High strength wearable polyamide composite material and preparation method thereof

A technology of wear-resistant polyamide and composite materials, applied in the field of polymer materials, can solve problems such as difficult high-speed friction, poor dimensional stability, and high water absorption of nylon materials, and achieve the effects of saving production costs, high strength, and reducing production difficulty

Inactive Publication Date: 2014-07-02
JIANGSU KANGFEITE POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high water absorption of nylon material, poor dimensional stability, and insufficient dry friction coefficient, it is difficult to be used as a high-speed friction material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A. Prepare raw materials for granulation, weigh 50 parts of nylon 66 resin with a melting point above 210°C and a viscosity index of 2.3, 19 parts of nylon 1010 resin with a melting point above 220°C and a viscosity index of 2.5, and silane coupling 0.5 parts of agent, 6 parts of polytetrafluoroethylene, 18.2 parts of aluminum hydroxide, 5 parts of molybdenum disulfide and 15.5 parts of chopped glass fibers of 3 mm, 0.3 parts of antioxidant, put into a high-speed mixer and mix for 10 minutes to obtain raw material;

[0024] B. Put the obtained raw materials for granulation into a twin-screw extruder for melt extrusion, and control the temperature of the first zone to the sixth zone of the twin-screw extruder: 235°C for the first zone, 240°C for the second zone, and 240°C for the third zone. The fourth zone is 245°C, the fifth zone is 240°C, and the sixth zone is 230°C to obtain high-strength and wear-resistant polyamide composite materials.

Embodiment 2

[0026] A. Prepare raw materials for granulation, weigh 52 parts of nylon 66 resin with a melting point above 210°C and a viscosity index of 2.3, 17 parts of nylon 1010 resin with a melting point above 220°C and a viscosity index of 2.5, and silane coupling 0.8 part of agent, 8 parts of polytetrafluoroethylene, 19 parts of aluminum hydroxide, 7 parts of molybdenum disulfide and 17 parts of chopped glass fiber 3 mm, 0.6 part of phosphite antioxidant, put into high-permeable mixer and mix for 10 minutes to obtain Granules with raw materials.

[0027] B. Put the obtained raw materials for granulation into a twin-screw extruder for melt extrusion, and control the temperature of the first zone to the sixth zone of the twin-screw extruder: 235°C for the first zone, 240°C for the second zone, and 240°C for the third zone. The fourth zone is 245°C, the fifth zone is 240°C, and the sixth zone is 230°C to obtain high-strength and wear-resistant polyamide composite materials.

Embodiment 3

[0029] A. Prepare raw materials for granulation, weigh 55 parts of nylon 66 resin with a melting point above 210°C and a viscosity index of 2.3, 20 parts of nylon 1010 resin with a melting point above 220°C and a viscosity index of 2.5, and a silane coupling agent 1.2 parts, 12 parts of polytetrafluoroethylene, 20 parts of aluminum hydroxide, 10 parts of molybdenum disulfide and 20 parts of chopped glass fiber 3 mm, 0.9 part of phosphite antioxidant, put into a high-speed mixer and mix for 10 minutes to obtain raw material.

[0030] B. Put the obtained raw material for granulation into a twin-screw extruder for melt extrusion, and control the temperature of the first zone to the sixth zone of the twin-screw extruder to be 235°C in the first zone, 240°C in the second zone, and 245°C in the third zone. The fourth zone is 245°C, the fifth zone is 240°C, and the sixth zone is 230°C to obtain high-strength and wear-resistant polyamide composite materials.

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Abstract

The invention discloses a high strength wearable polyamide composite material which comprises the following components in parts by weight: 50-55 parts of nylon 66 resin, 15-20 parts of nylon 1010 resin, 0.5-1.2 parts of coupling agent, 18-20 parts of flame retardant, 5-10 parts of molybdenum disulfide, 0.3-0.9 part of antioxidant, 6-12 parts of polytetrafluoroethylene and 15-20 parts of short glass fibers. The method of preparing the composite material comprises the following steps: preparing raw materials: weighing 50-55 parts of nylon 66 resin, 15-20 parts of nylon 1010 resin, 0.5-1.2 parts of coupling agent, 18-20 parts of flame retardant, 5-10 parts of molybdenum disulfide, 0.3-0.9 part of antioxidant, 6-12 parts of polytetrafluoroethylene and 15-20 parts of short glass fibers, putting in a high speed mixer, and uniformly stirring at a high speed to obtain a pelleting raw material; fusing and extruding the raw material by a twin-screw extruder, and controlling the extruding temperatures of region 1 to region 6 of the twin-screw extruder to obtain the composite material. The material disclosed by the invention has the advantages of good strength, low hygroscopicity and low friction coefficient.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-strength wear-resistant polyamide composite material and a preparation method thereof. Background technique [0002] Polyamide (nylon, PA) is an important engineering plastic, which is widely used in the fields of automobiles, machinery, packaging, electronics and electrical appliances. Due to the high water absorption of nylon material, poor dimensional stability and insufficient dry friction coefficient, it is difficult to be used as a high-speed friction material. Contents of the invention [0003] The object of the present invention is to overcome the above disadvantages and provide a high-strength and wear-resistant polyamide composite material with good strength, low hygroscopicity and low friction coefficient, which is suitable for friction components and its preparation method. [0004] The purpose of the present invention is achieved through the follo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L27/18C08K13/04C08K7/14C08K3/30B29B9/06B29C47/92B29C48/92
CPCB29C47/827B29C47/92B29B9/06B29C48/92B29C2948/92704C08K2201/004C08L77/06C08L2205/025C08L2205/03C08L27/18C08K13/04C08K7/14C08K2003/3009B29C48/40B29C48/875
Inventor 蒋建华
Owner JIANGSU KANGFEITE POWER TECH
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