CN105648741B - A kind of wool keratin is modified the soft technique of pure cotton fabric - Google Patents

Abstract

The invention discloses a softening process of wool keratin modified pure cotton fabric. It comprises the following steps: 1) ultrasonically treating the pure cotton fabric at 75-85°C and 235-245W for 0.5-0.8h to obtain the pure cotton fabric after ultrasonic treatment; 2) soaking the pure cotton fabric after ultrasonic treatment in wool Carry out modification treatment in keratin solution, take out and dry again, obtain the pure cotton fabric after modification; , to obtain a soft wool keratin modified cotton fabric. The prepared wool keratin modified pure cotton fabric is soft, and the softness will not decrease after long-term use, and the softness process is simple and the process efficiency is high.

Description

Softening process of wool keratin modified pure cotton fabric

technical field

The invention belongs to the technical field of softening modified pure cotton fabrics, and in particular relates to a softening process of wool keratin modified pure cotton fabrics.

Background technique

Wool fiber is an earlier textile and clothing fiber developed by human beings. It has good moisture absorption, sweat-conducting, soft and breathable properties. Due to the excellent performance of wool fiber, it is loved by consumers. Every year, my country imports a large amount of wool fiber from abroad to make up for the domestic gap. And because the existing weaving process has caused a large amount of leftover hair, waste wool, and low-quality wool to be unusable and discarded, resulting in a waste of resources. The pure cotton fabric can make full use of the characteristics of wool after being modified by wool keratin, improve its own performance characteristics, and increase the added value of the fabric.

The hand of cotton fabric modified by wool keratin coating is harder than that before modification. At present, the soft method of pure cotton fabric modified by wool keratin is mainly to adjust the cotton fabric when wool keratin is modified. Wool keratin temperature (Li Guoping, Sun Weiguo, Xie Huan. The influence of temperature on the properties of wool solution finishing cotton fabrics [J]. Textile Science and Technology Progress, 2011 (4): 39-40.), but there are great defects in this method, If the temperature is too low, it will not have a good finishing effect, and if the temperature is too high, it will cause the denaturation of wool keratin, so that the pure cotton fabric modified by wool keratin will lose its proper wearability. And Wang Jiangbo et al. (Wang Jiangbo, Liu Jianyong. The application of softener in the anti-wrinkle finishing of cotton fabric protein solution [J]. Shanghai Textile Science and Technology, 2011 (11): 55-58.) by using softener DT-7730 to wool horn The post-finishing of protein-modified pure cotton fabrics makes the modified pure cotton fabrics have a certain degree of softness, but before the pure cotton fabrics are modified with wool keratin, the pure cotton fabrics are only pre-wetted and directly impregnated in protein finishing. In this way, not only the wool keratin modification of the pure cotton fabric cannot be fully carried out, but also the softness of the pure cotton fabric cannot be effectively improved.

Chinese patent document CN 103194906 A discloses a silicone softening process for cashmere cotton denim, comprising the following steps: adding 3 owf%-6 owf% silicone oil and 0.5g/L-2g/L penetrant to the bath , adjust the pH value to 5.0-6.0, put it into cashmere cotton denim, treat it for 30min-60min at a temperature of 30°C-50°C and a bath ratio of 1:20-1:30, rinse and dry. In this patent document, the cashmere cotton denim is directly put into a bath for softening, but the cashmere cotton denim cannot effectively contact and react with active ingredients, the softening effect is poor, and the softness will decrease after long-term use.

Contents of the invention

The purpose of the present invention is to solve the problem that the cotton fabric after the modification of wool keratin in the prior art has a relatively hard feel, and the effect of softening the cotton fabric after the modification of wool keratin with a softener is poor, and the softness will deteriorate after long-term use. The technical problems are reduced, and then a soft process for wool keratin modified pure cotton fabric is provided.

For this reason, the technical scheme that the present invention adopts is,

A kind of softening technique of wool keratin modified pure cotton fabric, comprises the steps:

1) Ultrasonic treatment of pure cotton fabric at 75-85°C and 235-245W for 0.5-0.8h to obtain pure cotton fabric after ultrasonic treatment;

2) immersing the pure cotton fabric after the ultrasonic treatment in the wool keratin solution for modification treatment, then taking it out and drying to obtain the modified pure cotton fabric;

3) Soaking the modified pure cotton fabric in the mixture of softener and penetrating agent for soft finishing, then taking it out and drying to obtain soft wool keratin modified pure cotton fabric.

In the above softening process, in step 1), specifically, the pure cotton fabric can be soaked in water and ultrasonically treated at 80°C and 240W for 0.5h to obtain the pure cotton fabric after ultrasonic treatment.

In the above softening process, in step 2), the temperature of the modification treatment is 45-55° C. (eg 50° C.) and the time is 20-30 minutes.

The temperature of the drying treatment is 55-60° C. (such as 60° C.), and it is dried to a constant weight.

The bath ratio of the pure cotton fabric after the ultrasonic treatment to the wool keratin solution is 1:20-30 (such as 1:20).

The mass fraction of the wool keratin solution is 30-35% (such as 30%).

In the above softening process, step 2) also includes draining the taken-out pure cotton fabric at 20-25° C. (such as 20° C.) before drying.

In the above softening process, in step 3), the amount of the softener in the mixed solution of the softener and the penetrating agent is 0.5o.w.f% to 1.0o.w.f%, and the amount of the penetrating agent is 5.0o.w.f%-5.5o.w.f% (such as 5o.w.f% w.f%).

The pH value of the mixture of softening agent and penetrating agent is 5.0-6.0, and acetic acid can be added to the mixture of softening agent and penetrating agent to adjust the pH value to 5.0-6.0.

The bath ratio of the modified pure cotton fabric to the mixture of softener and penetrating agent is 1: (10-20).

The temperature of the soft finishing is 40-45° C. (such as 40° C.), and the time is 20-30 minutes.

The temperature of the drying treatment is 60-80° C., and it is dried to a constant weight.

The present invention also provides the wool keratin modified pure cotton fabric prepared by the above softening process.

Compared with the prior art, the present invention has the following beneficial effects:

1) The softening process of the wool keratin modified pure cotton fabric provided by the present invention, by ultrasonically treating the pure cotton fabric at 75-85°C and 235-245W for 0.5-0.8h, on the one hand makes the surface of the pure cotton fabric form many Smaller pits increase the specific surface area of pure cotton fabrics, which is beneficial to the subsequent full contact with wool keratin, increases the grafting rate of wool keratin and the degree of cross-linking in the modification process, and finally improves the purity of wool keratin modification. The softness of cotton fabric; on the other hand, through ultrasonic treatment, and limit the temperature, power and processing time, the pure cotton fabric will be fluffy without being too fluffy and broken, and the pure cotton fabric and the subsequent wool keratin Sufficient contact can increase the grafting rate of wool keratin and the tightness of crosslinking in the modification treatment, and finally improve the softness of wool keratin modified pure cotton fabric;

2) The softening process of the wool keratin modified pure cotton fabric provided by the present invention is modified by immersing the pure cotton fabric after ultrasonic treatment in the wool keratin solution, and the temperature of the modified treatment is limited to 45- 55°C (such as 50°C), the time is 20-30min, and the bath ratio is 1:20-30. By limiting the appropriate temperature and time, it is avoided that the wool keratin cannot be fully grafted and cross-linked with the pure cotton fabric when the temperature is too low. Moreover, the tightness of grafting and crosslinking is not high, resulting in the softness of the subsequent wool keratin modified cotton fabrics becoming worse and worse during use; at the same time, it also avoids the denaturation of wool keratin due to excessive temperature and the loss of wool keratin modification. The softness effect brought by sex;

When the moisture is evaporated by drying, the wool keratin and the modified cotton fabric are further fully grafted and cross-linked, and the compactness is higher.

3) The softening process of the wool keratin modified pure cotton fabric provided by the present invention is to soften and finish the modified pure cotton fabric by immersing it in the mixed solution of softener and penetrating agent, then take it out and dry it, and further pass the definition The pH value of the mixed solution is 5.0-6.0, providing a suitable soft finishing environment; by limiting the softening finishing temperature to 40-45°C (such as 40°C), the time is 20-30min, and the liquor ratio is 1/10-1/20 , the temperature of the drying treatment is 60-80°C, combined with the fluffy cotton fabric and many small pits on its surface, so that the softener and penetrating agent can fully enter the pure cotton fabric and wool keratin to react, and the overall improvement Softness of cotton fabrics modified with wool keratin.

4) The softening process of the wool keratin modified pure cotton fabric provided by the present invention, the amount of the softener in the mixed solution of the softener and the penetrating agent is 0.5o.w.f%～1.0o.w.f%, and the consumption of the penetrating agent is 5.0o.w.f% -5.5o.w.f% (such as 5o.w.f%), while improving the utilization efficiency of the softener, it can also improve the modification effect at the lowest cost.

5) The softening process of the wool keratin modified pure cotton fabric provided by the present invention, by controlling the mass fraction of the wool keratin solution at 30-35% (such as 30%), the properties of the wool keratin suspension in this concentration range Stable, does not settle, and readily cross-links with ultrasonically treated cotton fabrics.

6) The softening process of the wool keratin modified pure cotton fabric provided by the present invention improves the softness of the wool keratin modified pure cotton fabric from the beginning of preparing the wool keratin modified pure cotton fabric. The amount of wool keratin in cotton fabric improves its softness; on the other hand, it also provides a structure that is conducive to the softening and finishing of softeners and penetrants, such as fluffy, many smaller pits, and sufficient grafting and crossing. Linked structure.

Detailed ways

Softeners and penetrants in this application are all softeners and penetrants that can be used when treating fabrics at present. Hydrophilic silicone oil 801 was purchased from Dongguan Jiahong Organic Silicon Technology Co., Ltd.; the penetrant product model used was penetrant JFC, which was purchased from Jiangsu Haian Petrochemical Plant; the pure cotton fabric used was carded pure cotton mid-plain cloth ( Yarn count: 21s/1×21s/1; warp and weft yarn density: 600/10cm×520/10cm; sample width: 112cm; purchased from Zhengzhou Huarun Textile & Garment Co., Ltd.);

The wool keratin solution used in each of the following examples and comparative examples is a suspension, which is according to the literature (Yang Xu. Electrospinning wool keratin silk nanofibers and performance characterization [J]. Woolen Science and Technology, 2015,43 (10) :10-13.) extracted by the method.

Embodiment 1, the softening process of wool keratin modified pure cotton fabric:

This softening process comprises the steps:

1) Ultrasonically treat the pure cotton fabric at 80°C and 240W for 0.5h to obtain the pure cotton fabric after ultrasonic treatment, observe the pure cotton fabric after ultrasonic treatment through a metallographic microscope, and find that many smaller pits are formed on the surface, The structure is fluffy, and there is no fiber breakage in pure cotton fabrics;

2) The pure cotton fabric after the ultrasonic treatment is immersed in the wool keratin solution with a mass fraction of 30% according to the bath ratio of 1:20 for modification treatment, wherein the temperature of the modification treatment is 50°C and the time is 20min. Then clamp the four corners of the taken out pure cotton fabric with clips, lay it horizontally, drain the water in an environment of 20°C, and finally dry it to a constant weight at 60°C to obtain a modified pure cotton fabric. Phase microscopy observed that many smaller pits in the modified cotton fabric were grafted and cross-linked with more wool keratin than without pits, and the wool keratin also entered the fiber interior of the pure cotton fabric and interacted with it. Grafting and crosslinking, the wool keratin inside the fiber and the fiber surface are cross-linked, which increases the connection strength between the wool keratin and the pure cotton fabric, and makes the wool keratin modified cotton fabric soft and stable during use.

3) Soak the modified pure cotton fabric in the mixture of softener and penetrant at a bath ratio of 1:10, and soften and finish it at 40°C for 30 minutes, wherein the amount of softener is controlled at 0.5o.w.f%. The dosage is 5o.w.f%, the pH value of the mixture of softening agent and penetrating agent is 5.0, then take it out and dry it to constant weight at 60°C to obtain soft wool keratin modified pure cotton fabric.

Embodiment 2, the softening technique of wool keratin modified pure cotton fabric:

This softening process comprises the steps:

1) The pure cotton fabric was ultrasonically treated at 75°C and 245W for 0.5h to obtain the pure cotton fabric after ultrasonic treatment. The pure cotton fabric after ultrasonic treatment was observed through a metallographic microscope, and it was found that many smaller pits were formed on the surface. The structure is fluffy, and there is no fiber breakage in pure cotton fabrics;

2) The pure cotton fabric after the ultrasonic treatment is immersed in the wool keratin solution with a mass fraction of 30% according to the bath ratio of 1:25 for modification treatment, wherein the temperature of the modification treatment is 45°C and the time is 30min. Then clamp the four corners of the taken out pure cotton fabric with clips, lay it horizontally, drain the water in an environment of 22°C, and finally dry it to a constant weight at 60°C to obtain a modified pure cotton fabric. Phase microscopy observed that many smaller pits in the modified cotton fabric were grafted and cross-linked with more wool keratin than without pits, and the wool keratin also entered the fiber interior of the pure cotton fabric and interacted with it. Grafting and crosslinking, the wool keratin inside the fiber and the fiber surface are cross-linked, which increases the connection strength between the wool keratin and the pure cotton fabric, and makes the wool keratin modified cotton fabric soft and stable during use.

3) Soak the modified pure cotton fabric in the mixture of softener and penetrant at a bath ratio of 1:20, and soften it at 40°C for 20 minutes. The dosage is 5o.w.f%, the pH value of the mixture of softening agent and penetrating agent is 6.0, and then taken out and dried to constant weight at 80°C to obtain soft wool keratin modified pure cotton fabric.

Embodiment 3, the softening technique of wool keratin modified pure cotton fabric:

This softening process comprises the steps:

1) Ultrasonically treat the pure cotton fabric at 85°C and 235W for 0.8h to obtain the pure cotton fabric after ultrasonic treatment, observe the pure cotton fabric after ultrasonic treatment through a metallographic microscope, and find that many smaller pits are formed on the surface, The structure is fluffy, and there is no fiber breakage in pure cotton fabrics;

2) The pure cotton fabric after ultrasonic treatment is immersed in a wool keratin solution with a mass fraction of 32% at a bath ratio of 1:30 for modification treatment, wherein the temperature of the modification treatment is 55°C and the time is 25min. Then clamp the four corners of the taken out pure cotton fabric with clips, lay it horizontally, drain the water in an environment of 25°C, and finally dry it to a constant weight at 55°C to obtain a modified pure cotton fabric. Phase microscopy observed that many smaller pits in the modified cotton fabric were grafted and cross-linked with more wool keratin than without pits, and the wool keratin also entered the fiber interior of the pure cotton fabric and interacted with it. Grafting and crosslinking, the wool keratin inside the fiber and the fiber surface are cross-linked, which increases the connection strength between the wool keratin and the pure cotton fabric, and makes the wool keratin modified cotton fabric soft and stable during use.

3) Soak the modified pure cotton fabric in the mixture of softener and penetrant at a bath ratio of 1:15, and soften it at 45°C for 25 minutes, wherein the amount of softener is controlled to 0.8o.w.f%. The dosage is 5.5o.w.f%, the pH value of the mixture of softening agent and penetrating agent is 5.5, and then taken out and dried to constant weight at 70°C to obtain soft wool keratin modified pure cotton fabric.

Comparative example 1,

1) The pure cotton fabric is immersed in the wool keratin solution with a mass fraction of 30% according to the bath ratio of 1:20 for modification treatment, wherein the temperature of the modification treatment is 50°C and the time is 20min, and then the taken out The four corners of the pure cotton fabric are clamped with clips, placed horizontally, drained of water in an environment of 20°C, and finally dried to a constant weight at 60°C to obtain a modified pure cotton fabric;

2) Soak the modified pure cotton fabric in the mixture of softener and penetrant at a bath ratio of 1:10, and soften and finish it at 40°C for 30 minutes. The dosage is 5o.w.f%, the pH value of the mixture of softening agent and penetrating agent is 5.0, and then taken out and dried to constant weight at 60°C to obtain wool keratin modified pure cotton fabric.

Comparative example 2,

This softening process comprises the steps:

1) Ultrasonically treat the pure cotton fabric at 80°C and 240W for 0.5h to obtain the pure cotton fabric after ultrasonic treatment, observe the pure cotton fabric after ultrasonic treatment through a metallographic microscope, and find that many smaller pits are formed on the surface, The structure is fluffy, and there is no fiber breakage in pure cotton fabrics;

2) The pure cotton fabric after the ultrasonic treatment is immersed in the wool keratin solution with a mass fraction of 30% according to the bath ratio of 1:20 for modification treatment, wherein the temperature of the modification treatment is 50°C and the time is 20min. Then clamp the four corners of the taken out pure cotton fabric with clips, lay it horizontally, drain the water in an environment of 20°C, and finally dry it to a constant weight at 60°C to obtain a modified pure cotton fabric;

3) Immerse the modified pure cotton fabric in a softener at a bath ratio of 1:10 (the softener is Wang Jiangbo, Liu Jianyong. Application of softener in protein solution anti-wrinkle finishing of cotton fabric[J]. Shanghai Textile Science and Technology, 2011(11): 55-58 in the mixed solution of softening agent DT-7730) and penetrating agent (penetrating agent in Example 1), and softening and finishing at 40°C for 30min, wherein the amount of softening agent is controlled to be 0.5 o.w.f%, the amount of penetrating agent is 5o.w.f%, the pH value of the mixture of softening agent and penetrating agent is 5.0, then take it out and dry it to constant weight at 60°C to obtain wool keratin modified pure cotton fabric.

Comparative example 3,

This softening process comprises the steps:

1) Ultrasonically treat the pure cotton fabric at 80°C and 240W for 0.5h to obtain the pure cotton fabric after ultrasonic treatment, observe the pure cotton fabric after ultrasonic treatment through a metallographic microscope, and find that many smaller pits are formed on the surface, The structure is fluffy, and there is no fiber breakage in pure cotton fabrics;

2) The pure cotton fabric after the ultrasonic treatment is immersed in the wool keratin solution with a mass fraction of 30% according to the bath ratio of 1:20 for modification treatment, wherein the temperature of the modification treatment is 20°C and the time is 40min. Then clamp the four corners of the taken out pure cotton fabric with clips, lay it horizontally, drain the water in an environment of 20°C, and finally dry it to a constant weight at 60°C to obtain a modified pure cotton fabric;

3) Soak the modified pure cotton fabric in the mixture of softener and penetrant at a bath ratio of 1:10, and soften and finish it at 40°C for 30 minutes, wherein the amount of softener is controlled at 0.5o.w.f%. The dosage is 5o.w.f%, the pH value of the mixture of softening agent and penetrating agent is 5.0, and then taken out and dried to constant weight at 60°C to obtain wool keratin modified pure cotton fabric.

The performance test of the wool keratin modified cotton fabric prepared by the above-mentioned various examples and comparative examples: the stiffness of the wool keratin modified cotton fabric before and after washing by the fabric stiffness tester LLY-01 The corresponding test results are shown in Table 1 below:

Table 1. Total average flexural stiffness/cm of pure cotton fabrics

Before washing Wash 5 times wash 10 times Example 1 5.67 5.69 5.71 Example 2 5.71 5.74 5.75 Example 3 5.69 5.73 5.76 Comparative example 1 6.39 6.41 6.47 Comparative example 2 6.02 6.08 6.13 Comparative example 3 6.14 6.19 6.24

Can know from table 1: the total average bending rigidity of the wool keratin modified pure cotton fabric in comparative example 1-3 is higher than embodiment 1-3, shows that the wool keratin modified pure cotton fabric processed by softening process of the present invention Cotton fabrics have better softness, and after washing 5 times and 10 times with water, the total average flexural stiffness does not change much, that is, the softness does not change much; while the wool keratin modified pure cotton in Comparative Examples 1-3 After the fabric is washed 5 times and washed 10 times, the total average flexural stiffness changes greatly, and the increase is relatively high, that is, the softness decreases greatly.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims (7)

1. a kind of wool keratin is modified the soft technique of pure cotton fabric, include the following steps：

1）By pure cotton fabric under 75-85 DEG C, 235-245W ultrasonication 0.5-0.8h, obtain the pure cotton after ultrasonication Fabric；

2）Pure cotton fabric after ultrasonication is impregnated in the wool keratin solution that mass fraction is 30-35% and is changed Property processing, the temperature of the modification is 45-55 DEG C, the time is 20 ~ 30min, further takes out drying, obtains modified pure cotton Fabric；

3）Modified pure cotton fabric is impregnated in the mixed liquor of softening agent and bleeding agent and carries out soft finish, is further taken out dry Dry, the wool keratin for obtaining softness is modified pure cotton fabric, the dosage of softening agent in the mixed liquor of the softening agent and bleeding agent For 0.5o.w.f %~1.0o.w.f %, the dosage of bleeding agent is 5.0 o.w.f %-5.5 o.w.f %, the softening agent and is oozed The pH value of the mixed liquor of saturating agent is 5.0~6.0, and the temperature of the soft finish is 40-45 DEG C, the time is 20~30min.

2. softness technique according to claim 1, it is characterised in that：Step 1）In, pure cotton fabric is impregnated in water simultaneously The ultrasonication 0.5h under 80 DEG C, 240W, obtains the pure cotton fabric after ultrasonication.

3. softness technique according to claim 1 or 2, it is characterised in that：Step 2）In, the temperature of the drying process For 55-60 DEG C；

The bath raio of pure cotton fabric and the wool keratin solution after the ultrasonication is 1：20-30.

4. softness technique according to claim 3, it is characterised in that：Step 2）In, further include to take out before the drying Pure cotton fabric the step of draining moisture at 20-25 DEG C.

5. softness technique according to claim 1 or 2, it is characterised in that：Step 3）In, the temperature of the drying process is 60~80℃。

6. softness technique according to claim 1 or 2, it is characterised in that：Step 3）In, the modified pure cotton fabric With the bath raio 1 of the softening agent and the mixed liquor of bleeding agent：（10~20）.

7. the wool keratin that the soft technique any one of a kind of claim 1-6 is prepared is modified pure cotton fabric.