Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of colored synthetic fiber and its preparation method

A synthetic fiber and colored technology, applied in the field of pigments, can solve the problems of affecting the performance of polymer products, uneven dispersion, residues, etc.

Active Publication Date: 2021-09-10
GUANGDONG YCX PRECISION MFG CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, further studies have shown that due to the one-time mixing of the reactants of the synthetic pigment with the polymer, the processing time through extrusion and kneading equipment is limited and very short, which may cause uneven dispersion and incomplete reaction of the reactants in the molten polymer, resulting in In the final colored polymer, large reactant particles remain in the polymer, which affects the performance of the polymer product

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of colored synthetic fiber and its preparation method
  • A kind of colored synthetic fiber and its preparation method
  • A kind of colored synthetic fiber and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Vat Red 74

[0058] In this embodiment, such as process figure 1 As shown, the colored polyester fiber is produced by successively adding materials, and the steps are as follows:

[0059] 1) mixing and extruding 1 wt% naphthalic dianhydride and polyester;

[0060] 2) Mix the obtained particles with o-phenylenediamine (the molar ratio to naphthalene tetranic dianhydride is 1:1), and extrude the melt under vacuum with a microwave power of 300 watts;

[0061] 3) Direct spinning of the melt to obtain vat red 74 colored polyester fibers.

Embodiment 2

[0063] Solvent Red 179

[0064] In this embodiment, such as process figure 2 As shown, the parallel feeding process is used to produce colored polyester fibers, and the steps are as follows:

[0065] 1) Divide the polyester into two, mix 2wt% of naphthalene dioic anhydride with one part of the polyester and add it to one layer of extrusion section, and simultaneously add 1,8-naphthalene diamine (the molar ratio to naphthalene dioic anhydride is 1 : 1) mixed with another part of polyester and added to the two-layer extrusion section, the one-layer and two-layer extrusion sections use a screw speed of 50 rpm, an operating temperature of 275°C, and extrude the melt;

[0066] 2) The melts of the first and second layers converge and enter the reaction section, with a microwave power of 350 watts and a screw speed of 100 rpm, to extrude the melt;

[0067] 3) Directly spinning the melt to obtain polyester fibers colored with solvent red 179.

Embodiment 3

[0069] Solvent Red 135

[0070] In this embodiment, such as process figure 2 As shown, the parallel feeding process is used to produce colored polyester fibers, and the steps are as follows:

[0071] 1) Divide the polyester into two, mix 2wt% tetrachlorophthalic anhydride with one part of the polyester and add one layer of extrusion section, and simultaneously mix 1,8-naphthalene diamine (with the mole of naphthalene dioic anhydride The ratio is 1:1) mixed with another part of polyester and added to the second-layer extrusion section. The first-layer and second-layer extrusion sections use a screw speed of 50 rpm and a working temperature of 275°C to extrude the melt;

[0072] 2) The melts of the first and second layers converge and enter the reaction section, with a microwave power of 350 watts and a screw speed of 100 rpm, to extrude the melt;

[0073] 3) Direct spinning of the melt to obtain polyester fibers colored with solvent red 135.

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a colored synthetic fiber and a preparation method thereof. The acid anhydride-functionalized benzene or naphthalene derivatives are mixed and melt-extruded with polymers, and the resulting extrusion mixture, ortho-diamine compounds and catalysts are mixed and melted again, during which the compounds react to form colorants, and the colored polymers are obtained by melt spinning colored fibers; or, mixing anhydride-functionalized benzene or naphthalene derivatives with polymers to obtain a first mixed melt, and simultaneously mixing an o-diamine compound, a catalyst, and the same polymer to obtain a second mixed melt, and mixing the second The first and second mixtures are melt-mixed to react to form a colorant, and the colored polymer melt is spun to obtain colored synthetic fibers. The invention combines colorant synthesis, polymer processing and spinning, avoids the use of colorant grinding and color masterbatch, and realizes online synthesis of colorants to color polymer melts and evenly disperse them in polymers at the molecular level. Achieve high-efficiency production of high-quality colored synthetic fibers.

Description

technical field [0001] The invention relates to the technical field of pigments, in particular to an online and in-situ reaction colored synthetic fiber and a preparation method thereof. Background technique [0002] Polyester fiber has the advantages of wrinkle resistance, wear resistance, easy washing and drying, and good hand feeling, and is widely used in the textile field. However, the molecular structure of polyester fibers does not contain hydrophilic groups, and has high crystallinity and poor hygroscopicity, so it is difficult to dye them. Usually polyester fibers are dyed with disperse dyes, and overflow dyeing equipment is used under high temperature and high pressure. This method requires high equipment, high energy consumption and low efficiency, serious pollution, safety risks, high dyeing costs, and fiber color fastness. And weather resistance is also poor. [0003] With people's increasing awareness of environmental protection and safety, and the developmen...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): D01F1/06D01F6/92
CPCD01F1/06D01F6/92
Inventor 魏文山李辰
Owner GUANGDONG YCX PRECISION MFG CO LTD