Environmentally friendly oil agent for polyester POY filament and preparation method thereof

Abstract

The present invention relates to an environmentally friendly oil for polyester POY filaments and a preparation method. The oil contains no preservatives and no less than 2 wt% of a conditioning stabilizer; the conditioning stabilizer is Tween 80 and / or polyether-modified silicone oil. The oil exhibits no stratification when allowed to stand at 25°C for 48 hours. The preparation method comprises sequentially adding the conditioning stabilizer, an anti-coking agent, an anti-splashing agent, an antistatic agent, a sizing agent, a smoothing agent, an emulsifier, a penetrant, and water to a reactor in proportion, stirring uniformly, reacting at 40-60°C for 0.5-1 hour, and then transferring the mixture to a precipitation kettle for natural cooling and filtration to obtain the environmentally friendly oil for polyester POY filaments. The oil has high stability, is not susceptible to stratification and corruption, contains no preservatives, and avoids the generation of gases harmful to the environment and human health during high-temperature volatilization. Furthermore, it exhibits minimal coking on hot rollers and has excellent anti-splashing properties, enabling polyester spinning even at high spinning rates.

Description

Technical Field

[0001] The invention belongs to the technical field of spinning oils, and in particular relates to an environmentally friendly oil specially used for polyester POY filaments and a preparation method thereof. Background Art

[0002] Under traditional technology, the oil preparation process used in polyester POY filament processing is complex and the production cost is high. Furthermore, a certain proportion of preservatives is usually added to the oil to extend its storage period and prevent stratification and corruption. However, preservatives easily evaporate along with water during the spinning process, causing environmental pollution and harming human health. Furthermore, existing oils have poor anti-coking properties. Furthermore, if the oil does not effectively prevent splashing during the subsequent processing of POY filament, it can be thrown onto the machine and the ground by the high-speed spinning machine, contaminating the equipment and causing environmental pollution.

[0003] Alkylphenol polyoxyethylene ether and nonylphenol polyoxyethylene ether surfactants, which are commonly used as emulsifiers and penetrants in filament oils in the existing technology, have poor biodegradability and are toxic to aquatic organisms in water. They are chemical substances that can invade the human body, have effects similar to estrogen, and can endanger the normal hormone secretion of the human body. They are therefore environmentally unfriendly.

[0004] CN114753155A discloses a weather-resistant polyester POY oil, to which a certain amount of preservative is added to prevent corruption and stratification of the oil. However, the oil may cause environmental pollution during use. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and provide an environmentally friendly oil agent for polyester POY filament and a preparation method. The present invention achieves its anti-corruption effect by stabilizing the regulator, does not contain preservatives, and will not cause environmental pollution.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] The invention discloses an environmentally friendly oil for polyester POY filaments. The oil does not contain any preservatives but contains not less than 2 wt% of a regulating stabilizer. The regulating stabilizer can increase the stability of the oil, thereby achieving its anti-corruption effect. The regulating stabilizer is Tween 80 and / or polyether-modified silicone oil. The oil does not stratify when left standing at 25°C for 48 hours.

[0008] The prior art oils do not have an antiseptic effect when no preservatives are added, even if they contain regulating stabilizers. The main reason is that the regulating stabilizers in the prior art oils generally use substances such as higher fatty acids and fatty alcohols, which are generally insoluble in water and cannot improve the stability of the oils. The oils of the present invention still have an antiseptic effect when no preservatives are added, mainly because a certain amount of a specific type of regulating stabilizer is added thereto. The regulating stabilizer is Tween 80 and / or polyether-modified silicone oil, among which Tween 80 is a non-ionic surfactant with strong hydrophilicity. Adding it to the oil can increase the stability of the oil, thereby achieving an anti-stratification effect. Tween 80 has the function of preventing bacterial growth, thereby achieving an anti-corrosion effect. Since the polyether group of the polyether-modified silicone oil is hydrophilic, the hydrophilicity of the polyether-modified silicone oil is increased, and the molecule contains both hydrophobic and hydrophilic groups, so that this type of silicone oil exhibits good water solubility and does not cause problems such as demulsification during use, thereby giving the oil anti-stratification properties.

[0009] As the preferred technical solution:

[0010] In the environmentally friendly oil for polyester POY filament as described above, the content of the regulating stabilizer in the oil does not exceed 4wt%, otherwise the viscosity of the oil may increase, thereby affecting its anti-coking property.

[0011] The environmentally friendly oil for polyester POY filament described above also contains 1 to 3 wt% of an anti-coking agent. The anti-coking agent is mainly composed of fatty acid methyl ester ethoxylates (FMEE) double-terminated surfactants. FMEE is a new type of double-terminated non-ionic surfactant. Its ethoxy structure exists at two different positions in the molecular chain, obtained by simultaneous ethoxylation of hydroxyl and ester groups. The same molecular formula has both ester-ether and alcohol-ether structures, and has excellent thermal stability, meeting anti-coking requirements.

[0012] As described above, the environmentally friendly oil agent for polyester POY filament, the other components of the anti-coking agent are benzyl alcohol and / or 1,4-benzenedimethanol, which can inhibit the coking of the oil agent at high temperatures; the mass ratio of the main component to other components in the anti-coking agent is 2 to 3:0.5.

[0013] The environmentally friendly oil for polyester POY filaments further contains 0.5-2 wt% of an anti-splash agent; the main component of the anti-splash agent is polyisobutylene-1000 (PIB).

[0014] The prior art generally achieves the anti-splashing effect by adding an anti-splash agent (SANT) to the oil. SANT allows the oil to penetrate the fiber well to achieve the anti-splashing effect. Unlike the prior art, the present invention achieves the anti-splashing effect by adding PIB to the oil. PIB can increase the shear force between the oil molecules and increase the attraction between the oil molecules to prevent them from being thrown out and splashing by high-speed machinery.

[0015] As described above, the environmentally friendly oil agent for polyester POY filament includes an anti-splash agent composed of polyisobutylene-1000, 2,6-di-tert-butyl-4-methylphenol, and polymethyl methacrylate in a mass ratio of 1.5-2.5:1:0.5-1.5. 2,6-di-tert-butyl-4-methylphenol serves as an antioxidant to prevent decomposition caused by UV.

[0016] Polyisobutylene-1000 will decompose under UV light, affecting its performance. When used / stored alone as an anti-splash agent, there is the problem of light decomposition. However, adding a small amount of 2,6-di-tert-butyl-4-methylphenol as an antioxidant can effectively prevent the decomposition of polyisobutylene-1000 and ensure its performance. The addition of polymethyl methacrylate can introduce certain polar components and improve the compatibility with the polar components in POY oil.

[0017] The environmentally friendly oil for polyester POY filament described above also contains 2 to 4 wt% of an antistatic agent; the antistatic agent is one or more of alkyl phosphate potassium salt, cocamidopropyl betaine and alkyl sulfonate salt; the antistatic agent of the present invention combines excellent antistatic properties, permeability and compatibility, and is non-corrosive to metal equipment.

[0018] The environmentally friendly oil for polyester POY filaments further contains 0.5-2 wt% of a sizing agent; the sizing agent is fatty acid triethanolamine salt and / or oleic acid triethanolamine salt.

[0019] The environmentally friendly oil agent for polyester POY filament as described above also contains 2 to 5 wt% of a smoothing agent; the smoothing agent is one or more of industrial white oil, fatty acid polyoxyethylene ester and fatty acid ester; the smoothing agent of the present invention has better heat resistance than commonly used smoothing agents, is not easy to volatilize at high temperatures, has high oil film strength, and can be used in high-speed spinning.

[0020] The environmentally friendly oil for polyester POY filament further comprises 1-2 wt% of an emulsifier, wherein the emulsifier is one or more of castor oil polyoxyethylene ether, lauryl alcohol polyoxyethylene ether, and sorbitan monooleate. The emulsifier has good heat resistance, improves fiber smoothness, and is non-smoking and non-agglomerating. It can meet wetting requirements, adjust smoothness, and enhance wear resistance and bundling properties.

[0021] The environmentally friendly oil agent for polyester POY filament described above also contains 1 to 3 wt% of a penetrant; the penetrant JFC is a fatty alcohol polyoxyethylene ether; the ether bonds in the penetrant molecules of the present invention are not easily destroyed by acids and alkalis, so the penetrant has high stability, good water solubility, and good compatibility with other surfactants.

[0022] The environmentally friendly oil agent for polyester POY filaments mentioned above also contains 80-90 wt% of water.

[0023] As described in any of the above items, during the process of processing polyester POY filaments using the special environmentally friendly oil agent for polyester POY filaments, no coking phenomenon occurs within 250°C, and no oil agent splashes onto the machine and the ground within 48 hours; during the processing of polyester POY filaments, the spinning speed is 2800-3300 m / min.

[0024] The present invention also provides a method for preparing an environmentally friendly oil agent for polyester POY filament as described in any of the above items, wherein the components are sequentially added to a reactor in proportion, stirred evenly, reacted at 40-60° C. for 0.5-1 hour, and then sent to a precipitation kettle for natural cooling and filtration to obtain the environmentally friendly oil agent for polyester POY filament.

[0025] Beneficial effects:

[0026] (1) The environmentally friendly oil agent for polyester POY filament of the present invention uses FMEE as a surfactant to greatly improve the antioxidant and anti-coking properties of crude oil, reduce coking on the hot roller, and reduce the difficulty of cleaning and maintenance of the hot roller.

[0027] (2) The oil of the present invention is added with an anti-splashing agent, which has a good anti-splashing effect and avoids the oil splashing and contaminating the equipment and the ground during the post-processing process. Even at a higher spinning rate, polyester spinning can still be carried out.

[0028] (3) The oil of the present invention is prepared using environmentally friendly surfactants that are non-toxic to the environment and human body.

[0029] (4) The oil of the present invention is not easy to delaminate and corrupt, does not contain preservatives, and uses a regulating stabilizer to increase the stability of the oil, thereby achieving its anti-corrosion effect, thereby avoiding the environmental hazards and impact on human health caused by the high-temperature volatilization of preservatives during the spinning process.

[0030] (5) The anti-coking agent used in the present invention has low viscosity and density, strong chemical stability, small viscosity-temperature change, good heat resistance, and good stability in both acidic and alkaline liquids. DETAILED DESCRIPTION

[0031] Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiments are only used to illustrate the present invention and are not used in limiting the scope of the present invention.In addition, should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall equally within the scope limited by the appended claims of the application.

[0032] The following is the performance test method in each embodiment:

[0033] Kinematic viscosity (30°C): measured at 30°C according to GB / T265 using the oils prepared in the following examples.

[0034] Acid value: measured according to GB / T6365;

[0035] Water content in crude oil: measured according to the Karl Fischer method;

[0036] Breaking strength: measured using an XQ-1A fiber strength and elongation tester (XQ-1A, Shanghai Xinxian Instrument Co., Ltd.) according to the national standard GB / T 14344-2022;

[0037] Elongation at break: measured using an XQ-1A fiber strength and elongation tester (XQ-1A, Shanghai Xinxian Instrument Co., Ltd.) according to the national standard GB / T 14344-2022;

[0038] Boiling water shrinkage: measured using a YG368 chemical fiber filament shrinkage tester (Model YG368, Changzhou Zhongxian Testing Instrument Co., Ltd.) according to the national standard GB / T6505-2001;

[0039] Oil content: The oil content was determined using a fiber grease quick extractor (YG981, Changzhou Shuanggu Dunda Electromechanical Technology Co., Ltd.) according to the national standard GB / T6504-2008.

[0040] The following are the manufacturers and brands of the raw materials involved in the examples:

[0041] Tween 80: Manufacturer: Aladdin Reagent (Shanghai) Co., Ltd., brand number 9005-65-6;

[0042] Polyether modified silicone oil: manufacturer is Shanghai MacLean Biochemical Technology Co., Ltd., brand name P875564;

[0043] Fatty acid methyl ester ethoxylate-based double-end-capped surfactant (fatty acid methyl ester ethoxylate): manufacturer: Aladdin Reagent (Shanghai) Co., Ltd., brand: 65218-33-7;

[0044] Polymethyl methacrylate: manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., brand number 9011-14-7;

[0045] Polyisobutylene-1000 (PIB): Manufacturer: Aladdin Reagent (Shanghai) Co., Ltd., brand number 9003-27-4;

[0046] Fatty acid polyoxyethylene esters (polyoxyethylene sorbitan fatty acid esters): manufactured by Aladdin Reagent (Shanghai) Co., Ltd., brand number 9005-64-5;

[0047] Castor oil polyoxyethylene ether: Manufacturer: Shanghai MacLean Biochemical Technology Co., Ltd., brand number 61791-12-6;

[0048] Dodecanol polyoxyethylene ether (isodecyl alcohol polyoxyethylene ether): manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., brand number 61827-42-7;

[0049] Fatty alcohol polyoxyethylene ether: Manufacturer: Aladdin Reagent (Shanghai) Co., Ltd., brand number 68131-39-5;

[0050] Benzyl alcohol: The manufacturer is Aladdin Reagent (Shanghai) Co., Ltd., brand number 100-51-6;

[0051] 2,6-di-tert-butyl-4-methylphenol: manufacturer is Huayuan.com, brand number is 128-37-0;

[0052] Potassium salt of alkyl phosphate: specifically potassium hexadecyl hydrogen phosphate, manufactured by Aladdin Reagent (Shanghai) Co., Ltd., brand number 19035-79-1;

[0053] Fatty acid triethanolamine salt: specifically triethanolamine stearate, manufactured by Aladdin Reagent (Shanghai) Co., Ltd., brand number 4568-28-9;

[0054] Industrial white oil: specifically liquid paraffin, manufactured by Shanghai MacLean Biochemical Technology Co., Ltd., brand 8042-47-5 (P815701);

[0055] 1,4-Benzenediol: Manufacturer: Shanghai MacLean Biochemical Technology Co., Ltd., brand number 589-29-7;

[0056] Cocamidopropyl betaine: Manufacturer: Shanghai MacLean Biochemical Technology Co., Ltd., brand number 86438-79-1 (C854783);

[0057] Alkyl sulfonate: specifically tetradecyl sulfonic acid sodium salt, manufactured by Aladdin Reagent (Shanghai) Co., Ltd., brand number 1191-50-0;

[0058] Triethanolamine oleate (triethanolamine monooleate): manufacturer: Shanghai MacLean Biochemical Technology Co., Ltd., brand number 2717-15-9;

[0059] Fatty acid ester: specifically polyglycerol fatty acid ester, manufactured by Shanghai MacLean Biochemical Technology Co., Ltd., brand number 67784-82-1;

[0060] Sorbitan monooleate (also known as Span 80): Manufacturer: Aladdin Reagent (Shanghai) Co., Ltd., brand name 1338-43-8 (S110839);

[0061] Example 1

[0062] A method for preparing an environmentally friendly oil agent for polyester POY filament comprises the following steps:

[0063] (1) Preparation of raw materials:

[0064] Regulating stabilizer: Tween 80;

[0065] Anti-coking agent: composed of a fatty acid methyl ester ethoxylate double-end-type surfactant and benzyl alcohol in a mass ratio of 2:0.5;

[0066] Anti-splash agent: composed of polyisobutylene-1000 (PIB), 2,6-di-tert-butyl-4-methylphenol and polymethyl methacrylate in a mass ratio of 1.5:1:0.5;

[0067] Antistatic agent: potassium salt of alkyl phosphate;

[0068] Bunching agent: triethanolamine salt of fatty acid;

[0069] Lubricant: industrial white oil;

[0070] Emulsifier: castor oil polyoxyethylene ether;

[0071] Penetrant JFC: fatty alcohol polyoxyethylene ether;

[0072] water;

[0073] (2) 2 wt% of a regulating stabilizer, 1 wt% of an anti-coking agent, 0.5 wt% of an anti-splashing agent, 2 wt% of an antistatic agent, 0.5 wt% of a bundling agent, 2 wt% of a smoothing agent, 1 wt% of an emulsifier, 1 wt% of a penetrant, and 90 wt% of water are added to a reactor in proportion, stirred evenly, reacted at 40° C. for 1 h, and then sent to a precipitation kettle for natural cooling and filtration to obtain an environmentally friendly oil agent specifically for polyester POY filament.

[0074] The final environmentally friendly oil for polyester POY filament is a colorless and transparent liquid. No stratification occurs after standing at 25°C for 48 hours, and the kinematic viscosity (30°C) is 115mm 2 / s, the acid value is 2mgKOH / g, and the water content in the crude oil is 90%.

[0075] During the processing of polyester POY filaments using the environmentally friendly oil agent prepared above, no coking occurred at 250°C, and no oil agent splashed onto the machine and the ground within 48 hours; wherein, during the processing of polyester POY filaments, the spinning speed was 2800 m / min.

[0076] The polyester POY filament finally obtained has a fiber linear density of 77 dtex, a breaking strength of 4 cN / dtex, an elongation at break of 24%, a boiling water shrinkage of 2%, and an oil content of 0.4%.

[0077] Comparative Example 1

[0078] A method for preparing an environmentally friendly oil agent for polyester POY filament is basically the same as that in Example 1, except that the stabilizer is dimethyl silicone oil (Aladdin Reagent (Shanghai) Co., Ltd., 63148-62-9).

[0079] When the environmentally friendly oil for polyester POY filament prepared above was left to stand at 25°C for 48 hours, stratification occurred.

[0080] Comparing Comparative Example 1 with Example 1, it can be seen that the oil in Comparative Example 1 uses the regulating stabilizer of the prior art, and its anti-corruption effect is poor.

[0081] Example 2

[0082] A method for preparing an environmentally friendly oil agent for polyester POY filament comprises the following steps:

[0083] (1) Preparation of raw materials:

[0084] Regulating stabilizer: Tween 80;

[0085] Anti-coking agent: composed of a fatty acid methyl ester ethoxylate double-end-capped surfactant and 1,4-benzenedimethanol in a mass ratio of 3:0.5;

[0086] Anti-splash agent: composed of polyisobutylene-1000 (PIB), 2,6-di-tert-butyl-4-methylphenol and polymethyl methacrylate in a mass ratio of 2.5:1:1.5;

[0087] Antistatic agent: cocamidopropyl betaine;

[0088] Bunching agent: triethanolamine salt of fatty acid;

[0089] Smoothing agent: fatty acid polyoxyethylene ester;

[0090] Emulsifier: polyoxyethylene lauryl ether;

[0091] Penetrant JFC: fatty alcohol polyoxyethylene ether;

[0092] water;

[0093] (2) 4 wt% of a regulating stabilizer, 3 wt% of an anti-coking agent, 2 wt% of an anti-splashing agent, 3 wt% of an antistatic agent, 2 wt% of a clustering agent, 2.5 wt% of a smoothing agent, 1.5 wt% of an emulsifier, 2 wt% of a penetrant, and 80 wt% of water are added to a reactor in proportion, stirred evenly, reacted at 45° C. for 0.6 h, and then sent to a precipitation kettle for natural cooling and filtration to obtain an environmentally friendly oil agent specifically for polyester POY filament.

[0094] The final environmentally friendly oil for polyester POY filament is a colorless and transparent liquid. It does not stratify after standing at 25°C for 48 hours, and its kinematic viscosity (30°C) is 135mm 2 / s, the acid value is 1.5mgKOH / g, and the water content in the crude oil is 80%.

[0095] During the process of processing polyester POY filament using the above-prepared environmentally friendly oil agent for polyester POY filament, no coking phenomenon occurs within 250°C, and no oil agent splashes onto the machine and the ground within 48 hours; wherein, during the processing of polyester POY filament, the spinning speed is 3000m / min.

[0096] The polyester POY filament finally obtained has a fiber linear density of 77 dtex, a breaking strength of 4.2 cN / dtex, a breaking elongation of 28%, a boiling water shrinkage of 2.2%, and an oil content of 0.3%.

[0097] Example 3

[0098] A method for preparing an environmentally friendly oil agent for polyester POY filament comprises the following steps:

[0099] (1) Preparation of raw materials:

[0100] Adjusting stabilizer: polyether modified silicone oil;

[0101] Anti-coking agent: composed of a fatty acid methyl ester ethoxylate double-end-capped surfactant and 1,4-benzenedimethanol in a mass ratio of 2.5:0.5;

[0102] Anti-splash agent: composed of polyisobutylene-1000 (PIB), 2,6-di-tert-butyl-4-methylphenol and polymethyl methacrylate in a mass ratio of 1.5:1:1;

[0103] Antistatic agent: alkyl sulfonate;

[0104] Bunching agent: triethanolamine oleate;

[0105] Smoothing agent: fatty acid ester;

[0106] Emulsifier: sorbitan monooleate;

[0107] Penetrant JFC: fatty alcohol polyoxyethylene ether;

[0108] water;

[0109] (2) 2.5 wt% of a regulating stabilizer, 1.5 wt% of an anti-coking agent, 0.6 wt% of an anti-splashing agent, 4 wt% of an antistatic agent, 0.7 wt% of a clustering agent, 5 wt% of a smoothing agent, 2 wt% of an emulsifier, 3 wt% of a penetrant, and 80.7 wt% of water were added to a reactor in proportion, stirred evenly, reacted at 57° C. for 0.8 h, and then sent to a precipitation kettle for natural cooling and filtration to obtain an environmentally friendly oil agent specifically for polyester POY filament.

[0110] The final environmentally friendly oil for polyester POY filament is a colorless transparent liquid. No stratification occurs after standing at 25°C for 48 hours. The kinematic viscosity (30°C) is 120 mm 2 / s, the acid value is 1.3mgKOH / g, and the water content in the crude oil is 80%.

[0111] During the processing of polyester POY filaments using the environmentally friendly oil agent specifically prepared above, no coking occurred at 250°C, and no oil agent splashed onto the machine and the ground within 48 hours; wherein, during the processing of polyester POY filaments, the spinning speed was 2900 m / min.

[0112] The polyester POY filament finally obtained has a fiber linear density of 115 dtex, a breaking strength of 4.9 cN / dtex, a breaking elongation of 26%, a boiling water shrinkage of 3%, and an oil content of 0.5%.

[0113] Example 4

[0114] A method for preparing an environmentally friendly oil agent for polyester POY filament comprises the following steps:

[0115] (1) Preparation of raw materials:

[0116] Adjusting stabilizer: a mixture of Tween 80 and polyether modified silicone oil in a mass ratio of 1:1;

[0117] Anti-coking agent: composed of a fatty acid methyl ester ethoxylate type double-end-capped surfactant in a mass ratio of 2.25:0.5 and a mixture of benzyl alcohol and 1,4-benzenedimethanol in a mass ratio of 1:1;

[0118] Anti-splash agent: composed of polyisobutylene-1000 (PIB), 2,6-di-tert-butyl-4-methylphenol and polymethyl methacrylate in a mass ratio of 2:1:1.25;

[0119] Antistatic agent: a mixture of potassium alkyl phosphate and alkyl sulfonate in a mass ratio of 1:1;

[0120] Bunching agent: a mixture of triethanolamine salt of fatty acid and triethanolamine salt of oleic acid in a mass ratio of 1:1;

[0121] Smoothing agent: a mixture of fatty acid polyoxyethylene ester and fatty acid ester in a mass ratio of 1:1;

[0122] Emulsifier: a mixture of lauryl alcohol polyoxyethylene ether and sorbitan monooleate in a mass ratio of 1:1;

[0123] Penetrant JFC: fatty alcohol polyoxyethylene ether;

[0124] water;

[0125] (2) 3 wt% of a regulating stabilizer, 2 wt% of an anti-coking agent, 1 wt% of an anti-splashing agent, 3 wt% of an antistatic agent, 0.5 wt% of a clustering agent, 2 wt% of a smoothing agent, 1 wt% of an emulsifier, 1 wt% of a penetrant, and 86.5 wt% of water are added to a reactor in proportion, stirred evenly, reacted at 60° C. for 0.5 h, and then sent to a precipitation kettle for natural cooling and filtration to obtain an environmentally friendly oil agent specifically for polyester POY filament.

[0126] The final environmentally friendly oil for polyester POY filament is a colorless transparent liquid. No stratification occurs after standing at 25°C for 48 hours. The kinematic viscosity (30°C) is 128mm 2 / s, the acid value is 1mgKOH / g, and the water content in the crude oil is 86%.

[0127] During the process of processing polyester POY filament using the above-prepared environmentally friendly oil agent for polyester POY filament, no coking phenomenon occurs within 250°C, and no oil agent splashes onto the machine and the ground within 48 hours; wherein, during the processing of polyester POY filament, the spinning speed is 3300m / min.

[0128] The polyester POY filament finally obtained has a fiber linear density of 120 dtex, a breaking strength of 5 cN / dtex, an elongation at break of 25%, a boiling water shrinkage of 2.7%, and an oil content of 0.4%.

[0129] Example 5

[0130] A method for preparing an environmentally friendly oil agent for polyester POY filament is basically the same as that in Example 4, except that the anti-coking agent contains only a double-terminated surfactant of fatty acid methyl ester ethoxylate.

[0131] During the process of processing polyester POY filaments with the environmentally friendly oil agent prepared above, the hot roller was inspected and a small amount of coking occurred within 250°C.

[0132] By comparing Example 5 with Example 4, it can be seen that when the oil prepared in Example 5 is used to process polyester POY filaments, when the temperature at the hot roller is within 250°C, a small amount of coking occurs. However, when the oil prepared in Example 4 is used to process polyester POY filaments, when the temperature at the hot roller is within 250°C, no coking occurs.

[0133] Example 6

[0134] A method for preparing an environmentally friendly oil agent for polyester POY filament is basically the same as that in Example 4, except that the anti-coking agent is methyl-terminated methyl allyl alcohol polyoxyethylene ether (Aladdin Reagent (Shanghai) Co., Ltd., 31497-33-3).

[0135] During the process of processing polyester POY filaments with the environmentally friendly oil agent prepared above, the hot roller was inspected and a large amount of coking occurred within 250°C.

[0136] Comparing Example 6 with Example 4, it can be seen that Example 6 uses methyl-terminated methyl allyl alcohol polyoxyethylene ether as an anti-coking agent. During the spinning process, when the temperature at the hot roller is within 250°C, a large amount of coking will occur. However, when the oil prepared by Example 4 is used during the spinning process, when the temperature at the hot roller is within 250°C, no coking will occur.

[0137] Example 7

[0138] A method for preparing an environmentally friendly oil agent for polyester POY filament is basically the same as that in Example 4, except that the anti-splash agent contains only polyisobutylene-1000 (PIB).

[0139] During the process of processing polyester POY filaments with the environmentally friendly oil agent prepared above, the oil agent splashing situation was detected, and it was found that a small amount of oil agent splashed onto the machine and the ground within 48 hours.

[0140] Comparing Example 7 with Example 4, it can be seen that the use of PIB alone in the anti-splash agent of Example 7 cannot improve the compatibility with the polar components in the POY oil, and its anti-splash effect is affected. During the processing of polyester POY filament, a small amount of oil will splash onto the machine and the ground within 48 hours.

[0141] Example 8

[0142] A method for preparing an environmentally friendly oil agent for polyester POY filament is basically the same as that in Example 4, except that the anti-splash agent is SANT (manufacturer: Shanghai MacLean Biochemical Technology Co., Ltd., brand number 304909-07-7).

[0143] During the process of processing polyester POY filaments with the environmentally friendly oil agent prepared above, the oil agent splashing situation was detected, and it was found that a small amount of oil agent splashed onto the machine and the ground within 48 hours.

[0144] Comparing Example 8 with Example 4, it can be seen that Example 8 uses SANT as an anti-splash agent. During the processing of polyester POY filament, a small amount of oil will splash onto the machine and the ground within 48 hours, resulting in oil waste. The oil prepared in Example 4 has a more ideal anti-splash effect than SANT. No oil splashes onto the machine and the ground within 48 hours, avoiding the waste of oil due to splashing.

[0145] The above-described embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the contents taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms belong to the scope of protection of the present invention.

Claims

1. An environmentally friendly oil agent for polyester POY filament, characterized in that: It does not contain preservatives, but contains not less than 2wt% of a regulating stabilizer, 1-3wt% of an anti-coking agent, 0.5-2wt% of an anti-splashing agent and 2-4wt% of an antistatic agent; the regulating stabilizer is Tween 80 and / or polyether-modified silicone oil; the oil does not stratify when left standing at 25°C for 48 hours; the main component of the anti-coking agent is a double-end-capped surfactant of the fatty acid methyl ester ethoxylate type, and the other components of the anti-coking agent are benzyl alcohol and / or 1,4-benzenedimethanol; the mass ratio of the main component to other components in the anti-coking agent is 2-3:0.5; the anti-splashing agent is composed of polyisobutene-1000, 2,6-di-tert-butyl-4-methylphenol and polymethyl methacrylate in a mass ratio of 1.5-2.5:1:0.5-1.5; the antistatic agent is one or more of alkyl phosphate potassium salt, cocamidopropyl betaine and alkyl sulfonate salt.

2. The environmentally friendly oil preparation for polyester POY filament according to claim 1, characterized in that: The content of the regulating stabilizer in the oil does not exceed 4wt%.

3. The environmentally friendly oil preparation for polyester POY filament according to claim 1, characterized in that: The oil further contains 0.5-2 wt% of a sizing agent; the sizing agent is fatty acid triethanolamine salt and / or oleic acid triethanolamine salt.

4. The environmentally friendly oil preparation for polyester POY filament according to claim 1, characterized in that: The oil further contains 2-5 wt% of a lubricant, 1-2 wt% of an emulsifier, 1-3 wt% of a penetrant and 80-90 wt% of water.

5. A method for preparing an environmentally friendly oil agent for polyester POY filament according to any one of claims 1 to 4, characterized in that: Add the components into the reactor in proportion, stir evenly, react at 40-60°C for 0.5-1h, send to a precipitation kettle for natural cooling and then filter to obtain the environmentally friendly oil agent for polyester POY filament.