A modified polyester multifunctional outdoor fabric

Abstract

The invention discloses a modified polyester multifunctional outdoor fabric, comprising: a modified polyester fabric layer, which is interwoven with warp and weft, and the warp and weft are 75D / 72F matte DTY anti-ultraviolet modified polyester yarn; a flame retardant and waterproof functional layer, which is formed by dipping and rolling silica sol and finishing with flame retardant and waterproof emulsion. The density of the warp and weft is 57×46, and the number of the warp is 9924. The modified polyester multifunctional outdoor fabric is prepared by: dipping the modified polyester fabric in silica sol, dipping and rolling twice, and drying; dipping the modified polyester fabric in flame retardant and waterproof emulsion, dipping and rolling twice, drying and baking. The modified polyester multifunctional outdoor fabric of the invention is based on a fabric woven with anti-ultraviolet modified polyester yarn, and phosphorus-modified silica sol and flame retardant and waterproof emulsion are applied to form a flame retardant and waterproof functional layer, and the fabric has good flame retardant, waterproof and other functions.

Description

Technical Field

[0001] The invention belongs to the field of textile fabrics, and in particular relates to a modified polyester multifunctional outdoor fabric. Background Art

[0002] With the increase of outdoor leisure sports, the demand for outdoor clothing fabrics has grown rapidly. Outdoor fabrics are generally made of polyester and other chemical fiber fabrics through calendering, coating, lamination and finishing such as waterproof, antibacterial, flame retardant, anti-ultraviolet, antistatic, etc. The fabrics usually have multiple composite functions such as waterproof, moisture permeable, breathable, water pressure resistant, windproof, warm, anti-ultraviolet, antistatic, antibacterial, flame retardant, etc.

[0003] Polyester has high strength, good elasticity, good heat resistance and thermal stability. The surface of polyester is smooth, corrosion-resistant, wear-resistant, light-resistant, and not easy to fade. Polyester fabrics have excellent performance and are widely used in outdoor clothing. To adapt to the use environment, outdoor fabrics should have excellent water repellency. In addition, polyester fibers are flammable and will continue to burn after contact with fire. In order to meet the relevant characteristics of outdoor fabrics, the performance of polyester fabrics needs to be improved accordingly. Summary of the invention

[0004] The present invention aims to provide a modified polyester multifunctional outdoor fabric to improve the waterproof and flame retardant properties of the polyester fabric.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions.

[0006] A modified polyester multifunctional outdoor fabric, comprising: a modified polyester fabric layer and a flame retardant and waterproof functional layer arranged on the surface of the modified polyester fabric layer;

[0007] The modified polyester fabric layer is interwoven with warp and weft threads, and the warp and weft threads are 75D / 72F matte DTY anti-ultraviolet modified polyester yarns;

[0008] The flame retardant and waterproof functional layer is treated by impregnation with silica sol and a finishing liquid containing an organic silicon flame retardant and waterproof emulsion.

[0009] The density of the warp and weft is 57×46, and the number of the warp threads is 9924.

[0010] The silica sol is prepared by:

[0011] 15 parts of tetraethyl orthosilicate, 8 parts of phosphorus-containing siloxane and 20 parts of ethanol were added to 300 parts of distilled water, and the pH value was adjusted to 5 with hydrochloric acid; the mixture was kept at 30° C. for 20 hours and then cooled to obtain silica sol.

[0012] The organic silicon flame retardant waterproof emulsion is prepared by:

[0013] Place 8.1 parts of isophorone diisocyanate into a reactor, stir and add 30 parts of polyether diol (PPG2000), control the temperature at 75°C, add 3-4 drops of dibutyltin dilaurate, and prepolymerize for 3 hours;

[0014] Add 1.1 parts of dimethylolpropionic acid and react for 2 hours;

[0015] Add 0.3 parts of 1,4-butanediol and carry out chain extension reaction for 2 hours;

[0016] Add 12.6 parts of dihydroxysiloxane and react for 1 hour. The product is cooled to 40°C, and 1 part of triethylamine is added to neutralize and react for 0.5 hours. Then, 210 parts of distilled water are added and stirred at high speed for self-emulsification for 1 hour.

[0017] The temperature was raised to 40°C, 16 parts of long-chain siloxane were slowly added dropwise, the pH value was adjusted to 8-9 with aqueous ammonia, the reaction was carried out for 4 hours, and the temperature was cooled to room temperature to obtain a silicone flame retardant and waterproof emulsion.

[0018] The modified polyester multifunctional outdoor fabric is prepared by:

[0019] The modified polyester fabric is immersed in silica sol, double-immersed and double-rolled, and then dried;

[0020] The modified polyester fabric is impregnated in a finishing liquid containing a silicone flame retardant and waterproof emulsion, and then subjected to double dipping and double rolling, drying and baking.

[0021] The modified polyester multifunctional outdoor fabric of the present invention is based on a fabric woven from anti-ultraviolet modified polyester yarn, to which phosphorus-modified silica sol and organic silicon flame retardant and waterproof emulsion are applied to form a flame retardant and waterproof functional layer. The fabric has good flame retardant, waterproof, anti-ultraviolet and other functions.

[0022] Silica sol has good thermal dispersibility and stability, and is a good flame retardant material that can fully penetrate into the fabric and adhere to the surface. Silica sol and flame retardant and waterproof substances form a dense carbon layer when burned, which improves the oxidation resistance of the carbon layer and has a good flame retardant effect.

[0023] The polyurethane in the silicone flame retardant waterproof emulsion contains organic siloxane side chains. Silicone has low surface tension. When forming a film, the silicone side chains will migrate to the air interface to form a low surface energy hydrophobic protective layer on the film surface. Together with the rough structure formed by nano-silicon dioxide on the fiber surface, it synergistically enhances the water-repellent properties of the fabric. DETAILED DESCRIPTION

[0024] The unit "part" described in the present invention refers to "part by mass".

[0025] The invention discloses a modified polyester multifunctional outdoor fabric, comprising: a modified polyester fabric layer and a flame retardant and waterproof functional layer arranged on the surface of the modified polyester fabric layer;

[0026] The modified polyester fabric layer is interwoven with warp and weft threads, and the warp and weft threads are 75D / 72F matte DTY anti-ultraviolet modified polyester yarns; the warp and weft threads have a density of 57×46 threads / cm, and the number of warp threads is 9924; the fabric is a small jacquard structure;

[0027] The modified polyester fabric layer is impregnated with silica sol, dried and baked with a finishing liquid containing an organic silicon flame retardant and waterproof emulsion to form a flame retardant and waterproof functional layer. The finishing liquid containing an organic silicon flame retardant and waterproof emulsion is prepared by mixing the organic silicon flame retardant and waterproof emulsion with water.

[0028] 75D / 72F matte DTY anti-ultraviolet modified polyester yarn is a commercially available product.

[0029] The silica sol is prepared by:

[0030] 15 parts of tetraethyl orthosilicate, 8 parts of phosphorus-containing siloxane and 20 parts of ethanol were added to 300 parts of distilled water, and the pH value was adjusted to 5 with hydrochloric acid; the mixture was kept at 30° C. for 20 hours and then cooled to obtain silica sol.

[0031] The phosphorus-containing siloxane is prepared by:

[0032] Add 0.15 mol of diethyl chlorophosphonate and 50 mL of tetrahydrofuran to a clean three-necked flask, and then add 0.15 mol of N-methylethanolamine and 0.15 mol of triethylamine under ice bath protection, and stir and react for 4 hours under ice bath. After suction filtration, remove tetrahydrofuran by vacuum distillation to obtain an intermediate.

[0033] Add 0.1 mol of the intermediate and 150 ml of DMF (N, N-dimethylformamide) to a four-necked flask equipped with a stirrer, a thermometer and a condenser, heat to 90°C with stirring, and activate for 30 minutes; add 0.1 mol of γ-(2,3-epoxypropoxy)propyltrimethoxysilane (KH560) under nitrogen protection, heat to 80°C, keep warm for 24 hours, filter, remove DMF from the filtrate by rotary evaporation, add ethyl acetate to dissolve, and then wash with dilute hydrochloric acid, 10% NaOH solution and saturated NaCl solution for 3 times respectively, and finally remove the solvent by rotary evaporation to obtain the product, i.e., phosphorus-containing siloxane. The reaction process is shown in reaction formulas 1 and 2.

[0034] The organic silicon flame retardant waterproof emulsion is prepared by:

[0035] Place 8.1 parts of isophorone diisocyanate into a reactor, stir and add 30 parts of polyether diol (PPG2000), control the temperature at 75°C, add 3-4 drops of dibutyltin dilaurate, and prepolymerize for 3 hours;

[0036] Add 1.1 parts of dimethylolpropionic acid and react for 2 hours;

[0037] Add 0.3 parts of 1,4-butanediol and carry out chain extension reaction for 2 hours;

[0038] Add 12.6 parts of dihydroxysiloxane and react for 1 hour. The resulting product is cooled to 40°C, and 1 part of triethylamine is added to neutralize and react for 0.5 hours. Then, 210 parts of distilled water are added and stirred at high speed for self-emulsification for 1 hour.

[0039] The temperature was raised to 40°C, 16 parts of long-chain siloxane were slowly added dropwise, the pH value was adjusted to 8-9 with aqueous ammonia, the reaction was carried out for 4 hours, and the temperature was cooled to room temperature to obtain a silicone flame retardant and waterproof emulsion.

[0040] The preparation method of the dihydroxysiloxane is as follows:

[0041] Add double-terminal epoxy polysiloxane (molecular weight 1050) and isopropanol solvent into the reactor, stir for 30 minutes, then slowly add N-(γ,-dimethylaminopropyl)-γ-aminopropylmethyldimethoxysilane (HD-121), heat the system to 50°C, keep the temperature for 4 hours, remove the solvent, and obtain dihydroxy siloxane. The molar ratio of double-terminal epoxy polysiloxane to HD-121 is 1:2. The reaction process is shown in the following formula.

[0042]

[0043] The long-chain siloxane is prepared as follows:

[0044] The measured phosphorus-containing siloxane and IPDI (isophorone diisocyanate) are loaded into the reactor, nitrogen is passed through, a small amount of dibutyltin dilaurate is added to catalyze the reaction, the temperature is slowly raised to 70°C, and the reaction is carried out for about 2 hours until the isocyanate value reaches the theoretical content; the measured monohydroxy-terminated dimethyl silicone oil (Mn=1000) is added, and the reaction is continued until the isocyanate value reaches the new theoretical content to obtain the product long-chain siloxane. The molar ratio of phosphorus-containing siloxane, IPDI, and monohydroxy-terminated dimethyl silicone oil is 1:1:1. The reaction process is shown in Reaction Formula 4.

[0045]

[0046] Weaving process of modified polyester fabric

[0047] Warp: Raw materials - slitting and warping - leash - drawing in, reeding - weaving;

[0048] Weft: Raw material - weaving.

[0049] Warp and weft specifications: 75D / 72F matte DTY anti-ultraviolet modified polyester yarn; total number of warp yarns 9924.

[0050] Fabric weaving specifications:

[0051] Width: 174cm, weft density: 46 shuttles, reed number: 19#, reed penetration: 3, total warp number: 9924, edge warp number: 77*2=154, basic organization: small jacquard.

[0052] Dyeing and finishing process of modified polyester fabric: scouring → pre-setting → dyeing → reduction cleaning

[0053] The scouring process is:

[0054] Scouring agent 1-2g / L

[0055] Sodium hydroxide concentration 2-5g / L

[0056] Bath ratio 1: 8

[0057] The fabric was treated at 100°C for 30 min.

[0058] Preforming process conditions

[0059] Temperature / ℃ 150~160

[0060] Time / s 30~40

[0061] Speed / (m / min) 30

[0062] Dyeing process recipe

[0063] Disperse dyes / %(owf) x

[0064] Dispersing and leveling agent / g·L -1 2

[0065] Anti-wrinkle softener / g·L -1 2

[0066] pH value (adjusted with glacial acetic acid) 5.5~6.5

[0067] Bath ratio 1:8

[0068] Dyeing process conditions and flow: Add disperse leveling agent and anti-wrinkle softener at room temperature → treat the semi-finished product in the auxiliary bath for 10 min → add disperse dye and dye for 10 min → heat up to 75℃ (1℃ / min) → keep warm for 10 min → heat up to 90℃ (0.5℃ / min) → keep warm for 25 min → heat up to 130℃ (1℃ / min) → keep warm for 30-45 min → cool down to 50℃ (1℃ / min) → drain → wash with water.

[0069] After dyeing, reduction cleaning is performed to remove the staining on the spandex component and the floating color on the surface of the polyester fiber.

[0070] Restore cleaning prescription

[0071] Reducing agent 2 g / L

[0072] Soda ash 2 g / L

[0073] Bath ratio 1:8

[0074] Temperature 85℃

[0075] Time: 20 minutes

[0076] After reduction cleaning, neutralize with acetic acid, then wash with warm water and cold water respectively and dry.

[0077] After weaving, dyeing and finishing, the modified polyester fabric is given corresponding functional finishing according to needs.

[0078] The modified polyester multifunctional outdoor fabric is prepared by:

[0079] The modified polyester fabric is dipped in silica sol, double dipped and double rolled, with a rolling rate of 90-100%, and dried at 80℃;

[0080] The modified polyester fabric is impregnated in a finishing liquid containing a silicone flame retardant and waterproof emulsion, dipped twice and rolled twice, with a rolling rate of 90-100%, and then dried at 100°C and baked at 170°C. Example

[0081] A modified polyester multifunctional outdoor fabric comprises: a modified polyester fabric layer and a flame retardant and waterproof functional layer arranged on the surface of the modified polyester fabric layer; the modified polyester fabric layer is impregnated with silica sol, dried and baked with a finishing liquid containing organic silicon flame retardant and waterproof emulsion to form the flame retardant and waterproof functional layer.

[0082] The modified polyester fabric layer is interwoven with warp and weft threads, and the warp and weft threads are 75D / 72F matte DTY anti-ultraviolet modified polyester yarns; the warp and weft threads have a density of 57×46 threads / cm, and the warp threads are 9924 threads; the fabric is a small jacquard structure;

[0083] Weaving process of modified polyester fabric

[0084] Warp: raw materials - slitting warping - twisting - drawing in, reeding - weaving;

[0085] Weft: Raw material - weaving;

[0086] Dyeing and finishing process of modified polyester fabric: scouring → pre-setting → dyeing → reduction cleaning;

[0087] The modified polyester multifunctional outdoor fabric is prepared by:

[0088] The modified polyester fabric is dipped in silica sol, double dipped and double rolled, with a rolling rate of 90-100%, and dried at 80℃;

[0089] The silicone flame retardant and waterproof emulsion is mixed with water to form a finishing liquid with a concentration of 120g / L. The modified polyester fabric is immersed in the finishing liquid, immersed twice and rolled twice, with a rolling rate of 90-100%. After drying at 100℃ and baking at 170℃, the modified polyester multifunctional outdoor fabric is made.

[0090] The silica sol is prepared by:

[0091] 15 parts of tetraethyl orthosilicate, 8 parts of phosphorus-containing siloxane and 20 parts of ethanol were added to 300 parts of distilled water, and the pH value was adjusted to 5 with hydrochloric acid; the mixture was kept at 30° C. for 20 hours and then cooled to obtain silica sol.

[0092] The organic silicon flame retardant waterproof emulsion is prepared by:

[0093] Place 8.1 parts of isophorone diisocyanate into a reactor, stir and add 30 parts of polyether diol (PPG2000), control the temperature at 75°C, add 3-4 drops of dibutyltin dilaurate, and prepolymerize for 3 hours;

[0094] Add 1.1 parts of dimethylolpropionic acid and react for 2 hours;

[0095] Add 0.3 parts of 1,4-butanediol and carry out chain extension reaction for 2 hours;

[0096] Add 12.6 parts of dihydroxysiloxane and react for 1 hour. The product is cooled to 40°C, and 1 part of triethylamine is added to neutralize and react for 0.5 hours. Then, 210 parts of distilled water are added and stirred at high speed for self-emulsification for 1 hour.

[0097] The temperature was raised to 40°C, 16 parts of long-chain siloxane were slowly added dropwise, the pH value was adjusted to 8-9 with aqueous ammonia, the reaction was carried out for 4 hours, and the temperature was cooled to room temperature to obtain a silicone flame retardant and waterproof emulsion.

[0098] The relevant properties of the modified polyester multifunctional outdoor fabric prepared in Example 1 were tested, and the results are as follows:

[0099] Water repellency: 100 points.

[0100] Static contact angle: 136°.

[0101] Flame retardant properties: afterflaming time 0s, smoldering time 0s, damaged length 9.8cm.

[0102] UPF value>50, T(UV A ) is 3.42%.

[0103] The water repellency test is based on AATCC-22.

[0104] Flame retardant properties are tested according to GB / T5455-2014 "Vertical method for testing the burning performance of textiles"

[0105] The static contact angle of the fabric is tested using a contact angle meter.

[0106] Anti-ultraviolet performance: UV protection factor tester, used to test the fabric's UV protection factor UPF and UVA (320-420nm) transmittance T (UVA).

Claims

1. A modified polyester multifunctional outdoor fabric, comprising: A modified polyester fabric layer and a flame retardant and waterproof functional layer arranged on the surface of the modified polyester fabric layer; The modified polyester fabric layer is interwoven with warp and weft threads, and the warp and weft threads are 75D / 72F matte DTY anti-ultraviolet modified polyester yarns; The flame retardant and waterproof functional layer is treated by dipping and rolling silica sol and finishing liquid containing organic silicon flame retardant and waterproof emulsion; The silica sol is prepared by: 15 parts of tetraethyl orthosilicate, 8 parts of phosphorus-containing siloxane, and 20 parts of ethanol are added to 300 parts of distilled water, and the pH value is adjusted to 5 with hydrochloric acid; the temperature is kept at 30°C for 20 hours and then cooled to obtain silica sol; The phosphorus-containing siloxane is prepared by: Add 0.15 mol of diethyl chlorophosphonate and 50 mL of tetrahydrofuran to a clean three-necked flask, and then add 0.15 mol of N-methylethanolamine and 0.15 mol of triethylamine under ice bath protection, and stir and react for 4 hours under ice bath. After suction filtration, remove tetrahydrofuran by vacuum distillation to obtain an intermediate. Add 0.1 mol of the intermediate and 150 ml of DMF (N, N-dimethylformamide) to a four-necked flask equipped with a stirrer, a thermometer and a condenser, heat to 90°C with stirring, and activate for 30 minutes; add 0.1 mol of γ-(2,3-epoxypropoxy)propyltrimethoxysilane (KH560) under nitrogen protection, heat to 80°C, keep warm for 24 hours, filter, remove DMF from the filtrate by rotary evaporation, add ethyl acetate to dissolve, and then wash with dilute hydrochloric acid, 10% NaOH solution and saturated NaCl solution for 3 times respectively, and finally remove the solvent by rotary evaporation to obtain the product, i.e., phosphorus-containing siloxane; The organic silicon flame retardant waterproof emulsion is prepared by: 8.1 parts of isophorone diisocyanate were placed in a reactor, stirred and 30 parts of polyether diol were added, the temperature was controlled at 75°C, 3-4 drops of dibutyltin dilaurate were added dropwise, and prepolymerization was carried out for 3 hours; Add 1.1 parts of dimethylolpropionic acid and react for 2 hours; Add 0.3 parts of 1,4-butanediol and carry out chain extension reaction for 2 hours; Add 12.6 parts of dihydroxysiloxane and react for 1 hour. The product is cooled to 40°C, and 1 part of triethylamine is added to neutralize and react for 0.5 hours. Then, 210 parts of distilled water are added and stirred at high speed for self-emulsification for 1 hour. The temperature was raised to 40°C, 16 parts of long-chain siloxane were slowly added dropwise, the pH value was adjusted to 8-9 with aqueous ammonia, the reaction was continued for 4 hours, and the temperature was lowered to room temperature to obtain an organic silicone flame retardant and waterproof emulsion; The dihydroxysiloxane is prepared as follows: Add in the reactor Molecular weight 1050 Double-terminal epoxy polysiloxane and isopropanol solvent, stir for 30 minutes, then slowly add N-(γ,-dimethylaminopropyl)-γ-aminopropylmethyldimethoxysilane (HD-121), wait for the system to heat to 50°C, keep the temperature for 4 hours, remove the solvent, and obtain dihydroxy siloxane. The molar ratio of double-terminal epoxy polysiloxane to HD-121 is 1:2; The long-chain siloxane is prepared as follows: The measured phosphorus-containing siloxane and IPDI (isophorone diisocyanate) are loaded into the reactor, and nitrogen is passed through the reactor for 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 carried out for 2 hours until the isocyanate value reaches the theoretical content. The measured monohydroxy-terminated dimethyl silicone oil is added and the reaction is continued until the isocyanate value reaches the new theoretical content to obtain the product long-chain siloxane.

2. The modified polyester multifunctional outdoor fabric according to claim 1, characterized in that: The density of the warp and weft is 57×46, and the number of the warp threads is 9924.

3. The modified polyester multifunctional outdoor fabric according to claim 1, characterized in that: The modified polyester multifunctional outdoor fabric is prepared by: The modified polyester fabric is immersed in silica sol, double-immersed and double-rolled, and then dried; The modified polyester fabric is impregnated in a finishing liquid containing a silicone flame retardant and waterproof emulsion, and then subjected to double dipping and double rolling, drying and baking.

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