Jiangsu Hengli Chemical Fibre Co., Ltd.

Yiwei Shao

Fangming Tang

Lili Wang

Hongwei Fan

Shanshui Wang

Lixin Yin

Chaoming Yang

Ye Zhang

Guanfan Jin

Xiaoyu Wang

Zhujun Ding

Lijun Wang

Yanli Zhao

Huaizhi Zhuo

A high-strength thermal-stability polyester industrial yarn is prepared by spinning, winding and coordination treatment of a modified polyester after a solid-state polycondensation; wherein the method of coordination treatment comprises: soaking the wound fiber in an aqueous solution of a coordination agent, and the concentration of the aqueous solution of the coordination agent is 0.1-0.2 mol/L; wherein the condition of coordination treatment is 48-72 hours at 80-100° C., and the concentration of the aqueous solution of the coordination agent is 0.1-0.2 mol/L; wherein the polyester segments of the prepared high-strength thermal-stability polyester industrial yarn comprises a terephthalic acid segment, an ethylene glycol segment and a 2,6-pyridinedicarboxylic acid segment, and 2,6-pyridinedicarboxylic acid segments of different polyester segments are coordinated by Fe, the molar ratio of the terephthalic acid segment to the 2,6-pyridinedicarboxylic acid segment is 1:(0.03-0.05).

High-strength thermal-stability polyester industrial yarn and preparation method thereof

A low-shrinkage polyester industrial yarn and a preparation method thereof are provided. The preparation method includes the following steps: subjecting the modified polyester to polycondensation, melting, measuring, extruding, cooling, oiling, stretching, heat setting and winding, wherein the content of the crown ether in the oil agent is 67.30-85.58 wt %. The material of the prepared low shrinkage polyester industrial yarn is a modified polyester, the molecular chain of the modified polyester includes a terephthalic acid segment, an ethylene glycol segment, and a branched diol segment, and the structural formula of the branched diol is as follows:  Wherein Rand Rare each independently selected from a linear alkylene group having 1-3 carbon atoms, Ris selected from an alkyl group having 1-5 carbon atoms, and Ris selected from an alkyl group consisting of 2-5 carbon atoms.

Low-shrinkage polyester industrial yarn and preparation method thereof

A low chromatic aberration polyester different-shrinkage composite yarn is made of polyester POY yarn and polyester FDY composite yarn. The polyester POY yarn and polyester FDY yarn is obtained by spinning the polyester solution, the rupture strength of the low color polyester different-shrinkage composite yarn is &#x2265;1.9 cN/dtex, the elongation at break is 30.0&#xb1;5.0%, the crimp shrinkage is 2.50&#xb1;3.0%, the network degree is 20&#xb1;5/m, the color difference &#x394;E is less than 0.200. In the invention, the magnesium ethylene glycol is relatively mild, the thermal degradation coefficient is small, the oligomers in the polymerization process is reduced, and the oligomers in the dissolution process are further reduced, so that the appearance of stains and streaks reduces during the dyeing and post-processing heat setting of the polyester fiber, which ensures the fiber's leveling and rubbing fastness.

Low chromatic aberration polyester different-shrinkage composite yarn

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Wujiang, China

Yiwei Shao