High abrasion polyetherimide composite material and method for preparing same

A technology of polyetherimide and composite materials, which is applied in the field of engineering plastics, can solve the problems of polyetherimide with large friction coefficient, low friction coefficient, and small wear, and achieve improved comprehensive performance, simple preparation process, and reduced friction The effect of the coefficient

Active Publication Date: 2013-02-27
GUANGZHOU SUPER DRAGON ENG PLASTICS
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the first invention of the present invention is to overcome the deficiencies and defects of the current technology, solve the shortcomings of polyetherimide with large friction coefficient and high wear, and provide a high wear-resistant polyetherimide with low friction coefficient and small wear composite material

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High abrasion polyetherimide composite material and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Proportioning is carried out according to the following composition by mass percentage: 98.5% of polyetherimide, 1% of polytetrafluoroethylene, and 0.5% of lubricant.

[0027] First place the polyetherimide in a vacuum oven at 150°C to dry for 4 hours, then add the accurately weighed polyetherimide, polytetrafluoroethylene, and lubricant into a high-speed mixer and stir for 5 minutes.

[0028] Add the above-mentioned materials that have been stirred evenly into the hopper of the parallel twin-screw extruder, and set the temperature of each section of the extruder from the hopper to the die head (six zones in total): 260°C, 310°C, 330°C, 350°C ℃, 350℃, 340℃, the screw speed of the main engine is 280r / min, the speed of the hopper feeding screw is 26r / min, and then the materials are blended and melted and extruded;

[0029] The above-mentioned strips coming out of the die of the extruder are transported to the pelletizer through a steel conveyor belt for pelletizing, and a...

Embodiment 2

[0031] Proportioning is carried out according to the following composition by mass percentage: 96.5% of polyetherimide, 3% of polytetrafluoroethylene, and 0.5% of lubricant.

[0032] First place the polyetherimide in a vacuum oven at 170°C to dry for 4 hours, then add the accurately weighed polyetherimide, polytetrafluoroethylene, and lubricant into a high-speed mixer and stir for 8 minutes;

[0033] Add the above-mentioned materials that have been stirred evenly into the hopper of the parallel twin-screw extruder, and set the temperature of each section of the extruder from the hopper to the die head (six zones in total): 270°C, 310°C, 330°C, 340°C ℃, 340℃, 360℃, the screw speed of the main engine is 280r / min, the speed of the hopper feeding screw is 29r / min, and then the materials are blended and melted and extruded;

[0034] The above-mentioned strips coming out of the die of the extruder are transported to the pelletizer through a steel conveyor belt for pelletizing, and a...

Embodiment 3

[0036] Proportioning is carried out according to the following composition by mass percentage: 94.2% of polyetherimide, 5% of polytetrafluoroethylene, and 0.8% of lubricant.

[0037] First place the polyetherimide in a vacuum drying oven at 180°C to dry for 4 hours, then add the accurately weighed polyetherimide, polytetrafluoroethylene, and lubricant into a high-speed mixer and stir for 5 minutes;

[0038] Add the above-mentioned materials that have been stirred evenly into the hopper of the parallel twin-screw extruder, and set the temperature of each section of the extruder from the hopper to the die head (six zones in total): 290°C, 320°C, 350°C, 350°C ℃, 350℃, 360℃, the screw speed of the main engine is 330r / min, the speed of the hopper feeding screw is 35r / min, and then the materials are blended and melted and extruded;

[0039] The above-mentioned strips coming out of the die of the extruder are transported to the pelletizer through a steel conveyor belt for pelletizing...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a high abrasion polyetherimide composite material. The high abrasion polyetherimide composite material consists of the following materials in percentage by weight: 80-99% of polyetherimide, 0.5-20% of polytetrafluoroethylene and 0.5-2.5% of lubricating agent. The invention further discloses a method for preparing the high abrasion polyetherimide composite material. According to the high abrasion polyetherimide composite material, polytetrafluoroethylene is adopted to improve the friction performance of polyetherimide, on one hand, the friction factor of the composite material can be greatly reduced, the abrasion loss is reduced, and moreover, the other physical and mechanical performances of the composite material cannot be influenced; and on the other hand, compared with the friction materials of graphite, molybdenum disulfide and the like, polytetrafluoroethylene is white, so that the high abrasion polyetherimide composite material can be conveniently dyed into other colors.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, in particular to a high wear-resistant polyetherimide composite material and a preparation method thereof. Background technique [0002] Polyetherimide (referred to as PEI) is a thermoplastic special engineering plastic with good thermal stability, a glass transition temperature of 215°C, and a continuous use temperature of 170°C; it also has excellent flame retardancy (oxygen index Greater than 47, low smoke generation), strong toughness, radiation resistance and chemical resistance, in addition to good dielectric properties, stable dielectric constant and dielectric loss values ​​in a wide range of frequencies and temperatures and Very high dielectric strength. PEI products are widely used in aviation, aerospace, electrical appliances, machinery, chemicals, microelectronics and other fields. Due to its special properties, it is often selected as engineering structural materials, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08L79/08C08L27/18C08L83/04C08K5/103C08G73/10B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895B29C2948/92904
Inventor 郝源增任萍郝建鑫袁海兵
Owner GUANGZHOU SUPER DRAGON ENG PLASTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap