CN115652643A - Ramie textile finishing agent, finishing method and application - Google Patents
Ramie textile finishing agent, finishing method and application Download PDFInfo
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- CN115652643A CN115652643A CN202211372027.4A CN202211372027A CN115652643A CN 115652643 A CN115652643 A CN 115652643A CN 202211372027 A CN202211372027 A CN 202211372027A CN 115652643 A CN115652643 A CN 115652643A
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Abstract
The invention discloses a ramie textile finishing agent, a finishing method and application, and relates to the technical field of textile finishing. The ramie textile finishing agent comprises the following components in parts by weight: 0.2-5 parts of pectinase; 0.1-0.5 parts of metal salt; 0.1-5 parts of nonionic surfactant. The ramie textile treated by the finishing agent for ramie textiles can reduce the hairiness length of the surface of the ramie textile and the compression ratio work of the ramie textile, so that the scratchiness of the ramie textile is obviously reduced, the finishing agent for ramie textiles has small influence on the structure and the breaking strength of the ramie textile, and the loss rate of the breaking strength is lower than about 10 percent after the treatment.
Description
Technical Field
The invention relates to the technical field of textile finishing, in particular to a ramie textile finishing agent, a finishing method and application.
Background
The ramie fabric takes natural cellulose fiber as a raw material, has wild and natural style and excellent fabric performance, and has the characteristics of stiffness, smoothness, coolness, air permeability, portability and antibiosis. However, because of the large fiber fineness, the large rigidity, the hardness and the stiffness, the poor cohesion, the loose yarn structure and the more filoplume of the ramie, the fabric can cause prickling and itching when being worn next to the skin, and especially people with high garment fabric sensitivity can feel uncomfortable when wearing the ramie, the prickling feeling limits the application of the ramie product in various fields of clothes, home textiles, medical treatment and the like, and the high-end product and the market expansion are influenced.
The scratchiness problem of ramie is troubling the practitioners of ramie, and in recent years, many researches on the scratchiness of ramie have been carried out and remarkable progress has been made. The current main methods for solving the itching feeling are realized by reducing the number and the length of the hairs on the surface of the fabric, reducing the rigidity of the hairs of the fabric, enabling the protruded hairs to be blunt from thick and sharp to thin and soft and the like. For example, water washing and sand washing cause fatigue of ramie fibers through friction or impact of external force, reduce the bending rigidity, but generate more new hairiness; the singeing, clipping and fuzzing-down method may cause the bending rigidity to be improved while shortening the fuzz, but the high temperature during singeing causes damage to the fabric main body, makes the fiber brittle and hard to handle. The softening agent is used, so that a layer of film can be attached to the surface of the ramie fibers, the free movement among the fibers is increased, the impact of the fibers on the skin surface of a human body is reduced, the scratchiness of the ramie fabric can be effectively reduced, and the excellent air permeability and moisture permeability of the ramie fabric can be damaged. While the use of various cellulose solvents such as alkali, liquid ammonia, N-methylmorpholine-N-oxide and various ion pair cellulose solvents can reduce the stiffness of the cellulose, most of them are costly, have a large pollution and have a large loss of fabric strength. At present, a softener is utilized to soften fabrics, then the softener is added for treatment, then washing and acid washing neutralization are carried out, and finally mechanical friction is carried out. Alkali treatment has also been used to finish ramie fabrics, but this method is inexpensive and effective, but is very polluting.
The cellulase is a clean, efficient and specific biological agent and can hydrolyze cellulose, so the crystallinity of ramie fibers can be reduced by using the cellulase, the aim of reducing rigidity is fulfilled, and the reduction of itching feeling by using the cellulase treatment is one of the main development directions at present, but the improper treatment of the cellulase can cause negative effects on the performance of the fabric, such as the damage, strength reduction and brittleness of the fabric structure. Therefore, the use of cellulase necessitates strict process control, thereby balancing the reduction in scratchiness and the loss of strength.
At present, a cellulase preparation, an enzyme washing activator and a method for post-finishing ramie fabrics are developed, wherein the cellulase and the enzyme activator are used together, and then softening treatment is carried out, so that the tearing strength and the wrinkle recovery angle of the finished ramie fabric can be improved, and the stiffness and the drape coefficient are reduced, but the method can inevitably damage the structure of the ramie fabrics. Still others adopt a combined finishing method to reduce the scratchiness, for example, someone firstly uses cellulase to treat, and then uses aqueous polyurethane to pad or dip for 2 times, so as to achieve the effects of reducing the scratchiness of ramie fabric, improving the elasticity of fiber, and simultaneously leading the breaking strength loss rate of the fabric to be within 15%. The process needs 2-3 steps of treatment, the treatment time is 52-121 min, the process is complicated, and the effect is not good enough. And (2) treating the linen fabric by using cellulase, then treating the linen fabric by using nitrogen as gas, and finally treating the linen fabric in ionic liquid of cyclopentane tetracarboxylic dianhydride and olive pit extract to finally prepare the anti-itching and anti-wrinkle linen fabric, wherein the scheme needs 3 steps of treatment, takes 12.67-25 h, and not only is the process complicated, but also the treatment time is long. The method uses the cellulase to treat the ramie textile, and can damage cellulose which is a main structural component of the ramie textile to a certain extent, so that the cellulase treatment control difficulty is high, the fabric is easy to be over-treated, the structure of the ramie textile is damaged, the strength is greatly reduced, the wearability is reduced, and the value is reduced.
Therefore, a new ramie textile finishing agent and a new ramie textile finishing method are needed to solve the above problems.
Disclosure of Invention
The first technical problem to be solved by the invention is as follows:
provides a ramie textile finishing agent.
The second technical problem to be solved by the invention is:
provides a method for finishing textiles by using the ramie textile finishing agent.
The third technical problem to be solved by the invention is:
the application of the ramie textile finishing agent is provided.
In order to solve the first technical problem, the invention adopts the technical scheme that:
the ramie textile finishing agent comprises the following components in parts by weight:
0.2-5 parts of pectinase;
0.1-0.5 parts of metal salt;
0.1-5 parts of nonionic surfactant.
According to the embodiment of the invention, one of the technical solutions has at least one of the following advantages or beneficial effects:
1. a small amount of colloid components, including pectin, cellulose, lignin and hemicellulose, still remain in the ramie after degumming, so that the ramie can be bonded together, and the ramie is relatively stiff. Pectin is polysaccharide polymerized by galacturonic acid with different esterification degrees through alpha-1,4 glycosidic bond, often has side chains consisting of rhamnose, arabinose, galactose, xylose and the like, and free carboxyl is combined with metal ions such as calcium, potassium and the like to form water-insoluble pectate. Pectinase is a generic term for a group of enzymes that synergistically break down pectic substances, including at least protopectinase, polygalacturonase, pectin lyase, and pectinesterase. The method uses pectinase to remove residual colloid components among ramie cells, so that the ramie cells are not bonded with each other. The method of the invention can not damage the main structure of cellulose and the strength of the cellulose, and can soften ramie and reduce the prickle feeling.
2. In the process of treating the ramie textile by pectinase, the metal salt and the nonionic surfactant are combined with each other, so that on one hand, the structure of enzyme protein can be protected to be stable, fatty acid in water can be removed, and metal ions such as calcium, magnesium and the like in water can be synergistically neutralized, on the other hand, the metal salt and the nonionic surfactant can be used as an actual catalyst to catalyze and improve the activity of the pectinase, so that the hairiness length of the surface of the ramie textile treated by the finishing agent for ramie textile can be reduced, the compression ratio function of the ramie textile can be reduced, the prickling feeling of the ramie textile can be further remarkably reduced, the influence of the finishing agent for ramie textile on the structure and the breaking strength of the ramie textile is small, and the loss rate of the breaking strength can be lower than about 10% after the treatment.
According to one embodiment of the invention, the ramie textile finishing agent comprises the following components in parts by weight:
0.2-2 parts of pectinase;
0.1-0.3 parts of metal salt;
0.1-2 parts of nonionic surfactant.
According to one embodiment of the invention, the ramie textile finishing agent further comprises the following components: a vinyl-containing compound.
The ramie is stiff for at least two reasons:
as mentioned above, a small amount of colloid components, including pectin, cellulose, lignin and hemicellulose, remain after degumming of ramie, and can bond ramie together, so that ramie is relatively stiff.
Secondly, because the ramie fibers have the characteristic of small extensibility, the ramie fibers are difficult to extend, and the ramie fibers are stiff and itchy. In order to solve the second problem, the ramie textile finishing agent is added with a compound containing vinyl, so that under an alkaline condition, ramie fibers can be crosslinked with the compound containing vinyl, ether bonds are formed through Michael addition reaction, and the crosslinked ramie fibers can present a net-shaped fiber structure, so that the ramie fibers can be extended, and the ramie fibers are flexible, thereby fundamentally solving the problem of stiff and itchy ramie.
According to one embodiment of the invention, the vinyl-containing compound can be a component of the ramie textile finish or can be a separate component. In practice, the ramie textile may be finished with the ramie textile finishing agent and subsequently treated further with a vinyl-containing compound.
According to one embodiment of the invention, the vinyl-containing compound can also be an additional component of the ramie textile finish. In this case, the ramie textile finish will be divided into a component a and a component B.
Wherein the component A comprises the following components in parts by weight:
0.2-5 parts of pectinase;
0.1-0.5 parts of metal salt;
0.1-5 parts of a nonionic surfactant;
wherein the component B comprises the following components in parts by weight:
0.1-5 parts of a vinyl-containing compound.
According to one embodiment of the present invention, the vinyl group-containing compound may be present in an amount of 0.1 to 0.2 parts by weight, 0.2 to 0.3 parts by weight, 0.3 to 0.4 parts by weight, 0.1 to 1 parts by weight, 0.1 to 2 parts by weight, 0.1 to 3 parts by weight, 0.1 to 4 parts by weight, or 0.1 to 5 parts by weight.
According to one embodiment of the present invention, the vinyl-containing compound includes at least one of tetramethyltetravinylcyclotetrasiloxane and vinyltrimethoxysilane.
According to one embodiment of the invention, the pectinase comprises at least one of protopectinase, polygalacturonase, pectin lyase, and pectin esterase.
According to an embodiment of the present invention, the nonionic surfactant includes at least one of polyoxyethylene lauryl ether, polyoxyethylene fatty alcohol, and polyoxyethylene sorbitan fatty acid ester.
In order to solve the second technical problem, the invention adopts the technical scheme that:
a method for finishing textiles by using the ramie textile finishing agent comprises the following steps:
and mixing the ramie textile with the ramie textile finishing agent to obtain the modified ramie textile.
According to the embodiment of the invention, one of the technical solutions has at least one of the following advantages or beneficial effects:
1. after the ramie textile is treated by the method, the handfeel of the ramie textile can be improved, the main structure of the ramie textile is not damaged, and compared with the traditional alkali treatment, the method has the advantages of less chemical materials and simpler process, and is a safe and environment-friendly anti-itching finishing method for the ramie textile.
2. Compared with the finishing method of ramie textiles based on cellulase, the method of the invention not only can avoid the damage to the cellulose of the structural component of the ramie textiles, but also is more convenient and simpler in process, and does not need to pay more attention to whether the structure of the ramie textiles is damaged by excessive finishing agent.
3. Compared with the ramie textile finishing method based on cellulase and polyurethane, the ramie textile finishing method disclosed by the invention is low in use difficulty and small in damage to ramie textiles, and the finishing agent based on cellulase and polyurethane needs a large amount of aqueous polyurethane (40-200 g/L) to carry out two-dipping and two-rolling treatment, so that the ramie textiles cannot be damaged.
According to one embodiment of the present invention, when mixing a ramie textile with the ramie textile finish, the ramie textile finish is a solvent-containing solution and the ramie textile is dipped into the ramie textile finish using a bath ratio of 1.
The appropriate bath ratio can promote the treatment effect of the ramie textile finishing agent on ramie, and the loss rate of the breaking strength of the ramie can be lower than about 10% by treating the ramie by the ramie textile finishing agent.
According to one embodiment of the invention, the pH of the mixed system is maintained between 3 and 8 when the ramie textile is dipped into the ramie textile finish.
According to one embodiment of the invention, the pH of the mixed system is maintained between 3 and 7 when the ramie textile is dipped into the ramie textile finish.
According to one embodiment of the invention, the pH of the mixed system is maintained between 3 and 5 when the ramie textile is dipped into the ramie textile finish.
According to one embodiment of the invention, the ramie textile is immersed in the finishing agent for ramie textile, the temperature of the mixing system being 30 ℃ to 80 ℃.
According to one embodiment of the invention, the ramie textile is immersed in the finishing agent for ramie textile, the temperature of the mixing system being 40 ℃ to 60 ℃.
According to one embodiment of the invention, the ramie textile is immersed in the finishing agent for ramie textile, the temperature of the mixing system being 45 ℃ to 60 ℃.
According to an embodiment of the invention, the method further comprises the steps of: the modified ramie textile is immersed in water at 100-110 ℃.
The method further comprises the steps of: taking out the modified ramie textile immersed in water of 100-120 ℃, drying and immersing in alkali liquor.
According to one embodiment of the present invention, when the vinyl-containing compound is a separate component, the present invention adopts the following technical scheme:
a method for finishing textiles by using the ramie textile finishing agent comprises the following steps:
immersing a ramie textile into the ramie textile finishing agent according to a bath ratio of 1;
immersing the modified ramie textile into an alkaline solution of a compound containing vinyl.
According to one embodiment of the invention, when the vinyl-containing compound is an additional component of the ramie textile finish, the ramie textile finish is divided into a component A and a component B. At this time, the invention adopts the technical scheme that:
the method for finishing the textile by using the ramie textile finishing agent comprises the following steps:
immersing a ramie textile into the component A of the ramie textile finishing agent according to a bath ratio of 1;
and (3) soaking the modified ramie textile into the component B of the ramie textile finishing agent.
In another aspect, the invention also relates to the use of the ramie textile finishing agent in textile processing. Comprising a ramie textile finish as described in example 1 above. The application adopts all technical schemes of the ramie textile finishing agent, so that the ramie textile finishing agent has at least all the beneficial effects brought by the technical schemes of the embodiment.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a graph showing the percent reduction in compression work of treated ramie textiles of examples 1 to 3 and comparative examples 2 to 4;
FIG. 2 is a graph showing the reduction rate of the hairiness of ramie textile treated in examples 1 to 3 and comparative examples 2 to 4;
FIG. 3 is a graph showing the percentage reduction of the compression work of treated ramie textiles of examples 1,4 to 5 and comparative examples 5 to 7;
FIG. 4 is a graph showing the decrease rate of the hairiness length of the treated ramie textile according to examples 1,4 to 5 and 5 to 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of the present invention.
The reagents, methods and equipment adopted by the invention are conventional in the technical field if no special description is given.
In the examples and comparative examples, the ramie textile used was pure ramie plain cloth from Hua Sheng Dongting hemp industries, ltd.
In the examples and comparative examples, pectinase was used which was obtained from Shandong-Long-Kete enzyme preparation, inc.
Example 1
A ramie textile finishing agent comprises the following components in parts by weight:
4 parts of pectinase;
0.01 part of sodium chloride;
and 4 parts of JFC (fatty alcohol-polyoxyethylene ether).
A method for finishing textiles by using the ramie textile finishing agent comprises the following steps:
soaking ramie cloth in ramie textile finishing agent with pH of 4.0 (pH adjusted by Robinson-Briton buffer solution), maintaining at 50 deg.C for 60min, immediately soaking in 100 deg.C hot water for 5min, washing with water, and oven drying at 105 deg.C.
Wherein the bath ratio of the ramie cloth to the ramie textile finishing agent is 1:20.
example 2
Example 2 differs from example 1 in that: the pH values were different. The pH of example 1 was 4.0 and the pH of example 2 was 3.0.
The ramie textile finishing agent comprises the following components in parts by weight:
4 parts of pectinase;
0.01 part of sodium chloride;
and 4 parts of JFC (fatty alcohol-polyoxyethylene ether).
A method for finishing textiles by using the ramie textile finishing agent comprises the following steps:
soaking ramie cloth in ramie textile finishing agent with pH value of 3.0 (pH value adjusted by Robinson-Briton buffer solution), keeping temperature at 50 deg.C for 60min, immediately soaking in 100 deg.C hot water for 5min, washing with water, and oven drying at 105 deg.C.
Wherein the bath ratio of the ramie cloth to the ramie textile finishing agent is 1:20.
example 3
Example 3 differs from example 1 in that: the pH values were different. The pH of example 1 was 4.0 and the pH of example 3 was 5.0.
A ramie textile finishing agent comprises the following components in parts by weight:
4 parts of pectinase;
0.01 part of sodium chloride;
and 4 parts of JFC (fatty alcohol-polyoxyethylene ether).
A method for finishing textiles by using the ramie textile finishing agent comprises the following steps:
soaking ramie cloth in ramie textile finishing agent with pH value of 5.0 (pH value adjusted by Robinson-Briton buffer solution), maintaining at 50 deg.C for 60min, immediately soaking in 100 deg.C hot water for 5min, washing with water, and oven drying at 105 deg.C.
Wherein the bath ratio of the ramie cloth to the ramie textile finishing agent is 1:20.
example 4
Example 4 differs from example 1 in that: the finishing temperatures were different. The finishing temperature for example 1 was 50 ℃ and the finishing temperature for example 4 was 40 ℃.
A ramie textile finishing agent comprises the following components in parts by weight:
4 parts of pectinase;
0.01 part of sodium chloride;
and 4 parts of JFC (fatty alcohol-polyoxyethylene ether).
A method for finishing textiles by using the ramie textile finishing agent comprises the following steps:
soaking ramie cloth in ramie textile finishing agent with pH of 4.0 (pH adjusted by Robinson-Briton buffer solution), maintaining at 40 deg.C for 60min, immediately soaking in 100 deg.C hot water for 5min, washing with water, and oven drying at 105 deg.C.
Wherein the bath ratio of the ramie cloth to the ramie textile finishing agent is 1:20.
example 5
Example 5 differs from example 1 in that: the finishing temperatures were different. The finishing temperature for example 1 was 50 ℃ and the finishing temperature for example 5 was 60 ℃.
A ramie textile finishing agent comprises the following components in parts by weight:
4 parts of pectinase;
0.01 part of sodium chloride;
and 4 parts of JFC (fatty alcohol-polyoxyethylene ether).
A method for finishing textiles by using the ramie textile finishing agent comprises the following steps:
soaking ramie cloth in ramie textile finishing agent with pH value of 4.0 (pH value adjusted by Robinson-Briton buffer solution), keeping the temperature at 60 deg.C for 60min, immediately soaking in 100 deg.C hot water for 5min, washing with water, and drying at 105 deg.C.
Wherein the bath ratio of the ramie cloth to the ramie textile finishing agent is 1:20.
example 6
The ramie textile finishing agent comprises the following components in parts by weight:
4 parts of pectinase;
0.01 part of sodium chloride;
and 4 parts of JFC (fatty alcohol-polyoxyethylene ether).
A method for finishing textiles by using the ramie textile finishing agent comprises the following steps:
soaking ramie cloth in ramie textile finishing agent with pH of 4.0 (pH adjusted by Robinson-Briton buffer solution), maintaining at 50 deg.C for 60min, immediately soaking in 100 deg.C hot water for 5min, and washing with water. The pH of the ramie textile finishing agent is adjusted to 8, and 0.5 part by weight of tetramethyltetravinylcyclotetrasiloxane is added. And soaking the ramie cloth in the ramie textile finishing agent again for 12 hours at room temperature, taking out and drying at 105 ℃.
Wherein the bath ratio of the ramie cloth to the ramie textile finishing agent is 1:20.
example 7
A ramie textile finishing agent comprises the following components in parts by weight:
4 parts of pectinase;
0.01 part of sodium chloride;
and 4 parts of JFC (fatty alcohol-polyoxyethylene ether).
A method for finishing textiles by using the ramie textile finishing agent comprises the following steps:
soaking ramie cloth in ramie textile finishing agent with pH of 4.0 (pH adjusted by Robinson-Briton buffer solution), maintaining at 50 deg.C for 60min, immediately soaking in 100 deg.C hot water for 5min, and washing with water.
Dissolving 0.5 parts by weight of tetramethyltetravinylcyclotetrasiloxane in a solvent to obtain a mixed solution, adjusting the pH of the mixed solution to 8, immersing ramie cloth in the mixed solution, soaking for 12 hours at room temperature, taking out and drying at 105 ℃.
Wherein the bath ratio of the ramie cloth to the ramie textile finishing agent is 1:20.
comparative example 1
The method of textile finishing of comparative example 1 is an alkaline treatment process.
A method for finishing textiles by using the finishing agent comprises the following steps:
immersing the gray fabric into an alkali liquor (the using amount of NaOH is 40% of the mass of the gray fabric, the bath ratio is 1.
Comparative example 2
Comparative example 2 differs from example 1 in that: the pH values were different. The pH of example 1 was 4.0 and the pH of comparative example 2 was 6.0.
A ramie textile finishing agent comprises the following components in parts by weight:
4 parts of pectinase;
0.01 part of sodium chloride;
and 4 parts of JFC (fatty alcohol-polyoxyethylene ether).
A method for finishing textiles by using the ramie textile finishing agent comprises the following steps:
soaking ramie cloth in ramie textile finishing agent with pH value of 6.0 (pH value adjusted by Robinson-Briton buffer solution), keeping temperature at 50 deg.C for 60min, immediately soaking in 100 deg.C hot water for 5min, washing with water, and oven drying at 105 deg.C.
Wherein the bath ratio of the ramie cloth to the ramie textile finishing agent is 1:20.
comparative example 3
Comparative example 3 differs from example 1 in that: the pH values were different. The pH of example 1 was 4.0 and the pH of comparative example 3 was 7.0.
The ramie textile finishing agent comprises the following components in parts by weight:
4 parts of pectinase;
0.01 part of sodium chloride;
and 4 parts of JFC (fatty alcohol-polyoxyethylene ether).
A method for finishing textiles by using the ramie textile finishing agent comprises the following steps:
soaking ramie cloth in ramie textile finishing agent with pH value of 7.0 (pH value adjusted by Robinson-Briton buffer solution), keeping temperature at 50 deg.C for 60min, immediately soaking in 100 deg.C hot water for 5min, washing with water, and oven drying at 105 deg.C.
Wherein the bath ratio of the ramie cloth to the ramie textile finishing agent is 1:20.
comparative example 4
Comparative example 4 differs from example 1 in that: the pH values were different. The pH of example 1 was 4.0 and the pH of comparative example 4 was 8.0.
A ramie textile finishing agent comprises the following components in parts by weight:
4 parts of pectinase;
0.01 part of sodium chloride;
and 4 parts of JFC (fatty alcohol-polyoxyethylene ether).
A method for finishing textiles by using the ramie textile finishing agent comprises the following steps:
soaking ramie cloth in ramie textile finishing agent with pH value of 8.0 (pH value adjusted by Robinson-Briton buffer solution), maintaining at 50 deg.C for 60min, immediately soaking in 100 deg.C hot water for 5min, washing with water, and oven drying at 105 deg.C.
Wherein the bath ratio of the ramie cloth to the ramie textile finishing agent is 1:20.
comparative example 5
Comparative example 5 differs from example 1 in that: the finishing temperatures were different. The finishing temperature for example 1 was 50 ℃ and the finishing temperature for comparative example 5 was 30 ℃.
A ramie textile finishing agent comprises the following components in parts by weight:
4 parts of pectinase;
0.01 part of sodium chloride;
and 4 parts of JFC (fatty alcohol-polyoxyethylene ether).
A method for finishing textiles by using the ramie textile finishing agent comprises the following steps:
soaking ramie cloth in ramie textile finishing agent with pH of 4.0 (pH adjusted by Robinson-Briton buffer solution), maintaining at 30 deg.C for 60min, immediately soaking in 100 deg.C hot water for 5min, washing with water, and oven drying at 105 deg.C.
Wherein the bath ratio of the ramie cloth to the ramie textile finishing agent is 1:20.
comparative example 6
Comparative example 6 differs from example 1 in that: the finishing temperatures were different. The finishing temperature for example 1 was 50 ℃ and the finishing temperature for comparative example 6 was 70 ℃.
The ramie textile finishing agent comprises the following components in parts by weight:
4 parts of pectinase;
0.01 part of sodium chloride;
and 4 parts of JFC (fatty alcohol-polyoxyethylene ether).
A method for finishing textiles by using the ramie textile finishing agent comprises the following steps:
soaking ramie cloth in ramie textile finishing agent with pH of 4.0 (pH adjusted by Robinson-Briton buffer solution), maintaining at 70 deg.C for 60min, immediately soaking in 100 deg.C hot water for 5min, washing with water, and oven drying at 105 deg.C.
Wherein the bath ratio of the ramie cloth to the ramie textile finishing agent is 1:20.
comparative example 7
Comparative example 7 differs from example 1 in that: the finishing temperatures were different. The finishing temperature for example 1 was 50 ℃ and the finishing temperature for comparative example 7 was 80 ℃.
The ramie textile finishing agent comprises the following components in parts by weight:
4 parts of pectinase;
0.01 part of sodium chloride;
and 4 parts of JFC (fatty alcohol-polyoxyethylene ether).
A method for finishing textiles by using the ramie textile finishing agent comprises the following steps:
soaking ramie cloth in ramie textile finishing agent with pH of 4.0 (pH adjusted by Robinson-Briton buffer solution), maintaining at 80 deg.C for 60min, immediately soaking in 100 deg.C hot water for 5min, washing with water, and oven drying at 105 deg.C.
Wherein the bath ratio of the ramie cloth to the ramie textile finishing agent is 1:20.
and (3) performance testing:
taking ramie cloth, the ramie textile treated in the example 1 and the textile treated in the comparative example 1, carrying out the following tests, carrying out air conditioning and sampling according to the determination of the unit length mass and the unit area mass of the woven fabric of the standard GB/T4669-2008 textile, then determining the unit area mass of the ramie textile before and after treatment, and calculating the decrement rate; then, a whiteness tester XT-48B/BN (extensible framework/boron nitride) whiteness tester of Hangzhou research science and technology Limited is adopted to measure whiteness; textile fabric tensile properties according to standard GB/T3923.1-2013 part 1: determination of breaking strength and elongation at break (bar method), sampling and determination of breaking strength. The method is characterized in that a FZ/T30004-2009 ramie fabric scratchiness determination method is used for sampling, a Yuanmao YM-06Z programmed human body scratchiness analysis tester is used for testing the hairiness length and the compression ratio work, an evaluation group is used for evaluating the hand feeling, and the results are shown in Table 1.
TABLE 1
As can be seen from Table 1, the reduction in the work of compression of ramie from 0.198cN to 0.136cN after the conventional alkali treatment (method of comparative example 1) is calculated by the following formula:
the harshness is reduced by 31.31 percent, the breaking strength is reduced from 664.00N to 478.56N, the breaking strength is lost by 27.93 percent, and the hairiness length is reduced by 9.42 percent; the compression ratio of the ramie is reduced to 0.100cN from 0.198cN, the scratchiness is reduced by 49.49%, the breaking strength is reduced to 601.35N, the loss is only 9.44%, and the hairiness length is reduced by 36.84%. Compared with the method of the comparative example 1, the method of the example 1 has better anti-itching effect, less strength loss, and is safer, milder, environment-friendly and less-damaging than the conventional method.
The ramie textiles treated in examples 1 to 3 and comparative examples 2 to 4 were tested for the percentage reduction of the respective compression work, and the test results are shown in fig. 1; the respective hair length reduction rates were tested, and the test results are shown in fig. 2. It can be known from fig. 2-3 that the percentage of reduction in compression ratio work and the rate of reduction in hairiness length are both greatly reduced when the pH is greater than 5.
The ramie textiles treated in the examples 1,4 to 5 and the comparative examples 5 to 7 are tested for the respective percentage reduction of the compression ratio work, and the test result is shown in FIG. 3; the respective hair length reduction rates were tested, and the test results are shown in fig. 4. As can be understood from fig. 3 and 4, both the compression ratio work reduction percentage and the hairiness length reduction rate perform well at temperatures of 40 c to 60 c.
The ramie fabrics and the treated ramie textiles of examples 1 and 6 to 7 were subjected to the following tests, the results of which are shown in Table 2.
TABLE 2
The above description is only an example of the present invention and is not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention as described in the specification of the present invention or directly or indirectly applied to the related technical fields are included in the scope of the present invention.
Claims (10)
1. A ramie textile finishing agent is characterized in that: the paint comprises the following components in parts by weight:
0.2-5 parts of pectinase;
0.1-0.5 parts of metal salt;
0.1-5 parts of nonionic surfactant.
2. The ramie textile finishing agent of claim 1, wherein: the ramie textile finishing agent also comprises the following components: a vinyl-containing compound.
3. The ramie textile finishing agent of claim 2, wherein: the vinyl-containing compound includes at least one of tetramethyltetravinylcyclotetrasiloxane and vinyltrimethoxysilane.
4. The ramie textile finishing agent of claim 1, wherein: the pectinase comprises at least one of protopectinase, polygalacturonase, pectin lyase, and pectin esterase.
5. The ramie textile finishing agent of claim 1, wherein: the nonionic surfactant comprises at least one of polyoxyethylene lauryl ether, fatty alcohol-polyoxyethylene ether and polyoxyethylene sorbitan fatty acid ester.
6. A method for textile finishing with a ramie textile finishing agent according to any of claims 1 to 5, characterized in that: the method comprises the following steps:
and mixing the ramie textile with the ramie textile finishing agent to obtain the modified ramie textile.
7. The method of claim 6, wherein: and when the ramie textile is immersed into the ramie textile finishing agent, the pH value of the mixed system is kept between 3 and 5.
8. The method of claim 6, wherein: the method further comprises the steps of: the modified ramie textile is immersed in water at 100-110 ℃.
9. The method of claim 8, wherein: the method further comprises the steps of: taking out the modified ramie textile immersed in water of 100-110 ℃, drying and immersing in alkali liquor.
10. Use of a ramie textile finish according to any one of claims 1 to 5 in textile processing.
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