Preparation method of polyphenylene sulfide superfine fiber
A polyphenylene sulfide and ultra-fine fiber technology, applied in the direction of melt spinning, conjugated synthetic polymer rayon, etc., can solve the problem of increasing the diameter of the polyphenylene sulfide island phase, increasing the content of polyphenylene sulfide, and affecting the Product performance and other issues, to achieve the effects of good hand feel, uniform island phase distribution, and simple preparation method
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Embodiment 1
[0027] The fiber-grade polyphenylene sulfide chips with a melt index of 110 g / 10 min were dried in a vacuum drying oven at 120° C. for 12 hours, and the polyamide chips with a relative viscosity of 2.8 were dried in a vacuum drying oven at 90° C. for 12 hours. After the two are evenly blended with the mass fraction of polyphenylene sulfide / polyamide as 40 / 60, they are placed in a screw spinning machine for blending and spinning. The spinning temperature is 285 ° C. The primary polyphenylene sulfide / polyamide The blended fiber was stretched and heat-set at 120°C, and the drafting ratio was 3 times to obtain a structurally stable polyphenylene sulfide / polyamide blended fiber, and the strength of the blended fiber could reach 5.74cN / dtex.
[0028] The polyphenylene sulfide / polyamide blended fiber is dissolved in a formic acid solution at 25° C. for 1-3 hours to obtain the polyphenylene sulfide superfine fiber. The distribution of fiber diameters was 25-205 nm, with an average dia...
Embodiment 2
[0030] The fiber-grade polyphenylene sulfide chips with a melt index of 110 g / 10 min were dried in a vacuum drying oven at 120° C. for 12 hours, and the polyamide chips with a relative viscosity of 2.8 were dried in a vacuum drying oven at 90° C. for 12 hours. After blending the two evenly with the mass fraction of polyphenylene sulfide / polyamide as 50 / 50, put them into a screw spinning machine for blending and spinning at a spinning temperature of 285°C, and the primary polyphenylene sulfide / polyamide The blended fiber was stretched and heat-set at 120°C, and the drafting ratio was doubled to obtain a structurally stable polyphenylene sulfide / polyamide blended fiber, and the strength of the blended fiber could reach 2.59cN / dtex.
[0031] The polyphenylene sulfide / polyamide blended fiber is dissolved in a formic acid solution at 25° C. for 1-2.5 hours to obtain the polyphenylene sulfide superfine fiber. The distribution of fiber diameters was 45-277 nm, with an average diamete...
Embodiment 3
[0033] The fiber-grade polyphenylene sulfide chips with a melt index of 110 g / 10 min were dried in a vacuum drying oven at 120° C. for 12 hours, and the polyamide chips with a relative viscosity of 2.8 were dried in a vacuum drying oven at 90° C. for 12 hours. After blending the two evenly with the mass fraction of polyphenylene sulfide / polyamide as 50 / 50, put them into a screw spinning machine for blending and spinning at a spinning temperature of 285°C, and the primary polyphenylene sulfide / polyamide The blended fiber was stretched and heat-set at 120°C, and the drafting ratio was 3 times to obtain a structurally stable polyphenylene sulfide / polyamide blended fiber, and the strength of the blended fiber could reach 3.69cN / dtex.
[0034] The polyphenylene sulfide / polyamide blended fiber is dissolved in a formic acid solution at 25° C. for 1-2.5 hours to obtain the polyphenylene sulfide superfine fiber. The distribution of fiber diameters was 39-304 nm, with an average diamete...
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