Waterproof and ultraviolet resistant outdoor fabric

Abstract

This invention discloses a waterproof and UV-resistant outdoor fabric, which is composed of a base fabric and a functional film bonded together with an adhesive. The surface of the base fabric is provided with a waterproof and UV-resistant functional layer. The preparation method of the waterproof and UV-resistant outdoor fabric is as follows: 1) A waterproofing agent layer is applied to the base fabric: ① Prepare a waterproof and UV-resistant finishing solution; ② Immerse the base fabric in the waterproof and UV-resistant finishing solution, performing two dips and two nips; ③ Dry and bake to form a waterproof and UV-resistant functional layer on the surface of the base fabric; 2) The base fabric is bonded to the functional film: ④ Apply an adhesive to the surfaces of the base fabric and the functional film; ⑤ The fabric and film are flatly stacked together and then transferred to a heat press for heat pressing to complete the hot-press lamination, thus obtaining the waterproof and UV-resistant outdoor fabric. The waterproof and UV-resistant outdoor fabric of this invention has good waterproof, UV-resistant, and moisture-permeable functions.

Description

Technical Field

[0001] This invention relates to a composite fabric, specifically a waterproof and UV-resistant outdoor fabric, belonging to the field of functional composite fabrics. Background Technology

[0002] In addition to standard properties like windproof and waterproofing, outdoor clothing also needs functions such as UV protection, antibacterial properties, and deodorization. Excessive UV exposure is causing an increasing number of diseases; treating fabrics with UV-protective agents can reduce the damage of UV rays to human skin. People sweat profusely during outdoor activities; if the fabric has poor moisture-wicking properties, it will create a sticky and stuffy feeling. Therefore, outdoor sportswear fabrics should have good moisture-wicking properties, quickly absorbing and transferring sweat to maintain a comfortable and dry feel. Summary of the Invention

[0003] The purpose of this invention is to provide a waterproof and UV-resistant outdoor fabric, which is composed of a base fabric and a functional film. This fabric has good waterproof, UV-resistant, and breathable functions.

[0004] To achieve the above objectives, the present invention employs the following technical solution.

[0005] A waterproof and UV-resistant outdoor fabric is made of a base fabric and a functional film bonded together with an adhesive. The surface of the base fabric is provided with a waterproof and UV-resistant functional layer. The preparation method of the waterproof and UV-resistant outdoor fabric is as follows:

[0006] 1) The base material fabric is equipped with a waterproof and UV-resistant functional layer.

[0007] ① Prepare a waterproof and UV-resistant finishing solution;

[0008] ②The base material is immersed in a waterproof and UV-resistant finishing solution, and then dipped and rubbed twice.

[0009] ③Drying and baking form a waterproof and UV-resistant functional layer on the surface of the substrate fabric;

[0010] 2) Composite of substrate fabric and functional film

[0011] ④ Apply an adhesive to the surface of the substrate fabric and the functional film;

[0012] ⑤ The fabric and film are flatly stacked together, and then transferred to a heat press machine for heat pressing to complete the hot pressing and lamination, thus obtaining a waterproof and UV-resistant outdoor fabric.

[0013] The waterproof and UV-resistant finishing liquid is made by mixing silicone waterproof and UV-resistant emulsion with water.

[0014] The aforementioned silicone waterproof and UV-resistant emulsion is prepared as follows:

[0015] ① Mix 90 parts D4 (octamethyltetrasiloxane), 6 parts AEO-9, 4 parts AEO-3, and 140 parts water, stir, and emulsify into an emulsion;

[0016] ② Add 12 parts dodecylbenzenesulfonic acid and 230 parts water to the reactor, stir and dissolve, heat to 80℃, add pre-emulsion dropwise, and then keep the temperature for 2 hours;

[0017] ③ Mix 50 parts water, 0.7 parts AEO-9, 0.4 parts AEO-3, 4 parts benzophenone-containing silane coupling agent, and 6 parts long-chain siloxane, emulsify and drip into the reactor, continue to keep the temperature for 2 hours, and then cool down to below 40℃;

[0018] ④ Slowly add 110 parts of silica sol, stir and mix well, neutralize and filter to obtain an organosilicon waterproof and UV-resistant emulsion.

[0019] The silica sol is made from tetraethyl orthosilicate, long-chain siloxane, ammonia, water, and emulsifier. First, 20 parts of tetraethyl orthosilicate, 6 parts of long-chain siloxane, 0.4 parts of AEO-9, and 0.7 parts of sodium dodecylbenzenesulfonate are added to 100 parts of water and emulsified and homogenized by high-speed shearing for 30 minutes. The mixture is then poured into a reaction vessel, heated to 60°C in a water bath, and ammonia is slowly added dropwise to adjust the pH value to 8-9. After maintaining the temperature for 6 hours, the mixture is cooled to obtain the silica sol.

[0020] The base fabric is 100D*100D polyester spring spun yarn with a weight of 130g / m². 2 .

[0021] The functional film is a PU film with a thickness of 0.015 mm.

[0022] The adhesive is a polyurethane hot melt adhesive.

[0023] This invention relates to a waterproof and UV-resistant outdoor fabric, which is composed of a base fabric and a functional film bonded together with an adhesive. The surface of the base fabric has a waterproof and UV-resistant functional layer, giving the fabric excellent waterproof, UV-resistant, and breathable properties. Long-chain polysiloxane-modified silica sol and organosilicon waterproof and UV-resistant emulsion are low surface energy materials. During film formation, the lateral polydimethylsiloxane readily migrates to the surface, oriented to form a uniform and dense hydrophobic film, which combines with the rough surface of the nano-silica structure to enhance the hydrophobicity of the base fabric.

[0024] Nano-silica exhibits good reflection and scattering properties of ultraviolet light, thus possessing UV shielding capabilities. Grafting benzophenone compounds onto the side of the organosilicon molecular chain not only improves the stability of these compounds and solves the degradation problem of traditional UV absorbers, but also synergistically enhances the UV protection performance of the fabric with nano-silica.

[0025] The functional membrane in the fabric diffuses or conducts the emitted sweat vapor to the outside through moisture absorption and conduction, which helps to quickly remove sweat and keep the skin dry and comfortable. Detailed Implementation

[0026] The substance unit "part" in this invention refers to "parts by mass".

[0027] This invention discloses a waterproof and UV-resistant outdoor fabric, which is composed of a base fabric, a functional film, and an adhesive. The surface of the base fabric is provided with a waterproof and UV-resistant functional layer. The preparation method of the waterproof and UV-resistant outdoor fabric is as follows:

[0028] 1) The base material fabric is equipped with a waterproof and UV-resistant functional layer.

[0029] ① Prepare a waterproof and UV-resistant finishing solution;

[0030] ②The base material is immersed in a waterproof and UV-resistant finishing solution, with two dips and two slits, and the slit rate is 80%.

[0031] ③Drying at 100℃ and baking at 150℃ forms a waterproof and UV-resistant functional layer on the surface of the substrate fabric;

[0032] 2) Composite of substrate fabric and functional film

[0033] ④ Apply an adhesive to the surface of the substrate fabric and the functional film;

[0034] ⑤ The fabric and film are flatly stacked together, and then transferred to a heat press machine for heat pressing to complete the hot pressing and lamination, thus obtaining a waterproof and UV-resistant outdoor fabric.

[0035] The waterproof and UV-resistant finishing liquid is made by mixing silicone waterproof and UV-resistant emulsion with water.

[0036] The aforementioned silicone waterproof and UV-resistant emulsion is prepared as follows:

[0037] ① Mix 90 parts D4 (octamethyltetrasiloxane), 6 parts AEO-9, 4 parts AEO-3, and 140 parts water, stir, and emulsify into an emulsion;

[0038] ② Add 12 parts dodecylbenzenesulfonic acid and 230 parts water to the reactor, stir and dissolve, heat to 80℃, add pre-emulsion dropwise, and then keep the temperature for 2 hours;

[0039] ③ Mix 50 parts water, 0.7 parts AEO-9, 0.4 parts AEO-3, 4 parts benzophenone-containing silane coupling agent, and 6 parts long-chain siloxane, emulsify and drip into the reactor, continue to keep the temperature for 2 hours, and then cool down to below 40℃;

[0040] ④ Slowly add 110 parts of silica sol, stir and mix well, neutralize and filter to obtain an organosilicon waterproof and UV-resistant emulsion.

[0041] The silica sol is made from tetraethyl orthosilicate, long-chain siloxane, ammonia, water, and emulsifier. First, 20 parts of tetraethyl orthosilicate, 6 parts of long-chain siloxane, 0.4 parts of AEO-9, and 0.7 parts of sodium dodecylbenzenesulfonate are added to 100 parts of water and emulsified and homogenized by high-speed shearing for 30 minutes. The mixture is then poured into a reaction vessel, heated to 60°C in a water bath, and ammonia is slowly added dropwise to adjust the pH value to 8-9. After maintaining the temperature for 6 hours, the mixture is cooled to obtain the silica sol.

[0042] The benzophenone-containing silane coupling agent is prepared by an addition reaction of trimethoxysilane and 2-hydroxy-4-propenoxybenzophenone. The specific steps are as follows: 28.2 g (0.1 mol) of 2-hydroxy-4-propenoxybenzophenone (CAS No.: 2549-87-3), 80 g of toluene, and 0.12 g of platinum catalyst are added to a four-necked round-bottom flask equipped with a mechanical stirrer, a reflux condenser, a constant-pressure dropping funnel, and a nitrogen gas delivery tube. The mixture was heated to 85°C and refluxed for 30 min under a nitrogen atmosphere. 14.7 g (0.12 mol) of trimethoxysilane (CAS No.: 2487-90-3) and 10 g of toluene were weighed, mixed thoroughly, and added to a four-necked flask over 2 h using a constant pressure dropping funnel. The mixture was then heated to 100°C and held for 6 h. After cooling, the unreacted monomer was distilled under reduced pressure at 0.01 MPa. The product was then discharged as the benzophenone-containing silane coupling agent (reaction formula 1).

[0043]

[0044] The long-chain siloxane is prepared as follows: A measured amount of 3-aminopropyltriethoxysilane and IPDI (isophorone diisocyanate) are loaded into a reactor under nitrogen protection. A small amount of dibutyltin dilaurate is added to catalyze the reaction. The temperature is slowly raised to 70°C, and the reaction is continued for approximately 2 hours until the isocyanate content reaches the theoretical level. A measured amount of monohydroxy-terminated dimethicone oil (Mn = 1000) is added, and the reaction continues until the isocyanate content reaches the new theoretical level, yielding the long-chain siloxane. The molar ratio of 3-aminopropyltriethoxysilane, IPDI, and monohydroxy-terminated dimethicone oil is 1:1:1. The reaction process is shown in Reaction Formula 2.

[0045]

[0046] The base fabric is 100D*100D polyester spring spun yarn with a weight of 130g / m². 2 .

[0047] The functional film is a PU film with a thickness of 0.015mm and has waterproof and breathable properties.

[0048] The adhesive is a polyurethane hot melt adhesive, a commercially available, standard product.

[0049] Example 1:

[0050] An organosilicon waterproof and UV-resistant emulsion is prepared as follows:

[0051] ① Mix 90 parts D4 (octamethyltetrasiloxane), 6 parts AEO-9, 4 parts AEO-3, and 140 parts water, stir, and emulsify into an emulsion;

[0052] ② Add 12 parts dodecylbenzenesulfonic acid and 230 parts water to the reactor, stir and dissolve, heat to 80℃, add pre-emulsion dropwise, and then keep the temperature for 2 hours;

[0053] ③ Mix 50 parts water, 0.7 parts AEO-9, 0.4 parts AEO-3, 4 parts benzophenone-containing silane coupling agent, and 6 parts long-chain siloxane, emulsify and drip into the reactor, continue to keep the temperature for 2 hours, and then cool down to below 40℃;

[0054] ④ Slowly add 110 parts of silica sol, stir and mix well, neutralize and filter to obtain an organosilicon waterproof and UV-resistant emulsion.

[0055] The silica sol is made from tetraethyl orthosilicate, long-chain siloxane, ammonia, water, and emulsifier. First, 20 parts of tetraethyl orthosilicate, 6 parts of long-chain siloxane, 0.4 parts of AEO-9, and 0.7 parts of sodium dodecylbenzenesulfonate are added to 100 parts of water and emulsified and homogenized by high-speed shearing for 30 minutes. The mixture is then poured into a reaction vessel, heated to 60°C in a water bath, and ammonia is slowly added dropwise to adjust the pH value to 8-9. After maintaining the temperature for 6 hours, the mixture is cooled to obtain the silica sol.

[0056] Example 2:

[0057] A waterproof and UV-resistant outdoor fabric is composed of a base fabric, a functional film, and an adhesive. The surface of the base fabric is provided with a waterproof and UV-resistant functional layer. The base fabric is 100D*100D polyester spring spun yarn with a weight of 130g / m². 2 .

[0058] The preparation method of the waterproof and UV-resistant outdoor fabric is as follows:

[0059] 1) The base material fabric is equipped with a waterproof and UV-resistant functional layer.

[0060] ① Mix silicone waterproof and UV-resistant emulsion with water to prepare a waterproof and UV-resistant functional finishing solution with a concentration of 110 g / L; the preparation of silicone waterproof and UV-resistant emulsion is shown in Example 1;

[0061] ②The base material is immersed in a waterproof and UV-resistant finishing solution, with two dips and two slits, and the slit rate is 80%.

[0062] ③Drying at 100℃ and baking at 150℃ forms a waterproof and UV-resistant functional layer on the surface of the substrate fabric;

[0063] 2) Composite of substrate fabric and functional film

[0064] ④ Apply an adhesive to the surface of the substrate fabric and the functional film;

[0065] ⑤ The fabric and film are flatly stacked together, and then transferred to a heat press machine for heat pressing to complete the hot pressing and lamination, thus obtaining a waterproof and UV-resistant outdoor fabric.

[0066] The adhesive has a 30% surface coverage on the substrate fabric and functional film. The composite pressing pressure is 4 kg, the temperature is 110℃, the hot pressing time is 30 s, and the speed is 5 m / min.

[0067] The relevant properties of waterproof and UV-resistant outdoor fabrics are as follows:

[0068] UPF value > 50, T(UV) A The figure is 3.86%.

[0069] Water-repellent performance: 100 points;

[0070] Moisture permeability: 3853g / m 2 ·d.

[0071] UV protection performance: UV protection factor tester, used to test the fabric's UV protection factor (UPF) and UVA transmittance (T(UVA)). A ).

[0072] The test of moisture permeability shall be conducted in accordance with GB / T12704.1-2009 Textiles - Test Methods for Moisture Permeability of Fabrics - Part 1: Moisture Absorption Method.

[0073] Water-repellent performance is tested according to AATCC-22.

Claims

1. A waterproof and UV-resistant outdoor fabric, comprising a base fabric and a functional film bonded together with an adhesive, wherein the surface of the base fabric is provided with a waterproof and UV-resistant functional layer; the preparation method of the waterproof and UV-resistant outdoor fabric is as follows: 1) The base material fabric is equipped with a waterproof and UV-resistant functional layer. ① Prepare a waterproof and UV-resistant finishing solution; ②The base material is immersed in a waterproof and UV-resistant finishing solution, and then dipped and rubbed twice. ③Drying and baking form a waterproof and UV-resistant functional layer on the surface of the substrate fabric; 2) Composite of substrate fabric and functional film ④ Apply an adhesive to the surface of the substrate fabric and the functional film; ⑤ The fabric and film are flatly stacked together, and then transferred to a heat press machine for heat pressing to complete the hot pressing and lamination, thus obtaining a waterproof and UV-resistant outdoor fabric. The waterproof and UV-resistant finishing liquid is made by mixing silicone waterproof and UV-resistant emulsion with water.

2. The waterproof and UV-resistant outdoor fabric as described in claim 1, characterized in that, The aforementioned silicone waterproof and UV-resistant emulsion is prepared as follows: ① Mix 90 parts D4, 6 parts AEO-9, 4 parts AEO-3, and 140 parts water, stir, and emulsify into an emulsion; ② Add 12 parts dodecylbenzenesulfonic acid and 230 parts water to the reactor, stir and dissolve, heat to 80℃, add pre-emulsion dropwise, and then keep the temperature for 2 hours; ③ Mix 50 parts water, 0.7 parts AEO-9, 0.4 parts AEO-3, 4 parts benzophenone-containing silane coupling agent, and 6 parts long-chain siloxane, emulsify and drip into the reactor, continue to keep the temperature for 2 hours, and then cool down to below 40℃; ④ Slowly add 110 parts of silica sol, stir and mix well, neutralize and filter to obtain organosilicon waterproof and UV resistant emulsion.

3. The waterproof and UV-resistant outdoor fabric as described in claim 1, characterized in that: The silica sol is made from tetraethyl orthosilicate, long-chain siloxane, ammonia, water, and emulsifier. First, 20 parts of tetraethyl orthosilicate, 6 parts of long-chain siloxane, 0.4 parts of AEO-9, and 0.7 parts of sodium dodecylbenzenesulfonate are added to 100 parts of water and emulsified and homogenized by high-speed shearing for 30 minutes. The mixture is then poured into a reaction vessel, heated to 60°C in a water bath, and ammonia is slowly added dropwise to adjust the pH value to 8-9. After maintaining the temperature for 6 hours, the mixture is cooled to obtain the silica sol.

4. The waterproof and UV-resistant outdoor fabric as described in claim 1, characterized in that: The base fabric is 100D*100D polyester spring spun yarn with a weight of 130g / m². 2 .

5. The waterproof and UV-resistant outdoor fabric as described in claim 1, characterized in that: The functional film is a PU film with a thickness of 0.015 mm.

6. The waterproof and UV-resistant outdoor fabric as described in claim 1, characterized in that: The adhesive is a polyurethane hot melt adhesive.

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