A kind of anti-ultraviolet and anti-static thin polyester fabric

Abstract

The present invention discloses an anti-ultraviolet and anti-static thin polyester fabric, comprising a thin polyester fabric base material and a functional layer arranged on the surface of the base material; the thin polyester fabric base material is composed of warp and weft, the warp is 30D / 48F DTY, and the weft is 35D / 144F+20DSP DTY; the functional layer is formed by dipping the thin polyester fabric base material into silica sol and a finishing liquid containing an anti-ultraviolet and anti-static functional emulsion, followed by drying and baking. The preparation method of the anti-ultraviolet and anti-static thin polyester fabric is as follows: the thin polyester fabric is first dipped into silica sol, dipped twice and rolled twice, and dried; then the thin polyester fabric is dipped into a finishing liquid containing an anti-ultraviolet and anti-static functional emulsion, dipped twice and rolled twice, dried, and baked. The anti-ultraviolet and anti-static thin polyester fabric of the present invention is soft, compact, thin, and has good flame retardant, antistatic, anti-ultraviolet and other functions.

Description

Technical Field

[0001] The invention belongs to the field of textile fabrics, and in particular relates to an anti-ultraviolet and anti-static thin polyester fabric. Background Art

[0002] Lightweight winter clothing and cold-weather apparel have become a consumer trend. The lightness of fabrics is directly related to the overall weight of winter warm clothing. Thin fabrics improve the wearing comfort of winter warm clothing such as cotton coats. These thin fabrics are often made of fine-denier chemical fibers. Due to their poor moisture absorption and electrical conductivity, chemical fibers are flammable, prone to static electricity, and attract dust, which affects the comfort of clothing. Fine-denier fibers have a large specific surface area, and their color fastness is affected by ultraviolet rays. Thin polyester fabrics require dyeing and finishing processes to enhance their antistatic, UV resistance, and flame retardancy. Summary of the Invention

[0003] The present invention aims to provide an anti-ultraviolet and anti-static thin polyester fabric, which adopts a functional finishing agent to enhance the antistatic, anti-ultraviolet and flame retardant functions of the fabric.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions.

[0005] An anti-ultraviolet and anti-static thin polyester fabric, comprising a thin polyester fabric substrate and a functional layer arranged on the surface of the substrate;

[0006] The thin polyester fabric base material is composed of warp and weft, wherein the warp is 30D / 48F DTY and the weft is 35D / 144F+20DSP DTY;

[0007] The functional layer is formed by dipping a thin polyester fabric substrate into silica sol and a finishing liquid containing an organic silicon anti-ultraviolet and antistatic functional emulsion, followed by drying and baking.

[0008] The thin polyester fabric base material has a warp and weft density of 94×80, and 13626 warp threads.

[0009] The silica sol is prepared by:

[0010] First, 16 parts of tetraethyl orthosilicate, 4 parts of phosphorus-containing siloxane, 6 parts of SiPQAS monomer, and 20 parts of ethanol were added to 280 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 a silica sol.

[0011] The organosilicon anti-ultraviolet and antistatic functional emulsion is prepared by polymerization of acrylate monomer, styrene, vinyltriethoxysilane, SiPQAS monomer, SiPBPQAS monomer, initiator, emulsifier and water;

[0012] In parts by mass, the amount of each component used is 65 parts of acrylate monomer, 8 parts of styrene, 5 parts of vinyltriethoxysilane, 15 parts of SiPQAS monomer, 14 parts of SiPBPQAS monomer, 1 part of initiator, 10 parts of emulsifier, and 420 parts of water.

[0013] The preparation method of the organosilicon anti-ultraviolet and antistatic functional emulsion comprises the following steps:

[0014] 240 parts of water and 6 parts of emulsifier were added to the reactor and dissolved; 45 parts of acrylate monomer, 5 parts of vinyltriethoxysilane, 15 parts of SiPQAS monomer, and 14 parts of SiPBPQAS monomer were added, stirred, and emulsified into a milky white pre-emulsion; 20 parts of water and 0.7 parts of initiator were added to form an initiator aqueous solution;

[0015] 150 parts of water and 4 parts of emulsifier were added to the reactor and dissolved; 20 parts of acrylate monomer and 8 parts of styrene were added, stirred and emulsified; 0.3 parts of initiator and 10 parts of water were added, the temperature was raised to 80°C, and the reaction was carried out for 0.5 hours to obtain a blue seed emulsion;

[0016] Add the pre-emulsion and initiator aqueous solution dropwise into the reactor, and continue to heat and react for 2 hours after the addition is completed;

[0017] After the reaction is completed, the emulsion is cooled to room temperature and adjusted to neutral with a pH regulator to obtain an organosilicon anti-ultraviolet and antistatic functional emulsion.

[0018] As a further improvement, the thin polyester fabric substrate is also modified before the functional layer is provided. The modification method is as follows:

[0019] Prepare a water and ethanol solution in a mass ratio of 1:4, add 6% by mass of SiPQAS monomer, and adjust the pH value to 3-4 with acetic acid to form a modification solution; immerse a thin polyester fabric substrate in the modification solution in a bath ratio of 1:20 for 15 minutes; wash with water, and dry.

[0020] The preparation method of the anti-ultraviolet and antistatic thin polyester fabric is as follows:

[0021] The thin polyester fabric substrate is first immersed in silica sol, double-dipped and double-rolled, and then dried;

[0022] The thin polyester fabric base material is then immersed in a finishing liquid containing an organic silicone anti-ultraviolet and antistatic functional emulsion, dipped and rolled twice, and then dried and baked.

[0023] The anti-ultraviolet and anti-static thin polyester fabric is soft, compact, light and thin, and has good flame retardancy, anti-static, anti-ultraviolet and other functions.

[0024] The large surface area of ​​warp and weft in thin polyester fabrics allows UV rays to penetrate easily, destroying the dye structure and reducing the lightfastness of the dyed fabric. This thin polyester fabric substrate is impregnated with a silica sol modified with a phosphorus-containing quaternary ammonium salt monomer, followed by drying and baking to form a functional layer. The UV-shielding nanosilica and UV-absorbing benzophenone derivatives synergistically enhance the fabric's UV protection, reducing UV transmittance and protecting the fabric matrix. Furthermore, the fabric possesses excellent antistatic and flame-retardant properties. DETAILED DESCRIPTION

[0025] The unit "part" described in the present invention refers to "part by mass".

[0026] The present invention discloses an anti-ultraviolet and anti-static thin polyester fabric, comprising a thin polyester fabric base material and a functional layer arranged on the surface of the base material; the thin polyester fabric base material is formed by warp and weft, the warp is 30D / 48F DTY, and the weft is 35D / 144F+20DSP DTY;

[0027] The functional layer is formed by impregnating a thin polyester fabric substrate with silica sol and a finishing solution containing an organic silicone anti-UV and antistatic emulsion, followed by drying and baking. The finishing solution is made of the organic silicone anti-UV and antistatic emulsion and water. The concentration of the organic silicone anti-UV and antistatic emulsion can be determined based on the desired performance of the fabric.

[0028] The preparation method of the anti-ultraviolet and antistatic thin polyester fabric is as follows:

[0029] The thin polyester fabric substrate is first immersed in silica sol, double-dipped and double-rolled, and then dried;

[0030] The thin polyester fabric base material is then immersed in a finishing liquid containing an organic silicone anti-ultraviolet and antistatic functional emulsion, dipped and rolled twice, and then dried and baked.

[0031] As a further improvement, the thin polyester fabric substrate is also modified before the functional layer is provided. The modification method is as follows:

[0032] Prepare a water and ethanol solution in a mass ratio of 1:4, add 6% by mass of SiPQAS monomer, and adjust the pH value to 3-4 with acetic acid to form a modification solution; immerse a thin polyester fabric substrate in the modification solution in a bath ratio of 1:20 for 15 minutes; wash with water, and dry.

[0033] The silica sol is prepared by:

[0034] First, 16 parts of tetraethyl orthosilicate, 4 parts of phosphorus-containing siloxane, 6 parts of SiPQAS monomer, and 20 parts of ethanol were added to 280 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 a silica sol.

[0035] The organosilicon anti-ultraviolet and antistatic functional emulsion is prepared by polymerization of acrylate monomer, styrene, vinyltriethoxysilane, SiPQAS monomer, SiPBPQAS monomer, initiator, emulsifier and water;

[0036] In parts by mass, the amount of each component used is 65 parts of acrylate monomer, 8 parts of styrene, 5 parts of vinyltriethoxysilane, 15 parts of SiPQAS monomer, 14 parts of SiPBPQAS monomer, 1 part of initiator sodium persulfate, 10 parts of emulsifier, and 420 parts of water.

[0037] The preparation method of the organosilicon anti-ultraviolet and antistatic functional emulsion comprises the following steps:

[0038] 240 parts of water and 6 parts of emulsifier were added to the reactor and dissolved; 45 parts of acrylate monomer, 5 parts of vinyltriethoxysilane, 15 parts of SiPQAS monomer, and 14 parts of SiPBPQAS monomer were added, stirred, and emulsified into a milky white pre-emulsion; 20 parts of water and 0.7 parts of initiator were added to form an initiator aqueous solution;

[0039] 150 parts of water and 4 parts of emulsifier were added to the reactor and dissolved; 20 parts of acrylate monomer and 8 parts of styrene were added, stirred and emulsified; 0.3 parts of initiator and 10 parts of water were added, the temperature was raised to 80°C, and the reaction was carried out for 0.5 hours to obtain a blue seed emulsion;

[0040] Add the pre-emulsion and initiator aqueous solution dropwise into the reactor, and continue to heat and react for 2 hours after the addition is completed;

[0041] After the reaction is completed, the emulsion is cooled to room temperature and adjusted to neutral with a pH regulator to obtain an organosilicon anti-ultraviolet and antistatic functional emulsion.

[0042] The acrylic acid ester monomer is composed of methyl methacrylate and butyl acrylate in a mass ratio of 1:4.

[0043] The emulsifier is composed of a cationic emulsifier and a nonionic emulsifier. The cationic emulsifier is hexadecyltrimethylammonium bromide, and the nonionic emulsifier is OP-10 and emulsifier OS.

[0044] The phosphorus-containing siloxane is prepared by:

[0045] To a clean three-necked flask, add 0.15 mol of diethyl chlorophosphonate and 50 mL of tetrahydrofuran. Under nitrogen protection, add 0.15 mol of N-methylethanolamine and 0.15 mol of triethylamine. Stir and react for 4 hours under ice-bath conditions. After filtration, remove the tetrahydrofuran by vacuum distillation to obtain the intermediate.

[0046] To a four-necked flask equipped with a stirrer, thermometer, and condenser, add 0.1 mol of the intermediate and 150 ml of DMF (N,N-dimethylformamide). The mixture was heated to 90°C with stirring and activated for 30 minutes. Under nitrogen, 0.1 mol of γ-(2,3-epoxypropyloxy)propyltrimethoxysilane (KH560) was added, and the temperature was raised to 80°C. The mixture was kept warm for 24 hours, filtered, and the DMF in the filtrate was removed by rotary evaporation. Ethyl acetate was added for dissolution, and the mixture was washed three times each with dilute hydrochloric acid, 10% NaOH solution, and saturated NaCl solution. Finally, the solvent was removed by rotary evaporation to obtain the product, the phosphorus-containing siloxane. The reaction process is shown in Equations 1 and 2.

[0047]

[0048] The SiPQAS monomer is prepared by:

[0049] To a clean three-necked flask, add 0.1 mol of diethyl chlorophosphonate and 50 mL of tetrahydrofuran. Under nitrogen protection, add 0.1 mol of N,N-dimethylethanolamine and 0.1 mol of triethylamine. Stir and react for 4 hours under ice-cooling. After the reaction, if any precipitate is present, filter it and remove the tetrahydrofuran by vacuum distillation. Then, add 0.1 mol of γ-(2,3-epoxypropoxy)propyltrimethoxysilane and 100 mL of isopropanol to the above product. Stir and mix thoroughly. Reflux at 70°C for 10 hours. After the reaction, remove the isopropanol by rotary evaporation to obtain the final product. The reaction process is shown in Reaction Scheme 3.

[0050]

[0051] The SiPBPQAS monomer is prepared by:

[0052] Measured amounts of 4-hydroxybenzophenone and IPDI (isophorone diisocyanate) were charged into a reactor under nitrogen protection. A small amount of dibutyltin dilaurate was added to catalyze the reaction. The temperature was slowly raised to 70°C and the reaction was continued for approximately 2 hours until the isocyanate concentration reached the theoretical value. The measured amount of SiPQAS monomer was then added and the reaction continued until the isocyanate concentration reached the new theoretical value, yielding the product, phosphorus-containing PDMS. The molar ratio of 4-hydroxybenzophenone, IPDI, and SiPQAS monomers was 1:1:1. The reaction process is shown in Equation 4.

[0053]

[0054] Vinyltriethoxysilane is connected to the polyacrylate molecular chain through a C=C bond, and the alkoxy groups in the SiPQAS monomer and SiPBPQAS monomer condense with the alkoxy groups in vinyltriethoxysilane and are grafted on the side of the acrylate polymer main chain.

[0055] The thin polyester fabric substrate has the following specifications:

[0056] Warp: 30D / 48F DTY, Weft: 35D / 144F+20DSP DTY, polyester 91.5%, spandex 8.5%.

[0057] Total number of warps: 13626

[0058] Warp and weft density: 94×80 pieces / cm

[0059] Reed number: 21#;

[0060] Number of penetrations: 3 per tooth;

[0061] Fabric weight: 87g / m 2 .

[0062] Thin polyester fabric base material weaving process:

[0063] Warp yarn: raw materials - slitting and warping - leash - drawing in, reeding - weaving;

[0064] Weft: Raw material - weaving.

[0065] The thin polyester fabric base material grey cloth is subjected to appropriate scouring pre-treatment, alkali reduction, pre-setting drying, dyeing and other dyeing and finishing processes.

[0066] Pre-treatment before scouring: scouring agent 2g / L, sodium hydroxide concentration 4g / L, bath ratio 1:10, fabric treatment at 100℃ for 30min.

[0067] Presetting: temperature 150-170℃, time 30-4Os.

[0068] Alkali weight reduction: Prepare 30g / L sodium hydroxide solution according to the bath ratio of 1:20, put it into the thin polyester fabric substrate, treat it at 80℃ for 30min, neutralize it and wash it with water.

[0069] Dyeing process prescription

[0070] Disperse dyes / %(owf) x

[0071] Dispersing and leveling agent / g·L -1 2

[0072] pH value (adjusted with glacial acetic acid) 5.5~6.5

[0073] Bath ratio 1:8

[0074] Dyeing process conditions and flow: Add disperse leveling agent at room temperature → Treat the pre-formed semi-finished product in the auxiliary agent bath for 10 minutes → Add disperse dye and dye for 10 minutes → Heat to 75℃ (1℃ / min) → Keep warm for 10 minutes → Heat to 90℃ (0.5℃ / min) → Keep warm for 25 minutes → Heat to 130℃ (1℃ / min) → Keep warm for 30-45 minutes → Cool to 50℃ (1℃ / min) → Drain → Wash.

[0075] After dyeing, reduction cleaning is performed to remove floating colors on the surface of polyester fibers.

[0076] Reduction cleaning prescription / (g / L)

[0077] Reducing cleaning agent 2

[0078] Soda ash 2

[0079] Bath ratio 1:8

[0080] Temperature / ℃ 85

[0081] Time / min 20

[0082] After reduction cleaning, neutralize with acetic acid, then wash with warm water and cold water respectively and dry.

[0083] Example 1:

[0084] An anti-ultraviolet and anti-static thin polyester fabric, comprising a thin polyester fabric substrate and a functional layer arranged on the surface of the substrate;

[0085] The thin polyester fabric base material is composed of warp and weft, the warp is 30D / 48F DTY, the weft is 35D / 144F+20DSP DTY, polyester 91.5%, spandex 8.5%; the total number of warp roots is 13626, the warp and weft density is 94×80 roots / cm; the surface resistivity of the polyester fabric is >1×10 12 Ω;

[0086] The functional layer is formed by dipping a thin polyester fabric substrate into silica sol and a finishing liquid containing an organic silicon anti-ultraviolet and antistatic functional emulsion, and then drying and baking.

[0087] The preparation method of the anti-ultraviolet and antistatic thin polyester fabric is as follows:

[0088] 1) The thin polyester fabric base material grey cloth is subjected to appropriate scouring pre-treatment, pre-setting drying, alkali reduction, and dyeing processing;

[0089] 2) Modification treatment:

[0090] Prepare a water-ethanol solution at a mass ratio of 1:4, add 6% SiPQAS monomer, and adjust the pH value to 3-4 with acetic acid to form a modified solution; immerse the thin polyester fabric substrate in the modified solution at a bath ratio of 1:20 for 15 minutes; wash and dry.

[0091] 3) The thin polyester fabric substrate is first immersed in silica sol, double-dipped and double-rolled, with a rolling rate of 90%, and then dried at 80℃;

[0092] 4) The thin polyester fabric substrate is then immersed in a finishing solution containing a silicone anti-UV and antistatic emulsion, followed by two dips and two paddings, with a padding yield of 90%. The fabric is then dried at 100°C and baked at 170°C. The finishing solution is a mixture of silicone anti-UV and antistatic emulsion and water at a concentration of 120g / L.

[0093] The organosilicon anti-ultraviolet and antistatic functional emulsion is prepared by polymerization of 65 parts of acrylate monomer, 8 parts of styrene, 5 parts of vinyltriethoxysilane, 15 parts of SiPQAS monomer, 14 parts of SiPBPQAS monomer, 1 part of initiator sodium persulfate, 10 parts of emulsifier, and 420 parts of water, in parts by mass, in the following steps:

[0094] 240 parts of water and 6 parts of emulsifier were added to the reactor and dissolved; 45 parts of acrylate monomer, 5 parts of vinyltriethoxysilane, 15 parts of SiPQAS monomer, and 14 parts of SiPBPQAS monomer were added, stirred, and emulsified into a milky white pre-emulsion; 20 parts of water and 0.7 parts of initiator were added to form an initiator aqueous solution;

[0095] 150 parts of water and 4 parts of emulsifier were added to the reactor and dissolved; 20 parts of acrylate monomer and 8 parts of styrene were added, stirred and emulsified; 0.3 parts of initiator and 10 parts of water were added, the temperature was raised to 80°C, and the reaction was carried out for 0.5 hours to obtain a blue seed emulsion;

[0096] Add the pre-emulsion and initiator aqueous solution dropwise into the reactor, and continue to heat and react for 2 hours after the addition is completed;

[0097] After the reaction is completed, the emulsion is cooled to room temperature and adjusted to neutral with a pH regulator to obtain an organosilicon anti-ultraviolet and antistatic functional emulsion.

[0098] The acrylic acid ester monomer is composed of methyl methacrylate and butyl acrylate in a mass ratio of 1:4.

[0099] The emulsifier includes 6 parts of hexadecyltrimethylammonium bromide, 3 parts of OP-10 and 1 part of emulsifier OS.

[0100] The silica sol is prepared by:

[0101] First, 16 parts of tetraethyl orthosilicate, 4 parts of phosphorus-containing siloxane, 6 parts of SiPQAS monomer, and 20 parts of ethanol were added to 280 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 a silica sol.

[0102] The properties of the prepared anti-ultraviolet and anti-static thin polyester fabric are: surface resistivity 3.9×10 8 Ω; UPF value>50, T(UV A ) is 4.17%; flame retardant performance: afterburning time 0s, smoldering time 0s, damaged length 10.3cm.

[0103] The flame retardant performance is tested according to GB / T5455-2014 "Textiles Burning Performance Test Vertical Method".

[0104] Anti-ultraviolet performance: UV protection factor tester, to test the fabric's UV protection factor UPF and UVA (320-420nm) transmittance T(UVA).

[0105] Antistatic performance test: Use a surface resistivity meter to measure the surface resistivity of the fabric.

Claims

1. A thin polyester fabric with UV resistance and antistatic properties, comprising a thin polyester fabric substrate and a functional layer disposed on the surface of the substrate; The thin polyester fabric base material is composed of warp and weft, wherein the warp is 30D / 48F DTY and the weft is 35D / 144F+20DSP DTY; The functional layer is formed by dipping a thin polyester fabric substrate into a finishing liquid containing silica sol and an organic silicon anti-ultraviolet and anti-static functional emulsion, followed by drying and baking. The silica sol is prepared by adding 16 parts of tetraethyl orthosilicate, 4 parts of phosphorus-containing siloxane, 6 parts of SiPQAS monomer, and 20 parts of ethanol to 280 parts of distilled water, adjusting the pH to 5 with hydrochloric acid; keeping the temperature at 30°C for 20 hours, and cooling to obtain the silica sol; the phosphorus-containing siloxane has a structure shown in Formula 1, and the SiPQAS monomer has a structure shown in Formula 2; The organosilicon anti-ultraviolet and antistatic functional emulsion is prepared by polymerization of acrylate monomer, styrene, vinyltriethoxysilane, SiPQAS monomer, SiPBPQAS monomer, initiator, emulsifier and water; the structure of the SiPBPQAS monomer is shown in Formula 3; The amounts of each component used, by mass, are 65 parts of acrylate monomer, 8 parts of styrene, 5 parts of vinyltriethoxysilane, 15 parts of SiPQAS monomer, 14 parts of SiPBPQAS monomer, 1 part of initiator, 10 parts of emulsifier, and 420 parts of water; The preparation method of the organosilicon anti-ultraviolet and antistatic functional emulsion comprises the following steps: 240 parts of water and 6 parts of emulsifier were added to the reactor and dissolved; Then add 45 parts of acrylate monomer, 5 parts of vinyl triethoxysilane, 15 parts of SiPQAS monomer, and 14 parts of SiPBPQAS monomer, stir, and emulsify into a milky white pre-emulsion; 20 parts of water and 0.7 parts of initiator form an initiator aqueous solution; 150 parts of water and 4 parts of emulsifier were added to the reactor and dissolved; 20 parts of acrylate monomer and 8 parts of styrene were added, stirred and emulsified; 0.3 parts of initiator and 10 parts of water were added, the temperature was raised to 80°C, and the reaction was carried out for 0.5 hours to obtain a blue seed emulsion; Add the pre-emulsion and initiator aqueous solution dropwise into the reactor, and continue to heat and react for 2 hours after the addition is completed; After the reaction is completed, the emulsion is cooled to room temperature and adjusted to neutral with a pH regulator to obtain an anti-ultraviolet and antistatic functional emulsion.

2. The anti-ultraviolet and anti-static thin polyester fabric according to claim 1, characterized in that: The thin polyester fabric substrate is further subjected to a modification treatment before the functional layer is provided, and the modification treatment method is as follows: Prepare a water and ethanol solution in a mass ratio of 1:4, add 6% by mass of SiPQAS monomer, and adjust the pH value to 3-4 with acetic acid to form a modification solution; immerse a thin polyester fabric substrate in the modification solution in a bath ratio of 1:20 for 15 minutes; wash with water, and dry.

3. The method for preparing the anti-ultraviolet and antistatic thin polyester fabric according to claim 1 is as follows: The thin polyester fabric substrate is first immersed in silica sol, double-dipped and double-rolled, and then dried; The thin polyester fabric base material is then immersed in a finishing liquid containing an organic silicone anti-ultraviolet and antistatic functional emulsion, dipped and rolled twice, and then dried and baked.

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