Heat-conducting plastic cement and moulding method thereof

A thermally conductive plastic, high thermal conductivity technology, applied in chemical instruments and methods, heat exchange materials, etc., can solve problems such as failure to meet design requirements, existence of production processes, environmental pollution, etc., achieve good thermal conductivity, convenient molding and processing, Avoid hot spots

Inactive Publication Date: 2020-01-14
苏州兆如电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The radiators and casings in the prior art are usually made of aluminum; the aluminum is usually made of aluminum-magnesium alloy; they have the following characteristics: 1. The product is heavy; 2. There are potential safety hazards in the production process 3. Pollution to the environment; 4. High cost; in recent years, some people want to replace it with injection molded parts. Insufficient, unable to meet design needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A thermally conductive plastic, with nylon PA6 / PA66 as the base material, aluminum nitride AlN, silicon carbide SiC, silicon trioxide Al 2 O 3 , graphite, fibrous high thermal conductivity carbon powder, and flake-like high thermal conductivity carbon powder are mixed as fillers. According to the weight ratio, the nylon PA6 / PA66 accounts for 55%, the aluminum nitride AlN accounts for 5%, and the carbonized carbon powder accounts for 5%. Silicon SiC accounts for 5%, the silicon trioxide Al 2 O 3 accounted for 8%, the graphite accounted for 12%; the fibrous high thermal conductivity carbon powder accounted for 7%; the scaly high thermal conductivity carbon powder accounted for 8%.

[0019] The molding method of the thermally conductive plastic includes the following steps:

[0020] A. Thermally conductive plastic baking material: first heat for 4-6H at a temperature of 110°C, spare;

[0021] B, mold temperature: 60-100 °C, material temperature: 240-300 °C; back pressu...

Embodiment 2

[0024] A thermally conductive plastic, with nylon PA6 / PA66 as the base material, aluminum nitride AlN, silicon carbide SiC, silicon trioxide Al 2 O 3 , graphite, fibrous high thermal conductivity carbon powder, and flake-like high thermal conductivity carbon powder are mixed as fillers. According to the weight ratio, the nylon PA6 / PA66 accounts for 50%, the aluminum nitride AlN accounts for 5%, and the carbonized carbon powder accounts for 5%. Silicon SiC accounts for 6%, the silicon trioxide Al 2 O 3 accounted for 8%, the graphite accounted for 15%; the fibrous high thermal conductivity carbon powder accounted for 8%; the scaly high thermal conductivity carbon powder accounted for 8%.

[0025] The molding method of the thermally conductive plastic includes the following steps:

[0026] A. Thermally conductive plastic baking material: first heat for 4-6H at a temperature of 120°C, spare;

[0027] B, mold temperature: 80-100 ° C, material temperature: 280-300 ° C; back pres...

Embodiment 3

[0030] A thermally conductive plastic, with nylon PA6 / PA66 as the base material, aluminum nitride AlN, silicon carbide SiC, silicon trioxide Al 2 O 3 , graphite, fibrous high thermal conductivity carbon powder, and flake-like high thermal conductivity carbon powder are mixed as fillers. According to the weight ratio, the nylon PA6 / PA66 accounts for 60%, the aluminum nitride AlN accounts for 3%, and the carbonized carbon powder accounts for 3%. Silicon SiC accounts for 4%, the silicon trioxide Al 2 O 3 accounted for 5%, the graphite accounted for 15%; the fibrous high thermal conductivity carbon powder accounted for 6%; the scaly high thermal conductivity carbon powder accounted for 7%.

[0031] The molding method of the thermally conductive plastic includes the following steps:

[0032] A. Thermally conductive plastic baking material: first heat for 4-6H at a temperature of 130°C, spare;

[0033] B, mold temperature: 90-100 °C, material temperature: 290-300 °C; back pressu...

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PUM

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Abstract

The invention discloses a heat-conducting plastic cement and a moulding method thereof. Nylon PA6 / PA66 is used as a base material of the heat-conducting plastic cement. The heat-conducting plastic cement is prepared by mixing aluminum nitride AlN, silicon carbide SiC, silicon trioxide Al2O3, graphite, fibrous high-thermal-conductivity carbon powder and scaly high-thermal-conductivity carbon powderwhich are used as fillers; wherein the nylon PA6 / PA66 accounts for 50 to 60wt%, the aluminum nitride AlN accounts for 3 to 5wt%, the silicon carbide SiC accounts for 4 to 6wt%, the silicon trioxide Al2O3 accounts for 5 to 8wt%, the graphite accounts for 10 to 15wt%; the fibrous high-thermal-conductivity carbon powder accounts for 6-10wt%; the scaly high-thermal-conductivity carbon powder accountsfor 6-10wt%. The moulding method of the heat-conducting plastic cement comprises the following steps: A, drying the heat-conducting plastic cement materials, wherein heating for 4-6H at the temperature of 110-130 DEG C for later use; B, by adopting following parameters, carrying out injection molding at the mold temperature of 60-100 DEG C, and the material temperature at 240-300 DEG C; the backpressure of 1-3 atmospheric pressures. Due to the application of the technical scheme, the product manufactured by the invention has the advantages of good heat-conducting property, low specific gravity and good portability; and the production period is short, insulation treatment is not needed, and the production cost is low.

Description

technical field [0001] The invention relates to the improvement of a material and a molding method for a heat-dissipating product, in particular to a product that can replace aluminum-magnesium alloy processing and forming, and the product produced by the product has good heat dissipation, light weight, portability, transportation cost and short production cycle. , A thermally conductive plastic and a molding method thereof that do not require insulation treatment and have low production cost. Background technique [0002] The radiators, casings, etc. in the prior art are usually made of aluminum materials; the aluminum materials are usually made of aluminum-magnesium alloys; they have the following characteristics: 1. The weight of the product is relatively heavy; 2. There are potential safety hazards in the production process 3. Pollution to the environment; 4. High cost; In recent years, some people want to replace it with injection molding parts, but the injection moldin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08K3/28C08K3/34C08K3/22C08K3/04C08K7/06C08K7/00C09K5/14B29C45/00
CPCB29C45/0013C08K2003/2227C08K2003/282C08L77/02C08L77/06C08K13/04C08K3/28C08K3/34C08K3/22C08K3/04C08K7/06C08K7/00
Inventor 唐宏军
Owner 苏州兆如电子有限公司
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