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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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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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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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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