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Polyethylene terephthalate and poly butylene succinate sheath-core fiber

A technology of polybutylene terephthalate and polybutylene succinate, which is applied in fiber treatment, conjugated synthetic polymer artificial filament, textiles and papermaking, and can solve the problems of difficult decomposition and low molecular weight , color yellowing and other problems, to achieve the effect of environmental protection, improve application performance, reduce printing and dyeing energy consumption

Inactive Publication Date: 2010-03-17
WUJIANG YINGXIANG CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the fiber field, people are increasingly favoring green fibers with environmental protection functions. Polylactic acid is the earliest fully degradable fiber. Lactic acid is mostly produced by biological fermentation, and polylactic acid is synthesized by enzyme catalysis, so the synthesis cost of polylactic acid High, and difficult to control the synthesis process
Aliphatic polyesters are also an important category of degradable polyesters. Among them, polybutylene succinate has a melting point of 115°C, has good stability, is not easy to decompose at room temperature, has good mechanical properties, and has the possibility of processing and application. , is currently a hot spot in the research of degradable polyester. At present, the polybutylene succinate synthesized in China has a low molecular weight and yellowish color, and is mostly used in the field of plastics. The application of polybutylene succinate in the textile field rarely seen

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment

[0028] Preparation of polybutylene succinate: the raw materials are butanediol and succinic acid, the molar ratio of addition is 1.13, the catalyst is sulfamic acid and tetrabutyl titanate, and the synthesis of polyester mainly includes esterification and polycondensation. In the continuous polymerization process, the esterification reaction is completed through two esterification tanks at normal pressure and reduced pressure, and the polycondensation reaction is completed through two tanks of pre-condensation and final polycondensation. In the synthesis of polybutylene succinate, catalysts, matting agents, stabilizers, synergists and flame retardants should be added. The amount added is the molar amount of butanediol, the catalyst and the polymerization raw materials enter into the esterification reaction together, and the matting agent, stabilizer, synergist and flame retardant are added in the final stage of the polycondensation reaction.

[0029] Catalyst Sulfamic Acid 200...

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Abstract

A polyethylene terephthalate and poly butylene succinate sheath-core fiber is characterized in that a sheath-core bicomponent fiber is made by joint spinning of the poly butylene succinate and the polyethylene terephthalate which are obtained by polymerization, wherein the sheath layer is the poly butylene succinate, the core layer is the polyethylene terephthalate, the sheath layer is completelywrapped on the core layer, the weight of the sheath layer accounts for 20-60 percent of total weight of the fiber, and the linear density range of the finished fiber is100-350dtex.

Description

technical field [0001] The invention relates to the field of bicomponent fiber preparation, in particular to a polybutylene terephthalate and polybutylene succinate sheath-core fiber. Background technique [0002] In the fiber field, people are increasingly favoring green fibers with environmental protection functions. Polylactic acid is the earliest fully degradable fiber. Lactic acid is mostly produced by biological fermentation, and polylactic acid is synthesized by enzyme catalysis, so the synthesis cost of polylactic acid Higher, and it is not easy to control the synthesis process. Aliphatic polyesters are also an important category of degradable polyesters. Among them, polybutylene succinate has a melting point of 115°C, has good stability, is not easy to decompose at room temperature, has good mechanical properties, and has the possibility of processing and application. , is currently a hot spot in the research of degradable polyester. At present, the polybutylene su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/14D01D5/34
Inventor 赵广兵王国柱沈家康钮真荣
Owner WUJIANG YINGXIANG CHEM FIBER
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