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Polyacetal resin composition and sliding member

A technology of polyacetal resin and composition, applied in the direction of bearing components, mechanical equipment, shafts and bearings, etc., capable of solving problems such as lack of compatibility, lack of wear resistance, and insufficient sliding properties

Inactive Publication Date: 2017-05-31
POLYPLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The addition of fluororesins and polyolefin-based resins improves the sliding properties to some extent, but the above-mentioned different resins lack compatibility with polyacetal resins, so the sliding properties under high surface pressure are insufficient, and compounding with inorganic fillers Material lacks wear resistance in sliding

Method used

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  • Polyacetal resin composition and sliding member
  • Polyacetal resin composition and sliding member

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0081] [Preparation of polyacetal resin composition]

[0082] The preparation of the polyacetal resin composition of the present invention can be easily prepared by a known method generally used as a conventional resin composition preparation method. For example, the following methods can be used: (1) mixing all the components constituting the composition, supplying it to an extruder and melt-kneading to obtain a granular composition; A method of supplying a part of the components constituting the composition from a feed port, supplying the remaining components from a side feed port, and performing melt kneading to obtain a granular composition; (3) temporarily preparing pellets with different compositions by extrusion, etc., and using the A method in which particles are mixed and adjusted to a predetermined composition.

[0083]

[0084] The sliding member of the present invention is formed of a resin molded body comprising the above polyacetal resin composition. Since th...

Embodiment

[0086] Hereinafter, although an Example demonstrates this invention concretely, this invention is not limited to these Examples.

[0087] [Table 1]

[0088]

[0089] (The unit is parts by mass.)

[0090] In Table 1, various materials are as follows.

[0091] (A) polyacetal resin

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PUM

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Abstract

Provided is a POM resin composition which is used for a resin moulded article having a superior sliding characteristic. This POM resin composition contains: (A) 100 parts by mass of a POM resin; (B) 0.01-1 parts by mass of a hindered phenolic antioxidant; (C) 0.05-1 parts by mass of a nitrogen-containing compound; (D) 0.5-10 parts by mass of a modified olefin polymer; (E) 0.01-5 parts by mass of an alkylene glycol polymer; (F) 0.1-20 parts by mass of calcium carbonate; (G) 0.1-10 parts by mass of a partial ester of a polyhydric alcohol; and (H) 0.1-10 parts by mass of an alpha-olefin oligomer.

Description

technical field [0001] The present invention relates to a polyacetal resin composition and a sliding member. Background technique [0002] Polyacetal resin (also known as polyoxymethylene resin, abbreviated as POM resin) has well-balanced mechanical properties, excellent friction / wear resistance, chemical resistance, heat resistance, electrical properties, etc., so it is widely used Used in automotive, electrical / electronic products and other fields. [0003] However, the properties required in these fields are gradually becoming more sophisticated, and as one example, further improvement of sliding properties together with general physical properties is desired. The sliding properties are the friction / wear properties of the material compounded with the inorganic filler. As an example, for racks such as CD-ROMs, the demand for cost reduction / lightweight is increasing, so it is used in acrylonitrile-butadiene-styrene copolymerization resin (ABS resin), polycarbonate (PC) / AB...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L59/00C08K3/26C08K5/103C08K5/13C08K5/16C08L23/02C08L23/26C08L71/02F16C33/20
CPCC08L71/02C08L59/04C08K2003/265F16C17/00F16C33/201F16C2208/66C08L23/26C08K5/103C08K3/26C08K5/13C08K5/16C08L23/02F16C33/20C08L59/00C08L2201/08C08L2203/20C08L2205/035
Inventor 霜田晓英
Owner POLYPLASTICS CO LTD