Polyacetal fibers, method for producing same and material for drawing

A technology of polyacetal and polyacetal resin, applied in the field of drawing materials, can solve problems such as complicated operation, and achieve the effect of uniform appearance and excellent spinning stability

Active Publication Date: 2021-10-26
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the fiber disclosed in Patent Document 1, when the polyoxymethylene copolymer is melt spun to produce polyoxymethylene fiber, it is necessary to discharge the fiber discharged from the discharge nozzle of the melt spinning device while spinning. The solids are extracted while being heated at 140-250°C, and the operation is complicated

Method used

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  • Polyacetal fibers, method for producing same and material for drawing
  • Polyacetal fibers, method for producing same and material for drawing
  • Polyacetal fibers, method for producing same and material for drawing

Examples

Experimental program
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Effect test

Embodiment 1

[0153] (1) Preparation of polyacetal

[0154] A polyacetal resin composition (hereinafter, may be referred to as polyacetal (B)) as a raw material of polyacetal fibers is prepared by the following method.

[0155] First, 100 parts by mass of trioxane and 4.0 parts by mass of 1,3-dioxane as a comonomer were mixed, and 0.045 millimoles of boron trifluoride diethyl etherate per 1 mole of trioxane was supplied to the catalyst, Polymerization was carried out in a twin-screw kneader with intermeshing paddles. At this time, 0.12 parts by mass of methylal was added as a viscosity modifier to 100 parts by mass of trioxane to adjust the viscosity. After completion of the polymerization, a small amount of triphenylphosphine benzene solution was added to deactivate the catalyst and pulverized to obtain crude polyacetal.

[0156] After adding and blending additives (Irganox (registered trademark) 245 (manufactured by BASF Japan Co., Ltd.) and melamine (manufactured by Mitsui Chemicals Co...

Embodiment 2

[0165] Except having changed the compounding quantity of the talc into 0.15 mass parts per 100 mass parts of polyacetal (A), it carried out similarly to Example 1, and obtained the polyacetal fiber. Various properties of the obtained polyacetal fibers were measured, and the results are shown in Table 1.

Embodiment 3

[0167] Except having changed the compounding quantity of a talc into 0.25 mass parts per 100 mass parts of polyacetal (A), it carried out similarly to Example 1, and obtained the polyacetal fiber. Various properties of the obtained polyacetal fibers were measured, and the results are shown in Table 1.

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Abstract

Polyacetal fibers having excellent spinning stability and uniform appearance, and a method for producing such polyacetal fibers have been anticipated. The present invention provides polyacetal fibers which are characterized by containing from 0.05 to 1.3 parts by mass of an inorganic filler relative to 100 parts by mass of a polyacetal resin, and are also characterized in that the inorganic filler has an average primary particle diameter of more than 0.5 [mu]m but not more than 10 [mu]m, while having a melt flow index of from 15 to 45 g / 10 min.

Description

technical field [0001] The present invention relates to a polyacetal fiber containing a polyacetal resin and an inorganic filler, a method for producing the same, and a stretching material containing a polyacetal resin and an inorganic filler. Background technique [0002] Polyacetal is also called an oxymethylene polymer, and includes a homopolymer polymerized with formaldehyde and a copolymer obtained by polymerizing a cyclic oligomer such as trioxane and a comonomer. [0003] Polyacetal is excellent in balance of mechanical properties, chemical resistance, sliding properties, etc., and its processing is easy. Therefore, as a representative engineering plastic, it is widely used mainly in electrical and electronic parts, automobile parts, and other various machine parts. However, polyacetal is difficult to apply to fibers and stretched materials due to physical properties such as high crystallinity. In addition, polyacetal fibers also have a problem that unevenness in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/94D01F1/10D01D5/08
CPCD01F6/94D01F1/10D01D5/08D01F6/66C08K3/346C08K2201/005C08L59/00D01F6/50D10B2331/06
Inventor 须长大辅三上素直
Owner MITSUBISHI GAS CHEM CO INC
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