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Production method and device of doping modified copolyester and profiled fiber

A special-shaped fiber and manufacturing method technology, applied in the direction of single-component polyester rayon, fiber treatment, rayon manufacturing, etc., can solve the problems of affecting the mechanical function and quality effect of polyester, no consideration, poor mutual integration, etc.

Inactive Publication Date: 2018-07-20
东南新材料(杭州)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, for the research on functional polyesters, people only focus on the additives with certain functions added in the synthesis process of polyester synthesis monomers PTA and ethylene glycol, so as to endow polyester with certain functions, so the above method It has the following disadvantages: 1) Since the polyester is directly synthesized after PTA and ethylene glycol polymerization, the interaction time between the additive and the polyester is short, the mutual fusion is poor, and the synergistic effect is not sufficient, so the effect of the additive cannot be fully exerted; 2) It is easy to produce many side reactions, which will affect the overall functions and quality effects of polyester mechanics.
[0006] The preparation of existing PTA is mainly considered from the purification process, that is, to reduce the content of impurities such as p-carboxybenzaldehyde, and reduce the influence of such impurities on the reaction of PTA in the subsequent polycondensation reaction, and hardly consider the development of some new PTA varieties or Modified PTA is used in some special materials, such as the preparation of modified polyester materials with special functions, etc., so the PTA products on the market are single and functional

Method used

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  • Production method and device of doping modified copolyester and profiled fiber
  • Production method and device of doping modified copolyester and profiled fiber

Examples

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Effect test

Embodiment 1

[0033] A kind of manufacturing method of doping modified copolyester, special-shaped fiber, it is characterized in that this preparation method adopts following steps:

[0034] Step 1): In parts by mass, 10 parts by mass fraction of 20% trifluoroacetic acid aqueous solution, 0.2 part of magnesium aluminum hydrotalcite, 1.0 part of nanoscale conductive mica powder, and 2 parts of perchloric acid with a mass fraction of 15% Mix the aqueous solution and 0.2 parts of silicon oxide whiskers evenly, place it at 50°C, grind it with a liquid-phase high-energy ball mill for 3 hours, move it to a hydrothermal reaction kettle lined with titanium, and treat it at 150°C and 2MPa for 10 hours. Take it out, atomize and dry it, place it at 500°C for calcination for 3 hours, grind it with a ball mill for 2 hours, move it to a stirred plasma reactor, use nitrogen as the carrier gas, and perform radio frequency plasma treatment at 40Pa and 30W for 0.5h. Add it to 8 parts of organic silicon ethan...

Embodiment 2

[0040] A kind of manufacturing method of doping modified copolyester, special-shaped fiber, it is characterized in that this preparation method adopts following steps:

[0041] Step 1): In parts by mass, 12.5 parts by mass fraction of 20% trifluoroacetic acid aqueous solution, 0.5 part of magnesium aluminum hydrotalcite, 1.75 parts of nanoscale conductive mica powder, 5 parts by mass fraction of 15% perchloric acid Mix the aqueous solution and 0.6 parts of silicon oxide whiskers evenly, place it at 52.5°C, grind it with a liquid-phase high-energy ball mill for 4.5h, move it to a titanium-lined hydrothermal reactor, and treat it at 175°C and 3MPa for 11h , taken out and atomized and dried, placed at 525°C for calcination for 4 hours, ground with a ball mill for 3 hours, moved to a stirred plasma reactor, and carried out radio frequency plasma treatment at 50Pa and 55W for 1 hour with nitrogen as the carrier gas. Add it to 9 parts of organic silicon ethanol solution with a mass ...

Embodiment 3

[0048] A kind of manufacturing method of doping modified copolyester, special-shaped fiber, it is characterized in that this preparation method adopts following steps:

[0049] Step 1): In parts by mass, 15 parts by mass fraction of 20% trifluoroacetic acid aqueous solution, 0.8 parts of magnesium aluminum hydrotalcite, 2.5 parts of nanoscale conductive mica powder, and 8 parts by mass fraction of 15% perchloric acid The aqueous solution and 1.0 parts of silicon oxide whiskers are mixed evenly, placed at 55°C, ground for 6 hours with a liquid-phase high-energy ball mill, moved to a hydrothermal reaction kettle lined with titanium, and treated at 200°C and 4MPa for 12 hours. Take it out and atomize and dry it, place it at 550°C for calcination for 5 hours, grind it with a ball mill for 4 hours, move it to a stirred plasma reactor, use nitrogen as the carrier gas, and perform radio frequency plasma treatment at 60Pa and 80W for 1.5 hours. Add it to 10 parts of organic silicon et...

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Abstract

The invention discloses a production method and device of doping modified copolyester and profiled fiber. A trifluoroacetic acid aqueous solution, a perchloric acid aqueous solution, Mg-Al hydrotalcite, silica whiskers, white carbon black and conductive mica powder are mixed in proportion and pretreated, doping modified powder is prepared and fused with CTA slurry, oxidation crystallization with adisc-shaped secondary oxidation crystallization kettle and crystallization with No.1 and No.2 frustum-shaped crystallization kettles are performed, hydrofining is performed, doping modified PTA is prepared, the doping modified PTA, ethylene glycol and PTA are subjected to copolycondensation, the doping modified copolyester is prepared, and the profiled fiber is prepared through melt spinning withan open spinneret orifice. The antistatic performance of polyester and polyester fiber is improved, moisture in the air can be absorbed, accumulated charges can be transferred timely, a flame retardant function is realized, the comprehensive performance of fiber is substantially improved, the use field of the fiber is broadened, the thermal rheological property of a polyester material is improved, melt spinning forming and drafting are facilitated, and the surface finish is substantially improved.

Description

technical field [0001] The invention relates to a method for manufacturing copolyester and special-shaped fiber and its device, more specifically, to a method for manufacturing doped modified copolyester and special-shaped fiber and its device. Background technique [0002] Polyester is polyethylene terephthalate PET, which is made from PTA or dimethyl terephthalate DMT and ethylene glycol EG through esterification or transesterification and then polycondensation reaction. The synthetic polyester fiber, the trade name is polyester, which is the largest variety of synthetic fiber at present. Because the rigidity of the fiber macromolecular chain is relatively large, the elastic modulus is high, and the fiber is not easily deformed, the fabric strength is good, and it is not easy to wash after washing. Wrinkle, no ironing, firm and scratchable, easy to wash and dry, so it is an ideal textile material for clothing. [0003] Polyester can be used to make special materials such ...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10D01D5/253D01D5/24D01D5/08D01D1/00
CPCD01D1/00D01D5/08D01D5/24D01D5/253D01F1/10D01F6/92
Inventor 王官军宋森林王冲施良孙佳明
Owner 东南新材料(杭州)股份有限公司
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