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High-toughness, wear-resistant, self-lubricating polyamide material and preparation thereof

A self-lubricating and wear-resistant technology, which is applied in the fields of hexamethylene adipate lubrication and wear-resistant modified engineering plastics and its preparation, can solve the problem of low strength of hexamethylene adipate resin, insufficient luster of the product surface, The low temperature toughness of the product is not good, etc., to achieve the effect of good surface gloss, improved self-lubricating property, and good dimensional stability

Inactive Publication Date: 2008-11-12
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has some disadvantages such as low strength of unreinforced modified hexamethylene adipate resin, strong water absorption, low heat resistance, poor toughness, etc., so it is modified on the basis of hexamethylene adipate resin , to meet the needs of more industries.
[0003] Hexamethylenediamine adipate resin also has many adverse phenomena during the product molding process, such as the surface of the product is not glossy enough, the product toughness is not up to the mark, it is prone to fracture, the product has poor toughness at low temperature, and the product suffers from long-term friction and back and forth. It is easy to peel, wear, and whiten the surface during exercise.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The weight ratio of resin hexamethylenediamine adipate is: 78.1%; the weight ratio of anti-wear agent is: 15%; the weight ratio of sliding agent is: 0.2%; is: 0.2%; the weight ratio of the toughening agent is: 5%; the above percentages are percentages by weight. Mix for 4 minutes in a high-speed mixer;

[0017] The uniformly mixed components are placed in a twin-screw extruder, melted, mixed, extruded and granulated;

[0018] The processing temperature is zone 1 temperature: 240-250℃, zone 2 temperature: 245-260℃, zone 3 temperature: 245-260℃, zone 4 temperature: 250-270℃, zone 5 temperature: 250-280℃, zone 6 Zone temperature: 250-275°C, zone seven temperature: 250-260°C, host speed: 300-350rpm.

Embodiment 2

[0020] The resin hexamethylenediamine adipate resin weight ratio is: 66%; wear-resistant agent weight ratio is: 20%; slip agent weight ratio is: 0.5%; coupling agent weight ratio is: 3%; is: 0.5%; the weight ratio of the toughening agent is: 10%; the above percentages are percentages by weight. Mix for 4 minutes in a high-speed mixer;

[0021] The uniformly mixed components are placed in a twin-screw extruder, melted, mixed, extruded and granulated;

[0022] The processing temperature is zone 1 temperature: 240-250℃, zone 2 temperature: 245-260℃, zone 3 temperature: 245-260℃, zone 4 temperature: 250-270℃, zone 5 temperature: 250-280℃, zone 6 Zone temperature: 250-275°C, zone seven temperature: 250-260°C, host speed: 300-350rpm.

Embodiment 3

[0024] The weight ratio of resin hexamethylenediamine adipate is: 71.4%; the weight ratio of anti-wear agent is: 18%; the weight ratio of sliding agent is: 0.3%; is: 0.3%; the weight ratio of the toughening agent is: 8%; the above percentages are percentages by weight. Mix for 4 minutes in a high-speed mixer;

[0025] The uniformly mixed components are placed in a twin-screw extruder, melted, mixed, extruded and granulated;

[0026] The processing temperature is zone 1 temperature: 240-250℃, zone 2 temperature: 245-260℃, zone 3 temperature: 245-260℃, zone 4 temperature: 250-270℃, zone 5 temperature: 250-280℃, zone 6 Zone temperature: 250-275°C, zone seven temperature: 250-260°C, host speed: 300-350rpm.

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PUM

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Abstract

The invention discloses a polyamide material with high tenacity, wear-resisting capacity and self-lubricating property and a method for preparing the same. The compositions by weight percentage of the polyamide material are: 65 to 80 percent of polyhexamethylene adipamide, 15 to 23 percent of wear-resistant agent, 0 to 0.5 percent of lubricating agent, 0 to 3 percent of coupling agent, 0 to 0.5 percent of antioxidant, and 5 to 10 percent of toughener. The method improves wear-resisting property and self-lubricating property of the product mainly through auxiliary materials, thereby enlarging the application range of polyamide modified engineering plastics. The product of the invention has the advantages of good toughness, high impact strength, good surface glossiness, excellent chemical resistance and good dimension stability; a part of wear-resisting agent is added in the polyamide material, so the wear-resisting property of the material can be greatly improved; because the application range of the polyamide material is enlarged, wear-resisting requirements of partial transmission parts, shuttle wear parts and anti-sand-scraping parts can be met; and the polyamide material can be widely used for transmission components of an engine, an outer housing of a roller, an outer housing of an engine, a mechanical socket connector and transmission accessories, and can be used in positions which are often contacted and abraded in other transmission devices.

Description

technical field [0001] The invention relates to the technical field of polymer plastics, in particular to hexamethylenediamine adipate lubricating and wear-resistant modified engineering plastics and a preparation method thereof. Background technique [0002] Hexamethylenediamine adipate resin is a general-purpose plastic that is widely used. It has good rigidity, high impact strength, low temperature resistance, chemical resistance, mechanical strength and electrical properties, heat resistance, and high surface hardness. , and the characteristics of good dimensional stability, processing dimensional stability and surface gloss are good, and it is used for some heat-resistant and product parts with good surface gloss. At the same time, it is easy to make engineering plastics with special properties such as glass fiber reinforced and glass fiber reinforced flame retardant. Such products are widely used in electronic appliances, IT, home appliances, automobiles, toys, mechan...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L51/06C08K13/02C08K3/30C08L27/18C08K5/00B29B9/12B29C47/92B29C48/40B29C48/92
CPCB29C47/92B29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/9185B29C2948/92895
Inventor 徐东贺永王贤文
Owner SHENZHEN KEJU NEW MATERIAL
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