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PBT (polybutylece terephthalate) fiber manufacturing process

A manufacturing process and fiber technology, applied in the field of PBT fiber manufacturing process, can solve the problems of poor heat resistance of PBT fiber, uneven dyeing of finished silk, low glass transition temperature, etc., and achieve high elastic chemical and mechanical properties, excellent chemical properties. and mechanical properties, good color fastness

Inactive Publication Date: 2017-11-03
TAICANG RONGWEN SYNTHETIC FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to the lower glass transition temperature of PBT, the fiber crystallization speed is 10 times faster than that of PET during the fiber forming process, and crystallization begins during the spinning cooling process. The rapid crystallization results in incomplete crystallization in the obtained fiber structure. It is quite unfavorable to post-stretching, and it is easy to cause uneven dyeing of finished silk. At the same time, the heat resistance of PBT fiber is poor, which limits its development in fire protection and other neighborhoods. The use of composite spinning technology can bring new possibilities to PBT fiber. The characteristics of improved PBT fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The addition amount of each component in the step S1 is: ethylene terephthalate: butanediol is 1:1.4; The mole percentage of ethylene formate is 6%; the mass percentage of ethylene glycol relative to ethylene terephthalate is 1%.

[0033] Nano metal oxide is 5% of modified PBT polyester quality in step S2, and its particle diameter is 100nm, and described metal oxide is the mixture of nano zinc oxide and silver oxide, and wherein the ratio of zinc oxide and silver oxide is 3: 1.

[0034] In step S2, the amount of PET added is 30% of the mass of the modified PBT polyester, and the amount of PTT added is 30% of the mass of the modified PBT polyester.

[0035] In step S3, the aramid fiber is aramid fiber 1313, the ratio of the aramid spinning stock solution to the blended modified PBT melt is 1:5, and the blended modified PBT melt is the core, and the aramid melt is the sheath.

[0036] In step S3, in the two-component composite spinning, the spinning temperature of the ...

Embodiment 2

[0042] The addition amount of each component in step S1 is: ethylene terephthalate: butanediol is 1:1.5; The mole percentage of ethylene formate is 8%; the mass percentage of ethylene glycol relative to ethylene terephthalate is 1.5%.

[0043] Nano metal oxide is 5% of modified PBT polyester quality in step S2, and its particle diameter is 150nm, and described metal oxide is the mixture of nano zinc oxide and silver oxide, and wherein the ratio of zinc oxide and silver oxide is 3: 1.

[0044] In step S2, the amount of PET added is 40% of the mass of the modified PBT polyester, and the amount of PTT added is 40% of the mass of the modified PBT polyester.

[0045] In step S3, the aramid fiber is aramid fiber 1313, the ratio of the aramid fiber spinning stock solution to the blended modified PBT melt is 1:6, and the blended modified PBT melt is the core, and the aramid fiber melt is the sheath.

[0046] In step S3, in the two-component composite spinning, the spinning temperatu...

Embodiment 3

[0052] The addition amount of each component in step S1 is: ethylene terephthalate: butanediol is 1:1.4; The mole percentage of ethylene formate is 4%; the mass percentage of ethylene glycol relative to ethylene terephthalate is 2%.

[0053] Nano metal oxide is 8% of modified PBT polyester quality in step S2, and its particle diameter is 120nm, and described metal oxide is the mixture of nano zinc oxide and silver oxide, and wherein the ratio of zinc oxide and silver oxide is 5: 1.

[0054] In step S2, the amount of PET added is 50% of the mass of the modified PBT polyester, and the amount of PTT added is 50% of the mass of the modified PBT polyester.

[0055] In step S3, the aramid fiber is aramid fiber 1313, the ratio of the aramid spinning stock solution to the blended modified PBT melt is 1:3, and the blended modified PBT melt is the core, and the aramid melt is the sheath.

[0056] In step S3, in the two-component composite spinning, the spinning temperature of the blen...

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Abstract

The invention discloses a PBT (polybutylece terephthalate) fiber manufacturing process. The manufacturing process comprising the following steps: copolymerizing ethylene glycol terephthalate, butanediol, sulfonate and a hydrophilic group to obtain modified PBT polyester, preparing the modified PBT polyester into modified PBT polyester chips; drying the modified PBT polyester chips, and placing the dried modified PBT polyester chips and dried metal oxide, PET, PTT into a screw extruder to be heated and blended to obtain blended modified PBT spinning melt; preparing the blended modified PBT spinning melt and spinning solution prepared from an aramid polymer into a core-sheath compound fiber through two-component compound spinning. The PBT fiber prepared by the invention has good air permeability and dyefastness, high elasticity, antibacterial property and excellent chemical and mechanical performance, and has antistatic performance of PTT and relatively good heat resistance.

Description

technical field [0001] The invention relates to the technical field of fiber manufacturing, in particular to a PBT fiber manufacturing process. Background technique [0002] With the improvement of the quality of life, consumers' demand for multi-functional textiles such as comfort, leisure, and beauty is increasing. In order to meet this demand, more and more attention is paid to the application and development of multi-functional fibers in the process of textile development. Elastic fibers occupy a solid position in the world's textile industry. Due to the excellent fit and shape of elastic fabrics, elastic fabrics have been favored by consumers since their appearance. [0003] In the 1970s, polybutylene terephthalate (PBT) polymer materials were successfully polymerized. The output of PET fibers in my country in 2016 exceeded 39 million tons, and the output of PBT fibers was only 100,000 tons. In 2010, the output of PET fibers exceeded 25 million tons. tons, PBT fiber is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01F8/12D01F1/10D01F1/09D01D5/34C08G63/688
CPCD01F8/14C08G63/6886D01D5/34D01F1/09D01F1/103D01F8/12
Inventor 全潇
Owner TAICANG RONGWEN SYNTHETIC FIBER
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