Environment-friendly anti-yellowing anti-aging polyester DTY oiling agent and preparation method thereof
By using a composite oil agent composed of ethyl erucate, rapeseed oil and modified nano-titanium dioxide, the yellowing and aging problems of polyester fibers are solved, environmentally friendly and efficient anti-yellowing and anti-aging properties are achieved, and the processing performance and stability of polyester fibers are improved.
Patent Information
- Application Number
- CN202510857786.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-25
- Publication Date
- 2025-09-23
AI Technical Summary
Existing polyester fibers are prone to yellowing and aging during use. Traditional anti-yellowing and anti-aging treatment methods have problems such as short-lasting effects and heavy environmental burdens, making it difficult to meet environmental protection and long-term requirements.
It adopts an environmentally friendly component design, including a mixture of ethyl erucate and rapeseed oil as the base oil, combined with modified nano-titanium dioxide, benzotriazole and surfactants to form a composite anti-yellowing additive, which optimizes the anti-yellowing and anti-aging properties of polyester fibers, and improves stability through a composite solvent of butanol and deionized water.
It achieves significant anti-yellowing and anti-aging effects on polyester fibers, enhances processing performance and stability, reduces static electricity and dust adhesion, and meets the environmental protection standards of green development.
Smart Images
Figure SMS_1 
Figure SMS_2 
Figure SMS_3
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of polyester DTY oil, and more particularly to an environmentally friendly, anti-yellowing and anti-aging polyester DTY oil and a preparation method thereof. Background Art
[0002] Polyester, a common synthetic fiber, is widely used in textiles, apparel, and industrial applications due to its excellent abrasion resistance, wrinkle resistance, and strength. However, with extended use, polyester fibers are prone to yellowing and aging, which not only affects their appearance but also reduces their service life. Yellowing and aging are typically caused by ultraviolet radiation, oxidation reactions, and humid and hot environments. These factors can break the polyester molecular chains, leading to yellowing, loss of gloss, and even degradation of physical properties.
[0003] To address this issue, traditional anti-yellowing and anti-aging treatments often employ chemical additives such as antioxidants and UV absorbers. However, many traditional treatments suffer from issues such as short-term effectiveness, environmental impact, and increased stiffness of treated polyester fibers. As environmental awareness continues to deepen, the market is placing higher demands on environmentally friendly, long-term, and stable polyester finishes. Hazardous substances in traditional finishes, such as heavy metals and volatile organic compounds, no longer meet the sustainable development needs of the modern textile industry.
[0004] Currently, research on polyester DTY finishes is moving toward more environmentally friendly and long-lasting finishes. Improvements in finish formulations, particularly in the use of novel ingredients such as natural plant oils, non-toxic anti-yellowing agents, and surface-modified nano-titanium dioxide, have become a hot topic. For example, nano-titanium dioxide's photocatalytic properties and UV resistance have been widely used in anti-yellowing and anti-aging treatments for polyester. Furthermore, the use of environmentally friendly solvents and surfactants can improve product dispersibility, thereby optimizing polyester treatment results.
[0005] In the future, the development trend of polyester DTY oils will focus more on green environmental protection, further reducing the impact on the environment, and improving the anti-yellowing and anti-aging effects through more refined molecular design. In addition, with the continuous advancement of nanotechnology, the application of nanomaterials in polyester oils will become more and more extensive, thereby further improving the performance and stability of the oils. At the same time, as the industry attaches importance to sustainable development, low-toxicity and low-emission oil products will become the mainstream trend in the market. Summary of the Invention
[0006] The purpose of the present invention is to provide an environmentally friendly anti-yellowing and anti-aging polyester DTY oil agent and a preparation method thereof, which has excellent anti-yellowing and anti-aging properties and has the advantages of being environmentally friendly and pollution-free.
[0007] An environmentally friendly, anti-yellowing and anti-aging polyester DTY oil agent, comprising the following components in percentage: (1) Base oil: 30-40%, wherein the base oil is a mixture of ethyl erucate and rapeseed oil; (2) Antioxidant: 2-6%, wherein the antioxidant is vitamin E; (3) Composite anti-yellowing additive: 6-10%, the composite anti-yellowing additive is a mixture of ultraviolet absorber benzotriazole and anti-yellowing agent nano titanium dioxide, the particle size of the nano titanium dioxide is 20-40nm, and it needs to be modified to improve its dispersibility; (4) Surfactant: 2-4%; (5) Smoothing agent: 1-3%; (6) Clustering agent: 1-3%; (7) Anti-splash agent: 0.4-2%; (8) Antistatic agent: 0.6-1%; (9) Thickener: 0.6-1%; (10) Composite solvent: The composite solvent is a mixed solvent of butanol and deionized water, wherein the percentage of butanol is 15-25% and the deionized water is used to make up the balance to 100%.
[0008] Preferably, the formula ratio of ethyl erucate and rapeseed oil is 1g:3g.
[0009] Preferably, the formula ratio of the ultraviolet absorber benzotriazole and the anti-yellowing agent nano titanium dioxide is 1g:1g.
[0010] Preferably, the steps of modifying nano-titanium dioxide are as follows: deionized water solvent and nano-titanium dioxide are added to a reaction container, ultrasonically dispersed uniformly, the pH of the solution is adjusted to 4-5 using a dilute hydrochloric acid solution, ethylenediamine is added, and the formula ratio of the three is 60-100mL:10g:0.5-1.5mL, the reaction is stirred at 45-65°C for 2-4h, and the modified nano-titanium dioxide is washed with deionized water and dried to obtain modified nano-titanium dioxide.
[0011] Preferably, the surfactant is polyvinyl ether, the smoothing agent is polydimethylsiloxane, and the sizing agent is fatty alcohol.
[0012] Preferably, the anti-splash agent is polyacrylate, and the antistatic agent is cetyltrimethylammonium chloride.
[0013] Preferably, the thickener is hydroxyethyl cellulose.
[0014] A method for preparing an environmentally friendly, anti-yellowing and anti-aging polyester DTY oil agent comprises the following steps: S1. Accurately weigh each ingredient according to the formula and complete the corresponding modification process; S2, pretreatment: add ethyl erucate and rapeseed oil into the reactor and stir evenly to ensure that the oil phase base oil components are fully mixed; S3, adding antioxidants and composite anti-yellowing additives: adding vitamin E, benzotriazole, and modified nano-titanium dioxide to the base oil mixture obtained in step S2, and stirring evenly to ensure that the antioxidants and composite anti-yellowing additives are fully dispersed; S4. Adding surfactant, smoothing agent and sizing agent: Add polyvinyl ether, polydimethylsiloxane and fatty alcohol to the oil mixture obtained in step S3, and stir evenly to ensure that the surfactant, smoothing agent and sizing agent components are fully dispersed; S5. Adding an anti-splashing agent and an antistatic agent: Add polyacrylate and cetyltrimethylammonium chloride to the oil mixture obtained in step S4, and stir evenly to ensure that the anti-splashing agent and the antistatic agent are fully dispersed; S6. Adding a thickener: Add hydroxyethyl cellulose to the oil mixture obtained in step S5 and stir evenly to ensure that the thickener is fully dispersed; S7, solvent adjustment: first add butanol to the oil mixture obtained in step S6, and stir until it is uniformly dissolved, then add deionized water to make up to 100%, and stir evenly; S8, Filtration and Packaging: Filter the oil mixture obtained in step S7 to remove any undissolved impurities or particles, and package the final product into sealed containers to prevent moisture in the air from reacting with the oil.
[0015] Compared with the prior art, the advantages of the present invention are: (1) Environmentally friendly and harmless, in line with the needs of green development The oil agent uses natural vegetable oil (a mixture of ethyl erucate and rapeseed oil) as the base oil, avoiding the toxic chemical components that may be present in traditional oil agents, meeting environmental protection standards, reducing pollution to the environment, and causing no harm to the human body and the ecosystem.
[0016] (2) Significant anti-yellowing and anti-aging effects By utilizing a composite anti-yellowing additive consisting of the UV absorber benzotriazole and modified nano-titanium dioxide, this oil exhibits excellent anti-yellowing and anti-aging effects on polyester fibers. The modified nano-titanium dioxide enhances its dispersibility and UV absorption, effectively delaying the yellowing and aging of polyester fibers.
[0017] (3) Improve the processing performance and stability of polyester fibers This oil agent optimizes the processing performance of polyester fiber by adding surfactant polyvinyl ether and smoothing agent polydimethylsiloxane, allowing the oil agent to be evenly coated on the fiber surface, reducing friction and static electricity accumulation, and improving the production efficiency and finished product quality of polyester.
[0018] (4) Enhance the antistatic and anti-splash properties of polyester Antistatic agent (cetyltrimethylammonium chloride) and anti-splash agent (polyacrylate) are added to this oil, which effectively reduces the dust adhesion and fiber bonding problems caused by static electricity during the production and use of polyester fibers, thereby improving the cleanliness and comfort of polyester fibers.
[0019] (5) Strong adaptability and excellent stability The composite solvent system of this oil (a mixture of butanol and deionized water) gives it better solubility and stability, making it adaptable to a variety of production environments and different polyester processing conditions. The long-term stability and high-temperature resistance of the oil are effectively guaranteed, ensuring its long-term effectiveness in practical applications. DETAILED DESCRIPTION
[0020] Example 1: S1. Accurately weigh each ingredient according to the formula to prepare modified nano-titanium dioxide: add 60 mL of deionized water solvent and 10 g of nano-titanium dioxide to a reaction container, disperse evenly by ultrasonication, adjust the pH of the solution to 5 with dilute hydrochloric acid solution, add 0.5 mL of ethylenediamine, stir and react at 45°C for 2 h, wash with deionized water and dry to obtain modified nano-titanium dioxide; S2, pretreatment: a mixture of ethyl erucate and rapeseed oil with a formula ratio of 1g:3g was added to the reactor at 30% of the total amount of the oil agent, and stirred evenly to ensure that the oil phase base oil component was fully mixed; S3, adding antioxidants and composite anti-yellowing additives: adding 2% of the total oil amount of vitamin E, 6% of the total oil amount of benzotriazole and modified nano-titanium dioxide in a formula ratio of 1g:1g to the base oil mixture obtained in step S2, and stirring evenly to ensure that the antioxidants and composite anti-yellowing additives are fully dispersed; S4. Adding surfactant, lubricant and sizing agent: Add 2% of the total amount of the oil, 1% of the total amount of the oil, and 1% of the total amount of the oil, polydimethylsiloxane and fatty alcohol to the oil mixture obtained in step S3, and stir evenly to ensure that the surfactant, lubricant and sizing agent components are fully dispersed; S5. Adding an anti-splashing agent and an antistatic agent: Add 0.4% of the total amount of the oil to the oil mixture obtained in step S4. Polyacrylate and 0.6% of the total amount of the oil are added to the oil mixture, and stir evenly to ensure that the anti-splashing agent and the antistatic agent are fully dispersed; S6. Adding a thickener: Add 0.6% of the total amount of hydroxyethyl cellulose to the oil mixture obtained in step S5, and stir evenly to ensure that the thickener is fully dispersed; S7, solvent adjustment: first add butanol (15% of the total amount of the oil) to the oil mixture obtained in step S6, and stir until uniformly dissolved, then add deionized water to make up the total amount of the oil to 100%, and stir evenly; S8, Filtration and Packaging: Filter the oil mixture obtained in step S7 to remove any undissolved impurities or particles, and package the final product into sealed containers to prevent moisture in the air from reacting with the oil.
[0021] Example 2: S1. Accurately weigh each ingredient according to the formula to prepare modified nano-titanium dioxide: add 70 mL of deionized water solvent and 10 g of nano-titanium dioxide to a reaction container, disperse evenly by ultrasonication, adjust the pH of the solution to 4.75 with dilute hydrochloric acid solution, add 0.75 mL of ethylenediamine, stir and react at 50°C for 2.5 hours, wash with deionized water and dry to obtain modified nano-titanium dioxide; S2, pretreatment: a mixture of ethyl erucate and rapeseed oil with a formula ratio of 1g:3g was added to the reactor at 32.5% of the total amount of the oil agent, and stirred evenly to ensure that the oil phase base oil component was fully mixed; S3, adding antioxidants and composite anti-yellowing additives: adding 3% of the total oil amount of vitamin E, 7% of the total oil amount of benzotriazole and modified nano-titanium dioxide in a formula ratio of 1g:1g to the base oil mixture obtained in step S2, and stirring evenly to ensure that the antioxidants and composite anti-yellowing additives are fully dispersed; S4. Adding surfactant, lubricant and sizing agent: Add 2.5% of the total amount of the oil, polydimethylsiloxane (1.5%) and fatty alcohol (1.5%) to the oil mixture obtained in step S3, and stir evenly to ensure that the surfactant, lubricant and sizing agent components are fully dispersed; S5. Adding an anti-splashing agent and an antistatic agent: Add 0.8% of the total amount of the oil and 0.7% of the total amount of the oil to the oil mixture obtained in step S4. Stir evenly to ensure that the anti-splashing agent and the antistatic agent are fully dispersed; S6. Adding a thickener: Add 0.7% of the total amount of hydroxyethyl cellulose to the oil mixture obtained in step S5, and stir evenly to ensure that the thickener is fully dispersed; S7, solvent adjustment: first add butanol (17.5% of the total amount of the oil) to the oil mixture obtained in step S6, and stir until uniformly dissolved, then add deionized water to replenish the total amount of the oil to 100%, and stir evenly; S8, Filtration and Packaging: Filter the oil mixture obtained in step S7 to remove any undissolved impurities or particles, and package the final product into sealed containers to prevent moisture in the air from reacting with the oil.
[0022] Example 3: S1. Accurately weigh each ingredient according to the formula to prepare modified nano-titanium dioxide: add 80 mL of deionized water solvent and 10 g of nano-titanium dioxide to a reaction container, disperse evenly by ultrasonication, adjust the pH of the solution to 4.5 with dilute hydrochloric acid solution, add 1 mL of ethylenediamine, stir and react at 55°C for 3 h, wash with deionized water and dry to obtain modified nano-titanium dioxide; S2, pretreatment: a mixture of ethyl erucate and rapeseed oil with a formula ratio of 1g:3g was added to the reactor, taking 35% of the total amount of the oil, and stirred evenly to ensure that the oil phase base oil component was fully mixed; S3, adding antioxidants and composite anti-yellowing additives: adding 4% of the total oil amount of vitamin E, 8% of the total oil amount of benzotriazole and modified nano-titanium dioxide in a formula ratio of 1g:1g to the base oil mixture obtained in step S2, and stirring evenly to ensure that the antioxidants and composite anti-yellowing additives are fully dispersed; S4. Adding surfactant, lubricant and sizing agent: Add 3% of the total amount of the oil, 2% of the total amount of the oil, and 2% of the total amount of the oil, fatty alcohol to the oil mixture obtained in step S3, and stir evenly to ensure that the surfactant, lubricant and sizing agent components are fully dispersed; S5. Adding an anti-splashing agent and an antistatic agent: Add 1.2% of the total amount of the oil to the oil mixture obtained in step S4. Polyacrylate and 0.8% of the total amount of the oil are added to the oil mixture, and stir evenly to ensure that the anti-splashing agent and the antistatic agent are fully dispersed; S6. Adding a thickener: Add 0.8% of the total amount of hydroxyethyl cellulose to the oil mixture obtained in step S5, and stir evenly to ensure that the thickener is fully dispersed; S7, solvent adjustment: first add butanol (20% of the total amount of the oil) to the oil mixture obtained in step S6, and stir until uniformly dissolved, then add deionized water to make up the total amount of the oil to 100%, and stir evenly; S8, Filtration and Packaging: Filter the oil mixture obtained in step S7 to remove any undissolved impurities or particles, and package the final product into sealed containers to prevent moisture in the air from reacting with the oil.
[0023] Example 4: S1. Accurately weigh each ingredient according to the formula to prepare modified nano-titanium dioxide: add 90 mL of deionized water solvent and 10 g of nano-titanium dioxide to a reaction container, ultrasonically disperse the mixture evenly, adjust the pH of the solution to 4.25 with dilute hydrochloric acid solution, add 1.25 mL of ethylenediamine, stir and react at 60°C for 3.5 hours, wash with deionized water and dry to obtain modified nano-titanium dioxide; S2, pretreatment: a mixture of ethyl erucate and rapeseed oil with a formula ratio of 1g:3g was added to the reactor at 37.5% of the total amount of the oil, and stirred evenly to ensure that the oil phase base oil component was fully mixed; S3, adding antioxidants and composite anti-yellowing additives: adding 5% of the total amount of oil agent vitamin E, 9% of the total amount of oil agent, and a mixture of benzotriazole and modified nano-titanium dioxide in a formula ratio of 1g:1g to the base oil mixture obtained in step S2, and stirring evenly to ensure that the antioxidants and composite anti-yellowing additives are fully dispersed; S4. Adding surfactant, lubricant and sizing agent: Add 3.5% of the total amount of the oil, polydimethylsiloxane (2.5% of the total amount of the oil) and fatty alcohol (2.5% of the total amount of the oil) to the oil mixture obtained in step S3, and stir evenly to ensure that the surfactant, lubricant and sizing agent components are fully dispersed; S5. Adding an anti-splashing agent and an antistatic agent: Add 1.6% of the total amount of the oil to the oil mixture obtained in step S4. Polyacrylate and 0.9% of the total amount of the oil are added to the oil mixture, and stir evenly to ensure that the anti-splashing agent and the antistatic agent are fully dispersed; S6. Adding a thickener: Add 0.9% of the total amount of hydroxyethyl cellulose to the oil mixture obtained in step S5, and stir evenly to ensure that the thickener is fully dispersed; S7, solvent adjustment: first add butanol (22.5% of the total amount of the oil) to the oil mixture obtained in step S6, and stir until uniformly dissolved, then add deionized water to replenish the total amount of the oil to 100%, and stir evenly; S8, Filtration and Packaging: Filter the oil mixture obtained in step S7 to remove any undissolved impurities or particles, and package the final product into sealed containers to prevent moisture in the air from reacting with the oil.
[0024] Example 5: S1. Accurately weigh each ingredient according to the formula to prepare modified nano-titanium dioxide: add 100 mL of deionized water solvent and 10 g of nano-titanium dioxide to a reaction container, disperse evenly by ultrasonication, adjust the pH of the solution to 4 with dilute hydrochloric acid solution, add 1.5 mL of ethylenediamine, stir and react at 65°C for 4 hours, wash with deionized water and dry to obtain modified nano-titanium dioxide; S2, pretreatment: a mixture of ethyl erucate and rapeseed oil with a formula ratio of 1g:3g was added to the reactor at 40% of the total amount of the oil agent, and stirred evenly to ensure that the oil phase base oil component was fully mixed; S3, adding antioxidants and composite anti-yellowing additives: adding 6% of the total oil amount of vitamin E, 10% of the total oil amount of benzotriazole and modified nano-titanium dioxide in a formula ratio of 1g:1g to the base oil mixture obtained in step S2, and stirring evenly to ensure that the antioxidants and composite anti-yellowing additives are fully dispersed; S4. Adding surfactant, lubricant and sizing agent: Add 4% of the total amount of the oil, 3% of the total amount of the oil, and 3% of the total amount of the oil, polydimethylsiloxane and fatty alcohol to the oil mixture obtained in step S3, and stir evenly to ensure that the surfactant, lubricant and sizing agent components are fully dispersed; S5. Adding an anti-splashing agent and an antistatic agent: Add 2% of the total amount of the oil and 1% of the total amount of the oil to the oil mixture obtained in step S4. Stir evenly to ensure that the anti-splashing agent and the antistatic agent are fully dispersed; S6. Adding a thickener: Add 1% of the total amount of hydroxyethyl cellulose to the oil mixture obtained in step S5, and stir evenly to ensure that the thickener is fully dispersed; S7, solvent adjustment: first add butanol (25% of the total amount of the oil) to the oil mixture obtained in step S6, and stir until uniformly dissolved, then add deionized water to make up the total amount of the oil to 100%, and stir evenly; S8, Filtration and Packaging: Filter the oil mixture obtained in step S7 to remove any undissolved impurities or particles, and package the final product into sealed containers to prevent moisture in the air from reacting with the oil.
[0025] Performance Testing Anti-yellowing performance test A certain amount of polyester fiber, measuring 10 cm × 10 cm, was treated with the oil obtained in Examples 1-5, evenly coated, and dried. Its anti-yellowing performance was tested using a Q-SUN Xenon Test Chamber UV aging tester. The UV irradiation intensity was set to 0.35 W / m² (340 nm), the irradiation period was 300 hours, the temperature was 45°C, and the humidity was 30%. The YI value was measured using a colorimeter. The test results are shown in the following table: Anti-aging performance test A certain amount of polyester fiber, measuring 10 cm × 10 cm, was treated with the oil obtained in Examples 1-5, evenly coated, and dried. The anti-aging properties of the fibers were tested using a Q-FOG CCT thermal oxidation aging tester at 90°C and an oxygen flow rate of 10 L / min for 500 hours. The tensile strength and elongation were measured using an Instron 3369 tensile testing machine. The test results are shown in the following table: Antistatic performance test A certain amount of polyester fiber, measuring 10 cm × 10 cm, was treated with the oil obtained in Examples 1-5, evenly coated, and dried. The antistatic properties were tested using a TREK 343 electrostatic meter. The electrostatic charge of the treated polyester sample was measured using the electrostatic meter. The electrostatic charge of the untreated sample was 250 V. The test results are shown in the following table: Lubricity test A certain amount of polyester fiber, measuring 10 cm × 10 cm, was treated with the oil obtained in Examples 1-5, evenly coated, and dried. The lubricity of the fiber was tested using a Reiser M11 coefficient of friction tester. The coefficient of friction of the untreated sample was 0.3. The test results are shown in the following table: Surface gloss test A certain amount of polyester fiber, measuring 10 cm × 10 cm, was treated with the oil obtained in Examples 1-5, evenly coated, and dried. The surface gloss of the fiber was measured using a BYK Gardner Micro-Gloss 60 gloss meter. The gloss of the untreated sample was 70 GU. The test results are shown in the following table:
Claims
1. An environmentally friendly, anti-yellowing and anti-aging polyester DTY oil, characterized in that: The following components are included in percentage: (1) Base oil: 30-40%, wherein the base oil is a mixture of ethyl erucate and rapeseed oil; (2) Antioxidant: 2-6%, wherein the antioxidant is vitamin E; (3) Composite anti-yellowing additive: 6-10%, the composite anti-yellowing additive is a mixture of ultraviolet absorber benzotriazole and anti-yellowing agent nano titanium dioxide, the particle size of the nano titanium dioxide is 20-40nm, and it needs to be modified to improve its dispersibility; (4) Surfactant: 2-4%; (5) Smoothing agent: 1-3%; (6) Clustering agent: 1-3%; (7) Anti-splash agent: 0.4-2%; (8) Antistatic agent: 0.6-1%; (9) Thickener: 0.6-1%; (10) Composite solvent: The composite solvent is a mixed solvent of butanol and deionized water, wherein the percentage of butanol is 15-25% and the deionized water is used to make up the balance to 100%.
2. The environmentally friendly, anti-yellowing and anti-aging polyester DTY oil according to claim 1, characterized in that: The formula ratio of the ethyl erucate and rapeseed oil is 1g:3g.
3. The environmentally friendly, anti-yellowing and anti-aging polyester DTY oil according to claim 1, characterized in that: The formula ratio of the ultraviolet absorber benzotriazole and the anti-yellowing agent nano titanium dioxide is 1g:1g.
4. The environmentally friendly anti-yellowing and anti-aging polyester DTY oil according to claim 1, characterized in that: The steps of modifying nano-titanium dioxide are as follows: add deionized water solvent and nano-titanium dioxide to a reaction container, ultrasonically disperse them evenly, use dilute hydrochloric acid solution to adjust the pH of the solution to 4-5, add ethylenediamine, and the formula ratio of the three is 60-100mL:10g:0.5-1.5mL, stir and react at 45-65°C for 2-4h, wash with deionized water and dry to obtain modified nano-titanium dioxide.
5. The environmentally friendly, anti-yellowing and anti-aging polyester DTY oil according to claim 1, characterized in that: The surfactant is polyvinyl ether, the smoothing agent is polydimethylsiloxane, and the sizing agent is fatty alcohol.
6. The environmentally friendly, anti-yellowing and anti-aging polyester DTY oil according to claim 1, characterized in that: The anti-splash agent is polyacrylate, and the antistatic agent is cetyltrimethylammonium chloride.
7. The environmentally friendly, anti-yellowing and anti-aging polyester DTY oil according to claim 1, characterized in that: The thickener is hydroxyethyl cellulose.
8. A method for preparing an environmentally friendly, anti-yellowing and anti-aging polyester DTY oil, characterized in that: The following steps are involved: S1. Accurately weigh each ingredient according to the formula and complete the corresponding modification process; S2, pretreatment: add ethyl erucate and rapeseed oil into the reactor and stir evenly to ensure that the oil phase base oil components are fully mixed; S3, adding antioxidants and composite anti-yellowing additives: adding vitamin E, benzotriazole, and modified nano-titanium dioxide to the base oil mixture obtained in step S2, and stirring evenly to ensure that the antioxidants and composite anti-yellowing additives are fully dispersed; S4. Adding surfactant, smoothing agent and sizing agent: Add polyvinyl ether, polydimethylsiloxane and fatty alcohol to the oil mixture obtained in step S3, and stir evenly to ensure that the surfactant, smoothing agent and sizing agent components are fully dispersed; S5. Adding an anti-splashing agent and an antistatic agent: Add polyacrylate and cetyltrimethylammonium chloride to the oil mixture obtained in step S4, and stir evenly to ensure that the anti-splashing agent and the antistatic agent are fully dispersed; S6. Adding a thickener: Add hydroxyethyl cellulose to the oil mixture obtained in step S5 and stir evenly to ensure that the thickener is fully dispersed; S7, solvent adjustment: first add butanol to the oil mixture obtained in step S6, and stir until it is uniformly dissolved, then add deionized water to make up to 100%, and stir evenly; S8, Filtration and Packaging: Filter the oil mixture obtained in step S7 to remove any undissolved impurities or particles, and package the final product into sealed containers to prevent moisture in the air from reacting with the oil.