UHMWPE/PA66 (Ultra High Molecular Weight Polyethylene/Polyamide 66) injection molding wear-resistant alloy and preparation method as well as application thereof

A wear-resistant alloy, PA66 technology, applied in the field of polymer alloy materials, can solve the problems of poor wear resistance, small friction coefficient, large friction coefficient, etc., to achieve good self-lubrication, excellent poor wear resistance and low wear Effect

Inactive Publication Date: 2014-08-06
柳州华工百川新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of large friction coefficient, poor wear resistance and low molding efficiency of the existing friction-resistant high polymer materials, the primary purpose of the present invention is to provide a new friction-resistant material, that is, a UHMWPE / PA66 injection molding Wear-resistant alloy, the wear-resistant alloy for UHMWPE / PA66 injection molding has good self-lubrication, small friction coefficient, wear resistance, moderate cost, can be used for injection molding, and has high molding efficiency, suitable for making various friction-resistant products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A wear-resistant alloy for UHMWPE / PA66 injection molding, prepared by the following method:

[0043] 90 parts of PA66 (melting point 254°C, Vicat softening temperature 240°C, Taber abrasion 5), 6 parts of UHMWPE (density 0.91g / cm 3 , molecular weight 9 million), 1.5 parts of maleic anhydride grafted PE compatibilizer, 1 part of silicone oil (viscosity 500mm 2 / s, surface tension 22dyn / cm), 1 part of silica gel powder (average pore size 50A, specific surface area 550m 2 / g, particle size 100 mesh) and 0.5 parts of antioxidant 168 were put into a high-speed mixer, mixed for 3 minutes, extruded and granulated in a twin-screw extruder with a melting temperature of 230~270°C to obtain UHMWPE / PA66 for injection molding wear-resistant alloy.

Embodiment 2

[0045] A wear-resistant alloy for UHMWPE / PA66 injection molding, prepared by the following method:

[0046] 80 parts of PA66 (melting point 258°C, Vicat softening temperature 230°C, Taber abrasion 6), 15 parts of UHMWPE (density 0.93g / cm 3 , molecular weight 7 million), 2 parts of maleic anhydride grafted PE compatibilizer, 1.5 parts of silicone oil (viscosity 800mm 2 / s, surface tension 21dyn / cm), 1 part of silica gel powder (average pore size 60A, specific surface area 450m 2 / g, particle size 200 mesh) and 0.5 parts of antioxidant 1010 were put into a high-speed mixer, mixed for 3 minutes, extruded and granulated in a twin-screw extruder with a melting temperature of 230~270°C to obtain UHMWPE / PA66 for injection molding wear-resistant alloy.

Embodiment 3

[0048] A wear-resistant alloy for UHMWPE / PA66 injection molding, prepared by the following method:

[0049] 70 parts of PA66 (melting point 265°C, Vicat softening temperature 210°C, Taber abrasion 8), 25 parts of UHMWPE (density 0.94g / cm 3 , molecular weight 5 million), 2 parts of maleic anhydride grafted PE compatibilizer, 1.5 parts of silicone oil (viscosity 1000mm 2 / s, surface tension 20dyn / cm), 1 part of silica gel powder (average pore size 80A, specific surface area 350m 2 / g, particle size 250 mesh) and 0.5 parts of antioxidant 168 were put into a high-speed mixer, mixed for 3 minutes, extruded and granulated in a twin-screw extruder with a melting temperature of 230~270°C to obtain UHMWPE / PA66 for injection molding wear-resistant alloy.

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Abstract

The invention discloses a UHMWPE / PA66 (Ultra High Molecular Weight Polyethylene / Polyamide 66) injection molding wear-resistant alloy and a preparation method as well as application thereof. The UHMWPE / PA66 injection molding wear-resistant alloy is prepared from the following components in parts by weight: 50-90 parts of PA66, 6-40 parts of UHMWPE, 1.5-5 parts of compatibilizer, 1-3.5 parts of silicone oil and 1 part of silica gel powder, wherein the density of the UHMWPE is 0.91-0.96 g / cm<3>, and the molecular weight of the UHMWPE is 200-900 ten thousands. The UHMWPE has the characteristics of good self-lubrication, small wear, superior wear resistance performance, prominent impact resistance performance but poor other mechanical properties; the PA66 is a high-toughness material and has the superior performance such as creep resistance and plastic deformation resistance, but has high wear and friction coefficient value; and the UHMWPE / PA66 injection molding wear-resistant alloy has the advantages of capabilities of improving the respective defects of the two materials and integrating the performance advantages of the alloy and wider application range. The UHMWPE / PA66 injection molding wear-resistant alloy can also be applied to an injection molding material, and the requirement of a product with a complex structure on injection molding can be met.

Description

technical field [0001] The invention belongs to the field of polymer alloy materials, and specifically relates to a wear-resistant alloy for UHMWPE / PA66 injection molding and its preparation method and application. products. Background technique [0002] Traditional polymer anti-friction materials are usually composed of polytetrafluoroethylene (PTFE), ultra-high molecular weight polyethylene (UHMWPE), polyamide or its modified materials, etc. The wear resistance of these three materials is related at home and abroad. Research. For the first two materials, because of the special properties of the material itself, it is difficult to process them, so the molding method has certain limitations; the friction resistance of polyamide is not as good as the first two materials, and it is mostly used in wear resistance. In less demanding products. [0003] Ultra-high molecular weight polyethylene has excellent impact resistance, wear resistance, self-lubrication, chemical corrosio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L23/06C08L83/04C08L51/06C08K7/26
Inventor 吴付刚郭修芹植志文杨玲慧杨光林李及珠
Owner 柳州华工百川新材料科技有限公司
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