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Modified polyester for labor protection fabric

A modified and polyester technology, applied in the field of modified polyester, can solve problems such as deficiencies, and achieve the effects of improving heat resistance, excellent water resistance, and good flame retardancy

Inactive Publication Date: 2020-04-21
刘大刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fabric woven from ordinary polyester filament has the advantages of good strength, easy washing and quick drying, etc., but it is not enough to be used as a labor protection fabric. For example, in a high-temperature steam environment, the protective fabric is required to not only have high temperature resistance , it is also required to have a waterproof function; for chefs, the fabric not only needs to be waterproof, but also has a flame-retardant function

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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  • Modified polyester for labor protection fabric
  • Modified polyester for labor protection fabric
  • Modified polyester for labor protection fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] see figure 1 Shown, the preparation method of dicarboxylic acid modifier specifically comprises the following steps:

[0030] S1, the preparation of raw material A

[0031] First, 1.3mol phosphorus trichloride and 1.5g catalyst (ZnCl 2 :AlCl 3 =3:1) into the reactor, heated to 80°C while stirring, 1mol magnolol A1 was divided into 5 times and added to the reactor, the adding interval was 30min, after the addition was completed, the stirring reaction was continued for 1h to obtain the raw material For intermediate A2, continue to heat up to 185°C, stir and react for 2 hours, and absorb the hydrogen chloride gas generated by the reaction with 30% sodium hydroxide lye. After the reaction is completed, the raw material intermediate A3 is obtained, cool down to 80°C, and add 45ml of deionized Water, heated to 105°C for hydrolysis reaction for 1 hour, after the reaction, lowered to room temperature, extracted with xylene, and removed the extractant xylene by rotary evapora...

Embodiment 2

[0036] A modified polyester used for labor protection fabrics, which is obtained from the modified polyester through melt spinning, weaving, printing, heat setting, curling seam, washing, napping and setting;

[0037] The preparation method of the described modified polyester specifically comprises the following steps: adding 1 mol of terephthalic acid, 0.07 mol of dicarboxylic acid modifier, and 1.1 mol of ethylene glycol into the reactor, and then adding 0.001 mol of catalyst titanic acid For tetrabutyl ester, replace the air in the reaction kettle with nitrogen, adopt the direct esterification method, raise the temperature to 220°C for 2 hours while stirring, then raise the temperature to 250°C, slowly vacuumize and carry out the polymerization reaction for 3 hours, and cool naturally After reaching room temperature, the modified polyester is obtained by vacuum drying.

[0038] The infrared characterization of modified polyester is as follows: IR(KBr): 3024 / 3008 (stretch ...

Embodiment 3

[0040] A modified polyester used for labor protection fabrics, which is obtained from the modified polyester through melt spinning, weaving, printing, heat setting, curling seam, washing, napping and setting;

[0041] The preparation method of the described modified polyester specifically comprises the following steps: adding 1 mol of terephthalic acid, 0.1 mol of dicarboxylic acid modifier, and 1.2 mol of ethylene glycol into the reactor, and then adding 0.001 mol of catalyst titanic acid For tetrabutyl ester, replace the air in the reaction kettle with nitrogen, adopt the direct esterification method, raise the temperature to 225°C while stirring for 2 hours, then raise the temperature to 260°C, slowly vacuumize and carry out the polymerization reaction for 3 hours, and cool naturally After reaching room temperature, the modified polyester is obtained by vacuum drying.

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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PUM

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Abstract

The invention discloses modified polyester for a labor protection fabric. The modified polyester is obtained by carrying out melt spinning, weaving, printing, heat setting, curling and jointing, waterwashing, and drawing and shaping, wherein the modified polyester is prepared from terephthalic acid, a dicarboxylic acid modifier and ethylene glycol through esterification and polycondensation; thepreparation of the dicarboxylic acid modifier comprises the following steps of firstly, preparing a raw material A, and obtaining a starting material magnolol A1 through an esterification reaction, anacylation reaction, a hydrolysis reaction and a dehydration ring closing reaction; next, under the catalysis of a metal platinum catalyst PtCl2 (PPh3)2, enabling the raw material A and bis-trimethylsiloxymethyl silane to be subjected to a silicon hydrogen addition reaction to obtain a compound B without needing purification, directly adding acrylic acid into a crude reaction liquid containing the compound B, enabling P-H and lefin on acrylic acid to be subjected to addition reaction at a high temperature, and finally carrying out purification to obtain the dicarboxylic acid modifier. The prepared modified polyester can be used for whole body protection or local protection during operation under dangerous conditions, and is extremely high in practicability.

Description

technical field [0001] The invention belongs to the technical field of fabrics, and in particular relates to a modified polyester used for labor protection fabrics. Background technique [0002] Textiles are the main cause of fire or the spread of fire, so the development of textile fabrics with fire and flame retardant properties is of great significance for fire prevention and rescue. However, most of the currently developed flame-retardant textile fabrics are used for special operations, and the flame-retardant effect is mainly achieved by adding flame retardants to the fabrics. However, the addition of flame retardants will affect the feel of textile fabrics, making such fabrics Flame-retardant textile fabrics for special operations are not only expensive, but also lack comfort. They are difficult to be used in people's daily clothing and are not universal. [0003] The basic composition of polyester is polyethylene terephthalate, molecular formula HO-H 2 C-H 2 C-O[-O...

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): D01F6/84D01F1/07C08G63/78C08G63/695
CPCD01F6/84D01F1/07C08G63/78C08G63/6956
Inventor 刘大刚江四胜李苗苗童爱霞
Owner 刘大刚