Polyester fdy spinning oil

Abstract

The present application relates to a kind of polyester FDY spinning oil agent.The polyester FDY spinning oil agent includes: 20wt%-25wt% of coconut oil polyoxyethylene ether, 5wt%-10wt% of fatty alcohol polyoxyethylene ether, 8wt%-15wt% of EL type polyoxyethylene ether, 45wt%-60wt% of smoothing agent, 1wt%-5wt% of antistatic agent and 5wt%-10wt% of water, wherein the number of EO in the coconut oil acid polyoxyethylene ether is 4-30.The polyester FDY spinning oil agent has excellent emulsification stability, wetting property, heat resistance and wear resistance, and the oil film strength is high, and polyester yarn is not easy to produce hair when used for preparation.

Description

Technical Field

[0001] This invention relates to the field of spinning auxiliaries, and in particular to a polyester FDY spinning oil. Background Technology

[0002] Traditional spinning oils mainly consist of smoothers, emulsifiers, bridging agents, and antistatic agents. Among these, emulsifiers are primarily nonionic surfactants such as alkylphenol polyoxyethylene ethers, fatty alcohol polyoxyethylene ethers, and fatty acid polyoxyethylene ethers. While alkylphenol polyoxyethylene ethers (APEOs) have good emulsifying and wetting properties, their significant environmental pollution and health risks have led to their discouraged addition to spinning oils. Furthermore, nonionic surfactants like fatty alcohol polyoxyethylene ethers and fatty acid polyoxyethylene ethers are expensive and have limited emulsifying effects. Their inclusion in oil systems can cause poor compatibility, excessive fumes, poor emulsifying power, and emulsion instability and spoilage.

[0003] Polyester FDY oiling agents are generally used in bright yarns (50-200D). Due to the high temperature of the hot rollers (125℃-135℃), the oiling agent requires high smoothness and abrasion resistance. Existing FDY oiling agents for polyester yarn generally suffer from low oil film strength and poor abrasion resistance, resulting in more fuzz and affecting spinning conditions. Furthermore, they cause significant friction at contact points such as spinning guide hooks and winding heads, leading to severe wear of equipment components and the generation of white powder. In addition, if the oiling emulsion has poor stability, it is prone to emulsion stratification. If the emulsion deteriorates, the particle size increases, causing the oil film on the yarn to become uneven, affecting spinning conditions. Severe deterioration may clog pipes, leading to uneven oiling and making the polyester filament prone to fuzz and poor forming.

[0004] Therefore, there is a need to develop a new generation of high-performance polyester FDY spinning oil that combines emulsification stability, wettability, heat resistance, and abrasion resistance. Summary of the Invention

[0005] Therefore, it is necessary to provide a polyester FDY spinning oil to address the above problems; the polyester FDY spinning oil has excellent emulsification stability, wettability, heat resistance and abrasion resistance, and high oil film strength, and is not prone to producing fuzz when used to prepare polyester yarn.

[0006] A polyester FDY spinning oil comprises: 20wt%-25wt% coconut oil polyoxyethylene ether, 5wt%-10wt% fatty alcohol polyoxyethylene ether, 8wt%-15wt% EL-type polyoxyethylene ether, 45wt%-60wt% smoothing agent, 1wt%-5wt% antistatic agent, and 5wt%-10wt% water, wherein the number of EOs in the coconut oil polyoxyethylene ether is 4-30.

[0007] In one embodiment, the chemical formula of the coconut oil polyoxyethylene ether is R-COO(CH2CH2O). n H, where n is the number of EOs, -R is a saturated straight-chain alkyl group, and n is 0.5 times the number of carbon atoms in -R.

[0008] In one embodiment, -R is selected from -C8H 17 -C 10 H 21 -C 12 H 25 -C 14 H 29 -C 16 H 31 -C 18 H 37 It has a mixed saturated straight-chain alkyl structure.

[0009] In one embodiment, the number of EOs in the coconut oil polyoxyethylene ether is 4-20.

[0010] In one embodiment, the HLB value of the coconut oil polyoxyethylene ether is 4-20.

[0011] In one embodiment, the fatty alcohol polyoxyethylene ether is selected from at least one of AEO-4, AEO-6, and AEO-9.

[0012] In one embodiment, the EL-type polyoxyethylene ether is selected from at least one of EL-10, EL-12, and EL-20.

[0013] In one embodiment, the smoothing agent is selected from at least one of monohydric fatty acid esters, dihydric fatty acid esters, or polyhydric fatty acid esters.

[0014] In one embodiment, the antistatic agent is selected from at least one of dodecyl ether phosphate, tridecyl ether phosphate, or tetradecyl ether phosphate.

[0015] In one embodiment, the polyester FDY spinning oil further includes 1wt%-5wt% of additives, the additives being selected from at least one of modified organosilicon, higher acids, and antioxidants.

[0016] The polyester FDY spinning oil of this invention utilizes the synergistic effect of a specific ratio of coconut oil polyoxyethylene ether with a specific number of EOs, fatty alcohol polyoxyethylene ether, EL-type polyoxyethylene ether, smoothing agent, antistatic agent, and water. This ensures that the emulsion-type polyester FDY spinning oil is less prone to demulsification and precipitation under high-temperature conditions, reduces the thermal volatility of the polyester FDY spinning oil, improves the oil film strength of the polyester FDY spinning oil, and enhances the heat resistance of the polyester FDY spinning oil. This not only reduces fuzz formation and improves spinning conditions when used to prepare polyester yarn, but also makes the polyester yarn preparation process more environmentally friendly, contributing to a better workshop operating environment. Furthermore, the polyester FDY spinning oil can rapidly spread upon instantaneous contact with the fiber surface, providing excellent protection for the polyester filament bundle and further reducing fuzz formation.

[0017] Therefore, the polyester FDY spinning oil has excellent emulsification stability, wettability, heat resistance and abrasion resistance, and high oil film strength, making it less likely to produce fuzz when used to prepare polyester yarn. Detailed Implementation

[0018] To facilitate understanding of the present invention, it will be described in more detail below. However, it should be understood that the present invention can be implemented in many different forms and is not limited to the embodiments or examples described herein. Rather, these embodiments or examples are provided to make the disclosure of the present invention more thorough and complete.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments or examples only and is not intended to limit the invention. The optional scope of the term "and / or" as used herein includes any one of two or more of the related listed items, as well as any and all combinations of the related listed items, including any two related listed items, any more related listed items, or a combination of all related listed items.

[0020] This invention provides a polyester FDY spinning oil, comprising: 20wt%-25wt% coconut oil polyoxyethylene ether, 5wt%-10wt% fatty alcohol polyoxyethylene ether, 8wt%-15wt% EL-type polyoxyethylene ether, 45wt%-60wt% smoothing agent, 1wt%-5wt% antistatic agent, and 5wt%-10wt% water, wherein the number of EO in the coconut oil polyoxyethylene ether is 4-30.

[0021] The described polyester FDY spinning oil utilizes the synergistic effect of a specific ratio of coconut oil polyoxyethylene ether with a specific number of EOs, fatty alcohol polyoxyethylene ether, EL-type polyoxyethylene ether, smoothing agent, antistatic agent, and water. This ensures that the emulsion-type polyester FDY spinning oil is less prone to demulsification and precipitation under high-temperature conditions, reduces the thermal volatility of the polyester FDY spinning oil, improves the oil film strength, and enhances the heat resistance of the polyester FDY spinning oil. This not only reduces fuzz formation and improves spinning conditions when used to prepare polyester yarn, but also makes the polyester yarn preparation process more environmentally friendly, contributing to a better workshop operating environment. Furthermore, the polyester FDY spinning oil spreads rapidly upon instantaneous contact with the fiber surface, providing excellent protection for the polyester filament bundle and further reducing fuzz formation.

[0022] The coconut oil polyoxyethylene ether is a derivative of coconut oil acid, a green, environmentally friendly, and renewable resource originating from bio-based sources, with the chemical formula R-COO(CH2CH2O). n H, where n is the number of EOs, -R is a saturated straight-chain alkyl group, and n is 0.5 times the number of carbon atoms in -R. Unlike traditional alkylphenol polyoxyethylene ethers (NP or OP), fatty alcohol polyoxyethylene ethers, and other nonionic surfactant emulsifiers, this invention preferably uses coconut oil polyoxyethylene ether with a special chemical structure as an emulsifier in polyester FDY spinning oil. This is more conducive to improving the synergistic effect of coconut oil polyoxyethylene ether, fatty alcohol polyoxyethylene ether, EL-type polyoxyethylene ether, smoothing agent, antistatic agent, and water, thereby giving the polyester FDY spinning oil excellent emulsification stability, wettability, heat resistance, and abrasion resistance.

[0023] Preferably, -R is selected from -C8H 17 -C 10 H 21 -C 12 H 25 -C 14 H 29 -C 16 H 31 -C 18 H 37 The mixed saturated straight-chain alkyl structure, based on the medium- and long-chain alkyl acid structures and long-chain alkyl acid structures in coconut oil polyoxyethylene ether, synergistically regulates the amount of polyoxyethylene ether in coconut oil polyoxyethylene ether, which can achieve a wider range of regulation on the emulsified smoothing agent in polyester FDY spinning oil. The coconut oil polyoxyethylene ether emulsifier can be more fully coated on the surface of the smoothing agent, making the emulsifying properties and emulsion stability of polyester FDY spinning oil better.

[0024] More preferably, the number of EOs in the coconut oil polyoxyethylene ether is 4-20, and more preferably 8-18.

[0025] Based on the presence of carboxylic acid in coconut oil polyoxyethylene ether, the carbon chain of coconut oil acid can be easily grafted onto the polyoxyethylene ether. Therefore, by controlling the number of EOs in coconut oil polyoxyethylene ether, it is beneficial to adjust the hydrophilicity and lipophilicity of coconut oil polyoxyethylene ether. Preferably, the hydrophilic-lipophilic balance (HLB) value of the coconut oil polyoxyethylene ether is 4-20, which can give the polyester FDY spinning oil agent better emulsification performance and further improve the emulsification stability, wettability, heat resistance and abrasion resistance of the polyester FDY spinning oil agent.

[0026] Preferably, the fatty alcohol polyoxyethylene ether is selected from at least one of AEO-4, AEO-6, and AEO-9.

[0027] Preferably, the EL-type polyoxyethylene ether is selected from at least one of EL-10, EL-12, and EL-20, which is more conducive to improving the oleophilicity of polyester FDY spinning oil and making the polyester yarn more compact.

[0028] In one embodiment, the smoothing agent is selected from at least one of monohydric fatty acid esters, dihydric fatty acid esters, or polyhydric fatty acid esters.

[0029] In one embodiment, the antistatic agent is selected from at least one of dodecyl ether phosphate, tridecyl ether phosphate, or tetradecyl ether phosphate.

[0030] In one embodiment, the polyester FDY spinning oil further includes 1wt%-5wt% of additives, the additives including at least one of modified organosilicon, high-grade acid, and antioxidant.

[0031] In one embodiment, the water is preferably deionized water.

[0032] In one embodiment, the preparation method of the polyester FDY spinning oil includes the following steps: according to the above ratio, 20wt%-25wt% of coconut oil polyoxyethylene ether, 5wt%-10wt% of fatty alcohol polyoxyethylene ether, 8wt%-15wt% of EL type polyoxyethylene ether, 45wt%-60wt% of smoothing agent, 1wt%-5wt% of antistatic agent, 1wt%-5wt% of additive and 5wt%-10wt% of water are mixed under constant temperature conditions to obtain the polyester FDY spinning oil of the present invention.

[0033] Therefore, the polyester FDY spinning oil of the present invention has excellent emulsification stability, wettability, heat resistance and abrasion resistance, and high oil film strength, and is not prone to producing fuzz when used to prepare polyester yarn.

[0034] The following specific examples will further illustrate the polyester FDY spinning oil.

[0035] Example 1

[0036] 48 wt% monohydric alcohol fatty acid ester smoothing agent and 22 wt% coconut oil acid polyoxyethylene ether (chemical formula C) were added sequentially. 12 H 25 The following ingredients were placed in a beaker: COO(CH2CH2O)6H (HLB value 6), 6 wt% AEO-4, 10 wt% EL-12, 2 wt% dodecyl ether phosphate antistatic agent, 2 wt% oleyl sarcosine, and 10 wt% deionized water. The mixture was then stirred thoroughly at a constant temperature of 30°C for 30 minutes to prepare polyester FDY spinning oil.

[0037] Example 2

[0038] Sequentially add 34 wt% trihydric alcohol fatty acid ester smoothing agent, 14 wt% monohydric alcohol fatty acid ester smoothing agent, and 20 wt% coconut oil acid polyoxyethylene ether (chemical formula C... 14 H 29 The following ingredients were placed in a beaker: COO(CH2CH2O)7H (HLB value 8), 5 wt% AEO-4, 10 wt% EL-12, 2 wt% tridecyl ether phosphate antistatic agent, 5 wt% oleyl sarcosine, and 10 wt% deionized water. The mixture was then stirred thoroughly at a constant temperature of 30°C for 30 minutes to prepare polyester FDY spinning oil.

[0039] Example 3

[0040] Sequentially add 18 wt% tetrahydric fatty acid ester smoothing agent, 16 wt% trihydric fatty acid ester smoothing agent, 14 wt% monohydric fatty acid ester smoothing agent, and 20 wt% coconut oil polyoxyethylene ether (chemical formula C... 16 H 33 The following ingredients were placed in a beaker: COO(CH2CH2O)8H (HLB value 10), 5 wt% AEO-4, 10 wt% EL-12, 2 wt% tetradecyl ether phosphate antistatic agent, 5 wt% N-oleoylsarcosine octadecylamine salt, and 10 wt% deionized water. The mixture was then stirred thoroughly at a constant temperature of 30°C for 30 minutes to prepare polyester FDY spinning oil.

[0041] Example 4

[0042] 45 wt% of diol fatty acid ester smoothing agent and 22 wt% coconut oil polyoxyethylene ether (chemical formula C) were added sequentially. 18 H 37The following ingredients were placed in a beaker: COO(CH2CH2O)9H (HLB value 4), 8 wt% AEO-6, 15 wt% EL-10, 5 wt% dodecyl ether phosphate antistatic agent, and 5 wt% deionized water. The mixture was then stirred thoroughly for 30 minutes at a constant temperature of 30°C to prepare polyester FDY spinning oil.

[0043] Example 5

[0044] Sequentially add 50 wt% diol fatty acid ester smoothing agent and 25 wt% coconut oil acid polyoxyethylene ether (chemical formula C8H) 17 The following ingredients were placed in a beaker: COO(CH2CH2O)4H (HLB value 20), 10 wt% AEO-9, 8 wt% EL-20, 1 wt% dodecyl ether phosphate antistatic agent, 1 wt% oleyl sarcosine, and 5 wt% deionized water. The mixture was then stirred thoroughly at a constant temperature of 30°C for 30 minutes to prepare polyester FDY spinning oil.

[0045] Example 6

[0046] The difference between Example 6 and Example 1 is that Example 6 uses a chemical formula of C. 12 H 25 COO(CH2CH2O)5H, coconut oil polyoxyethylene ether with an HLB value of 6.

[0047] Comparative Example 1

[0048] The difference between Comparative Example 1 and Example 1 is that C12-C14 alcohol polyoxyethylene ether (AEO-4) was used instead of coconut oil acid polyoxyethylene ether.

[0049] Comparative Example 2

[0050] The difference between Comparative Example 2 and Example 1 is that castor oil polyoxyethylene ether (EL-12) was used instead of coconut oil polyoxyethylene ether.

[0051] Comparative Example 3

[0052] The difference between Comparative Example 3 and Example 3 is that C12-C14 alcohol polyoxyethylene ether (AEO-4) was used instead of coconut oil acid polyoxyethylene ether.

[0053] Comparative Example 4

[0054] The difference between Comparative Example 4 and Example 3 is that oleic acid polyoxyethylene ether (OEO-10) is used instead of coconut oil polyoxyethylene ether.

[0055] Comparative Example 5

[0056] The difference between Comparative Example 5 and Example 1 is that coconut oil polyoxyethylene ether (chemical formula C8H) was used.17 COO(CH2CH2O)2H, HLB value 12) replaces coconut oil polyoxyethylene ether (chemical formula C). 12 H 25 COO(CH2CH2O)6H, HLB value is 6).

[0057] Comparative Example 6

[0058] The difference between Comparative Example 6 and Example 1 is that 15 wt% of coconut oil polyoxyethylene ether (chemical formula C) was used. 12 H 25 COO(CH2CH2O)6H, HLB value 6) and 10wt% AEO-4 replacing 20wt% coconut oil polyoxyethylene ether (chemical formula C) 12 H 25 COO(CH2CH2O)6H, HLB value 6) and 5wt% AEO-4.

[0059] Comparative Example 7

[0060] The difference between Comparative Example 7 and Example 1 is that 30 wt% of coconut oil polyoxyethylene ether (chemical formula C) was used. 12 H 25 COO(CH2CH2O)6H, HLB value 6) replaces 20wt% of coconut oil polyoxyethylene ether (chemical formula C). 12 H 25 COO(CH2CH2O)6H, HLB value 6), 5 wt% AEO-4 and 5 wt% EL-12.

[0061] Comparative Example 8

[0062] The difference between Comparative Example 8 and Example 1 is that 10 wt% AEO-4 and 5 wt% EL-12 were used instead of 5 wt% AEO-4 and 10 wt% EL-12.

[0063] Comparative Example 9

[0064] The difference between Comparative Example 9 and Example 1 is that 15 wt% of AEO-4 was used instead of 5 wt% of AEO-4 and 10 wt% of EL-12.

[0065] Comparative Example 10

[0066] The difference between Comparative Example 10 and Example 1 is that 15 wt% of EL-12 was used instead of 5 wt% of AEO-4 and 10 wt% of EL-12.

[0067] The polyester FDY spinning oils prepared in Examples 1 to 6 and Comparative Examples 1 to 10 were subjected to emulsification and emulsion stability tests (the emulsification and emulsion stability of the polyester FDY spinning oils were evaluated by measuring the turbidity change of the polyester oil emulsion with a test mass fraction of 20%). The test results are shown in Table 1 below.

[0068] The steps for preparing a 20% polyester FDY spinning oil emulsion are as follows: Slowly add 22.22g of the polyester FDY spinning oil prepared above to 77.78g of stirred deionized water, and stir thoroughly for 30 minutes to obtain an oil emulsion with a 20% mass fraction.

[0069] Emulsion Turbidity Test Method: The turbidity of a 20% (w / w) oil emulsion was tested using a Hach TL2350 turbidimeter. Approximately 30 mL of the 20% (w / w) oil emulsion sample was added to the graduation mark on the test tube. The cap was immediately closed, and the surface of the test tube was wiped clean. The test tube was placed in the sample container rack of the turbidimeter, aligning the triangle on the test tube with the reference mark on the sample container rack. The cap was pressed to close the tube until a click was heard. The "Read" button was pressed, and the instrument was allowed to automatically read the sample. The turbidity reading displayed on the instrument was recorded.

[0070] The turbidity of an emulsion reflects its appearance. Generally, the turbidity of a prepared oil emulsion should be controlled between 100 and 600. The turbidity varies with the emulsion concentration, but when the emulsifier in the oil has strong emulsifying power, the turbidity change is minimal for concentrations below 30%. Lower turbidity indicates better emulsification of the oil; generally, the emulsion appears bluish and clear. If the oil emulsion is milky white, its turbidity is greater than 1000, indicating poor light transmittance and poor stability, potentially leading to spoilage.

[0071] Table 1

[0072]

[0073] As shown in Table 1, the polyester FDY spinning oil of the present invention has good emulsification effect and emulsion stability. Moreover, by comparing Example 1 with Comparative Examples 1 and 2, and Example 3 with Comparative Examples 3 and 4, it can be proved that the polyester FDY spinning oil of the present invention, which uses coconut oil polyoxyethylene ether with a specific number of EO as the main component of the emulsifier, and is compounded with fatty acid ester smoothing agent, alcohol ether phosphate antistatic agent and EL type polyoxyethylene ether bundler, has better emulsification power than the compounding effect of commonly used fatty alcohol polyoxyethylene ether and fatty acid polyoxyethylene ether nonionic surfactant, and the emulsion has better long-term stability.

[0074] The polyester FDY spinning oils prepared in Examples 1 to 6 and Comparative Examples 1 to 10 were subjected to wettability tests (the wettability and penetration of the polyester FDY spinning oils at 40°C were tested using the canvas sheet method), and the test results are shown in Table 2 below.

[0075] Wettability test method: Weigh 990g of deionized water into a 1000mL beaker, slowly add 10g of the above-prepared polyester FDY spinning oil and stir continuously for 10min. Place the beaker in a 40℃ water bath and heat to 40℃. Take out a canvas sheet, clamp it with a clamp and put it into the water. Start the stopwatch at the same time as putting it in. Start the stopwatch again when the canvas sheet begins to sink and record the stopwatch data. The shorter the sinking time, the better the wettability.

[0076] Table 2

[0077]

[0078] As shown in Table 2, the settling times of Examples 1-6 are all shorter than those of Comparative Examples 1-10. Therefore, the polyester FDY spinning oiling agent of this invention has excellent wettability, allowing the oiling agent to spread rapidly upon instantaneous contact with the fiber surface, thus providing excellent protection for the polyester filaments. Furthermore, compared with commercially available Zhuben and Tiangongda oiling agents, Example 2 exhibits better wetting and penetration properties, indicating that the polyester FDY spinning oiling agent prepared in Example 2 of this invention has superior instantaneous spreading properties compared to competing oiling agents, enabling it to better protect the polyester filaments.

[0079] The polyester FDY spinning oils prepared in Examples 1 to 6 and Comparative Examples 1 to 10 were subjected to heat loss rate tests: 0.5g of the above-prepared polyester FDY spinning oils were weighed into aluminum foil, placed at 105℃ for 1 hour, then kept at a constant weight for 0.5 hours. When the weight remained almost unchanged, the oils were placed in a 150℃ oven for 1 hour (or 3 hours), and then cooled to room temperature in a desiccator. The oils were weighed and the heat loss rate was calculated. The test results are shown in Table 3 below.

[0080] Table 3

[0081]

[0082] As shown in Table 3, the heat loss rates of Examples 1-6 at 150℃ for 1 hour and 150℃ for 3 hours are all lower than those of Comparative Examples 1-10. Therefore, the polyester FDY spinning oil of this invention has excellent heat resistance and low thermal volatility. Furthermore, compared with commercially available Zhuben and Tiangong oils, Example 2 exhibits better heat resistance, and its low volatility polyester FDY spinning oil is more environmentally friendly, contributing to improved workshop operating conditions.

[0083] The polyester FDY spinning oils prepared in Examples 1 to 6 and Comparative Examples 1 to 10 were subjected to oil film strength testing. The oil film strength was determined using a four-ball friction tester, following the national standard for lubricant load-carrying capacity determination (four-ball method, GB / T3142-82). The test conditions for oil film strength were a spindle speed of 1450 r / min and a friction time of 10 s. The test conditions for long-wear wear scars were a continuous rotational friction at 1200 r / min under a pressure of 300 N for 1800 min. The test results are shown in Table 4 below.

[0084] Table 4

[0085]

[0086] As shown in Table 4, the oil film strength of Examples 1-6 is higher than that of Comparative Examples 1-10, and the long-grinding wear scars of Examples 1-6 are smaller. Therefore, the polyester FDY spinning oil of this invention has excellent abrasion resistance. Among them, Example 2 has the highest oil film strength and the smallest long-grinding wear scar diameter, meaning that Example 2 has the best abrasion resistance. In addition, compared with the commercially available Zhuben oil and Tiangongda oil, Example 2 has higher oil film strength and smaller long-grinding wear scar diameter, thus exhibiting better abrasion resistance and is less prone to fuzzing when used to prepare polyester yarn.

[0087] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A polyester FDY spinning oil, characterized in that, Comprise: 20wt%-25wt% of a polyoxyethylene coconut oil acid ether, 5wt%-10wt% of a fatty alcohol polyoxyethylene ether, 8wt%-15wt% of an EL type polyoxyethylene ether, 45wt%-60wt% of a smoothing agent, 1wt%-5wt% of an antistatic agent, and 5wt%-10wt% of water, wherein the polyoxyethylene coconut oil acid ether has an EO number of 4-30, and the chemical formula of the polyoxyethylene coconut oil acid ether is R-COO(CH2CH2O) n H, wherein n is the EO number, -R is a saturated linear alkyl group, and n is 0.5 times the number of carbon atoms of -R; and the smoothing agent is selected from at least one of a monohydric alcohol fatty acid ester, a dihydric alcohol fatty acid ester, or a polyhydric alcohol fatty acid ester.

2. The polyester FDY spinning finish according to claim 1, characterized in that, - R is selected from the group consisting of -C8H 17 , -C 10 H 21 , -C 12 H 25 , -C 14 H 29 , -C 16 H 31 , -C 18 H 37 mixed saturated straight chain alkyl structures.

3. The polyester FDY spinning finish according to claim 1, characterized in that, The number of EO in the coconut oil acid polyoxyethylene ether is 4-20.

4. The polyester FDY spinning finish according to claim 1, characterized in that, The HLB value of the coconut oil acid polyoxyethylene ether is 4-20.

5. The polyester FDY spinning finish according to claim 1, characterized in that, The fatty alcohol polyoxyethylene ether is selected from at least one of AEO-4, AEO-6, AEO-9.

6. The polyester FDY spinning finish according to claim 1, characterized in that, The EL type polyoxyethylene ether is selected from at least one of EL-10, EL-12, EL-20.

7. The polyester FDY spinning finish according to claim 1, characterized in that, The antistatic agent is selected from at least one of dodecanol ether phosphate, tridecanol ether phosphate or tetradecanol ether phosphate.

8. The polyester FDY spinning finish according to claim 1, characterized in that, The polyester FDY spinning oil further comprises 1wt%-5wt% of an additive, and the additive is selected from at least one of modified organosilicon, higher acid and antioxidant.

Images