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Glossy black polyester filament and preparation method thereof

A polyester filament, black technology, applied in the field of polyester fiber, can solve the problems of slow degradation rate and poor degradation effect, and achieve the effects of decreasing intrinsic viscosity, low cost and increasing hydrolysis rate

Active Publication Date: 2020-10-16
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 slow degradation rate and poor degradation effect of polyester fiber (polyester filament) in the prior art, and provide a kind of bright black polyester filament with high degradation rate and good degradation effect and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A preparation method of glossy black polyester filament, the steps are as follows:

[0052] (1) Preparation of solid heteropolyacid powder SiO 2 -TiO 2 ;

[0053] In parts by weight, first, stir and disperse 1 part of silica powder and 55 parts of water, add 2 parts of titanyl sulfate solution with a concentration of 4.5wt% dropwise, and then use a concentration of 1.0mol / L sodium hydroxide Adjust the pH value of the solution to neutrality, then adjust the pH value to 8 with sulfuric acid with a concentration of 10wt%, after aging for 2h, wash with deionized water until there is no SO 4 2- After suction filtration, the filter cake was washed with absolute ethanol several times, and then dried in a drying oven at a temperature of 100°C. Finally, the samples were calcined at 500°C for 2 hours and then pulverized to obtain a particle with an average particle size of 0.4 microns. Solid heteropoly acid SiO 2 -TiO 2 Powder, SiO 2 -TiO 2 Medium TiO 2 The content of is...

Embodiment 2

[0065] A preparation method of glossy black polyester filament, the steps are as follows:

[0066] (1) Preparation of solid heteropolyacid powder SiO 2 -ZrO 2 ;

[0067] In parts by weight, first, stir and disperse 1 part of silica powder and 58 parts of water, add 2 parts of zirconium sulfate solution with a concentration of 5wt% dropwise, and then use a sodium hydroxide solution with a concentration of 1.0mol / L Adjust the pH value to neutral, then adjust the pH value to 8 with a concentration of 10 wt% sulfuric acid, after aging for 1h, wash with deionized water until no SO 4 2- After suction filtration, the filter cake was washed with absolute ethanol several times, and then placed in a drying oven to dry at 100°C. Finally, the samples were calcined at 400°C for 4 hours and then pulverized to obtain an average particle size of 0.45 microns. solid heteropolyacid SiO 2 -ZrO 2 Powder, SiO 2 -ZrO 2 Medium ZrO 2 The content of is 45wt%;

[0068] (2) Esterification reac...

Embodiment 3

[0077] A preparation method of glossy black polyester filament, the steps are as follows:

[0078] (1) Preparation of solid heteropolyacid powder B 2 o 3 -Al 2 o 3 ;

[0079] In parts by weight, at first, 2.5 parts of concentration are added dropwise to 1 part of boric acid as a 4wt% aluminum sulfate solution, and then the sodium hydroxide solution with a concentration of 1.0mol / L is used to adjust the pH value to neutrality, and then use a concentration of 9wt% sulfuric acid to adjust the pH value to 8, after aging for 1.5h, wash with deionized water until no SO 4 2- After suction filtration, the filter cake was washed with absolute ethanol several times, and then dried in a drying oven at 100°C. Finally, the samples were calcined at 700°C for 2 hours and then pulverized to obtain solid heteropolyacid B 2 o 3 -Al 2 o 3 Powder, B 2 o 3 -Al 2 o 3 Middle Al 2 o 3 The content of each is 30wt%;

[0080] (2) Esterification reaction;

[0081] Make a slurry of tereph...

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Abstract

The invention relates to a bright black polyester filament and a preparation method thereof. The preparation method comprises the following steps: preparing the bright black polyester filament by adopting a method for adding color master batches into polyester melt and a linear special-shaped orifice spinneret plate according to an FDY process. The prepared bright black polyester filament is a polyester FDY filament of which the cross section is linear. Black dyes and solid heteropolyacid powder subjected to high-temperature roasting are dispersed in the polyester, the high-temperature roasting temperature is 400-700 DEG C, and the solid heteropolyacid is more than one of SiO2-TiO2, SiO2-ZrO2, B2O3-Al2O3, TiO2-ZnO and SiO2-CaO. The preparation method is simple, and the hydrolysis rate of the polyester is improved by adding the solid heteropolyacid into the preparative raw materials of the polyester; and the prepared product is excellent in mechanical property, and after the placed under the conditions that the temperature is 25 DEG C and the relative humidity of 65% for 60 months, the intrinsic viscosity of the product is reduced by 10-15%.

Description

technical field [0001] The invention belongs to the field of polyester fibers, and relates to a glossy black polyester filament and a preparation method thereof. Background technique [0002] Polyester (polyethylene terephthalate, PET) is the world's largest synthetic fiber material, widely used in fiber, textile fabrics, clothing, polyester bottles, films and sheets and other products. With the rapid development of the PET industry, although PET will not directly cause harm to the environment, PET waste has become a global environmental polluting organic matter due to the huge number of waste products after use and its strong resistance to atmospheric and microbial reagents. . [0003] The annual production of polyester fiber in my country exceeds 40 million tons. Colored yarn plays an important role in polyester fiber. The production of colored yarn can reduce pollution caused by dyeing and greatly reduce the production cost of fabrics. About 20% of the total output of po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/06D01F1/10D01D5/253
CPCD01D5/253D01F1/06D01F1/10D01F6/92
Inventor 尹立新陈明张元华
Owner JIANGSU HENGLI CHEM FIBER
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