Colored polyarylester and preparation method thereof

A polyarylate fiber and polyarylate technology are applied in the field of colored polyarylate fibers and their preparation, which can solve the problems of inability to dye polyarylate fibers, achieve good appearance effect, high color fastness, and solve the problem of single color. Effect

Pending Publication Date: 2019-08-30
上海舟汉纤维材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that polyarylate fibers cannot be dyed in the prior art, the purpose of this invention is to provide a kind of colored polyarylate fibers and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] A kind of preparation method of colored polyarylate fiber, comprises the steps:

[0021] S1, adding the organic pigment into the dispersion medium mixed with a stabilizer, and mixing evenly to obtain a colored slurry;

[0022] S2, input the colored slurry in S1 into the melted polyarylate, mix, filter, and spin to prepare colored polyarylate fibers.

[0023] The above-mentioned colored paste contains organic pigments with good compatibility with polyarylate and good thermal stability. The organic pigment is a macromolecular organic pigment that can be uniformly dispersed in the polymerization system to color the polyarylate, thereby A colored polyarylate fiber in which the pigment is uniformly dispersed is obtained. Adding stabilizers to organic pigments can greatly improve the high-temperature thermal stability of organic pigments, and the temperature resistance can reach 320°C; at the same time, the residence time of colored melts is reduced to ensure that the pigmen...

Embodiment 1

[0032] A kind of preparation method of colored polyarylate fiber:

[0033] S1, take 25g stabilizer and add in 580g dispersion medium, mix well;

[0034] S2, taking 250g of organic pigments and adding them into the dispersion medium mixed with stabilizers, and mixing evenly to obtain colored paste;

[0035] S3, taking 50 kg of polyarylate slices to be melted by a single-screw extruder, and transported to the twin-screw extruder by a booster pump. The ester melt is fully mixed, and after mixing evenly, the booster pump pressurizes and transports it to the melt filter, and after filtering, it is spun to obtain colored polyarylate fibers.

[0036] Among them, the organic pigment is pigment red 176, the stabilizer is tributyl phosphate, and the dispersant is polyethylene low molecular weight wax.

[0037] Through testing, the strength of the polyarylate fiber is 8.9CN / dtex, the elongation is 2%, and the color fastness to light is >4 grade.

Embodiment 2

[0039] A kind of preparation method of colored polyarylate fiber:

[0040] S1, take 30g stabilizer and add in 650g dispersion medium, mix well;

[0041] S2, taking 375g of organic pigments and adding them into the dispersion medium mixed with a stabilizer, and mixing evenly to obtain a colored slurry;

[0042] S3, taking 50 kg of polyarylate slices to be melted by a single-screw extruder, and transported to the twin-screw extruder by a booster pump. The ester melt is fully mixed, and after mixing evenly, the booster pump pressurizes and transports it to the melt filter, and after filtering, it is spun to obtain colored polyarylate fibers.

[0043] Among them, the organic pigment is pigment red 254, the stabilizer is tributyl phosphate, and the dispersant is polyethylene low molecular wax.

[0044] Through testing, the strength of the polyarylate fiber is 8.7CN / dtex, the elongation is 2%, and the color fastness to light is >4 grade.

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Abstract

The invention discloses colored polyarylester and a preparation method thereof. The method comprises the following steps that S1, organic pigment is added into a dispersion medium mixed with a stabilizer to be uniform to obtain colored slurry; S2, the colored slurry in S1 is input into fused polyarylester, and mixing, filtering and spinning are performed to obtain the colored polyarylester; according to the preparation method of the colored polyarylester, the problem that polyarylester has single color and cannot be dyed easily is effectively solved, and the fiber application field is expanded. The colored polyarylester is obtained in the mode of dyeing and spinning in success, the dye is evenly distributed inside a polymer, the color fastness is high, the color luster is uniform, and theappearance effect is good; the colored polyarylester has no color difference between batches and inside batches, and the polyarylester is suitable for large-batch continuous production.

Description

technical field [0001] The invention relates to the technical field of synthetic fibers, in particular to a colored polyarylate fiber and a preparation method thereof. Background technique [0002] Polyarylate is a new class of thermotropic liquid crystal polymers that emerged after solute liquid crystal polyamides in the mid-1970s. After the polyarylate is dried, it is heated and melted. When the anisotropic liquid crystal polyarylate flows through the spinneret hole, due to the strong shear force, the aromatic macromolecular segment of the polyarylate main chain undergoes a two-dimensional orientation. The high two-dimensional orientation structure of the fiber can be well maintained after leaving the spinneret hole, and the original filament directly has a relatively stable two-dimensional orientation structure without post-drawing or low-power drafting. The further polycondensation between the arylate molecular chains and the further increase in the regularity and cryst...

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): D01F6/92D01F1/10
CPCD01F1/10D01F6/92
Inventor 周文奎程龙张玉东
Owner 上海舟汉纤维材料科技股份有限公司
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