-screw extruder, and melt and extrude to obtain premix one; add PP resin, compatibilizer and antioxidant to the twin-screw extruder In the machine, melt extrusion to obtain premix two;

[0034] (3) Add the premix 1 and the premix 2 into a twin-screw extruder, and melt extrude to obtain the high thermal conductivity PP / PA6 composite material; the screw speed is 350r / min , the temperature is 200°C-240°C.

[0035] PP material is widely used due to its advantages of low cost, light weight, and easy process...

Embodiment 1

[0041] The high thermal conductivity PP / PA6 composite material of the present embodiment is made of raw materials comprising the following parts by weight:

[0042]

[0043] Among them, the thermally conductive filler includes 15 parts of expanded graphite and 10 parts of spherical aluminum nitride, the particle sizes of which are 1250 mesh and 250 mesh respectively; the compatibilizer is 3 parts of maleic anhydride grafted polypropylene and 2 parts of SEBS grafted maleic acid A blend of anhydride copolymers; the antioxidant is a blend of 0.3 parts of Antioxidant 1010 and 0.5 parts of Antioxidant 168.

[0044]The preparation method of a kind of spherical aluminum nitride-expanded graphite reinforced high thermal conductivity PP / PA6 composite material of embodiment 1 comprises the following steps:

[0045] (1) Add the weighed PA6 resin, expanded graphite and spherical aluminum nitride into the twin-screw extruder, and melt and extrude to obtain premix one; and the weighed PP...

Embodiment 2

[0048] The high thermal conductivity PP / PA6 composite material of the present embodiment is made of raw materials comprising the following parts by weight:

[0049]

[0050] Among them, the thermally conductive filler includes 5 parts of expanded graphite and 20 parts of spherical aluminum nitride, the particle sizes of which are 1250 mesh and 250 mesh respectively; the compatibilizer is 3 parts of maleic anhydride grafted polypropylene and 2 parts of SEBS grafted maleic acid A blend of anhydride copolymers; the antioxidant is a blend of 0.3 parts of Antioxidant 1010 and 0.5 parts of Antioxidant 168.

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Abstract

The invention discloses a spherical aluminum nitride-expanded graphite reinforced high-thermal-conductivity PP / PA6 composite material, which is prepared from the following raw materials by weight: 30-70 parts of a PA6 resin, 10-30 parts of a PP resin, 10-20 parts of expanded graphite, 5-15 parts of spherical aluminum nitride, 5-12 parts of a compatibilizer, and 0.2-0.8 part of an antioxidant. Theinvention further discloses a preparation method of the PP / PA6 composite material. According to the present invention, the composite material has the high-temperature resistance of PA6 and the excellent processing performance of PP, can replace aluminum materials in the field of LED illumination, can further be used in other industrial fields with high requirements on mechanical properties and thermal conductivity, and has advantages of low density, good mechanical property, high thermal conductivity, low cost and wide application range.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, in particular to a spherical aluminum nitride-expanded graphite reinforced high thermal conductivity PP / PA6 composite material and a preparation method thereof. Background technique [0002] Compared with metal materials, polymer materials have the advantages of chemical corrosion resistance, molding processing, good insulation and light weight, and can replace metal materials in practical applications in heat exchange engineering, heating engineering, electronic information engineering, LED lights, etc., so The development of new polymer materials with good thermal conductivity has become an important development direction of thermal conductivity materials. [0003] Polypropylene (PP) has the characteristics of low price, light specific gravity, and corrosion resistance. Improving its thermal conductivity can further expand its application in the fields of electronics, indust...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L23/12C08L51/06C08L51/00C08K13/04C08K7/24C08K7/18B29C47/92B29C48/92
CPCB29C48/92B29C2948/9259B29C2948/92704C08K2201/003C08L77/02C08L2201/08C08L2205/02C08L2205/035C08L2205/08C08L23/12C08L51/06C08L51/003C08K13/04C08K7/24C08K7/18
Inventor 杨桂生崔谢亮李兰杰
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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