Halogen-free flame-retardant thermal-conductive plastic alloy and preparation method thereof

A technology of thermally conductive plastics and thermally conductive fillers, which is applied in the field of plastic alloy materials, can solve the problems such as the decline of mechanical properties of flame-retardant thermally conductive materials, and achieve the effects of reducing melt strength, improving toughness and thermal stability, and improving processing and forming performance.

Active Publication Date: 2018-06-01
GUIZHOU MATERIAL IND TECH INSTITUE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, provide a halogen-free flame-retardant heat-conducting plastic alloy and its preparation method, so as to solve the problem of the decline in the mechanical properties of the existing flame-retardant heat-conducting materials

Method used

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  • Halogen-free flame-retardant thermal-conductive plastic alloy and preparation method thereof
  • Halogen-free flame-retardant thermal-conductive plastic alloy and preparation method thereof
  • Halogen-free flame-retardant thermal-conductive plastic alloy and preparation method thereof

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preparation example Construction

[0038] This embodiment also provides a method for preparing a halogen-free flame-retardant thermally conductive plastic alloy, which includes:

[0039] Step S1: Mix the dried high-temperature-resistant polyamide resin and the halogen-free flame retardant, and then stir and mix with the polycarbonate resin, the thermally conductive filler, and the compatibilizer, during the stirring process Raise the temperature to 100-120°C to obtain a mixed base material.

[0040] Further, the water content of the dried high temperature resistant polyamide resin is lower than 0.02%.

[0041] Further, step S1 includes: stirring and mixing the dried high-temperature-resistant polyamide resin and the halogen-free flame retardant in a mixer; then adding PC resin, thermally conductive fillers and compatibilizers to the mixer, stirring and mixing Homogeneously, heat up to 100-120°C, or 105-115°C, or 110°C during stirring.

[0042] Step S2: Melt and blend the mixed base material at 300-320° C., th...

experiment example

[0055] The performance of the halogen-free flame-retardant and thermally conductive plastic alloy provided by the present invention is evaluated below in combination with the performance test data.

[0056] Sample performance test method:

[0057] Mechanical properties are tested according to GB / T10402006 standard; flammability is tested according to UL94 standard; heat distortion temperature is tested according to GB / T1634-2004 standard; thermal conductivity is tested according to ASTM E1461-07 method. The test results are shown in Table 2:

[0058] Table 2. Performance test results of thermally conductive plastic alloys

[0059]

[0060] As can be seen from the test data in Table 2, compared with Comparative Examples 1-3, the thermal conductivity of the halogen-free flame-retardant and heat-conducting plastic alloys prepared in Examples 1-5 of the present invention reaches 2.8-3.5 W / m·K, and the flame-retardant The performance reaches V-0 level, and the heat resistance ...

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Abstract

The invention provides halogen-free flame-retardant thermal-conductive plastic alloy and a preparation method thereof and relates to the field of plastic alloy materials. The halogen-free flame-retardant thermal-conductive plastic alloy is prepared from the materials in mass percent: 35 to 60% of high-temperature-resistant polyamide resin, 15 to 25% of polycarbonate resin, 10 to 20% of halogen-free flame-retardant agent, 10 to 20% of thermal-conductive filler and 1 to 5% of compatilizer. The preparation method comprises the steps: mixing the dried high-temperature-resistant polyamide resin andthe halogen-free flame-retardant agent, then stirring and mixing with the polycarbonate resin, the thermal-conductive filler and the compatilizer and warming to 100 to 120 DEG C in a stirring processto obtain a mixed base materail; melting and blending the mixed base material under 300 to 320 DEG C and extruding and granulating. The halogen-free flame-retardant thermal-conductive plastic alloy has the advantages of excellent flame retardance, thermal conductivity, mechanical property and high temperature resistance.

Description

technical field [0001] The invention relates to the field of plastic alloy materials, in particular to a halogen-free flame-retardant heat-conducting plastic alloy and a preparation method thereof. Background technique [0002] The rapid development and wide application of LED lighting have greatly stimulated the development of the upstream material industry and further promoted breakthroughs in the field of high-end materials. Heat-conducting plastics are increasingly replacing metal parts in heat-conducting parts of LED lamps, but at the same time Higher requirements are also placed on the flame retardancy, heat resistance and thermal conductivity of plastics. [0003] At present, there are not many research reports on thermal conductive materials of polymer alloys, and there are even fewer research reports on flame retardant modification of them. Patent CN201510557447.3 discloses a heat-conducting high-temperature nylon composite material and its preparation method. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L69/00C08K5/5313C08K9/02C08K9/04C08K7/24C08K3/34C08K3/04
CPCC08K2201/011C08L77/06C08L2201/02C08L2201/08C08L2201/22C08L69/00C08K5/5313C08K9/02C08K9/04C08K7/24C08K3/346C08K3/34C08K3/04
Inventor 何文涛黄伟江秦舒浩于杰龙丽娟李娟向宇姝张凯
Owner GUIZHOU MATERIAL IND TECH INSTITUE
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