Environment-friendly DTY (Draw Textured Yarn) oiling agent for stranded yarns and production process thereof

Abstract

The invention discloses an environment-friendly DTY (Draw Textured Yarn) oiling agent for stranded yarns and a production process thereof, and belongs to the technical field of chemical fiber oiling agents. The invention relates to an environment-friendly DTY (Draw Textured Yarn) oil agent for stranded yarns and a production process thereof. The oil agent is prepared from plant-based synthetic ester, a polyether phosphate antistatic agent, a biodegradable emulsifier, a hindered phenol antioxidant, nano silicon dioxide particles and deionized water. The preparation method comprises the following steps: mixing, shearing and dispersing, ultrasonically emulsifying and filtering. The biodegradation rate is larger than or equal to 80%, the antistatic volume resistivity is 10-10 omegacm, the surface tension is smaller than or equal to 30 mN / m, the friction coefficient is smaller than or equal to 0.3, and the broken filament rate is reduced by 40% or above. The industrial pain points of large pollution, poor stability and high fiber damage of a traditional oiling agent are solved, and the method is suitable for green chemical fiber production.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of chemical fiber oiling agent, and particularly relates to an environmentally-friendly DTY oiling agent for ply yarn and a production process thereof. BACKGROUND

[0002] In the field of textile industry, DTY (draw textured yarn) oiling agent as a key additive in the process of fiber processing directly affects the weaving efficiency, product quality and subsequent application of the fiber. The current traditional DTY oiling agent has the following problems: insufficient environmental protection, a large amount of petroleum-based synthetic ester is used, low biodegradation rate, and easy to cause soil and water pollution after being discarded; limited antistatic performance, the antistatic effect of the traditional antistatic agent obviously decays under high humidity or long-term use, resulting in accumulation of static electricity in the process of fiber processing and affecting the production efficiency; poor emulsion stability, the emulsifier system is unreasonable, the oiling agent is prone to stratification in water, and the chemical stability is insufficient during storage, and the oiling agent is prone to deterioration when the acid value is high; lack of wear resistance: lack of effective wear-resistant components, and the surface of the ply yarn is prone to produce lint during weaving, reducing the product quality.

[0003] Therefore, developing a DTY oiling agent with excellent use performance and environmental friendliness has become an important link to promote the green transformation of the textile industry chain. SUMMARY

[0004] The application aims at the above-mentioned problems, and provides an environmentally-friendly DTY oiling agent for ply yarn, which is composed of plant-based synthetic ester, environmentally-friendly antistatic agent, biodegradable emulsifier, antioxidant, nano-silicon dioxide particles and deionized water, and a production process thereof prepared by mixing, shearing dispersion, ultrasonic emulsification and filtration.

[0005] The application scheme is as follows: An environmentally-friendly DTY oiling agent for ply yarn, characterized by comprising the following components in percentage by weight: plant-based synthetic ester 40-60%; environmentally-friendly antistatic agent 10-20%; biodegradable emulsifier 5-15%; antioxidant 1-3%; nano-silicon dioxide particles 0.5-1.5%; and the balance is deionized water.

[0006] Preferably, the plant-based synthetic ester is methyl oleate, and the environmentally-friendly antistatic agent is polyether phosphate ester.

[0007] Preferably, the biodegradable emulsifier is a compound of fatty alcohol polyoxyethylene ether and sorbitan ester polyoxyethylene ether, and the mass ratio of the compound is 1:1.

[0008] Preferably, the biodegradable emulsifier has a hydrophilic-lipophilic balance (HLB) of 10-14, ensuring that the oil agent has an emulsion stability in water of ≥95%.

[0009] Preferably, the plant-based synthetic ester has an acid value of ≤1.0 mgKOH / g, ensuring that the oil agent has good chemical stability during storage.

[0010] Preferably, the antioxidant is a hindered phenolic antioxidant.

[0011] 7. An environmentally friendly DTY oil agent for doubling yarn according to claim 1, characterized in that the nano-silica particles are used to enhance the wear resistance of the fiber surface, reducing the surface hairiness rate of the doubling yarn by more than 40%.

[0012] Preferably, the oil agent has a surface tension of ≤30 mN / m and an antistatic volume resistivity of 10 9 - 10 11 Ω·cm.

[0013] Preferably, the oil agent has a biodegradation rate of ≥80% and a friction coefficient of ≤0.3.

[0014] A production process for an environmentally friendly DTY oil agent for doubling yarn, characterized by the following steps: S1. Adding plant-based synthetic ester, environmentally friendly antistatic agent, biodegradable emulsifier, and hindered phenolic antioxidant to a reaction kettle, stirring and mixing at 50-60°C and 1000-1500 rpm for 30-60 minutes to ensure that the components are fully dispersed; S2. Adding 0.5-1.5% nano-silica particles to the mixture from step S1, high-speed shearing and dispersing at 1500-2000 rpm for 15-20 minutes to ensure uniform distribution of the nano-particles; then adding deionized water, heating to 60-70°C, and emulsifying at 300-500 W ultrasonic power for 40-80 minutes to form a stable emulsion; S3. Cooling the emulsified product to 25±5°C, filtering through a 0.22 μm microporous filter membrane to obtain the oil agent.

[0015] Compared with the prior art, the advantages of the present application are: (1) In the present application, plant-based synthetic ester is used as the main component, combined with biodegradable emulsifier, with a biodegradation rate of ≥80%, significantly reducing environmental pollution; environmentally friendly antistatic agent replaces traditional chemical reagents, reducing the risk of toxicity; the plant-based synthetic ester has an acid value of ≤1.0 mgKOH / g, with high chemical stability during storage; the biodegradable emulsifier has an HLB value of 10-14, ensuring that the oil agent has an emulsion stability in water of ≥95%, and does not separate during long-term storage; (2) In the present application, the surface tension is less than or equal to 30 mN / m, the antistatic volume resistivity is controlled to be 10 9 10 11 Omega cm, the friction coefficient is less than or equal to 0.3, and good wettability, antistatic property and low friction characteristics are combined, meeting the requirements of high-speed weaving process; (3) In the present application, 0.5-1.5% of nano-silicon dioxide particles are added, uniformly distributed through high-speed shearing dispersion process, so that the hairiness rate of the ply yarn is reduced by more than 40%, the wear resistance of the fiber is enhanced, and the product qualification rate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a production process flow diagram of an environmentally friendly DTY oil agent for ply yarn. DETAILED DESCRIPTION

[0017] The technical solutions of the embodiments of the present application will be explained and described below, but the following embodiments are only preferred embodiments of the present application, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor also belong to the protection scope of the present application.

[0018] Example 1: plant-based synthetic ester 60% formula 1. Formula weight ratio: Methyl oleate 60%; polyether phosphate 10%; 1:1 compound of fatty alcohol polyoxyethylene ether and sorbitan ester polyoxyethylene ether 10%; hindered phenolic antioxidant 1%; nano-silicon dioxide 1.0%; deionized water 18%.

[0019] 2. Production process: S1, put methyl oleate, polyether phosphate, fatty alcohol polyoxyethylene ether, sorbitan ester polyoxyethylene ether and hindered phenolic antioxidant into the reaction kettle, open the jacket heating system, control the temperature at 55±2℃ by circulating water, start the stirring device, continuously stir at 1200 rpm for 45 minutes, and make sure that the components are fully miscible. S2, add nano-silicon dioxide particles through the metering device, switch to high shear dispersion equipment, disperse at 1800 rpm for 15 minutes to make the nano-particles uniformly distributed; then add deionized water, raise the system temperature to 65±3℃, open the ultrasonic emulsification equipment, emulsify at 400W for 60 minutes to form a stable emulsion. S3, reduce the emulsion temperature to 25±5℃ through the cooling system, filter through a 0.22μm microporous filter membrane to obtain the finished product.

[0020] 3. Key performance indicators: Friction coefficient: 0.28; biodegradation rate: 82%; antistatic volume resistivity: 8×10 9Ω·cm; surface tension: 29 mN / m; emulsion stability: 96%; lint reduction: 45%.

[0021] Example 2: Plant-based synthetic ester 50% formulation 1. Formulation weight ratio: methyl oleate 50%; polyether phosphate 15%; emulsifier compound 12%; antioxidant 2%; nano-silica 1.0%; deionized water 20%.

[0022] 2. Production process: S1 : Put methyl oleate, polyether phosphate, emulsifier compound, antioxidant into the reaction kettle, control the temperature of the reaction kettle at 50°C, the stirring speed is 1000 rpm, and the stirring time is 60 minutes. S2: Pre-mix the nano-silica particles with a small amount of methyl oleate at a ratio of 1:2 for 10 minutes, and then add them into the reaction kettle system, and disperse them at a speed of 1500 rpm for 20 minutes; after adding deionized water, increase the temperature of the system to 60°C, and start the ultrasonic emulsification equipment to emulsify for 60 minutes, during which the emulsion uniformity is observed every 10 minutes S3, reduce the temperature of the emulsion to 25±5°C through the cooling system, filter through a 0.22 μm microporous filter membrane to obtain the finished product 3. Key performance indicators: Friction coefficient: 0.27; biodegradation rate: 83%; antistatic volume resistivity: 5 x 10 0 Ω·cm; surface tension: 28 mN / m; emulsion stability: 96%; lint reduction: 46%.

[0023] Example 3: Plant-based synthetic ester 40% formulation 1. Formulation weight ratio: methyl oleate 40%; polyether phosphate 20%; emulsifier compound 15%; antioxidant 3%; nano-silica 1.5%; deionized water 20.5%.

[0024] 2. Production process: S1 : Put methyl oleate, polyether phosphate, emulsifier compound, antioxidant into the reaction kettle, control the temperature of the reaction kettle at 50°C, the stirring speed is 1000 rpm, and the stirring time is 60 minutes. S2: Pre-mix the nano-silica particles with a small amount of methyl oleate at a ratio of 1:2 for 10 minutes, and then add them into the reaction kettle system, and disperse them at a speed of 1500 rpm for 20 minutes; after adding deionized water, increase the temperature of the system to 60°C, and start the ultrasonic emulsification equipment to emulsify for 60 minutes, during which the emulsion uniformity is observed every 10 minutes

[0025] S3, reduce the temperature of the emulsion to 25±5°C through the cooling system, filter through a 0.22 μm microporous filter membrane to obtain the finished product 3. Key performance indicators: Friction coefficient: 0.26; biodegradation rate: 81%; antistatic volume resistivity: 9 x 10 9 Ω·cm; surface tension: 27 mN / m; emulsion stability: 95%; lint reduction: 43%.

[0026] Example 4: antistatic agent 10% formulation 1. Formulation weight ratio: polyether phosphate ester 10%; the remaining components are the same as in Example 2.

[0027] 2. Production process: S1 : Put methyl oleate, polyether phosphate ester, emulsifier compound, antioxidant into the reaction kettle, control the temperature at 55°C, stirring speed 1200 rpm, extend the stirring time to 60 minutes to ensure uniform dispersion of low content antistatic agent. S2: After adding nano-silicon dioxide particles, switch to high shear dispersion equipment to disperse at 1800 rpm for 15 minutes; add deionized water, heat to 65°C, start the ultrasonic emulsification equipment to emulsify at a power of 300W for 80 minutes to compensate for the impact of reduced antistatic agent content on system stability S3, reduce the emulsion temperature to 25±5°C through the cooling system, filter through a 0.22 μm microporous filter membrane to obtain the finished product.

[0028] 3. Key performance indicators: friction coefficient: 0.29; biodegradation rate: 80%; antistatic volume resistivity: 9 x 10 9 Ω·cm; surface tension: 30 mN / m; emulsion stability: 95%; lint reduction: 42%.

[0029] Example 5: antistatic agent content 20% 1. Formulation weight ratio: polyether phosphate ester 20%, the remaining components are the same as in Example 3.

[0030] 2. Production process: S1 : Put methyl oleate, polyether phosphate ester, emulsifier compound, antioxidant into the reaction kettle, control the temperature at 55°C, stirring speed 1200 rpm, extend the stirring time to 60 minutes to ensure uniform dispersion of low content antistatic agent. S2: After adding nano-silicon dioxide particles, switch to high shear dispersion equipment to disperse at 1800 rpm for 15 minutes; add deionized water, heat to 65°C, start the ultrasonic emulsification equipment to emulsify at a power of 300W for 80 minutes to compensate for the impact of reduced antistatic agent content on system stability

[0031] S3, reduce the emulsion temperature to 25±5°C through the cooling system, filter through a 0.22 μm microporous filter membrane to obtain the finished product.

[0032] 3. Key performance indicators: friction coefficient: 0.29; biodegradation rate: 80%; antistatic volume resistivity: 9 x 10 9Ω·cm; surface tension: 26 mN / m; emulsion stability: 95%; lint reduction: 47%.

[0033] Example 6: Emulsifier 1:1 complex formula 1. Formula weight ratio: fatty alcohol polyoxyethylene ether 6%; sorbitan ester polyoxyethylene ether 6%; the rest of the components are the same as example 2.

[0034] 2. Production process: S1: Put methyl oleate, polyether phosphate, fatty alcohol polyoxyethylene ether, sorbitan ester polyoxyethylene ether and antioxidant into the reaction kettle, control the temperature at 55°C, stir at 1200 rpm for 45 minutes to promote the full dissolution of the emulsifier. S2: After adding nano silicon dioxide particles, shear dispersion at 1800 rpm for 18 minutes; add deionized water, heat to 65°C, ultrasonic emulsification at 400W power for 60 minutes to form a stable emulsion.

[0035] S3, the emulsion temperature is reduced to 25±5°C by cooling system, filtered through 0.22μm microporous filter membrane to get the finished product 3. Key performance indicators: friction coefficient: 0.27; biodegradation rate: 84%; antistatic volume resistivity: 6×10¹ 0 Ω·cm; surface tension: 28 mN / m; emulsion stability: 95%; lint reduction: 46%.

[0036] Example 7: Emulsifier 1:1 complex optimization formula 1. Formula weight ratio: fatty alcohol polyoxyethylene ether 6%; sorbitan ester polyoxyethylene ether 6%; the rest of the components are the same as example 2.

[0037] 2. Production process: S1: Put methyl oleate, polyether phosphate, fatty alcohol polyoxyethylene ether, sorbitan ester polyoxyethylene ether and antioxidant into the reaction kettle, first stir at 800 rpm for 15 minutes, then increase to 1200 rpm for 30 minutes to ensure uniform dispersion of the emulsifier. S2: After adding nano silicon dioxide particles, shear dispersion at 1800 rpm for 20 minutes; add deionized water, heat to 70°C, ultrasonic emulsification at 500W power for 40 minutes to improve emulsification efficiency S3, the emulsion temperature is reduced to 25±5°C by cooling system, filtered through 0.22μm microporous filter membrane to get the finished product.

[0038] 3. Key performance indicators: friction coefficient: 0.26; biodegradation rate: 85%; antistatic volume resistivity: 7×10¹ 0 Ω·cm; surface tension: 27 mN / m; emulsion stability: 96%; lint reduction: 48%.

[0039] Example 8: Nano-silica 0.5% formulation 1. Formulation weight percentage: nano-silica 0.5%; other components same as Example 4.

[0040] 2. Production process: S1: Put methyl oleate, polyether phosphate, emulsifier compound, antioxidant into the reaction kettle, start the jacket heating system, control the temperature at 55±2°C through circulating water, start the stirring device, continuously stir at 1200 rpm for 45 minutes to ensure that the components are fully miscible. S2: Add 0.5% nano-silica particles through the metering device, switch to high shear dispersion equipment, disperse at 1500 rpm for 20 minutes to make the nano-particles uniformly distributed; then add deionized water, raise the system temperature to 65±3°C, start the ultrasonic emulsification equipment, emulsify at 400W for 60 minutes to form a stable emulsion S3, reduce the emulsion temperature to 25±5°C through the cooling system, filter through a 0.22μm microporous filter membrane to obtain the finished product 3. Key performance indicators: friction coefficient: 0.29; biodegradation rate: 81%; antistatic volume resistivity: 8×10 9 Ω·cm; surface tension: 29mN / m; emulsion stability: 95%; yarn breakage rate reduction: 42%.

[0041] Example 9: Nano-silica 1.5% formulation 1. Formulation weight percentage: nano-silica 1.5%; other components same as Example 2.

[0042] 2. Production process: S1: Put methyl oleate, polyether phosphate, emulsifier compound, antioxidant into the reaction kettle, control the temperature at 55±2°C, stir at 1200 rpm for 45 minutes to ensure that the components are fully dispersed. S2: Pre-mix the nano-silica particles with methyl oleate at a ratio of 1:5 for 10 minutes, then put them into the reaction kettle and disperse at 2000 rpm for 15 minutes; add deionized water, raise the temperature to 65±3°C, ultrasonic emulsify at 400W for 80 minutes, pause the ultrasonic every 20 minutes and manually stir for 1 minute to prevent local overheating.

[0043] S3, reduce the emulsion temperature to 25±5°C through the cooling system, filter through a 0.22μm microporous filter membrane to obtain the finished product.

[0044] 3. Key performance indicators: friction coefficient: 0.24; biodegradation rate: 83%; antistatic volume resistivity: 5×10¹ 0 Ω·cm; surface tension: 28mN / m; emulsion stability: 95%; yarn breakage rate reduction: 48%.

[0045] Example 10: Ultrasonic 300W / 80min process 1. Formula weight ratio: same as Example 2.

[0046] 2. Production process: S1 : Put methyl oleate, polyether phosphate, emulsifier compound, antioxidant into the reaction kettle, control temperature 55±2℃, stir at 1200rpm for 45 minutes. S2: After adding nano-silicon dioxide particles, disperse at 1800rpm for 15 minutes; add deionized water, heat to 60℃, start ultrasonic emulsification equipment, emulsify at 300W power for 80 minutes, pause ultrasonic every 20 minutes during the period, manually stir for 1 minute to prevent local overheating S3, reduce the emulsion temperature to 25±5℃ through the cooling system, filter through 0.22μm microporous filter membrane to get the finished product 3. Key performance indicators: friction coefficient: 0.27; biodegradation rate: 83%; antistatic volume resistivity: 6x10¹ 0 Ω·cm; surface tension: 28mN / m; emulsion stability: 96%; lint rate reduction: 46%.

[0047] Example 11 : Ultrasonic 500W / 40min process 1. Formula weight ratio: same as Example 2.

[0048] 2. Production process: S1 : Put methyl oleate, polyether phosphate, emulsifier compound, antioxidant into the reaction kettle, control temperature 55±2℃, stir at 1200rpm for 45 minutes. S2: After adding nano-silicon dioxide particles, disperse at 1800rpm for 15 minutes; add deionized water, heat to 70℃, start ultrasonic emulsification equipment, emulsify at 500W power for 40 minutes, start the circulating cooling system at the same time to control the temperature not to exceed 75℃.

[0049] S3, reduce the emulsion temperature to 25±5℃ through the cooling system, filter through 0.22μm microporous filter membrane to get the finished product.

[0050] 3. Key performance indicators: friction coefficient: 0.28; biodegradation rate: 82%; antistatic volume resistivity: 7x10¹ 0 Ω·cm; surface tension: 29mN / m; emulsion stability: 95%; lint rate reduction: 45%.

[0051] Example 12: Full formula optimization combination 1. Formula weight ratio: methyl oleate 50%; polyether phosphate 15%; emulsifier compound 12%; antioxidant 2%; nano-silicon dioxide 1.0%; deionized water 20%.

[0052] 2. Production process: S1 : Put methyl oleate, polyether phosphate, emulsifier complex, antioxidant into the reaction kettle, keep constant temperature at 55°C, stir at 1200 rpm for 45 minutes to ensure that each component is fully dispersed. S2: Add nano-silicon dioxide particles, disperse at high speed of 1800 rpm for 18 minutes to make the nanoparticles uniformly distributed; add deionized water, heat to 65°C, ultrasonic emulsify at 400W power for 60 minutes to form a stable emulsion S3, reduce the emulsion temperature to 25±5°C through the cooling system, filter through a 0.22 μm microporous filter membrane to obtain the finished product.

[0053] 3. Key performance indicators: friction coefficient: 0.23; biodegradation rate: 86%; antistatic volume resistivity: 3 x 10¹ 0 Ω·cm; surface tension: 25 mN / m; emulsion stability: 96%; yarn breakage rate reduction: 50%.

[0054] Comparative Example 1: without adding nano-silicon dioxide 1. Formula weight ratio: omit nano-silicon dioxide particles, increase the ratio of deionized water to 21%, and the rest of the components are the same as Example 12.

[0055] 2. Production process: directly add deionized water in S2 stage, omit the step of adding nano-particles, and the rest of the process is consistent with Example 12.

[0056] 3. Key performance indicators: friction coefficient: 0.31; biodegradation rate: 86%; antistatic volume resistivity: 3 x 10¹ 0 Ω·cm; surface tension: 25 mN / m; emulsion stability: 96%; yarn breakage rate reduction: 18%.

[0057] Comparative Example 2: replaced with mineral oil-based synthetic ester 1. Formula weight ratio: replace methyl oleate with mineral oil-based synthetic ester, accounting for 50%, and the rest of the components remain unchanged.

[0058] 2. Production process: same as Example 12.

[0059] 3. Key performance indicators: friction coefficient: 0.29; biodegradation rate: 45%; antistatic volume resistivity: 4 x 10¹ 0 Ω·cm; surface tension: 28 mN / m; emulsion stability: 90%; yarn breakage rate reduction: 42%.

[0060] Comparative Example 3: replaced with traditional antistatic agent 1. Formula weight ratio: replace polyether phosphate with sodium alkyl benzene sulfonate, accounting for 15%, and the rest of the components remain unchanged.

[0061] 2. Production process: same as Example 12.

[0062] 3. Key performance indicators: coefficient of friction: 0.32; biodegradation rate: 58%; antistatic volume resistivity: 1.5 x 1012Ω-cm; surface tension: 31 mN / m; emulsion stability: 90%; lint reduction: 35%.

[0063] Comparative Example 4: No antioxidant added 1. Formulation weight percentage: omit antioxidant, increase deionized water to 22%, other components same as Example 12.

[0064] 2. Production process: same as Example 12.

[0065] 3. Key performance indicators: coefficient of friction: 0.28; biodegradation rate: 86%; antistatic volume resistivity: 3 x 1012Ω-cm; surface tension: 25 mN / m; emulsion stability: 96%; lint reduction: 50%. 0

[0066] Comparative Example 5: Emulsifier single component

[0067] 1. Formulation weight percentage: only use fatty alcohol polyoxyethylene ether, 12%, cancel compounding, other components remain unchanged.

[0068] 2. Production process: same as Example 12.

[0069] 3. Key performance indicators: coefficient of friction: 0.30; biodegradation rate: 86%; antistatic volume resistivity: 3 x 1012Ω-cm; surface tension: 25 mN / m; emulsion stability: 90%; lint reduction: 48%. 0

[0070] Comparative Example 6: Stirring temperature 40°C 1. Formulation weight percentage: same as Example 12.

[0071] 2. Production process: control the temperature at 40°C in S1 stage, stirring speed 1200 rpm, time 60 minutes.

[0072] 3. Key performance indicators: coefficient of friction: 0.29; biodegradation rate: 86%; antistatic volume resistivity: 3 x 1012Ω-cm; surface tension: 25 mN / m; emulsion stability: 92%; lint reduction: 47%. 0

[0073] Comparative Example 7: No ultrasonic emulsification process 1. Formulation weight percentage: same as Example 12.

[0074] ​​​2. Production process: S2 stage only mechanical stirring, speed 3000 rpm, emulsification time 60 minutes, no ultrasonic treatment.

[0075] 3. Key performance indicators: friction coefficient: 0.31; biodegradation rate: 86%; antistatic volume resistivity: 3 x 10¹ 0 Ω·cm; surface tension: 25 mN / m; emulsion stability: 82%; lint rate reduction: 40%.

[0076] Performance indicator comparison Group Friction coefficient Biodegradation rate Antistatic volume resistivity Surface tension (mN / m) Emulsion stability (3000 rpm / 30 min) Yarn breakage rate reduction Eligibility determination Industry requirements ≤0.3 ≥80% 10 9 - 10 11 Ω-cm ≤30 ≥95% ≥40% —— Test method ASTM D1894 ISO 14593 ASTM D257 Pendulum method Centrifugal method Microscopic counting method —— Example 1 0.28 82% 8 x 10 9 Ω·cm 29 96% 45% All qualified Example 2 0.27 83% 5 x 10 0 Ω·cm 28 96% 46% All qualified Example 3 0.26 81% 9 x 10 9 Ω·cm 27 95% 43% All qualified Example 4 0.29 80% 9 x 10 9 Ω·cm 30 95% 42% All qualified Example 5 0.25 80% 7 x 10 9 Ω·cm 26 95% 47% All qualified Example 6 0.27 84% 6 x 10 0 Ω·cm 28 95% 46% All qualified Example 7 0.26 85% 7 x 10 0 Ω·cm 27 96% 48% All qualified Example 8 0.29 81% 8 x 10 9 Ω·cm 29 95% 42% All qualified Example 9 0.24 83% 5 x 10 0 Ω·cm 28 95% 48% All qualified Example 10 0.27 83% 6 x 10 0 Ω·cm 28 96% 46% All qualified Example 11 0.28 82% <![CDATA[7×10¹ 0 Ohm cm]]> 29 95% 45% All qualified Example 12 0.23 86% 3 x 10 0 Ω·cm 25 96% 50% All qualified Comparative Example 1 0.31 86% 3 x 10 0 Ω·cm 25 96% 18% Unqualified (yarn breakage rate reduction 18% < 40%) Comparative Example 2 0.29 45% 4 x 10 0 Ω·cm 28 90% 42% Unqualified (biodegradation rate 45% < 80%, emulsion stability 90% < 95%) Comparative Example 3 0.32 58% 1.5 x 1012Ω·cm 31 90% 35% Unqualified (friction coefficient 0.32 > 0.3, biodegradation rate 58% < 80%, antistatic resistance 1.5 x 1012Ω·cm > 1011, surface tension 31 > 30, yarn breakage rate reduction 35% < 40%) Comparative Example 4 0.28 86% 3 x 10 0 Ω·cm 25 96% 50% Unqualified (acid value increased after storage, color turned yellow, chemical stability not up to standard) Comparative Example 5 0.30 86% 3 x 10 0 Ω·cm 25 90% 48% Unqualified (emulsion stability 90% < 95%) Comparative Example 6 0.29 86% 3 x 10 0 Ω·cm 25 92% 47% Unqualified (emulsion stability 92% < 95%) Comparative Example 7 0.31 86% 3 x 10 0 Ω·cm 25 82% 40% Unqualified (friction coefficient 0.31 > 0.3, emulsion stability 82% < 95%) Performance comparison summary 1. Performance analysis of examples: 1-1, Formula optimization effect: Example 1-3 adjusts the proportion of methyl oleate (40-60%), and verifies that the comprehensive performance is optimal at 50%; as in Example 2, the biodegradation rate is 83%, the friction coefficient is 0.27, and the antistatic volume resistivity is 5 x 10¹ 0 Ω·cm; Examples 4-9 verify that the optimal addition amount of polyether phosphate is 15% and nano-SiO2 is 1.0%, and among them, Example 12 combines the full formula to reduce the lint rate by 50%, which exceeds the industry standard by 10%.

[0077] 1-2, Process parameter influence: Example 7 compared with Example 2 shows that 400W / 60min ultrasonic emulsification can improve the emulsion stability to 96%, an increase of 1% over the conventional process; in Example 6, when the emulsifier is strictly compounded according to 1:1, the emulsion stability reaches 95%, while the stability of Comparative Example 6 decreases to 92% when the compounding ratio deviates, proving the necessity of 1:1 compounding.

[0078] 2. Defect verification: 2-1, Component absence influence: The absence of nano-SiO2 in Comparative Example 1 results in a lint rate reduction of only 18%, a decrease of 64% compared to Example 12, confirming the key role of nano-particles in wear resistance; after omitting the antioxidant in Comparative Example 4, the acid value increases from 0.9 mgKOH / g to 1.8 mgKOH / g during storage, and the chemical stability decreases significantly.

[0079] 2-2, Raw material and process defects: The use of mineral oil-based ester in Comparative Example 2 causes the biodegradation rate to drop to 45%, a decrease of 47% compared to Example 12, highlighting the environmental advantages of plant-based raw materials; Comparative Example 7 does not use ultrasonic emulsification, and the emulsion stability is only 82%, with nano-particle agglomeration reaching 1.8 μm, proving the decisive role of ultrasonic process in system uniformity.

[0080] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly DTY oil for twisted yarn, characterized in that: The invention comprises the following components in percentage by weight: Plant-based synthetic esters 40-60%; Environmentally friendly antistatic agent 10-20%; Biodegradable emulsifier 5-15%; Antioxidants 1-3%; Nano-silicon dioxide particles 0.5-1.5%; The balance was deionized water.

2. The environmentally friendly DTY oil for twisted yarn according to claim 1, characterized in that: The plant-based synthetic ester is methyl oleate, and the environmentally friendly antistatic agent is polyether phosphate.

3. The environmentally friendly DTY oil for twisted yarn according to claim 1, characterized in that: The biodegradable emulsifier is a compound of fatty alcohol polyoxyethylene ether and sorbitan ester polyoxyethylene ether, and the compounding mass ratio is 1:

1.

4. The environmentally friendly DTY oil for twisted yarn according to claim 3, characterized in that: The hydrophilic-lipophilic balance (HLB) value of the biodegradable emulsifier is 10-14, ensuring that the emulsification stability of the oil in water is ≥95%.

5. The environmentally friendly DTY oil for twisted yarn according to claim 3, characterized in that: The acid value of the plant-based synthetic ester is ≤1.0 mgKOH / g, ensuring that the oil has good chemical stability during storage.

6. The environmentally friendly DTY finish for twisted yarn according to claim 1, characterized in that: The antioxidant is a hindered phenol antioxidant.

7. The environmentally friendly DTY finish for twisted yarn according to claim 1, characterized in that: The nano-silicon dioxide particles are used to enhance the wear resistance of the fiber surface and reduce the surface hairiness of the twisted yarn by more than 40%.

8. The environmentally friendly DTY finish for twisted yarn according to claim 1, characterized in that: The surface tension of the oil is ≤30mN / m, and the antistatic volume resistivity is 10 9 -10¹¹Ω·cm.

9. The environmentally friendly DTY finish for twisted yarn according to claim 1, characterized in that: The biodegradation rate of the oil is ≥80%, and the friction coefficient is ≤0.

3.

10. A process for producing an environmentally friendly DTY finish for twisted yarn according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Add the plant-based synthetic ester, environmentally friendly antistatic agent, biodegradable emulsifier and hindered phenol antioxidant into a reactor, and stir and mix at 1000-1500 rpm for 30-60 minutes at 50-60°C to fully disperse the components; S2. Add 0.5-1.5% nano-silica particles to the mixture of step S1, and disperse at a high shear speed of 1500-2000 rpm for 15-20 minutes to ensure uniform distribution of the nanoparticles; then add deionized water, raise the temperature to 60-70°C, and emulsify at an ultrasonic power of 300-500 W for 40-80 minutes to form a stable emulsion; S3. Cool the emulsified product to 25±5° C. and filter through a 0.22 μm microporous filter membrane to obtain the oil solution.

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