Cool breathable clothing fabric and preparation method thereof

Abstract

The invention relates to the technical field of fabrics, and discloses a cool breathable clothing fabric and a preparation method thereof, maleic ester modified cellulose and N-(3-chloro-2-hydroxypropyl)-N, N-dimethyl-N-alkyl ammonium chloride are subjected to a reaction, sodium hydroxide hydrolysis is performed, and a biquaternary ammonium salt carboxyl cellulose finishing agent is obtained. The cotton fabric is subjected to two-time dipping and two-time rolling finishing, and the cool breathable clothing fabric is obtained. The finishing agent contains biquaternary ammonium salt carboxyl cellulose containing a large amount of sodium carboxylate and quaternary ammonium salt groups, after the cotton fabric is finished, the hydrophilicity and moisture regain of the fabric are remarkably improved, absorption and diffusion of the fabric to sweat are promoted, heat is taken away through evaporation, the body surface temperature is reduced, and therefore the cool feeling is improved, and the fabric is cool and comfortable to wear and is moisture-permeable and breathable. The biquaternary ammonium salt group contained in the finishing agent has a stronger antibacterial effect, can effectively inhibit and kill bacteria and microorganisms, and enhances the antibacterial performance of the fabric.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fabric, in particular to a cool and breathable clothing fabric and a preparation method thereof. BACKGROUND

[0002] Cotton fabric has good air permeability, high softness and excellent skin friendliness, and does not irritate the skin, and is a common clothing fabric. However, cotton fabric has strong moisture absorption and is prone to bacterial growth, which poses certain health hazards to the human body, and therefore it is of great significance to perform antibacterial treatment on cotton fabric.

[0003] By finishing the fabric, the fabric can be endowed with excellent moisture absorption, antibacterial, softening, hand feeling and other effects. Cellulose is cheap and easy to obtain, has good biocompatibility, is non-toxic and environmentally friendly, and has a wide application in fabric finishing agents.

[0004] Patent No. CN107022900B discloses a fabric softener and a preparation method thereof. Polydimethylsiloxane, carboxymethyl cellulose, and bis-hexadecyl dimethyl ammonium chloride are used as the softener. The finished fabric has good antibacterial rate and soft hand feeling. However, the softener does not improve the hydrophilicity and other properties of the fabric, which is not conducive to improving the moisture permeability and air permeability of the fabric. SUMMARY

[0005] (I) The technical problem solved by the present application is to provide a cool and breathable clothing fabric and a preparation method thereof to solve the problem of poor antibacterial performance of cotton fabric, and to maintain good hydrophilicity, coolness, moisture permeability and air permeability.

[0006] (II) Technical solution: A preparation method of a cool and breathable clothing fabric comprises the following steps:

[0007] S1. Add isopropyl alcohol, maleate-modified cellulose, and N-(3-chloro-2-hydroxypropyl)-N,N-dimethyl-N-alkyl ammonium chloride into a flask equipped with a condensation reflux tube, heat to 80-85 DEG C, and perform quaternary ammonium reaction for 24-36 h. After filtration, the product is added to a sodium hydroxide aqueous solution, heated to 80-90 DEG C, and stirred for 4-6 h. The solution is poured into ethanol, and the product is washed with ethanol after filtration and dried to obtain a double-quaternary ammonium salt carboxymethyl cellulose finishing agent. The reaction formula is as follows:

[0008]

[0009] S2. Add water and double-quaternary ammonium salt carboxymethyl cellulose finishing agent into a container, stir, and then add cotton fabric, with a bath ratio of 1:(40-50). Perform double-dipping and double-rolling, with a rolling rate of 80-90%. Then, pre-dry at 80-90 DEG C for 3-5 min, and bake at 155-165 DEG C for 3-4 min to obtain a cool and breathable clothing fabric.

[0010] Preferably, the ratio of maleate-modified cellulose and N-(3-chloro-2-hydroxypropyl)-N,N-dimethyl-N-dodecyl ammonium chloride in S1 is 100g:(8-30)g.

[0011] Preferably, the structural formula of N-(3-chloro-2-hydroxypropyl)-N,N-dimethyl-N-alkyl ammonium chloride in S1 is n is 12-16.

[0012] Preferably, the concentration of aqueous sodium hydroxide solution in S1 is 80-120g / L.

[0013] Preferably, the ratio of water and double quaternary ammonium salt carboxymethyl cellulose finishing agent in S2 is 1L:(20-50)g.

[0014] Preferably, the preparation method of maleate-modified cellulose comprises:

[0015] (1) adding tetrahydrofuran, cellulose and 3-methylaminopropionic acid into a flask, stirring and then adding 4-dimethylaminopyridine and dicyclohexyl carbodiimide, wherein the ratio of cellulose, 3-methylaminopropionic acid, 4-dimethylaminopyridine and dicyclohexyl carbodiimide is 100g:(2.1-10)g:(1.8-8.6)g:(4.4-20.8)g; stirring at 20-30℃ for 18-24h, pouring the solution into ethanol, washing the product with water and ethanol after filtration, and drying to obtain methylaminopropionic acid ester-based cellulose. The reaction formula is:

[0016]

[0017] (2) adding N,N-dimethylformamide, methylaminopropionic acid ester-based cellulose with a ratio of 100g:(3.2-16)g and dimethyl maleate into a flask, heating to 40-50℃, stirring for 8-12h, pouring the solution into ethanol, washing the product with ethanol after filtration, and drying to obtain maleate-modified cellulose. The reaction formula is:

[0018]

[0019] (III) Beneficial technical effects: the present application carries out amidation and Michael addition reaction on cellulose, 3-methylaminopropionic acid and dimethyl maleate, and finally obtains double quaternary ammonium salt carboxymethyl cellulose finishing agent containing a large amount of sodium carboxylate and quaternary ammonium salt groups through quaternization and sodium hydroxide hydrolysis. After finishing the cotton fabric, the hydrophilicity and moisture regain of the fabric are significantly improved, the absorption and diffusion of sweat by the fabric are promoted, and the heat is taken away through evaporation, thereby reducing the body surface temperature and improving the cool feeling. The fabric is more comfortable to wear.

[0020] The finishing agent of the present application contains a double quaternary ammonium salt group, which can destroy the permeability of the bacterial cell membrane, has stronger antibacterial effect, can effectively inhibit and kill bacterial microorganisms, and enhances the antibacterial performance of the fabric. DETAILED DESCRIPTION

[0021] Example 1

[0022] (1) Add 400 mL of tetrahydrofuran, 50 g of cellulose, and 1.05 g of 3-methylamino propionic acid into a flask, stir, then add 0.9 g of 4-dimethylaminopyridine and 2.2 g of dicyclohexyl carbodiimide, stir at 30°C for 18 h of reaction, pour the solution into ethanol, filter the product, wash with water and ethanol, and dry to obtain methylamino propionate-based cellulose.

[0023] (2) Add 0.9 L of N,N-dimethylformamide, 80 g of methylamino propionate-based cellulose, and 2.56 g of dimethyl maleate into a flask, heat to 45°C, stir for 8 h of reaction, pour the solution into ethanol, filter the product, wash with ethanol, and dry to obtain maleate-modified cellulose.

[0024] (3) Add 500 mL of isopropyl alcohol, 40 g of maleate-modified cellulose, and 3.2 g of N-(3-chloro-2-hydroxypropyl)-N,N-dimethyl-N-dodecyl ammonium chloride (with a structural formula of ) into a flask equipped with a condenser reflux tube, heat to 85°C, quaternary ammonization for 30 h, filter the product, add it to 600 mL of 120 g / L sodium hydroxide aqueous solution, heat to 80°C, stir for 6 h of hydrolysis, pour the solution into ethanol, filter the product, wash with ethanol, and dry to obtain double quaternary ammonium salt carboxyl cellulose finishing agent.

[0025] (4) Add 10 L of water and 200 g of double quaternary ammonium salt carboxyl cellulose finishing agent into a container, stir, add cotton fabric, with a bath ratio of 1:50, perform double-dip-double-nip, with a pick-up rate of 90%; then pre-dry at 80°C for 3 min, and bake at 160°C for 3 min to obtain cool and breathable clothing fabric.

[0026] Example 2

[0027] (1) Add 500 mL of tetrahydrofuran, 50 g of cellulose, and 5 g of 3-methylamino propionic acid into a flask, stir, then add 4.3 g of 4-dimethylaminopyridine and 10.4 g of dicyclohexyl carbodiimide, stir at 30°C for 18 h of reaction, pour the solution into ethanol, filter the product, wash with water and ethanol, and dry to obtain methylamino propionate-based cellulose.

[0028] (2) To a flask, add 1 L of N,N-dimethylformamide, 80 g of methylamino propionate cellulose, 12.8 g of dimethyl maleate, heat to 40 °C, stir for 12 h, pour the solution into ethanol, filter the product after washing with ethanol, and dry to obtain maleate modified cellulose.

[0029] (3) To a flask equipped with a condenser reflux tube, add 600 mL of isopropyl alcohol, 40 g of maleate modified cellulose, 12 g of N-(3-chloro-2-hydroxypropyl)-N,N-dimethyl-N-tetradecyl ammonium chloride (structure is ), heat to 80 °C, quaternary ammonium reaction for 36 h, after filtration, add the product to 800 mL of 80 g / L sodium hydroxide aqueous solution, heat to 90 °C, stir for 5 h, pour the solution into ethanol, filter the product after washing with ethanol, and dry to obtain a double quaternary ammonium salt carboxyl cellulose finishing agent.

[0030] (4) To a container, add 10 L of water, 350 g of double quaternary ammonium salt carboxyl cellulose finishing agent, stir, add cotton fabric, bath ratio is 1:40, dip and roll twice, with a pick-up rate of 80%; then pre-dry at 80 °C for 5 min, and bake at 155 °C for 4 min to obtain a cool and breathable clothing fabric.

[0031] Example 3:

[0032] (1) To a flask, add 500 mL of tetrahydrofuran, 50 g of cellulose, 3.2 g of 3-methylamino propionic acid, stir, add 2.7 g of 4-dimethylamino pyridine, 6.8 g of dicyclohexyl carbodiimide, stir at 20 °C for 24 h, pour the solution into ethanol, filter the product after washing with water and ethanol, and dry to obtain methylamino propionate cellulose.

[0033] (2) To a flask, add 1 L of N,N-dimethylformamide, 80 g of methylamino propionate cellulose, 7.3 g of dimethyl maleate, heat to 50 °C, stir for 8 h, pour the solution into ethanol, filter the product after washing with ethanol, and dry to obtain maleate modified cellulose.

[0034] (3) To a flask equipped with a condenser reflux tube, add 600 mL of isopropyl alcohol, 40 g of maleate modified cellulose, 7.9 g of N-(3-chloro-2-hydroxypropyl)-N,N-dimethyl-N-hexadecyl ammonium chloride (structure is ), heat to 85 °C, quaternary ammonium reaction for 24 h, after filtration, add the product to 700 mL of 110 g / L sodium hydroxide aqueous solution, heat to 90 °C, stir for 4 h, pour the solution into ethanol, filter the product after washing with ethanol, and dry to obtain a double quaternary ammonium salt carboxyl cellulose finishing agent.

[0035] (4) Add 10 L of water, 500 g of the diquaternary ammonium salt carboxycellulose finishing agent into a container, add cotton fabric after stirring, bath ratio is 1:40, carry out two dip and two roll, pick up rate is 80%; then pre-dry at 90°C for 4 min, bake at 165°C for 3 min, obtain cool and breathable clothing fabric.

[0036] Comparative Example 1:

[0037] (1) Add 10 L of water, 200 g of carboxymethyl cellulose into a container, add cotton fabric after stirring, bath ratio is 1:50, carry out two dip and two roll, pick up rate is 90%; then pre-dry at 80°C for 3 min, bake at 160°C for 3 min, obtain clothing fabric.

[0038] Comparative Example 2:

[0039] (1) Add 600 mL of sodium hydroxide aqueous solution with concentration of 120 g / L, 40 g of maleate modified cellulose into a flask equipped with a condensing reflux tube, heat to 80°C, hydrolyze for 6 h after stirring, pour the solution into ethanol, wash the product with ethanol after filtration, dry, obtain di-carboxylic cellulose finishing agent.

[0040] (2) Add 10 L of water, 200 g of di-carboxylic cellulose finishing agent into a container, add cotton fabric after stirring, bath ratio is 1:50, carry out two dip and two roll, pick up rate is 90%; then pre-dry at 80°C for 3 min, bake at 160°C for 3 min, obtain clothing fabric.

[0041] Comparative Example 3:

[0042] (1) Add 500 mL of isopropyl alcohol, 40 g of carboxymethyl cellulose, 3.2 g of N-(3-chloro-2-hydroxypropyl)-N,N-dimethyl-N-dodecyl ammonium chloride, 0.45 g of sodium hydroxide into a flask equipped with a condensing reflux tube, heat to 85°C, react for 30 h, after filtration, add the product into 600 mL of sodium hydroxide aqueous solution with concentration of 120 g / L, heat to 80°C, hydrolyze for 6 h after stirring, pour the solution into ethanol, wash the product with ethanol after filtration, dry, obtain quaternary ammonium salt carboxy cellulose finishing agent.

[0043] (2) Add 10 L of water, 200 g of quaternary ammonium salt carboxy cellulose finishing agent into a container, add cotton fabric after stirring, bath ratio is 1:50, carry out two dip and two roll, pick up rate is 90%; then pre-dry at 80°C for 3 min, bake at 160°C for 3 min, obtain clothing fabric.

[0044] Take unfinishing cotton fabric as control group.

[0045] Table 1 Performance of cotton fabric

[0046]

[0047] Compared with the unfinishing cotton fabric, the clothing fabric is finished by the double quaternary ammonium salt carboxyl cellulose finishing agent in each embodiment, the finishing agent contains a large amount of hydrophilic sodium carboxylate and double quaternary ammonium salt groups, the hydrophilicity and moisture regain of the cotton fabric are significantly improved, the wearing is more cool and comfortable, and the double quaternary ammonium salt groups have stronger antibacterial effect, can effectively inhibit and kill bacterial microorganisms, and significantly improve the antibacterial performance of the fabric.

[0048] The cotton fabric is finished by the conventional carboxymethyl cellulose in Comparative Example 1, the carboxyl content is less, and the double quaternary ammonium salt groups are not contained, the moisture regain of the fabric is low, and the antibacterial performance is poor. The double carboxyl cellulose finishing agent in Comparative Example 2 does not contain the quaternary ammonium salt antibacterial group, and the antibacterial performance of the fabric is poor. The etherification reaction of the carboxymethyl cellulose is carried out by the conventional N-(3-chloro-2-hydroxypropyl)-N,N-dimethyl-N-dodecyl ammonium chloride in Comparative Example 3, the content of the quaternary ammonium salt groups and sodium carboxylate groups of the quaternary ammonium salt carboxyl cellulose finishing agent is less, and the moisture regain and antibacterial rate of the fabric are lower than those of Example 1.

Claims

1. A method for preparing a cool and breathable clothing fabric, characterized by, The preparation method comprises: S1, adding isopropyl alcohol, maleate modified cellulose, N-(3-chloro-2-hydroxypropyl)-N,N-dimethyl-N-alkyl ammonium chloride into a flask equipped with a condensing reflux tube, heating to 80-85℃, reacting for 24-36h, after filtration, adding the product into sodium hydroxide aqueous solution, heating to 80-90℃, stirring for 4-6h, pouring the solution into ethanol, after filtration, washing the product, drying to obtain a double quaternary ammonium salt carboxymethyl cellulose finishing agent; S2, adding water and the double quaternary ammonium salt carboxymethyl cellulose finishing agent into a container, after stirring, adding cotton fabric, bath ratio is 1:(40-50), carrying out double-dip-double-pad, pad ratio is 80-90%; then pre-drying at 80-90℃ for 3-5min, baking at 155-165℃ for 3-4min to obtain a cool and breathable clothing fabric.

2. The method of making a cool, breathable apparel fabric according to claim 1, wherein, The ratio of maleate modified cellulose and N-(3-chloro-2-hydroxypropyl)-N,N-dimethyl-N-dodecyl ammonium chloride in S1 is 100g:(8-30)g.

3. The method of making a cool, breathable apparel fabric according to claim 2, wherein, The structural formula of N-(3-chloro-2-hydroxypropyl)-N,N-dimethyl-N-alkyl ammonium chloride in S1 is n is 12-16.

4. The method of making a cool, breathable apparel fabric according to claim 1, wherein, The concentration of sodium hydroxide aqueous solution in S1 is 80-120g / L.

5. The method of making a cool, breathable apparel fabric according to claim 1, wherein, The ratio of water and the double quaternary ammonium salt carboxymethyl cellulose finishing agent in S2 is 1L:(20-50)g.

6. The method of making a cool, breathable apparel fabric according to claim 2, wherein, The preparation method of the maleate modified cellulose comprises: (1) adding tetrahydrofuran, cellulose and 3-methylaminopropionic acid into a flask, after stirring, adding 4-dimethylaminopyridine and dicyclohexyl carbodiimide, stirring at 20-30℃ for 18-24h, pouring the solution into ethanol, after filtration, washing the product, drying to obtain methylaminopropionic acid ester based cellulose; (2) adding N,N-dimethylformamide, methylaminopropionic acid ester based cellulose and dimethyl maleate into a flask, heating to 40-50℃, stirring for 8-12h, pouring the solution into ethanol, after filtration, washing the product, drying to obtain maleate modified cellulose.

7. The method of making a cool, breathable apparel fabric according to claim 6, wherein, The ratio of cellulose, 3-methylaminopropionic acid, 4-dimethylaminopyridine and dicyclohexyl carbodiimide in (1) is 100g:(2.1-10)g:(1.8-8.6)g:(4.4-20.8)g.

8. The method of making a cool, breathable apparel fabric according to claim 6, wherein, The ratio of methylaminopropionic acid ester based cellulose and dimethyl maleate in (2) is 100g:(3.2-16)g.

9. A cool and breathable clothing fabric obtained by the preparation method of any one of claims 1-8.

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