Environment-friendly anti-seepage DTY oiling agent and preparation method thereof

Abstract

The invention discloses an environment-friendly anti-seepage DTY (Draw Textured Yarn) oil agent and a preparation method thereof, and belongs to the technical field of chemical fiber processing aids. The environment-friendly seepage-proof DTY oiling agent comprises the following components in parts by weight: 10-15 parts of vegetable fat, 3-8 parts of nanoparticles, 5-10 parts of linear-chain fatty alcohol-polyoxyethylene ether, 5-10 parts of branched-chain fatty alcohol-polyoxyethylene ether, 1-2 parts of a film-forming agent, 2-5 parts of an anti-splashing agent and the balance of water. Wherein the vegetable fat is castor oil and the like, the nanoparticles are zinc oxide with the particle size of 50-100 nm and the like, the film-forming agent Tg is-20 DEG C to 0 DEG C, and the anti-splashing agent is a compound of sodium dioctyl sulfosuccinate and low-carbon alcohol; during preparation, water is heated to 40-50 DEG C, all the components are sequentially added, ultrasonic dispersion and stirring emulsification are performed, the residual oil rate of the oil agent is smaller than or equal to 0.3% after the oil agent is aged for 7 days at 60 DEG C, and the contact angle of a film layer to water is larger than or equal to 90 degrees. The method has the advantages of environmental protection, seepage prevention, high-temperature stability and the like, and is suitable for production of polyester draw-textured yarns.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical fiber processing aids, and particularly relates to an environmentally friendly and anti-seepage DTY oil agent and a preparation method thereof. Background Art

[0002] In the textile industry, the oils used in the production of DTY (polyester draw textured yarn) are crucial to the fiber's processing performance, product quality, and subsequent applications. The development of environmentally friendly anti-seepage oils aligns with the global trend toward green textile development. They can reduce chemical pollutant emissions, alleviate the burden on industrial wastewater treatment, and improve fiber performance stability in humid environments, thus playing a significant role in promoting the sustainable development of the textile industry. However, traditional DTY oils, primarily based on petroleum-based compounds, present several challenges: environmental shortcomings. Traditional oils often contain toxic ingredients such as aromatic solvents and heavy metal compounds, which can pollute the environment and harm the health of operators during production and use. Their anti-seepage properties are insufficient, with the membrane's low contact angle with water (typically <90°), making it susceptible to water penetration in humid environments, rendering the oil ineffective and affecting fiber performance stability. Their high residual oil content, typically exceeding 0.5% after high-temperature aging, not only wastes resources but can also leave harmful residues on the fiber surface, compromising subsequent processing. Furthermore, their preparation processes are limited. Traditional methods often rely on mechanical stirring, resulting in uneven dispersion of nanoparticles and significant performance fluctuations, making them difficult to meet the demands of high-end textiles.

[0003] With increasingly stringent environmental regulations and increasing market demand for high-performance fibers, the development of DTY oils that are both environmentally friendly and have excellent anti-seepage properties has become an urgent need in the industry. Summary of the Invention

[0004] In response to the above pain points, the present invention provides an environmentally friendly anti-seepage DTY oil agent and a preparation method thereof, which is prepared using plant oils, nanoparticles, linear and branched fatty alcohol polyoxyethylene ethers, film-forming agents, anti-splash agents and water as raw materials through specific temperature control, ultrasonic dispersion and stirring processes. The oil agent has excellent anti-seepage properties, environmental protection and processing adaptability.

[0005] The scheme of the present invention is as follows: An environmentally friendly and anti-seepage DTY oil agent is characterized by comprising the following components, by weight: 10-15 parts of vegetable oil, 3-8 parts of nanoparticles, 5-10 parts of linear fatty alcohol polyoxyethylene ether, 5-10 parts of branched fatty alcohol polyoxyethylene ether, 1-2 parts of film-forming agent, 2-5 parts of anti-splashing agent, and the balance being water.

[0006] Preferably, the vegetable oil is at least one of castor oil, soybean oil or rapeseed oil.

[0007] Preferably, the nanoparticles are nano zinc oxide or antimony sulfide with a particle size of 50-100 nm.

[0008] Preferably, the number of oxyethylene groups in the linear fatty alcohol polyoxyethylene ether is 7-9.

[0009] Preferably, the number of oxyethylene groups in the branched fatty alcohol polyoxyethylene ether is 5-7.

[0010] Preferably, the film-forming agent is an acrylic polymer having a glass transition temperature (Tg) of -20°C to 0°C.

[0011] Preferably, the anti-splash agent is a compound of sodium salt of dioctyl sulfosuccinate and a low-carbon alcohol, and the weight ratio of the two is 1:1-1:3; the low-carbon alcohol is selected from at least one of isopropanol, n-butanol, and isobutanol.

[0012] Preferably, the residual oil rate of the DTY oil after aging at 60° C. for 7 days is ≤0.3%.

[0013] Preferably, the contact angle of the film layer formed by the DTY oil to deionized water at 25°C is ≥90°.

[0014] A method for preparing an environmentally friendly and anti-seepage DTY oil agent, characterized by comprising the following steps: S1. Add water to a mixing container and heat it to 40-50°C; S2, adding vegetable oil and nanoparticles in sequence, and using ultrasonic dispersion for 4 hours to fully disperse them; S3, add linear fatty alcohol polyoxyethylene ether and branched fatty alcohol polyoxyethylene ether, and continue stirring until emulsified; S4. Add a film-forming agent and an anti-splashing agent, stir and mix at a speed of 300-500 rpm for 1-2 hours, and cool to obtain the DTY oil.

[0015] Compared with the prior art, the advantages of the present invention are: (1) In the present invention, plant oils are used to replace traditional petroleum-based raw materials, which have a high biodegradability rate and reduce the emission of toxic substances; they do not contain harmful heavy metals and aromatic solvents, comply with environmental protection regulations, and are suitable for green textile production; (2) In the present invention, nano zinc oxide or antimony sulfide with a particle size of 50-100 nm is added. Through the surface effect and filling effect of the nanoparticles, the film layer formed by the oil agent has a contact angle of ≥90° with deionized water at 25°C, effectively blocking water penetration; the residual oil rate is ≤0.3% after aging at 60°C for 7 days, with strong high temperature stability, reducing oil loss; (3) The film-forming agent is an acrylic polymer with a glass transition temperature (Tg) of -20°C to 0°C, which makes the film layer have both flexibility and mechanical strength, firmly adheres to the fiber surface and is not easy to break; the linear and branched fatty alcohol polyoxyethylene ether are compounded to have excellent emulsification effect, ensuring that the oil is evenly distributed on the fiber surface, improving the lubricity and antistatic properties of the spinning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a flow chart of an environmentally friendly and anti-seepage DTY oil agent and its preparation method. DETAILED DESCRIPTION

[0017] The technical solutions of the embodiments of the present invention will be explained and described below, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0018] Example 1: Verification of conventional group allocation ratio 1. Raw materials dosage by weight: 12.5 parts of castor oil: food grade, iodine value 82 to 88gI2 / 100g, acid value ≤2.0mgKOH / g; 5.5 parts of nano zinc oxide: particle size 50-100nm, specific surface area 60-80m² / g, purity ≥99.5%; 7.5 parts of linear fatty alcohol polyoxyethylene ether: 8 oxyethylene groups, HLB value 12-14, average molecular weight 500-600; 7.5 parts of branched fatty alcohol polyoxyethylene ether: number of oxyethylene groups: 6, HLB value: 10-12, average molecular weight: 400-500; 1.5 parts of acrylic film-forming agent: Tg = -10°C, solid content 50%, copolymerization of methyl methacrylate and butyl acrylate; 3.5 parts of anti-splash agent: sodium salt of dioctyl sulfosuccinate and isopropyl alcohol in a weight ratio of 1:2; Deionized water balance.

[0019] 2. Preparation method: S1. Add deionized water to a 2 L stainless steel jacketed reactor, heat to 45 ± 2 °C with electric heating, and stir at 100 rpm. S2. Add castor oil and nano zinc oxide in sequence, start the ultrasonic disperser (300W, 40kHz) and disperse for 4 hours. The jacket cooling water temperature is controlled at ≤50℃. S3. Add linear and branched fatty alcohol polyoxyethylene ether, increase the stirring speed to 400 rpm, and emulsify for 30 minutes until the mixture becomes homogeneous and transparent; S4. Add film-forming agent and anti-splashing agent, stir at 400 rpm for 1.5 hours, cool the jacket to 25±2°C, and filter through a 100-mesh filter.

[0020] 3. Key performance indicators: residual oil rate: 0.25%; contact angle: 95°; biodegradation rate: 68%; anti-splash capacity: 0.35g / hour; dispersion: 96%.

[0021] Example 2: Verification of group allocation ratio boundary value 1. Raw materials dosage by weight: 10 parts soybean oil: first-stage pressing, acid value ≤ 0.5mgKOH / g, peroxide value ≤ 5.0meq / kg; 3 parts of nano-antimony sulfide: particle size 50-100nm, purity ≥99%, needle-shaped crystals; 5 parts of linear fatty alcohol polyoxyethylene ether: number of oxyethylene groups: 7, HLB value: 11-13; 5 parts of branched fatty alcohol polyoxyethylene ether: number of oxyethylene groups: 5, HLB value: 8-10; 1 part of acrylic film-forming agent: Tg = -20°C, DSC measurement heating rate 10°C / min; 2 parts of anti-splash agent: sodium salt of dioctyl sulfosuccinate and n-butanol in a ratio of 1:1; Deionized water balance.

[0022] 2. Preparation method: S1. Heat deionized water in a water bath to 40±1°C, with a temperature fluctuation of ≤0.5°C; S2, ultrasonic disperser power 250W, probe diameter 10mm, insertion depth 3cm, dispersion for 4 hours; S3, stirring and emulsifying at 300 rpm for 20 minutes, with the diameter of the four-blade straight paddle being 1 / 3 of the inner diameter of the kettle; S4. Cool to below 45°C before adding the film-forming agent and stir at 300 rpm for 1 hour.

[0023] 3. Key performance indicators: residual oil rate: 0.28%; contact angle: 92°; biodegradation rate: 65%; anti-splash capacity: 0.40g / hour; dispersion: 94%.

[0024] Example 3: Comparison of vegetable oils and fats Group A: Castor Oil System 1. Raw materials used by weight: 15 parts of castor oil, and the rest are the same as in Example 1.

[0025] 2. Preparation method: same as Example 1.

[0026] 3. Key performance indicators: residual oil rate: 0.26%; contact angle: 94°; biodegradation rate: 70%; anti-splash capacity: 0.38g / hour; dispersion: 95%.

[0027] Group B: Soybean Oil System 1. Raw materials used by weight: 15 parts of soybean oil, and the rest are the same as in Example 1.

[0028] 2. Preparation method: same as Example 1.

[0029] 3. Key performance indicators: residual oil rate: 0.27%; contact angle: 93°; biodegradation rate: 67%; anti-splash capacity: 0.39g / hour; dispersion: 95%.

[0030] Group C: Rapeseed oil system 1. Raw material dosage by weight: 15 parts of rapeseed oil, and the rest are the same as in Example 1.

[0031] 2. Preparation method: same as Example 1.

[0032] 3. Key performance indicators: residual oil rate: 0.26%; contact angle: 94°; biodegradation rate: 66%; anti-splash capacity: 0.37g / hour; dispersion: 95%.

[0033] Example 4: Comparison of Nanoparticle Types Group A: Nano zinc oxide system 1. Raw material dosage by weight: 8 parts of nano zinc oxide, and the rest is the same as in Example 1.

[0034] 2. Preparation method: same as Example 1.

[0035] 3. Key performance indicators: Residual oil rate: 0.24%; Contact angle: 96°; Biodegradation rate: 68%; Anti-splash capacity: 0.34g / hour; Dispersion: 96%.

[0036] Group B: Nano-antimony sulfide system 1. Raw material dosage by weight: 8 parts of nano antimony sulfide, and the rest is the same as in Example 1.

[0037] 2. Preparation method: Same as Example 1, except that the nano-antimony sulfide was ultrasonically cleaned with ethanol three times for 10 minutes each time before use to remove surface impurities.

[0038] 3. Key performance indicators: residual oil rate: 0.25%; contact angle: 95°; biodegradation rate: 68%; anti-splash capacity: 0.35g / hour; dispersion: 95%.

[0039] Example 5: Verification of Tg value of film-forming agent Group A: Tg = -20℃ 1. Raw material dosage by weight: 1.5 parts of film-forming agent (Tg = -20°C), and the rest is the same as in Example 1.

[0040] 2. Preparation method: Same as Example 1, except that the film-forming agent is methyl methacrylate: butyl acrylate = 3:7 molar ratio polymerization. 3. Key performance indicators: residual oil rate: 0.25%; contact angle: 95°; biodegradation rate: 68%; anti-splash capacity: 0.36g / hour; dispersion: 96%.

[0041] Group B: Tg = -10℃ 1. Raw material dosage by weight: 1.5 parts of film-forming agent (Tg = -10°C), and the rest is the same as in Example 1.

[0042] 2. Preparation method: Same as Example 1, except that the film-forming agent is methyl methacrylate: butyl acrylate = 5:5 molar ratio polymerization.

[0043] 3. Key performance indicators: residual oil rate: 0.24%; contact angle: 96°; biodegradation rate: 68%; anti-splash capacity: 0.35g / hour; dispersion: 96%.

[0044] Group C: Tg = 0°C 1. Raw material dosage by weight: 1.5 parts of film-forming agent (Tg = 0°C), and the rest is the same as in Example 1.

[0045] 2. Preparation method: Same as Example 1, except that the film-forming agent is methyl methacrylate:butyl acrylate = 7:3 molar ratio polymerization.

[0046] 3. Key performance indicators: residual oil rate: 0.26%; contact angle: 94°; biodegradation rate: 68%; anti-splash capacity: 0.37g / hour; dispersion: 95%.

[0047] When Tg=0℃, the film layer still meets the core indicators of contact angle ≥90° and residual oil rate ≤0.3%, proving that the upper limit of Tg (0℃) in claim 6 is feasible.

[0048] Example 6: Verification of the anti-splash agent compounding ratio Group A: 1:1 compound 1. Amount of raw materials by weight: 5 parts of anti-splash agent (sodium salt of dioctyl sulfosuccinate: isobutanol = 1:1), and the rest are the same as in Example 1.

[0049] 2. Preparation method: Same as Example 1, stirring in a 40°C water bath for 30 minutes.

[0050] 3. Key performance indicators: residual oil rate: 0.25%; contact angle: 95°; biodegradation rate: 68%; anti-splash capacity: 0.32g / hour; dispersion: 96%.

[0051] Group B: 1:2 compound 1. Amount of raw materials by weight: 5 parts of anti-splash agent (sodium salt of dioctyl sulfosuccinate: isobutanol = 1:2), and the rest is the same as Example 1.

[0052] 2. Preparation method: Same as Example 1, add isobutanol first and then add sodium salt.

[0053] 3. Key performance indicators: residual oil rate: 0.24%; contact angle: 96°; biodegradation rate: 68%; anti-splash capacity: 0.30g / hour; dispersion: 96%.

[0054] Group C: 1:3 compound 1. Amount of raw materials by weight: 5 parts of anti-splash agent (sodium salt of dioctyl sulfosuccinate: isobutanol = 1:3), and the rest are the same as in Example 1.

[0055] 2. Preparation method: Same as Example 1, after compounding, cool to 25℃ and add.

[0056] 3. Key performance indicators: residual oil rate: 0.25%; contact angle: 95°; biodegradation rate: 68%; anti-splash capacity: 0.31g / hour; dispersion: 96%.

[0057] Example 7: Verification of the anti-splash agent compounding ratio 1. Raw material dosage by weight 2. Preparation method: S2, ultrasonic power 350W, frequency 45kHz, probe diameter 15mm, insertion depth 8cm, dispersion for 4 hours, pause for 5 minutes every hour; S4: stirring speed 500 rpm, six-blade turbine, stirring for 2 hours, nitrogen flow (flow rate 5 L / min).

[0058] 3. Key performance indicators: residual oil rate: 0.23%; contact angle: 97°; biodegradation rate: 68%; anti-splash capacity: 0.30g / hour; dispersion: 97%.

[0059] Comparative Example 1: No nanoparticles added 1. Raw materials used by weight: 12.5 parts of castor oil, 7.5 parts of linear and branched fatty alcohol polyoxyethylene ether, 1.5 parts of film-forming agent, 3.5 parts of anti-splashing agent, and the balance of deionized water. No nanoparticles.

[0060] 2. Preparation method: In the S2 stage, only castor oil is added, and after stirring for 5 minutes, the mixture enters the S3 stage without ultrasonic dispersion.

[0061] 3. Key performance indicators: residual oil rate: 0.45%; contact angle: 85°; biodegradation rate: 68%; anti-splash capacity: 0.65g / hour; dispersion: 80%.

[0062] Comparative Example 2: Petroleum-based grease replacement 1. Raw materials used by weight: 12.5 parts of mineral oil (kinematic viscosity at 40°C 15-20 mm² / s, aromatic hydrocarbons ≤5%), and the rest are the same as in Example 1.

[0063] 2. Preparation method: same as Example 1.

[0064] 3. Key performance indicators: residual oil rate: 0.25%; contact angle: 95°; biodegradation rate: 32%; anti-splash capacity: 0.35g / hour; dispersion: 96%.

[0065] Comparative Example 3: Excessive dosage of nanoparticles 1. Raw material dosage by weight: 2 parts of nano zinc oxide, and the rest is the same as Example 1.

[0066] 2. Preparation method: same as Example 1.

[0067] 3. Key performance indicators: residual oil rate: 0.35%; contact angle: 88°; biodegradation rate: 68%; anti-splash capacity: 0.45g / hour; dispersion: 85%.

[0068] Comparative Example 4: Film-forming agent Tg exceeds limit 1. Amount of raw materials by weight: 1.5 parts of film-forming agent (Tg = 10°C, methyl methacrylate: butyl acrylate = 8:2), and the rest is the same as in Example 1.

[0069] 2. Preparation method: same as Example 1.

[0070] 3. Key performance indicators: residual oil rate: 0.26%; contact angle: 94°; biodegradation rate: 68%; anti-splash capacity: 0.52g / hour; dispersion: 95%.

[0071] Comparative Example 5: The proportion of anti-splash agent exceeds the limit 1. Amount of raw materials by weight: 3.5 parts of anti-splash agent (sodium salt of dioctyl sulfosuccinate: isopropyl alcohol = 1:0.5), and the rest is the same as in Example 1.

[0072] 2. Preparation method: same as Example 1.

[0073] 3. Key performance indicators: residual oil rate: 0.25%; contact angle: 95°; biodegradation rate: 68%; anti-splash capacity: 0.70g / hour; dispersion: 96%.

[0074] Comparative Example 6: No ultrasonic dispersion 1. Raw material dosage by weight: same as in Example 1.

[0075] 2. Preparation method: In the S2 stage, only mechanical stirring (400 rpm) was used for 4 h without ultrasonication.

[0076] 3. Key performance indicators: residual oil rate: 0.30%; contact angle: 90°; biodegradation rate: 68%; anti-splash capacity: 0.35g / hour; dispersion: 82%.

[0077] Comparative Example 7: Traditional DTY oil formulation 1. Raw materials by weight: 15 parts mineral oil, 10 parts linear fatty alcohol polyoxyethylene ether, 5 parts toluene, 2 parts antistatic agent, and the balance deionized water.

[0078] 2. Preparation method: Use a batch stirred tank to first mix the mineral oil, surfactant, and toluene evenly, and then slowly add deionized water for emulsification; the stirring speed is 200 rpm, and the emulsification time is 1 hour. No ultrasonic dispersion is required.

[0079] 3. Key performance indicators: residual oil rate: 0.80%; contact angle: 75°; biodegradation rate: 25%; anti-splash capacity: 1.20g / hour.

[0080] Performance test comparison Performance test comparison summary: 1. All examples met the core indicators of a residual oil rate ≤ 0.3% and a contact angle ≥ 90°. In Example 7, the residual oil rate was reduced to 0.23% and the contact angle was increased to 97° through process optimization, demonstrating that the coordinated optimization of the component ratio and preparation process can further enhance performance. The types of plant oils and fats: castor oil, soybean oil, and rapeseed oil, had a significant impact on the biodegradation rate, reaching 66-70%, which is within the indicator range. Nano-zinc oxide and antimony sulfide had similar anti-seepage effects, with zinc oxide being superior in controlling the residual oil rate, reaching 0.24%. The film-forming agent achieved optimal overall performance when its Tg was -10°C, and the anti-splashing agent produced the lowest splashing, reaching 0.30g / hour, when formulated in a 1:2 ratio. This validates the scientific nature of the parameter ranges in the claims.

[0081] 2. Comparative Examples 1-7 show that: in Comparative Example 1, the contact angle decreased by 10° and the residual oil rate exceeded the standard by 50% due to the lack of nanoparticles, proving that nanoparticles are necessary components for constructing a hydrophobic film layer; Comparative Example 2 used petroleum-based oil instead, which halved the biodegradation rate to 32%, highlighting the environmental advantages of plant oils; Comparative Example 3 had insufficient nanoparticle dosage and Comparative Example 4 had excessive Tg of the film-forming agent, both of which resulted in at least one performance failing to meet the standard, confirming the necessity of defining key parameters in the claims; Comparative Example 7 used traditional oils, and all indicators deteriorated comprehensively, with a residual oil rate of 0.80%, a contact angle of only 75°, and a biodegradation rate of 25%, which was significantly different from the technology of the present invention.

[0082] 3. By combining plant oils and nanoparticles, the present invention achieves a dual breakthrough of a biodegradation rate of ≥65% and a contact angle of ≥90°, increasing the biodegradation rate by 172% and the contact angle by 20° compared to traditional oils. The ultrasonic dispersion process ensures a nanoparticle dispersion of ≥94%, and the optimization of the anti-splash agent reduces spinning losses by 40%. This method combines environmental protection, impermeability, and processing adaptability, providing a green and efficient solution for DTY fiber processing.

[0083] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly and anti-seepage DTY oil, characterized in that: The invention comprises the following components by weight: 10-15 parts of vegetable oil, 3-8 parts of nanoparticles, 5-10 parts of linear fatty alcohol polyoxyethylene ether, 5-10 parts of branched fatty alcohol polyoxyethylene ether, 1-2 parts of film-forming agent, 2-5 parts of anti-splashing agent and the balance is water.

2. The environmentally friendly and anti-seepage DTY oil according to claim 1, characterized in that: The vegetable oil is at least one of castor oil, soybean oil or rapeseed oil.

3. The environmentally friendly and anti-seepage DTY oil according to claim 1, characterized in that: The nanoparticles are nano zinc oxide or antimony sulfide with a particle size of 50-100 nm.

4. The environmentally friendly and anti-seepage DTY oil according to claim 1, characterized in that: The number of oxyethylene groups in the linear fatty alcohol polyoxyethylene ether is 7-9.

5. The environmentally friendly and anti-seepage DTY oil according to claim 1, characterized in that: The number of oxyethylene groups in the branched fatty alcohol polyoxyethylene ether is 5-7.

6. The environmentally friendly and anti-seepage DTY oil according to claim 1, characterized in that: The film-forming agent is an acrylic polymer, and its glass transition temperature (Tg) is -20°C to 0°C.

7. The environmentally friendly and anti-seepage DTY oil according to claim 1, characterized in that: The anti-splash agent is a compound of sodium salt of dioctyl sulfosuccinate and a low-carbon alcohol, and the weight ratio of the two is 1:1-1:3; the low-carbon alcohol is selected from at least one of isopropyl alcohol, n-butanol, and isobutanol.

8. The environmentally friendly and anti-seepage DTY oil according to claim 1, characterized in that: The residual oil rate of the DTY oil after aging at 60° C. for 7 days is ≤0.3%.

9. The environmentally friendly and anti-seepage DTY oil according to claim 1, characterized in that: The contact angle of the film layer formed by the DTY oil agent to deionized water at 25°C is ≥90°.

10. A method for preparing an environmentally friendly and anti-seepage DTY oil according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Add water to a mixing container and heat it to 40-50°C; S2, adding vegetable oil and nanoparticles in sequence, and using ultrasonic dispersion for 4 hours to fully disperse them; S3, add linear fatty alcohol polyoxyethylene ether and branched fatty alcohol polyoxyethylene ether, and continue stirring until emulsified; S4. Add a film-forming agent and an anti-splashing agent, stir and mix at a speed of 300-500 rpm for 1-2 hours, and cool to obtain the DTY oil.

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