CN117344539A - A kind of fluorine-free three-proof fabric and its preparation method and application - Google Patents

Abstract

The invention relates to the technical field of environment-friendly fabrics, in particular to a fluorine-free three-proofing fabric, and a preparation method and application thereof. The PM-3888 fluorine-free waterproof agent is adopted in the invention, the main chain end group of the PM-3888 fluorine-free waterproof agent is provided with a strong hydrophobic group and a special supermolecular structure, the whole molecule is polar, the surface of the fabric treated by the finishing liquid is provided with a layer of uniform and compact protective film, the fabric has excellent and durable water-repellent effect, and the fabric has strong rejection to nonpolar stains, so that the fabric has waterproof and antifouling performances. The preparation method adopts a dipping and bundling mode to finish in the finishing process, so that finishing liquid is uniformly distributed at any place of the fabric, and compared with a coating method, the method has little influence on the air permeability of the fabric. The fluorine-free waterproof agent adopted by the invention belongs to an environment-friendly finishing agent, and does not generate any biologically undegradable harmful substances such as perfluorooctanoic acid, perfluorooctane sulfonic acid and the like in the using process, thereby being harmless to the health of human bodies and the environment.

Description

A kind of fluorine-free three-proof fabric and its preparation method and application

Technical field

The invention relates to the technical field of environmentally friendly fabrics, and in particular to a fluorine-free three-proof fabric and its preparation method and application.

Background technique

With the improvement of people's living standards, people's performance requirements for fabrics are also getting higher and higher. Take the application of fluorine-free three-proof fabrics to shoe materials as an example. In addition to providing good comfort, the fabrics must also give the shoe materials excellent functionality. Currently, the three-proof functions of shoe fabrics refer to good waterproof, dustproof, and easy decontamination properties. Examples of usage scenarios: For example, on outdoor lawns, shoe materials need to be resistant to grass stains and fine dust; in rainy weather, since rainwater will penetrate into the shoes due to the siphon effect, the shoe materials need to be waterproof and waterproof. Siphon performance; in addition, in daily life, the upper may be stained with liquid stains, pigment stains, food stains, etc. If not cleaned in time after contamination, the stains will penetrate into the upper and be difficult to clean, thus affecting the aesthetics and durability of the upper. At this time, the shoe material is required to be anti-fouling.

Currently, there are usually two methods for waterproofing and antifouling fabrics: the first is the coating method, which uses a coating agent to form a thin film on the surface of the fabric to prevent water or foreign stains from infiltrating into the fabric. Among them, the use of coatings to treat fabrics to be waterproof and anti-fouling will have a great impact on their breathability. For example, the coating method is used for waterproof and antifouling finishing on fabrics such as shoes and clothing. The film on the surface of the fabric will restrict the circulation of air and cause great discomfort to people; the second is to use fluorine-containing finishing agents. , the fabric has excellent waterproof and antifouling properties after being padded with finishing liquid, and does not affect the breathability of the fabric. However, fluorine-containing finishing agents will produce biodegradable harmful substances during the use process, which is harmful to human health and Living environment has a great impact.

Based on this, the inventor studied and proposed this case.

Contents of the invention

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and obtained by the structures particularly pointed out in the description and the accompanying drawings.

The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a fluorine-free three-proof fabric and its preparation method and application.

In order to achieve the above objects, the technical solution of the present invention is: a preparation method of fluorine-free three-proof fabric, including the following steps

Step 1: Take samples and prepare fabrics;

Step 2: Degreasing process, use a ratio of degreasing agent 5-10g/L and dispersant 3%-7% to degreasing the fabric, the temperature is 20-60°C, and the processing time is 30-60 minutes;

Step 3: Cleaning process, use soaping agent to fully clean the fabric to remove residues on the surface of the fabric. After cleaning, use observation tools to check whether the residues on the surface of the fabric have been removed;

Step 4: Configure the fluorine-free three-proof finishing liquid. Use a fluorine-free waterproofing agent and an anti-dry stain and easy-to-remove agent according to the corresponding proportions to make the finishing liquid;

The proportion of fluorine-free three-proof finishing liquid is: 80-90% water, 10-15% fluorine-free waterproofing agent, 2-5% anti-dry stain and easy stain removal agent are mixed to obtain the finishing liquid; when mixing , the water temperature should be normal temperature, and the water temperature should be less than 40℃;

Step 5: Waterproof and antifouling finishing. Use the padding method to perform waterproofing and antifouling treatment on the fabric. The fabric is smoothly passed around multiple guide rollers and soaked with the finishing solution. Then, the excess solution is squeezed out through the pressure roller and Make the solution evenly distributed on the fabric;

Step 6: Drying and shaping, stretch and fix the finished fabric in the tenter and enter the oven for drying. The temperature of the oven is 140-180°C, and the drying time is 2-8 minutes;

Step 7: Rewinding, wind the finished fabric onto the rolling roller for storage.

In some embodiments, the fluorine-free waterproofing agent is PM-3888 fluorine-free waterproofing agent produced by 3M Company of the United States.

In some embodiments, the anti-dry stain and easy stain removal agent is PM-1700 anti-dry stain and easy stain remover produced by 3M Company in the United States.

In some embodiments, the padding method uses one dip and one dyeing or two dips and two dyeing.

In some embodiments, the fabric is a warp-knitted fabric, a weft-knitted fabric, a woven fabric, or a woven fabric.

In some embodiments, the material of the fabric is polyester, acrylic, polypropylene, spandex, non-woven fabric, composite mesh, canvas or four-way elastic fabric.

In some embodiments, in step two of the degreasing process, the fabric is degreased using a ratio of 8 g/L degreasing agent and 5% dispersing agent, the temperature is 60°C, and the processing time is 60 minutes.

In some embodiments, in step two of the degreasing process, the fabric is degreased using a ratio of degreasing agent 9g/L and dispersant 6%, the temperature is 55°C, and the processing time is 50 minutes.

A fluorine-free three-proof fabric is made by the above preparation method. At the same time, the above-mentioned fluorine-free three-proof fabrics can be applied to clothing, shoe uppers, bedding, curtains or bags.

By adopting the above technical solution, the beneficial effects of the present invention are:

1. PM-3888 fluorine-free waterproofing agent is used in the present invention. Its main chain end group has strong hydrophobic groups and a special supramolecular structure. The entire molecule is polar. The surface of the fabric treated with the finishing liquid has a layer of The uniform and dense protective film exhibits excellent and durable water-repellent effects and is highly repellent to non-polar stains, making the fabric waterproof and anti-fouling.

2. The preparation method of the present invention adopts the method of immersing and pinning during the finishing process, so that the finishing liquid is evenly distributed anywhere on the fabric, and has little effect on the breathability of the fabric compared with the coating method.

3. The fluorine-free waterproofing agent used in the present invention is an environmentally friendly finishing agent. During use, it will not produce any biodegradable harmful substances such as perfluorooctanoic acid and perfluorooctane sulfonate, and is harmless to human health and environmental safety. Harmful.

It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and do not limit the present disclosure.

Undoubtedly, these and other objects of the present invention will become more apparent in the following detailed description of the preferred embodiments described in various figures and drawings.

In order to make the above and other objects, features and advantages of the present invention more clearly understood, one or several preferred embodiments are described in detail below along with the accompanying drawings.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation of the present invention.

In the drawings, the drawings are schematic and not necessarily drawn to actual scale.

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings needed to describe the embodiments or the prior art. Obviously, the drawings in the following description are only These are one or several embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on such drawings without exerting creative efforts.

Figure 1 is a simple flow chart of a method for preparing a fluorine-free three-proof fabric according to some embodiments of the present invention;

Figure 2 is a simple structural schematic diagram of the traction and cooperation between the fabric and the equipment during the preparation of a fluorine-free three-proof fabric preparation method according to some embodiments of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but are not used to limit the present invention.

In addition, in the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" ", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings , is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

In the present invention, unless otherwise clearly stated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated into one; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection between two elements or the interaction between two elements. However, indicating direct connection means that the connection relationship between the two connected bodies is not established through a transition structure, but is only connected through a connecting structure to form a whole. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly stated and limited, a first feature being "on" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. touch. In the description of this specification, reference to the terms "one embodiment," "some embodiments," "an example," "specific examples," or "some examples" or the like means that specific features are described in connection with the embodiment or example. , structures, materials or features are included in at least one embodiment or example of the invention. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to Figures 1 and 2, Figure 1 is a simple flow chart of a method for preparing a fluorine-free three-proof fabric according to some embodiments of the present invention. Figure 2 shows a preparation method for a fluorine-free three-proof fabric according to some embodiments of the present invention. A simple structural diagram of the traction cooperation between fabric and equipment.

According to some embodiments of the invention, the invention provides a method for preparing fluorine-free three-proof fabric, which includes the following steps:

Step 1: Take samples and prepare fabrics;

Step 2: Degreasing process, use a ratio of degreasing agent 5-10g/L and dispersant 3%-7% to degreasing the fabric, the temperature is 20-60°C, and the processing time is 30-60 minutes;

Step 3: Cleaning process, use soaping agent to fully clean the fabric to remove residues on the surface of the fabric. After cleaning, use observation tools to check whether the residues on the surface of the fabric have been removed;

Step 4: Configure the fluorine-free three-proof finishing liquid. Use a fluorine-free waterproofing agent and an anti-dry stain and easy-to-remove agent according to the corresponding proportions to make the finishing liquid;

The proportion of fluorine-free three-proof finishing liquid is: 80-90% water, 10-15% fluorine-free waterproofing agent, 2-5% anti-dry stain and easy stain removal agent are mixed to obtain the finishing liquid; when mixing , the water temperature should be normal temperature, and the water temperature should be less than 40℃;

Step 5: Waterproof and antifouling finishing. Use the padding method to perform waterproofing and antifouling treatment on the fabric. The fabric is smoothly passed around multiple guide rollers and soaked with the finishing solution. Then, the excess solution is squeezed out through the pressure roller and Make the solution evenly distributed on the fabric;

Step 6: Drying and shaping, stretch and fix the finished fabric in the tenter and enter the oven for drying. The temperature of the oven is 140-180°C, and the drying time is 2-8 minutes;

Step 7: Rewinding, wind the finished fabric onto the rolling roller for storage.

According to some embodiments of the present invention, optionally, the fluorine-free waterproofing agent is PM-3888 fluorine-free waterproofing agent produced by 3M Company of the United States.

According to some embodiments of the present invention, optionally, the anti-dry stain and easy-to-remove agent is PM-1700, an anti-dry stain and easy-to-remove agent produced by 3M Company in the United States.

According to some embodiments of the present invention, optionally, the padding method adopts one dip and one dyeing or two dip and two dyeing.

According to some embodiments of the present invention, optionally, the fabric is warp knitted fabric, weft knitted fabric, woven fabric or woven fabric.

According to some embodiments of the present invention, optionally, the material of the fabric is polyester, acrylic, polypropylene, spandex, non-woven fabric, composite mesh, canvas or four-sided stretch fabric.

According to some embodiments of the present invention, optionally, in step 2 of the degreasing process, the fabric is degreased using a ratio of 8g/L degreasing agent and 5% dispersing agent. The temperature is 60°C and the processing time is 60 minutes. .

According to some embodiments of the present invention, optionally, in step 2 of the degreasing process, the fabric is degreased using a ratio of degreasing agent 9g/L and dispersant 6%, the temperature is 55°C, and the processing time is 50 minutes. .

When testing fabrics, Li Ning's LN-57 and LN-58 test methods are used to test the water-repellent and anti-siphon performance. The specific test methods are as follows:

Water repellent performance test:

1) Take 3 samples of 180mm×180mm from the same fabric.

2) Debug the sample under standard atmospheric conditions for 24 hours, then clamp it face up with a sample holder and place it on the support so that the warp direction of the fabric is parallel to the direction of the water flow.

3) Pour 250ml of water into the funnel quickly and steadily so that the water can be sprayed continuously.

4) When the water spray stops, quickly remove the sample holder, turn the fabric face down, and then gently tap the fabric, then observe the degree of wetting on the fabric surface, and evaluate the waterproofness after testing the above fabrics. Splash level.

Static anti-siphon performance test:

1) Cut a sample of 76mm×25mm in the longitude and latitudinal directions of the same sample.

2) Add water with red ink into the water tank of the anti-siphon tester, and use a thin marker to draw three lines on the sample as marks. Mark 1 is 13mm from the bottom sample. This line is the distance between the sample and the solution. Contact surface; mark 2 is marked 3mm above mark 1. This line is the standard for whether the sample is qualified or not after half an hour of observation; mark 3 is marked 10mm above mark 1. This line is the standard for sample observation for two hours. Qualification or failure criteria.

3) Hang the marked sample vertically on the anti-siphon measuring instrument, and adjust the height of the sample so that the part of the sample immersed in water is 13mm.

4) After installing the sample, start timing, and observe the rising height of the sample water level after 0.5 hours. If the rising water level exceeds mark 2, the test is over and the sample is unqualified; if it is less than mark 2, continue the test.

5) For samples whose water level does not exceed mark 2, observe the rising height of the sample water level again after 1.5 hours. If it exceeds mark 3, the sample is judged to be unqualified; if it is less than mark 3, the sample is judged to be qualified.

Antifouling performance and standards: my country's standard for stain resistance test methods is: GB/T30159.1-2013 "Detection and Evaluation of Antifouling Performance of Textiles Part 1: Contamination Resistance".

The present invention selects warp knitted sandwich plain polyester fabrics and other fabrics for post-finishing comparison. The comparison fabrics include woven plain polyester fabrics, warp knitted single-sided polyester and spandex fabrics, warp knitted mesh polyester fabrics, and warp knitted double-sided polyester fabrics.

The corresponding test data is as follows:

1. Water-repellent test

After testing, it was observed that the upper surface of the fabric was not wet, but there were ≥3 small water droplets on the surface. From this, according to the standards of Li Ning Company, it can be known that its water-repellent level is level 4, which reaches the water-repellent level of upper materials. qualifying standards.

2. Static anti-siphon test

After 2 hours of experimental testing, the siphon heights of the six sample fabrics were all less than 10mm. Among them, woven plain fabrics and spandex warp-knitted fabrics had siphoning phenomena, but they were still within the test standards.

3. Contamination resistance (level) test

Six types of upper materials were tested for stain resistance (level 3). The results are as follows. It can be seen that the vast majority of fabrics are resistant to solid dirt staining (greater than level 3).

Example 1

This embodiment provides a method for preparing fluorine-free three-proof fabric, which includes the following steps:

Step 1: Take samples and prepare mesh warp-knitted fabric with sandwich structure;

Step 2: Degreasing process, use a ratio of degreasing agent 5g/L and dispersant 3% to degreasing the fabric. The temperature is 60°C and the processing time is 60 minutes;

Step 3: Cleaning process, use soaping agent to fully clean the fabric to remove residues on the surface of the fabric, such as oil stains, surfactants, etc. After cleaning, use a magnifying glass to check whether the residues on the surface of the fabric have been removed. Since the fluorine-free finishing agent has a high degree of cleanliness for the fabrics to be finished, the fabric must be cleaned before fluorine-free finishing to avoid affecting the waterproof effect;

Step 4: Configure the fluorine-free three-proof finishing liquid. Use PM-3888 fluorine-free waterproofing agent produced by 3M Company in the United States and PM-1700, an anti-dry stain and easy-to-remove stain, according to the corresponding proportions to make the finishing liquid;

The proportion of fluorine-free three-proof finishing liquid is: 85% water, 10% fluorine-free waterproofing agent, and 5% anti-dry stain and easy-to-remove agent to obtain the finishing liquid; when mixing, the temperature of the water should be At normal temperature, the water temperature is less than 40°C. Prevent the waterproofing agent from breaking down due to excessive temperature, which will lead to a decrease in the waterproof and antifouling effects of the fabric. Among them, PM-3888 can not only give the fabric excellent waterproof properties but also provide certain anti-fouling properties. PM-1700 can be used as an anti-dry stain protective agent and easy stain removal protective agent, and is washable. Excellent three-proof fabrics can be obtained through simple and efficient processing, which has the advantages of low cost, high efficiency and convenience;

Step 5: Waterproof and antifouling finishing. Use one dip and one dyeing method to waterproof and antifouling the fabric. Smoothly pass the fabric around multiple guide rollers and soak it with the finishing solution, and then squeeze out the excess solution through the pressure roller. And make the solution evenly distributed on the fabric;

Step 6: Drying and shaping, stretch and fix the finished fabric in the tenter and enter the oven for drying. The temperature of the oven is 140°C and dried for 8 minutes;

Step 7: Rewinding, wind the finished fabric onto the rolling roller for storage.

Example 2

This embodiment provides a method for preparing fluorine-free three-proof fabric, which includes the following steps:

Step 1: Take samples and prepare mesh warp-knitted fabric with sandwich structure;

Step 2: Degreasing process, use a ratio of degreasing agent 10g/L and dispersant 7% to degreasing the fabric. The temperature is 20°C and the processing time is 30 minutes;

Step 3: Cleaning process, use soaping agent to fully clean the fabric to remove residues on the surface of the fabric, such as oil stains, surfactants, etc. After cleaning, use a magnifying glass to check whether the residues on the surface of the fabric have been removed. Since the fluorine-free finishing agent has a high degree of cleanliness for the fabrics to be finished, the fabric must be cleaned before fluorine-free finishing to avoid affecting the waterproof effect;

Step 4: Configure the fluorine-free three-proof finishing liquid. Use PM-3888 fluorine-free waterproofing agent produced by 3M Company in the United States and PM-1700, an anti-dry stain and easy-to-remove stain, according to the corresponding proportions to make the finishing liquid;

The proportion of fluorine-free three-proof finishing liquid is: 83% water, 15% fluorine-free waterproofing agent, and 2% anti-dry stain and easy-to-remove agent to obtain the finishing liquid; when mixing, the temperature of the water should be At normal temperature, the water temperature is less than 40°C. Prevent the waterproofing agent from breaking down due to excessive temperature, which will lead to a decrease in the waterproof and antifouling effects of the fabric. Among them, PM-3888 can not only give the fabric excellent waterproof properties but also provide certain anti-fouling properties. PM-1700 can be used as an anti-dry stain protective agent and easy stain removal protective agent, and is washable. Excellent three-proof fabrics can be obtained through simple and efficient processing, which has the advantages of low cost, high efficiency and convenience;

Step 5: Waterproof and antifouling finishing. Use one dip and one dyeing method to waterproof and antifouling the fabric. Smoothly pass the fabric around multiple guide rollers and soak it with the finishing solution, and then squeeze out the excess solution through the pressure roller. And make the solution evenly distributed on the fabric;

Step 6: Drying and shaping, stretch and fix the finished fabric in the tenter and enter the oven for drying. The temperature of the oven is 160°C and dried for 5 minutes;

Step 7: Rewinding, wind the finished fabric onto the rolling roller for storage.

Example 3

This embodiment provides a method for preparing fluorine-free three-proof fabric, which includes the following steps:

Step 1: Take samples and prepare mesh warp-knitted fabric with sandwich structure;

Step 2: Degreasing process, use a ratio of degreasing agent 8g/L and dispersant 5% to degreasing the fabric. The temperature is 60°C and the processing time is 60 minutes;

Step 3: Cleaning process, use soaping agent to fully clean the fabric to remove residues on the surface of the fabric, such as oil stains, surfactants, etc. After cleaning, use a magnifying glass to check whether the residues on the surface of the fabric have been removed. Since the fluorine-free finishing agent has a high degree of cleanliness for the fabrics to be finished, the fabric must be cleaned before fluorine-free finishing to avoid affecting the waterproof effect;

Step 4: Configure the fluorine-free three-proof finishing liquid. Use PM-3888 fluorine-free waterproofing agent produced by 3M Company in the United States and PM-1700, an anti-dry stain and easy-to-remove stain, according to the corresponding proportions to make the finishing liquid;

The proportion of fluorine-free three-proof finishing liquid is: 84% water, 12% fluorine-free waterproofing agent, and 4% anti-dry stain and easy-to-remove agent to obtain the finishing liquid; when mixing, the temperature of the water should be At normal temperature, the water temperature is less than 40°C. Prevent the waterproofing agent from breaking down due to excessive temperature, which will lead to a decrease in the waterproof and antifouling effects of the fabric. Among them, PM-3888 can not only give the fabric excellent waterproof properties but also provide certain anti-fouling properties. PM-1700 can be used as an anti-dry stain protective agent and easy stain removal protective agent, and is washable. Excellent three-proof fabrics can be obtained through simple and efficient processing, which has the advantages of low cost, high efficiency and convenience;

Step 5: Waterproof and antifouling finishing. Use one dip and one dyeing method to waterproof and antifouling the fabric. Smoothly pass the fabric around multiple guide rollers and soak it with the finishing solution, and then squeeze out the excess solution through the pressure roller. And make the solution evenly distributed on the fabric;

Step 6: Drying and shaping, stretch and fix the finished fabric on the tenter machine and enter it into the oven for drying. The temperature of the oven is 150°C and dried for 7 minutes;

Step 7: Rewinding, wind the finished fabric onto the rolling roller for storage.

Example 4

This embodiment provides a method for preparing fluorine-free three-proof fabric, which includes the following steps:

Step 1: Take samples and prepare mesh warp-knitted fabric with sandwich structure;

Step 2: Degreasing process, use a ratio of degreasing agent 9g/L and dispersant 6% to degreasing the fabric. The temperature is 55°C and the processing time is 50 minutes;

Step 3: Cleaning process, use soaping agent to fully clean the fabric to remove residues on the surface of the fabric, such as oil stains, surfactants, etc. After cleaning, use a magnifying glass to check whether the residues on the surface of the fabric have been removed. Since the fluorine-free finishing agent has a high degree of cleanliness for the fabrics to be finished, the fabric must be cleaned before fluorine-free finishing to avoid affecting the waterproof effect;

Step 4: Configure the fluorine-free three-proof finishing liquid. Use PM-3888 fluorine-free waterproofing agent produced by 3M Company in the United States and PM-1700, an anti-dry stain and easy-to-remove stain, according to the corresponding proportions to make the finishing liquid;

The proportion of fluorine-free three-proof finishing liquid is: 84% water, 13% fluorine-free waterproofing agent, and 3% anti-dry stain and easy-to-remove agent to obtain the finishing liquid; when mixing, the temperature of the water should be At normal temperature, the water temperature is less than 40°C. Prevent the waterproofing agent from breaking down due to excessive temperature, which will lead to a decrease in the waterproof and antifouling effects of the fabric. Among them, PM-3888 can not only give the fabric excellent waterproof properties but also provide certain anti-fouling properties. PM-1700 can be used as an anti-dry stain protective agent and easy stain removal protective agent, and is washable. Excellent three-proof fabrics can be obtained through simple and efficient processing, which has the advantages of low cost, high efficiency and convenience;

Step 5: Waterproof and antifouling finishing. Use one dip and one dyeing method to waterproof and antifouling the fabric. Smoothly pass the fabric around multiple guide rollers and soak it with the finishing solution, and then squeeze out the excess solution through the pressure roller. And make the solution evenly distributed on the fabric;

Step 6: Drying and shaping, stretch and fix the finished fabric in the tenter and enter the oven for drying. The temperature of the oven is 170°C and dried for 4 minutes;

Step 7: Rewinding, wind the finished fabric onto the rolling roller for storage.

The fluorine-free three-proof mentioned in the present invention: is a composite technology. The three-proof specifically refers to dust resistance, water resistance, and easy decontamination. The cross-linking technology of hydrocarbon long carbon chain (waterproof + easy to remove dirt) and unique anti-dust group (anti-dust + easy to remove dirt) has high crystallinity and low surface energy; it can waterproof stains and retain oil when releasing oil stains. It can repel dust and resist dust pollution. And the formula does not contain added PFAS* (* means the formula does not contain added perfluoroalkyl or polyfluoroalkyl compounds (PFAS)).

It should be understood that the disclosed embodiments of the present invention are not limited to the specific process steps or materials disclosed herein, but extend to equivalents of such features as would be understood by those of ordinary skill in the relevant art. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

Reference in the specification to "an embodiment" means that a particular feature, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Therefore, appearances of the phrase or "embodiment" in various places throughout the specification are not necessarily all referring to the same embodiment.

Furthermore, the described features or characteristics may be combined in any other suitable manner in one or more embodiments. In the above description, specific details are provided, such as thickness, quantity, etc., to provide a comprehensive understanding of embodiments of the invention. However, those skilled in the relevant art will understand that the present invention may be implemented without one or more of the above specific details or may also be implemented using other methods, components, materials, etc.

Claims (10)

1. The preparation method of the fluorine-free three-proofing fabric is characterized by comprising the following steps of

Step one: sampling, and preparing a fabric;

step two: an oil removal procedure, in which oil removal treatment is carried out on the fabric by using a ratio of 5-10g/L of an oil removal agent to 3% -7% of a dispersing agent, wherein the temperature is 20-60 ℃ and the treatment time is 30-60min;

step three: a cleaning step of sufficiently cleaning the fabric by using a soaping agent to remove residues on the surface of the fabric, and checking whether the residues on the surface of the fabric are cleaned by using an observation tool after cleaning;

step four: preparing a fluorine-free three-proofing finishing liquid, wherein the finishing liquid is prepared from a fluorine-free waterproof agent and a dry-dirt-preventing soil release agent according to corresponding proportions;

the fluorine-free three-proofing finishing liquid comprises the following components: 80-90% of water, 10-15% of fluorine-free waterproof agent and 2-5% of dry-dirt-preventing detergent are mixed to obtain finishing liquid; when mixing, the temperature of water should be normal temperature, and the temperature of water is less than 40 ℃;

step five: the fabric is subjected to waterproof and antifouling treatment by adopting a padding method, the fabric is smoothly wound around a plurality of cloth guide rollers and is soaked by finishing liquid, and then redundant solution is extruded out by a compression roller, so that the solution is uniformly distributed on the fabric;

step six: drying and shaping, namely stretching and fixing the finished fabric in a stenter, and drying in an oven at 140-180 ℃ for 2-8min;

step seven: and (5) winding, namely winding the finished fabric on a cloth roller for storage.

2. The method for preparing a fluorine-free tri-proof fabric according to claim 1, wherein the fluorine-free waterproof agent is PM-3888 fluorine-free waterproof agent.

3. The method for preparing the fluorine-free three-proofing fabric according to claim 1, wherein the dry-proofing soil-release agent is PM-1700 dry-proofing soil-release agent.

4. The method for preparing the fluorine-free three-proofing fabric according to claim 1, wherein the padding method adopts one-dipping one-dyeing or two-dipping two-dyeing.

5. The method for producing a fluorine-free tri-proof fabric according to claim 1, wherein the fabric is warp knitted fabric, weft knitted fabric, woven fabric or woven fabric.

6. The method for preparing the fluorine-free three-proofing fabric according to claim 1, wherein the fabric is made of terylene, acrylon, polypropylene, spandex, non-woven fabric, composite mesh, canvas or four-sided elastic fabric.

7. The method for preparing the fluorine-free three-proofing fabric according to claim 1, wherein in the second deoiling step, the fabric is deoiled by using a ratio of 8g/L of deoiling agent to 5% of dispersing agent, and the temperature is 60 ℃ and the treatment time is 60min.

8. The method for preparing the fluorine-free three-proofing fabric according to claim 1, wherein in the second deoiling step, the fabric is deoiled by using a ratio of 9g/L of deoiling agent and 6% of dispersing agent, the temperature is 55 ℃, and the treatment time is 50min.

9. A fluorine-free tri-proof fabric, characterized in that the fluorine-free tri-proof fabric is manufactured by the manufacturing method of the fluorine-free tri-proof fabric according to any one of claims 1-8.

10. The fluorine-free three-proofing fabric, which is characterized in that the fluorine-free three-proofing fabric is applied to clothing, vamps, bedding, curtains or bags.