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Highly heat-conducting insulation engineering plastic and preparation method thereof

A technology of engineering plastics and thermal insulation, applied in organic insulators, heat exchange materials, chemical instruments and methods, etc., can solve the problems of poor corrosion resistance of metal materials, low thermal conductivity of thermally conductive materials, and decreased mechanical properties of materials, etc. The effect of increasing mechanical properties and thermal conductivity, high thermal conductivity, and increasing mechanical properties

Inactive Publication Date: 2011-09-07
GUANGDONG JANUS SMART GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional thermal conductive materials are mostly metal materials with good thermal conductivity, but due to poor corrosion resistance and difficult processing of metal materials, it is difficult to meet the application requirements under some special conditions
Due to the excellent corrosion resistance and mechanical properties of polymer materials, it is very important to use polymers as thermal conductive substrates to replace traditional metal materials in some fields that have high requirements for thermal conductivity of materials. General polymer materials The thermal conductivity is very poor, so it is necessary to improve the thermal conductivity of polymer materials
[0003] In the prior art, thermally conductive polymer materials are generally prepared by highly filling thermally conductive fillers in the presence of silane coupling agents. The thermal conductivity of the prepared thermally conductive materials is low, and the mechanical properties of the materials are seriously reduced due to the addition of a large amount of fillers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Raw material formula (g)

[0030] Polyphenylene sulfide 500

[0031] Aluminum nitride 400

[0032] Silicon carbide fiber 100

[0033] Styrene grafted maleic anhydride 25

[0034] EPDM grafted maleic anhydride 25

[0035] Fiberglass 20

[0036] Stearic acid 15

[0037] Antioxidant 1098 2.5

[0038] First dry the polyphenylene sulfide, aluminum nitride, and silicon carbide fibers in the above formula in a blast drying oven at 80°C for 5 hours, then mix the weighed raw materials in a high-speed mixer, and mix the uniform The raw materials are mixed in the internal mixer for 15 minutes, and then transferred to the hopper of the twin-screw extruder. The fibers are added from the fiberizing port, melted, extruded, and pelletized at about 260°C to obtain thermally conductive and insulating plastics that can be injection molded. The injection pressure was 165 bar and the injection time was 1.2 seconds.

[0039] The thermally conductive plastic was injection molded to pr...

Embodiment 2

[0041] Raw material formula (g)

[0042] Polyphenylene sulfide 300

[0043] Boron nitride 600

[0044] carbon fiber 100

[0045] Styrene grafted maleic anhydride 30

[0046] EPDM grafted maleic anhydride 28

[0047] Fiberglass 28

[0048] Stearic acid 25

[0049] Antioxidant 1098 3.5

[0050] First dry the polyphenylene sulfide, boron nitride, and carbon fiber in the above formula in a blast drying oven at 80°C for 5 hours, then mix the weighed raw materials in a high-speed mixer, and put the uniformly mixed raw materials in the Mix in the internal mixer for 15 minutes, then transfer to the hopper of the twin-screw extruder, add the fibers from the fiberizing port, melt, extrude, and pelletize at about 260°C to obtain thermally conductive and insulating plastics that can be injection molded. It is 165bar and the injection time is 1.2 seconds.

[0051] The plastic is injection molded into a heat-conducting plastic part. The thermal conductivity of the heat-conducting pl...

Embodiment 3

[0053] Raw material formula (g)

[0054] Polycarbonate 500

[0055] Silicon carbide 350

[0056] Alumina fiber 150

[0057] Polypropylene grafted maleic anhydride 25

[0058] EPDM grafted maleic anhydride 25

[0059] carbon fiber 20

[0060] Stearic acid 20

[0061] Antioxidant 168 2.0

[0062] First dry the polycarbonate, silicon carbide and alumina fibers in the above formula in a blast drying oven at 90°C for 6 hours, then mix the weighed raw materials in a high-speed mixer, and mix the uniform raw materials in the Mix in the internal mixer for 15 minutes, then transfer to the hopper of the twin-screw extruder, add the fibers from the fiberizing port, melt, extrude, and pelletize at about 260°C to obtain thermally conductive and insulating plastics that can be injection molded. It is 165bar and the injection time is 1.2 seconds.

[0063]The plastic is injection molded into a thermally conductive plastic part, the thermal conductivity of the thermally conductive plas...

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Abstract

The invention discloses highly heat-conducting insulation engineering plastic, which consists of the following components in part by weight: 100 parts of plastic substrate, 100 to 900 parts of heat-conducting filler, 1 to 45 parts of compatibilizer, 1 to 90 parts of toughening agent, 1 to 45 parts of reinforcing agent, 1 to 36 parts of lubricating agent and 0.3 to 5.4 parts of antioxidant. The invention also discloses a preparation method of the engineering plastic, which comprises the following steps of: drying the plastic substrate and the heat-conducting filler in a 60 to 100 DEG C air dry oven for 4 to 8 hours; putting the components into a high-speed mixer and mixing for 3 to 5 minutes; performing internal mixing on the mixture in an internal mixer for 10 to 30 minutes; and uniformly grinding the mixture in a grinder, transferring to a charging hopper of a double-screw extruder, feeding fiber fillers through a fiber inlet of the double-screw extruder, melting, mixing, extruding, cooling, drying, and pelletizing. The prepared material has high heat-conducting property and mechanical property, and is easily subjected to injection molding.

Description

technical field [0001] The invention belongs to the field of functional macromolecules, and in particular relates to an injection-molded high thermal conductivity insulating engineering plastic used for heat transfer and heat dissipation. Background technique [0002] Traditional heat-conducting materials are mostly metal materials with good thermal conductivity, but metal materials are difficult to meet the application requirements under some special conditions due to their poor corrosion resistance and difficult processing. Due to the excellent corrosion resistance and mechanical properties of polymer materials, it is very important to use polymers as thermal conductive substrates to replace traditional metal materials in some fields that have high requirements for thermal conductivity of materials. General polymer materials Thermal conductivity is poor, so it is necessary to improve the thermal conductivity of polymer materials. [0003] In the prior art, thermally condu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L67/02C08L71/12C08L81/02C08L69/00C08L51/06C08K13/04C08K7/14C08K7/06C08K7/08C08K7/10C08K3/28C08K3/34C08K3/38C08K3/22C09K5/14H01B3/30B29B9/06
Inventor 王书红张金柱
Owner GUANGDONG JANUS SMART GRP CO LTD
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