A windproof and anti-pilling breathable fabric

Abstract

The application discloses a windproof and drill-proof breathable fabric, which comprises a bottom fabric on the inner side, a surface fabric on the outer side and a modified windproof and breathable film which is compounded between the bottom fabric and the surface fabric by hot melt adhesive, wherein the modified windproof and breathable film is obtained by ultraviolet grafting treatment of the windproof and breathable film. The windproof and drill-proof breathable fabric has polyurethane in the windproof and breathable film modified by ethylene glycol, silane coupling agent, 1,3-propanediol and sodium ricinoleate, and the windproof and breathable film is subjected to ultraviolet grafting reaction by methyl methacrylate monomer. The modification of polyurethane and the ultraviolet grafting treatment of the windproof and breathable film are combined to produce a synergistic effect, which can greatly improve the drill-proof property and wrinkle resistance of the fabric while ensuring the air permeability of the fabric, so that the fabric has better performance and is beneficial to popularization and use as a down product fabric.

Description

Technical Field

[0001] This invention relates to the field of clothing fabric technology, and in particular to a breathable fabric that is windproof and prevents down leakage. Background Technology

[0002] Fabric, the primary material used to make clothing, not only directly influences the color, shape, and overall appearance of garments, but also provides various functionalities depending on the different material layers. For down products, the fabric uses a windproof and breathable membrane between the base and outer layers to prevent stuffiness and drafts, thus achieving a windproof and breathable effect. However, because the fabric is filled with a large amount of down, the down feathers are prone to leakage under compression, affecting the fabric's usability and limiting its wrinkle resistance, ultimately impacting the garment's appearance. Summary of the Invention

[0003] The main objective of this invention is to provide a breathable fabric that is windproof and prevents down leakage, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A windproof and down-proof breathable fabric includes an inner bottom layer fabric, an outer top layer fabric, and a modified windproof and breathable membrane bonded between the bottom layer fabric and the top layer fabric by hot melt adhesive. The modified windproof and breathable membrane is obtained by ultraviolet grafting treatment of the windproof and breathable membrane.

[0006] The windproof and breathable membrane is prepared by the following raw materials by weight: 100 parts modified polyurethane, 20-40 parts toluene, 15-40 parts methyl ethyl ketone, 0.05-0.2 parts dimethylacetamide, 5-15 parts color paste, and 3-6 parts catalyst.

[0007] As a further optimization of the present invention, the preparation steps of the windproof and breathable film are as follows:

[0008] Step A1: Mix and stir the raw materials for preparing the windproof and breathable film to form the working solution to be coated;

[0009] Step A2: Apply the coating working solution onto the transfer carrier, and after drying, peel it off to form a windproof and breathable film.

[0010] As a further optimization of the present invention, the modified polyurethane is obtained through the following steps:

[0011] Step B1: Take polyhexyl ester polyol into a flask and heat it to 120°C to react for 1 hour. Vacuum the flask, cool it, add hexamethylene isocyanate and catalyst and mix and react at 75°C to obtain the prepolymer.

[0012] Step B2: The obtained prepolymer, chain extender, coupling agent, crosslinking agent and sodium castor oil sulfate are added into a sealed high-pressure reactor and stirred. After stirring, the mixture is heated to obtain modified polyurethane.

[0013] As a further optimization of the present invention, the ultraviolet grafting treatment refers to performing vacuum ultraviolet pre-irradiation treatment on the windproof and breathable film under nitrogen protection. After the vacuum ultraviolet pre-irradiation treatment is completed, it is immediately placed in methyl methacrylate monomer under pure nitrogen protection for grafting reaction. After sealing, it is left to stand for 1 hour, and then the vacuum ultraviolet lamp is turned on for 20 minutes of irradiation. After taking it out, it is rinsed with distilled water and dried to obtain the modified windproof and breathable film.

[0014] As a further optimization of the present invention, in step A2, the coating thickness is 0.12-0.15 mm, and the transfer carrier is release paper.

[0015] As a further optimization of the present invention, the mixing reaction time in step B1 is 2-4 hours.

[0016] As a further optimization of the present invention, in step B2, the mass ratio of prepolymer, chain extender, coupling agent, crosslinking agent and sodium castor oil sulfate is (7-9):(2-3):1:1:(2-5), and the chain extender, coupling agent and crosslinking agent are ethylene glycol, silane coupling agent and 1,3-propanediol, respectively.

[0017] As a further optimization of the present invention, the wavelength of the vacuum ultraviolet lamp is 220-380nm and the power of the vacuum ultraviolet lamp is 100-300W.

[0018] As a further optimization of the present invention, the catalyst is dibutyltin dilaurate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In this invention, ethylene glycol, silane coupling agents, 1,3-propanediol, and sodium castor oil sulfate are used to modify the polyurethane in the windproof and breathable film. The resulting windproof and breathable film is then subjected to UV grafting with methyl methacrylate monomer. The combination of polyurethane modification and UV grafting of the windproof and breathable film produces a synergistic effect, significantly improving the fabric's down-proof and wrinkle-resistant properties while maintaining its breathability. This results in superior fabric performance, making it suitable for widespread use as a down-filled fabric. Detailed Implementation

[0021] The present application will now be described in further detail. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Example 1

[0023] A windproof and down-proof breathable fabric includes an inner bottom layer fabric, an outer top layer fabric, and a modified windproof and breathable membrane bonded between the bottom layer fabric and the top layer fabric by hot melt adhesive. The modified windproof and breathable membrane is obtained by ultraviolet grafting treatment of the windproof and breathable membrane.

[0024] The preparation steps of the windproof and breathable membrane are as follows:

[0025] Step A1: By weight, mix and stir 100 parts modified polyurethane, 20 parts toluene, 15 parts methyl ethyl ketone, 0.05 parts dimethylacetamide, 5 parts colorant, and 3 parts dibutyltin dilaurate to form the coating working solution. The modified polyurethane is obtained through the following steps:

[0026] Step B1: Take polyhexyl ester polyol into a flask and heat it to 120°C for 1 hour. Vacuum the flask and cool it. Then add hexamethylene isocyanate and catalyst and mix them at 75°C for 2 hours to obtain the prepolymer.

[0027] Step B2: The obtained prepolymer, ethylene glycol, silane coupling agent, 1,3-propanediol and sodium castor oil sulfate are added into a sealed high-pressure reactor in a mass ratio of 7:2:1:1:5 and stirred. After stirring, the mixture is heated to obtain modified polyurethane.

[0028] Step A2: Apply the coating working solution onto the transfer carrier, and after drying, peel it off to form a windproof and breathable film. The coating thickness is 0.12 mm, and the transfer carrier is release paper.

[0029] UV grafting treatment refers to pre-irradiating the windproof and breathable membrane with vacuum UV light under nitrogen protection. After the vacuum UV pre-irradiation treatment, the membrane is immediately placed in methyl methacrylate monomer under pure nitrogen protection for grafting reaction. After sealing and standing for 1 hour, a 100W vacuum UV lamp is turned on for 20 minutes. After removal, the membrane is rinsed with distilled water and dried to obtain the modified windproof and breathable membrane.

[0030] Example 2

[0031] A windproof and down-proof breathable fabric includes an inner bottom layer fabric, an outer top layer fabric, and a modified windproof and breathable membrane bonded between the bottom layer fabric and the top layer fabric by hot melt adhesive. The modified windproof and breathable membrane is obtained by ultraviolet grafting treatment of the windproof and breathable membrane.

[0032] The preparation steps of the windproof and breathable membrane are as follows:

[0033] Step A1: By weight, mix and stir 100 parts modified polyurethane, 40 parts toluene, 40 parts methyl ethyl ketone, 0.2 parts dimethylacetamide, 15 parts colorant, and 6 parts dibutyltin dilaurate to form the coating working solution. The modified polyurethane is obtained through the following steps:

[0034] Step B1: Take polyhexyl ester polyol into a flask and heat it to 120°C for 1 hour. Vacuum the flask and cool it. Then add hexamethylene isocyanate and catalyst and mix them at 75°C for 2 hours to obtain the prepolymer.

[0035] Step B2: The obtained prepolymer, ethylene glycol, silane coupling agent, 1,3-propanediol and sodium castor oil sulfate are added into a sealed high-pressure reactor in a mass ratio of 7:2:1:1:2 and stirred. After stirring, the mixture is heated to obtain modified polyurethane.

[0036] Step A2: Apply the coating working solution onto the transfer carrier, and peel it off after drying to form a windproof and breathable film. The coating thickness is 0.15 mm, and the transfer carrier is release paper.

[0037] UV grafting treatment refers to pre-irradiating the windproof and breathable membrane with vacuum UV light under nitrogen protection. After the vacuum UV pre-irradiation treatment, the membrane is immediately placed in methyl methacrylate monomer under pure nitrogen protection for grafting reaction. After sealing and standing for 1 hour, a 100W vacuum UV lamp is turned on for 20 minutes. After removal, the membrane is rinsed with distilled water and dried to obtain the modified windproof and breathable membrane.

[0038] Example 3

[0039] A windproof and down-proof breathable fabric includes an inner bottom layer fabric, an outer top layer fabric, and a modified windproof and breathable membrane bonded between the bottom layer fabric and the top layer fabric by hot melt adhesive. The modified windproof and breathable membrane is obtained by ultraviolet grafting treatment of the windproof and breathable membrane.

[0040] The preparation steps of the windproof and breathable membrane are as follows:

[0041] Step A1: By weight, mix and stir 100 parts modified polyurethane, 30 parts toluene, 25 parts methyl ethyl ketone, 0.10 parts dimethylacetamide, 10 parts colorant, and 4 parts dibutyltin dilaurate to form the coating working solution. The modified polyurethane is obtained through the following steps:

[0042] Step B1: Take polyhexyl ester polyol into a flask and heat it to 120°C for 1 hour. Vacuum the flask and cool it. Then add hexamethylene isocyanate and catalyst and mix them at 75°C for 2 hours to obtain the prepolymer.

[0043] Step B2: The obtained prepolymer, ethylene glycol, silane coupling agent, 1,3-propanediol and sodium castor oil sulfate are added into a sealed high-pressure reactor in a mass ratio of 7:2:1:1:2 and stirred. After stirring, the mixture is heated to obtain modified polyurethane.

[0044] Step A2: Apply the coating working solution onto the transfer carrier, and after drying, peel it off to form a windproof and breathable film. The coating thickness is 0.14 mm, and the transfer carrier is release paper.

[0045] UV grafting treatment refers to pre-irradiating the windproof and breathable membrane with vacuum UV light under nitrogen protection. After the vacuum UV pre-irradiation treatment, the membrane is immediately placed in methyl methacrylate monomer under pure nitrogen protection for grafting reaction. After sealing and standing for 1 hour, a 100W vacuum UV lamp is turned on for 20 minutes. After removal, the membrane is rinsed with distilled water and dried to obtain the modified windproof and breathable membrane.

[0046] Example 4

[0047] A windproof and down-proof breathable fabric includes an inner bottom layer fabric, an outer top layer fabric, and a modified windproof and breathable membrane bonded between the bottom layer fabric and the top layer fabric by hot melt adhesive. The modified windproof and breathable membrane is obtained by ultraviolet grafting treatment of the windproof and breathable membrane.

[0048] The preparation steps of the windproof and breathable membrane are as follows:

[0049] Step A1: By weight, mix and stir 100 parts modified polyurethane, 30 parts toluene, 25 parts methyl ethyl ketone, 0.10 parts dimethylacetamide, 10 parts colorant, and 4 parts dibutyltin dilaurate to form the coating working solution. The modified polyurethane is obtained through the following steps:

[0050] Step B1: Take polyhexyl ester polyol into a flask and heat it to 120°C for 1 hour. Vacuum the flask and cool it. Then add hexamethylene isocyanate and catalyst and mix them at 75°C for 2 hours to obtain the prepolymer.

[0051] Step B2: The obtained prepolymer, ethylene glycol, silane coupling agent, 1,3-propanediol and sodium castor oil sulfate are added into a sealed high-pressure reactor in a mass ratio of 9:3:1:1:5 and stirred. After stirring, the mixture is heated to obtain modified polyurethane.

[0052] Step A2: Apply the coating working solution onto the transfer carrier, and after drying, peel it off to form a windproof and breathable film. The coating thickness is 0.14 mm, and the transfer carrier is release paper.

[0053] UV grafting treatment refers to pre-irradiating the windproof and breathable membrane with vacuum UV light under nitrogen protection. After the vacuum UV pre-irradiation treatment, the membrane is immediately placed in methyl methacrylate monomer under pure nitrogen protection for grafting reaction. After sealing and standing for 1 hour, a 300W vacuum UV lamp is turned on for 20 minutes of irradiation. After removal, the membrane is rinsed with distilled water and dried to obtain the modified windproof and breathable membrane.

[0054] Example 5

[0055] A windproof and down-proof breathable fabric includes an inner bottom layer fabric, an outer top layer fabric, and a modified windproof and breathable membrane bonded between the bottom layer fabric and the top layer fabric by hot melt adhesive. The modified windproof and breathable membrane is obtained by ultraviolet grafting treatment of the windproof and breathable membrane.

[0056] The preparation steps of the windproof and breathable membrane are as follows:

[0057] Step A1: By weight, mix and stir 100 parts modified polyurethane, 30 parts toluene, 25 parts methyl ethyl ketone, 0.10 parts dimethylacetamide, 10 parts colorant, and 4 parts dibutyltin dilaurate to form the coating working solution. The modified polyurethane is obtained through the following steps:

[0058] Step B1: Take polyhexyl ester polyol into a flask and heat it to 120°C for 1 hour. Vacuum the flask and cool it. Then add hexamethylene isocyanate and catalyst and mix them at 75°C for 2 hours to obtain the prepolymer.

[0059] Step B2: The obtained prepolymer, ethylene glycol, silane coupling agent, 1,3-propanediol and sodium castor oil sulfate are added into a sealed high-pressure reactor in a mass ratio of 8:2:1:1:4 and stirred. After stirring, the mixture is heated to obtain modified polyurethane.

[0060] Step A2: Apply the coating working solution onto the transfer carrier, and after drying, peel it off to form a windproof and breathable film. The coating thickness is 0.14 mm, and the transfer carrier is release paper.

[0061] UV grafting treatment refers to pre-irradiating the windproof and breathable membrane with vacuum UV light under nitrogen protection. After the vacuum UV pre-irradiation treatment, the membrane is immediately placed in methyl methacrylate monomer under pure nitrogen protection for grafting reaction. After sealing and standing for 1 hour, a 200W vacuum UV lamp is turned on for 20 minutes of irradiation. After removal, the membrane is rinsed with distilled water and dried to obtain the modified windproof and breathable membrane.

[0062] Comparative Example 1

[0063] A windproof and down-proof breathable fabric includes an inner bottom layer fabric, an outer top layer fabric, and a modified windproof and breathable membrane bonded between the bottom layer fabric and the top layer fabric by hot melt adhesive. The modified windproof and breathable membrane is obtained by ultraviolet grafting treatment of the windproof and breathable membrane.

[0064] The preparation steps of the windproof and breathable membrane are as follows:

[0065] Step A1: Mix and stir 100 parts polyurethane, 30 parts toluene, 25 parts methyl ethyl ketone, 0.10 parts dimethyl acetamide, 10 parts color paste, and 4 parts dibutyltin dilaurate by weight to form the coating working solution.

[0066] Step A2: Apply the coating working solution onto the transfer carrier, and after drying, peel it off to form a windproof and breathable film. The coating thickness is 0.14 mm, and the transfer carrier is release paper.

[0067] UV grafting treatment refers to pre-irradiating the windproof and breathable membrane with vacuum UV light under nitrogen protection. After the vacuum UV pre-irradiation treatment, the membrane is immediately placed in methyl methacrylate monomer under pure nitrogen protection for grafting reaction. After sealing and standing for 1 hour, a 200W vacuum UV lamp is turned on for 20 minutes of irradiation. After removal, the membrane is rinsed with distilled water and dried to obtain the modified windproof and breathable membrane.

[0068] Comparative Example 2

[0069] A windproof and downproof breathable fabric includes an inner bottom layer fabric, an outer top layer fabric, and a windproof and breathable membrane bonded between the bottom layer fabric and the top layer fabric by hot melt adhesive.

[0070] The preparation steps of the windproof and breathable membrane are as follows:

[0071] Step A1: By weight, mix and stir 100 parts modified polyurethane, 30 parts toluene, 25 parts methyl ethyl ketone, 0.10 parts dimethylacetamide, 10 parts colorant, and 4 parts dibutyltin dilaurate to form the coating working solution. The modified polyurethane is obtained through the following steps:

[0072] Step B1: Take polyhexyl ester polyol into a flask and heat it to 120°C for 1 hour. Vacuum the flask and cool it. Then add hexamethylene isocyanate and catalyst and mix them at 75°C for 2 hours to obtain the prepolymer.

[0073] Step B2: The obtained prepolymer, ethylene glycol, silane coupling agent, 1,3-propanediol and sodium castor oil sulfate are added into a sealed high-pressure reactor in a mass ratio of 8:2:1:1:4 and stirred. After stirring, the mixture is heated to obtain modified polyurethane.

[0074] Step A2: Apply the coating working solution onto the transfer carrier, and after drying, peel it off to form a windproof and breathable film. The coating thickness is 0.14 mm, and the transfer carrier is release paper.

[0075] control group

[0076] A windproof and downproof breathable fabric includes an inner bottom layer fabric, an outer top layer fabric, and a windproof and breathable membrane bonded between the bottom layer fabric and the top layer fabric by hot melt adhesive.

[0077] The preparation steps of the windproof and breathable membrane are as follows:

[0078] Step A1: Mix and stir 100 parts polyurethane, 30 parts toluene, 25 parts methyl ethyl ketone, 0.10 parts dimethyl acetamide, 10 parts color paste, and 4 parts dibutyltin dilaurate by weight to form the coating working solution.

[0079] Step A2: Apply the coating working solution onto the transfer carrier, and after drying, peel it off to form a windproof and breathable film. The coating thickness is 0.14 mm, and the transfer carrier is release paper.

[0080] The breathable fabrics obtained from Examples 1-5, Comparative Examples 1-2, and the control group were subjected to performance tests. The tests included: (1) Breathability test: referring to the national standard GB / T5453-1997; (2) Down-proof performance test: using the rotating box method, the fabric sample to be tested was filled with down of equal weight and placed in a rotating box containing hard rubber balls. The rotating box rotated at a constant speed to bring the rubber balls to a certain height and impact the test sample pack in the box, simulating the various squeezing, rubbing, and collision effects that down products are subjected to during use. Finally, the down-proof performance of the breathable fabric was evaluated based on the number of down fibers in the test sample; (3) Wrinkle resistance test: tested according to the wrinkle recovery angle method in GB / T 3819-1997; the results are shown in the table below:

[0081] Table 1:

[0082] project Air permeability (mm / s) Down weight / mg Example 1 24.6 830 Example 2 24.7 820 Example 3 25.5 800 Example 4 26.8 790 Example 5 27.0 770 Comparative Example 1 23.5 1500 Comparative Example 2 23.3 1520 control group 23.1 1790

[0083] Table 2:

[0084]

[0085]

[0086] As can be seen from the table above, the breathable fabrics for windproof and downproof protection prepared by Examples 1-5, Comparative Examples 1-2, and the control group of the present invention all have an air permeability of over 20%, ensuring good breathability. The fabric in Example 5 has the highest air permeability. Observing Example 5 with Comparative Examples 1 or 2, it can be seen that modifying the polyurethane in the windproof and breathable film or performing ultraviolet grafting treatment on the windproof and breathable film can enhance the downproof and wrinkle-resistant properties of the fabric. Comparing Example 5 with the control group, it can be seen that combining the polyurethane modification treatment and the ultraviolet grafting treatment on the windproof and breathable film can produce a synergistic effect, which can significantly improve the downproof and wrinkle-resistant properties of the fabric while ensuring the air permeability, resulting in better fabric performance and facilitating its widespread use.

[0087] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A windproof and down-proof breathable fabric, comprising an inner bottom layer fabric, an outer top layer fabric, and a modified windproof and breathable membrane bonded between the bottom layer fabric and the top layer fabric by hot melt adhesive, characterized in that: The modified windproof and breathable membrane is obtained by ultraviolet grafting treatment of the windproof and breathable membrane; The windproof and breathable membrane, by weight, comprises the following raw materials: 100 parts modified polyurethane, 20-40 parts toluene, 15-40 parts methyl ethyl ketone, 0.05-0.2 parts dimethylacetamide, 5-15 parts color paste, and 3-6 parts catalyst; the modified polyurethane is obtained through the following steps: Step B1: Take polyhexyl ester polyol into a flask and heat it to 120°C to react for 1 hour. Vacuum the flask, cool it, add hexamethylene isocyanate and catalyst and mix and react at 75°C to obtain the prepolymer. Step B2: The obtained prepolymer, chain extender, coupling agent, crosslinking agent and sodium castor oil sulfate are added into a sealed high-pressure reactor and stirred. After stirring, the mixture is heated to obtain modified polyurethane. The ultraviolet grafting treatment refers to the pre-irradiation treatment of the windproof and breathable film under nitrogen protection in a vacuum ultraviolet light. After the pre-irradiation treatment is completed, the film is immediately placed in a pure nitrogen-protected methyl methacrylate monomer for grafting reaction. After sealing and standing for 1 hour, the vacuum ultraviolet lamp is turned on and the irradiation time is 20 minutes. After taking it out, it is rinsed with distilled water and dried to obtain the modified windproof and breathable film. In step B2, the mass ratio of prepolymer, chain extender, coupling agent, crosslinking agent and sodium castor oil sulfate is (7-9):(2-3):1:1:(2-5), and the chain extender, coupling agent and crosslinking agent are ethylene glycol, silane coupling agent and 1,3-propanediol, respectively.

2. The windproof and down-proof breathable fabric according to claim 1, characterized in that: The preparation steps of the windproof and breathable membrane are as follows: Step A1: Mix and stir the raw materials for preparing the windproof and breathable film to form the working solution to be coated; Step A2: Apply the coating working solution onto the transfer carrier, and after drying, peel it off to form a windproof and breathable film.

3. The windproof and down-proof breathable fabric according to claim 2, characterized in that: In step A2, the coating thickness is 0.12-0.15 mm, and the transfer carrier is release paper.

4. The windproof and down-proof breathable fabric according to claim 1, characterized in that: The mixing reaction time in step B1 is 2-4 hours.

5. The windproof and down-proof breathable fabric according to claim 1, characterized in that: The vacuum ultraviolet lamp has a wavelength of 220-380nm and a power of 100-300W.

6. The windproof and down-proof breathable fabric according to claim 1, characterized in that: The catalyst is dibutyltin dilaurate.

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