Colored polyester sling and preparation method thereof

Abstract

The invention relates to a colored polyester sling and a preparation method thereof. The preparation method comprises: plying modified polyester industrial yarns, dyeing, antistatic finishing, anti-ultraviolet finishing, weaving, core threading and sewing to obtain a colored polyester sling ;Modified polyester industrial yarn is made by solid-phase polycondensation, melting, metering, extrusion, cooling, oiling, stretching, heat setting and winding of modified polyester melt; solid-phase polycondensation The preparation method of the modified polyester before thickening is as follows: mix terephthalic acid, ethylene glycol, diol with trimethylsilyl side group and hexanediol with tert-butyl side group evenly and carry out esterification successively and polycondensation reactions. The dye uptake rate of the modified polyester industrial yarn is 87.6-93.2% at a temperature of 130°C. The UV‑A transmittance of colored polyester slings is 1.7-3.0%. The preparation method of the invention has simple process and low cost; the prepared product has high dyeing performance and 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...

Examples

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) ...

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...

Examples

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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