Polyester industrial yarn for industrial sewing thread and preparation method thereof
A polyester industrial yarn and sewing thread technology, applied in the field of modified polyester fiber, can solve the problems of monotonous color of polyester textiles, difficult dye molecules, low dyeing rate, etc., to shorten the dyeing time, lower the dyeing temperature, and reduce energy consumption. consumption effect
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Embodiment 1
[0076] The preparation method of the polyester industrial yarn used for industrial sewing thread, the steps are as follows:
[0077] (1) prepare modified polyester;
[0078] (1.1) Preparation of doped modified Sb 2 o 3 Powder;
[0079] (1.1.1) Mg(NO 3 ) 2 aqueous solution with a concentration of 8 mol% Sb 2 o 3 The solution is mixed evenly, Sb 2 o 3 The solvent of the solution is oxalic acid, the Mg in the mixture 2+ with Sb 3+ The molar ratio is 2:100;
[0080] (1.1.2) Add dropwise ammonia water with a concentration of 2 mol / L until the pH of the mixed solution is 9 to obtain a precipitated product, then wash and dry the precipitated product at a temperature of 105°C for 2.5 hours;
[0081] (1.1.3) The dried product is firstly heated to 400°C and then kept for 2.5 hours, then heated to 900°C and kept for 1.5h, and finally cooled in air and pulverized to obtain a doped modified product with an average particle size of 0.4 microns. Sb 2 o 3 Powder;
[0082] (1.2)...
Embodiment 2
[0099] The preparation method of the polyester industrial yarn used for industrial sewing thread, the steps are as follows:
[0100] (1) prepare modified polyester;
[0101] (1.1) Preparation of 3-trimethylsilyl-3-methyl-1,2-propanediol;
[0102] (a) Mix 3-trimethylsilyl-3-methylpropene, peracetic acid and dichloromethane at a molar ratio of 1:5:10, and react at a temperature of 35°C for 5 hours, with stirring during the reaction. After the end, the solvent is removed, and trimethylsilylpropylene epoxide is obtained through purification and refining;
[0103] (b) Mix water, concentrated sulfuric acid and trimethylsilyl propylene epoxide, heat it in a water bath to 80°C under stirring conditions, keep it warm for 10 minutes, cool to room temperature after the reaction, and obtain the following formula after neutralization, distillation, separation and purification The dihydric alcohol of band trimethylsilyl side group shown in formula (I), R in formula (I) is-CH(CH 3 )-, con...
Embodiment 3
[0121] The preparation method of the polyester industrial yarn used for industrial sewing thread, the steps are as follows:
[0122] (1) prepare modified polyester;
[0123] (1.1) Preparation of 3-trimethylsilyl-3-methyl-1,2-propanediol;
[0124] (a) Mix 3-trimethylsilyl-3-methylpropene, peracetic acid and dichloromethane at a molar ratio of 1:10:15, and react at a temperature of 40°C for 8 hours with stirring during the reaction. After the end, the solvent is removed, and trimethylsilylpropylene epoxide is obtained through purification and refining;
[0125](b) Mix water, concentrated sulfuric acid and trimethylsilyl propylene epoxide, heat it in a water bath to 85°C under stirring conditions, keep it warm for 15 minutes, cool to room temperature after the reaction, and obtain the following formula after neutralization, distillation, separation and purification: The dihydric alcohol of band trimethylsilyl side group shown in formula (I), R in formula (I) is-CH(CH 3 )-, con...
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