A fabric hydrophilic finishing agent, its preparation method and application

Abstract

This invention belongs to the field of fabric treatment technology, specifically relating to a hydrophilic finishing agent for fabrics, its preparation method, and its application. The hydrophilic finishing agent comprises water and the following raw materials by mass percentage: 6%–7% hexamethylene diisocyanate trimer, 4%–5% polyether polyol, 6%–8% polyethylene glycol monomethyl ether, 0.5%–1% aminosulfonic acid, 1%–2% emulsifier, 0.5%–1% polyether amino silicone oil, and 0.1%–0.3% acetic acid. The finishing agent prepared by this invention exhibits good hydrophilicity, wash resistance, and yellowing resistance, and is suitable for finishing fabrics, especially nylon and nylon-containing blended fabrics.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of fabric treatment, and particularly relates to a fabric hydrophilic finishing agent and a preparation method and application thereof. BACKGROUND

[0002] Polyamide fiber, also known as nylon, has a long-chain structure connected by amide bonds. The polarity and coplanarity of amide groups in the molecule give strong hydrogen bonding force between the fiber molecular chains, resulting in easy crystallization and high crystallinity of the polyamide fiber. High crystallinity of the fiber not only gives the fiber high toughness, high strength and high wear resistance and elastic recovery, but also affects the moisture absorption of the polyamide fiber fabric. Therefore, when the polyamide fabric is used to make close-fitting clothes, it is easy to give people a hot feeling. In addition, the polyamide fabric is prone to static accumulation and thus adsorbs dust. In short, it cannot meet the comfort requirements of clothing.

[0003] Hydrophilic finishing is a processing technology mainly aimed at improving the air permeability, sweat removal and wearing comfort of fabrics. It not only has simple operation and low cost, but also greatly improves the hydrophilicity of the polyamide fabric without changing the original properties of the fiber, so as to achieve the purpose of improving the wearing comfort. The mainstream nylon hydrophilic agent technology on the market is: (1) through siloxane-polyether block copolymerization, relying on physical adsorption and weak crystallization, the treated fabric has poor washing resistance and the hydrophilicity is not durable; or (2) the fabric has good hydrophilicity, but at the same time the fabric feels hard, and the wearing fit and comfort are not good. SUMMARY

[0004] The following is a summary of the subject matter detailed in the detailed description. This summary is not intended to limit the scope of the claims.

[0005] The present application aims to at least solve one of the above-mentioned technical problems existing in the prior art. To this end, the present application proposes a fabric hydrophilic finishing agent and a preparation method and application thereof. The finishing agent prepared by the present application has good hydrophilicity, washing resistance, yellowing resistance and the like, and is suitable for fabric, especially the finishing of polyamide and blended fabrics containing polyamide.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0007] In one aspect of the present application, a fabric hydrophilic finishing agent is provided, which comprises water and the following preparation raw materials in mass percentage:

[0008] hexamethylene diisocyanate trimer 6% to 7%,

[0009] polyether polyol 4% to 5%,

[0010] polyethylene glycol monomethyl ether 6% to 8%,

[0011] amino sulfonic acid 0.5%~1%,

[0012] emulsifier 1%~2%,

[0013] polyether amino silicone oil 0.5%~1%,

[0014] acetic acid 0.1%~0.3%.

[0015] In the present application, hexamethylene diisocyanate trimer is selected instead of aromatic isocyanate, which reduces the risk of yellowing oxidation, and the isocyanurate ring of the trimer is more stable than the uretdione structure of the dimer, which is conducive to improving the wash resistance. Amino sulfonic acid is mixed with hexamethylene diisocyanate trimer, wherein the sulfonic acid group is a hydrophilic group, which can act as an internal emulsifying hydrophilic group when combined with hexamethylene diisocyanate trimer, thereby providing hydrophilicity to the system and improving the dispersibility of the waterborne polyisocyanate. Further reacted with polyether polyol to form hydrophilic (wherein the ether bond helps to improve the hydrophilic performance) polyurethane, which enhances the wash resistance and flexibility of the finishing agent.

[0016] Polyether amino silicone oil has good hydrophilicity, strong softness and excellent antistatic properties, etc., and can form effective molecular chain entanglement between the waterborne polyurethane, avoiding the reverse migration of hydrophilic and oleophilic segments, thereby reducing the microphase separation during the curing process after finishing, and greatly improving the hand feeling of the nylon fabric (including smoothness, softness, etc.). In addition, due to the presence of polyether segments, polyether amino silicone oil also has auxiliary antistatic properties.

[0017] On the one hand, the polyethylene glycol chain (PEG chain) in polyethylene glycol monomethyl ether is rich in ether bonds (-O-), which can form strong hydrogen bonds with water molecules, significantly reducing the surface tension of the fiber and significantly improving the hydrophilic efficiency. On the other hand, the terminal hydroxyl group (-OH) of polyethylene glycol monomethyl ether can react with isocyanate to form a covalent bond and anchor on the fiber surface, to some extent, enhancing the wash resistance; at the same time, it may reduce the yellowing caused by polyether amino silicone oil.

[0018] According to some embodiments of the present application, the average molecular weight of the polyether polyol is 500~10000g / mol, including but not limited to 500~8000g / mol, 500~6000g / mol, 1000~4000g / mol, 2000~4000g / mol, 2000~3000g / mol.

[0019] The average molecular weight of the polyether polyol has a certain influence on the hydrophilicity of the fabric finishing agent. If the average molecular weight is too small, the hydrophilicity is insufficient; but the present application finds that if the average molecular weight is too large, the yellowing resistance of the finishing agent decreases.

[0020] According to some embodiments of the present application, the polyether polyol comprises at least one of polyethylene glycol, polypropylene glycol, polytetrahydrofuran ether glycol, and polyglycerol.

[0021] According to some embodiments of the present application, the average molecular weight of the polyethylene glycol monomethyl ether is 300-5000 g / mol, including but not limited to 300-4000 g / mol, 300-3000 g / mol, 300-2000 g / mol, 400-1500 g / mol, 500-1000 g / mol, 600-800 g / mol, 750-800 g / mol.

[0022] According to some embodiments of the present application, the hydroxyl value of the polyethylene glycol monomethyl ether is 20-200 mgKOH / g, including but not limited to 30-150 mgKOH / g, 40-120 mgKOH / g, 50-100 mgKOH / g, 60-90 mgKOH / g.

[0023] Generally, the larger the molecular weight of the polyethylene glycol monomethyl ether, the poorer the wash resistance of the prepared finishing agent; at the same time, the lower the hydroxyl value, the lower the density of active hydroxyl groups at the molecular terminal, and the stronger the yellowing resistance of the finishing agent. The polyethylene glycol monomethyl ether with a specific range of molecular weight and hydroxyl value is used in the present application, and the balance between the wash resistance and the yellowing resistance of the finishing agent is achieved.

[0024] According to some embodiments of the present application, the emulsifier comprises at least one of fatty alcohol polyoxyethylene ether, fatty acid polyoxyethylene ester, isomeric tridecanol polyoxyethylene ether, and isomeric decanol polyoxyethylene ether.

[0025] According to some embodiments of the present application, the polyether amino silicone oil is a quaternary ammonium salt end-modified polyether amino silicone oil.

[0026] According to some embodiments of the present application, the viscosity of the quaternary ammonium salt end-modified polyether amino silicone oil is 550-950 mPa.s / 25℃.

[0027] According to some embodiments of the present invention, the average molecular weight of the quaternary ammonium salt-terminated modified polyether amino silicone oil is 1000-10000 g / mol (e.g., 1000-8000 g / mol, 1000-6000 g / mol, 1000-5000 g / mol, 2000-4000 g / mol, 3000-5000 g / mol, 3000-4000 g / mol, 3000-3500 g / mol), wherein the polysiloxane backbone accounts for 50-80 wt% (e.g., 55-80 wt%, 60-80 wt%, 65-75 wt%, 65-70 wt%) of the quaternary ammonium salt-terminated modified polyether amino silicone oil.

[0028] According to some embodiments of the present invention, the quaternary ammonium salt-terminated modified polyether amino silicone oil has the following structure: Where r1 is 20 to 200, R 16 It is a C8-C18 alkyl group. The quaternary ammonium salt-terminated modified polyether amino silicone oil of the present invention improves the yellowing resistance by introducing a quaternary ammonium salt structure to replace the original primary and secondary amine structure; in addition, the higher proportion of organosilicon segments (r1 = 20-200) can improve the poor hand feel after finishing caused by the poor flexibility and film-forming properties due to the polyether groups.

[0029] According to some embodiments of the present invention, the quaternary ammonium salt-terminated modified polyether amino silicone oil is a dimethylsiloxane 3-(3-((3-cocoylaminopropyl)dimethylamino)-2-hydroxypropoxy)propyl-terminated acetate (CAS 134737-05-6), and its trade names may be Abil Quat 3270, Abil Quat 3272, and Abil Quat 3474. The preferred quaternary ammonium salt-terminated modified polyether amino silicone oil of the present invention is Abil Quat 3272, wherein R... 16 It is a C11 alkyl group, r1 = 30.

[0030] In another aspect, the present invention provides a method for preparing the above-mentioned hydrophilic finishing agent for fabrics, comprising the following steps:

[0031] The polyether polyol is dehydrated at 110–150°C; then cooled to 75–100°C, hexamethylene diisocyanate trimer and aminosulfonic acid are added and stirred; then cooled to 60–70°C, polyethylene glycol monomethyl ether, emulsifier and polyether amino silicone oil are added and stirred; then cooled to 30–50°C, acetic acid is added to adjust the pH to 5.0–6.0, and the product is obtained.

[0032] The pH value of the finishing agent affects the finishing effect. For nylon fabrics, nylon is a polyamide fiber with numerous amide bonds in its molecular chain. These groups are prone to hydrolysis under strong acid (pH too low) or strong alkaline (pH too high) conditions, leading to molecular chain breakage, decreased fiber strength, and fabric damage. Nylon's isoelectric point is approximately 5-6. When the pH of the finishing agent equals the isoelectric point, the fiber surface is electrically neutral, without strong electrostatic repulsion. The finishing agent can be more uniformly and tightly adsorbed or deposited onto the fiber surface, and is less likely to be repelled by the fiber's charge. This ensures the uniformity and efficiency of the finishing effect (such as softness, antistatic properties, hydrophilicity, etc.).

[0033] According to some embodiments of the present invention, the dehydration treatment is carried out until the moisture content in the system is ≤1‰, preferably ≤0.5‰.

[0034] In another aspect, the present invention provides the application of the above-mentioned hydrophilic finishing agent in fabric finishing, wherein the fabric is nylon or a blended fabric containing nylon.

[0035] In another aspect, the present invention provides a hydrophilic fabric, which is obtained by applying the above-mentioned fabric hydrophilic finishing agent to the fabric, removing excess liquid, and then drying.

[0036] According to some embodiments of the present invention, the hydrophilic fabric is obtained by applying the fabric hydrophilic finishing agent to the fabric at a bath ratio (fabric: finishing agent mass ratio) of 1:10-30, removing excess liquid, and then drying at 120-180°C (e.g., 140-160°C) for 3-10 minutes (e.g., 4-6 minutes).

[0037] The application process involves soaking at 25–40°C for 5–20 minutes.

[0038] According to some embodiments of the present invention, the liquor ratio is 1:15-30, 1:15-25, or 1:20-30.

[0039] According to some embodiments of the present invention, the removal of excess liquid involves pressing the rollers until the residual rate is 70% to 90%.

[0040] According to some embodiments of the present invention, the fabric is nylon or a blended fabric containing nylon. The blended fabric refers to a fabric obtained by mixing at least one of hemp fiber, viscose fiber, modal fiber, spandex, polyester, and polyether ester elastic fiber with nylon in a certain proportion.

[0041] Compared with the prior art, the present invention has at least the following beneficial effects:

[0042] The fabric hydrophilic finishing agent provided by this invention has good hydrophilicity, washability, yellowing resistance, and antistatic properties. It is suitable for finishing fabrics, especially nylon and nylon-containing blended fabrics. The resulting fabrics have a soft and comfortable hand feel, excellent hydrophilicity, and good durability. Detailed Implementation

[0043] The following will describe the concept and technical effects of the present invention clearly and completely with reference to embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention.

[0044] When a numerical range is disclosed herein, the range is considered continuous and includes the minimum and maximum values ​​of the range, as well as every value between the minimum and maximum values. Furthermore, when the range refers to integers, it includes every integer between the minimum and maximum values ​​of the range. Additionally, when multiple ranges are provided to describe a feature or characteristic, the ranges may be combined. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all subranges to which they are incorporated.

[0045] Unless otherwise specified, in this invention, "about" means that the allowable error is within ±10%, further, within ±5%, and even further, within ±2%.

[0046] "And / or" is used to indicate that one or both of the described situations may occur, for example, A and / or B includes (A and B) and (A or B).

[0047] Unless otherwise specified in the examples, the procedures should be performed under standard conditions or conditions recommended by the manufacturer. Reagents or instruments whose manufacturers are not specified are all commercially available products.

[0048] Example 1

[0049] This embodiment provides a hydrophilic bonding agent for nylon and its blended fabrics, the raw materials for which are prepared as follows:

[0050] Hexamethylene diisocyanate trimer (Covestro, Desmodur N3300) 7%,

[0051] Polypropylene glycol (Maclean, P815574, average molecular weight approximately 3000 g / mol) 4.5%,

[0052] Polyethylene glycol monomethyl ether (Jiangsu Haian Petrochemical Plant, MPEG-750, average molecular weight approximately 750 g / mol, hydroxyl value 68-83 mgKOH / g) 8%,

[0053] Aminosulfonic acid (purchased from Aladdin) 0.5%,

[0054] Fatty alcohol polyoxyethylene ether (BASF Chemicals AEO-9) 1%,

[0055] Polyether amino silicone oil (Evonik ABIL Quat 3272) 0.8%,

[0056] Acetic acid (purchased from Aladdin) 0.1%,

[0057] Add deionized water to bring the solution to 100%.

[0058] The preparation steps of the hydrophilic bonding agent for nylon and its blended fabrics in this embodiment are as follows:

[0059] Preheat the reactor to 120°C, add polypropylene glycol, and dehydrate under vacuum for 30 minutes until the moisture content is ≤0.5‰. Cool to 80°C, add hexamethylene diisocyanate trimer and aminosulfonic acid, and stir for 40 minutes to obtain a polyurethane matrix. Cool to 65°C, slowly add polyethylene glycol monomethyl ether, fatty alcohol polyoxyethylene ether, and polyether amino silicone oil, and stir for 40 minutes to ensure uniform mixing. Cool to below 40°C, add dilute acetic acid solution to adjust the pH of the system to 5.0–6.0. ​​Make up the volume to 100% with deionized water and continue stirring for 40 minutes. Filter and discharge the material.

[0060] Example 2

[0061] This embodiment provides a hydrophilic bonding agent for nylon and its blended fabrics, the raw materials for which are prepared as follows:

[0062] Hexamethylene diisocyanate trimer (Covestro, Desmodur N3300) 6%,

[0063] Polypropylene glycol (Maclean, P815574, average molecular weight approximately 3000 g / mol) 5%,

[0064] Polyethylene glycol monomethyl ether (Jiangsu Haian Petrochemical Plant, MPEG-750, average molecular weight approximately 750 g / mol, hydroxyl value 68-83 mgKOH / g) 6%,

[0065] 1% aminosulfonic acid (purchased from Aladdin)

[0066] Fatty alcohol polyoxyethylene ether (BASF Chemicals AEO-9) 2%,

[0067] Polyether amino silicone oil (Evonik ABIL Quat 3272) 0.5%,

[0068] Acetic acid (purchased from Aladdin) 0.2%,

[0069] Add deionized water to bring the solution to 100%.

[0070] The preparation steps of the hydrophilic bonding agent for nylon and its blended fabrics in this embodiment are as follows:

[0071] Preheat the reactor to 120°C, add polypropylene glycol, and dehydrate under vacuum for 10 minutes until the moisture content is ≤1‰. Cool to 75°C, add hexamethylene diisocyanate trimer and aminosulfonic acid, and stir for 40 minutes to obtain a polyurethane matrix. Cool to 60°C, slowly add polyethylene glycol monomethyl ether, fatty alcohol polyoxyethylene ether, and polyether amino silicone oil, and stir for 40 minutes to ensure uniform mixing. Cool to below 35°C, add dilute acetic acid solution to adjust the pH of the system to 5.0–6.0. ​​Make up the volume to 100% with deionized water and continue stirring for 60 minutes. Filter and discharge the material.

[0072] Example 3

[0073] This embodiment provides a hydrophilic bonding agent for nylon and its blended fabrics, referring to Embodiment 2, the only difference being that the molecular weight of the selected polypropylene glycol is different (Maclean, P815573, average molecular weight about 1000 g / mol).

[0074] The preparation steps of the hydrophilic bonding agent for nylon and its blended fabrics in this embodiment are the same as those in Example 2.

[0075] Example 4

[0076] This embodiment provides a hydrophilic bonding agent for nylon and its blended fabrics, referring to Embodiment 2, the only difference being that the molecular weight of the selected polypropylene glycol is different (Maclean, P815575, average molecular weight about 4000 g / mol).

[0077] The preparation steps of the hydrophilic bonding agent for nylon and its blended fabrics in this embodiment are the same as those in Example 2.

[0078] Example 5

[0079] This embodiment provides a hydrophilic bonding agent for nylon and its blended fabrics, referring to Example 1, except that the molecular weight of the selected polyethylene glycol monomethyl ether is different (Jiangsu Haian Petrochemical Plant, MPEG-400, average molecular weight about 400g / mol, hydroxyl value 135-145mgKOH / g).

[0080] The preparation steps of the hydrophilic bonding agent for nylon and its blended fabrics in this embodiment are the same as those in Example 1.

[0081] Example 6

[0082] This embodiment provides a hydrophilic bonding agent for nylon and its blended fabrics, referring to Example 1, except that the molecular weight of the selected polyethylene glycol monomethyl ether is different (Jiangsu Haian Petrochemical Plant, MPEG-1500, average molecular weight about 1500 g / mol, hydroxyl value 34-42 mg KOH / g).

[0083] The preparation steps of the hydrophilic bonding agent for nylon and its blended fabrics in this embodiment are the same as those in Example 1.

[0084] Example 7

[0085] This embodiment provides a hydrophilic bonding agent for nylon and its blended fabrics, referring to Embodiment 1, except that the polyether amino silicone oil (Evonik ABIL Quat 3272) is replaced with Shin-Etsu Chemical X-22-3939A polyether amino silicone oil.

[0086] The preparation steps of the hydrophilic bonding agent for nylon and its blended fabrics in this embodiment are the same as those in Example 1.

[0087] Comparative Example 1

[0088] This comparative example provides a hydrophilic bonding agent for nylon and its blended fabrics, referring to Example 1, except that the hexamethylene diisocyanate trimer is replaced with 4,4-diphenylmethane diisocyanate.

[0089] The preparation steps of the hydrophilic bonding agent for nylon and its blended fabrics in this comparative example are as described in Example 1.

[0090] Comparative Example 2

[0091] This comparative example provides a hydrophilic bonding agent for nylon and its blended fabrics, referring to Example 1, except that the polyether amino silicone oil (Evonik ABIL Quat 3272) is replaced with an amino silicone oil emulsion (Slocor, SiCare 2970T).

[0092] The preparation steps of the hydrophilic bonding agent for nylon and its blended fabrics in this comparative example are as described in Example 1.

[0093] Comparative Example 3

[0094] This comparative example provides a hydrophilic bonding agent for nylon and its blended fabrics, referring to Example 1, except that the polyether amino silicone oil (Evonik ABIL Quat 3272) is replaced with commercially available polyether silicone oil.

[0095] The preparation steps of the hydrophilic bonding agent for nylon and its blended fabrics in this comparative example are as described in Example 1.

[0096] Comparative Example 4

[0097] This comparative example provides a hydrophilic bonding agent for nylon and its blended fabrics, and the raw materials for its preparation are as follows:

[0098] Hexamethylene diisocyanate trimer (Covestro, Desmodur N3300) 6%,

[0099] Polypropylene glycol (Maclean, P815574, average molecular weight approximately 3000 g / mol) 5%,

[0100] Polyethylene glycol monomethyl ether (Jiangsu Haian Petrochemical Plant, MPEG-750, average molecular weight approximately 750 g / mol, hydroxyl value 68-83 mgKOH / g) 6%,

[0101] Aminosulfonic acid (purchased from Aladdin) 0.1%,

[0102] Fatty alcohol polyoxyethylene ether (BASF Chemicals AEO-9) 2%,

[0103] Polyether amino silicone oil (Evonik ABIL Quat 3272) 0.5%,

[0104] Acetic acid 0.2%,

[0105] Add deionized water to bring the solution to 100%.

[0106] The preparation steps of the hydrophilic bonding agent for nylon and its blended fabrics in this comparative example were carried out in accordance with Example 2.

[0107] The fabric was finished using an immersion method: Nylon fabric was immersed in the finishing agents prepared in Examples 1-7 and Comparative Examples 1-4 at a liquor ratio of 1:20 for 10 minutes at 30°C. Then, it was passed through a pressure roller with a pick-up rate of 80%. The fabric was then placed in a drying oven at 150°C for 5 minutes. After removing the fabric from the drying oven, a hydrophilic fabric was obtained. The hydrophilic fabric was equilibrated under standard conditions (temperature 20°C, relative humidity 65%) for 24 hours. Its hydrophilicity, wash resistance, smoothness, softness, antistatic properties, and whiteness were then evaluated using comprehensive performance tests. The performance test results are shown in Table 1.

[0108] The testing steps for each item are as follows:

[0109] (1) Hydrophilicity: Wetting time was used to determine the hydrophilicity. In an environment with an average temperature of 25℃ and an average relative humidity of 60%, the fabric to be tested was laid flat and stretched taut at the opening of the container. A drop of water was dropped about 3cm away from the fabric surface using a dropper. Timing was started, and the time it took for the water droplet to diffuse on the sample until there was no specular reflection was recorded. Multiple measurements were taken, and the average value was taken as the diffusion time of the fabric to be tested. The shorter the water droplet diffusion time, the better the hydrophilicity.

[0110] (2) Washability: After the fabric to be tested is washed 10 times, its hydrophilicity is tested again, and the change in hydrophilicity between the two tests is compared. Change in hydrophilicity = diffusion time after washing - diffusion time before washing.

[0111] (3) Smoothness and softness: The smoothness and softness of the fabric under test were tested using the WOOL HandleMeter and the AATCC hand feel test standard.

[0112] (4) Antistatic properties: According to AATCC76-1995 test method for antistatic properties of fabrics: the antistatic ohm test is performed on the test material with a pre-split distance using an antistatic meter and electrodes. The larger the antistatic ohm value (R), the worse the antistatic ability.

[0113] (5) Whiteness test: The whiteness of textile fibers shall be tested in accordance with the Test Method for Whiteness of Textile Fibers (GB / T17644-2008).

[0114] Table 1

[0115]

[0116] Therefore, it can be concluded that, compared with Comparative Examples 1 to 4, the fabrics made by soaking and finishing the nylon and its blended fabrics prepared using the hydrophilic bonding agent of Examples 1 to 7 of the present invention have excellent hydrophilicity, washability, antistatic properties and yellowing resistance; at the same time, these fabrics also have a smooth and soft hand feel.

[0117] The above description provides a detailed account of the embodiments of the present invention. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

Claims

1. A hydrophilic finishing agent for fabrics, characterized in that, Including water and the following preparation raw materials by mass percentage: Hexamethylene diisocyanate trimer 6%~7%, Polyether polyol 4%~5%, Polyethylene glycol monomethyl ether 6%~8%, Aminosulfonic acid 0.5%~1%, Emulsifier 1%~2%, Polyether amino silicone oil 0.5%~1%, Acetic acid 0.1%~0.3%; The preparation method of the fabric hydrophilic finishing agent includes the following steps: The polyether polyol is dehydrated at 110-150 °C; then cooled to 75-100 °C, hexamethylene diisocyanate trimer and aminosulfonic acid are added and stirred; then cooled to 60-70 °C, polyethylene glycol monomethyl ether, emulsifier and polyether amino silicone oil are added and stirred; then cooled to 30-50 °C, acetic acid is added to adjust the pH to 5.0-6.0, and the product is obtained.

2. The fabric hydrophilic finishing agent according to claim 1, characterized in that, The average molecular weight of the polyether polyol is 500~10000 g / mol.

3. The fabric hydrophilic finishing agent according to claim 2, characterized in that, The polyether polyol includes at least one of polyethylene glycol, polypropylene glycol, polytetrahydrofuran ether glycol, and polyglycerol.

4. The fabric hydrophilic finishing agent according to claim 1, characterized in that, The average molecular weight of the polyethylene glycol monomethyl ether is 300~5000 g / mol.

5. The fabric hydrophilic finishing agent according to claim 1, characterized in that, The emulsifier includes at least one of fatty alcohol polyoxyethylene ether, fatty acid polyoxyethylene ester, isomeric tridecyl alcohol polyoxyethylene ether, and isomeric decayl alcohol polyoxyethylene ether.

6. The fabric hydrophilic finishing agent according to claim 1, characterized in that, The polyether amino silicone oil is a quaternary ammonium salt end-group modified polyether amino silicone oil.

7. The application of the fabric hydrophilic finishing agent as described in any one of claims 1 to 6 in fabric finishing, wherein the fabric is nylon or a blended fabric containing nylon.

8. A hydrophilic fabric, characterized in that, The fabric is obtained by applying the hydrophilic finishing agent of any one of claims 1 to 6 to the fabric, removing excess liquid, and then drying.

9. The hydrophilic fabric according to claim 8, characterized in that, The fabric hydrophilic finishing agent is applied to the fabric at a bath ratio of 1:10~30. After removing excess liquid, the fabric is dried at 120~180 ℃ for 3~10 minutes to obtain the final product. The application process involves soaking at 25-40°C for 5-20 minutes.

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