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A three-dimensional thermally conductive mesophase carbon microsphere filled polypropylene composite material and its preparation method

A technology of mesocarbon microspheres and composite materials, which is applied in the field of three-dimensional heat-conducting mesocarbon microspheres filled with modified polypropylene materials and its preparation, can solve problems affecting the range of use and service life, and achieve extensive social and economic benefits , low cost, and the effect of improving bending strength

Active Publication Date: 2021-03-26
ORINKO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some electronic and electrical products tend to generate a lot of heat during use, while the thermal conductivity of polypropylene is only 0.21-0.26W / m K, which affects its range of use and service life

Method used

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  • A three-dimensional thermally conductive mesophase carbon microsphere filled polypropylene composite material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The mesophase carbon microsphere filled polypropylene material in this embodiment is composed of the following raw materials by weight:

[0031] 90 parts of short-chain copolymerized polypropylene

[0032] Graphitized mesophase carbon microspheres 10 parts

[0033] Antioxidant 1076 0.3 parts

[0034] Antioxidant 168 0.2 parts

[0035] Light stabilizer 326 0.5 parts

[0036] Calcium stearate 0.3 parts

[0037] Concrete preparation method comprises the following steps:

[0038] (1) Add 90 parts of polypropylene resin, 10 parts of graphitized mesophase carbon microspheres, 0.3 parts of antioxidant 1076, 0.2 parts of antioxidant 168, 0.5 parts of light stabilizer and 0.3 parts of lubricant into a high-speed mixer Mix in medium for 5-10 minutes;

[0039] (2) Add the materials in step (1) into the intermeshed parallel co-rotating twin-screw extruder through the main feeding hopper. Among them, the barrel temperature of the extruder is 190-220°C, the screw speed is 350-...

Embodiment 2

[0041] The mesophase carbon microsphere filled polypropylene material in this embodiment is composed of the following raw materials by weight:

[0042] 90 parts of short-chain copolymerized polypropylene

[0043] Graphitized mesophase carbon microspheres 10 parts

[0044] Antioxidant 1076 0.3 parts

[0045] Antioxidant 168 0.2 parts

[0046] Light stabilizer 326 1 part

[0047] Calcium stearate 0.6 part

[0048] Concrete preparation method comprises the following steps:

[0049] (1) Add 90 parts of polypropylene resin, 10 parts of graphitized mesophase carbon microspheres, 0.3 parts of antioxidant 1076, 0.2 parts of antioxidant 168, 1 part of light stabilizer and 0.6 parts of lubricant into a high-speed mixer Mix in medium for 5-10 minutes;

[0050] (2) Add the materials in step (1) into the intermeshed parallel co-rotating twin-screw extruder through the main feeding hopper. Among them, the barrel temperature of the extruder is 190-220°C, the screw speed is 350-400r / mi...

Embodiment 3

[0052] The mesophase carbon microsphere filled polypropylene material in this embodiment is composed of the following raw materials by weight:

[0053] 80 parts of short-chain copolymerized polypropylene

[0054] 20 parts of graphitized mesophase carbon microspheres

[0055] Antioxidant 1076 0.1 parts

[0056] Antioxidant 168 0.1 parts

[0057] Light stabilizer 326 0.5 parts

[0058] Calcium stearate 0.5 part

[0059] Concrete preparation method comprises the following steps:

[0060] (1) Add 80 parts of polypropylene resin, 20 parts of graphitized mesophase carbon microspheres, 0.1 part of antioxidant 1076, 0.1 part of antioxidant 168, 0.5 part of light stabilizer and 0.5 part of lubricant into a high-speed mixer Mix in medium for 5-10 minutes;

[0061] (2) Add the materials in step (1) into the intermeshed parallel co-rotating twin-screw extruder through the main feeding hopper. Among them, the barrel temperature of the extruder is 190-220°C, the screw speed is 350-40...

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Abstract

The invention discloses a three-dimensional heat-conductive mesocarbon microbead filled polypropylene composite and a preparation method thereof. The three-dimensional heat-conductive mesocarbon microbead filled polypropylene composite is prepared from the following components in parts by weight: 70-90 parts of polypropylene, 10-30 parts of graphitized mesocarbon microbeads, 0.2-0.5 part of an antioxidant, 0.3-0.6 part of a lubricant and 0.5-1 part of a light stabilizer. As for a graphitized mesocarbon microbead heat-conductive reinforced polypropylene material prepared by the invention, by adopting a melt compounding method, the periphery of the mesocarbon microbeads is wrapped with short chain co-polypropylene to generate the island effect, and thus the tensile strength and the bending strength of the polypropylene composite are improved; and meanwhile, the mesocarbon microbeads are micron-size spheres formed by a flake structure, the coefficient of thermal conductivity of the mesocarbon microbeads is between 1600W / m<-K> and 2000W / m<-K> after the mesocarbon microbeads are subjected to graphitization treatment, and thus the heat conduction property of the polypropylene composite can be remarkably improved.

Description

Technical field: [0001] The invention relates to the technical field of polymer composite materials, in particular to a three-dimensional heat-conducting mesophase carbon microsphere filled modified (heat-conducting, reinforced) polypropylene material and a preparation method thereof. Background technique: [0002] Polypropylene (PP) is a crystalline polymer with a regular structure. It is a thermoplastic resin with white particles, odorless, non-toxic, and light weight. It has the advantages of easy processing, impact strength, flexibility, and electrical insulation. It is commonly used The filler materials are talcum powder and calcium carbonate. Some electronic and electrical products tend to generate a lot of heat during use, but the thermal conductivity of polypropylene is only 0.21-0.26W / m·K, which affects its range of use and service life. [0003] Mesophase carbon microspheres (MCMB) are a new type of functional material, which is a discotic nematic liquid crystal s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08K13/06C08K9/02C08K3/04C09K5/14
CPCC08K3/04C08K9/02C08K13/06C08K2201/003C09K5/14C08L23/14
Inventor 何自国张奎徐剑胡林汪鹏程李荣群
Owner ORINKO NEW MATERIAL CO LTD