Polyoxymethylene resin composition and moldings thereof

A kind of polyoxymethylene resin and composition technology, applied in the field of polyoxymethylene resin composition

Inactive Publication Date: 2006-11-22
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this document, polyoxymethylene resins are only listed as resins that can form compositions, and there are no specific examples including examples.

Method used

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  • Polyoxymethylene resin composition and moldings thereof
  • Polyoxymethylene resin composition and moldings thereof
  • Polyoxymethylene resin composition and moldings thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0201] Adding 45 parts by weight of the polyoxymethylene resin of the component (a-1) and 55 parts by weight of the polymer of the component (b-1) having at least one aromatic vinyl compound-conjugated diene compound random copolymer block, And the stabilizer triethylene glycol-bis-[3-(3-tert-butyl-5-methyl-4-hydroxyl) of 0.3% by weight relative to the total amount of (a-1) component and (b-1) component Phenyl)propionate], 0.05% by weight of polyamide 66, 0.10% by weight of calcium stearate, uniformly mixed with a kneader, and then set at 200°C with a temperature of 25mmφ twin-screw extruder with L / D=42 Exit machine, under the condition of screw revolution 200rpm, 10kg / hr, carry out melt kneading. The extruded resin was cut into pellets with a strand cutter. Various measurements were carried out using the pellets. The results are shown in Table 1.

Embodiment 2

[0203] Except changing the (b-1) component of Example 1 into 40 parts by weight, and adding 15 parts by weight of (c-1) olefin resin, it carried out exactly the same as Example 1. The results are shown in Table 1.

Embodiment 3

[0211] Except that 5 parts by weight (d-1) of siloxane-grafted polyolefin resin was added in Example 1, the procedure was carried out exactly the same as Example 1. The results are shown in Table 2.

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Abstract

A polyoxymethylene resin composition which comprises (A) a polyoxymethylene resin, (B) a polymer having at least one block made of a hydrogenated aromatic vinyl-conjugated diene random copolymer having the main dispersion peak of tan delta at 60 DEG C or below in the viscoelastic spectrum, and, if necessary, (C) a polyolefin resin with the provisos that the amount of (A) is 10 to 99.5 parts by weight and the total amount of (B) and (C) is 0.5 to 90 parts by weight, each per 100 parts by weight of the sum of (A), (B) and (C) and that the (B) / (C) weight ratio is 100 / 0 to 20 / 80.

Description

technical field [0001] The present invention relates to a polyoxymethylene resin composition, which has excellent flexibility, shock absorption, noise reduction, friction and wear resistance under high load conditions, and oil resistance. The resin composition of the present invention is suitable for use in various articles such as precision instruments, home appliances, office automation machines, automobiles, industrial materials, and daily sundries. Background technique [0002] Polyoxymethylene resin is an engineering resin with well-balanced mechanical properties and excellent friction and wear resistance, and is widely used in various mechanical components, such as office automation machines and other fields. However, polyoxymethylene resin still needs to be improved in terms of flexibility and impact resistance. Combinations of Delrin and rubber were therefore tried. Specific examples include techniques of mixing polyurethane resins with polyoxymethylene resins (for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L59/00C08L23/00C08L23/08C08L51/06C08L53/00C08L53/02
CPCC08L23/00C08L23/0815C08L51/06C08L53/00C08L53/02C08L53/025C08L59/00C08L2205/035C08L2666/02C08L2666/04C08L2666/24C08L2666/22C08L2666/06
Inventor 堀尾光宏吉永勇二
Owner ASAHI KASEI KK
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