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Solid heteropoly acid-containing modified POY (Polyester) fibre and preparation method thereof

A technology of solid heteropolyacid and modified polyester, which is applied in the direction of fiber chemical characteristics, single-component polyester rayon, rayon manufacturing, etc., and can solve the problems that are also relatively large, unfavorable for polyester environmental protection production, antimony system Problems such as large amount of catalyst added to achieve the effect of improving activity

Active Publication Date: 2019-04-23
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Antimony-based catalysts currently on the market such as Sb 2 o 3 The amount added in the polyester synthesis process is relatively large, and metal antimony will cause harm to humans and nature, and the large amount of antimony-based catalysts will also have a greater impact on the environment, which is not conducive to the environmental protection production of polyester

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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  • Solid heteropoly acid-containing modified POY (Polyester) fibre and preparation method thereof
  • Solid heteropoly acid-containing modified POY (Polyester) fibre and preparation method thereof
  • Solid heteropoly acid-containing modified POY (Polyester) fibre and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] A kind of preparation method of the modified polyester POY fiber containing solid heteropolyacid, the steps are as follows:

[0081] (1) prepare modified polyester;

[0082] (1.1) Synthesis of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, the method is: after mixing palladium acetate and dimethyl di-tert-butylethylene, add mass concentration It is 10% hydrogen peroxide solution, reacted at 72°C for 3 hours, cooled, crystallized and refined to obtain 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, wherein The mass ratio of dimethyldi-tert-butylethylene, hydrogen peroxide solution and palladium acetate is 1:2.0:0.015, and the structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as follows Shown in formula (I);

[0083] (1.2) Preparation of doped modified Sb 2 o 3 ;

[0084] (1.2.1) 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...

Embodiment 2

[0101] A kind of preparation method of the modified polyester POY fiber containing solid heteropolyacid, the steps are as follows:

[0102] (1) prepare modified polyester;

[0103] (1.1) Synthesis of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, the method is: after mixing palladium acetate and dimethyl di-tert-butylethylene, add mass concentration It is 11% hydrogen peroxide solution, reacted at 70°C for 4 hours, cooled, crystallized and refined to obtain 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, wherein The mass ratio of dimethyldi-tert-butylethylene, hydrogen peroxide solution and palladium acetate is 1:1.8:0.015, and the structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as follows Shown in formula (I);

[0104] (1.2) Preparation of doped modified Sb 2 o 3 ;

[0105] (1.2.1) Ca(NO 3 ) 2 Aqueous solution with a concentration of 5 mol% Sb 2 o 3 The solution is mixed evenly, Sb 2 o 3 The solvent of the solution is oxalic acid, the Ca in the mixture 2+ with Sb 3...

Embodiment 3

[0117] A kind of preparation method of the modified polyester POY fiber containing solid heteropolyacid, the steps are as follows:

[0118] (1) prepare modified polyester;

[0119] (1.1) Synthesis of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, the method is: after mixing palladium acetate and dimethyl di-tert-butylethylene, add mass concentration It is 12% hydrogen peroxide solution, reacted at 74°C for 4 hours, cooled, crystallized and refined to obtain 2,2,3,4,5,5-hexamethyl-3,4-hexanediol, wherein The mass ratio of dimethyldi-tert-butylethylene, hydrogen peroxide solution and palladium acetate is 1:1.6:0.015, and the structural formula of 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as follows Shown in formula (I);

[0120] (1.2) Preparation of doped modified Sb 2 o 3 ;

[0121] (1.2.1) Ba(NO 3 ) 2 Aqueous solution with a concentration of 10 mol% Sb 2 o 3 The solution is mixed evenly, Sb 2 o 3 The solvent of the solution is oxalic acid, Ba in the mixture 2+ with Sb 3+ T...

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Abstract

The invention relates to a solid heteropoly acid-containing modified POY (Polyester) fibre and a preparation method thereof. The preparation method comprises the following steps of: measuring modifiedpolyester melt, extruding the measured modified polyester melt through a spinneret plate, cooling, applying oil and winding to obtain the solid heteropoly acid-containing modified POY fibre; the molecular chain of the modified polyester comprises a terephthalic acid chain segment, an ethylene glycol chain segment, and a 2,2,3,4,5,5-hexamethyl-3,4-hexanediol chain segment; the structural formula of the 2,2,3,4,5,5-hexamethyl-3,4-hexanediol is as shown in the description; and solid heteropoly acid powder which is roasted at a high temperature and doped modified Sb2O3 powder are dispersed in themodified polyester. After the prepared product is placed for 60 months at the temperature of 25 DEG C and the relative humidity of 65 percent, the intrinsic viscosity is reduced by 12 to 18 percent.The preparation method provided by the invention is low in cost and simple in process; and the prepared product is high in natural degradation rate, and has a great application prospect.

Description

technical field [0001] The invention belongs to the technical field of modified fibers, and relates to a modified polyester POY fiber containing solid heteropolyacid and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) fiber has a history of 60 years since its industrialization in the 1950s. Due to its excellent properties such as high strength, heat resistance, abrasion resistance and washability It has been developed rapidly and is an ideal textile fiber. Its production scale has been continuously expanded, and it has become the largest variety of synthetic fibers. [0003] With the development of organic synthesis and polymer science, a variety of polyester fibers with different functions have been developed in recent years. For example: polybutylene terephthalate (PBT) with high elasticity, polytrimethylene terephthalate (PTT), fully aromatic polyester with ultra-high strength and high modulus, etc. The so-called "polyester f...

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): D01F6/92D01F1/10C08G63/183C08G63/78
CPCC08G63/183C08G63/78D01F1/10D01F6/92
Inventor 张元华陈瑞王丽丽
Owner JIANGSU HENGLI CHEM FIBER
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