Preparation method of a highly elastic and wrinkle-resistant blended fabric

Abstract

The present invention relates to the technical field of fabrics, and discloses a preparation method of a highly elastic and wrinkle-resistant blended fabric. Sodium carbonate, an organosilicon quaternary ammonium salt triazine finishing agent, and a cotton / spandex blended fabric are added to water. After soaking, two-bath two-roll padding is carried out. After washing, pre-drying and baking are carried out to obtain the highly elastic and wrinkle-resistant blended fabric. The finishing agent of the present invention contains cyanuric chloride groups, and its active chlorine atoms can react with the hydroxyl groups of the cotton fabric, so that the finishing agent is connected to the surface of the blended fabric through stable chemical bonds. At the same time, the finishing agent contains a large number of amide bonds, which form hydrogen bond interactions with the urethane groups of the spandex fabric, so that the finishing agent is firmly attached to the surface of the blended fabric, having good wash resistance. After multiple washes, the finishing agent is not easy to fall off, and the fabric still has a high wrinkle recovery angle, moisture regain rate and good hand feeling, maintaining good anti-wrinkle, hydrophilic properties and soft elastic hand feeling.

Description

Technical Field

[0001] The present invention relates to the technical field of fabrics, and specifically to a preparation method of a highly elastic and wrinkle-resistant blended fabric. Background Art

[0002] Cotton fabrics have good hydrophilic moisture absorption, warmth retention, heat resistance and other properties, and are widely used in clothing, home textiles, medical and health products and other aspects. Spandex is a polyurethane fiber with high elasticity, good mechanical properties and excellent abrasion resistance. Blending cotton fabrics with spandex can obtain blended fabric materials with better properties. In order to improve the anti-wrinkle, soft and elastic hand feeling and other properties of cotton / spandex blended fabrics, it is usually necessary to finish the fabrics. Common finishing agents include polyamide finishing agents, polyether finishing agents, silicone finishing agents, etc.

[0003] Silicone finishing agents are mainly prepared from hydrogen-containing silicone oil, amino silicone oil, polysiloxane and other raw materials, and are a kind of high-performance finishing agents that can improve the anti-wrinkle property, softness, comfort and hand feeling of fabrics. However, silicone finishing agents have strong hydrophobicity, which will affect the hydrophilic moisture absorption property of fabrics. And after the finishing agent finishes the fabric, after friction or multiple washings or friction, the finishing agent will gradually fall off, resulting in a deterioration of the finishing effect. Summary of the Invention

[0004] (1) Technical problems to be solved: The present invention provides a preparation method of a blended fabric with high elasticity, anti-wrinkle property and hydrophilicity.

[0005] (2) Technical solution: A preparation method of a highly elastic and wrinkle-resistant blended fabric:

[0006] Step A: Add dichloromethane, ammonia propyl terminated polydimethylsiloxane, and a dialdehyde quaternary ammonium salt monomer with the structural formula into a reaction vessel, where a in the structural formula is 2-6, stir at 40-45 °C for a condensation reaction for 24-36 h, perform rotary evaporation, wash with petroleum ether, then add it to ethanol, add sodium borohydride, stir at 20-30 °C for a reduction reaction for 3-6 h, perform rotary evaporation, add dichloromethane and water, stir and then let it stand for layering, remove the aqueous phase, perform rotary evaporation on the organic phase, and dry to obtain an organosilicon quaternary ammonium salt.

[0007] Step B: Add the organosilicon quaternary ammonium salt, cyanuric chloride, sodium carbonate and water into 1,4-dioxane, stir and react at 15-25 °C for 6-12 h, perform rotary evaporation, add dichloromethane and water, stir and then let it stand for layering, remove the aqueous phase, perform rotary evaporation on the organic phase, and dry to obtain an organosilicon quaternary ammonium salt triazine finishing agent.

[0008] The reaction formula is:

[0009]

[0010] Step C: Add water, 0.3 - 0.8% of sodium carbonate based on the mass of water, and 2 - 5% of an organosilicon quaternary ammonium salt triazine finishing agent into a container. After stirring, add a cotton / spandex blended fabric, heat to 70 - 80 °C, soak for 1 - 2 h, then perform two - dip two - roll, with a liquor pickup rate of 80 - 90%. After washing, perform pre - drying and baking to obtain a high - elastic and wrinkle - resistant blended fabric.

[0011] Preferably, in step A, the mass of the dialdehyde quaternary ammonium salt monomer is 64 - 71% of the mass of the aminopropyl - terminated polydimethylsiloxane.

[0012] Preferably, the preparation method of the dialdehyde quaternary ammonium salt monomer is as follows:

[0013] Step (1): Add dichloromethane, p - formylbenzoic acid, triethylamine (TEA), 1 - (3 - dimethylaminopropyl) - 3 - ethylcarbodiimide hydrochloride (EDCl), 1 - hydroxybenzotriazole (HOBt), and 3 - (dimethylamino) - 1 - propylamine into a reaction vessel. Stir and react at 20 - 30 °C for 12 - 18 h. Add saturated sodium chloride aqueous solution, stir, let it stand for layer separation, remove the aqueous phase, rotary evaporate the organic phase, and separate by silica gel column chromatography to obtain an intermediate.

[0014] Step (2): Add isopropanol, the intermediate, and a dibromoalkane compound into a reaction vessel, heat to 80 - 85 °C, and perform condensation reflux reaction for 36 - 48 h. Rotary evaporate, and recrystallize the product in a mixed solution of isopropanol and acetone to obtain the dialdehyde quaternary ammonium salt monomer. The reaction formula is as follows:

[0015]

[0016] Preferably, in step (1), the molar amounts of triethylamine, 1 - (3 - dimethylaminopropyl) - 3 - ethylcarbodiimide hydrochloride, 1 - hydroxybenzotriazole, and 3 - (dimethylamino) - 1 - propylamine are respectively 120 - 130%, 140 - 150%, 140 - 150%, and 120 - 130% of the molar amount of p - formylbenzoic acid.

[0017] Preferably, in step (2), the molar amount of the intermediate is 200 - 240% of the molar amount of the dibromoalkane compound. The dibromoalkane compound is 1,2 - dibromoethane, 1,3 - dibromopropane, 1,4 - dibromobutane, 1,5 - dibromopentane, or 1,6 - dibromohexane.

[0018] Preferably, in step B, the masses of cyanuric chloride and sodium carbonate are respectively 6 - 15% and 4 - 10% of the mass of the quaternary ammonium salt silicone oil.

[0019] (3) Technical effects: In the present invention, aminopropyl-terminated polydimethylsiloxane and dialdehyde quaternary ammonium salt monomer are subjected to a condensation reaction and then reduced with sodium borohydride. The generated imino group reacts with one chlorine atom of cyanuric chloride to obtain an organosilicon quaternary ammonium salt triazine finishing agent. Then, a cotton / spandex blended fabric is finished. The finishing agent contains a flexible polysiloxane segment, significantly improving the wrinkle resistance of the blended fabric, showing a higher wrinkle recovery angle, and improving the flexibility, elasticity and other handfeel properties of the blended fabric.

[0020] The organosilicon quaternary ammonium salt triazine finishing agent of the present invention contains a large number of hydrophilic quaternary ammonium salts, amide bonds, imino groups and other groups, enabling the blended fabric to maintain good moisture regain and hydrophilicity, and avoiding the influence of hydrophobic organosilicon finishing agents on the hydrophilic properties of the fabric.

[0021] The finishing agent of the present invention contains cyanuric chloride groups, and its active chlorine atoms can react with the hydroxyl groups of cotton fabrics, thereby connecting the finishing agent to the surface of the blended fabric through stable chemical bonds. At the same time, the finishing agent contains a large number of amide bonds, forming hydrogen bond interactions with the urethane groups of spandex fabrics, enabling the finishing agent to firmly adhere to the surface of the blended fabric, having good wash resistance. After multiple washes, the finishing agent is not easily detached, and the fabric still has a high wrinkle recovery angle, moisture regain and good handfeel, maintaining good wrinkle resistance, hydrophilicity and flexible elastic handfeel. Specific embodiments

[0022] Aminopropyl-terminated polydimethylsiloxane, molecular weight 1000, Guangdong Fangxin Biotechnology Co., Ltd.

[0023] Cotton / spandex blended fabric, cotton content 95%, spandex content 5%.

[0024] Example 1: (1) Add 20 mL of dichloromethane, 5 mmol of p-formylbenzoic acid, 6 mmol of triethylamine, 7.5 mmol of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, 7.5 mmol of 1-hydroxybenzotriazole, and 6 mmol of 3-(dimethylamino)-1-propylamine to a reaction vessel, stir and react at 30 °C for 12 h, add saturated sodium chloride aqueous solution, stir, let stand for liquid separation, remove the aqueous phase, rotary evaporate the organic phase, and separate by silica gel column chromatography to obtain an intermediate.

[0025] (2) Add 60 mL of isopropanol, 10 mmol of the intermediate, and 20 mmol of 1,2-dibromoethane to a reaction vessel, heat to 80 °C, and carry out a condensation reflux reaction for 48 h. Rotary evaporate, and recrystallize the product in a mixed solution of isopropanol and acetone to obtain the dialdehyde quaternary ammonium salt monomer.

[0026] Example 2: (1) Add 25 mL of dichloromethane, 5 mmol of 4-formylbenzoic acid, 6.5 mmol of triethylamine, 7 mmol of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, 7 mmol of 1-hydroxybenzotriazole, and 6.5 mmol of 3-(dimethylamino)-1-propylamine into a reaction vessel. Stir and react at 20 °C for 18 h. Add saturated sodium chloride aqueous solution, stir, let it stand for layer separation, remove the aqueous phase, rotary evaporate the organic phase, and separate by silica gel column chromatography to obtain an intermediate.

[0027] (2) Add 70 mL of isopropanol, 10 mmol of the intermediate, and 24 mmol of 1,6-dibromohexane into a reaction vessel. Heat to 85 °C and reflux for 36 h. Rotary evaporate, and recrystallize the product in a mixed solution of isopropanol and acetone to obtain the bisaldehyde quaternary ammonium salt monomer.

[0028] Example 3: (1) Add 300 mL of dichloromethane, 30 g of aminopropyl-terminated polydimethylsiloxane, and 19.2 g of the bisaldehyde quaternary ammonium salt monomer (prepared in Example 1) into a reaction vessel. Stir and carry out the condensation reaction at 40 °C for 36 h. Rotary evaporate, wash with petroleum ether, then add it to 800 mL of ethanol, add 3 g of sodium borohydride, stir and carry out the reduction reaction at 20 °C for 6 h. Rotary evaporate, add dichloromethane and water, stir and let it stand for layer separation, remove the aqueous phase, rotary evaporate the organic phase, and dry to obtain the organosilicone quaternary ammonium salt.

[0029] (2) Add 40 g of the organosilicone quaternary ammonium salt, 2.4 g of cyanuric chloride, 1.6 g of sodium carbonate, and 5 mL of water into 400 mL of 1,4-dioxane. Stir and react at 25 °C for 12 h. Rotary evaporate, add dichloromethane and water, stir and let it stand for layer separation, remove the aqueous phase, rotary evaporate the organic phase, and dry to obtain the organosilicone quaternary ammonium salt triazine finishing agent.

[0030] (3) Add 1 L of water, 3 g of sodium carbonate, and 20 g of the organosilicone quaternary ammonium salt triazine finishing agent into a container. Stir and then add the cotton / spandex blended fabric. Heat to 80 °C and soak for 1 h, then carry out two-bath two-roll padding with a liquor pickup of 85%. Wash and pre-dry at 85 °C for 10 min and cure at 160 °C for 3 min to obtain the high-elastic and wrinkle-resistant blended fabric.

[0031] Example 4: (1) Add 350 mL of dichloromethane, 30 g of aminopropyl-terminated polydimethylsiloxane, and 19.2 g of the bisaldehyde quaternary ammonium salt monomer (prepared in Example 2) into a reaction vessel. Stir and carry out the condensation reaction at 45 °C for 24 h. Rotary evaporate, wash with petroleum ether, then add it to 800 mL of ethanol, add 3.2 g of sodium borohydride, stir and carry out the reduction reaction at 30 °C for 4 h. Rotary evaporate, add dichloromethane and water, stir and let it stand for layer separation, remove the aqueous phase, rotary evaporate the organic phase, and dry to obtain the organosilicone quaternary ammonium salt.

[0032] (2) Add 40 g of organosilicon quaternary ammonium salt, 6 g of cyanuric chloride, 4 g of sodium carbonate, and 8 mL of water to 600 mL of 1,4-dioxane. Stir and react at 15 °C for 6 h. Rotate and evaporate. Add dichloromethane and water. After stirring, let it stand for liquid separation. Remove the aqueous phase. Rotate and evaporate the organic phase and dry it to obtain the organosilicon quaternary ammonium salt triazine finishing agent.

[0033] (3) Add 1 L of water, 5 g of sodium carbonate, and 35 g of organosilicon quaternary ammonium salt triazine finishing agent to a container. After stirring, add the cotton / spandex blended fabric. Heat to 70 °C and soak for 2 h. Then perform two-bath two-roll padding with a liquor pickup of 80%. After washing, pre-dry at 80 °C for 10 min and cure at 160 °C for 3 min to obtain the high-elastic and wrinkle-resistant blended fabric.

[0034] Example 5: (1) Add 400 mL of dichloromethane, 30 g of aminopropyl-terminated polydimethylsiloxane, and 21.3 g of bisaldehyde quaternary ammonium salt monomer (prepared in Example 1) to a reaction vessel. Stir and carry out the condensation reaction at 40 °C for 36 h. Rotate and evaporate. Wash with petroleum ether. Then add it to 800 mL of ethanol. Add 2.8 g of sodium borohydride and stir and carry out the reduction reaction at 30 °C for 3 h. Rotate and evaporate. Add dichloromethane and water. After stirring, let it stand for liquid separation. Remove the aqueous phase. Rotate and evaporate the organic phase and dry it to obtain the organosilicon quaternary ammonium salt.

[0035] (2) Add 40 g of organosilicon quaternary ammonium salt, 4.8 g of cyanuric chloride, 3 g of sodium carbonate, and 8 mL of water to 600 mL of 1,4-dioxane. Stir and react at 20 °C for 12 h. Rotate and evaporate. Add dichloromethane and water. After stirring, let it stand for liquid separation. Remove the aqueous phase. Rotate and evaporate the organic phase and dry it to obtain the organosilicon quaternary ammonium salt triazine finishing agent.

[0036] (3) Add 1 L of water, 8 g of sodium carbonate, and 50 g of organosilicon quaternary ammonium salt triazine finishing agent to a container. After stirring, add the cotton / spandex blended fabric. Heat to 70 °C and soak for 2 h. Then perform two-bath two-roll padding with a liquor pickup of 90%. After washing, pre-dry at 85 °C for 10 min and cure at 160 °C for 3 min to obtain the high-elastic and wrinkle-resistant blended fabric.

[0037] Comparative Example 1 is the untreated cotton / spandex blended fabric.

[0038] Comparative Example 2: (1) Add 1 L of water, 3 g of sodium carbonate, and 20 g of aminopropyl-terminated polydimethylsiloxane to a container. After stirring, add the cotton / spandex blended fabric. Heat to 80 °C and soak for 1 h. Then perform two-bath two-roll padding with a liquor pickup of 85%. After washing, pre-dry at 85 °C for 10 min and cure at 160 °C for 3 min to obtain the high-elastic and wrinkle-resistant blended fabric.

[0039] Comparative Example 3: (1) Add 1 L of water, 3 g of sodium carbonate, and 20 g of organosilicon quaternary ammonium salt (prepared in Example 3) into a container. After stirring, add a cotton / spandex blended fabric, heat to 80 °C, soak for 1 h, then perform two-bath padding with a liquor pickup of 85%. After washing, pre-dry at 85 °C for 10 min and cure at 160 °C for 3 min to obtain a high-elastic and wrinkle-resistant blended fabric.

[0040] Comparative Example 4: (1) Add 300 mL of dichloromethane, 30 g of aminopropyl-terminated polydimethylsiloxane, and 19.2 g of terephthalaldehyde into a reaction vessel, stir at 40 °C for a condensation reaction for 36 h, perform rotary evaporation, wash with petroleum ether, then add to 800 mL of ethanol, add 3 g of sodium borohydride, stir at 20 °C for a reduction reaction for 6 h, perform rotary evaporation, add dichloromethane and water, stir and then let it stand for phase separation, remove the aqueous phase, rotary evaporate the organic phase, and dry to obtain an organosilicon copolymer.

[0041] (2) Add 40 g of the organosilicon copolymer, 2.4 g of cyanuric chloride, 1.6 g of sodium carbonate, and 5 mL of water into 400 mL of 1,4-dioxane, stir and react at 75 °C for 12 h, perform rotary evaporation, add dichloromethane and water, stir and then let it stand for phase separation, remove the aqueous phase, rotary evaporate the organic phase, and dry to obtain an organosilicon triazine finishing agent.

[0042] (3) Add 1 L of water, 3 g of sodium carbonate, and 20 g of the organosilicon triazine finishing agent into a container. After stirring, add a cotton / spandex blended fabric, heat to 80 °C, soak for 1 h, then perform two-bath padding with a liquor pickup of 85%. After washing, pre-dry at 85 °C for 10 min and cure at 160 °C for 3 min to obtain a high-elastic and wrinkle-resistant blended fabric.

[0043] The crease recovery angle is tested according to the standard of GB / T 3819-1997.

[0044] The moisture regain is tested according to the standard of GB / T 9995-1997. The test temperature is 20 °C and the relative humidity is 65%.

[0045] Take 10 staff members engaged in the textile field as a test group, and use the subjective judgment method to score the softness, elasticity, and hand feeling of the blended fabric by the methods of grasping, pinching, feeling, and grasping. 1 point represents the worst softness, elasticity, and hand feeling, and 10 points represents the best, and take the average value.

[0046] Wash and dry the blended fabric according to the standard of GB / T 8629-2001, repeat 50 times, and then test the crease recovery angle, moisture regain, and hand feeling evaluation.

[0047] Table 1

[0048]

[0049] Table 2

[0050]

[0051] Table 3

[0052]

[0053]

[0054] After testing, Comparative Example 1 is an unprocessed cotton / spandex blended fabric, which has good hydrophilicity and moisture regain, but has a very low wrinkle recovery angle, poor wrinkle resistance, and very poor handle such as softness. After the washing and drying process, the wrinkle recovery angle, moisture regain and handle hardly change.

[0055] Examples 3-5 use an organosilicon quaternary ammonium salt triazine finishing agent to finish the cotton / spandex blended fabric. The finishing agent contains a flexible polysiloxane chain segment, which significantly improves the wrinkle resistance of the blended fabric, shows a higher wrinkle recovery angle, and improves the flexibility, elasticity and other handle of the blended fabric. At the same time, the finishing agent contains a large number of hydrophilic quaternary ammonium salts, amide bonds, imino groups and other groups, so that the blended fabric maintains good moisture regain and hydrophilicity, and avoids the influence of hydrophobic organosilicon finishing agents on the hydrophilic properties of the fabric. At the same time, after multiple washing and drying processes, the fabric still has a high wrinkle recovery angle, moisture regain and good handle, because the finishing agent contains cyanuric chloride groups Its active chlorine atoms can react with the hydroxyl groups of the cotton fabric, so that the finishing agent is connected to the surface of the blended fabric through stable chemical bonds. At the same time, the finishing agent contains a large number of amide bonds And the urethane groups of the spandex fabric Form hydrogen bond interactions, so that the finishing agent firmly adheres to the surface of the blended fabric, and the finishing agent is not easy to fall off after multiple washings. Thus maintaining good wrinkle resistance, hydrophilic properties and flexible elastic handle.

[0056] Comparative Example 2 uses aminopropyl-terminated polydimethylsiloxane as an organosilicon finishing agent to finish the blended fabric. The wrinkle recovery angle of the fabric becomes larger, and the flexible elastic handle becomes better, but the moisture regain is significantly reduced, the hydrophilicity becomes worse, and after multiple washings, the finishing agent is easy to fall off from the fabric surface, resulting in a smaller wrinkle recovery angle and a worse flexible elastic handle.

[0057] Comparative Example 3 uses an organosilicon quaternary ammonium salt as a finishing agent to finish the blended fabric. After finishing, the wrinkle recovery angle of the fabric becomes larger, the flexible elastic handle becomes better, the moisture regain and hydrophilicity are good, but it does not contain cyanuric chloride groups and cannot undergo chemical bonding with the hydroxyl groups of the cotton fabric. After multiple washings, the finishing agent is easy to fall off from the fabric surface, and the wrinkle recovery angle and moisture regain become smaller, and the flexible elastic handle becomes worse.

[0058] Comparative Example 4 uses terephthalaldehyde as a raw material, and the obtained silicone polymer and silicone finishing agent do not contain hydrophilic quaternary ammonium salt groups and amide bonds, and the moisture regain and hydrophilicity of the blended fabric after finishing are poor.

Claims

1. A preparation method of a highly elastic and wrinkle-resistant blended fabric, characterized in that, The preparation method is as follows: Step A: Add dichloromethane, ammonia-propyl terminated polydimethylsiloxane, and a bis-aldehyde quaternary ammonium salt monomer with the structural formula to the reaction vessel. In the structural formula, a is 2 - 6. Stir to carry out the condensation reaction, rotary evaporate, wash with petroleum ether, then add it to ethanol, add sodium borohydride, stir to carry out the reduction reaction, rotary evaporate, add dichloromethane and water, stir and then let it stand for liquid separation, remove the aqueous phase, rotary evaporate the organic phase, and dry to obtain the organosilicon quaternary ammonium salt; Step B: Add organosilicon quaternary ammonium salt, cyanuric chloride, sodium carbonate, and water to 1,4-dioxane, stir and react, perform rotary evaporation, add dichloromethane and water, stir and then let it stand for phase separation, remove the aqueous phase, perform rotary evaporation on the organic phase, and dry to obtain the organosilicon quaternary ammonium salt triazine finishing agent; Step C: Add water, sodium carbonate, and the organosilicon quaternary ammonium salt triazine finishing agent to a container, stir and then add the cotton / spandex blended fabric, heat to 70 - 80 °C, soak for 1 - 2 h, then perform two-bath two-roll padding with a liquor pickup of 80 - 90%, wash, and then perform pre-drying and curing to obtain the high-elastic and wrinkle-resistant blended fabric.

2. The preparation method of the highly elastic and wrinkle-resistant blended fabric according to claim 1, characterized in that, In Step A, the temperature of the condensation reaction is 40 - 45 °C, and the reaction time is 24 - 36 h; the temperature of the reduction reaction is 20 - 30 °C, and the reaction time is 3 - 6 h.

3. The preparation method of the high-elastic anti-wrinkle blended fabric according to claim 1, characterized in that, In Step A, the mass of the dialdehyde quaternary ammonium salt monomer is 64 - 71% of the mass of the aminopropyl-terminated polydimethylsiloxane.

4. The preparation method of the high-elastic and wrinkle-resistant blended fabric according to claim 3, characterized in that, The preparation method of the dialdehyde quaternary ammonium salt monomer is as follows: Step (1): Add dichloromethane, p-formylbenzoic acid, triethylamine, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, 1-hydroxybenzotriazole, and 3-(dimethylamino)-1-propylamine to a reaction vessel, stir and react at 20 - 30 °C for 12 - 18 h, add saturated sodium chloride aqueous solution, stir, let it stand for phase separation, remove the aqueous phase, perform rotary evaporation on the organic phase, and separate by silica gel column chromatography to obtain the intermediate; Step (2): Add isopropanol, the intermediate, and the dibromoalkane compound to a reaction vessel, heat to 80 - 85 °C, perform reflux condensation reaction for 36 - 48 h, perform rotary evaporation, and perform liquid-phase recrystallization on the product to obtain the dialdehyde quaternary ammonium salt monomer.

5. The preparation method of the high-elastic and wrinkle-resistant blended fabric according to claim 4, characterized in that In Step (1), the molar amounts of triethylamine, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, 1-hydroxybenzotriazole, and 3-(dimethylamino)-1-propylamine are respectively 120 - 130%, 140 - 150%, 140 - 150%, and 120 - 130% of the molar amount of p-formylbenzoic acid.

6. The preparation method of the high-elastic anti-wrinkle blended fabric according to claim 4, wherein, In Step (2), the molar amount of the intermediate is 200 - 240% of the molar amount of the dibromoalkane compound; the dibromoalkane compound is 1,2-dibromoethane, 1,3-dibromopropane, 1,4-dibromobutane, 1,5-dibromopentane, or 1,6-dibromohexane.

7. The preparation method of the high-elastic anti-wrinkle blended fabric according to claim 1, characterized in that, In Step B, the masses of cyanuric chloride and sodium carbonate are respectively 6 - 15% and 4 - 10% of the mass of the organosilicon quaternary ammonium salt.

8. The preparation method of the high-elastic anti-wrinkle blended fabric according to claim 1, characterized in that, In Step B, the reaction temperature is 15 - 25 °C, and the reaction time is 6 - 12 h.

9. The preparation method of the highly elastic and wrinkle-resistant blended fabric according to claim 1, characterized in that, In Step C, the masses of sodium carbonate and the organosilicon quaternary ammonium salt triazine finishing agent are respectively 0.3 - 0.8% and 2 - 5% of the mass of water.

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