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Curled two-component fiber composition, preparation method thereof and filtering material

A two-component fiber and filter material technology, applied in filtration and separation, membrane filter, fiber treatment and other directions, can solve the problems of large filtration resistance, affect the filtration efficiency of the filter material, less curling, etc., and achieve high filtration efficiency. , the effect of high softness and high air permeability

Active Publication Date: 2017-09-22
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The PPS fibers currently developed are mainly ordinary round short fibers. PPS fibers with conventional circular cross-sections generally have little crimping, and there are many fibers in the material, which will affect the filtration efficiency of the filter material, and High filter resistance

Method used

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  • Curled two-component fiber composition, preparation method thereof and filtering material
  • Curled two-component fiber composition, preparation method thereof and filtering material
  • Curled two-component fiber composition, preparation method thereof and filtering material

Examples

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preparation example Construction

[0026] The present invention also provides a method for preparing crimped bi-component fibers, the method comprising the following steps: melting and extruding the first component through the first extruder at 300-310°C and entering into the metering pump; The components are melted and extruded through the second extruder at 300-310°C and enter the metering pump. The mass ratio of the first component and the second component entering the spinneret is controlled by the metering pump to be 1:1-4:1 , the first component and the second component are spun in the side-by-side composite assembly or the eccentric composite assembly of the spinneret to form a melt filament, the spinning temperature is 310-320°C, and the melt filament is cooled by a cooling air device , and then draw and stretch to obtain crimped bicomponent fibers at a stretching speed of 2000-6000m / min.

[0027] The present invention also provides a filter material prepared from the crimped bicomponent fiber of the pr...

Embodiment 1

[0029]The crimped bicomponent fiber is prepared from the first component 1 and the second component 2, the first component 1 is polyphenylene sulfide, the second component 2 is polyphenylene sulfide and ethoxylated long-chain alkane ether Composition, in the second component 2, the mass fraction of ethoxy long-chain alkane ether in the second component 2 is 0.5%, and the mass fraction of polyphenylene sulfide in the second component 2 is 95.5%.

[0030] The first component 1 is added to the first extruder 3 from the first barrel 8, and the first component 1 is melted and extruded through the first extruder 3 at 300° C. and enters the metering pump 5; Part 2 is fed into the second extruder 4 from the second barrel 9, and the second component is melted and extruded through the second extruder 4 at 300°C and enters the metering pump 5; it is controlled by the metering pump 5 and enters the spinneret The mass ratio of the first component 1 and the second component 2 of 6 is 1:1, a...

Embodiment 2

[0033] The crimped bicomponent fiber is prepared from the first component 1 and the second component 2. The first component 1 is polyphenylene sulfide, and the second component 2 is composed of polyphenylene sulfide and dibutyltetracresol , in the second component 2, the mass fraction of dibutyltetracresol in the second component 2 is 1%, and the mass fraction of polyphenylene sulfide in the second component 2 is 99%.

[0034] The first component 1 is added to the first extruder 3 from the first barrel 8, and the first component 1 is melted and extruded through the first extruder 3 at 300° C. and enters the metering pump 5; Part 2 is fed into the second extruder 4 from the second barrel 9, and the second component is melted and extruded through the second extruder 4 at 300°C and enters the metering pump 5; it is controlled by the metering pump 5 and enters the spinneret The mass ratio of the first component 1 and the second component 2 of 6 is 2:1, and the first component 1 an...

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Abstract

The invention discloses a curled two-component fiber composition, a preparation method thereof and a filtering material. The curled two-component fiber is prepared from a first component and a second component. The first component is polyphenylene sulfide, and the second component is polyphenylene sulfide and an additive. The additive changes the cure shrinkage rate of the polyphenylene sulfide in the second component so that the cure shrinkage rates of the first component and the second component are different. When the first component and the second component are used to prepare the two-component fiber, due to the different shrinkage rages of the first component and the second component, the two-component fiber can carry out asymmetric shrinkage to generate a helical curled structure. Because of the helical curled structure, the curled two-component fiber has high fluffiness and elasticity and good air permeability. The provided filtering material has high softness, fluffiness, elasticity, and filtering efficiency and good air permeability.

Description

technical field [0001] The invention relates to the technical field of fiber preparation, in particular to a crimped bicomponent fiber composition, a preparation method thereof and a filter material. Background technique [0002] Polyphenylene sulfide (hereinafter referred to as PPS) resin has excellent heat resistance, shielding properties, chemical resistance, electrical insulation, moisture resistance and other properties suitable for engineering plastics, and can be used for injection molding and extrusion molding. Various electrical, electronic parts, mechanical parts and automotive parts, films, fibers, etc. centered on it. For example, PPS materials are widely used in filter materials used in various industrial films such as bag filters for exhaust gas dust collection. This filter material is obtained by needle-punching PPS short fibers onto a base cloth made of PPS or PTFE yarn, and is used to trap dust in the exhaust gas and discharge the dust-free exhaust gas to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/16D01F1/10D01D5/32D01D5/34B01D39/04
CPCB01D39/04B01D2239/0216D01D5/32D01D5/34D01F1/10D01F8/16
Inventor 宁新
Owner QINGDAO UNIV