Preparation method of low-hole-number composite lining

Abstract

The invention discloses a preparation method of a low-pore-number composite lining, and belongs to the technical field of textiles. The preparation method of the low-hole-number composite lining comprises the following steps: (1) weaving polyester yarns into gray fabric; (2) shaping and preshrinking the gray fabric; (3) dyeing the set and pre-shrunk gray fabric; (4) shaping and finishing the dyed gray fabric to obtain a composite lining; wherein the dye for dyeing is obtained by reacting N-amino-4-N, N-dimethyl-1, 8-naphthalimide with ferrocene dicarboxaldehyde, and the dye for dyeing is obtained by reacting N-amino-4-N, N-dimethyl-1, 8-naphthalimide with ferrocene The setting agent for setting and finishing contains a hydrophilic softening agent, the hydrophilic softening agent is obtained by mixing polyether phenyl silicone oil with a compound emulsifier and deionized water, and the polyether phenyl silicone oil is obtained by reacting side chain hydrogen-containing silicone oil, allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane and 1-(4-vinyl-phenyl)-ethanone; the prepared low-hole-number composite lining is good in hydrophilicity, color fastness and softness.

Description

Technical Field

[0001] This invention relates to the field of textile technology, specifically to a method for preparing a low-pore-count composite lining fabric. Background Technology

[0002] Lining fabric, as an inner lining material used in clothing, footwear, bags, and other products in combination with the main fabric, not only protects the main fabric and increases the product's crispness and aesthetics, but also directly affects the product's wearing comfort, durability, and overall quality. As consumers increasingly demand comfort, functionality, and environmental friendliness in textiles, higher requirements are being placed on the performance of lining materials, especially in terms of hydrophilicity, colorfastness, and softness.

[0003] Currently, most lining fabrics on the market are made of synthetic fibers such as polyester and nylon. These fibers have advantages such as high strength and good dimensional stability, but they also have obvious drawbacks: their hydrophobicity leads to poor moisture absorption and wicking properties, making them feel stuffy when worn; at the same time, the smooth surface of untreated synthetic fibers results in weak binding force with dyes, leading to generally low color fastness to abrasion and washing after dyeing. They are prone to fading and discoloration after repeated rubbing or washing, affecting the product's appearance and lifespan. Furthermore, some lining fabrics use a lower weave density (i.e., low hole count) to pursue cost control or a specific style. While this reduces material costs, it often results in a loose structure and large gaps between fibers. This not only further exacerbates the poor color fastness but also makes the fabric feel stiff and lacking in softness, making it difficult to meet the needs of high-end products.

[0004] Therefore, developing a preparation method that can improve the properties of low-pore-count composite lining fabrics and significantly enhance their hydrophilicity, color fastness, and softness has become a technical problem that urgently needs to be solved in the field of textile technology. Summary of the Invention

[0005] The purpose of this invention is to provide a method for preparing a low-pore-count composite lining fabric to solve the technical problems mentioned in the background section.

[0006] The technical solution to achieve the objective of this invention is: In a first aspect, the present invention provides a method for preparing a low-pore-count composite lining fabric, comprising the following preparation steps: (1) Weave polyester yarn into greige fabric; (2) The fabric is pre-shrunk and shaped; (3) Dye the pre-shrinked fabric; (4) The dyed greige fabric is shaped and finished to obtain the composite lining fabric; Furthermore, the pre-shrinking and shaping are carried out in a tenter frame, with the upper overfeed being +9~+11%, the lower overfeed being +6~+8%, the fabric output overfeed being +0.6~+1.0%, the weft straightener tension being 95~97N, and the rolling mill tension being 25~30N. The tenter frame includes seven drying chambers, specifically the first drying chamber, the second drying chamber, the third drying chamber, the fourth drying chamber, the fifth drying chamber, the sixth drying chamber, and the seventh drying chamber, with temperatures of 140℃, 150℃, 170℃, 170℃, 170℃, 170℃, and 170℃ respectively.

[0007] Furthermore, the dyeing steps in step (3) include room temperature dyeing, high temperature and high pressure dyeing, water washing, reduction cleaning, and water washing out of the fabric.

[0008] Furthermore, the high-temperature and high-pressure staining temperature is 130~140℃, the holding time is 40~60min, and the heating rate to the staining temperature is 1~2℃ / min.

[0009] Furthermore, the dyeing solution used in step (3) includes 4.5-4.7% OWF dye, 1-2 g / L alkali-resistant leveling agent, and water as a solvent.

[0010] Further, the dye is obtained by reacting N-amino-4-N,N-dimethyl-1,8-naphthalimide with 1,1'-ferrocenedicarboxaldehyde. The specific preparation method is as follows: Under nitrogen protection, 2 parts by mass of 4-(N,N-dimethylamino)-1,8-naphthalenedicarboxylic anhydride are mixed with 40-50 parts by mass of ethanol, and 1-1.2 parts by mass of 80wt% hydrazine hydrate solution are added dropwise. The mixture is stirred at room temperature for 1-3 hours, filtered, washed with ethanol, dried, and recrystallized from chlorobenzene to obtain N-amino-4-N,N-dimethylamino(naphthalimide)-1,8-naphthalenedicarboxylic anhydride. N-amino-4-N,N-dimethyl-1,8-naphthalimide; 2 parts by mass of N-amino-4-N,N-dimethyl-1,8-naphthalimide, 1,1'-ferrocene dicarboxaldehyde, and 50-60 parts by mass of ethanol were mixed with 0.5-0.6 parts by mass of glacial acetic acid, and the mixture was heated under reflux for 5-7 hours. After the reflux, the mixture was subjected to column chromatography with a mixture of dichloromethane and acetone at a volume ratio of 15:1 to obtain the dye; wherein the molar ratio of N-amino-4-N,N-dimethyl-1,8-naphthalimide to 1,1'-ferrocene dicarboxaldehyde was 1:2-2.4.

[0011] Furthermore, the shaping and finishing step involves immersion and rolling in a shaping agent, followed by alkali treatment, drying, and shaping.

[0012] Furthermore, the setting agent used for setting and finishing includes the following components in the following proportions: 10-15 g / L of hydrophilic softener, 8-10 g / L of antistatic agent, 1-2 g / L of glacial acetic acid, and water as the solvent; the hydrophilic softener is obtained by mixing polyether phenyl silicone oil with a composite emulsifier and deionized water, and has a solid content of 28-32%, wherein the amount of composite emulsifier added is 0.1-0.2 times the mass of polyether phenyl silicone oil.

[0013] Further, the polyether phenyl silicone oil is obtained by reacting side-chain hydrogen-containing silicone oil, allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, and 1-(4-vinyl-phenyl)-ethyl ketone. The specific preparation steps are as follows: Under nitrogen protection, side-chain hydrogen-containing silicone oil, allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, 1-(4-vinyl-phenyl)-ethyl ketone, and isopropanol are added and stirred until uniformly mixed. The mixture is then heated to 80-85°C in a constant-temperature oil bath, and 5-15 ppm of chloroplatinic acid catalyst is added. The mixture is then heated further. The reaction is carried out at a warm temperature for 2-3 hours. After the reaction is completed, the low-boiling part is removed by vacuum to obtain polyether phenyl silicone oil. The molar ratio of silicon-hydrogen bonds to carbon-carbon double bonds is 1-1.1:1, the molar ratio of allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, and 1-(4-vinyl-phenyl)-ethyl ketone is 4:1:4-5, and the amount of isopropanol added is 15-20% of the total mass of the side-chain hydrogen-containing silicone oil, allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, 1-(4-vinyl-phenyl)-ethyl ketone, and isopropanol.

[0014] Furthermore, the alkali treatment solution is obtained by mixing 10% sodium hydroxide solution with ethanol at a volume ratio of 4~5:15, the alkali treatment temperature is room temperature, and the alkali treatment time is 4~12h.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects: (1) The method for preparing the low-pore-count composite lining fabric of the present invention involves first weaving polyester yarn into a greige fabric; then pre-shrinking the greige fabric; then dyeing the pre-shrinked greige fabric; and finally finishing the dyed greige fabric to obtain the composite lining fabric. The low-pore-count composite lining fabric obtained has good hydrophilicity, abrasion fastness, wash fastness and softness.

[0016] (2) The dye used in this invention for dyeing low-pore-count composite lining fabric is prepared by reacting the amino group of N-amino-4-N,N-dimethyl-1,8-naphthalimide with the aldehyde group of 1,1'-ferrocene dicarboxaldehyde. It belongs to the 1,8-naphthalimide fluorescent dye class. Due to the high rigidity and large coplanarity of the molecular structure of 1,8-naphthalimide fluorescent dye, it not only improves the stability of the dye molecule itself, but also reduces its interaction with solute and solvent molecules, thereby reducing the energy loss of the molecular structure. Fabrics dyed with this dye have bright colors, high fluorescence intensity, and excellent wash fastness, rubbing fastness and thermal stability. In addition, the 1,8-naphthalimide dye molecule has a small volume and is insoluble in water, making it particularly suitable for dyeing polyester fibers. At the same time, after grafting ferrocene structure onto the original dye, the aromatic plane increases, the molecular weight increases, and the van der Waals force between it and the fiber is strengthened, thus having high soap fastness.

[0017] (3) The present invention adds at least a hydrophilic softener and an antistatic agent to the setting agent used for setting and finishing, which can significantly improve the soft feel and antistatic properties of low-pore-count composite lining fabric, thereby improving its wearing comfort and safety.

[0018] (4) The hydrophilic softener of the present invention, through precise molecular design, uses side-chain hydrogen-containing silicone oil as the backbone, and utilizes the Si-H bonds in its molecule to undergo hydrosilylation reaction with the carbon-carbon double bonds contained in allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane and 1-(4-vinyl-phenyl)-ethyl ketone to achieve covalent grafting of the three on the silicone oil main chain. Among them, the polyoxyalkyl ether segment gives the fabric excellent hydrophilicity and lubricity, significantly improving wearing comfort; vinyltriethoxysilane provides hydrolyzable crosslinking sites to form a three-dimensional network film on the fiber surface, improving the washability of low-pore-count composite lining; the rigid benzene ring structure of 1-(4-vinyl-phenyl)-ethyl ketone helps to introduce appropriate support in the soft matrix, balancing the flexibility and morphological stability of the fabric. Through structural synergy, the hydrophilic softener not only effectively improves the soft hand feel and dynamic flexibility of low-pore-count composite lining, but also significantly enhances its rubbing fastness, meeting the comprehensive needs of high-performance functional fabrics.

[0019] (5) In the finishing process, the present invention adopts a "one dip and one roll" process, which allows the dyed fabric to be fully immersed in the finishing agent and then subjected to alkali treatment. The acetophenone in the finishing agent reacts with the incompletely reacted ferrocene formaldehyde structure on the dyed fabric fiber under alkaline conditions to generate ferrocene-based chalcone with a conjugated structure in situ. This chalcone structure not only acts as a chemical "bridging unit" to firmly anchor the hydrophilic softener in the finishing agent to the fiber surface through covalent bonds, but also greatly improves its washability and abrasion resistance. This enhances the overall colorfastness of the fabric. Simultaneously, the ferrocene group itself possesses excellent light stability and free radical scavenging capabilities. When combined with the chalcone conjugated system, it further strengthens the absorption and energy dissipation of ultraviolet light, effectively inhibiting photo-oxidative degradation. This not only achieves functional fixation of the softener but also further enhances the excellent UV aging resistance of the low-pore composite lining, significantly delaying the decline in mechanical properties and other properties during long-term drying or outdoor use, thus comprehensively improving the product's service life and environmental adaptability. Detailed Implementation

[0020] To better understand the above technical solution, the following will provide a detailed explanation of the technical solution in conjunction with specific implementation methods.

[0021] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention.

[0022] The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and should not be used to limit the scope of protection of the present invention.

[0023] The penetrant is penetrant F-134 produced by Dongguan Kefeng Textile Auxiliaries Industry Co., Ltd. The emulsifier is AEO-9, produced by Jiangsu Haian Petrochemical Plant. The whitening agent is FB-351, manufactured by Wuhan Haishan Technology Co., Ltd. The alkaline reducing cleaning agent is DR-84CN, produced by Wuxi Derong Chemical Co., Ltd. The polyester yarn used is 30D / 12F polyester yarn; The alkali-resistant leveling agent used is alkali-resistant polyester leveling agent TF-212WL; The composite emulsifier is obtained by compounding emulsifier 1350, emulsifier 1370 and emulsifier 1390 in a mass ratio of 1:1:2; The side-chain hydrogen-containing silicone oil was produced by Zhejiang Chuanhua Chemical Co., Ltd., and contained 0.18 mol of Si-H bonds. Allyl alcohol polyoxyalkyl ether uses allyl alcohol polyoxyalkyl ether F-6.

[0024] Example 1 A method for preparing a low-pore-count composite lining fabric includes the following preparation steps: (1) The polyester yarn is woven into a grey fabric with a width of 189cm and a weaving density of 75. 57 threads / inch; (2) The fabric is pre-shrunk to a width of 120cm and a weft density of 25 threads / cm. The pre-shrunk is carried out in a tenter frame with an upper overfeed of +9 to +11%, a lower overfeed of +6 to +8%, an output overfeed of +0.6 to +1.0%, a weft straightener tension of 95 to 97N, and a rolling mill tension of 25 to 30N. The tenter frame includes seven drying chambers, namely the first drying chamber, the second drying chamber, the third drying chamber, the fourth drying chamber, the fifth drying chamber, the sixth drying chamber, and the seventh drying chamber. The temperatures of the first drying chamber, the second drying chamber, the third drying chamber, the fourth drying chamber, the fifth drying chamber, the sixth drying chamber, and the seventh drying chamber are 140℃, 150℃, 170℃, 170℃, 170℃, 170℃, and 170℃, respectively, to obtain the pre-shrunk fabric. (3) Dyeing the pre-shrunken fabric: The pre-shrunken fabric is placed into the warp dyeing machine at room temperature, the machine cover is sealed, and the temperature is raised to 80°C at 2°C / min. 1.5 g / L of penetrant, 1.5 g / L of caustic soda, 0.8 g / L of emulsifier, 2 g / L of whitening agent, and 4 g / L of hydrogen peroxide are added. Then the temperature is raised to 110°C at 1°C / min and kept at that temperature for 4 min. Then the temperature is raised to 120°C at 1°C / min and kept at that temperature for 20 min. Drain the dye liquor; add water, 4.5% OWF dye, and 1 g / L alkali-resistant leveling agent, then raise the temperature to 140℃ at 1℃ / min, keep it at that temperature for 40 min, lower the temperature to 75℃ at 2.5℃ / min, drain the dye liquor, and the dyeing liquor ratio is 1:30; add water, 0.8 g / L alkaline reducing cleaning agent DR-84CN, and 1 g / L glacial acetic acid, raise the temperature to 80℃ at 3℃ / min, wash for 20 min, drain the dye liquor, and obtain the dyed greige fabric; (4) The dyed fabric is shaped and finished to obtain the composite lining fabric; specifically: the dyed fabric is dipped and rolled in a setting agent with a roll-off rate of 80% and a bath ratio of 1:20, then immersed in an alkali treatment solution for 4 hours, followed by rolling with a roll-off rate of 80%, and then dried at 105℃ for 10 hours. The fabric is then fed into a tenter frame for setting. The upper overfeed of the tenter frame is +9~+10.5%, the lower overfeed is +5~+7%, the fabric output overfeed is +0.7~+1.2%, the weft tension is 95~97N, and the rolling mill tension is 25~30N. The tenter frame includes seven drying chambers, specifically the first drying chamber, the second drying chamber, the third drying chamber, the fourth drying chamber, the fifth drying chamber, the sixth drying chamber, and the seventh drying chamber. The temperatures of the first drying chamber, the second drying chamber, the third drying chamber, the fourth drying chamber, the fifth drying chamber, the sixth drying chamber, and the seventh drying chamber are 140℃, 150℃, 170℃, 170℃, 170℃, 170℃, and 170℃, respectively.

[0025] The specific preparation method of the dye is as follows: Under nitrogen protection, 2 parts by mass of 4-(N,N-dimethylamino)-1,8-naphthalenedicarboxylic anhydride and 40 parts by mass of ethanol are mixed, and 1 part by mass of 80 wt% hydrazine hydrate solution is added dropwise. The mixture is stirred at room temperature for 1 hour and filtered. The mixture is washed with ethanol, dried, and recrystallized with chlorobenzene to obtain N-amino-4-N,N-dimethyl-1,8-naphthalimide. 2 parts by mass of N-amino-4-N,N-dimethyl-1,8-naphthalimide, 1,1'-ferrocene dicarboxaldehyde, and 50 parts by mass of ethanol are mixed, and 0.5 parts by mass of glacial acetic acid is added dropwise. The mixture is heated under reflux for 5 hours. After the reflux, column chromatography is performed using a mixture of dichloromethane and acetone with a volume ratio of 15:1 to obtain the dye. The molar ratio of N-amino-4-N,N-dimethyl-1,8-naphthalimide to 1,1'-ferrocene dicarboxaldehyde is 1:2.

[0026] The finishing agent used for shaping and finishing includes the following components: 10 g / L hydrophilic softener, 8 g / L antistatic agent, 1 g / L glacial acetic acid, and water as the solvent; the hydrophilic softener is obtained by mixing polyether phenyl silicone oil with a composite emulsifier and deionized water, and has a solid content of 28%, wherein the amount of composite emulsifier added is 0.1 times the mass of polyether phenyl silicone oil.

[0027] The specific preparation steps of the polyether phenyl silicone oil are as follows: Under nitrogen protection, side-chain hydrogen-containing silicone oil, allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, 1-(4-vinyl-phenyl)-ethyl ketone, and isopropanol are added and stirred until uniform. The mixture is heated to 80°C in a constant temperature oil bath, and 5 ppm of chloroplatinic acid catalyst is added. The reaction is continued at a constant temperature for 2 hours. After the reaction is completed, the low-boiling part is removed by vacuum to obtain polyether phenyl silicone oil. The molar ratio of silicon-hydrogen bonds to carbon-carbon double bonds is 1:1, the molar ratio of allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, and 1-(4-vinyl-phenyl)-ethyl ketone is 4:1:4, and the amount of isopropanol added is 15% of the total mass of side-chain hydrogen-containing silicone oil, allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, 1-(4-vinyl-phenyl)-ethyl ketone, and isopropanol.

[0028] The alkaline treatment solution is obtained by mixing 10% sodium hydroxide solution with ethanol at a volume ratio of 4:15.

[0029] Example 2 A method for preparing a low-pore-count composite lining fabric includes the following preparation steps: (1) The polyester yarn is woven into a grey fabric with a width of 189cm and a weaving density of 75. 57 threads / inch; (2) The fabric is pre-shrunk to a width of 120cm and a weft density of 25 threads / cm. The pre-shrunk is carried out in a tenter frame with an upper overfeed of +9 to +11%, a lower overfeed of +6 to +8%, an output overfeed of +0.6 to +1.0%, a weft straightener tension of 95 to 97N, and a rolling mill tension of 25 to 30N. The tenter frame includes seven drying chambers, namely the first drying chamber, the second drying chamber, the third drying chamber, the fourth drying chamber, the fifth drying chamber, the sixth drying chamber, and the seventh drying chamber. The temperatures of the first drying chamber, the second drying chamber, the third drying chamber, the fourth drying chamber, the fifth drying chamber, the sixth drying chamber, and the seventh drying chamber are 140℃, 150℃, 170℃, 170℃, 170℃, 170℃, and 170℃, respectively, to obtain the pre-shrunk fabric. (3) Dyeing the pre-shrinked fabric: The pre-shrinked fabric is placed into a warp dyeing machine at room temperature, the machine cover is sealed, and the temperature is increased to 80°C at 2°C / min. 1.5 g / L of penetrant, 1.5 g / L of caustic soda, 0.8 g / L of emulsifier, 2 g / L of whitening agent, and 4 g / L of hydrogen peroxide are added. Then the temperature is increased to 110°C at 1°C / min and held for 4 min. Then the temperature is increased to 120°C at 1°C / min and held for 20 min. Drain the dye liquor; add water, 4.6% OWF dye, and 1.5 g / L alkali-resistant leveling agent, then heat to 130℃ at 1℃ / min, keep warm for 40 min, cool to 80℃ at 2.5℃ / min, drain the dye liquor, the dyeing liquor ratio is 1:30; add water, 0.8 g / L alkaline reducing cleaning agent DR-84CN, and 1 g / L glacial acetic acid, heat to 80℃ at 3℃ / min, wash for 20 min, drain the dye liquor, and obtain the dyed greige fabric; (4) The dyed fabric is shaped and finished to obtain the composite lining fabric; specifically: the dyed fabric is dipped and rolled in a setting agent with a roll-off rate of 80% and a bath ratio of 1:20, then immersed in an alkaline treatment solution for 8 hours, followed by rolling with a roll-off rate of 80%, and then dried at 105℃ for 10 hours. The fabric is then fed into a tenter frame for setting. The upper overfeed of the tenter frame is +9~+10.5%, the lower overfeed is +5~+7%, the fabric output overfeed is +0.7~+1.2%, the weft tension is 95~97N, and the rolling mill tension is 25~30N. The tenter frame includes seven drying chambers, specifically the first drying chamber, the second drying chamber, the third drying chamber, the fourth drying chamber, the fifth drying chamber, the sixth drying chamber, and the seventh drying chamber. The temperatures of the first drying chamber, the second drying chamber, the third drying chamber, the fourth drying chamber, the fifth drying chamber, the sixth drying chamber, and the seventh drying chamber are 140℃, 150℃, 170℃, 170℃, 170℃, 170℃, and 170℃, respectively.

[0030] The specific preparation method of the dye is as follows: Under nitrogen protection, 2 parts by mass of 4-(N,N-dimethylamino)-1,8-naphthalenedicarboxylic anhydride and 48 parts by mass of ethanol are mixed, and 1.1 parts by mass of 80 wt% hydrazine hydrate solution is added dropwise. The mixture is stirred at room temperature for 2 hours and filtered. The mixture is washed with ethanol, dried, and recrystallized with chlorobenzene to obtain N-amino-4-N,N-dimethyl-1,8-naphthaleneimide. 2 parts by mass of N-amino-4-N,N-dimethyl-1,8-naphthaleneimide, 1,1'-ferrocenedicarboxaldehyde, and 55 parts by mass of ethanol are mixed, and 0.55 parts by mass of glacial acetic acid is added dropwise. The mixture is heated under reflux for 6 hours. After the reflux, column chromatography is performed using a mixture of dichloromethane and acetone with a volume ratio of 15:1 to obtain the dye. The molar ratio of N-amino-4-N,N-dimethyl-1,8-naphthaleneimide to 1,1'-ferrocenedicarboxaldehyde is 1:2.2.

[0031] The finishing agent used for shaping and finishing includes the following components: 15 g / L hydrophilic softener, 9 g / L antistatic agent, 1.5 g / L glacial acetic acid, and water as the solvent; the hydrophilic softener is obtained by mixing polyether phenyl silicone oil with a composite emulsifier and deionized water, and has a solid content of 30%, wherein the amount of composite emulsifier added is 0.15 times the mass of polyether phenyl silicone oil.

[0032] The specific preparation steps of the polyether phenyl silicone oil are as follows: Under nitrogen protection, side-chain hydrogen-containing silicone oil, allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, 1-(4-vinyl-phenyl)-ethyl ketone, and isopropanol are added and stirred until uniform. The mixture is heated to 83°C in a constant temperature oil bath, and 10 ppm of chloroplatinic acid catalyst is added. The reaction is continued at a constant temperature for 3 hours. After the reaction is completed, the low-boiling part is removed by vacuum to obtain polyether phenyl silicone oil. The molar ratio of silicon-hydrogen bonds to carbon-carbon double bonds is 1.1:1, the molar ratio of allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, and 1-(4-vinyl-phenyl)-ethyl ketone is 4:1:5, and the amount of isopropanol added is 20% of the total mass of side-chain hydrogen-containing silicone oil, allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, 1-(4-vinyl-phenyl)-ethyl ketone, and isopropanol.

[0033] The alkaline treatment solution was obtained by mixing 10% sodium hydroxide solution with ethanol at a volume ratio of 4.5:15.

[0034] Example 3 A method for preparing a low-pore-count composite lining fabric includes the following preparation steps: (1) The polyester yarn is woven into a grey fabric with a width of 189cm and a weaving density of 75. 57 threads / inch; (2) The fabric is pre-shrunk to a width of 120cm and a weft density of 25 threads / cm. The pre-shrunk is carried out in a tenter frame with an upper overfeed of +9 to +11%, a lower overfeed of +6 to +8%, an output overfeed of +0.6 to +1.0%, a weft straightener tension of 95 to 97N, and a rolling mill tension of 25 to 30N. The tenter frame includes seven drying chambers, namely the first drying chamber, the second drying chamber, the third drying chamber, the fourth drying chamber, the fifth drying chamber, the sixth drying chamber, and the seventh drying chamber. The temperatures of the first drying chamber, the second drying chamber, the third drying chamber, the fourth drying chamber, the fifth drying chamber, the sixth drying chamber, and the seventh drying chamber are 140℃, 150℃, 170℃, 170℃, 170℃, 170℃, and 170℃, respectively, to obtain the pre-shrunk fabric. (3) Dyeing the pre-shrunken fabric: The pre-shrunken fabric is placed into the warp dyeing machine at room temperature, the machine cover is sealed, and the temperature is raised to 80°C at 2°C / min. 1.5 g / L of penetrant, 1.5 g / L of caustic soda, 0.8 g / L of emulsifier, 2 g / L of whitening agent, and 4 g / L of hydrogen peroxide are added. Then the temperature is raised to 110°C at 1°C / min and kept at that temperature for 4 min. Then the temperature is raised to 120°C at 1°C / min and kept at that temperature for 20 min. Drain the dye liquor; add water, 4.7% OWF dye, and 2 g / L alkali-resistant leveling agent, then raise the temperature to 140℃ at 2℃ / min, keep it at that temperature for 60 min, lower the temperature to 85℃ at 2.5℃ / min, drain the dye liquor, and the dyeing liquor ratio is 1:30; add water, 0.8 g / L alkaline reducing cleaning agent DR-84CN, and 1 g / L glacial acetic acid, raise the temperature to 80℃ at 3℃ / min, wash for 25 min, drain the dye liquor, and obtain the dyed fabric; (4) The dyed fabric is shaped and finished to obtain the composite lining fabric; specifically: the dyed fabric is dipped and rolled in a setting agent with a roll-off rate of 80% and a bath ratio of 1:20, then immersed in an alkaline treatment solution for 12 hours, followed by rolling with a roll-off rate of 80%, and then dried at 105℃ for 10 hours. The fabric is then fed into a tenter frame for setting. The upper overfeed of the tenter frame is +9~+10.5%, the lower overfeed is +5~+7%, the fabric output overfeed is +0.7~+1.2%, the weft tension is 95~97N, and the rolling mill tension is 25~30N. The tenter frame includes seven drying chambers, specifically the first drying chamber, the second drying chamber, the third drying chamber, the fourth drying chamber, the fifth drying chamber, the sixth drying chamber, and the seventh drying chamber. The temperatures of the first drying chamber, the second drying chamber, the third drying chamber, the fourth drying chamber, the fifth drying chamber, the sixth drying chamber, and the seventh drying chamber are 140℃, 150℃, 170℃, 170℃, 170℃, 170℃, and 170℃, respectively.

[0035] The specific preparation method of the dye is as follows: Under nitrogen protection, 2 parts by mass of 4-(N,N-dimethylamino)-1,8-naphthalenedicarboxylic anhydride and 50 parts by mass of ethanol are mixed, and 1.2 parts by mass of 80 wt% hydrazine hydrate solution is added dropwise. The mixture is stirred at room temperature for 3 hours, filtered, washed with ethanol, dried, and recrystallized with chlorobenzene to obtain N-amino-4-N,N-dimethyl-1,8-naphthaleneimide; 2 parts by mass of N-amino-4-N,N-dimethyl-1,8-naphthaleneimide, 1,1'-ferrocenedicarboxaldehyde, and 60 parts by mass of ethanol are mixed, and 0.6 parts by mass of glacial acetic acid is added dropwise. The mixture is heated under reflux for 7 hours. After the reflux, column chromatography is performed using a mixture of dichloromethane and acetone with a volume ratio of 15:1 to obtain the dye; wherein, the molar ratio of N-amino-4-N,N-dimethyl-1,8-naphthaleneimide to 1,1'-ferrocenedicarboxaldehyde is 1:2.4.

[0036] The finishing agent used for shaping includes the following components: 15 g / L hydrophilic softener, 10 g / L antistatic agent, 2 g / L glacial acetic acid, and water as the solvent; the hydrophilic softener is obtained by mixing polyether phenyl silicone oil with a composite emulsifier and deionized water, and has a solid content of 32%, wherein the amount of composite emulsifier added is 0.2 times the mass of polyether phenyl silicone oil.

[0037] The specific preparation steps of the polyether phenyl silicone oil are as follows: Under nitrogen protection, side-chain hydrogen-containing silicone oil, allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, 1-(4-vinyl-phenyl)-ethyl ketone, and isopropanol are added and stirred until uniform. The mixture is heated to 85°C in a constant temperature oil bath, and 15 ppm of chloroplatinic acid catalyst is added. The reaction is continued at a constant temperature for 3 hours. After the reaction is completed, the low-boiling part is removed by vacuum to obtain polyether phenyl silicone oil. The molar ratio of silicon-hydrogen bonds to carbon-carbon double bonds is 1.1:1, the molar ratio of allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, and 1-(4-vinyl-phenyl)-ethyl ketone is 4:1:5, and the amount of isopropanol added is 20% of the total mass of side-chain hydrogen-containing silicone oil, allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, 1-(4-vinyl-phenyl)-ethyl ketone, and isopropanol.

[0038] The alkaline treatment solution is obtained by mixing 10% sodium hydroxide solution with ethanol at a volume ratio of 5:15.

[0039] Comparative Example 1 The difference between Comparative Example 1 and Example 2 is that the dye used is CI Disperse Yellow 11, while the other components and steps are the same as in Example 2.

[0040] Comparative Example 2 The difference between Comparative Example 2 and Example 2 is that the hydrophilic softener used is DP-9993 produced by Zhangjiagang Debao Chemical Co., Ltd., while the other components and steps are the same as in Example 2.

[0041] Comparative Example 3 The difference between Comparative Example 3 and Example 2 is that the finishing step is to dip and roll in the setting agent, then dry and set. The remaining components and steps are the same as in Example 2.

[0042] Example of effect Sunlight resistance test: Test condition 1 from GB / T31899-2015 "Textiles - Weather Resistance Tests - Ultraviolet Exposure" was selected; Laboratory accelerated aging test used a QUV accelerated aging tester, employing fluorescent ultraviolet lamps to simulate the damage caused by sunlight to the composite lining fabric. The lamp selected was UVA-340, with an irradiance of 0.89 W / m². 2The sample was exposed to ultraviolet light at a blackboard temperature of 40℃ for 8 hours, followed by condensation at a blackboard temperature of 20℃ for 4 hours. The sample size was 75mm×150m. The QUV accelerated aging test lasted for 300 hours, and the sample was evaluated every 50 hours for the retention rate of breaking strength after exposure.

[0043] Softness test: Five professionals with certain experimental experience touched the composite lining fabrics of Examples 1-3 and Comparative Examples 1-3 and rated them based on actual feel, softness, smoothness and fluffiness; the average of the rating data of the five staff members was taken; 10 was the best and 1 was the worst.

[0044] Color fastness to washing: Tested according to GB / T3921.1-2008 standard.

[0045] Color fastness to rubbing: Tested according to GB / T3920-2008 standard.

[0046] Table 1 below shows the performance test results of the composite lining fabrics of Examples 1-3 and Comparative Examples 1-3: Table 1

[0047] Table 1 above shows that the composite lining fabrics of Examples 1-3 have good softness, good resistance to ultraviolet radiation and washing, and good abrasion resistance.

[0048] The dye used in Comparative Example 1 is CI Disperse Yellow 11. The composite lining fabric has weak UV exposure resistance, weak wash resistance, and weak abrasion resistance.

[0049] The hydrophilic softener used in Comparative Example 2 was DP-9993 produced by Zhangjiagang Debao Chemical Co., Ltd. The hydrophilic softeners in Examples 1-3 are comparable to the composite lining fabric treated with this softener. The composite lining fabric obtained in Comparative Example 2 has weaker water wash resistance and abrasion resistance, but stronger UV exposure resistance than that in Comparative Example 1, indicating that the introduction of the ferrocene structure can enhance the UV exposure resistance of the composite lining fabric.

[0050] Comparative Example 3 involved a finishing process of immersion and rolling in a setting agent, followed by drying and setting, without alkali treatment. The resulting composite lining fabric exhibited weak UV resistance, weak washability, and weak abrasion resistance.

[0051] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for preparing a low-pore-count composite lining fabric, characterized in that, The preparation steps include the following: (1) Weave polyester yarn into greige fabric; (2) The fabric is pre-shrunk and shaped; (3) Dye the pre-shrinked fabric; (4) The dyed fabric is shaped and finished to obtain the composite lining.

2. The method for preparing low-pore-count composite lining fabric according to claim 1, characterized in that, The pre-shrinking and shaping are carried out in a tenter frame. The upper overfeed of the tenter frame is +9~+11%, the lower overfeed is +6~+8%, the fabric output overfeed is +0.6~+1.0%, the weft straightener tension is 95~97N, and the rolling mill tension is 25~30N. The tenter frame includes 7 drying chambers, specifically the first drying chamber, the second drying chamber, the third drying chamber, the fourth drying chamber, the fifth drying chamber, the sixth drying chamber, and the seventh drying chamber. The temperatures of the first drying chamber, the second drying chamber, the third drying chamber, the fourth drying chamber, the fifth drying chamber, the sixth drying chamber, and the seventh drying chamber are 140℃, 150℃, 170℃, 170℃, 170℃, 170℃, and 170℃, respectively.

3. The method for preparing low-pore-count composite lining fabric according to claim 1, characterized in that, The dyeing steps in step (3) include room temperature dyeing, high temperature and high pressure dyeing, water washing, reduction cleaning, and water washing out of the fabric.

4. The method for preparing low-pore-count composite lining fabric according to claim 1, characterized in that, The high-temperature and high-pressure dyeing temperature is 130~140℃, the holding time is 40~60min, and the heating rate to the dyeing temperature is 1~2℃ / min.

5. The method for preparing low-pore-count composite lining fabric according to claim 1, characterized in that, The dyeing solution used in step (3) includes 4.5-4.7% OWF dye, 1-2 g / L alkali-resistant leveling agent, and water as a solvent.

6. The method for preparing the low-pore-count composite lining fabric according to claim 5, characterized in that, The dye is prepared by reacting N-amino-4-N,N-dimethyl-1,8-naphthalimide with 1,1'-ferrocene dicarboxaldehyde. The specific preparation method is as follows: Under nitrogen protection, 2 parts by mass of 4-(N,N-dimethylamino)-1,8-naphthalenedicarboxylic anhydride are mixed with 40-50 parts by mass of ethanol, and 1-1.2 parts by mass of 80wt% hydrazine hydrate solution are added dropwise. The mixture is stirred at room temperature for 1-3 hours, filtered, washed with ethanol, dried, and recrystallized from chlorobenzene to obtain N-amino-4-N,N-dimethyl-1,8-naphthalimide. ,8-Naphthylimide; 2 parts by mass of N-amino-4-N,N-dimethyl-1,8-naphthylimide, 1,1'-ferrocene dicarboxaldehyde, and 50-60 parts by mass of ethanol were added dropwise with 0.5-0.6 parts by mass of glacial acetic acid. The mixture was heated under reflux for 5-7 hours. After the reflux, column chromatography was performed using a mixture of dichloromethane and acetone at a volume ratio of 15:1 to obtain the dye. The molar ratio of N-amino-4-N,N-dimethyl-1,8-naphthylimide to 1,1'-ferrocene dicarboxaldehyde was 1:2-2.

4.

7. The method for preparing low-pore-count composite lining fabric according to claim 1, characterized in that, The shaping and finishing steps involve immersion and rolling in a shaping agent, followed by drying, alkali treatment, and shaping.

8. The method for preparing the low-pore-count composite lining fabric according to claim 7, characterized in that, The finishing agent used for shaping and finishing includes the following components in the following proportions: 10-15 g / L of hydrophilic softener, 8-10 g / L of antistatic agent, 1-2 g / L of glacial acetic acid, and water as the solvent; the hydrophilic softener is obtained by mixing polyether phenyl silicone oil with a composite emulsifier and deionized water, and has a solid content of 28-32%, wherein the amount of composite emulsifier added is 0.1-0.2 times the mass of polyether phenyl silicone oil.

9. The method for preparing the low-pore-count composite lining fabric according to claim 8, characterized in that, The polyether phenyl silicone oil is obtained by reacting side-chain hydrogen-containing silicone oil, allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, and 1-(4-vinyl-phenyl)-ethyl ketone. The specific preparation steps are as follows: Under nitrogen protection, side-chain hydrogen-containing silicone oil, allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, 1-(4-vinyl-phenyl)-ethyl ketone, and isopropanol are added and stirred until homogeneous. The mixture is then heated to 80-85°C in a constant-temperature oil bath, and 5-15 ppm of chloroplatinic acid catalyst is added. The reaction is continued at a constant temperature. After 2-3 hours of reaction, the low-boiling point is removed under reduced pressure to obtain polyether phenyl silicone oil, wherein the molar ratio of silane-hydrogen bonds to carbon-carbon double bonds is 1-1.1:1, the molar ratio of allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, and 1-(4-vinyl-phenyl)-ethyl ketone is 4:1:4-5, and the amount of isopropanol added is 15-20% of the total mass of the side-chain hydrogen-containing silicone oil, allyl alcohol polyoxyalkyl ether, vinyltriethoxysilane, 1-(4-vinyl-phenyl)-ethyl ketone, and isopropanol.

10. The method for preparing the low-pore-count composite lining fabric according to claim 7, characterized in that, The alkali-treated solution is prepared by mixing 10% sodium hydroxide solution with ethanol at a volume ratio of 4-5:

15. The alkali treatment temperature is room temperature, and the alkali treatment time is 4-12 hours.

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