Spinning oil composition, spinning oil and method for producing and using the same

Abstract

The present application relates to the technical field of high polymer material preparation, and particularly relates to a spinning oil composition, a spinning oil and a preparation method and application thereof; the composition comprises, in terms of weight parts, polyoxyethylene fatty acid ester: 20-30 parts; hydrogenated castor oil polyoxyethylene ether: 8-10 parts; alkyl silicone oil: 25-35 parts; polyether silicone oil: 8-15 parts; alkyl polyoxyethylene ether phosphate ester salt: 5-8 parts; alkyl thiosuccinate: 7-10 parts; dodecyl phosphate ester salt: 7-10 parts; ethylene oxide-propylene oxide block copolymer: 3-6 parts; polyoxyethylene quaternary ammonium salt: 5-8 parts; penetrating agent: 2-4 parts. The spinning oil can significantly improve the bundling property, antistatic property and emulsifying property of polyethylene fiber spinning, thereby effectively solving a series of problems of polyethylene fiber in the spinning process, including poor bundling property, high static voltage and easy winding, etc.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high polymer material preparation, and particularly relates to a spinning oil composition, a spinning oil and a preparation method and application thereof. BACKGROUND

[0002] Since the ultra-high molecular weight polyethylene fiber (UHMWPE) fiber emerged in the early 1980s, it has become a new generation of high-strength and high-modulus fiber. People praise it as the third generation of high-strength and high-modulus fiber after carbon fiber and aramid fiber. Its light weight, high strength and high modulus have attracted people's attention. Moreover, this fiber has won the favor of the public with its excellent performance such as low temperature resistance, wear resistance, ultraviolet radiation resistance, low friction coefficient, impact resistance, cutting resistance, low dielectric constant, high specific energy absorption and high electromagnetic wave transmittance.

[0003] However, although the UHMWPE fiber has many excellent performances, the high specific resistance of the UHMWPE fiber makes it prone to static electricity in the spinning process, which has been a big problem in the spinning process of high-performance polyethylene fiber. Excessive static electricity can easily cause the surface hairiness of the fiber to increase during processing, and even the skin roller and roller will be wound at the drawing stage, resulting in drawing breakage and pipe blockage. In addition, the skin roller is also prone to winding at the roving stage, and the surface hairiness of the roving is also increased. These conditions will make the spinning of high-performance UHMWPE fiber difficult to continue.

[0004] In the existing technology, the polyethylene fiber needs to be sprayed and treated before spinning, but this is not conducive to continuous industrial production. In addition, ordinary high-speed spinning oil cannot meet the process requirements of ultra-fine fibers, and a series of problems such as yarn dispersion, loose yarn and broken ends will occur, which seriously affects the spinnability and product grade yield. Therefore, the oil agent has become a major obstacle to the industrialized production of UHMWPE high-speed spinning. Uniform oiling is the premise of stable performance of the oil agent. Whether the oil agent can be evenly attached to the surface of each fiber directly affects the friction behavior between the yarn and the contact parts. If the oiling is uneven or too little, it will cause the spinning tension to fluctuate, and even cause loose yarn and broken ends. Especially for ultra-fine UHMWPE fibers, due to their large specific surface, large number of fibers, and low strength, uniform oiling is particularly important. Uniform oiling is closely related to the wetting performance and surface tension of the oil agent. Generally, the faster the wetting speed and the lower the surface tension, the more uniform the oiling. The wetting performance of the oil agent is mainly determined by the structure of the polyether monomer used, and the type of polyether terminal starting group and the ether chain structure also have a significant effect on the wetting ability.

[0005] UHMWPE high-speed spinning fiber is prone to damage during processing due to its thinness, high processing speed, and multiple process characteristics. Considering uniform oiling, the effect of oil on fiber structure and mechanical properties, and the influence of friction disc, as well as biodegradability, oil film strength, and other issues, the oil formulation was carefully designed from the relationship between oil structure and performance, and a stable oil formulation was developed through small-scale and pilot-scale tests. This innovation not only solves the spinnability problem of UHMWPE high-speed spinning, but also improves the first-class fiber yield. It also conducts in-depth research on the basic problems in the development and production of domestic chemical fiber oil, which has a positive significance for improving the research level of domestic chemical fiber oil. With the development of spinning process from low speed to high speed, the increase of spinning speed has made higher demands on the oil. In order to meet this demand, it is particularly important to develop high-quality spinning oil that is compatible with high-speed spinning process. According to the special requirements of high-speed spinning process for oil, the problems of bundling, antistatic, friction characteristics and other issues were solved, and the oil specially designed for UHMWPE fiber high-speed spinning was developed. This oil makes the first-class fiber quality rate as high as 97%, significantly improving the quality and production efficiency of the fiber.

[0006] CN114232139A discloses a carbon fiber oil for dry-jet wet spinning and a preparation method thereof. The oil mainly consists of amino-modified silicone oil, epoxy-modified silicone oil, polyether-modified silicone oil, ternary copolymer silicone oil, composite emulsifier and deionized water, etc. It is an oil-in-water type water-based microemulsion with a particle size of 50-500 nm, which can better match the dry-jet wet spinning process, uniformly oil the original yarn in a short time, and is not easy to stick to the roller during drying and densification and steam drawing, etc. It has good spinning process performance, and is not sticky during pre-oxidation and low-temperature carbonization, with less hairiness, high carbonization strength and small dispersion coefficient. The method has the characteristics of green environmental protection, good safety, high production efficiency and stable quality, and is suitable for large-scale polyacrylonitrile dry-jet wet spinning process, but has not been industrialized and applied.

[0007] CN115928443A discloses a carbon fiber oil, which comprises quaternary ammonium modified silicone oil, amino modified silicone oil, epoxy modified silicone oil, emulsifier, organic solvent, additive, and deionized water. The mass fraction of each component is as follows: quaternary ammonium modified silicone oil 3-14 parts, amino modified silicone oil 5-33 parts, epoxy modified silicone oil 3-14 parts, emulsifier+organic solvent 5-15 parts, additive 1-5 parts, and deionized water 60-70 parts. The quaternary ammonium modified silicone oil includes one or more of hydroxyl, polyether modified quaternary ammonium silicone oil, alkoxy modified quaternary ammonium silicone oil, and aminoethyl aminopropyl modified quaternary ammonium silicone oil. The carbon fiber coated with the oil has high tensile strength, low impurity content, good fibrillation, and less hair during production and use, but is currently only suitable for carbon fiber.

[0008] CN116103790A discloses a heat-resistant, high-compatibility carbon fiber precursor oil and a preparation method thereof. It comprises modified siloxane, emulsifier, non-ionic antistatic agent, antioxidant and deionized water; the modified siloxane is prepared by modifying polyvinyl polysiloxane with mercaptoethanolamine ester. The modified siloxane is grafted with carboxyl, amino and hydroxyl groups through thiol and double bond addition reaction, has strong heat resistance, and reduces the content of silicon to have high compatibility. The carbon fiber precursor oil prepared from the modified siloxane has heat resistance, greatly reduces broken filaments and wool during pre-oxidation, and has high compatibility, which can enhance the adhesion ability and uniformity of polyacrylonitrile fiber, and prepare carbon fiber with higher linear density and bundle strength, but is currently only suitable for carbon fiber.

[0009] CN114214841A discloses a heat-resistant antistatic carbon fiber oil and its preparation and application, aiming to solve the technical problems of poor antistatic effect, poor fiber protection effect at high temperature, and large amount of fiber wool of existing carbon fiber oil. A heat-resistant antistatic carbon fiber oil is prepared by adding a substance A with ester group and ether functional group, a surfactant, an ether-based silicone oil, and an emulsifying aid, etc. The heat-resistant antistatic carbon fiber oil has high heat resistance, lubricity and water solubility. The compound is a liquid below 300°C and a flexible film at 350°C, and can well protect carbon fiber during pre-oxidation and low-temperature carbonization, solving the technical problems of easy gelation, roller sticking, and many wool and difficult to consider antistatic performance of existing carbon fiber oil products, but is not suitable for UHMWPE fiber.

[0010] CN115992402A discloses a wear-resistant vinylon fiber oil and a preparation method thereof. A wear-resistant vinylon fiber oil, in terms of weight fraction, includes fatty alcohol polyoxyethylene ether 7-12 parts, polyethylene glycol 400 monostearate 11-13 parts, xylitol fatty acid ester 5-7 parts, L-44 polyether 5-10 parts, castor oil polyoxyethylene ether 5-10 parts, and isotridecanol phosphate 18-23 parts. The oil solves the technical problem that the performance of wear-resistant vinylon fiber does not meet the application requirements due to the lack of special oil, can be applied to the practical operation of wear-resistant vinylon fiber processing and production, can eliminate the influence of static electricity, and ensure the smooth process of spinning production using wear-resistant vinylon fiber. But it is currently only suitable for vinylon fiber. SUMMARY

[0011] The present application aims to overcome the inherent characteristics of the prior art, such as large internal stress, large resistance, poor bundle collection, large elasticity, large static electricity during processing, and easy sticking to the roller, and provides a spinning oil composition, a spinning oil, and a preparation method and application thereof. The spinning oil described in the present application is used for spinning of ultra-high molecular weight polyethylene fibers, has more excellent spinning process control effect and fiber product performance, and improves the performance of subsequent fiber products.

[0012] To achieve the above-mentioned purpose, the present application provides a spinning oil composition in parts by weight, which comprises:

[0013] Polyoxyethylene fatty acid ester: 20-30 parts;

[0014] Hydrogenated castor oil polyoxyethylene ether: 8-10 parts;

[0015] Alkyl silicone oil: 25-35 parts;

[0016] Polyether silicone oil: 8-15 parts;

[0017] Alkyl polyoxyethylene ether phosphate ester salt: 5-8 parts;

[0018] Alkyl thiosuccinate: 7-10 parts;

[0019] Dodecyl phosphate ester salt: 7-10 parts;

[0020] Ethylene oxide-propylene oxide block copolymer: 3-6 parts;

[0021] Polyoxyethylene quaternary ammonium salt: 5-8 parts;

[0022] Penetrating agent: 2-4 parts.

[0023] The second aspect of the present application provides a preparation method of a spinning oil, which comprises mixing the components of the aforementioned composition.

[0024] The third aspect of the present application provides a spinning oil prepared by the preparation method described in the present application.

[0025] The fourth aspect of the present application provides an application of the spinning oil described in the present application in polyethylene fiber spinning.

[0026] The spinning oil described in the present application can significantly improve the bundle collection, antistatic property, and emulsification of polyethylene fiber spinning, thereby effectively solving a series of problems of polyethylene fibers during the spinning process, including poor bundle collection, large static voltage, and easy winding on the roller.

[0027] The spinning oil agent is verified by 30 tons / year ultra-high molecular weight polyethylene spinning production line, and the results show that the bundle property, stretching condition and molding of the ultra-high molecular weight polyethylene fiber using the spinning oil agent are good, the bundle gloss is bright, the odor of the oil agent is small, and the oil agent impurity deposition and color master batch pigment precipitation phenomenon do not occur on the post-spinning equipment, and the product quality can meet the use requirements.

[0028] Successful application of the technology not only provides strong guarantee for production of the ultra-high molecular weight polyethylene fiber, but also fills the gap in the market.

[0029] The significant effect of the present application is that:

[0030] First, the spinning and spinning properties and antistatic properties of the ultra-high molecular weight polyethylene fiber are improved, the disturbance in the spinning process is reduced, and the tensile properties of the fiber are ensured:

[0031] Second, the pre-stretched fiber is fully surface-wetted to improve the bundle property and antistatic property, reduce the friction with metal and other contact materials, reduce the lint, and reduce the (hot) roll winding.

[0032] Third, the flexibility of the ultra-high molecular weight fiber fabric is improved, and the subsequent product processing is facilitated. DETAILED DESCRIPTION

[0033] The endpoints of the ranges and any values disclosed herein are not limited to the precise values recited as the exact dimensions are not critical to the present application. Any numerical value, however, can be expressed as a range to include any and all subranges therebetween. The ranges of values disclosed herein are therefore to be understood to include any and all subranges therebetween, and the endpoints of the ranges of values listed are not to be understood as limited to the precise values stated.

[0034] It should be noted that in the present application, the specific meanings of each term are as follows.

[0035] Polyoxyethylene fatty acid ester: the polyoxyethylene fatty acid ester is a polymer widely available on the market.

[0036] Hydrogenated castor oil polyoxyethylene ether: the hydrogenated castor oil polyoxyethylene ether is a polymer widely available on the market, which is a yellow viscous liquid, can resist hard water, acid, alkali and inorganic salt, and is used for emulsifying and dissolving oil and other water-insoluble substances.

[0037] Alkyl silicone oil: the alkyl silicone oil is a compound widely available on the market.

[0038] Polyether silicone oil: the polyether silicone oil is a polymer widely available on the market.

[0039] Alkyl polyoxyethylene ether phosphate salt: The alkyl polyoxyethylene ether phosphate salt is a polymer widely available on the market.

[0040] Alkyl thiosuccinate salt: The alkyl thiosuccinate salt is a commercially available anionic surfactant, which has the characteristics of rapid, uniform penetration, good wetting, emulsification and foaming.

[0041] Ethylene oxide-propylene oxide block copolymer: The ethylene oxide-propylene oxide block copolymer is a nonionic surfactant.

[0042] Polyoxyethylene quaternary ammonium salt: The polyoxyethylene quaternary ammonium salt is a polymer surfactant widely available on the market.

[0043] Penetrant: The penetrant is a compound widely available on the market. Low-foaming penetrant SF is used, which mainly contains fatty alcohol polyoxyalkyl ether, pH value: 5-7 (1% aqueous solution), penetration: ≤70 seconds.

[0044] The first aspect of the present application provides a spinning oil composition, in parts by weight, the composition comprising:

[0045] Polyoxyethylene fatty acid ester: 20-30 parts;

[0046] Hydrogenated castor oil polyoxyethylene ether: 8-10 parts;

[0047] Alkyl silicone oil: 25-35 parts;

[0048] Polyether silicone oil: 8-15 parts;

[0049] Alkyl polyoxyethylene ether phosphate salt: 5-8 parts;

[0050] Alkyl thiosuccinate salt: 7-10 parts;

[0051] Dodecyl phosphate salt: 7-10 parts;

[0052] Ethylene oxide-propylene oxide block copolymer: 3-6 parts;

[0053] Polyoxyethylene quaternary ammonium salt: 5-8 parts;

[0054] Penetrant: 2-4 parts.

[0055] According to a preferred embodiment of the present application, the polyoxyethylene fatty acid ester has a structural formula as shown in formula (1),

[0056]

[0057] In formula (1), R1 is a C1-C20 saturated or unsaturated aliphatic group, and m ranges from 5 to 500.

[0058] According to a preferred embodiment of the present application, the polyoxyethylene in the hydrogenated castor oil polyoxyethylene ether has an addition number of 5-100.

[0059] According to a preferred embodiment of the present application, the alkyl polyoxyethylene ether phosphate salt has a structure as shown in formula (2),

[0060]

[0061] R2 is a C1-C30 saturated or unsaturated aliphatic group, n ranges from 5 to 1000, and M is an alkali metal, an amine group or an ammonium group.

[0062] According to a preferred embodiment of the present application, the alkyl group in the alkyl sulfosuccinate salt is a C1-20 linear or branched alkyl group.

[0063] According to a preferred embodiment of the present application, the dodecyl phosphate salt is a dodecyl phosphate potassium salt and / or a dodecyl phosphate sodium salt.

[0064] According to a preferred embodiment of the present application, the molecular weight of the ethylene oxide-propylene oxide block copolymer is 400-8000 g / mol, the molar proportion of ethylene oxide in the ethylene oxide-propylene oxide block copolymer is 10%-50%, and the total polymerization degree is 10-200.

[0065] According to a preferred embodiment of the present application, the polyoxyethylene quaternary ammonium salt is an alkylphenol polyoxyethylene quaternary ammonium salt.

[0066] According to a preferred embodiment of the present application, the polyoxyethylene fatty acid ester has a structure as shown in formula (1), R1 is a C8-C18 saturated or unsaturated aliphatic group, and m ranges from 100 to 400.

[0067] According to a preferred embodiment of the present application, the viscosity of the alkyl silicone oil at 25°C is 500-1200 cst, and preferably the alkyl silicone oil is a long-chain alkyl silicone oil.

[0068] The second aspect of the present application provides a preparation method of a spinning finish, which comprises mixing the components of the composition described above.

[0069] According to a preferred embodiment of the present application, the preparation method of the spinning finish comprises:

[0070] S1, mixing the polyoxyethylene fatty acid ester and the hydrogenated castor oil polyoxyethylene ether to obtain a mixture 1;

[0071] S2, mixing the alkyl silicone oil, the polyether silicone oil and the mixture 1 to obtain a mixture 2;

[0072] S3, mixing alkyl polyoxyethylene ether phosphate salt, alkyl thiosuccinate salt, dodecyl phosphate salt with mixture 2 to obtain mixture 3;

[0073] S4, mixing polyoxyethylene quaternary ammonium salt, penetrant with mixture 3 to obtain mixture 4;

[0074] S5, mixing mixture 4 with ethylene oxide-propylene oxide copolymer to obtain the spinning oil.

[0075] According to a preferred embodiment of the present application, the first mixing condition comprises: temperature 20-60℃, mixing time 5-30min, rotation speed 200-1800rpm;

[0076] The second mixing condition comprises: temperature 20-50℃, mixing time 5-40min, rotation speed 200-1800rpm;

[0077] The third mixing condition comprises: temperature 20-80℃, mixing time 5-60min, rotation speed 200-2000rpm;

[0078] The fourth mixing condition comprises: temperature 20-80℃, mixing time 10-60min, rotation speed 200-2000rpm;

[0079] The fifth mixing condition comprises: temperature 20-60℃, mixing time 20-40min, rotation speed 200-2000rpm.

[0080] According to a preferred embodiment of the present application, the preparation method of the spinning oil further comprises:

[0081] Mixing the spinning oil with water to prepare an aqueous emulsion; preferably, the mass content of the spinning oil is 3-15wt% based on the total weight of the aqueous emulsion.

[0082] The present application provides a spinning oil prepared by the preparation method.

[0083] The present application provides a spinning oil prepared by the preparation method.

[0084] The present application provides a spinning oil prepared by the preparation method.

[0085] The use characteristics of the spinning oil include: uniform oiling, less splashing, strong adhesion, smooth high-speed spinning production, good spinnability, excellent fiber quality, smooth winding and unwinding, and the like. The spinning oil can meet the process requirements of unwinding, stretching, winding and false twisting in the fiber processing process, the false twisting tension is uniform, the spinning process is stable, the fiber has less broken ends and the first-class product rate is obviously improved.

[0086] The spinning oil has a wetting time of 2s for the ultra-high molecular weight polyethylene fiber, a surface tension of 2.86*10 N / m, and excellent wetting performance for the ultra-high molecular weight polyethylene fiber.

[0087] According to another aspect of the present application, a preparation method of the ultra-high molecular weight polyethylene fiber oil is provided, and the method comprises the following steps:

[0088] S1: polyoxyethylene fatty acid ester and polyoxyethylene castor oil are added to a stirrer, and are stirred at a constant temperature of 50 DEG C at a high speed for 10 minutes, and a rotating speed is 1600 rpm, to obtain a mixture 1;

[0089] S2: alkyl silicone oil and polyether silicone oil are added to the mixture 1 in step S1, and are stirred at a rotating speed of 1600 rpm for 10 minutes, to obtain a mixture 2;

[0090] S3: alkyl polyoxyethylene ether phosphate, alkyl thiosuccinate and dodecyl phosphate potassium salt are added to the mixture 2 in step S2, and are stirred at a rotating speed of 1600 rpm for 10 minutes, to obtain a mixture 3, and after the mixture 3 system becomes viscous, the stirring rotating speed is reduced to 800 rpm;

[0091] S4: polyoxyethylene quaternary ammonium salt and penetrant (SF) are slowly added to the mixture 3 in step S3, and are stirred for 10 minutes, and then the rotating speed is increased to 1600 rpm, and the stirring is continued for 10 minutes, to obtain a mixture 4;

[0092] S5: ethylene oxide-propylene oxide copolymer is added to the mixture 4 in step S4, and is stirred at a rotating speed of 1600 rpm for 30 minutes, to obtain the ultra-high molecular weight polyethylene fiber oil. The oil is stored for standby use.

[0093] Based on the oil, the oil can be directly used, or can be configured as a water emulsion for use. The oil content of the fiber (wound yarn) is 3%±0.5%. When configured as a water emulsion, the emulsion concentration is 15%±3%, the water for preparation is soft water with a hardness of less than 1 pg / g, and the pH value of the acidity and alkalinity is 6.5-7.5. The measured components are slowly added to the soft water according to the emulsion concentration requirement, and the stirring is continued for 10-30 minutes, and the stirring speed is 1500-2000 rpm.

[0094] For a further understanding of the present application, preferred embodiments thereof will be described in conjunction with examples, it being understood, however, that this description is made only by way of further illustration and not as a limitation on the claimed application.

[0095] In order to more clearly illustrate the application, the following examples are given, but the application can be implemented without being limited to the scope of the examples.

[0096] The spinning oil of the examples and the comparative examples is used for spraying and soaking treatment before the pre-spinning and drawing stage of the ultra-high molecular weight polyethylene fiber is wound. The specific method is as follows: the prepared spinning oil is added to the sizing tank of the oiling machine, the unsized ultra-high molecular weight polyethylene fiber is immersed in the spinning oil and passes through the sizing tank of the oiling machine at a speed of 0.1 m / min-200 m / min, the oiling time is 2 s-2 min, the excess oil of the fiber out of the tank is squeezed dry, and then the oiled carbon fiber is dried at 20℃-180℃ for 0.5-48 h.

[0097] The fiber performance detection index and method are as follows:

[0098] Breaking strength: an Instron 1122 universal material testing machine is used: the prepared fiber under different conditions is stretched, the environmental control is carried out according to the requirements of the standard test method for reinforcing materials, the temperature is 23±2℃, the relative humidity is (50±10)%, the stretching speed is 250 mm / min, the clamps are the rope test clamps produced by the INSTRON company, which can ensure that the sample does not slip during the test, the clamping distance is 500 mm. The fiber is stretched until it is broken, and the result is automatically obtained by the instrument. The average test is carried out 10 times for each can, the average value is taken, and the breaking strength result is given by the software;

[0099] Breaking elongation: the detection method is the same as above, and the result is given by the software;

[0100] Modulus: the detection method is the same as above, and the result is given by the software;

[0101] Elongation coefficient of variation: the detection method is the same as above, and the result is given by the software;

[0102] Strength coefficient of variation: the detection method is the same as above, and the result is given by the software.

[0103] In the following examples, the preparation method of the spinning oil includes:

[0104] S1, polyoxyethylene fatty acid ester and hydrogenated castor oil polyoxyethylene ether are added to a stirrer, high-speed stirring is carried out at 50℃ constant temperature for 10 minutes, the speed is 1600 rpm, and mixture 1 is obtained;

[0105] S2, add alkyl silicone oil, polyether silicone oil into the mixture 1 in step S1, stir at 1600 rpm for 10 minutes to obtain mixture 2;

[0106] S3, add alkyl polyoxyethylene ether phosphate salt, alkyl thiosuccinate, dodecyl phosphate potassium salt into the mixture 2 in step S2, stir at 1600 rpm for 10 minutes to obtain mixture 3, and then reduce the stirring speed to 800 rpm after the mixture 3 system becomes viscous;

[0107] S4, slowly add polyoxyethylene quaternary ammonium salt, penetrant (SF) into the mixture 3 in step S3, stir for 10 minutes, then increase the stirring speed to 1600 rpm and continue to stir for 10 minutes to obtain mixture 4;

[0108] S5, add ethylene oxide-propylene oxide copolymer into the mixture 4 in step S4, stir at 1600 rpm for 30 minutes to obtain the spinning oil.

[0109] In the following examples,

[0110] Polyoxyethylene fatty acid ester is purchased from Rong Reagent Co., Ltd., with the model number R001149.

[0111] Hydrogenated castor oil polyoxyethylene ether is purchased from Shanghai Mclinn Biotech Co., Ltd., with the model number E873767.

[0112] Alkyl silicone oil is purchased from Shanghai Mclinn Biotech Co., Ltd., with the model number L875454.

[0113] Polyether silicone oil is purchased from Guangdong Wengjiang Chemical Reagent Co., Ltd., with the model number PB91284.

[0114] Alkyl polyoxyethylene ether phosphate salt is purchased from Haian Petroleum Chemical Factory in Jiangsu Province, with the model number Phosphate E1310PK.

[0115] Alkyl thiosuccinate is purchased from Haian Petroleum Chemical Factory in Jiangsu Province, with the model number Fast T, also known as sodium dioctyl sulfosuccinate or dioctyl sodium sulfosuccinate.

[0116] Dodecyl phosphate salt is purchased from Guangdong Wengjiang Chemical Reagent Co., Ltd., with the model number PB10662.

[0117] Ethylene oxide-propylene oxide block copolymer is purchased from Merer Reagent Co., Ltd., with the model number GEL-DBP-534.

[0118] Polyoxyethylene quaternary ammonium salt is purchased from Xiya Reagent, with the model number A16677.

[0119] Penetrant is purchased from Haian Petroleum Chemical Factory in Jiangsu Province, with the model number Low-foaming penetrant SF.

[0120] Example 1

[0121] Polyoxyethylene fatty acid ester: 25 parts;

[0122] Hydrogenated castor oil polyoxyethylene ether: 9 parts;

[0123] Alkyl silicone oil: 30 parts;

[0124] Polyether silicone oil: 10 parts;

[0125] Alkyl polyoxyethylene ether phosphate ester salt: 7 parts;

[0126] Alkyl thiosuccinate salt: 9 parts;

[0127] Potassium salt of dodecyl phosphate ester: 9 parts;

[0128] Oxirane-propylene oxide block copolymer: 5 parts;

[0129] Polyoxyethylene quaternary ammonium salt: 7 parts;

[0130] Penetrant (SF): 3 parts;

[0131] The results of the fiber property test are shown in Table 1.

[0132] Table 1

[0133]

[0134] Example 2

[0135] The oil agent spray immersion treatment was performed before the winding of the pre-spinning stretch stage of the ultra-high molecular weight polyethylene fiber.

[0136] Polyoxyethylene fatty acid ester: 24 parts;

[0137] Hydrogenated castor oil polyoxyethylene ether: 10 parts;

[0138] Alkyl silicone oil: 25 parts;

[0139] Polyether silicone oil: 15 parts;

[0140] Alkyl polyoxyethylene ether phosphate ester salt: 8 parts;

[0141] Alkyl thiosuccinate salt: 10 parts;

[0142] Potassium salt of dodecyl phosphate ester: 7 parts;

[0143] Oxirane-propylene oxide block copolymer: 6 parts; polyoxyethylene quaternary ammonium salt: 5 parts;

[0144] Penetrant (SF): 4 parts.

[0145] The results of the fiber performance test are shown in Table 2.

[0146] Table 2

[0147]

[0148] Example 3

[0149] Polyoxyethylene fatty acid ester: 30 parts;

[0150] Hydrogenated castor oil polyoxyethylene ether: 8 parts;

[0151] Alkyl silicone oil: 35 parts;

[0152] Polyether silicone oil: 8 parts;

[0153] Alkyl polyoxyethylene ether phosphate ester salt: 5 parts;

[0154] Alkyl thiosuccinate salt: 7 parts;

[0155] Dodecyl phosphate potassium salt: 10 parts;

[0156] Oxirane-propylene oxide block copolymer: 3 parts; polyoxyethylene quaternary ammonium salt: 8 parts;

[0157] Penetrant (SF): 2 parts;

[0158] The results of the fiber performance test are shown in Table 3.

[0159] Table 3

[0160]

[0161]

[0162] Comparative Example 1

[0163] The fiber was not subjected to oil spraying and soaking treatment before being wound in the pre-spinning and drawing stage of the ultra-high molecular weight polyethylene fiber.

[0164] The results of the fiber performance test are shown in Table 4.

[0165] Table 4

[0166]

[0167] From the above examples and comparative examples, it can be clearly seen that the performance indicators of the ultra-high molecular weight polyethylene fiber produced by the method all reach the advanced level of other ultra-high molecular weight polyethylene fiber materials.

[0168] The preferred embodiments of the present application are described in detail above, but the present application is not limited thereto. Within the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, including that each technical feature is combined in any other suitable manner. These simple modifications and combinations should also be considered as disclosed by the present application and fall within the protection scope of the present application.

Claims

1. A spin finish composition for use in the spinning of ultra-high molecular weight polyethylene fibers, characterized in that, The composition comprises, by weight: polyoxyethylene fatty acid ester: 20-30 parts; hydrogenated castor oil polyoxyethylene ether: 8-10 parts; alkyl silicone oil: 25-35 parts; polyether silicone oil: 8-15 parts; alkyl polyoxyethylene ether phosphate salt: 5-8 parts; alkyl thiosuccinate salt: 7-10 parts; dodecyl phosphate salt: 7-10 parts; ethylene oxide-propylene oxide block copolymer: 3-6 parts; polyoxyethylene quaternary ammonium salt: 5-8 parts; penetrant: 2-4 parts.

2. The spin finish composition according to claim 1, wherein, the polyoxyethylene fatty acid ester has a structure represented by formula (1), （1）， in formula (1), R1 is a C1-C20 saturated or unsaturated aliphatic group, and m ranges from 5 to 500; and / or in the hydrogenated castor oil polyoxyethylene ether, the addition number of polyoxyethylene ranges from 5 to 100; and / or the alkyl polyoxyethylene ether phosphate salt has a structure represented by formula (2), （2）， R2 is a C1-C30 saturated or unsaturated aliphatic group, n ranges from 5 to 1000, and M is an alkali metal, an amine group or an ammonium group; and / or in the alkyl thiosuccinate salt, the alkyl group is a C1-20 linear or branched alkyl group; and / or the dodecyl phosphate salt is a potassium dodecyl phosphate salt and / or a sodium dodecyl phosphate salt; and / or the ethylene oxide-propylene oxide block copolymer has a molecular weight of 400-8000 g / mol, and in the ethylene oxide-propylene oxide block copolymer, the mole percentage of ethylene oxide ranges from 10% to 50%, and the total polymerization degree ranges from 10 to 200; and / or the polyoxyethylene quaternary ammonium salt is an alkylphenol polyoxyethylene quaternary ammonium salt.

3. The spin finish composition according to claim 2, wherein, the polyoxyethylene fatty acid ester has a structure represented by formula (1), R1 is a C8-C18 saturated or unsaturated aliphatic group, and m ranges from 100 to 400; and / or the alkyl silicone oil has a viscosity of 500-1200 cst at 25°C.

4. The spin finish composition of claim 3 wherein, the alkyl silicone oil is a long-chain alkyl silicone oil.

5. A method for preparing a spin finish for spinning of ultra-high molecular weight polyethylene fibers, characterized by, The method comprises mixing the components of the composition according to any one of claims 1-4.

6. The production method according to claim 5, wherein The preparation method of the spin finish comprises: S1, first mixing the polyoxyethylene fatty acid ester and the hydrogenated castor oil polyoxyethylene ether to obtain a mixture 1; S2, second mixing the alkyl silicone oil, the polyether silicone oil and the mixture 1 to obtain a mixture 2; S3, third mixing the alkyl polyoxyethylene ether phosphate salt, the alkyl thiosuccinate salt and the dodecyl phosphate salt with the mixture 2 to obtain a mixture 3; S4, fourth mixing the polyoxyethylene quaternary ammonium salt and the penetrant with the mixture 3 to obtain a mixture 4; S5, fifth mixing the mixture 4 and the ethylene oxide-propylene oxide copolymer to obtain the spin finish.

7. The preparation method according to claim 6, wherein, the first mixing conditions comprise a temperature of 20-60°C, a mixing time of 5-30 min and a rotation speed of 200-1800 rpm; the second mixing conditions comprise a temperature of 20-50°C, a mixing time of 5-40 min and a rotation speed of 200-1800 rpm; The third mixing condition includes: temperature 20-80℃, mixing time 5-60min, and rotation speed 200-2000rpm; The fourth mixing condition includes: temperature 20-80℃, mixing time 10-60min, and rotation speed 200-2000rpm; The fifth mixing condition includes: temperature 20-60℃, mixing time 20-40min, and rotation speed 200-2000rpm.

8. The production method according to claim 5, wherein The preparation method of the spinning finish further comprises: The spinning finish is mixed with water to prepare an aqueous emulsion.

9. The production method according to claim 8, wherein The mass content of the spinning finish is 3-15wt% based on the total weight of the aqueous emulsion.

10. The spinning finish for the spinning of ultra-high molecular weight polyethylene fibers prepared by the preparation method of any one of claims 5-9.

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