A high-abrasion-resistant nano-particle composite polyester fiber spinning finish and its preparation method

Abstract

The present invention relates to a high-abrasion-resistant nano-particle composite polyester fiber spinning finish and a preparation method thereof. The finish of the present invention contains 3-7 wt% of an anti-wear agent composed of modified nano magnesium hydroxy silicate, polyoxypropylene ether stearate and polymethyl methacrylate; and contains 45-55 wt% of a leveling agent composed of pentaerythritol oleate and trimethylolpropane fatty acid ester. The preparation method of the finish: First, weigh each component by weight; then, sequentially add the leveling agent, emulsifier, penetrant, bundling agent, antistatic agent, anti-wear agent, and anti-coking agent; finally, react at a temperature of 40°C to 50°C and a stirring rate of 500-900 r / min for 1.5-3 h to obtain the high-abrasion-resistant nano-particle composite polyester fiber spinning finish. The finish described in the present invention has excellent abrasion resistance and smoothness, and the manufacturing process is simple. This finish can well meet the spinning process of nano-particle composite polyester fibers.

Description

Technical Field

[0001] The present invention belongs to the technical field of spinning finishes, and particularly relates to a high-abrasion-resistant nano-particle composite polyester fiber spinning finish and a preparation method thereof. Background Art

[0002] In the context of the rapid development of science and technology, nano-particle composite polyester fibers, as a new type of fiber with unique properties and versatility, play an extremely important role in the field of materials science. Nano-particle composite polyester fibers enhance fiber properties by adding different types of nano-particles. However, the addition of nano-particles may lead to irregular protrusions, particle aggregation, or other defects on the surface of the composite polyester fiber due to various factors such as poor dispersibility, irregular particle morphology, and surface energy changes during the processing. These factors together result in an increase in the surface roughness of the nano-composite polyester fiber, thereby increasing the static electricity generated by the fiber due to friction during the spinning process and affecting the smooth progress of spinning. Nano-particle composite polyester fibers pose greater challenges to the smoothness and abrasion resistance of spinning finishes. The existing spinning finishes cannot meet the spinning requirements of nano-particle composite fibers well in terms of abrasion resistance and smoothness, resulting in poor product quality of nano-particle composite polyester fibers.

[0003] The literature "Performance and Application Research of Special Oil Agent FM-115 for Bright Profiled Polyester FDY" (Synthetic Fiber Industry, 2024, 47(03): 42-46.) reported the special oil agents FM-115 and F1724 for bright profiled polyester FDY and compared the properties of the two oil agents. The oil film strengths of FM-115 and F1724 are 74 kg and 63 kg respectively; the 、 、 are 0.0311, 0.5721, and 0.4050 respectively. This literature uses mineral oil and fatty acid esters as smoothing agents, resulting in low oil film strength and poor abrasion resistance of the oil agent.

[0004] Patent CN118461184A discloses a mother material, an oil agent, and a preparation method of an anti-wicking DTY oil agent, and selects a mixture of propylene glycol methyl ether acetate and tall oil alkyd resin at a ratio of 1:2-4 as a film-forming aid to accelerate the formation speed of the oil film on the fiber surface, improve the oil film strength of the oil agent and the smoothness of the fiber. The friction coefficient of the fiber prepared by using this oil agent is about 0.427-0.437. However, propylene glycol methyl ether acetate and tall oil alkyd resin will generate a large amount of volatile organic compounds (VOCs) during use, posing potential hazards to the environment and health and not conforming to the concept of green environmental protection development.

[0005] In summary, the wear resistance and smoothness of the high-wear-resistance nano-particle composite polyester fiber spinning finish on the current market are difficult to meet the spinning requirements of nano-particle composite polyester fibers. Summary of the Invention

[0006] The purpose of the present invention is to provide a high-wear-resistance nano-particle composite polyester fiber spinning finish and its preparation method, which has excellent wear resistance and smoothness, preferably meets the spinning requirements of nano-particle composite polyester fibers, and the components of the finish are environmentally friendly and the preparation is simple.

[0007] To achieve the above purposes, the technical solutions adopted by the present invention are as follows:

[0008] A high-wear-resistance nano-particle composite polyester fiber spinning finish contains 3-7 wt% of an anti-wear agent; the anti-wear agent is composed of a compound of modified nano-hydroxy magnesium silicate, polyoxypropylene ether stearate, and polymethyl methacrylate, and the mass ratio of modified nano-hydroxy magnesium silicate, polyoxypropylene ether stearate, and polymethyl methacrylate is 1.5:2-3:1-2.

[0009] In some embodiments, the preparation method of the modified nano-hydroxy magnesium silicate is as follows:

[0010] S1. Preparation of nano-hydroxy magnesium silicate

[0011] First, 3-5 parts, 5-7 parts, and 3-5 parts of sodium hydroxide, magnesium chloride, and sodium silicate are respectively weighed and dissolved in 1-3 parts of distilled water; then, the solution is placed in a reaction kettle and reacted at a temperature of 200-250 °C for 6-8 h; finally, after the reaction is completed, the solution in the reaction kettle is filtered, washed, dried, and ground to obtain nano-hydroxy magnesium silicate powder;

[0012] S2. Modification of nano-hydroxy magnesium silicate

[0013] First, 4-6 parts of nano-hydroxy magnesium silicate powder are weighed and dissolved in 2-3 parts of trimethylchlorosilane, and stirred at a speed of 1500-1700 r / min for 40-60 min to make the solution react fully; then, 1-3 parts of sorbitan stearate and / or polyoxyethylene sorbitan monostearate are added to the reaction solution and continue to react for 20-40 min; finally, when it is cooled to room temperature, the modified nano-hydroxy magnesium silicate is obtained.

[0014] Nano magnesium hydroxy silicate itself is an anti-wear agent with excellent performance. Its anti-friction and anti-wear performance is achieved through physical actions such as adsorption, spreading, and filling on the rough fiber surface and through tribochemical reactions occurring on the rough fiber surface. The modified nano magnesium hydroxy silicate can better be compatible with other components in the oil agent formula, thereby improving the overall anti-wear property of the oil agent. Polyoxypropylene stearate can be used as an oil film strengthener. Polyoxypropylene stearate belongs to polyethers and is composed of very polar long-chain molecules. It can form an adsorption layer on the fiber surface. Adding it to the oil agent can enhance the oil film strength. Polymethyl methacrylate is a high molecular polymer with a chain structure. It can change the overall viscosity of the oil agent by changing its proportion in the oil agent, thereby achieving the purpose of changing the oil film strength of the oil agent. After the three are mixed, polymethyl methacrylate can promote the oil film strengthening effect of polyoxypropylene stearate, and the three have a synergistic effect, greatly increasing the oil film strength of the oil agent.

[0015] Furthermore, the high-abrasion-resistant nano-particle composite polyester fiber spinning oil agent contains 45 - 55 wt% of a smoothing agent. The smoothing agent is composed of a compound of pentaerythritol oleate and trimethylolpropane fatty acid ester, specifically pentaerythritol oleate and trimethylolpropane fatty acid ester in a ratio of 1 - 1.5:1 - 2.

[0016] Pentaerythritol oleate is a smoothing agent with excellent performance. Its molecule contains a relatively long oleic acid chain. These long-chain fatty acid groups can combine with each other through intermolecular forces such as van der Waals forces or hydrogen bonds to form a stable structure, endowing it with good lubrication characteristics. It can form a protective film on the fiber surface, effectively reducing friction on the fiber surface and providing good smoothness. In addition, the oleic acid groups in the molecule can effectively interact with other fat-soluble substances in the oil agent, while the hydrophilic part of pentaerythritol helps it to be compatible with the aqueous substances in the oil agent. This balance between lipophilicity and hydrophilicity makes pentaerythritol oleate have good dispersibility and lubricity in the spinning oil agent, further enhancing its smoothing effect.

[0017] Trimethylolpropane fatty acid ester has excellent chemical stability. It can form a uniform thin film on the fiber surface, making the fiber surface smoother, reducing the fiber surface roughness and the friction between fibers and between the fiber and the spinning component. In addition, trimethylolpropane fatty acid ester has a relatively low volatility, which can better avoid problems such as fiber wear due to the volatilization of the oil agent in a high-temperature environment. The combined action of pentaerythritol oleate and trimethylolpropane fatty acid ester can effectively reduce the fiber surface roughness and lower the frictional force between fibers and between the fiber and the spinning component, enabling the spinning to proceed smoothly and ensuring the product quality.

[0018] Due to the large surface roughness of the nano-particle composite polyester fiber, higher requirements are put forward for the smoothness and wear resistance of the spinning finish. In the present invention, an anti-wear agent is introduced into the spinning finish, and the relationship between the structure and performance of the smoothing agent in the finish is studied to enhance the oil film strength and smoothness of the spinning finish for nano-particle composite polyester fibers.

[0019] As a preferred technical solution:

[0020] For a spinning finish for high-wear-resistant nano-particle composite polyester fibers as described above, the finish also contains 15-25 wt% of an emulsifier, and the emulsifier is one or a combination of isotridecyl polyoxyethylene ether and sorbitan fatty acid ester.

[0021] For a spinning finish for high-wear-resistant nano-particle composite polyester fibers as described above, the finish also contains 3-6 wt% of a penetrant, and the penetrant is fatty alcohol polyoxyethylene ether JFC.

[0022] For a spinning finish for high-wear-resistant nano-particle composite polyester fibers as described above, the finish also contains 2-5 wt% of a bundling agent, and the bundling agent is one or a combination of coconut oil diethanolamide and triethanolamine oleate.

[0023] For a spinning finish for high-wear-resistant nano-particle composite polyester fibers as described above, the finish also contains 15-20 wt% of an antistatic agent, and the antistatic agent is potassium salt of fatty alcohol phosphate polyoxyethylene ether.

[0024] For a spinning finish for high-wear-resistant nano-particle composite polyester fibers as described above, the finish also contains 1-3 wt% of an anti-coking agent, and the anti-coking agent is a fatty acid methyl ester ethoxylate double-capped surfactant.

[0025] For a spinning finish for high-wear-resistant nano-particle composite polyester fibers as described above, during the spinning process, the spinning speed is 3700 m / min, the stretching temperature is 90 °C, and the setting temperature is 170 °C.

[0026] The present invention also provides a method for preparing a spinning finish for high-wear-resistant nano-particle composite polyester fibers as described in any one of the above, comprising the following steps:

[0027] S1. Weigh and prepare the required materials according to the actual usage requirements;

[0028] S2. Sequentially add a smoothing agent, an emulsifier, a penetrant, a bundling agent, an antistatic agent, an anti-wear agent, and an anti-coking agent, and fully mix the materials evenly;

[0029] S3. Control the temperature of the reaction kettle at 40 °C - 50 °C, set the stirring speed at 500 - 900 r / min, and react for 1.5 - 3 h to obtain a spinning finish for high-wear-resistant nano-particle composite polyester fibers.

[0030] Beneficial effects:

[0031] (1)The high-wear-resistant nano-particle composite polyester fiber spinning finish of the present invention has high wear resistance and smoothness, and can better meet the spinning requirements of nano-particle composite polyester fibers.

[0032] (2)An anti-wear agent is added to the finish of the present invention, and its composition is a mixture of modified nano-hydroxy magnesium silicate, polyoxypropylene ether stearate, and polymethyl methacrylate. The three act synergistically and promote each other, resulting in a significant increase in the oil film strength of the finish, effectively improving the wear resistance of the finish and ensuring product quality.

[0033] (3)The finish of the present invention uses a mixture of pentaerythritol oleate and trimethylolpropane fatty acid ester as a smoothing agent. The combined action of pentaerythritol oleate and trimethylolpropane fatty acid ester can quickly form a uniform oil film on the fiber surface, enhancing the smoothness of the fiber, effectively reducing the surface roughness of the fiber, reducing the friction between fibers and between the fiber and the spinning component, enabling smooth spinning, and ensuring product quality.

[0034] (4)The finish of the present invention enhances the oil film strength and smoothness of the nano-particle composite polyester fiber spinning finish by introducing an anti-wear agent and studying the relationship between the structure and properties of the smoothing agent in the finish. Detailed implementation manners

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0036] Conductivity (10% aqueous solution): Water is added to the finish prepared in each of the following examples, and the mass of water accounts for 10% of the total solution, measured according to GB / T 11007;

[0037] Oil film strength: Measured by a four-ball friction tester with reference to GB / T 3142-1982 "Method for Determining the Load-Carrying Capacity of Lubricants (Four-Ball Method)";

[0038] Surface tension (1% aqueous solution): Measured with a QBZY type platinum plate surface tension meter (QBZY-1 type, Shanghai Fangrui Instrument Co., Ltd.) at 25 °C;

[0039] Fiber specific resistance: Measured with an automatic digital fiber specific resistance meter according to GB / T14342-2015;

[0040] Fiber friction coefficient: Measured using the LFY-110 yarn dynamic friction tester (Model LFY-110, Shandong Textile Science Research Institute);

[0041] Oil content: Measured using a fiber oil rapid extractor (Model YG981, Changzhou Shuanggu Dunda Electromechanical Technology Co., Ltd.) according to the national standard GB / T6504-2008.

[0042] The following are the manufacturers and grades of the raw materials involved in the examples:

[0043] Sodium hydroxide: Manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., grade is 1310-73-2;

[0044] Magnesium chloride: Manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., grade is 7786-30-3;

[0045] Sodium silicate: Manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., grade is 1344-09-8;

[0046] Trimethylchlorosilane: Manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., grade is 75-77-4;

[0047] Sorbitan stearate: Manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., grade is 1338-41-6;

[0048] Polyoxyethylene sorbitan monostearate: Manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., grade is 1338-41-6;

[0049] Polyoxypropylene stearate: Manufacturer is Merck KGaA, Darmstadt, Germany, grade is 25231-21-4;

[0050] Polymethyl methacrylate: Manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., grade is 9011-14-7;

[0051] Pentaerythritol oleate: Manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., grade is 19321-40-5;

[0052] Trimethylolpropane fatty acid ester: Manufacturer is Shanghai Yucheng Chemical Co., Ltd.;

[0053] Isotridecyl polyoxyethylene ether: Manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., grade is 61827-42-7;

[0054] Sorbitan fatty acid ester: Manufacturer is Nantong Ningyuan New Materials Technology Co., Ltd.;

[0055] Alcohol polyoxyethylene ether JFC: Manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., grade is 68131-39-5;

[0056] Coconut oil diethanolamide: Manufacturer is Shanghai Macklin Biochemical Co., Ltd., and the product number is 6863-42-9;

[0057] Triethanolamine oleate: Manufacturer is Shanghai Macklin Biochemical Co., Ltd., and the product number is 2717-15-9;

[0058] Potassium salt of fatty alcohol polyoxyethylene phosphate: Manufacturer is Chemical Source Network, and the product number is 39322-78-6;

[0059] Double-ended surfactant of fatty acid methyl ester ethoxylate: Manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., and the product number is 65218-33-7;

[0060] Example 1: A preparation method of a high wear-resistant nanoparticle composite polyester fiber spinning oil agent, the specific steps are as follows:

[0061] (1) Preparation of raw materials;

[0062] Anti-wear agent: Modified nano-hydroxy magnesium silicate, polyoxypropylene ether stearate, polymethyl methacrylate;

[0063] Smoothing agent: Pentaerythritol oleate, trimethylolpropane fatty acid ester;

[0064] Emulsifier: Isotridecyl polyoxyethylene ether;

[0065] Penetrant: Fatty alcohol polyoxyethylene ether JFC;

[0066] Clustering agent: Coconut oil diethanolamide;

[0067] Antistatic agent: Potassium salt of fatty alcohol polyoxyethylene phosphate;

[0068] Anti-coking agent: Double-ended surfactant of fatty acid methyl ester ethoxylate.

[0069] (2) Preparation of anti-wear agent:

[0070] Configure modified nano-hydroxy magnesium silicate, polyoxypropylene ether stearate and polymethyl methacrylate with a mass ratio of 1.5:2.5:1.5 to obtain the anti-wear agent;

[0071] (3) Preparation of smoothing agent:

[0072] Configure pentaerythritol oleate and trimethylolpropane fatty acid ester with a mass ratio of 1:1.5 to obtain the smoothing agent;

[0073] (4) Weigh 4 wt% of anti-wear agent, 50 wt% of smoothing agent, 20 wt% of emulsifier, 4 wt% of penetrant, 4 wt% of bunching agent, 16 wt% of antistatic agent, and 2 wt% of anti-coking agent proportionally. Then add the smoothing agent, emulsifier, penetrant, bunching agent, antistatic agent, anti-wear agent, and anti-coking agent in sequence. Then react for 2 h at a temperature of 45 °C and a stirring speed of 700 r / min to obtain a spinning finish for highly wear-resistant nanoparticle composite polyester fiber.

[0074] The finally obtained spinning finish for highly wear-resistant nanoparticle composite polyester fiber presents a colorless and transparent state, with a conductivity of 1096 μS / cm, an oil film strength of 1048.6 N, and a surface tension of 33.54 mN / m.

[0075] The finally obtained nanoparticle composite polyester fiber has a fiber specification of 80 dtex / 48f, a fiber specific resistance of 5.4×10 7 Ω·cm, a fiber friction coefficient of 0.3359, and an oil content of 0.81%.

[0076] Comparative Example 1: A preparation method of a spinning finish for highly wear-resistant nanoparticle composite polyester fiber is basically the same as that in Example 1, except that the anti-wear agent consists only of modified nano-hydroxy magnesium silicate.

[0077] The finally obtained spinning finish for highly wear-resistant nanoparticle composite polyester fiber presents a colorless and transparent state, with a conductivity of 1025 μS / cm, an oil film strength of 980 N, and a surface tension of 32.89 mN / m.

[0078] The finally obtained nanoparticle composite polyester fiber has a fiber specification of 81 dtex / 48f, a fiber specific resistance of 6.3×10 7 Ω·cm, a fiber friction coefficient of 0.3275, and an oil content of 0.72%.

[0079] Comparative Example 2: A preparation method of a spinning finish for highly wear-resistant nanoparticle composite polyester fiber is basically the same as that in Example 1, except that the anti-wear agent consists only of polyoxypropylene ether stearate.

[0080] The finally obtained spinning finish for highly wear-resistant nanoparticle composite polyester fiber presents a colorless and transparent state, with a conductivity of 1039 μS / cm, an oil film strength of 980 N, and a surface tension of 34.27 mN / m.

[0081] The finally obtained nanoparticle composite polyester fiber has a fiber specification of 80 dtex / 48f, a fiber specific resistance of 6.1×10 7 Ω·cm, a fiber friction coefficient of 0.3521, and an oil content of 0.88%.

[0082] Comparative Example 3: A preparation method of a high-wear-resistant nanoparticle composite polyester fiber spinning finish, which is basically the same as Example 1, except that: the anti-wear agent consists only of polymethyl methacrylate.

[0083] The finally prepared high-wear-resistant nanoparticle composite polyester fiber spinning finish presents a colorless and transparent state, with a conductivity of 1041 μS / cm, an oil film strength of 1048.6 N, and a surface tension of 33.36 mN / m.

[0084] The finally prepared nanoparticle composite polyester fiber has a fiber specification of 80 dtex / 48f, a fiber specific resistance of 5.9×10 7 Ω·cm, a fiber friction coefficient of 0.3887, and an oil content of 0.79%.

[0085] Comparative Example 4: A preparation method of a high-wear-resistant nanoparticle composite polyester fiber spinning finish, which is basically the same as Example 1, except that: the leveling agent consists only of pentaerythritol oleate.

[0086] The finally prepared high-wear-resistant nanoparticle composite polyester fiber spinning finish presents a colorless and transparent state, with a conductivity of 981 μS / cm, an oil film strength of 980 N, and a surface tension of 33.89 mN / m.

[0087] The finally prepared nanoparticle composite polyester fiber has a fiber specification of 79 dtex / 48f, a fiber specific resistance of 9.1×10 7 Ω·cm, a fiber friction coefficient of 0.3961, and an oil content of 0.71%.

[0088] Comparative Example 5: A preparation method of a high-wear-resistant nanoparticle composite polyester fiber spinning finish, which is basically the same as Example 1, except that: the leveling agent consists only of trimethylolpropane fatty acid ester.

[0089] The finally prepared high-wear-resistant nanoparticle composite polyester fiber spinning finish presents a colorless and transparent state, with a conductivity of 1005 μS / cm, an oil film strength of 1048.6 N, and a surface tension of 33.36 mN / m.

[0090] The finally prepared nanoparticle composite polyester fiber has a fiber specification of 80 dtex / 48f, a fiber specific resistance of 8.2×10 7 Ω·cm, a fiber friction coefficient of 0.36912, and an oil content of 0.80%.

[0091] Example 2: A preparation method of a high-wear-resistant nanoparticle composite polyester fiber spinning finish, the specific steps are as follows:

[0092] (1) Preparation of raw materials;

[0093] Anti-wear agent: modified nano-hydroxy magnesium silicate, polyoxypropylene ether stearate, polymethyl methacrylate;

[0094] Smoothing agent: pentaerythritol oleate, trimethylolpropane fatty acid ester;

[0095] Emulsifier: isotridecyl polyoxyethylene ether;

[0096] Penetrant: fatty alcohol polyoxyethylene ether JFC;

[0097] Clustering agent: coconut oil diethanolamide;

[0098] Antistatic agent: potassium salt of fatty alcohol polyoxyethylene ether phosphate;

[0099] Anti-coking agent: fatty acid methyl ester ethoxylate double-capped surfactant.

[0100] (2) Preparation of anti-wear agent:

[0101] Mix modified nano-hydroxy magnesium silicate, polyoxypropylene ether stearate and polymethyl methacrylate in a mass ratio of 1.5:2:1 to obtain the anti-wear agent;

[0102] (3) Preparation of smoothing agent:

[0103] Mix pentaerythritol oleate and trimethylolpropane fatty acid ester in a mass ratio of 1.25:1 to obtain the smoothing agent;

[0104] (4) Weigh 3 wt% of the anti-wear agent, 45 wt% of the smoothing agent, 25 wt% of the emulsifier, 6 wt% of the penetrant, 5 wt% of the clustering agent, 15 wt% of the antistatic agent, and 1 wt% of the anti-coking agent in proportion, and then add the smoothing agent, emulsifier, penetrant, clustering agent, antistatic agent, anti-wear agent, and anti-coking agent in sequence; then react at a temperature of 40 °C and a stirring speed of 500 r / min for 1.5 h to obtain a high-wear-resistant nano-particle composite polyester fiber spinning oil agent.

[0105] The finally obtained high-wear-resistant nano-particle composite polyester fiber spinning oil agent is colorless and transparent, with a conductivity of 999 μS / cm, an oil film strength of 980 N, and a surface tension of 33.41 mN / m.

[0106] The finally obtained nano-particle composite polyester fiber has a fiber specification of 80 dtex / 48 f, a fiber specific resistance of 8.9×10 7 Ω.cm, a fiber friction coefficient of 0.3297, and an oil content of 0.79%.

[0107] Example 3: A preparation method of a high-wear-resistant nano-particle composite polyester fiber spinning oil agent, the specific steps are as follows:

[0108] (1)Preparation of raw materials;

[0109] Anti-wear agent: modified nano-hydroxy magnesium silicate, polyoxypropylene ether stearate, polymethyl methacrylate;

[0110] Smoothing agent: pentaerythritol oleate, trimethylolpropane fatty acid ester;

[0111] Emulsifier: sorbitan fatty acid ester;

[0112] Penetrant: fatty alcohol polyoxyethylene ether JFC;

[0113] Bundle agent: triethanolamine oleate salt;

[0114] Antistatic agent: potassium salt of polyoxyethylene ether fatty alcohol phosphate;

[0115] Anti-coking agent: fatty acid methyl ester ethoxylate double-capped surfactant.

[0116] (2)Preparation of anti-wear agent:

[0117] Mix modified nano-hydroxy magnesium silicate, polyoxypropylene ether stearate, and polymethyl methacrylate in a mass ratio of 1.5:2.25:2 to obtain the anti-wear agent;

[0118] (3)Preparation of smoothing agent:

[0119] Mix pentaerythritol oleate and trimethylolpropane fatty acid ester in a mass ratio of 1.5:2 to obtain the smoothing agent;

[0120] (4)Weigh 7 wt% of the anti-wear agent, 55 wt% of the smoothing agent, 15 wt% of the emulsifier, 3 wt% of the penetrant, 2 wt% of the bundle agent, 15 wt% of the antistatic agent, and 3 wt% of the anti-coking agent in proportion, and then add the smoothing agent, emulsifier, penetrant, bundle agent, antistatic agent, anti-wear agent, and anti-coking agent in sequence; then react at a temperature of 50 °C and a stirring speed of 900 r / min for 3 h to obtain a high-wear-resistant nano-particle composite polyester fiber spinning finish.

[0121] The finally prepared high-wear-resistant nano-particle composite polyester fiber spinning finish is colorless and transparent, with a conductivity of 1095 μS / cm, an oil film strength of 1048.6 N, and a surface tension of 32.79 mN / m.

[0122] The finally prepared nano-particle composite polyester fiber has a fiber specification of 80 dtex / 48f, a fiber specific resistance of 5.4×10 7 Ω·cm, a fiber friction coefficient of 0.3271, and an oil content of 0.81%.

[0123] Example 4: A preparation method of a high wear-resistant nano-particle composite polyester fiber spinning finish, the specific steps are as follows:

[0124] (1) Preparation of raw materials;

[0125] Anti-wear agent: modified nano-hydroxy magnesium silicate, polyoxypropylene ether stearate, polymethyl methacrylate;

[0126] Lubricant: pentaerythritol oleate, trimethylolpropane fatty acid ester;

[0127] Emulsifier: a mixture of isotridecyl polyoxyethylene ether and sorbitan fatty acid ester with a mass ratio of 1:1;

[0128] Penetrant: fatty alcohol polyoxyethylene ether JFC;

[0129] Binder: a mixture of coconut oil diethanolamide and triethanolamine oleate with a mass ratio of 2:1;

[0130] Antistatic agent: potassium salt of fatty alcohol phosphate polyoxyethylene ether;

[0131] Anti-coking agent: fatty acid methyl ester ethoxylate double-capped surfactant.

[0132] (2) Preparation of anti-wear agent:

[0133] Configure modified nano-hydroxy magnesium silicate, polyoxypropylene ether stearate and polymethyl methacrylate with a mass ratio of 1.5:1.75:1.75 to obtain the anti-wear agent;

[0134] (3) Preparation of lubricant:

[0135] Configure pentaerythritol oleate and trimethylolpropane fatty acid ester with a mass ratio of 1:1 to obtain the lubricant;

[0136] (4) Weigh 5 wt% of the anti-wear agent, 47 wt% of the lubricant, 16 wt% of the emulsifier, 5 wt% of the penetrant, 5 wt% of the binder, 20 wt% of the antistatic agent, and 2 wt% of the anti-coking agent in proportion, and then add the lubricant, emulsifier, penetrant, binder, antistatic agent, anti-wear agent, and anti-coking agent in sequence; then react at a temperature of 47 °C and a stirring speed of 850 r / min for 2.5 h to obtain the high wear-resistant nano-particle composite polyester fiber spinning finish.

[0137] The finally prepared high wear-resistant nano-particle composite polyester fiber spinning finish is colorless and transparent, with a conductivity of 1011 μS / cm, an oil film strength of 1048.6 N, and a surface tension of 33.62 mN / m.

[0138] The finally prepared nano-particle composite polyester fiber has a fiber specification of 80 dtex / 48 f, a fiber specific resistance of 7.4×10 7 Ω·cm, a fiber friction coefficient of 0.3296, and an oil content of 0.80%.

[0139] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A high-abrasion-resistant nano-particle composite polyester fiber spinning finish, characterized in that, Containing 3-7 wt% of anti-wear agent and 45-55 wt% of smoothing agent; the anti-wear agent is composed of a compound of modified nano-hydroxy magnesium silicate, polyoxypropylene ether stearate and polymethyl methacrylate, and the mass ratio of modified nano-hydroxy magnesium silicate, polyoxypropylene ether stearate and polymethyl methacrylate is 1.5:2-3:1-2; the smoothing agent is composed of a compound of pentaerythritol oleate and trimethylolpropane fatty acid ester, and the mass ratio of pentaerythritol oleate and trimethylolpropane fatty acid ester is 1-1.5:1-2.

2. The spinning finish for high wear-resistant nanoparticle composite polyester fiber according to claim 1, characterized in that, The preparation method of the modified nano-hydroxy magnesium silicate is as follows: S1. Preparation of nano-hydroxy magnesium silicate: First, weigh 3-5 parts, 5-7 parts and 3-5 parts of sodium hydroxide, magnesium chloride and sodium silicate respectively and dissolve them in 1-3 parts of distilled water; then, put the solution into a reaction kettle and react at a temperature of 200-250 °C for 6-8 h; finally, after the reaction is completed, filter, wash, dry and grind the solution in the reaction kettle to obtain nano-hydroxy magnesium silicate powder; S2. Modification of nano-hydroxy magnesium silicate: First, weigh 4-6 parts of nano-hydroxy magnesium silicate powder and dissolve it in 2-3 parts of trimethylchlorosilane, and stir at a speed of 1500-1700 r / min for 40-60 min to make the solution react fully; then, add 1-3 parts of sorbitan stearate and / or polyoxyethylene sorbitan monostearate to the reaction solution and continue to react for 20-40 min; finally, cool to room temperature to obtain the modified nano-hydroxy magnesium silicate.

3. The spinning finish for high wear-resistant nano-particle composite polyester fiber according to claim 2, characterized in that, In the step S1, the mixed solution after the reaction is washed 2-3 times with distilled water; in the step S1, the drying temperature of the filtered product is 80-120 °C.

4. The spinning finish for high wear-resistant nanoparticle composite polyester fiber according to claim 1, characterized in that, The high wear-resistant nano-particle composite polyester fiber spinning oil agent also contains 15-25 wt% of emulsifier, and the emulsifier is one or a combination of isodecyl polyoxyethylene ether and sorbitan fatty acid ester.

5. The spinning finish for high wear-resistant nanoparticle composite polyester fiber according to claim 1, characterized in that, The high wear-resistant nano-particle composite polyester fiber spinning oil agent also contains 3-6 wt% of penetrant, and the penetrant is fatty alcohol polyoxyethylene ether JFC.

6. The spinning finish for high wear-resistant nanoparticle composite polyester fiber according to claim 1, characterized in that The high wear-resistant nano-particle composite polyester fiber spinning oil agent also contains 2-5 wt% of bundling agent, and the bundling agent is one or a combination of coconut oil diethanolamide and triethanolamine oleate.

7. A high-abrasion-resistant nanoparticle composite polyester fiber spinning finish according to claim 1, characterized in that, The oil agent also contains 15-20 wt% of antistatic agent, and the antistatic agent is potassium salt of fatty alcohol phosphate polyoxyethylene ether.

8. A high-abrasion-resistant nanoparticle composite polyester fiber spinning finish according to claim 1, characterized in that, The oil agent also contains 15-20 wt% of anti-coking agent, and the anti-coking agent is a fatty acid methyl ester ethoxylate double-capped surfactant.

9. A preparation method of a high wear-resistant nano-particle composite polyester fiber spinning oil agent, characterized in that S1. Weigh and prepare the required materials according to the actual use requirements; S2. Add a smoothing agent, an emulsifier, a penetrant, a bunching agent, an antistatic agent, an antiwear agent, and an anti-coking agent into the reaction kettle in sequence, and fully mix and homogenize all the materials. The antiwear agent is composed of a compound of modified nano-hydroxy magnesium silicate, polyoxypropylene ether stearate, and polymethyl methacrylate. The mass ratio of modified nano-hydroxy magnesium silicate, polyoxypropylene ether stearate, and polymethyl methacrylate is 1.5:2-3:1-2. The smoothing agent is composed of a compound of pentaerythritol oleate and trimethylolpropane fatty acid ester. The mass ratio of pentaerythritol oleate and trimethylolpropane fatty acid ester is 1-1.5:1-2. S3. Control the temperature of the reaction kettle at 40°C-50°C, set the stirring speed at 500-900 r / min, and react for 1.5-3 h.