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Heat-conductive and flame-retardant PET composite material and preparation method thereof

A composite material, flame retardant composite technology, applied in heat exchange materials, chemical instruments and methods, etc., can solve problems such as the limitation of PET application fields, enhance the ability of heat insulation and oxygen insulation, improve flame retardant performance, reduce additive amount of effect

Inactive Publication Date: 2018-11-16
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a thermally conductive and flame-retardant PET composite material and its preparation method to solve the problem that PET is limited in the application field

Method used

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  • Heat-conductive and flame-retardant PET composite material and preparation method thereof
  • Heat-conductive and flame-retardant PET composite material and preparation method thereof
  • Heat-conductive and flame-retardant PET composite material and preparation method thereof

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preparation example Construction

[0036] The preparation method of the boehmite thermally conductive and flame-retardant composite filler comprises the following steps:

[0037] 1) Fully mix the boehmite powder with nano-zinc sulfide, the mass ratio of boehmite to nano-zinc sulfide is (40-60):(10-20), the stirring temperature is 60-80°C, and the rotation speed is 200- Stir with a high-speed mixer at 280r / min for 40-60min to obtain mixture A.

[0038] 2) Add ammonium polyphosphate and melamine polyphosphate into step 1) mixture A, fully stir and mix for 20-40 minutes, and cool to room temperature to obtain a thermally conductive and flame-retardant composite filler; ammonium polyphosphate, melamine polyphosphate and mixture A The mass ratio is (40-60):(60-80):(30-50).

[0039] The preparation method of any one of the above-mentioned heat-conducting and flame-retardant PET composite materials comprises the following steps:

[0040] (1) Weigh 80-100 parts of PET, 16-18 parts of boehmite thermally conductive and...

Embodiment 1

[0044] (1) Weigh 80 parts of PET, 16 parts of boehmite thermally conductive and flame-retardant composite filler, 1 part of nano-titanium dioxide, 0.2 part of SEBS-g-MAH, 0.1 part of Irganox1010, mix and stir evenly to obtain a mixture;

[0045] (2) Extruding and granulating the mixture obtained in step (1) to obtain PET composite material P1.

[0046] Among them, the twin-screw extruder includes six temperature zones arranged in sequence, the temperature of the first temperature zone is 220°C, the temperature of the second temperature zone is 260°C, the temperature of the third temperature zone is 260°C, and the temperature of the fourth temperature zone is 260°C. The temperature in the temperature zone is 260°C, the temperature in the fifth temperature zone is 260°C, the temperature in the sixth temperature zone is 260°C, the head temperature of the twin-screw extruder is 260°C, and the screw speed is 200r / min.

Embodiment 2

[0048] (1) Weigh 100 parts of PET, 18 parts of boehmite thermally conductive and flame-retardant composite filler, 3 parts of nano-silica, 0.4 part of SEBS-g-MAH, 0.1 part of Irganox168, 0.2 part of Irganox1010, 0.2 part of Irganox1330, mix and stir Uniformly, get the mixture;

[0049] (2) extruding and granulating the mixture obtained in the step (1) to obtain PET composite material P2.

[0050]Among them, the twin-screw extruder includes six temperature zones arranged in sequence, the temperature of the first temperature zone is 240°C, the temperature of the second temperature zone is 280°C, the temperature of the third temperature zone is 280°C, and the temperature of the fourth temperature zone is 280°C. The temperature in the temperature zone is 280°C, the temperature in the fifth temperature zone is 280°C, the temperature in the sixth temperature zone is 280°C, the head temperature of the twin-screw extruder is 280°C, and the screw speed is 280r / min.

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Abstract

The invention relates to a heat-conductive and flame-retardant PET composite material and a preparation method thereof. The composite material comprises 80-100 parts of PET, 16-18 parts of a heat-conductive and flame-retardant boehmite composite filler, 1-3 parts of nanometer titanium dioxide, 0.2-0.4 part of a compatibilizer and 0.1-0.5 part of an antioxidant. The heat-conductive flame-retardantboehmite composite filler is used, and boehmite is a small white crystal, and has the characteristics of completeness in crystallization, fine crystal grains, few crystal structure defects and high thermal coefficient, so the heat conductivity of the PET composite material is improved; and the boehmite generates water and Al2O3 in the thermal decomposition process, the water can dilute flammable gas, and the Al2O3 solid covers the surface of a PET substrate to block and delay the burning rate, so the effects of flame retardant and smoke suppression are achieved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a heat-conducting and flame-retardant PET composite material and a preparation method thereof. Background technique [0002] PET is an engineering plastic with excellent comprehensive properties. It has good dimensional stability, good insulation, oil resistance, and good molding performance, but its flame retardancy and thermal conductivity are not good, which greatly limits its use in some fields. Applications. [0003] In view of this reason, the applicant innovatively synthesized a thermally conductive and flame-retardant composite filler, and used it to modify PET to improve the thermal conductivity and flame-retardant properties of PET composite materials. The relevant literature has not been reported in the report, which is very important. Practical significance. Contents of the invention [0004] The object of the present invention is to provide a thermally ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L51/00C08K3/22C08K3/30C08K3/32C08K5/3492C08K13/02C09K5/14
CPCC08L67/02C08K2003/2227C08K2003/2241C08K2003/3036C08K2003/323C08K2201/003C08K2201/011C08L2201/02C09K5/14C08L51/006C08K3/22C08K3/30C08K3/32C08K5/34928C08K13/02
Inventor 刘凯黄家奇霍长宏
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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