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High-temperature-resistant self-lubricating wear-resistant composite material and preparation method thereof

A technology of composite materials and wear-resistant fillers, which is applied in the field of polymer wear-resistant materials, can solve problems such as adverse effects on the mechanical properties of composite materials, and achieve the effects of low wear, high mechanical properties, and excellent mechanical properties

Pending Publication Date: 2020-06-19
CHANGSHA ADVANCED MATERIALS IND RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Graphite, MoS 2 , polytetrafluoroethylene and other fillers are also common lubricating fillers in the field of composite materials, but they have adverse effects on the mechanical properties of composite materials

Method used

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  • High-temperature-resistant self-lubricating wear-resistant composite material and preparation method thereof
  • High-temperature-resistant self-lubricating wear-resistant composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Stir 50kg of polyphenylene sulfide, 5kg of silicon carbide, 5kg of polytetrafluoroethylene, and 3kg of KH550 in a mixer, and add them into the main feeding hopper of twin-screw extrusion, and mix 30kg of PAN-based chopped carbon fibers and 10kg of pitch-based carbon fibers in the mixer. Stir evenly in the feeder and add to the side feeding hopper of the twin-screw extruder.

[0034] The above mixture was extruded and granulated in a twin-screw extruder with an aspect ratio of 65, and the temperature of each section was set at 280°C, 285°C, 285°C, 300°C, 300°C, 285°C, and 285°C. Rotational speed 150rpm / min.

Embodiment 2

[0036] Stir 80kg of polyetherimide, 5kg of boron nitride, 3kg of polytetrafluoroethylene, 2kg of graphite, and 1kg of KH550 in a mixer, add them to the main feeding hopper of twin-screw extrusion, and add 10kg of PAN-based chopped carbon fibers into the twin-screw In the side feed hopper of the screw extruder.

[0037] The above mixture was extruded and granulated in a twin-screw extruder with an aspect ratio of 65, and the temperature of each stage was set at 340°C, 355°C, 365°C, 370°C, 365°C, 365°C, and 365°C. Speed ​​110rpm / min.

Embodiment 3

[0039] Stir 55kg polyether ether ketone, 5kg silicon nitride, 5kg hollow glass microspheres, 15kg polytetrafluoroethylene, 5kg silicone oil, and 3kg KH560 in a mixer, add them to the main feeding hopper of twin-screw extrusion, and mix 10kg of PAN system Chopped carbon fibers, 5kg of pitch-based carbon fibers were stirred evenly in the mixer and added to the side feeding hopper of the twin-screw extruder.

[0040] The above mixture was extruded and granulated in a twin-screw extruder with an aspect ratio of 65, and the temperature of each stage was set at 360°C, 370°C, 380°C, 390°C, 385°C, 380°C, and 375°C. Rotational speed 150rpm / min.

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PUM

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Abstract

The invention discloses a high-temperature-resistant self-lubricating wear-resistant composite material and a preparation method thereof, and belongs to the field of high polymer materials. The composite material is prepared from the following raw materials in parts by weight: 45 to 80 parts of a high-temperature thermoplastic resin, 10 to 35 parts of carbon fiber, 5-25 parts of a wear-resistant filler, 5-20 parts of a lubricant, and 0.5 to 3.0 parts of a coupling agent. The high-temperature-resistant self-lubricating wear-resistant composite material disclosed by the invention has the characteristics of excellent mechanical property, high-temperature resistance, low friction coefficient and low abrasion loss, and can be widely applied to the fields of bearings, shaft sleeves, gears, retainers and the like.

Description

technical field [0001] The invention belongs to the field of polymer wear-resistant materials, and in particular relates to a wear-resistant and high-temperature resistant self-lubricating composite material and a preparation method thereof. Background technique [0002] With the rapid development of industries such as aviation, aerospace, automobiles, ships, and machinery manufacturing, transmission components such as bearings, gears, and bushings are used more and more widely. Since these transmission parts are in the working state of high-speed rotation for a long time, this requires materials to have low friction coefficient and low wear, so as to reduce energy loss and energy consumption. [0003] The materials commonly used to manufacture transmission parts such as bearings, gears, and bushings include metal materials and polymer materials. Metal materials have a large specificity and are not suitable for precision equipment. Polymer materials have the characteristics...

Claims

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Application Information

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IPC IPC(8): C08L81/02C08L27/18C08L79/08C08L83/04C08L61/16C08L81/06C08K13/04C08K3/04C08K3/34C08K5/544C08K7/06C08K3/38C08K7/28C08K5/5435C08K3/30C08K3/28
CPCC08L81/02C08L79/08C08L61/16C08L81/06C08L2201/08C08L2205/03C08K2201/003C08K2201/004C08K2003/385C08K2003/3009C08K2003/282C08K2201/014
Inventor 熊平范骁陈珏
Owner CHANGSHA ADVANCED MATERIALS IND RES INST CO LTD
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