Method for manufacturing polyphenylene sulfide meltblown fiber products

A technology of meltblown fibers and polyphenylene sulfide, which is applied in the field of manufacturing fiber-grade polyphenylene sulfide meltblown fibers, can solve the problems of unclear mechanical properties, no polyphenylene sulfide meltblown fibers, and insufficient mechanical strength of fibers.

Active Publication Date: 2010-06-16
德阳科吉高新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of these methods is that the mechanical strength of the product fiber is still not high enough. Although US5405695 divides the heating zone of the melting-filament extruder into three zones, it is only possible to produce long fibers, and its mechanical properties are also unclear; the above patents Both use fiber-grade polyphenylene sulfide resin for melt spinning, and domestic and for

Method used

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  • Method for manufacturing polyphenylene sulfide meltblown fiber products
  • Method for manufacturing polyphenylene sulfide meltblown fiber products
  • Method for manufacturing polyphenylene sulfide meltblown fiber products

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Polyphenylene sulfide melt-blown fiber non-woven fabric, the process is: fiber-grade polyphenylene sulfide resin premixing treatment - vacuuming, twin-screw extruder melting - melt metering pump - forced filtration, spinneret assembly ——Silk melt blown——High pressure nitrogen gas cutting——Fiber non-woven fabric. The following process conditions were used.

[0021] With oligomer, cyclic compound, reaction by-product, reaction auxiliary agent impurity content is no more than 0.1% in resin, weight average molecular weight is 99.5kg of fiber grade polyphenylene sulfide resin of 50,000 and its polydispersity coefficient is 1.88, Add 0.5kg (0.5%) antistatic agent antistatic agent lauryl amidopropyltrimethylammonium methyl sulfate into fiber-grade polyphenylene sulfide resin, stir evenly through a high-speed mixer, and then extrude through a twin-screw extruder, The melt-blown fiber resin chips are obtained, and then the resin is dried at 110-160° C. for 2-8 hours; the drying...

Embodiment 2

[0026] Weight-average molecular weight is 99.4kg at 60,000 and its polydispersity coefficient is the fiber grade polyphenylene sulfide resin of 1.9, with 0.6kg (0.6%) antistatic agent antistatic agent N, N-two (2-hydroxyethyl)- N-(3'-dodecyloxy-2'-hydroxypropyl)methylammonium methyl sulfate was added to fiber grade polyphenylene sulfide resin. All the other process control conditions are identical with example 1.

[0027] The frequency of the frequency conversion motor of the metering pump is 10 Hz, the pressure of the spinneret assembly is 15.0Mpa. The spinneret aperture is 0.3mm, the temperature of the spinning box is 335°C, and the spinning temperature is 335°C; the temperature of 40Mpa high-pressure nitrogen is 120°C, and the angle is 30° , the speed is 880m / s, the temperature of the cooling nitrogen is kept at 8°C, and the fiber-grade polyphenylene sulfide resin is melt-blown by using the above process conditions to obtain the polyphenylene sulfide melt-blown fiber; then ...

Embodiment 3

[0029] Weight-average molecular weight is 98.5kg at 50,000 and its polydispersity coefficient is the fiber grade polyphenylene sulfide resin of 1.86, and 1.5kg (1.5%) antistatic agent trihydroxyethyl methyl quaternary ammonium methyl sulfate methyl ester salt is added fiber grade polyphenylene sulfide resin In phenylene sulfide resin. All the other processing conditions are identical with example 1

[0030] The frequency of the frequency conversion motor of the metering pump is 22 Hz, the pressure of the spinneret assembly is 28.0Mpa, the spinneret aperture is 0.5mm, the temperature of the spinning box is 315°C, and the spinning temperature is 315°C; the temperature of the 33Mpa high-pressure nitrogen is 110°C, and the angle is 25° , the speed is 871m / s, the temperature of cooling nitrogen is kept at 8°C, and the fiber-grade polyphenylene sulfide resin is melt-blown by using the above process conditions to obtain polyphenylene sulfide melt-blown fibers; The phenylene sulfide m...

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Abstract

The invention discloses a method for manufacturing polyphenylene sulfide meltblown fiber products, which is characterized in that polyphenylene sulfide resin meltblown fibers are used as the raw materials, undergo resin premixing and are melted, pelletized, chipped, melted, extruded and blown by a double-screw extruder after high-speed stirring and mixing and then are cut by 30-40MPa of high pressure nitrogen to obtain polyphenylene sulfide meltblown short fibers which are rapidly cooled by the nitrogen at 8-10 DEG C; and in the process of resin premixing, 98.5-99.5% of polyphenylene sulfide resins with weight-average molecular weight between 50 thousand and 60 thousand and molecular weight distribution coefficient between 1.8 and 19, and 0.5-1.5% of antistatic agents are employed. The polyphenylene sulfide meltblown fibers, non-woven fabrics and fiber paper manufactured by the invention are widely used in such high technology fields as environmental protection, electronics, aviation and the like.

Description

Technical field [0001] The invention belongs to the field of manufacturing special fibers, in particular to a method for manufacturing fiber-grade polyphenylene sulfide meltblown fibers. Background technique [0002] Polyphenylene sulfide has excellent chemical resistance and thermal stability at high temperature, and has flame retardancy, insulation, radiation resistance and good mechanical properties; in order to expand the scope of use of this material, researchers from various countries have been looking for A new approach to fibrosis. [0003] Disclosed in Chinese patent CN1603477 is a kind of method of melt spinning and stretching heat setting of linear high molecular weight polyphenylene sulfide fiber grade resin; Chinese patent CN1876906 discloses the manufacture method of polyphenylene sulfide long fiber; The method of polyphenylene sulfide fiber obtained by melting polyphenylene sulfide resin is introduced in . The disadvantage of these methods is that the mechan...

Claims

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Application Information

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IPC IPC(8): D01D5/26D04H1/54D01F6/94D01F1/09
Inventor 陈逊
Owner 德阳科吉高新材料有限责任公司
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