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Colored polyester lifting belt and preparation method thereof

A technology for colored polyester and slings, applied in stretch spinning, rayon manufacturing, textiles, etc. It can solve the problems of high equipment requirements, low dyeing rate of polyester slings, and high dyeing costs, so as to reduce dyeing temperature and shorten dyeing time. The time, the effect of improving the dyeing performance

Active Publication Date: 2019-05-10
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of low dyeing rate, high equipment requirements and high dyeing cost of prior art polyester slings, to provide a colored polyester sling with excellent dyeing performance and good antistatic and anti-ultraviolet properties and its preparation method

Method used

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  • Colored polyester lifting belt and preparation method thereof
  • Colored polyester lifting belt and preparation method thereof
  • Colored polyester lifting belt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The preparation method of colored polyester sling, the steps are as follows:

[0063] (1) prepare modified polyester;

[0064] (1.1) Synthesis of 2,2,5,5-tetramethyl-3,4-hexanediol, the method is as follows: first, the molar ratio of 2,2-methylpropanal and sulfuric acid is 1.5:1 2,2-Methylpropionaldehyde solution with a concentration of 320g / L and dilute sulfuric acid solution with a concentration of 200g / L are mixed and added to the cathodic electrolytic cell, and then the mixed solution is cooled to 12°C, followed by electrolytic reduction to 2,2 -The concentration of methapropanal is 9.5wt%, and finally cooling crystallization, separation and purification are carried out, and the schematic diagram of the reaction device adopted in the synthesis process is as follows figure 1 As shown, the reaction chemical equation is as follows:

[0065]

[0066] The structural formula of the obtained 2,2,5,5-tetramethyl-3,4-hexanediol is shown in formula (I), where R 2 for -H; ...

Embodiment 2

[0087] The preparation method of colored polyester sling, the steps are as follows:

[0088] (1) prepare modified polyester;

[0089] (1.1) Synthetic 2,2,5,5-tetramethyl-3,4-diethyl-3,4-hexanediol, the method is: at first, press 2,2-dimethyl 3-pentanone and The molar ratio of sulfuric acid is that the ratio of 1.6:1 concentration is that the 2,2-dimethyl 3-pentanone solution of 350g / L and the dilute sulfuric acid solution of 210g / L are mixed and added in the cathodic electrolytic cell, then, the mixed Liquid cooling to 11 ° C, followed by electrolytic reduction to a concentration of 9.0 wt% of 2,2-dimethyl-3-pentanone, and finally cooling crystallization, separation and purification, the reaction device used in the synthesis process and the reaction chemical equation Consistent with Example 1, the structural formula of the prepared 2,2,5,5-tetramethyl-3,4-diethyl-3,4-hexanediol is shown in formula (I), where R 2 for -CH 2 CH 3 ;

[0090] (1.2) Preparation of 3-trimethylsi...

Embodiment 3

[0107] The preparation method of colored polyester sling, the steps are as follows:

[0108] (1) prepare modified polyester;

[0109] (1.1) Synthesis of 2,2,4,4-tetramethyl-3,4-di-tert-butyl-3,4-hexanediol, the method is: first, according to 2,24,4-tetramethyl 3- The molar ratio of pentanone to sulfuric acid is 1.7:1. Mix the 2,24,4-tetramethyl-3-pentanone solution with a concentration of 340g / L and the dilute sulfuric acid solution with a concentration of 230g / L into the cathode electrolytic cell , and then, the mixed solution was cooled to 10°C, followed by electrolytic reduction to a concentration of 9.6 wt% of 2,24,4-tetramethyl-3-pentanone, and finally cooled crystallization, separation and purification, using the The reaction device and reaction chemical equation are consistent with embodiment 1, and the structural formula of the 2,2,4,4-tetramethyl-3,4-di-tert-butyl-3,4-hexanediol that makes is as formula (Ⅰ ), in the formula, R 2 for -C(CH 3 ) 3 ;

[0110] (1.2) ...

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Abstract

The invention relates to a colored polyester lifting belt and a preparation method thereof. The preparation method comprises the steps of carrying out doubling, dyeing, antistatic finishing, anti-ultraviolet finishing, weaving, core penetration and sewing on a modified polyester industrial yarn, so as to obtain the colored polyester lifting belt, wherein the modified polyester industrial yarn is prepared from a modified polyester melt through solid-phase condensation polymerization tackifying, melting, metering, extrusion, cooling, oiling, heat shaping and winding. A preparation method of polyester before solid-phase condensation polymerization tackifying comprises the steps of uniformly mixing terephthalic acid, glycol, dihydric alcohol with a trimethyl silicon lateral group and hexanediol with a tertiary butyl lateral group, and sequentially carrying out esterification reaction and condensation polymerization reaction. The dyeing rate of the modified polyester industrial yarn is 87.6%-93.2% at 130 DEG C. The UV-A transmissivity of the colored polyester lifting belt is 1.7%-3.0%. The preparation method is simple in process and low in cost; and the prepared product has high dyeingperformance and a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of modified polyester fibers, and relates to a colored polyester lifting belt and a preparation method thereof. Background technique [0002] Wire rope is a traditional hoisting tool. Because it is easy to cause a certain degree of damage and damage to objects, hoisting belts have emerged since the 1950s. They have gradually replaced wire ropes and are widely used in ships, ports, Metallurgy, iron and steel, machinery, construction sites, mines, petroleum, chemical industry, hydropower stations, ports, docks, electric power, electronics, warehouses, transportation and military and other fields. [0003] Since the sling needs to be able to withstand large tension and its operating environment is relatively harsh, this puts forward certain requirements for its material. Polyester industrial yarn has the advantages of high modulus, low elongation, good heat resistance, strong acid resistance and fatigue resist...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10C08G63/695C08G63/86D01D5/088D01D5/16D01D10/02D03D1/00D03D13/00D03D15/00D06B3/18D03D15/283D03D15/37D03D15/50D03D15/533D03D15/54
Inventor 尹立新邵义伟杨超明
Owner JIANGSU HENGLI CHEM FIBER
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