Preparation method of breathable and moisture transferring fabric

Abstract

The invention discloses a preparation method of breathable and moisture transferring fabric. The preparation method specifically comprises the following steps: S1, ensuring that amino acid 1 and phthalic anhydride 2 are subjected to amino protection reaction, so as to obtain protected amino acid with a structure as shown in a formula 3; S2, feeding terephthalic acid 4, the protected amino acid 3,glycol 5 and catalyst aluminum acetate into a stainless steel reaction kettle, and performing esterification, so as to obtain a low polymer 7; S3, performing secondary temperature rise after esterification pre-condensation polymerization in the step S2, and continuing condensation reaction, so as to obtain a high polymer 8; S4, putting the high polymer 8 into an acid solution, and performing deprotection reaction, namely removing protecting groups, so as to obtain modified terylene polyester 9; S5, feeding the modified terylene polyester 9, a dispersant, a defoamer and a softening agent into ascrew extruder, performing fused extruding, and then performing melt filtering, liquid phase viscosity increasing, spinneret orifice extruding to form trickles, lateral blowing air cooling, thread line fatliquoring, winding to form terylene high-strength filaments, dyeing and finishing and spinning, so as to obtain the breathable and moisture transferring fabric.

Description

technical field

[0001] The invention belongs to the technical field of fabrics, and in particular relates to a preparation method of breathable and moisture-conducting fabrics. Background technique

[0002] With the improvement of living standards and the development of science and technology, consumers have higher and higher requirements for clothing. They require comfortable clothing, bright colors and a sense of returning to nature. Natural fiber itself has many advantages, such as strong hygroscopicity of cotton fiber, easy dyeing, comfortable wearing, good alkali resistance, acid resistance and heat resistance, etc., but at the same time, it also has disadvantages. Because cotton fiber contains more hydrophilic groups, it has excellent water absorption capacity. , the water retention capacity is strong, which makes the human body feel uncomfortable, especially when the human body sweats a lot, the cotton fiber will swell after absorbing water, the air permeability will ...

Examples

Embodiment 1

[0044] A method for preparing a breathable and moisture-conducting fabric, specifically comprising the following steps:

[0045] S1, protection reaction of amino group

[0046] Add 200 mol of amino acid 1 and 400 mol of phthalic anhydride 2 into the reaction flask, add the solvent methylene chloride, heat to reflux for 1.5 hours, and remove the solvent by rotary evaporation after the reaction, to obtain the protected amino acid with the structure of formula 3, The yield is 96%; wherein, x in amino acid 1 is 1, and amino acid 1 is aspartic acid;

[0047]

[0048] S2, Esterification precondensation

[0049] Add 100mol of terephthalic acid 4, 100mol of protected amino acid 3, 400mol of ethylene glycol 5 and 0.4mol of catalyst aluminum acetate into a stainless steel reaction kettle, pass through nitrogen protection, and heat up to 210°C under a pressure of 0.2MPa to carry out esterification. , the oligomer 7 was obtained;

[0050]

[0051] S3, polycondensation reaction

[...

Embodiment 2

[0062] A method for preparing a breathable and moisture-conducting fabric, specifically comprising the following steps:

[0063] S1, protection reaction of amino group

[0064] Add 200 mol of amino acid 1 and 300 mol of phthalic anhydride 2 into the reaction flask, add the solvent methylene chloride, heat to reflux for 2 hours, and remove the solvent by rotary evaporation after the reaction, to obtain the protected amino acid with the structure of formula 3. The rate is 98%; wherein, x in amino acid 1 is 2, and amino acid 1 is glutamic acid;

[0065]

[0066] S2, Esterification precondensation

[0067]

[0068] Add 70 mol of terephthalic acid 4, 30 mol of protected amino acid 3, 180 mol of ethylene glycol 5 and 0.3 mol of catalyst aluminum acetate into a stainless steel reaction kettle, pass through nitrogen protection, and heat up to 225°C under a pressure of 0.2 MPa to perform esterification. , the oligomer 7 was obtained;

[0069] S3, polycondensation reaction

[...

Embodiment 3

[0080] A method for preparing a breathable and moisture-conducting fabric, specifically comprising the following steps:

[0081] S1, protection reaction of amino group

[0082] Add 200 mol of amino acid 1 and 440 mol of phthalic anhydride 2 into the reaction flask, add the solvent dichloromethane, heat to reflux for 2 hours, and remove the solvent by rotary evaporation after the reaction to obtain the protected amino acid with the structure of formula 3. The rate is 97%; wherein, x in amino acid 1 is 1, and amino acid 1 is aspartic acid;

[0083]

[0084] S2, Esterification precondensation

[0085] Add 60 mol of terephthalic acid 4, 40 mol of protected amino acid 3, 200 mol of ethylene glycol 5 and 0.25 mol of catalyst aluminum acetate into a stainless steel reaction kettle, pass in nitrogen protection, and under a pressure of 0.2 MPa, heat up to 220°C for esterification , the oligomer 7 was obtained;

[0086]

[0087] S3, polycondensation reaction

[0088] After the...

technical field

[0001] The invention belongs to the technical field of fabrics, and in particular relates to a preparation method of breathable and moisture-conducting fabrics. Background technique

[0002] With the improvement of living standards and the development of science and technology, consumers have higher and higher requirements for clothing. They require comfortable clothing, bright colors and a sense of returning to nature. Natural fiber itself has many advantages, such as strong hygroscopicity of cotton fiber, easy dyeing, comfortable wearing, good alkali resistance, acid resistance and heat resistance, etc., but at the same time, it also has disadvantages. Because cotton fiber contains more hydrophilic groups, it has excellent water absorption capacity. , the water retention capacity is strong, which makes the human body feel uncomfortable, especially when the human body sweats a lot, the cotton fiber will swell after absorbing water, the air permeability will ...

Examples

Embodiment 1

[0044] A method for preparing a breathable and moisture-conducting fabric, specifically comprising the following steps:

[0045] S1, protection reaction of amino group

[0046] Add 200 mol of amino acid 1 and 400 mol of phthalic anhydride 2 into the reaction flask, add the solvent methylene chloride, heat to reflux for 1.5 hours, and remove the solvent by rotary evaporation after the reaction, to obtain the protected amino acid with the structure of formula 3, The yield is 96%; wherein, x in amino acid 1 is 1, and amino acid 1 is aspartic acid;

[0047]

[0048] S2, Esterification precondensation

[0049] Add 100mol of terephthalic acid 4, 100mol of protected amino acid 3, 400mol of ethylene glycol 5 and 0.4mol of catalyst aluminum acetate into a stainless steel reaction kettle, pass through nitrogen protection, and heat up to 210°C under a pressure of 0.2MPa to carry out esterification. , the oligomer 7 was obtained;

[0050]

[0051] S3, polycondensation reaction

[...

Embodiment 2

[0062] A method for preparing a breathable and moisture-conducting fabric, specifically comprising the following steps:

[0063] S1, protection reaction of amino group

[0064] Add 200 mol of amino acid 1 and 300 mol of phthalic anhydride 2 into the reaction flask, add the solvent methylene chloride, heat to reflux for 2 hours, and remove the solvent by rotary evaporation after the reaction, to obtain the protected amino acid with the structure of formula 3. The rate is 98%; wherein, x in amino acid 1 is 2, and amino acid 1 is glutamic acid;

[0065]

[0066] S2, Esterification precondensation

[0067]

[0068] Add 70 mol of terephthalic acid 4, 30 mol of protected amino acid 3, 180 mol of ethylene glycol 5 and 0.3 mol of catalyst aluminum acetate into a stainless steel reaction kettle, pass through nitrogen protection, and heat up to 225°C under a pressure of 0.2 MPa to perform esterification. , the oligomer 7 was obtained;

[0069] S3, polycondensation reaction

[...

Embodiment 3

[0080] A method for preparing a breathable and moisture-conducting fabric, specifically comprising the following steps:

[0081] S1, protection reaction of amino group

[0082] Add 200 mol of amino acid 1 and 440 mol of phthalic anhydride 2 into the reaction flask, add the solvent dichloromethane, heat to reflux for 2 hours, and remove the solvent by rotary evaporation after the reaction to obtain the protected amino acid with the structure of formula 3. The rate is 97%; wherein, x in amino acid 1 is 1, and amino acid 1 is aspartic acid;

[0083]

[0084] S2, Esterification precondensation

[0085] Add 60 mol of terephthalic acid 4, 40 mol of protected amino acid 3, 200 mol of ethylene glycol 5 and 0.25 mol of catalyst aluminum acetate into a stainless steel reaction kettle, pass in nitrogen protection, and under a pressure of 0.2 MPa, heat up to 220°C for esterification , the oligomer 7 was obtained;

[0086]

[0087] S3, polycondensation reaction

[0088] After the...

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