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Thermal conductive plastic and method for manufacturing mobile telephone shell by utilizing thermal conductive plastic

A technology for thermally conductive plastics and mobile phone casings, applied in the field of materials, can solve the problems that the processing mobile phone casing materials cannot meet the processing requirements, etc., and achieve the effects of avoiding burning spots, fast and uniform heat dissipation, and convenient molding and processing.

Active Publication Date: 2013-05-29
SHENZHEN FRD SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a method for preparing a heat-conducting plastic mobile phone shell and a heat-conducting plastic, aiming to solve the problem that the current processing of mobile phone shell materials cannot meet the processing requirements

Method used

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  • Thermal conductive plastic and method for manufacturing mobile telephone shell by utilizing thermal conductive plastic

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Experimental program
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Effect test

Embodiment 1

[0026] The processing technology of preparing mobile phone shell with PA6 as the base material:

[0027] PA6 35%-50%;

[0028] Alumina (Al 2 o 3 ) 15%~25%, graphite 15%~20%;

[0029] Flame retardant 5%-15%;

[0030] The amount of coupling agent A-151 is 2% of alumina.

[0031] The method for preparing a mobile phone casing by using the heat-conducting plastic includes steps: S1, mixing PA6, a flame retardant, a coupling agent A-151 and a heat-conducting filler Al 2 o 3 Mix with graphite for 10 minutes with a high mixer. S2. Extrude, granulate and dry the mixed materials to obtain heat-conducting plastic particles. Extrusion process parameters: extrusion temperature 220-270°C, main feeding frequency 8, main side feeding frequency 10.5 main engine speed 30, main engine current 28.7-29.3. Drying: drying in a forced air constant temperature drying oven at 100°C for 10 hours. S3. Using heat-conducting plastic particles for injection molding to obtain a heat-conducting plas...

Embodiment 2

[0034] Processing technology for preparing mobile phone shell with PPS as base material

[0035] PPS 30%-50%

[0036] Magnesium oxide (MgO) 30%-50%, graphite 5%~10%;

[0037] Flame retardant 5%-15%;

[0038] The dosage of coupling agent KH-560 is 0.5% of magnesium oxide.

[0039] The method for preparing a mobile phone shell using the heat-conducting plastic includes the steps: S1, mixing PPS, flame retardant, coupling agent KH-560, heat-conducting filler MgO, and graphite with a high-speed mixer for 10 minutes. S2. Extrude, granulate and dry the mixed material to obtain heat-conducting plastic particles. Process parameters: extrusion temperature is 290-330°C, main feeding frequency is 8, main side feeding frequency is 10.5, host speed is 30, Host current 28.5-29.1; Drying: Dry in a blast constant temperature drying oven at 150°C for 10 hours. S3. Using heat-conducting plastic particles for injection molding to obtain a heat-conducting plastic mobile phone case. Injection...

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Abstract

The invention discloses a thermal conductive plastic and a method for manufacturing a mobile telephone shell by utilizing the thermal conductive plastic. The thermal conductive plastic comprises the following materials in percentage by weight: 30%-70% of high polymer base material, 20%-60% of thermal conductive filler, 5%-15% of fire retardant and less than 10% of coupling agent; the high polymer base material, the thermal conductive filler and the like are mixed, extruded, pelletized and dried; and the obtained thermal conductive plastic particles are used for injection molding to obtain the thermal conductive plastic mobile telephone shell. According to the method for manufacturing mobile telephone shell by utilizing the thermal conductive plastic disclosed by the invention, special filler is added to the high polymer material, so that the weight of the manufactured mobile telephone shell is smaller than the weight of the aluminum material with the same size by 40%-50%; and the manufactured mobile telephone shell is quick and uniform in heat dissipation, so that the local deformation of the components, caused by high temperature, is reduced. Meanwhile, the thermal conductive plastic disclosed by the invention is convenient to mould and process without being secondarily processed, so that the product design freedom is high; besides, the problem that the existing mobile telephone shell processing material can not has the heat dissipation, insulating property and processing strength at the same time is well solved.

Description

technical field [0001] The invention relates to the field of materials, in particular to a heat-conducting plastic and a method for preparing a mobile phone shell by using the heat-conducting plastic. Background technique [0002] With the development of mobile phone manufacturing technology, more requirements are put forward for the materials of mobile phone shells. At present, the materials for making mobile phone shells are required to have the characteristics of high strength, good heat resistance and thermal conductivity, stable size, and good appearance. ABS, PC, PC / ABS and other engineering plastics, composite materials of alloy and carbon fiber or glass fiber, etc. In addition, some mobile phones use metal materials: magnesium, aluminum, stainless steel and other alloys. [0003] The new technology of mobile phone casing is developing towards light weight and thin wall, so as to achieve the functions of protection, heat dissipation and beauty. However, the main prob...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L69/00C08L55/02C08L77/02C08L67/02C08L81/02C08K13/02C08K3/34C08K3/22C08K3/28C08K3/04B29C47/92B29C45/76B29C48/92
CPCB29C48/04
Inventor 王美发蔡文廷张欢
Owner SHENZHEN FRD SCI & TECH
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