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Polyester fabric capable of acidic dyeing and method for making same

A polyester fiber, acid dyeing technology, applied in the field of polyester spinning process, can solve the problems of not fully meeting the requirements of taking, poor mechanical properties of polyester fiber, high viscosity of the blending system, etc., and achieves good acid dyeability. The effect of improving the compatibility, improving the mechanical properties

Inactive Publication Date: 2005-06-29
上海丝绸集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Since the above two patents all use polyamide salts containing bis-(hexamethylene)triamine, the viscosity of the obtained blend system is relatively high, and the compatibility problem between polyester and polyamide cannot be solved, so It is not easy to spin and form, so that the mechanical properties of the final acid-dyed polyester fiber are poor, and cannot fully meet the requirements of taking

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1) Place 2000g of polytrimethylene terephthalate (PTT), 400g of polyamide 66, and 100g of polyethylene-methacrylate in a vacuum oven (vacuum degree lower than -0.1MPa) to dry, and all three polymers until the water content of the product reaches less than 100ppm. Among them, the drying conditions of polyester and polyamide are: temperature 120°C, drying time 24 hours; the drying conditions of polyethylene-methacrylate are: temperature 80°C, drying time 10 hours.

[0019] 2) Mix 1640g, 300g, and 60g of polytrimethylene terephthalate (PTT), polyamide 66, and polyethylene-methacrylate for a total of 2000g. After stirring and premixing, use a twin-screw For melt blending extrusion granulation, the heating temperature of each zone of the twin-screw is set to 240°C in the first zone, 250°C in the second zone, 260°C in the third zone, and 250°C in the fourth zone. The filaments extruded from the outlet of the screw were condensed in a water tank and pelletized to obtain 1800 ...

Embodiment 2

[0031] 1) Place 2500g of polytrimethylene terephthalate (PTT), 800g of polyamide 66, and 150g of polyethylene-methacrylate in a vacuum oven (vacuum degree lower than -0.1MPa) to dry, and all three polymers until the water content of the product reaches less than 100ppm. Among them, the drying conditions of polyester and polyamide are: temperature 100°C, drying time 24 hours; the drying conditions of polyethylene-methacrylate are: temperature 100°C, drying time 8 hours.

[0032] 2) Polytrimethylene terephthalate (PTT), polyamide 66 and polyethylene-methacrylate were 2280g, 600g, and 120g respectively, and mixed with a total of 3000g. After stirring and premixing, use double Screw melt blending extrusion granulation, the heating temperature of each twin-screw zone is set to 235°C in the first zone, 245°C in the second zone, 255°C in the third zone, and 245°C in the fourth zone. The filaments extruded from the outlet of the screw were condensed in a water tank and pelletized to ...

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PUM

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Abstract

The invention relates to an acid dyeable polyester fiber and a preparation method thereof. Combining polyamide and polyethylene-methacrylate to form polyester acid-dyeable composite additives, adding them to polyester compounds, and blending and spinning to obtain acid-dyeable polyester fibers. Due to the addition of the composite additive, especially the introduction of polyethylene-methacrylate, the compatibility of polyester and polyamide has been improved, and the polyester fiber has better acid dyeability and good mechanical properties. .

Description

technical field [0001] The invention relates to an acid-dyeable polyester fiber and a preparation method thereof, especially for use in the polyester spinning process. Background technique [0002] Polyester is a linear macromolecular compound formed by esterification and polycondensation of diols and dibasic acids. It not only has high strength, high modulus, excellent light resistance and chemical corrosion resistance, but also has good mechanical properties and dimensional stability in both dry and wet states. Therefore, polyester fiber is one of the most widely used textile materials. [0003] However, due to the special chemical composition and structure of polyester, it is difficult to dye, and the dye is not easy to fix inside the fiber. Therefore, only disperse dyes with small particles can be used for dyeing under high temperature and high pressure conditions. The color and style of the obtained fabrics are affected. limit. When the blended fabric of polyester, w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D06P1/39
Inventor 李文刚李一东汪奇
Owner 上海丝绸集团股份有限公司
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