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High-efficiency composite PBT heat conduction and dispersion material, and preparation method and applications thereof

A technology of heat dissipation material and preheating temperature, which is applied in the field of high-efficiency composite PBT heat conduction and heat dissipation materials and its preparation, can solve the problems of failing to pass the UL94V0 thin-wall test standard and low flame retardant level, and achieve good mechanical properties, high insulation, and easy The effect of processing

Inactive Publication Date: 2016-03-30
DONGGUAN XUWANG PLASTIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polybutylene terephthalate (PBT) is a commonly used plastic material, but due to its low flame retardant level, it cannot pass the UL94V0 thin-wall test standard

Method used

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  • High-efficiency composite PBT heat conduction and dispersion material, and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In this example, the PBT heat conduction material is prepared from PBT with a mass ratio of 8:2 and the heat conduction masterbatch, wherein the heat conduction masterbatch is prepared from the following raw materials:

[0038] Polyester 70%

[0039] Metal oxide 20%

[0040] Nitride 10%

[0041] The preparation method is as follows:

[0042](1) Metal oxides, nitrides and polyester fibers are blended and doped at a stirring rate of 80r / min, and are extruded by a twin-screw extruder, and the preheating temperature in the screw region of the twin-screw extruder is: 200°C, the screw speed is 200r / min, and the heat conduction masterbatch is obtained;

[0043] (2) Blend and dope PBT and heat-conducting masterbatch at a stirring rate of 100r / min, and extrude using a twin-screw extruder. The preheating temperature in the screw area of ​​the twin-screw extruder is 300°C. The screw speed of the twin-screw extruder was 300r / min to obtain the PBT conduction and heat dissipation...

Embodiment 2

[0045] In this example, the PBT heat conduction material is prepared from PBT with a mass ratio of 7.5:2.5 and the heat conduction masterbatch, wherein the heat conduction masterbatch is prepared from the following raw materials:

[0046] Polyester 65%

[0047] Metal Oxide 15%

[0048] Nitride 20%

[0049] The preparation method is as follows:

[0050] (1) Metal oxides, nitrides and polyester fibers are blended and doped at a stirring rate of 80r / min, and are extruded by a twin-screw extruder, and the preheating temperature in the screw region of the twin-screw extruder is: 300°C, the screw speed is 150r / min, and the heat conduction masterbatch is obtained;

[0051] (2) Blend and dope PBT and heat-conducting masterbatch at a stirring rate of 150r / min, and extrude with a twin-screw extruder. The preheating temperature in the screw area of ​​the twin-screw extruder is 260°C. The screw speed of the twin-screw extruder is 250r / min to obtain the PBT conduction and heat dissipat...

Embodiment 3

[0053] In this example, the PBT heat conduction material is prepared from PBT with a mass ratio of 8.5:1.5 and the heat conduction masterbatch, wherein the heat conduction masterbatch is prepared from the following raw materials:

[0054] Polyester 75%

[0055] Metal Oxide 15%

[0056] Nitride 10%

[0057] The preparation method is as follows:

[0058] (1) Metal oxides, nitrides and polyester fibers are blended and doped at a stirring speed of 70r / min, and are extruded by a twin-screw extruder, and the preheating temperature of the screw region of the twin-screw extruder is: 250°C, the screw speed is 180r / min, and the heat conduction masterbatch is obtained;

[0059] (2) Blend and dope PBT and heat conduction masterbatch at a stirring rate of 150r / min, and extrude with a twin-screw extruder. The preheating temperature in the screw area of ​​the twin-screw extruder is 380°C, so The screw speed of the twin-screw extruder is 250r / min to obtain the PBT conduction and heat diss...

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Abstract

The invention provides a high-efficiency composite PBT heat conduction and dispersion material, and a preparation method and applications thereof. The high-efficiency composite PBT heat conduction and dispersion material is prepared from PBT and a heat conduction and dispersion master batch at a mass ratio of 7-9:1-3. The heat conduction and dispersion master batch is prepared from 60 to 80% of polyester fiber, 10 to 20% of a metal oxide, and 10 to 20% of a nitride. The preparation method comprises following steps: the metal oxide, the nitride, and polyester fiver are mixed, an obtained mixture is subjected to extrusion so as to obtain the heat conduction and dispersion master batch, the heat conduction and dispersion master batch is mixed with PBT, and an obtained mixed material is subjected to extrusion so as to obtain the high-efficiency composite PBT heat conduction and dispersion material. The high-efficiency composite PBT heat conduction and dispersion material is a halogen-free environment-friendly flame-retardant material, possesses excellent mechanical properties and high insulating properties, is convenient to process, is low in cost, is a heat conduction and dispersion material with excellent comprehensive properties, and can be widely applied to the fields such as LED illumination, heat conduction and heat dispersion plates, and electric products; heat conductivity coefficient is as high as 1.2W / m.k; and flame resistance is capable of reaching V0 grade.

Description

technical field [0001] The invention belongs to the field of conduction and heat dissipation materials, and relates to a PBT conduction and heat dissipation material and its preparation method and application, in particular to a high-efficiency composite PBT conduction and heat dissipation material and its preparation method and application. Background technique [0002] With the high-speed and high-power operation of various electronic components, relatively high heat energy will be generated during the use and operation of the equipment, resulting in overheating of electronic components that cannot be dissipated, thereby damaging their performance and reducing safety and reliability, and even greatly Significantly reduce the life of the entire system. Conventional engineering plastics, including thermoplastics and thermosetting plastics, have the advantages of good mechanical properties, chemical stability, and electrical insulation, and are widely used in the fields of el...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L67/00C08K3/22C08K3/28C08J3/22
CPCC08J3/226C08J2367/02C08J2467/00C08L67/02C08L2201/02C08L2201/22C08L2203/20C08L2205/02C08L67/00C08K3/36C08K2003/2241C08K3/2279C08K2003/2227C08K3/28C08K2003/282
Inventor 孔作万王来富汪志祥
Owner DONGGUAN XUWANG PLASTIC TECH CO LTD
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