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Polyphenylene sulfide composite fiber and nonwoven fabric

A polyphenylene sulfide and composite fiber technology, applied in the direction of conjugated synthetic polymer artificial filament, textile, non-woven fabrics, etc., can solve the problem of durability, poor flame retardancy and chemical resistance, and no PPS Resin heat resistance and chemical resistance heat-adhesive non-woven fabrics, etc., to achieve the effect of excellent thermal adhesiveness and excellent mechanical strength

Inactive Publication Date: 2013-09-25
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the melting point of the sheath component is higher than that of the core component, there is no change in thermal adhesiveness compared to single-component fibers. Aspects are poor, so there is a big problem in durability
[0005] As mentioned above, fibers with excellent thermal adhesiveness and non-woven fabrics with high mechanical strength that utilize the heat resistance and chemical resistance of PPS resin have not yet been obtained.

Method used

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  • Polyphenylene sulfide composite fiber and nonwoven fabric
  • Polyphenylene sulfide composite fiber and nonwoven fabric
  • Polyphenylene sulfide composite fiber and nonwoven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] (ingredient B)

[0114] 100 moles of sodium sulfide nonahydrate, 45 moles of sodium acetate, and 25 liters of N-methylpyrrolidone (NMP) were put into the autoclave, and the temperature was slowly raised to 220° C. while stirring, and the contained moisture was removed by distillation. Add 91 mol (89.8 mol%) of p-dichlorobenzene as the main component monomer and 10 mol (10 mol%) of m-dichlorobenzene as the auxiliary component monomer together with 5 liters of NMP into the dehydrated system. Benzene, and 0.2 mole (0.2 mole %) of 1,2,4-trichlorobenzene, nitrogen at 3kg / cm 2 After sealing under pressure, the temperature was raised, and polymerization was carried out at a temperature of 260° C. for 4 hours. After the polymerization was completed, it was cooled, and the polymer was precipitated in distilled water, and passed through a metal mesh with 150 meshes to collect small lumps of polymer. The small block polymer obtained above was washed 5 times with distilled water ...

Embodiment 2

[0122] (ingredient B)

[0123] As component B, the same copolymerized PPS resin as that used in Example 1 was used.

[0124] (ingredient A)

[0125] As component A, the same PPS resin as that used in Example 1 was used.

[0126] (spinning and nonwoven fiber reticulation)

[0127] Except that the temperature of the compressed air was set to normal temperature (20° C.) and the injector pressure was set to 0.25 MPa, core-sheath composite spinning and nonwoven fiber web formation were performed in the same manner as in Example 1. The average single fiber fineness of the obtained core-sheath type composite filament was 2.3 dtex, the spinning speed was 5,250 m / min, and the spinnability was good with 0 broken filaments during spinning for 1 hour.

[0128] (Temporary Bonding · Thermal Bonding)

[0129] Next, the nonwoven web was temporarily bonded and thermally bonded in the same manner as in Example 1 to obtain a core-sheath composite long-fiber nonwoven fabric. The weight per u...

Embodiment 3

[0131] (ingredient B)

[0132] The amount of monomer added is 94.8 mol (94.8 mol%) for p-dichlorobenzene, 5 mol (5 mol%) for m-dichlorobenzene, and 0.2 mol (0.2 mol%) for 1,2,4-trichlorobenzene , except that, polymerization was carried out under the conditions of Example 1 to manufacture a copolymerized PPS resin, and a copolymerized PPS resin having an MFR of 142 g / 10 minutes and a melting point of 263° C. was obtained. The above copolymerized PPS resin was dried and used as component B in the same manner as in Example 1.

[0133] (ingredient A)

[0134] As component A, the same PPS resin as that used in Example 1 was used.

[0135] (spinning and nonwoven fiber reticulation)

[0136] Using the above-mentioned components A and B, under the same conditions as in Example 1, core-sheath composite spinning and nonwoven fiber web formation were performed. The average single fiber fineness of the obtained core-sheath type composite filament was 2.5 dtex, the spinning speed was 4...

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Abstract

Provided is a polyphenylene sulfide composite fiber which consists mainly of a component (A) and a component (B), the component (A) being a resin mainly comprising poylphenylene sulfide that comprises p-phenylene sulfide as the main units and the component (B) being a resin mainly comprising a copolyphenylene sulfide that contains at least one kind of comonomer units besides p-phenylene sulfide, characterized in that at least some of the surface of the fiber is constituted of the component (B). The composite fiber, which is constituted of resins that comprise polyphenylene sulfide as a main component, is heat-bondable and is excellent in terms of heat resistance, flame retardancy, and chemical resistance. Also provided is nonwoven fabric.

Description

technical field [0001] The present invention relates to a fiber having excellent heat resistance and chemical resistance and a nonwoven fabric composed of a resin mainly composed of polyphenylene sulfide (hereinafter sometimes abbreviated as "PPS"). Background technique [0002] PPS resin has excellent heat resistance, flame retardancy, and chemical resistance, and is suitable for engineering plastics, films, fibers, and non-woven fabrics. In particular, nonwoven fabrics are expected to be used in industrial applications such as heat-resistant filters, electrical insulating materials, and battery separators by making use of the above-mentioned characteristics. [0003] Various proposals have been made so far regarding nonwoven fabrics using PPS resins. For example, there is disclosed a long-fiber nonwoven fabric obtained by spinning PPS resin by a spunbonding method to obtain a fabric, and stretching at a temperature above the glass transition temperature, preferably after ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/16D04H3/009D04H3/147
CPCD04H3/009D04H3/147D01F8/16D04H3/14D04H3/16Y10T428/2929Y10T442/641D04H1/43828D04H1/43832D04H1/4383D04H1/541D01F8/04
Inventor 中野洋平矢挂善和伊藤正士
Owner TORAY IND INC
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