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A kind of halogen-free flame-retardant heat-conducting plastic alloy and preparation method thereof

A technology of thermally conductive plastics and thermally conductive fillers, applied in the field of plastic alloy materials, can solve problems such as the decline of mechanical properties of flame-retardant thermally conductive materials, and achieve the effects of reducing melt strength, ensuring flame-retardant effect, and improving rigidity and chemical resistance.

Active Publication Date: 2020-09-22
GUIZHOU MATERIAL IND TECH INSTITUE
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  • Description
  • Claims
  • Application Information

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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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  • A kind of halogen-free flame-retardant heat-conducting plastic alloy and preparation method thereof
  • A kind of halogen-free flame-retardant heat-conducting plastic alloy and preparation method thereof
  • A kind of halogen-free flame-retardant heat-conducting 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 Patents(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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