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Polyacetal resin composition

A technology of polyacetal resin and composition, which is applied in the field of polyacetal resin composition, and can solve problems such as difficulty in satisfying high sliding properties

Active Publication Date: 2012-07-18
POLYPLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even with these compositions, it is difficult to satisfy the high sliding characteristics required in recent years and balance other various characteristics (mechanical properties, etc.)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0053] The preparation method of the graft copolymer is not particularly limited, and it can be easily prepared by a known radical reaction. For example, the graft copolymer (D) can be prepared by adding a radical catalyst to the monomers constituting (d1) and the monomers constituting (d2), followed by kneading and grafting; or in (d1 ) component or (d2) component, by adding a radical catalyst such as a peroxide to generate radicals, and melt-kneading it with the polymer of the other component to graft it, etc.

[0054] The ratio of (d1) olefin-based polymer to (d2) vinyl-based polymer constituting the (D) graft copolymer is preferably d1:d2=80:20 to 20:80 (weight ratio), particularly preferably d1: d2=60:40~40:60.

[0055] In this invention, the compounding quantity of (D) graft copolymer is 2-15 weight part with respect to 100 weight part of (A) polyacetal resins. (D) When the compounding quantity of a component is less than 2 weight part, the improvement effect of the sl...

Embodiment

[0078] The following examples illustrate the present invention in detail, but the present invention is not limited by these examples.

[0079] Examples and Comparative Examples

[0080] Details of each component used in Examples and Comparative Examples are as follows.

[0081] (A) Polyacetal resin: made by Polyplastics Co., Ltd., DURACON (registered trademark) M90

[0082] (B) Hindered phenol antioxidant: manufactured by BASF, IRGANOX (registered trademark) 1010

[0083] (C) Nitrogen-containing compound: melamine

[0084] (D-1) Graft copolymer: PE-g-AS (manufactured by NOF CORPORATION, Modiper (registered trademark) A1401)

[0085] (D-2) Graft copolymer: PE-g-PMMA (manufactured by NOF CORPORATION, Modiper (registered trademark) A1200)

[0086] (E) Fatty acid ester: glycerol monobehenate (manufactured by Riken Vitamin Co., Ltd., Rikemal (registered trademark) B-100)

[0087] (F-1) Spindle-shaped calcium carbonate (aminosilane surface-treated product): manufactured by Sh...

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Abstract

The present invention provides a polyacetal resin composition which has excellent friction and wearing characteristics under general sliding conditions comprising a strict sliding condition and then has an excellent mechanical property. To 100 parts by weight of (A) a polyacetal resin, there are added 0.01-1 parts by weight of (B) hindered phenol antioxidants, 0.05-1 parts by weight of (C) nitrogenous compounds, 2-15 parts by weight of (D) grafted copolymer, 0.5-8 parts by weight of (E) aliphatic ester, 2-20 parts by weight of (F) fusiform calcium carbonate, and 2 to 40 parts by weight of (G) an inorganic filler to form the polyacetal resin composition.

Description

technical field [0001] The present invention relates to polyacetal resin compositions. Background technique [0002] Polyacetal resin has well-balanced mechanical properties, and is excellent in friction and wear characteristics, chemical resistance, heat resistance, electrical characteristics, and the like. Therefore, polyacetal resins are widely used in the fields of automobiles, electric and electronic components, and the like. However, with the advancement of the utilization form and processing technology of polyacetal resins in these fields, the properties required for polyacetal resins tend to become higher and more specialized. For example, polyacetal resins with further improved sliding properties under severe sliding conditions such as high surface pressure and high load are sought. [0003] As a method for improving the sliding properties of polyacetal resins, a method of adding fluororesins and polyolefin resins to polyacetal resins is generally known, and addin...

Claims

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Application Information

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IPC IPC(8): C08L59/00C08L51/06C08L77/00C08K13/02C08K5/13C08K5/3492C08K5/31C08K5/25C08K5/101C08K5/103C08K3/26C08K3/24C08K3/34C08K3/36C08K13/06C08K9/06
Inventor 霜田晓英
Owner POLYPLASTICS CO LTD
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