High-temperature-oxidation-resistant composite nano PPS / Ti-SiOx short fiber and preparation method thereof

A technology of high-temperature anti-oxidation and short fibers, which is applied in the field of polyphenylene sulfide fiber, the preparation of the fiber, and anti-oxidation modified polyphenylene sulfide fiber, which can solve the problems of narrow temperature range and achieve improved anti-oxidation performance and filtration The effect of improving the retention rate of material strength and improving the degree of orientation

Active Publication Date: 2016-05-04
CHANGSHU GOLD SPRING CHEM FIBERS & KNITTINGS +1
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Problems solved by technology

[0007] Due to the strong sensitivity of PPS materials to spinni...

Method used

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  • High-temperature-oxidation-resistant composite nano PPS / Ti-SiOx short fiber and preparation method thereof
  • High-temperature-oxidation-resistant composite nano PPS / Ti-SiOx short fiber and preparation method thereof
  • High-temperature-oxidation-resistant composite nano PPS / Ti-SiOx short fiber and preparation method thereof

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Embodiment Construction

[0035] The following examples are only preferred technical solutions of the present invention, and are not intended to limit the present invention in any way. Various modifications and variations of the present invention will occur to those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

[0036] The raw material linear PPS resin used in this embodiment has a melt index of 160-190 g / 10 min, a glass transition temperature of 95-96°C, a melting point of 280-282°C, and a decomposition temperature of 488.2°C. The average particle size of nano Ti-SiOx is 20-50nm, and the specific surface area is 120m 2 / g, nano titanium dioxide content 1%.

[0037] Set the temperature of the melting and mixing zone of the twin-screw extruder at 190-240° C., and continue to keep warm and balance for 3 hours after the temperature r...

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Abstract

The present invention discloses a high-temperature-oxidation-resistant composite nano PPS / Ti-SiOx short fiber which is prepared as follows: adding nano Ti-SiOx into linear PPS resin to prepare composite nano PPS / Ti-SiOx masterbatch, melting the composite nano PPS / Ti-SiOx masterbatch at the low temperature of 295-320 DEG C and under pressure of 7-10Mpa to form a melt, spinning through a spinneret plate, and cooling and solidifying by a 20-30 DEG C circular air blow in the wind speed of 0.2-0.5m / s. The oxidative induction temperature of the prepared composite nano PPS / Ti-SiOx short fiber is 470-480 DEG C, after treatment at 230 DEG C for 72h, strength retention is 88% to 95%, and high temperature oxidation resistance can be improved significantly.

Description

technical field [0001] The invention belongs to the technical field of chemical fibers and relates to polyphenylene sulfide fibers, in particular to an anti-oxidation modified polyphenylene sulfide fiber and a preparation method of the fiber. Background technique [0002] Polyphenylene sulfide is referred to as PPS, and its structural formula is: [0003] . [0004] Fibers spun from polyphenylene sulfide have excellent temperature resistance, chemical resistance, insulation, flame retardancy and good cost performance. raw material. However, because the sulfur atom in the conventional PPS macromolecular structure contains two pairs of lone pairs of electrons, the chemical activity of the benzene ring and the sulfur atom is relatively strong. On the one hand, the sulfur atom is easily attacked by oxygen atoms in the air, and reactions such as oxidation and crosslinking occur. , on the other hand, the C-H bond energy in the benzene ring is low, and oxidative crosslinking i...

Claims

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Application Information

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IPC IPC(8): D01F6/94D01F1/10D01D5/08D01D5/088D01D10/00D01D10/02D01D1/10D01D4/02D02G1/20
CPCD01D1/106D01D4/02D01D5/08D01D5/088D01D10/00D01D10/02D01F1/10D01F6/94D02G1/205
Inventor 樊海冰张蕊萍连丹丹李嘉薇
Owner CHANGSHU GOLD SPRING CHEM FIBERS & KNITTINGS
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