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Glass fibre reinforced polyetherimide composite material and preparation method thereof

A polyetherimide and composite material technology, which is applied in the field of glass fiber reinforced polyetherimide composite material and its preparation, can solve the problems of poor processing fluidity, high processing technology requirements, large wear and tear of processing equipment, etc. Melt viscosity, easy operation and effect of overcoming wear

Inactive Publication Date: 2010-10-27
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, glass fiber reinforced PEI composite materials have poor processing fluidity, high requirements for processing technology and great wear and tear on processing equipment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The glass fiber reinforced polyetherimide composite material of Example 1 is made of the following raw materials in parts by weight:

[0026] Polyetherimide Ultem 1000 83.8 parts (parts by weight, the same below), 5 parts of Ticona Vectra type thermotropic liquid crystal polymer, 10 parts of glass fiber FT756X, four (β-(3,5-di-tert-butyl-4) -Hydroxyphenyl) propionic acid) pentaerythritol ester 0.2 parts, tris(2.4-di-tert-butylphenyl) phosphite 0.2 parts, polysiloxane 0.5 parts, pentaerythritol stearate 0.3 parts.

[0027] Preparation method: weigh polyetherimide, thermotropic liquid crystal polymer, tetrakis(β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid) pentaerythritol ester, tris(2.4-di-tert-butyl) (Phenyl) phosphite, polysiloxane, pentaerythritol stearate, and put them in a medium-speed mixer for 15 minutes to mix and process, add the glass fiber by side feeding, melt blending, and extrude Produced and granulated into composite materials. The temperature of each z...

Embodiment 2

[0028] The glass fiber reinforced polyetherimide composite material of Example 2 is made of the following raw materials in parts by weight:

[0029] Polyetherimide Ultem 2000 69.45 parts, Ticona Vectra type thermotropic liquid crystal polymer 10 parts, glass fiber FT756X 20 parts, 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethyl Benzyl)-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione 0.05 parts, polysiloxane 0.5 parts.

[0030] Preparation method: Weigh polyetherimide, thermotropic liquid crystal polymer, 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3, 5-triazine-2,4,6-(1H,3H,5H)-triketone, polysiloxane, and put them in a medium-speed mixer for 15 minutes to mix and process, the glass fiber is fed by side Join, melt and blend, extrude and granulate into composite material. The temperature of each zone is 290℃ in one zone, 300℃ in two zone, 310℃ in three zone, 320℃ in four zone, 310℃ in five zone, residence time of 3min and pressure of 16MPa.

Embodiment 3

[0031] The glass fiber reinforced polyetherimide composite material of Example 3 is made of the following raw materials in parts by weight:

[0032] 53.8 parts of polyetherimide, 15 parts of Polyplastics Vectra type thermotropic liquid crystal polymer, 91030 parts of glass fiber, N,N'-1,6-hexylene-bis[3-(3,5-di-tert-butyl -4-hydroxyphenyl) propionamide] 0.2 parts, tris(2.4-di-tert-butylphenyl) phosphite 0.2 parts, polysiloxane 0.8 parts.

[0033] Preparation method: Weigh polyetherimide, thermotropic liquid crystal polymer, N,N'-1,6-hexylene-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl) Propionamide], tris(2.4-di-tert-butylphenyl) phosphite, polysiloxane, and place them in a medium-speed mixer for 15 minutes. Add the glass fiber by side feeding. Melt blending, extrusion granulation into composite materials. The temperature of each zone is: 290℃ in one zone, 310℃ in two zone, 320℃ in three zone, 330℃ in four zone, 320℃ in five zone, residence time 3min, pressure 15MPa.

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Abstract

The invention discloses a glass fibre reinforced polyetherimide composite material and a preparation method thereof. The glass fibre reinforced polyetherimide composite material is prepared from the following raw materials in parts by weight: 27.4 to 93.8 parts of polyetherimide, 1 to 20 parts of thermotropic liquid crystal polymer, 5 to 50 parts of glass fibre, 0.05 to 0.6 part of antioxidant and 0.1 to 2 parts of lubricant. Compared with the prior art, the viscosity of a melt can be effectively lowered when the composite material is processed because the thermotropic liquid crystal polymer has very strong rheological property of shear thinning in the melt extrusion process of the thermotropic liquid crystal polymer and the polyetherimide, and the flow rate of the melt is enhanced so as to improve the processing performance of the material. In addition, the thermotropic liquid crystal polymer can form a microfibrillar structure in a polyetherimide matrix, and the strength of the composite material is enhanced. The production and preparation process of the composite material is simple and can be executed on a conventional melt extrusion machine without special equipment, and the operation process is simple and easy.

Description

[Technical Field] [0001] The invention relates to the technical field of polymer materials, in particular to a glass fiber reinforced polyetherimide composite material and a preparation method thereof. [Background technique] [0002] Polyetherimide resin (referred to as PEI) is an amorphous thermoplastic resin with excellent mechanical properties, electrical insulation properties, radiation resistance, high and low temperature resistance and abrasion resistance. Polyetherimide has excellent comprehensive balance properties, and has been effectively used in electronics, electrical and aviation industries, and used as a metal substitute for traditional products and cultural and daily necessities. However, glass fiber-reinforced PEI composites have poor processing fluidity, require high processing technology and wear processing equipment. [Summary of the Invention] [0003] The technical problem to be solved by the present invention is to provide a glass fiber reinforced polyetherim...

Claims

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Application Information

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IPC IPC(8): C08L79/08C08L67/00C08K13/06C08K9/06C08K9/04C08K7/14B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/875B29C48/92B29C2948/92514B29C2948/92704B29C2948/92895
Inventor 徐东徐永谢建达
Owner SHENZHEN KEJU NEW MATERIAL
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