A high wettability profiled polyester fiber spinning finish and its preparation method

Abstract

The present invention relates to a high wettability profiled polyester fiber spinning finish and a preparation method thereof. Weigh and prepare the required materials according to the actual usage requirements; pre-equilibrate each material at 35°C to 45°C before feeding; sequentially add a leveling agent, a bundling agent, an antistatic agent, a wetting and penetrating agent, an anti-coking agent, and a wetting and penetrating auxiliary agent, and adopt the method of feeding while stirring to make each material fully mixed and uniform; the finish described in the present invention is a high wettability profiled polyester fiber spinning finish, containing 5 to 10 wt% of a main wetting and penetrating agent composed of isotridecyl polyoxyethylene polyoxypropylene ether and pentaerythritol oleate, and containing a wetting and penetrating auxiliary agent; the addition of the wetting and penetrating auxiliary agent greatly improves the wetting and penetrating performance of the finish, the wetting and penetrating performance of the finish is excellent, and it can better adapt to the production process of profiled polyester fibers.

Description

Technical Field

[0001] The present invention belongs to the technical field of spinning finishes, and specifically relates to a high-wettability profiled polyester fiber spinning finish and a preparation method thereof. Background Art

[0002] With the rapid development of the textile industry, the industrial production of synthetic fibers has increased rapidly. As of 2023, the global synthetic fiber market has accounted for more than 70% of the total fiber market. Although traditional synthetic fibers still dominate the market, they face challenges such as single product, low added value, and performance homogenization, and are gradually difficult to meet the increasingly diverse market demands. At this time, profiled fibers, as an innovative solution, can effectively address these problems. The shape and size of profiled fibers can be designed according to different application requirements, thus significantly improving the material properties. Their unique shape makes up for the deficiencies of circular fibers in terms of torsional strength, roughness, elasticity, appearance, etc., and has good properties such as gloss, dyeing, stain resistance, flame retardancy, heat insulation, sound insulation, etc., and has been widely used in the fields of textiles, composite materials, construction, biomedicine, automobiles, aerospace, optics, etc.

[0003] Due to the large specific surface area of profiled fibers, the oil absorption amount is more than that of circular fibers at the same spinning speed, which puts forward higher requirements for the wettability of the spinning finish. However, traditional spinning finishes often have difficulty quickly and fully wetting the fibers, resulting in the inability to form a uniform oil film on the fiber surface. This will increase the frictional resistance between the fiber and the air, as well as the friction between the fiber and the wire guiding device, thus affecting the spinnability of the fiber and the hand feeling of the fabric.

[0004] The literature "Performance and Application Research of Special Oil Agent FM-115 for Lustrous Profiled Polyester FDY" (Synthetic Fiber Industry, 2024, 47(03): 42-46.) reported the special oil agents FM-115 and F1724 for lustrous profiled polyester FDY, and compared the performances of the two oil agents. The surface tensions of the emulsions of the two oil agents are 29.1 mN / m and 31.3 mN / m respectively. This is because an appropriate amount of sodium dioctyl sulfosuccinate is added to the formula of oil agent FM-115 to reduce the surface tension of the oil agent, thereby improving the wettability of the spinning finish. However, sodium dioctyl sulfosuccinate has strong foaming properties, resulting in uneven coverage of the oil agent on the fiber surface, thus affecting the quality of the fiber product.

[0005] Patent CN1811050A discloses a polyester FDY nano-spinning finish and a preparation method thereof, which adds inorganic nano-additives to the spinning finish to improve the overall performance of the oil agent. The surface tension (10% aqueous solution) of the prepared spinning finish is 34.9 mN / m. However, the inorganic nano-additives are prone to uneven dispersion, resulting in a decline in the performance of the spinning finish.

[0006] In summary, the existing special-shaped polyester fiber spinning finish has problems such as insufficient wettability, and agglomeration and precipitation phenomena occur between the components of the finish. Summary of the Invention

[0007] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a high-wettability special-shaped polyester fiber spinning finish and a preparation method. The special-shaped polyester fiber spinning finish disclosed by the present invention has excellent wettability, and no agglomeration, precipitation and other phenomena occur between the components of the finish.

[0008] To achieve the above purpose, the technical scheme adopted by the present invention is as follows:

[0009] A high-wettability special-shaped polyester fiber spinning finish contains 5-10 wt% of a main wetting and penetrating agent; the main wetting and penetrating agent is composed of isotridecyl polyoxyethylene polyoxypropylene ether and pentaerythritol oleate in a mass ratio of 2-2.5:0.5-1.

[0010] It is emphasized that the content of the main wetting and penetrating agent in the high-wettability special-shaped polyester fiber spinning finish of this scheme does not exceed 10 wt%, otherwise, it may cause an increase in the viscosity of the high-wettability special-shaped polyester fiber spinning finish, thereby affecting the wettability of the finish.

[0011] Isotridecyl polyoxyethylene polyoxypropylene ether is a type of non-ionic surfactant. Its molecular structure contains a hydrophilic polyoxyethylene part and a hydrophobic polyoxypropylene part, which can effectively reduce the surface tension of the finish, thereby enhancing the contact between the finish and the fiber surface and improving the wetting and penetration effect; moreover, the molecule also contains a branched alkyl group, which increases the steric hindrance of the molecule, provides more contact area, effectively reduces the surface tension of the finish, and thus improves its wetting and penetration performance.

[0012] The molecular structure of pentaerythritol oleate has 4 groups of symmetric chains, which greatly increases the rigidity of the molecular chain, thereby increasing the wear resistance of the finish; the molecular structure of pentaerythritol oleate shows amphiphilicity, and this dual property enables it to have good wetting ability at the oil-water interface, which can effectively reduce the surface tension, thereby promoting the spreading of the finish on the fiber surface.

[0013] Furthermore, the high-wettability special-shaped polyester fiber spinning finish also contains 3-5 wt% of a wetting and penetrating auxiliary agent, and the wetting and penetrating auxiliary agent is coconut oil amide propyl hydroxysulfobetaine.

[0014] Cocamidopropyl hydroxysultaine can synergize with the main wetting and penetrating agent, thereby enhancing its wetting and penetrating properties. As an excellent amphoteric surfactant, it has both an anionic hydrophilic group (sulfonic acid group) and a cationic hydrophilic group (quaternary ammonium salt group). When it is mixed with the main wetting and penetrating agent, the anionic head group inserts between the zwitterionic head groups, making the surfactant molecules form a denser liquid film, enhancing its ability to reduce surface tension, and thus enhancing its spreading and wetting abilities.

[0015] Furthermore, the spinning finish for high-wettability profiled polyester fibers also contains 55 - 65 wt% of a smoothing agent, and the smoothing agent is white oil.

[0016] Furthermore, the spinning finish for high-wettability profiled polyester fibers also contains 5 - 10 wt% of a bundling agent, and the bundling agent is one or a combination of coconut oil diethanolamide and polyethylene glycol 400 oleate.

[0017] Furthermore, the spinning finish for high-wettability profiled polyester fibers also contains 15 - 20 wt% of an antistatic agent, and the antistatic agent is one or a combination of isomeric tridecyl alcohol phosphate and isomeric tridecyl alcohol polyoxyethylene ether sulfate. The molecular structure of this antistatic agent can reduce the intermolecular interaction force, making the finish more easily penetrate and wet the fiber surface; in addition, when it is formulated with a wetting aid, a synergistic effect will occur, improving the overall wettability and emulsifying property of the finish.

[0018] Due to the poor wetting effect of traditional polyester fiber spinning finishes, it is often difficult to quickly and fully wet the fibers, unable to meet the spinning production of profiled fibers. The present invention studies the action modes of the wetting and penetrating agent and the wetting and penetrating aid in the finish formulation and their synergistic effect to enhance the wetting and penetrating effect of the spinning finish for profiled polyester fibers.

[0019] As a preferred technical solution:

[0020] The spinning finish for high-wettability profiled polyester fibers as described above also contains 2 - 5 wt% of an anti-coking agent, and the anti-coking agent is a fatty acid methyl ester ethoxylate type double-capped surfactant.

[0021] The spinning finish for high-wettability profiled polyester fibers as described above has a spinning speed of 4600 m / min, a drawing temperature of 105 °C, and a setting temperature of 135 °C during the spinning process of profiled polyester fibers.

[0022] The present invention also provides a preparation method for a spinning finish for high-wettability profiled polyester fibers, including the following steps:

[0023] S1. Material preparation

[0024] Weigh and prepare the required materials according to the actual usage requirements;

[0025] S2. Material Preparation

[0026] 1) Preparation steps: Add a leveling agent, a bundling agent, an antistatic agent, a main wetting and penetrating agent, an anti-coking agent, and a wetting and penetrating aid in sequence. Before adding each material, pre-equilibrate it at 35°C to 45°C, and use the method of adding materials while stirring to make each material fully and evenly mixed;

[0027] Preferably, control the temperature of the reaction kettle containing the mixed materials at 35°C to 45°C, set the stirring speed at 600 to 800 r / min, and react for 1 to 2 h to obtain a high-wetting profiled polyester fiber spinning finish.

[0028] Beneficial effects:

[0029] (1) The finish of the present invention uses a combination of isotridecyl polyoxyethylene polyoxypropylene ether and pentaerythritol oleate as the main wetting and penetrating agent, which greatly improves the wetting and penetrating performance of the finish, can quickly and evenly cover the fibers, and enables the smooth progress of spinning.

[0030] (2) The wetting and penetrating aid used in the finish of the present invention can preferably synergistically act with the main wetting and penetrating agent, thereby enhancing the wetting and penetrating performance of the finish. Its action can make the surfactant molecules form a denser liquid film, enhance the ability to reduce its surface tension, and further enhance its spreading and wetting ability.

[0031] (3) The finish of the present invention uses isotridecyl phosphate and sodium isotridecyl polyoxyethylene ether sulfate as antistatic agents, which not only have excellent antistatic properties but also can be compatible with the wetting and penetrating aid to produce a synergistic effect and enhance the overall wettability of the finish.

[0032] (4) The finish of the present invention gives full play to the structure-activity relationship and synergistic effect between each component and the performance of the finish, so that the wetting and penetrating performance of the finish is greatly improved. Specific Embodiments

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0034] The following are the performance test methods in each embodiment:

[0035] Conductivity (10% aqueous solution): Add water to the finish prepared in each of the following embodiments, and the mass of water accounts for 10% of the overall solution, measured according to GB / T11007;

[0036] Wettability: At 25°C, refer to GB / T 11983-2008 "Surface Active Agents - Determination of Wettability - Immersion Method" to measure the wetting time of the sample to be tested;

[0037] Surface tension (1% aqueous solution): Measure at 25°C using a QBZY type platinum plate surface tension meter (QBZY-1 type, Shanghai Fangrui Instrument Co., Ltd.);

[0038] Fiber specific resistance: Measure using an automatic digital fiber specific resistance meter according to GB / T14342-2015;

[0039] Fiber friction coefficient: Measure using an LFY-110 type yarn dynamic friction tester (LFY-110 type, Shandong Textile Science Research Institute);

[0040] Oil content: Measure using a fiber oil rapid extractor (YG981 type, Changzhou Shuanggu Dunda Electromechanical Technology Co., Ltd.) according to the national standard GB / T6504-2008.

[0041] The following are the manufacturers and grades of the raw materials involved in the examples:

[0042] Isotridecyl polyoxyethylene polyoxypropylene ether: The manufacturer is Guangdong Wengjiang Chemical Reagent Co., Ltd.; the grade is 78330-23-1

[0043] Pentaerythritol oleate: The manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., and the grade is 19321-40-5;

[0044] Cocamidopropyl hydroxysultaine: The manufacturer is Henan Tianfu Chemical Co., Ltd., and the grade is 68139-30-0;

[0045] White oil (liquid paraffin): The manufacturer is Shanghai Macklin Biochemical Technology Co., Ltd., and the grade is 8042-47-5;

[0046] Coconut oil diethanolamide: The manufacturer is Shanghai Macklin Biochemical Technology Co., Ltd., and the grade is 6863-42-9;

[0047] Polyethylene glycol 400 oleate: The manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., and the grade is 9004-96-0;

[0048] Isotridecyl phosphate: The manufacturer is Nantong Chenrun Chemical Co., Ltd.;

[0049] Isotridecyl polyoxyethylene ether sulfate: Guangdong Wengjiang Chemical Reagent Co., Ltd.;

[0050] Fatty acid methyl ester ethoxylate double-capped surfactant: The manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., and the grade is 65218-33-7;

[0051] Example 1: A preparation method of a spinning finish for high wettability profiled polyester fiber, the specific steps are as follows:

[0052] (1) Preparation of raw materials;

[0053] Isotridecyl polyoxyethylene polyoxypropylene ether;

[0054] Pentaerythritol oleate;

[0055] Wetting and penetrating aid: Cocamidopropyl hydroxysultaine;

[0056] Smoothing agent: White oil;

[0057] Clustering agent: Coconut oil diethanolamide;

[0058] Antistatic agent: Isotridecyl phosphate salt;

[0059] Anti-coking agent: Fatty acid methyl ester ethoxylate double-capped surfactant;

[0060] (2) Prepare the main wetting and penetrating agent;

[0061] Configure isotridecyl polyoxyethylene polyoxypropylene ether and pentaerythritol oleate with a mass ratio of 2:1 to obtain the main wetting and penetrating agent;

[0062] (3) Weigh 8 wt% of the main wetting and penetrating agent, 4 wt% of the wetting and penetrating aid, 60 wt% of the smoothing agent, 7 wt% of the clustering agent, 17 wt% of the antistatic agent, and 4 wt% of the anti-coking agent by proportion. Then pre-equilibrate each material at 40 °C. Then, in a way of adding materials while stirring, add the smoothing agent, clustering agent, antistatic agent, main wetting and penetrating agent, anti-coking agent, and wetting and penetrating aid in sequence. Then react at a temperature of 40 °C and a stirring speed of 700 r / min for 1.5 h to obtain the spinning finish for high wettability profiled polyester fiber.

[0063] The finally prepared spinning finish for high wettability profiled polyester fiber is in a yellow transparent state, with a conductivity of 1089 μS / cm, a wetting time of 4.59 s, and a surface tension of 25.8 mN / m.

[0064] The finally prepared profiled polyester fiber has a fiber specification of 134 dtex / 72 f, a fiber specific resistance of 3.5×10 7 Ω·cm, a fiber friction coefficient of 0.447, and an oil content of 0.8%.

[0065] Comparative Example 1: A preparation method of a spinning finish for high wettability profiled polyester fiber, which is basically the same as Example 1, except that: the main wetting and penetrating agent is only composed of isotridecyl polyoxyethylene polyoxypropylene ether.

[0066] The finally obtained spinning finish for profiled polyester fiber with high wettability is in a yellow transparent state, with a conductivity of 1056 μS / cm, a wetting time of 6.77 s, and a surface tension of 27.9 mN / m.

[0067] The finally obtained profiled polyester fiber has a fiber specification of 133 dtex / 72 f, a fiber specific resistance of 4.7×10 7 Ω·cm, a fiber friction coefficient of 0.3455, and an oil content of 0.7%.

[0068] Comparative Example 2: A preparation method of a spinning finish for profiled polyester fiber with high wettability, which is basically the same as that in Example 1, except that: the main wetting and penetrating agent consists only of pentaerythritol oleate.

[0069] The finally obtained spinning finish for profiled polyester fiber with high wettability is in a yellow transparent state, with a conductivity of 1066 μS / cm, a wetting time of 6.69 s, and a surface tension of 27.1 mN / m.

[0070] The finally obtained profiled polyester fiber has a fiber specification of 134 dtex / 72 f, a fiber specific resistance of 4.3×10 7 Ω·cm, a fiber friction coefficient of 0.329, and an oil content of 0.7%.

[0071] Example 2: A preparation method of a spinning finish for profiled polyester fiber with high wettability, the specific steps are as follows:

[0072] (1) Preparation of raw materials;

[0073] Iso-tridecyl polyoxyethylene polyoxypropylene ether;

[0074] Pentaerythritol oleate;

[0075] Wetting and penetrating aid: Cocamidopropyl hydroxysultaine;

[0076] Smoothing agent: White oil;

[0077] Bundle agent: Coconut oil diethanolamide;

[0078] Antistatic agent: Iso-tridecyl phosphate salt;

[0079] Anti-coking agent: Fatty acid methyl ester ethoxylate double-capped surfactant;

[0080] (2) Preparation of the main wetting and penetrating agent;

[0081] Mix iso-tridecyl polyoxyethylene polyoxypropylene ether and pentaerythritol oleate in a mass ratio of 2:0.5 to obtain the main wetting and penetrating agent;

[0082] (3) Weigh 5 wt% of the main wetting and penetrating agent, 3 wt% of the wetting and penetrating aid, 65 wt% of the smoothing agent, 5 wt% of the bundling agent, 20 wt% of the antistatic agent, and 2 wt% of the anti-coking agent proportionally. Then pre-equilibrate each material at 35°C. Next, in the way of adding materials while stirring, add the smoothing agent, bundling agent, antistatic agent, main wetting and penetrating agent, anti-coking agent, and wetting and penetrating aid in sequence. Then react at a temperature of 35°C and a stirring speed of 600 r / min for 1 h to obtain a spinning finish for high-wettability profiled polyester fiber.

[0083] The finally obtained spinning finish for high-wettability profiled polyester fiber presents a yellow transparent state, with a conductivity of 1207 μS / cm, a wetting time of 5.17 s, and a surface tension of 26.2 mN / m.

[0084] The finally obtained profiled polyester fiber has a fiber specification of 134 dtex / 72f, a fiber specific resistance of 2.9×10 7 Ω·cm, a fiber friction coefficient of 0.381, and an oil content of 0.8%.

[0085] Example 3: A preparation method of a spinning finish for high-wettability profiled polyester fiber, the specific steps are as follows:

[0086] (1) Preparation of raw materials;

[0087] Iso-tridecyl polyoxyethylene polyoxypropylene ether;

[0088] Pentaerythritol oleate;

[0089] Wetting and penetrating aid: Cocamidopropyl hydroxysultaine;

[0090] Smoothing agent: White oil;

[0091] Bundling agent: Polyethylene glycol 400 oleate;

[0092] Antistatic agent: Iso-tridecyl polyoxyethylene ether sodium sulfate;

[0093] Anti-coking agent: Fatty acid methyl ester ethoxylate double-capped surfactant;

[0094] (2) Prepare the main wetting and penetrating agent;

[0095] Prepare the main wetting and penetrating agent by configuring iso-tridecyl polyoxyethylene polyoxypropylene ether and pentaerythritol oleate with a mass ratio of 2.5:0.5.

[0096] (3) Weigh 10 wt% of the main wetting and penetrating agent, 5 wt% of the wetting and penetrating aid, 55 wt% of the smoothing agent, 10 wt% of the bundling agent, 15 wt% of the antistatic agent, and 5 wt% of the anti-coking agent proportionally. Then pre-equilibrate each material at 45 °C. Next, add the smoothing agent, bundling agent, antistatic agent, main wetting and penetrating agent, anti-coking agent, and wetting and penetrating aid in sequence in a way of adding while stirring. Then react at a temperature of 45 °C and a stirring speed of 800 r / min for 2 h to obtain the spinning finish for profiled polyester fiber with high wettability.

[0097] The finally obtained spinning finish for profiled polyester fiber with high wettability is in a yellow transparent state, with a conductivity of 1012 μS / cm, a wetting time of 5.51 s, and a surface tension of 26.7 mN / m.

[0098] The finally obtained profiled polyester fiber has a fiber specification of 132 dtex / 72 f, a fiber specific resistance of 5.6×10 7 Ω·cm, a fiber friction coefficient of 0.3814, and an oil content of 0.9%.

[0099] Example 4: A preparation method of a spinning finish for profiled polyester fiber with high wettability, the specific steps are as follows:

[0100] (1) Preparation of raw materials;

[0101] Iso-tridecyl alcohol polyoxyethylene polyoxypropylene ether;

[0102] Pentaerythritol oleate;

[0103] Wetting and penetrating aid: Cocamidopropyl hydroxysultaine;

[0104] Smoothing agent: White oil;

[0105] Bundling agent: A mixture of coconut oil diethanolamide and polyethylene glycol 400 oleate with a mass ratio of 2:1;

[0106] Antistatic agent: A mixture of isomeric tridecyl alcohol phosphate and isomeric tridecyl alcohol polyoxyethylene ether sodium sulfate with a mass ratio of 1:1;

[0107] Anti-coking agent: Fatty acid methyl ester ethoxylate double-capped surfactant;

[0108] (2) Prepare the main wetting and penetrating agent;

[0109] Prepare by mixing sodium lauryl polyoxyethylene ether sulfate and potassium lauryl phosphate with a mass ratio of 1.5:2 to obtain the main antistatic agent;

[0110] (3)Weigh 7 wt% of the main wetting and penetrating agent, 4 wt% of the wetting and penetrating aid, 64 wt% of the smoothing agent, 6 wt% of the bundling agent, 16 wt% of the antistatic agent, and 3 wt% of the anti-coking agent proportionally. Then pre-equilibrate each material at 37°C. Then, in the way of adding materials while stirring, add the smoothing agent, bundling agent, antistatic agent, main wetting and penetrating agent, anti-coking agent, and wetting and penetrating aid in sequence. Then react for 1.5 h at a temperature of 37°C and a stirring speed of 750 r / min to obtain the spinning finish for high wettability profiled polyester fiber.

[0111] The finally obtained spinning finish for high wettability profiled polyester fiber presents a yellow transparent state, with a conductivity of 1029 μS / cm, a wetting time of 5.77 s, and a surface tension of 26.9 mN / m.

[0112] The finally obtained profiled polyester fiber has a fiber specification of 135 dtex / 72 f, a fiber specific resistance of 5.3×10 7 Ω·cm, a fiber friction coefficient of 0.317, and an oil content of 0.6%.

[0113] Those skilled in the art should understand that the technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0114] The above embodiments only represent several implementation manners of this application. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of this application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several deformations and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of this application should be subject to the appended claims.

Claims

1. A spinning finish for profiled polyester fibers with high wettability, characterized in that, Containing 5-10 wt% of the main wetting and penetrating agent; the main wetting and penetrating agent is composed of the compounding of isocetyl polyoxyethylene polyoxypropylene ether and pentaerythritol oleate, and the mass ratio of isocetyl polyoxyethylene polyoxypropylene ether to pentaerythritol oleate is 2-2.5:0.5-1; the oil agent also contains 3-5 wt% of the wetting and penetrating auxiliary agent, and the wetting and penetrating auxiliary agent is coconut oil amide propyl hydroxysulfobetaine.

2. The high wettability profiled polyester fiber spinning finish agent according to claim 1, characterized in that, The oil agent also contains 55-65 wt% of the smoothing agent, and the smoothing agent is white oil.

3. The spinning finish for high wettability profiled polyester fiber according to claim 1, characterized in that, The oil agent also contains 5-10 wt% of the bundling agent, and the bundling agent is one or a combination of coconut oil diethanolamide and polyethylene glycol 400 oleate.

4. A high wettability profiled polyester fiber spinning finish according to claim 1, characterized in that, The oil agent also contains 15-20 wt% of the antistatic agent, and the antistatic agent is one or a combination of isocetyl phosphate ester salt and isocetyl polyoxyethylene ether sodium sulfate.

5. A high wettability profiled polyester fiber spinning finish according to claim 1, characterized in that, The oil agent also contains 2-5 wt% of the anti-coking agent, and the anti-coking agent is a fatty acid methyl ester ethoxylate double-capped surfactant.

6. A preparation method of a spinning finish for high wettability profiled polyester fiber, for preparing a spinning finish for high wettability profiled polyester fiber as described in any one of claims 1 to 5, characterized in that, Including the following steps: Sequentially add the smoothing agent, the bundling agent, the antistatic agent, the main wetting and penetrating agent, the anti-coking agent, and the wetting and penetrating auxiliary agent. Before adding each material, it is pre-equilibrated under the condition of 35°C - 45°C, and the feeding method of stirring while feeding is adopted to make each material fully mixed and uniform.

7. The preparation method of a high wettability profiled polyester fiber spinning finish according to claim 6, characterized in that, Control the temperature of the reaction kettle mixed with various materials at 35°C - 45°C, set the stirring speed at 600 - 800 r / min, and react for 1 - 2 h.