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Preparation method of far-infrared copolyester

A far-infrared, copolyester technology, applied in the field of polyester materials, can solve the problems of easy agglomeration, influence, poor dispersibility of inorganic far-infrared additives, etc., and achieve the effect of good dispersibility

Pending Publication Date: 2021-08-03
浙江理工大学桐乡研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the more traditional addition method at present is to compound the far-infrared additive in the polyester melting or spinning process after the polyester is produced. Due to the compatibility problem between the inorganic far-infrared additive and the organic polymer, the inorganic far-infrared additive Far-infrared additives have poor dispersion and are easy to agglomerate, which affects their function

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Mix bamboo charcoal powder and silicon carbide powder at a mass ratio of 1:9, then add zinc stearate with 1% mass of mixed powder and vinyltrimethoxysilane with 3.5% mass of mixed powder for grinding treatment After 3 hours, according to the ratio of 2% by mass, it was added into the mixed solvent of ethylene glycol and propylene glycol with a molar ratio of 90:10, stirred with an electric stirring paddle for 1 hour, and then placed in ultrasonic dispersion for 2.5 hours to obtain far-infrared Functional compound alcohol solution;

[0021] (2) Mix the far-infrared functional complex alcohol solution and terephthalic acid in an alkyd molar ratio of 1.6:1, add polycondensation catalyst ethylene glycol antimony at 3.5‰ of the mass of terephthalic acid, and heat while beating Stir for 2 hours, wait until the temperature reaches 230°C and the pressure is 0.2MPa, after the esterification reaction for 2.5 hours, the temperature in the kettle is raised to 283°C under normal...

Embodiment 2

[0024] (1) Mix bamboo charcoal powder and silicon carbide powder at a mass ratio of 1:1, then add 2% zinc stearate by mass of the mixed powder and 3% vinyltrimethoxysilane by mass of the mixed powder for grinding After 3 hours, according to the mass ratio of 2.5%, it was added into the mixed solvent of ethylene glycol and propylene glycol with a molar ratio of 80:20, stirred with an electric stirring paddle for 1 hour, and then placed in ultrasonic dispersion for 2.5 hours to obtain far-infrared Functional compound alcohol solution;

[0025] (2) Mix the far-infrared functional complex alcohol solution and terephthalic acid in an alkyd molar ratio of 1.6:1, add polycondensation catalyst ethylene glycol antimony at 3.5‰ of the mass of terephthalic acid, and heat while beating Stir for 2 hours, wait until the temperature reaches 235°C and the pressure is 0.2MPa, after the esterification reaction for 2.5 hours, the temperature in the kettle is raised to 284°C under normal pressure...

Embodiment 3

[0028] (1) Mix bamboo charcoal powder and silicon carbide powder at a mass ratio of 7:3, then add 2.5% zinc stearate and 2.5% vinyltrimethoxysilane for grinding After 3 hours, according to the ratio of 3% by mass, it was added into a mixed solvent of ethylene glycol and propylene glycol with a molar ratio of 50:50, stirred with an electric stirring paddle for 1 hour, and then placed in ultrasonic dispersion for 2.5 hours to obtain far-infrared Functional compound alcohol solution;

[0029] (2) Mix the far-infrared functional complex alcohol solution and terephthalic acid in an alkyd molar ratio of 1.6:1, add polycondensation catalyst ethylene glycol antimony at 3.5‰ of the mass of terephthalic acid, and heat while beating Stir for 2 hours, wait until the temperature reaches 233°C and the pressure is 0.25MPa, after the esterification reaction for 2.5 hours, the temperature in the kettle is raised to 284°C under normal pressure, and then the vacuum is started, and the polyconden...

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Abstract

The invention relates to the field of polyester materials, and discloses a preparation method of far-infrared copolyester, the preparation method comprises the following steps: mixing and grinding nanoscale tourmaline powder, nanoscale chromium boride powder, zinc stearate and gamma-ureido propyl triethoxy silane, adding into a mixed solvent of ethylene glycol and butanediol, stirring, ultrasonically dispersing, and obtaining a far-infrared functional compound alcohol solution; and (2) mixing the far-infrared functional composite alcohol solution with terephthalic acid, adding a polycondensation catalyst, pulping while heating and stirring, carrying out esterification reaction when the temperature reaches 230-250 DEG C and the pressure is 0.15-0.3 MPa, raising the temperature to 280-290 DEG C in a kettle under normal pressure, starting vacuumizing, carrying out polycondensation reaction, discharging and pelletizing to obtain the far-infrared functional copolyester. The functional polyester can be used for preparing products such as fibers, plastics, films and the like, and is widely applied to the field of far infrared health-care functions.

Description

technical field [0001] The invention relates to the field of polyester materials, in particular to a preparation method of far-infrared copolyester. Background technique [0002] Copolyester, a general term for polymers obtained by polycondensation of polyols and polyacids, is a class of engineering plastics with excellent performance and a wide range of uses. It can also be made into polyester fiber and polyester film. Polyester includes polyester resins and polyester elastomers. Fiber-grade polyester chips are used to manufacture polyester staple fibers and polyester filaments. They are raw materials for polyester fiber enterprises to process fibers and related products. The market changes and development trends of polyester series are the focus of the chemical fiber industry. [0003] With the increase of people's demand for fiber functionalization, more and more functional fibers are gradually developed. Far-infrared fibers are usually added with far-infrared additive...

Claims

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Application Information

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IPC IPC(8): C08G63/183C08G63/78C08K9/06C08K9/04C08K3/38
CPCC08G63/183C08G63/78C08K9/06C08K9/04C08K3/38C08K2201/011C08K2003/387
Inventor 孙福罗海林
Owner 浙江理工大学桐乡研究院有限公司