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Polyethylene terephthalate composite material and preparation method thereof

A technology of polyethylene terephthalate and composite materials, applied in the field of engineering plastics, can solve problems such as poor repeatability, high cost, and harsh conditions for continuous fiber reinforcement, so as to improve interface adhesion and improve mechanical properties. The effect of performance and thermal performance

Inactive Publication Date: 2011-10-12
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the harsh conditions of the continuous fiber reinforcement process, the repeatability is poor and the cost is high

Method used

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  • Polyethylene terephthalate composite material and preparation method thereof
  • Polyethylene terephthalate composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] ①The weight percentage of PET is 89%, chopped carbon fiber without surface treatment 10%, tetrakis (β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester 0.05%, three ( 2,4-di-tert-butylphenyl) phosphite 0.05%, dry-mixed at room temperature for 5 minutes in a high-speed mixer;

[0027] ②The twin-screw extruder is melt-extruded and granulated to make composite materials. The heating zones of the screw are: Zone 1 245°C, Zone 2 255°C, Zone 3 260°C, Zone 4 265°C, Zone 5 270°C, the head temperature is 260°C; the screw speed is 50 rpm; the feeding speed is 15 rpm.

Embodiment 2

[0029] ①The weight percentage of PET is 84%, chopped carbon fiber without surface treatment 15%, tetrakis (β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester 0.05%, three ( 2,4-di-tert-butylphenyl) phosphite 0.05%, dry-mixed at room temperature for 5 minutes in a high-speed mixer;

[0030] ②The twin-screw extruder is melt-extruded and granulated to make composite materials. The heating zones of the screw are: Zone 1 245°C, Zone 2 255°C, Zone 3 260°C, Zone 4 265°C, Zone 5 270°C, the head temperature is 260°C; the screw speed is 50 rpm; the feeding speed is 15 rpm.

example 3

[0032] ①At a temperature of 100°C, after immersing the carbon fiber in sulfuric acid for 1 hour, spray a titanate coupling agent on the surface of the carbon fiber;

[0033] ②The weight percentage of PET is 89%, the chopped carbon fiber after treatment is 10%, tetrakis (β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester 0.5%, three (2, 4-di-tert-butylphenyl) phosphite 0.5% and dry-mixed at room temperature for 5 minutes in a high-speed mixer;

[0034] ③The twin-screw extruder is melt-extruded and granulated to make composite materials. The heating zones of the screw are: Zone 1 245°C, Zone 2 255°C, Zone 3 260°C, Zone 4 265°C, Zone 5 270°C, the head temperature is 260°C; the screw speed is 50 rpm; the feeding speed is 15 rpm.

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Abstract

The invention discloses a polyethylene terephthalate composite material comprising the following components in percentage by weight: 69-97% of polyethylene terephthalate, 2-30% of carbon fiber, 0.5-5% of nucleating agent, 0.1-1% of coupling agent, 0.01-0.1% of antioxidant and the balance of surface treatment agent of carbon fiber. The polyethylene terephthalate composite material provided by the invention has the advantages of high tensile strength, high flexural strength and good heat resistance and serves as engineering plastics with excellent mechanical property and heat property.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, in particular to a polyethylene terephthalate (PET) composite material and a preparation method thereof. Background technique [0002] As a new material with high strength, light weight, and designable functions and structures, thermosetting resin-based composites have long been widely recognized by the engineering community, but there are still some shortcomings, such as poor heat resistance, low impact resistance and damage resistance, and harsh storage conditions. wait. [0003] Carbon fiber reinforced PET composites have the following properties, which provide ideas for solving the above problems: [0004] High specific stiffness and specific strength; good toughness and good impact resistance; no chemical reaction occurs during processing, and the molding cycle is short; the molding process of parts is simplified, and the manufacturing cost is low; there is no storage condition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K13/06C08K9/06C08K9/04C08K9/02C08K7/06B29B9/06B29C47/92B29C48/92
CPCB29C48/92B29C2948/92561B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895B29C2948/92904
Inventor 吴唯石品品陈玉姜煌李治
Owner EAST CHINA UNIV OF SCI & TECH
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