CN116100836A - A kind of preparation technology of film-coated fabric adopting stripping method - Google Patents

Abstract

The invention discloses a preparation process of a laminating fabric adopting a stripping mode, which comprises the following steps: preparing an active adhesive layer; respectively treating the substrate cloth and the organosilicon film by adopting a plasma technology to respectively obtain a pretreated substrate cloth and a pretreated organosilicon film; and (3) gluing the active bonding layer to the surface of the pretreated base material cloth by adopting a roller pattern, forming, adopting a laser to scan the surface of the bonding layer by adopting a laser to obtain the three-dimensional pretreated base material cloth with a micropore array, attaching a pretreated organic silicon film on the other side of the bonding layer, and adopting an upper press roller and a lower press roller to carry out heating and pressing, wherein the temperature of the upper press roller is 70-80 ℃, so as to obtain the laminated fabric. The invention has the advantages of low hot-pressing temperature, balanced heat-insulating performance and air permeability, stable air and moisture permeability effect and high product consistency, and the pore diameter and the distribution uniformity of the air holes can be precisely controlled by corresponding parameters.

Description

A kind of preparation technology of film-coated fabric adopting stripping method

technical field

The invention relates to the technical field of film-coated fabrics, in particular to a process for preparing film-covered fabrics in a stripping manner.

Background technique

With the improvement of living standards, people have increasingly diversified functional requirements for fabrics. Laminated fabrics are a relatively new type of fabrics, which have windproof properties and are used to manufacture functional clothing such as windproof clothing.

At present, in addition to the selection of film materials, the preparation process of fabric-film is also a problem to be solved in the research and development of fabrics. The traditional thermal bonding method is used, and the adhesive needs to be softened by heating during bonding. However, the heating process not only requires It consumes a large amount of electric energy, and the colloid produces volatile gases that are harmful to the human body and the environment after being heated at a high temperature, which does not meet environmental protection requirements. In addition, the existing film-coated fabrics compound the polymer film on the fabric layer, and utilize the polymer film to block the pores of the fabric layer to play a windproof effect, but the air permeability of this film-coated fabric is very poor.

At present, in order to increase the air permeability of the coated fabric, a polymer film with a microporous structure is used to balance the windproof performance and air permeability. However, the polymer film with a microporous structure also has a thermal bonding temperature during the thermal bonding process. At the same time, it is difficult to control the uniformity of micropore distribution, which leads to the problem that the breathability of the film-coated fabric is difficult to maintain stability.

Contents of the invention

The object of the present invention is to solve the shortcomings in the prior art, and propose a method for preparing film-coated fabrics in a stripping manner.

A preparation process for film-coated fabrics in a stripping manner, comprising the steps of:

S1. By weight, 40-60 parts of polyether triol MN-500, 20-40 parts of polyether triol EP-330N, 1-2 parts of 4,4'-methylenebis(2-chloroaniline ), 1-2 parts of foam stabilizer, 5-12 parts of polyoxyethylene glyceryl ether, 0.1-1 part of catalyst, 1-10 parts of water are added to the mixing tank, stirred at a temperature of 30-50 °C, and 20-60 One part of isocyanate prepolymer continues to stir for 10-60s to obtain an active adhesive layer;

S2. The substrate fabric and the organic silicon film are respectively treated with plasma technology. During the treatment process, the normal pressure DC glow discharge is used to obtain the pretreated substrate fabric and the pretreated organic silicon film respectively;

S3. Glue the active adhesive layer to the surface of the pretreated substrate cloth with a roller pattern, shape it, and use a laser to scan the surface of the adhesive layer to obtain a three-dimensional pretreated substrate cloth with a microhole array, and then place it on the adhesive layer. A pre-treated silicone film is attached to one side, and the upper pressing roller and the lower pressing roller are used to heat and press, wherein the temperature of the upper pressing roller is 70-80°C to obtain a coated fabric.

Preferably, in S1, the catalyst is an organotin catalyst, preferably dibutyltin dilaurate.

Preferably, in S1, the foam stabilizer is foam stabilizer L2580.

Preferably, in S2, during the discharge process, the discharge power is 85-110W, the electrode plate spacing is 2-4mm, the processing speed is 60-80mm/min, the processing time is 2-4min, and the working gas includes helium and oxygen, The flow ratio of helium to oxygen is 10:1-4ml/min.

Preferably, in S2, the organosilicon film is an organosilicon PDMS film with a thickness of 50 μm.

Preferably, in S2, the base material fabric is one of polyester, cotton and cotton.

Preferably, in S3, the amount of sizing agent on the surface of the pretreated substrate cloth is 5-12g/m ² .

Preferably, in S3, the wavelength of the laser is 1064 nm, and the pulse energy is 0.5 mJ.

A film-coated fabric is made by adopting the preparation process of the film-coated fabric.

Technical effect of the present invention is as follows:

In the present invention, the isocyanate group reacts with water to generate urea bonds and carbon dioxide, and the active adhesive layer formed by cooperating with L2580 foam stabilizer and polyoxyethylene glycerol ether occupies a spatial position due to the large number of void structures between the flexible chains of macromolecular polyether. Large, the active adhesive layer formed is not only extremely flexible, but also glued to the surface of the pretreated substrate fabric. Because the plasma treatment can effectively activate the surface of the substrate fabric, the two have good affinity. After molding Laser scanning on the surface of the adhesive layer can effectively increase the surface roughness of the adhesive layer. It is further combined with the pretreated silicone film and subjected to hot rolling. Under the premise of effectively reducing the rolling temperature, the mutual bonding strength is high, and the fabric is not only mechanical The performance is excellent, and at the same time, on the basis of ensuring the thermal insulation performance, the air permeability and moisture permeability are excellent.

The invention not only has a low hot-pressing temperature, but also maintains the relative freedom of movement of the yarns in the original fabric structure to the greatest extent, so as to maintain its stretching, shear elasticity and bending flexibility, so that the composite fabric is light, thin, soft and elastic. The characteristics of the skin-touching comfort and the freedom of human body movement are guaranteed, and at the same time, it can balance the thermal insulation performance and air permeability, and the pore size and distribution uniformity of the air holes can be precisely controlled by the corresponding parameters to achieve the breathable and moisture-permeable effect. The advantages of stability and high product consistency.

Description of drawings

Fig. 1 is the heat transfer coefficient of the fabric obtained in embodiment 5 and comparative example 1-2, the heat retention rate test chart.

Fig. 2 is the Cro value test figure of the fabric obtained in embodiment 5 and comparative example 1-2.

Fig. 3 is the air and moisture permeability test chart of the fabrics obtained in Example 5 and Comparative Examples 1-2.

Detailed ways

The present invention will be further explained below in conjunction with specific embodiments.

Example 1

A preparation process for film-coated fabrics in a stripping manner, comprising the steps of:

S1, 40kg polyether triol MN-500, 20kg polyether triol EP-330N, 1kg4,4'-methylenebis(2-chloroaniline), 1kg foam stabilizer L2580, 5kg polyoxyethylene glycerin Add ether, 0.1kg of dibutyltin dilaurate, and 1kg of water into the mixing tank, stir at 30°C for 10min, add 20kg of isocyanate prepolymer and continue stirring for 10s to obtain an active adhesive layer;

The isocyanate prepolymer is an isocyanate prepolymer (9048-57-1), brand: domestic Hubei;

S2. The polyester cloth and the organic silicon film are respectively treated with plasma technology. During the treatment process, the normal voltage DC glow discharge is used, the discharge power is 85W, the distance between the plates is 2mm, the treatment speed is 60mm/min, and the treatment time is 2min , the working gas includes helium and oxygen, the flow ratio of helium and oxygen is 10:14ml/min, and the pretreated substrate cloth and the pretreated silicone film are respectively obtained;

The organosilicon film is an organosilicon PDMS film with a thickness of 50 μm, purchased from Hangzhou Guibiao New Material Technology Co., Ltd.

S3. Glue the active adhesive layer to the surface of the pretreated substrate cloth with a roller pattern, the glue amount is 5g/m ² , and shape it. Use a laser with a wavelength of 1064nm and a pulse energy of 0.5mJ to scan the surface of the adhesive layer. The three-dimensional pretreated substrate cloth with micropore array was obtained, and then the pretreated silicone film was attached on the other side of the adhesive layer, and the upper and lower pressing rollers were used to heat and press, wherein the temperature of the upper pressing roller was 70°C, and the obtained Laminated fabric.

Example 2

A preparation process for film-coated fabrics in a stripping manner, comprising the steps of:

S1, 60kg polyether triol MN-500, 40kg polyether triol EP-330N, 2kg4,4'-methylenebis(2-chloroaniline), 2kg foam stabilizer L2580, 12kg polyoxyethylene glycerin Add ether, 1kg dibutyltin dilaurate, and 10kg water into the mixing tank, stir at a temperature of 50°C for 30min, add 60kg of isocyanate prepolymer and continue stirring for 60s to obtain an active adhesive layer;

The isocyanate prepolymer is an isocyanate prepolymer (9048-57-1), brand: domestic Hubei;

S2. The polyester cloth and the organic silicon film are respectively treated by plasma technology. During the treatment process, the normal voltage DC glow discharge is adopted, the discharge power is 110W, the distance between the plates is 4mm, the treatment speed is 80mm/min, and the treatment time is 4min , the working gas includes helium and oxygen, the flow ratio of helium and oxygen is 10:4ml/min, and the pretreated substrate cloth and the pretreated silicone film are respectively obtained;

The organosilicon film is an organosilicon PDMS film with a thickness of 50 μm, purchased from Hangzhou Guibiao New Material Technology Co., Ltd.

S3. Glue the active adhesive layer to the surface of the pretreated substrate cloth with a roller pattern, the glue amount is 12g/m ² , and shape it. Use a laser with a wavelength of 1064nm and a pulse energy of 0.5mJ to scan the surface of the adhesive layer. The three-dimensional pretreated substrate cloth with micropore array was obtained, and then the pretreated silicone film was attached on the other side of the adhesive layer, and the upper and lower pressing rollers were used to heat and press, wherein the temperature of the upper pressing roller was 80°C. Laminated fabric.

Example 3

A preparation process for film-coated fabrics in a stripping manner, comprising the steps of:

S1. Mix 45kg polyether triol MN-500, 22kg polyether triol EP-330N, 1.3kg 4,4'-methylenebis(2-chloroaniline), 1.2kg foam stabilizer L2580, 6kg polyoxygen Add ethylene glyceryl ether, 0.2kg dibutyltin dilaurate, and 2kg water into the mixing tank, stir at a temperature of 32°C for 15min, add 30kg of isocyanate prepolymer and continue stirring for 10-60s to obtain an active adhesive layer;

The isocyanate prepolymer is an isocyanate prepolymer (9048-57-1), brand: domestic Hubei;

S2. The cotton cloth and the organic silicon film are respectively treated with plasma technology. During the treatment process, normal voltage DC glow discharge is adopted, the discharge power is 90W, the distance between the plates is 3mm, the treatment speed is 65mm/min, and the treatment time is 2.5min, the working gas includes helium and oxygen, the flow ratio of helium and oxygen is 10:1.5ml/min, and the pretreated substrate fabric and the pretreated silicone film are respectively obtained;

The organosilicon film is an organosilicon PDMS film with a thickness of 50 μm, purchased from Hangzhou Guibiao New Material Technology Co., Ltd.

S3. Glue the active adhesive layer to the surface of the pretreated substrate cloth with a roller pattern, the glue amount is 7g/m ² , and shape it. Use a laser with a wavelength of 1064nm and a pulse energy of 0.5mJ to scan the surface of the adhesive layer. The three-dimensional pretreated substrate cloth with micropore array was obtained, and then the pretreated silicone film was attached on the other side of the adhesive layer, and the upper pressing roller and the lower pressing roller were used to heat and press, wherein the temperature of the upper pressing roller was 72°C, and the obtained Laminated fabric.

Example 4

A preparation process for film-coated fabrics in a stripping manner, comprising the steps of:

S1. Mix 55kg polyether triol MN-500, 35kg polyether triol EP-330N, 1.8kg 4,4'-methylene bis(2-chloroaniline), 1.6kg foam stabilizer L2580, 10kg polyoxygen Add ethylene glyceryl ether, 0.7kg dibutyltin dilaurate, and 8kg water into the mixing tank, stir at a temperature of 45°C for 24min, add 55kg of isocyanate prepolymer and continue stirring for 50s to obtain an active adhesive layer;

The isocyanate prepolymer is an isocyanate prepolymer (9048-57-1), brand: domestic Hubei;

S2. The cotton fabric and the organic silicon film are respectively treated with plasma technology. During the treatment process, normal voltage DC glow discharge is adopted, the discharge power is 105W, the distance between the plates is 4mm, the treatment speed is 75mm/min, and the treatment time is 3min, the working gas includes helium and oxygen, the flow ratio of helium and oxygen is 10:3ml/min, and the pretreated substrate cloth and the pretreated silicone film are respectively obtained;

The organosilicon film is an organosilicon PDMS film with a thickness of 50 μm, purchased from Hangzhou Guibiao New Material Technology Co., Ltd.

S3. Glue the active adhesive layer to the surface of the pretreated substrate cloth with a roller pattern, the glue amount is 10g/m ² , and shape it. Use a laser with a wavelength of 1064nm and a pulse energy of 0.5mJ to scan the surface of the adhesive layer. The three-dimensional pretreated substrate cloth with micropore array was obtained, and then the pretreated silicone film was attached on the other side of the adhesive layer, and the upper and lower pressing rollers were used to heat and press, wherein the temperature of the upper pressing roller was 78°C, and the obtained Laminated fabric.

Example 5

A preparation process for film-coated fabrics in a stripping manner, comprising the steps of:

S1. Mix 50kg of polyether triol MN-500, 30kg of polyether triol EP-330N, 1.6kg of 4,4'-methylene bis(2-chloroaniline), 1.5kg of foam stabilizer L2580, and 8kg of polyoxygen Add ethylene glyceryl ether, 0.5kg dibutyltin dilaurate, and 5kg water into the mixing tank, stir at a temperature of 40°C for 20min, add 40kg of isocyanate prepolymer and continue stirring for 50s to obtain an active adhesive layer;

The isocyanate prepolymer is an isocyanate prepolymer (9048-57-1), brand: domestic Hubei;

S2. The cotton cloth and the organic silicon film are respectively treated with plasma technology. During the treatment process, normal voltage DC glow discharge is adopted, the discharge power is 100W, the distance between the plates is 3mm, the treatment speed is 70mm/min, and the treatment time is 3min, the working gas includes helium and oxygen, the flow ratio of helium and oxygen is 10:3ml/min, and the pretreated substrate cloth and the pretreated silicone film are respectively obtained;

The organosilicon film is an organosilicon PDMS film with a thickness of 50 μm, purchased from Hangzhou Guibiao New Material Technology Co., Ltd.

S3. Glue the active adhesive layer to the surface of the pretreated substrate cloth with a roller pattern, the glue amount is 10g/m ² , and shape it. Use a laser with a wavelength of 1064nm and a pulse energy of 0.5mJ to scan the surface of the adhesive layer. The three-dimensional pretreated substrate cloth with micropore array was obtained, and then the pretreated silicone film was attached on the other side of the adhesive layer, and the upper pressing roller and the lower pressing roller were used to heat and press, wherein the temperature of the upper pressing roller was 75°C, and the obtained Laminated fabric.

Comparative example 1

A preparation process for film-coated fabrics in a stripping manner, comprising the steps of:

S1. The cotton cloth and the organic silicon film are respectively treated with plasma technology. During the treatment process, normal voltage DC glow discharge is adopted, the discharge power is 100W, the distance between the plates is 3mm, the treatment speed is 70mm/min, and the treatment time is 3min, the working gas includes helium and oxygen, the flow ratio of helium and oxygen is 10:3ml/min, and the pretreated substrate cloth and the pretreated silicone film are respectively obtained;

The organosilicon film is an organosilicon PDMS film with a thickness of 50 μm, purchased from Hangzhou Guibiao New Material Technology Co., Ltd.

S2. Glue the polyurethane adhesive to the surface of the pretreated substrate cloth with a roller pattern, the glue amount is 10g/m ² , and shape it. Use a laser with a wavelength of 1064nm and a pulse energy of 0.5mJ to scan the surface of the adhesive layer to obtain a micro The three-dimensional pretreatment of the base material cloth of the hole array, and then attach the pretreatment silicone film on the other side of the adhesive layer, and use the upper pressing roller and the lower pressing roller to heat and press, and the temperature of the upper pressing roller is 75°C to obtain the coating fabric.

The polyurethane adhesive is purchased from Wenzhou Guoshibang Polymer Material Co., Ltd., and the model is 5693 polyurethane adhesive;

Comparative example 2

A preparation process for film-coated fabrics in a stripping manner, comprising the steps of:

S1. Mix 50kg of polyether triol MN-500, 30kg of polyether triol EP-330N, 1.6kg of 4,4'-methylene bis(2-chloroaniline), 1.5kg of foam stabilizer L2580, and 8kg of polyoxygen Add ethylene glyceryl ether, 0.5kg dibutyltin dilaurate, and 5kg water into the mixing tank, stir at a temperature of 40°C for 20min, add 40kg of isocyanate prepolymer and continue stirring for 10-60s to obtain an active adhesive layer;

The isocyanate prepolymer is an isocyanate prepolymer (9048-57-1), brand: domestic Hubei;

S2. Glue the active adhesive layer to the surface of the cotton fabric with a roller pattern, the glue amount is 10g/m ² , and shape it. Use a laser with a wavelength of 1064nm and a pulse energy of 0.5mJ to scan the surface of the adhesive layer to obtain a micro The three-dimensional pretreatment of the base material fabric of the hole array, and then attaching a silicone film on the other side of the adhesive layer, heating and rolling with the upper pressing roller and the lower pressing roller, wherein the temperature of the upper pressing roller is 75°C, to obtain the coated fabric;

The organosilicon film is an organosilicon PDMS film with a thickness of 50 μm, purchased from Hangzhou Guibiao New Material Technology Co., Ltd.

test

1. Thermal insulation performance test

Sew the film-coated fabric into a bag with a needle density of 9 stitches/cm, fill the bag with white duck down with a down content of 75%, and sew the bag mouth completely to obtain a down bag with a size of 40cm×40cm, including down The amount is 50g, and then the insulation performance test is carried out.

The fabrics prepared in Example 5 and Comparative Example 1-2 are tested for the thermal insulation of the down bag by using a YG606D plate type heat preservation instrument. The specific test method is:

After a blank test under constant temperature and humidity conditions, the sample is covered on the test board, and the sample is preheated. The preheating time is 30 minutes. After the preheating, the instrument automatically enters the sample test to test various down bags. The heat transfer coefficient, Cro value and heat retention rate. When data testing is performed on the same sample again, there is no need to preheat the sample.

Before each sample experiment is started, a blank experiment must be carried out to reduce the experimental error and make the experimental data more accurate. In this experiment, all kinds of down bags were tested 5 times, and the average value was taken as the final experimental result. The test results of heat transfer coefficient and heat preservation rate are shown in Figure 1, and the test results of Cro value are shown in Figure 2.

2. Breathability and moisture permeability test

Carry out breathability test to embodiment 5 and comparative example 1-2 products, in the test process, with reference to GB/T5453-1997 " the mensuration of the air permeability of textile fabric ", select different parts of fabric and avoid the edge of fabric and fold place to fabric Carry out the air permeability test, the pressure drop is selected as 100Pa, the test area is 20cm ² , and the test mode is automatic. Different fabrics were tested 5 times, and the average value was taken as the final test result. The test results are shown in Figure 3.

The products of Example 5 and Comparative Example 1-2 were tested for moisture permeability. During the test, the moisture permeability test was carried out with reference to GB/T12704.2-2009 "Test Method for Moisture Permeability of Textile Fabrics Part 2: Moisture Absorption Method", and the test results As shown in Figure 3.

3. Tensile performance test

The products of Example 5 and Comparative Example 1-2 were tested for tensile properties. During the test, the fabric was conditioned for 24 hours under standard atmospheric conditions, and then the YG026D electronic strength tester was used to test the tensile properties of the fabric. The clamping distance is set to 10mm, and the stretching speed is 50mm/min. Each fabric takes 5 groups of average values as the final test results, and the test results are shown in Table 1.

Test items Example 5 Comparative example 1 Comparative example 2 Breaking strength, N 384.1 375.6 341.3 Elongation at break, % 5.2 6.1 11.6

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (9)

1. a kind of film-covered fabric preparation technology that adopts stripping mode is characterized in that, comprises the steps: S1. By weight, 40-60 parts of polyether triol MN-500, 20-40 parts of polyether triol EP-330N, 1-2 parts of 4,4'-methylenebis(2-chloroaniline ), 1-2 parts of foam stabilizer, 5-12 parts of polyoxyethylene glyceryl ether, 0.1-1 part of catalyst, 1-10 parts of water are added to the mixing tank, stirred at a temperature of 30-50 °C, and 20-60 One part of isocyanate prepolymer continues to stir for 10-60s to obtain an active adhesive layer; S2. The substrate fabric and the organic silicon film are respectively treated with plasma technology. During the treatment process, the normal pressure DC glow discharge is used to obtain the pretreated substrate fabric and the pretreated organic silicon film respectively; S3. Glue the active adhesive layer to the surface of the pretreated substrate cloth with a roller pattern, shape it, and use a laser to scan the surface of the adhesive layer to obtain a three-dimensional pretreated substrate cloth with a microhole array, and then place it on the adhesive layer. A pre-treated silicone film is attached to one side, and the upper pressing roller and the lower pressing roller are used to heat and press, wherein the temperature of the upper pressing roller is 70-80°C to obtain a coated fabric. 2. The film-coated fabric preparation process adopting the stripping method according to claim 1, wherein, in S1, the catalyst is an organotin catalyst, preferably dibutyltin dilaurate. 3. The process for preparing film-coated fabrics by peeling off according to claim 1, characterized in that, in S1, the foam stabilizer is foam stabilizer L2580. 4. The film-coated fabric preparation process adopting the stripping method according to claim 1 is characterized in that, in S2, during the discharge process, the discharge power is 85-110W, the distance between the pole plates is 2-4mm, and the processing speed is 60-110W. 80mm/min, the processing time is 2-4min, the working gas includes helium and oxygen, and the flow ratio of helium to oxygen is 10:1-4ml/min. 5. The process for preparing the film-coated fabric by peeling off according to claim 1, wherein in S2, the organic silicon film is an organic silicon PDMS film with a thickness of 50 μm. 6. The process for preparing the film-coated fabric by peeling off according to claim 1, wherein, in S2, the base fabric is one of polyester, cotton and cotton. 7. The process for preparing the film-coated fabric by peeling off according to claim 1, characterized in that, in S3, the amount of glue applied to the surface of the pretreated substrate fabric is 5-12g/m ² . 8. The process for preparing film-coated fabrics by peeling off according to claim 1, characterized in that, in S3, the wavelength of the laser is 1064nm, and the pulse energy is 0.5mJ. 9. A film-coated fabric, characterized in that it is made by adopting the preparation process of the film-coated fabric in a peeling method according to any one of claims 1-8.

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