A high-efficiency melt-spinning method for low-damping polymers

A technology of melt spinning and low damping, applied in the direction of conjugated synthetic polymer rayon, one-component polyester rayon, one-component polyamide rayon, etc., which can solve the lack of melt rheological resistance Necessary considerations and other issues to achieve the effect of low surface energy and simple installation

Active Publication Date: 2019-02-26
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the Chinese patent CN102206879 A, ​​the negative pressure spinning condition (0.01-0.001MPa) is designed in the fiber forming process to improve the spinning speed of the fiber by reducing the air friction resistance, but the rheological resistance of the melt is Lack of necessary considerations, and rheological resistance is one of the key factors for the improvement of fiber spinning speed and quality

Method used

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  • A high-efficiency melt-spinning method for low-damping polymers
  • A high-efficiency melt-spinning method for low-damping polymers

Examples

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Effect test

Embodiment 1

[0054] A method for high-efficiency melt spinning of low-damping polyethylene terephthalate short fibers. First, a polysiloxane treatment liquid is prepared. First, 10 parts by weight have a pH value of 10.1 and a solid content of 30 wt%. The average particle diameter is the alkaline silica sol of 30nm and 10 parts of pH value are 9.4, and solid content is 20wt%, and the basic aluminum sol of average particle diameter is 45nm to mix, then add 5 parts of formic acid as catalyst adjustment system pH value, make pH value is maintained at 2, then add 10 parts of mixed solvent of ethanol and water, the volume ratio of ethanol and water is 1.25:1, then add 30 parts of methyltrimethoxysilane, then carry out hydrolysis at normal temperature for 15min, and then put Put the system at 45°C for high-temperature condensation, and keep the reaction for 30 minutes. After the reaction, add 1 part of the mixture of leveling agent BYK 310, defoamer BYK 025 and surface hardening and wear-resistan...

Embodiment 2

[0065]A method for high-efficiency melt spinning of low-damping polyethylene terephthalate short fibers. First, a polysiloxane treatment solution is prepared. First, 20 parts by weight have a pH value of 10.5 and a solid content of 45 wt%. The average particle diameter is the alkaline silica sol of 50nm and 20 parts of pH values ​​are 9.8, solid content is 35wt%, and the basic aluminum sol of average particle diameter is 65nm to mix, then add 8 parts of acetic acid as catalyst adjustment system pH value, make pH value is maintained at 4.5, then add 20 parts of isopropanol and water mixed solvent, the volume ratio of isopropanol and water is 1.42:1, then add 40 parts of methyltriethoxysilane, and then hydrolyze at room temperature 20min, then put the system at 80°C for high-temperature condensation, and keep the reaction for 75min. After the reaction, add 3 parts of leveling agent BYK 310, defoamer BYK 025 and surface hardening resistance Abrasive T801 mixture additive, after s...

Embodiment 3

[0076] A method for high-efficiency melt spinning of low-damping polytrimethylene terephthalate short fibers. First, a polysiloxane treatment solution is prepared. First, 15 parts by weight of The alkaline silica sol with a diameter of 40nm and 15 parts of alkaline aluminum sol with a pH value of 9.6, a solid content of 30wt%, and an average particle diameter of 50nm are mixed, and then 6 parts of hydrochloric acid are added as a catalyst to adjust the pH value of the system to maintain the pH value. In 3, then add 15 parts of butanol and water mixed solvent, the volume ratio of butanol and water is 1.60:1, then add 35 parts of ethyltriethoxysilane, then carry out hydrolysis at normal temperature for 18min, and then Put the system at 50°C for high-temperature condensation, and keep the reaction for 40 minutes. After the reaction, add 2 parts of BYK 310 leveling agent, BYK 025 defoamer and T801 surface hardening and wear-resistant agent with a mass ratio of 1:1:0.25. Mixture ad...

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Abstract

A high efficiency melt spinning method employing a low damping polymer comprises: performing melt spinning on a polymer melt by means of a low damping micro hole, the low damping micro hole having a surface energy of En ≤ 35 mJ / cm2, a surface roughness of Ra ≤ 0.2 μm, and a surface static contact angle of WCA ≥ 85°. The low damping micro hole is formed by taking a spinneret as a stationary bed and a polysiloxane treatment liquid as a flowing liquid; causing the flowing liquid to flow out of a micro hole of the spinneret at a temperature of 70°C-85°C; performing preliminary curing at a temperature of 95°C-120°C; performing curing again at a temperature of 200°C-230°C; and performing final curing at a temperature of 260°C-280°C.

Description

technical field [0001] The invention belongs to the field of melt spinning and relates to a high-efficiency melt spinning method for low-damping polymers. Background technique [0002] China is a big country of chemical fiber, and chemical fiber is an important raw material in the textile field. In terms of chemical fiber output, China's chemical fiber production capacity reached 43.9 million tons in 2014, of which polyester fiber accounted for more than 70% of the total chemical fiber output. In 2013, my country's polyamide fiber output was 2.1128 million tons, a year-on-year increase of 12.44%, accounting for about 6.3% of the total synthetic fiber output. Polyamide fiber has excellent physical properties unmatched by polyester fiber. For example, polyamide fiber has high breaking strength, wear resistance ranks the top among general textile fibers, good hygroscopicity, excellent elastic recovery rate and fatigue resistance, and good dyeing property. . In addition to cl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D4/02D01F6/62D01F8/14D01F6/60D01F8/12D01F6/04D01F6/06D01F8/06
CPCD01D4/02D01F6/04D01F6/06D01F6/60D01F6/62D01F8/06D01F8/12D01F8/14
Inventor 王华平吉鹏王朝生李建武江振林陈烨王知言
Owner DONGHUA UNIV
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