阅读说明：本技术 一种高疏水性纯棉超柔华夫格面料的生产工艺及华夫格面料 (Production process of high-hydrophobicity pure cotton super-soft waffle fabric and waffle fabric ) 是由 丁居兵 于 2020-12-25 设计创作，主要内容包括：本申请涉及纺织制造技术领域,具体公开了一种高疏水性纯棉超柔华夫格面料的生产工艺及华夫格面料。一种高疏水性纯棉超柔华夫格面料的生产工艺包括以下步骤,并线：将全棉纱并线成股线；织造：将股线织造成坯布；后整理：将坯布浸入疏水性后整理剂中,浸泡后得到原料布；轧干：轧干原料布表面的疏水性后整理剂,得到华夫格布；定型：经过烘干和定型加工后,得到华夫格面料。本申请的生产工艺采用全棉纱制备华夫格布,并采用疏水性后整理剂对华夫格布进行处理,有助于改善华夫格面料的疏水性。(The application relates to the technical field of textile manufacturing, and particularly discloses a production process of a high-hydrophobicity pure cotton super-soft waffle fabric and the waffle fabric. The production process of the high-hydrophobicity pure cotton super-soft waffle fabric comprises the following steps of doubling: doubling the all cotton yarn into a folded yarn; weaving: weaving the strands into a grey fabric; and (3) after finishing: immersing the grey cloth into a hydrophobic after-finishing agent to obtain raw cloth after immersion; rolling and drying: rolling the hydrophobic after-finishing agent on the surface of the dry raw material cloth to obtain the waffle cloth; shaping: and drying and shaping to obtain the waffle fabric. The production process of the application adopts all cotton yarn to prepare the waffle cloth, and adopts the hydrophobic after-finishing agent to treat the waffle cloth, thereby being beneficial to improving the hydrophobicity of the waffle cloth.)

1. A production process of a high-hydrophobicity pure cotton super-soft waffle fabric is characterized by comprising the following steps:

and (3) doubling: doubling the all cotton yarn into a folded yarn;

weaving: weaving the strands into a grey fabric;

and (3) after finishing: immersing the grey cloth into a hydrophobic after-finishing agent to obtain raw cloth after immersion;

rolling and drying: rolling the hydrophobic after-finishing agent on the surface of the dry raw material cloth to obtain the waffle cloth;

shaping: and drying and shaping to obtain the waffle fabric.

2. The production process of the high-hydrophobicity pure cotton ultra-soft waffle fabric according to claim 1, characterized in that: the twist of the all cotton yarn in the doubling step is 90-240 twist/m.

3. The production process of the high-hydrophobicity pure cotton ultra-soft waffle fabric according to claim 1, characterized in that: the hydrophobic after-finishing agent in the after-finishing step comprises the following raw materials in parts by weight: 30-50 parts of polyurethane emulsion, 20-30 parts of hydrophobic modified cyclodextrin, 8-12 parts of amino modified organosilicon and 5-8 parts of dimethyl dihydroxy ethylene urea.

4. The production process of the high-hydrophobicity pure cotton ultra-soft waffle fabric according to claim 3, characterized in that: the preparation method of the amino modified organosilicon comprises the following steps:

mixing: uniformly mixing epoxy polysiloxane resin, diethylenetriamine and isopropanol;

reaction: reacting for 2-4h at 70-90 ℃ to obtain a reactant;

refining: removing low-boiling-point substances and the solvent to obtain a refined substance;

emulsification: and (3) uniformly mixing the refined product with an emulsifier to obtain the amino modified organic silicon.

5. The production process of the high-hydrophobicity pure cotton ultra-soft waffle fabric according to claim 3, characterized in that: the hydrophobically modified cyclodextrin is a composition of polysiloxane and hydroxyethyl-beta-cyclodextrin, and the weight ratio of the polysiloxane to the hydroxyethyl-beta-cyclodextrin is 1 (1-2).

6. The production process of the high-hydrophobicity pure cotton ultra-soft waffle fabric according to claim 3, characterized in that: the solid content of the dimethyl dihydroxy ethylene urea is 40-46%.

7. The production process of the high-hydrophobicity pure cotton ultra-soft waffle fabric according to claim 3, characterized in that: also comprises MgCl of 4.2-5.2g/L₂·6H₂0.5-1.5 parts by weight of O aqueous solution.

8. The production process of the high-hydrophobicity pure cotton ultra-soft waffle fabric according to any one of claims 1 to 7, characterized in that: the preparation method of the after-finishing agent comprises the following steps,

(1) under the condition of stirring, sequentially adding amino modified organic silicon and hydrophobic modified cyclodextrin into the polyurethane emulsion, and uniformly stirring to obtain a prefabricated liquid;

(2) dropwise adding dimethyl dihydroxy ethylene urea into the prefabricated liquid, and uniformly stirring to obtain a reaction liquid;

(3) and (3) carrying out heat preservation reaction on the reaction liquid for 2-5h at the temperature of 75-95 ℃ to obtain the hydrophobic after-finishing agent.

9. The utility model provides a super gentle waffle fabric of high hydrophobicity pure cotton which characterized in that: the waffle fabric prepared by the production process of the high-hydrophobicity pure cotton ultra-soft waffle fabric according to any one of claims 1 to 8.

Technical Field

The application relates to the field of textile manufacturing technology, in particular to a production process of a high-hydrophobicity pure cotton super-soft waffle fabric and the waffle fabric.

Background

The waffle fabric is made of all cotton yarns, is woven on a rapier loom and is processed by fine processes such as dyeing and finishing. The fabric surface is excellent if the fabric is dark and bright, and the fabric is superior in quality and is excellent in cotton fabrics. Compared with the fabric woven by single raw material, the fabric has better texture, style, hand feeling and the like. The waffle fabric has concave-convex grids, is soft in hand feeling and good in elasticity, and is the first choice for pajamas and infant underwear.

In the related technology, a tying double-layer waffle fabric is disclosed, which is formed by interweaving two groups of pure cotton warp yarns and one group of pure cotton weft yarns, wherein warp float length yarns and weft float length yarns on the front surface of the fabric are gradually transited from long to short or from short to long to form a concavo-convex quadrangle with a low edge height, the back surface of the fabric has a fluffing effect, and tying double-layer tissues are adopted for weaving during weaving.

In view of the above-mentioned related art, the inventors believe that the fluffing effect of the waffle fabric prepared by the above-mentioned process reduces the hydrophobicity of the waffle fabric.

Disclosure of Invention

In order to improve the problem that the hydrophobicity of the waffle fabric is reduced by the fluffing effect, the application provides a production process of a high-hydrophobicity pure cotton super-soft waffle fabric and the waffle fabric.

In a first aspect, the application provides a production process of a high-hydrophobicity pure cotton ultra-soft waffle fabric, which adopts the following technical scheme:

a production process of high-hydrophobicity pure cotton ultra-soft waffle fabric comprises the following steps,

and (3) doubling: doubling the all cotton yarn into a folded yarn;

weaving: weaving the strands into a grey fabric;

and (3) after finishing: immersing the grey cloth into a hydrophobic after-finishing agent to obtain raw cloth after immersion;

rolling and drying: rolling the hydrophobic after-finishing agent on the surface of the dry raw material cloth to obtain the waffle cloth;

shaping: and drying and shaping to obtain the waffle fabric.

By adopting the technical scheme, because the all-cotton yarns are made into the folded yarns, the tightness of the folded yarns is smaller than that of the all-cotton yarns, and the prepared waffle fabric is compact in structure and has a hydrophobic effect; moreover, a hydrophobic after-finishing agent is adopted, and the hydrophobic after-finishing agent is beneficial to improving the hydrophobicity of the waffle fabric; therefore, the production process of the application is beneficial to improving the hydrophobicity of the waffle fabric.

Preferably, the twist of the all cotton yarn in the doubling step is 90-240 twist/m.

By adopting the technical scheme, the folded yarn made of the all-cotton yarn with the twist of 90-240 twists/m has higher strength and is beneficial to weaving.

Preferably, the hydrophobic after-finishing agent in the after-finishing step comprises the following raw materials in parts by weight: 30-50 parts of polyurethane emulsion, 20-30 parts of hydrophobic modified cyclodextrin, 8-12 parts of amino modified organosilicon and 5-8 parts of dimethyl dihydroxy ethylene urea.

By adopting the technical scheme, the polyurethane emulsion has good compatibility, and both the hydrophobic modified cyclodextrin and the amino modified organic silicon can be dissolved in the polyurethane emulsion; the inner wall and the outer wall of the hydrophobically modified cyclodextrin have good hydrophobic property, so that the hydrophobicity of the waffle fabric can be improved; however, a cross-linking structure is formed between the hydrophobic modified cyclodextrin and the fibers of the waffle fabric, so that the softness of the waffle fabric is easily reduced; the amino modified organic silicon and hydroxyl, epoxy and carboxyl in the high waffle fabric fiber are subjected to chemical reaction, so that the friction coefficient between the high waffle fabric fibers is reduced, and the influence of the hydrophobic modified cyclodextrin on the softness of the waffle fabric is reduced; the hydrophobic modified cyclodextrin is difficult to dissolve in the amino modified organic silicon, so that the hydrophobic modified cyclodextrin and the amino modified organic silicon are easy to delaminate and difficult to store after being mixed; therefore, the hydrophobic modified cyclodextrin, the amino modified organosilicon and the dimethyl dihydroxy ethylene urea are adopted, so that the preparation of the hydrophobic after-finishing agent with high hydrophobicity is facilitated, and the hydrophobic after-finishing agent has small influence on the softness of the waffle fabric and is convenient to store.

Preferably, the preparation method of the amino modified silicone comprises the following steps:

mixing: uniformly mixing epoxy polysiloxane resin, diethylenetriamine and isopropanol to obtain a mixture;

reaction: reacting the mixture at 70-90 ℃ for 2-4h to obtain a reactant;

refining: removing low-boiling-point substances and isopropanol in the reactant to obtain a refined substance;

emulsification: and (3) uniformly mixing the refined product with an emulsifier to obtain the amino modified organic silicon.

By adopting the technical scheme, the amino modified organic silicon prepared by the method is beneficial to improving the finishing effect of the hydrophobic after-finishing agent on the softness of the waffle fabric, and simultaneously, the influence of the hydrophobic after-finishing agent on the whiteness of the waffle fabric is reduced.

Preferably, the hydrophobically modified cyclodextrin is a composition of polysiloxane and hydroxyethyl-beta-cyclodextrin, and the weight ratio of the polysiloxane to the hydroxyethyl-beta-cyclodextrin is 1 (1-2).

By adopting the technical scheme, the polysiloxane contains alkoxy and epoxy, and the alkoxy, the epoxy and hydrophilic groups on the outer wall of the hydroxyethyl-beta-cyclodextrin generate adsorption, so that the polysiloxane is adsorbed on the outer wall of the hydroxyethyl-beta-cyclodextrin, the hydrophobicity of the hydroxyethyl-beta-cyclodextrin is enhanced, and the hydrophobicity of the hydrophobic modified cyclodextrin is enhanced.

Preferably, the solid content of the dimethyldihydroxyethylene urea is 40 to 46 percent.

By adopting the technical scheme, the dimethyl dihydroxy ethylene urea with the solid content of 40-46% can reduce the layering of the hydrophobic modified cyclodextrin and the amino modified organic silicon, has small influence on the whiteness of the waffle fabric, and is beneficial to reducing the influence on the appearance of the waffle fabric.

Preferably, the catalyst also comprises MgCl of 4.2-5.2g/L₂·6H₂0.5-1.5 parts by weight of O aqueous solution.

By adopting the technical scheme, MgCl₂·6H₂The aqueous O solution contributes to the reduced activation energy of the amino-modified organosilicon, MgCl₂·6H₂The too high concentration of the O aqueous solution can cause the fiber hydrolysis of the waffle fabric; MgCl₂·6H₂Of aqueous O solutionsAt too low a concentration, the reduced activation energy of the amino-modified silicone is less effective, and therefore, 4.2-5.2g/L of MgCl₂·6H₂The O aqueous solution is beneficial to reducing the activation energy of the amino modified organic silicon, and has small influence on the fiber hydrolysis of the waffle fabric.

Preferably, the preparation method of the hydrophobic after-finishing agent comprises the following steps:

(1) under the condition of stirring, sequentially adding amino modified organic silicon and hydrophobic modified cyclodextrin into the polyurethane emulsion, and uniformly stirring to obtain a prefabricated liquid;

(2) dropwise adding dimethyl dihydroxy ethylene urea into the prefabricated liquid, and uniformly stirring to obtain a reaction liquid;

(3) and (3) carrying out heat preservation reaction on the reaction liquid for 2-5h at the temperature of 75-95 ℃ to obtain the hydrophobic after-finishing agent.

By adopting the technical scheme, the mode of sequentially adding the raw materials under the stirring condition is adopted, so that the prepared prefabricated liquid is more uniform, the reaction condition of 75-95 ℃ is facilitated, and the hydrophobic property of the hydrophobic after-finishing agent is improved.

In a second aspect, the application provides a high-hydrophobicity pure cotton ultra-soft waffle fabric, which adopts the following technical scheme:

the high-hydrophobicity pure cotton super-soft waffle fabric is prepared by the production process of the high-hydrophobicity pure cotton super-soft waffle fabric.

By adopting the technical scheme, the prepared high-hydrophobicity pure cotton ultra-soft waffle fabric has strong hydrophobicity.

In summary, the present application has the following beneficial effects:

1. according to the method, all-cotton yarns are firstly doubled to prepare folded yarns, then the grey cloth is prepared, and the hydrophobic after-finishing agent is adopted to treat the grey cloth, so that the hydrophobic property of the waffle fabric is improved;

2. hydrophobic modified cyclodextrin, amino modified organosilicon and dimethyl dihydroxy ethylene urea are preferably selected in the application, so that the preparation of a hydrophobic after-finishing agent with high hydrophobicity is facilitated, and the hydrophobic after-finishing agent has small influence on the softness of the waffle fabric and is convenient to store;

3. polysiloxanes and hydroxyethyl-beta-cyclodextrin are preferred herein to help enhance the hydrophobicity of the hydrophobically modified cyclodextrin;

4. it is preferred in this application to use from 4.2 to 5.2g/L of MgCl₂·6H₂The O aqueous solution is beneficial to reducing the activation energy of the amino modified organic silicon, and has small influence on the fiber hydrolysis of the waffle fabric;

5. the method for the hydrophobic after-finishing agent is beneficial to improving the hydrophobic property of the hydrophobic after-finishing agent;

6. the high-hydrophobicity pure cotton super-soft waffle fabric prepared in the application has strong hydrophobicity.

Detailed Description

The present application will be described in further detail with reference to examples.

The starting materials used in the present examples are all commercially available. Wherein the epoxy polysiloxane resin is purchased from silver-ring chemical industry Co., Ltd, the diethylenetriamine is purchased from Jinan Shuangying chemical industry Co., Ltd, the fatty alcohol polyoxyethylene ether emulsifier is purchased from Jinan Jie Wei chemical industry science and technology Co., Ltd, the polysiloxane is purchased from Guangzhou silver-ring chemical industry Co., Ltd, the hydroxyethyl-beta-cyclodextrin is purchased from Zhengzhou food wholefood commerce Co., Ltd, the polyurethane emulsion is purchased from Anhui Huatai new material Co., Ltd, and the dimethyldihydroxy ethylene urea is purchased from Jinan Jiabang chemical industry Co., Ltd.

Preparation example of amino-modified Silicone

Preparation example 1

An amino modified organic silicon is prepared according to the following steps:

(1) mixing: putting 47kg of epoxy polysiloxane resin, 23kg of diethylenetriamine and 30kg of isopropanol into a reaction kettle, and stirring for 15min at 140r/min to obtain a mixture;

(2) reaction: reacting the mixture at 80 ℃ for 3h to obtain a reactant;

(3) refining: the reaction mixture was distilled under reduced pressure to remove low boiling substances and isopropyl alcohol, thereby obtaining a purified product.

(4) Emulsification: and (3) putting the refined product and 30kg of fatty alcohol-polyoxyethylene ether emulsifier into a reaction kettle, and stirring for 15min at 140r/min to obtain the amino modified organic silicon.

Preparation example of Hydrophobically modified Cyclodextrin

Preparation examples 2 to 4

As shown in Table I, examples 2-4 differ mainly in the ratio of the raw materials.

The following description will be given by taking example 2 as an example.

A hydrophobically modified cyclodextrin is prepared by the following steps:

polysiloxane and hydroxyethyl-beta-cyclodextrin are added into a reaction kettle, and stirred for 35min at 140r/min to obtain the hydrophobically modified cyclodextrin.

Watch 1

Preparation of hydrophobic afterfinish

Preparation examples 5 to 13

As shown in Table II, the main difference between the preparations 5 to 11 is the ratio of the raw materials.

The following description will be made by taking preparation example 5 as an example.

A hydrophobic afterfinish prepared according to the following steps:

(1) under the stirring condition of 140r/min, putting the polyurethane emulsion into a reaction kettle, sequentially dripping amino modified organic silicon and hydrophobic modified cyclodextrin into the polyurethane emulsion, stirring for 30min, and obtaining a prefabricated liquid after high shearing;

(2) under the stirring condition of 140r/min, dropwise adding dimethyl dihydroxy ethylene urea into the prefabricated liquid, and stirring for 30min to obtain a reaction liquid;

(3) heating the reaction kettle to 85 ℃, and carrying out heat preservation reaction for 3.5 hours to obtain the hydrophobic after-finishing agent.

Watch two

Preparation example 12

This preparation example differs from preparation example 10 in that 1kg of 4.7g/L MgCl was added after the completion of the incubation reaction in step (3)₂·6H₂And dropwise adding the O aqueous solution into the reaction kettle, and uniformly stirring to obtain the hydrophobic post-finishing agent.

Examples

Examples 1 to 11

As shown in Table three, examples 1-11 differ primarily in twist and hydrophobic finish of all cotton yarn.

The following description will be given by taking example 1 as an example.

A high-hydrophobicity pure cotton ultra-soft waffle fabric is prepared according to the following steps,

and (3) doubling: doubling the all cotton yarn into a folded yarn;

weaving: weaving the strand into grey cloth by a rapier machine;

and (3) after finishing: immersing the grey cloth into a hydrophobic after-finishing agent for 2 hours to obtain raw cloth;

rolling and drying: rolling the hydrophobic after-finishing agent on the surface of the dry raw material cloth to obtain the waffle cloth;

shaping: and putting the waffle cloth into an oven to be pre-dried for 30min at the temperature of 80 ℃, baking for 6h at the temperature of 120 ℃, and cutting and shaping to obtain the waffle cloth.

Watch III

Examples	Twist of all cotton yarn (twist/meter)	Hydrophobic afterfinish
			Example 1	165	Preparation example 5
Example 2	165	Preparation example 6
			Example 3	165	Preparation example 7
Example 4	165	Preparation example 8
			Example 5	165	Preparation example 9
Example 6	165	Preparation example 10
			Example 7	165	Preparation example 11
Example 8	165	Preparation example 12
			Example 9	90	Preparation example 12
Example 10	240	Preparation example 12

Comparative examples

Comparative examples 1 to 2

As shown in Table four, comparative examples 1-2 differ from example 6 in the hydrophobic afterfinish.

Watch four

Comparative example 3

This comparative example differs from example 6 in that the amino-modified silicone was replaced with Japanese RTM silicone KF-865.

Comparative example 4

This comparative example differs from example 6 in that the hydrophobically modified cyclodextrin was replaced with hydroxyethyl- β -cyclodextrin.

Comparative example

Comparative example 1

This comparative example differs from example 6 in that a hydrophobic finish was prepared according to the procedure of example 1 of the patent publication No. CN 104790202B. Soaking the grey cloth in a hydrophobic finishing agent for 2h, placing the soaked grey cloth in a drying oven for prebaking for 30min at the temperature of 80 ℃, baking for 6h at the temperature of 120 ℃, and cutting and shaping to obtain the waffle fabric.

Comparative example 2

This comparative example differs from example 6 in that the hydrophobic after-finish was replaced with water in the after-finish step.

Performance detection

The following performance tests were performed on the waffle fabrics provided in examples 1-10, comparative examples 1-4 and comparative examples 1-2 of the present application, and the test data are shown in table five. Wherein, the hydrophobicity of the waffle fabric is detected according to the detection standard of AATCC 22-2014; the stiffness of the waffle fabric before and after finishing is tested according to ZB W04003-87 inclined plane cantilever method for testing the stiffness of the fabric, and the smaller the stiffness, the better the softness of the fabric. The measurement of whiteness was performed using Datacolor 600.

Watch five

It can be seen by combining examples 1-10 and comparative examples 1-2 and combining table five that the hydrophobicity of the waffle fabrics prepared in examples 1-3 is greatly improved compared with that of the waffle fabrics prepared in comparative examples 1-2, and meanwhile, the waffle fabrics prepared in examples 1-3 have lower stiffness and better softness, and have smaller influence on the whiteness value of the waffle fabrics, so that the waffle fabrics prepared in the application have better hydrophobicity and softness, and have good whiteness.

As can be seen by combining example 6 with comparative example 3 and by combining table five, the waffle fabric prepared in example 6 has better hydrophobicity and softness, which indicates that the amino-modified silicone of the present application helps to improve the performance of the hydrophobic after-finish, thereby improving the hydrophobicity and softness of the waffle fabric.

As can be seen by combining example 6 with comparative example 4 and by combining table five, the waffle fabric prepared in example 6 has better hydrophobicity and softness, which indicates that the hydrophobically modified cyclodextrin helps to improve the performance of the hydrophobic after-finish, thereby improving the hydrophobicity and softness of the waffle fabric.

As can be seen by combining example 6 and comparative examples 1-2 with Table V, the waffle fabrics prepared in example 6 have better hydrophobicity and softness, which shows that the hydrophobic after-finishing agent prepared in the application has better improvement effect on the hydrophobicity and softness of the waffle fabrics.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.