Polyphenylene sulfide composite fiber and non-woven fabric

A composite fiber and polyphenylene sulfide technology, applied in the direction of conjugated synthetic polymer artificial filament, textile, non-woven fabric, etc., can solve the problems of high mechanical strength, insufficient thermal adhesion, high fiber crystallinity, etc., to achieve Excellent thermal adhesion and excellent mechanical strength

Active Publication Date: 2015-05-20
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the method of performing heat treatment, there is a problem that the thermal adhesiveness is insufficient because the crystallinity of the fiber is excessively advanced, and a nonwoven fabric with high mechanical strength cannot be obtained.
However, there is a problem that the fibers obtained by high-speed spinning at a spinning speed of 6000 m / min or more have high crystallinity and insufficient thermal adhesiveness, and it is impossible to obtain a nonwoven fabric with high mechanical strength.
[0007] In the above-mentioned technology, although a certain effect of improving thermal adhesiveness while having thermal dimensional stability can be confirmed, if the basis weight becomes high, sufficient thermal adhesiveness cannot be obtained
[0008] As mentioned above, PPS fibers with thermal dimensional stability and excellent thermal adhesiveness, and PPS nonwoven fabrics with high mechanical strength have not yet been obtained.

Method used

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  • Polyphenylene sulfide composite fiber and non-woven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] (ingredient A)

[0089] 100 mol% linear polyphenylene sulfide resin (manufactured by Toray Corporation, product number: E2280, MFR: 160 g / 10 minutes) was dried at a temperature of 160° C. for 10 hours in a nitrogen atmosphere, and used as component A.

[0090] (ingredient B)

[0091] 100 mol % linear polyphenylene sulfide resin (manufactured by Toray Corporation, product number: M2588, MFR: 300 g / 10 minutes) was dried at 160° C. for 10 hours in a nitrogen atmosphere, and used as component B.

[0092] (spinning and non-woven reticulation)

[0093] The above-mentioned component A was melted with the extruder for the core component, and the above-mentioned component B was melted with the extruder for the sheath component, and the mass ratio of component A and component B was measured in such a way that the mass ratio of component A and component B was 80:20. The filament temperature is 315°C, and the single-hole discharge rate is 1.37g / min from the hole diameter The co...

Embodiment 2

[0097] (ingredient A)

[0098] As component A, the same PPS resin as that used in Example 1 was used.

[0099] (ingredient B)

[0100] As component B, the same PPS resin as that used in Example 1 was used.

[0101] (spinning and non-woven reticulation)

[0102] Core-sheath composite spinning and nonwoven meshing were performed in the same manner as in Example 1 except that the injector pressure was 0.15 MPa. The average single fiber fineness of the obtained core-sheath type composite long fiber was 3.2 dtex, the spinning speed was 4,317 m / min, the crystallinity of the fiber surface was lower than that of the center of the fiber cross section, and there were 0 broken filaments during spinning for 1 hour. Good silkiness.

[0103] (Temporary Bonding · Thermal Bonding)

[0104] Next, the above-mentioned 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 unit ...

Embodiment 3

[0106] (ingredient A)

[0107] As component A, the same PPS resin as that used in Example 1 was used.

[0108] (ingredient B)

[0109] As component B, the same PPS resin as that used in Example 1 was used.

[0110] (spinning and non-woven reticulation)

[0111] In the same manner as in Example 1, core-sheath composite spinning and nonwoven reticulation were performed. The average single fiber fineness of the obtained core-sheath type composite long fiber was 2.9 dtex, the spinning speed was 4,797 m / min, the crystallinity of the fiber surface was lower than that of the center of the fiber cross section, and the number of broken filaments was 0 during spinning for 1 hour. Spinnability is good.

[0112] (Temporary Bonding · Thermal Bonding)

[0113] Next, except that the thermal bonding temperature was 140° C., temporary bonding and thermal bonding were performed on the above-mentioned nonwoven web in the same manner as in Example 1 to obtain a core-sheath type composite lon...

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PUM

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Abstract

Provided are: a composite fiber which comprises a resin containing polyphenylene sulfide as the main component and has excellent thermal adhesion properties while keeping thermal dimensional stability thereof; and a non-woven fabric. A composite fiber mainly composed of a component (A) and a component (B), wherein the component (A) is a resin containing polyphenylene sulfide as the main component and the component (B) is a resin containing polyphenylene sulfide as the main component and having a higher melt flow rate than that of the component (A), and wherein at least a part of the surface of the fiber is formed from the component (B).

Description

technical field [0001] The present invention relates to a PPS composite fiber composed of a resin mainly composed of polyphenylene sulfide (hereinafter, sometimes abbreviated as "PPS") and excellent in heat resistance and chemical resistance, and a nonwoven fabric composed of the fiber. 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] So far, as a nonwoven fabric using a PPS resin, a long-fiber nonwoven fabric obtained by spinning and stretching a PPS resin by a spunbonding method, and performing stretching on the obtained fabric at a temperature below its first crystallization temperature has been prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/16D04H3/009D04H3/147
CPCD04H1/4291D04H3/14D04H3/16D04H3/009D04H3/147Y10T428/2929Y10T442/641D01F8/16D04H1/43828D04H1/43832D04H1/4383
Inventor 中野洋平矢挂善和羽根亮一
Owner TORAY IND INC
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