CN118563457A - Ultra-high molecular weight polyethylene fiber spinning oil and preparation method thereof - Google Patents

Abstract

The invention discloses an ultra-high molecular weight polyethylene fiber spinning oil and a preparation method thereof, belonging to the technical field of oil used in the spinning process of synthetic fibers. The invention uses smoothing agent, emulsifying agent, bundling agent, antiseptic bactericide, the transverse dimension is 4-8 μm, the carbon-oxygen ratio is (20-30): and 1, preparing the spinning oil for the ultra-high molecular weight polyethylene fiber by taking the monolayer or multilayer graphene as a raw material. The graphene not only can play a role in resisting dripping, but also can improve the antistatic property of the spinning oil by adding a small amount due to the excellent conductive property. By adjusting the carbon-oxygen ratio and the size of the surface of the graphene, the dispersibility of the graphene in the emulsion is improved, the mechanical property of the graphene can be improved, the strength and the wetting speed of an oil film are further improved, and the oil film cannot be broken. The oiling agent disclosed by the invention is suitable for mass production, the product quality is stable, and the performance of a fiber finished product can be improved.

Description

Ultra-high molecular weight polyethylene fiber spinning oil and preparation method thereof

Technical Field

The invention relates to the technical field of oil agents used in a synthetic fiber spinning process, and in particular to an ultra-high molecular weight polyethylene fiber spinning oil agent and a preparation method thereof.

Background Art

As an intermediate medium in the process of converting textile raw materials into textiles, spinning oil ensures the smooth production of chemical fibers. Although the adhesion rate of oil on the fiber does not exceed 0.3%-0.5%, it plays an important role in the fiber production, spinning and textile processes. At the same time, with the development of global high-speed spinning equipment and new fiber technologies, oil has become an indispensable and important part of fiber production technology. In the fiber spinning process, the use of chemical fiber oil is indispensable. It can adjust the friction characteristics of the fiber, prevent or eliminate static electricity accumulation, and give the fiber smoothness and softness, so that the chemical fiber can smoothly pass through the spinning, stretching, stretching spinning, weaving and other processes, ensuring the smooth production of chemical fibers. The oil on the fiber surface first contacts the production equipment. Under the conditions determined by the raw materials and production process, the preparation of the oil has a significant impact on the production cost, production efficiency and product quality. Therefore, its research and application are of great value.

Ultra-high molecular weight polyethylene fiber, also known as high-strength high-modulus polyethylene fiber, is a high-performance fiber that was successfully developed in the late 1970s and entered industrialization in the early 1980s. It is known as the world's three major high-tech fibers together with carbon fiber and aramid. It is a fiber spun from ultra-high molecular weight polyethylene with a molecular weight of 1 million to 5 million, and is one of the fibers with the highest specific strength and specific modulus in the world. The most striking features of ultra-high molecular weight polyethylene fiber are: light weight, high strength, and high modulus. In addition, the fiber also has excellent properties such as resistance to low temperature, impact, wear, and ultraviolet radiation, high specific energy absorption, low dielectric constant, high electromagnetic wave projection rate, low friction coefficient, and outstanding impact resistance and cutting resistance. Due to the many excellent properties of ultra-high molecular weight polyethylene fiber, the fiber has aroused great interest and attention from many countries as soon as it came out, and thus has shown great advantages in the high-performance fiber market, playing a pivotal role in modern warfare and aviation, aerospace, and national defense equipment.

Although ultra-high molecular weight polyethylene fiber has so many advantages, there are few spinning oils specifically used for ultra-high molecular weight polyethylene fiber. The reason is that, on the one hand, polyethylene is composed of neatly arranged highly crystalline bodies with few polar groups, which makes the conductivity extremely poor during the fiber spinning process and the static electricity cannot be discharged; on the other hand, since there are no hydrophilic groups in the long chain of polyethylene macromolecules, its moisture absorption rate is extremely small, which is not conducive to the wetting of spinning oils, resulting in low oil film strength and difficult spinning.

Summary of the invention

In view of the above problems, the present invention provides an ultra-high molecular weight polyethylene fiber spinning oil and a preparation method thereof that overcome the above problems. The prepared ultra-high molecular weight polyethylene fiber spinning oil has the characteristics of antistatic, high stability, good wettability, etc., can be well adsorbed on the fiber surface, oiled quickly, and at the same time form a good protective film, thereby giving the ultra-high molecular weight polyethylene fiber better friction properties, good antistatic and smooth properties.

The purpose of the present invention is achieved through the following technical solutions.

In a first aspect of the present invention, an ultra-high molecular weight polyethylene fiber spinning oil is provided, which comprises the following components in parts by weight:

50-60 parts of smoothing agent, 15-20 parts of emulsifier, 5-10 parts of bundling agent, 1-4 parts of preservative and bactericidal agent, 2-10 parts of graphene; wherein the graphene is single-layer or multi-layer graphene with a lateral size of 4-8μm; the carbon-oxygen ratio is (20-30):1.

In previous work, the inventor used graphene oxide as an additive for aramid spinning oil. However, graphene oxide has a large polarity and is not suitable for use as an additive for ultra-high molecular weight polyethylene fiber spinning oil. In addition, due to the presence of numerous defective groups, graphene oxide has low mechanical properties, which is not conducive to improving the strength of the oil film. The present invention uses graphene as an additive for ultra-high molecular weight polyethylene fiber spinning oil. Graphene has excellent wear resistance and can be used as an oil film enhancer to increase the strength of the oil film.

In order to improve the antistatic property of oil, the prior art mostly adopts adding various antistatic agents. Common antistatic agents include anionic antistatic agents and cationic antistatic agents. However, although these antistatic agents have good antistatic properties, they are easy to drip, and easily make metal rust and fiber yellowing. The present invention adopts graphene as an additive of ultra-high molecular weight polyethylene fiber spinning oil. Graphene is a lamellar structure, which can not only play an anti-dripping effect, but also because of its excellent conductive properties, a small amount of addition can improve the antistatic property of spinning oil. Publication No. CN108547149A, CN115434044A and other prior arts mention the use of graphene as an antistatic agent for spinning oil, but they are all modified to graphene, and the influence of the performance of graphene itself on the oil is not recognized, and its preparation process is complicated, and the improvement effect is limited. The inventors found that the use of graphene with a lateral size of 4-8 μm and a carbon-oxygen ratio of (20-30):1 can improve the antistatic and wetting properties of the spinning oil. The size of graphene cannot be too small, otherwise it will easily lead to graphene agglomeration and fail to prevent dripping; at the same time, if the size is too large, it will easily lead to graphene sedimentation and uneven dispersion. By adjusting the carbon-oxygen ratio on the graphene surface, it is not only beneficial to improve the dispersibility of graphene in the emulsion, but also to improve the mechanical properties of the graphene itself, thereby improving the oil film strength.

On the basis of the above scheme, the smoothing agent is selected from one or more of glycerol monooleate, glycerol dioleate, glycerol trioleate, and lauryl alcohol oleate. Further, the smoothing agent is a mixture of glycerol monooleate and glycerol trioleate. The multifunctional glyceride is used to improve the dispersion performance of graphene and the stability of the spinning oil emulsion.

On the basis of the above scheme, the emulsifier is selected from one or more of sorbitan monostearate, oleyl alcohol polyoxyethylene ether, isomeric tridecanol polyoxyethylene ether, fatty alcohol polyoxyethylene polyoxypropylene ether, sorbitan monooleate, dodecyl phosphate monoester, polyether-modified silicone, and acetylene glycol emulsifiers. Specifically, Yingchuang's 420, 440, 650 and other acetylene glycol emulsifiers can eliminate dynamic surface tension and improve emulsion stability. Polyether-modified silicone itself has better softness and antistatic properties, and is suitable for use as a fabric softener.

On the basis of the above scheme, the emulsifier is selected from a mixture of dodecyl phosphate monoester and sorbitan monooleate. The compounding of the emulsifier is beneficial to improving the dispersion stability of graphene and improving the antistatic performance of the spinning oil.

On the basis of the above scheme, the sizing agent is selected from one or more of hydrogenated castor oil polyoxyethylene ether, castor oil polyoxyethylene ether, polyoxyethylene laurate, and triethanolamine oleic acid soap.

Based on the above scheme, the preservative and bactericidal agent is sodium benzoate.

On the basis of the above scheme, the graphene is a single-layer graphene with a lateral size of 5-6 μm; the carbon-oxygen ratio is (24-26): 1. Graphene itself has strong lipophilicity. Using graphene as an additive for ultra-high molecular weight polyethylene fiber spinning oil can improve the wetting speed of the spinning oil. When the carbon-oxygen ratio of graphene is too large, the surface active groups are too few and the balance of the hydrophilic and hydrophobic interface cannot be formed, which affects the dispersion of graphene in the spinning oil; when the carbon-oxygen ratio is too small, there are too many active groups, which can easily lead to a decrease in the performance of the graphene itself and a decrease in affinity with polyethylene fibers, which is not conducive to improving the fiber performance.

Based on the above solution, the weight of the graphene is 4-8 parts.

The present invention also provides a method for preparing an ultra-high molecular weight polyethylene fiber spinning oil, comprising the following steps: weighing a smoothing agent, an emulsifier, a bundling agent, a preservative and bactericidal agent, and graphene according to a ratio; first adding the smoothing agent, the bundling agent, and the preservative and bactericidal agent into a reaction kettle, heating and stirring; then adding the emulsifier and graphene, and continuing to stir; cooling to room temperature, discharging, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil.

Based on the above scheme, the heating and stirring temperature is 50-70°C, the stirring time is 1-3h; and the continued stirring time is 1-2h.

Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

The present invention adopts single-layer or multi-layer graphene with a lateral size of 4-8 μm and a carbon-oxygen ratio of (20-30):1 as an additive for ultra-high molecular weight polyethylene fiber spinning oil. Graphene itself has a lamellar structure, which can not only play an anti-dripping role, but also improve the antistatic property of the spinning oil by adding a small amount due to its excellent conductive property. By adjusting the carbon-oxygen ratio and size of the graphene surface, it is not only beneficial to improve the dispersibility of the graphene in the emulsion, but also to improve the mechanical properties of the graphene itself, thereby improving the oil film strength. During the spinning process, the spinning oil has a fast wetting speed on the polyethylene fiber and has good wettability. The oil can be uniformly and quickly attached and spread on the fiber; the surface coverage is good, which can reduce frictional heating, thereby reducing polyethylene fiber yarn clusters or marks and defects; the oil film has high strength, can withstand friction pressure, will not cause oil film rupture, change the friction behavior of the fiber, avoid the occurrence of hair and broken ends during spinning, and cause wear of machine parts.

DETAILED DESCRIPTION

In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with general skills in the field to which the present invention belongs.

Example 1: Ultra-high molecular weight polyethylene fiber spinning oil, in parts by weight, comprises the following components:

50 parts of smoothing agent, 15 parts of emulsifier, 5 parts of bundling agent, 1 part of preservative and bactericidal agent, 4 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 4 μm; and the carbon-oxygen ratio is 20:1.

The lubricant is 20 parts of glycerol monooleate and 30 parts of glycerol dioleate; the emulsifier is 5 parts of sorbitan monooleate and 10 parts of isomeric tridecyl alcohol polyoxyethylene ether; the sizing agent is hydrogenated castor oil polyoxyethylene ether; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and the graphene, and continuing stirring; cooling to room temperature, discharging the material, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 52°C, the stirring time is 3 hours, and the stirring time is continued for 2 hours.

Example 2: Ultra-high molecular weight polyethylene fiber spinning oil, in parts by weight, comprises the following components:

60 parts of smoothing agent, 20 parts of emulsifier, 10 parts of bundling agent, 4 parts of preservative and bactericidal agent, 8 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 8 μm; and the carbon-oxygen ratio is 30:1.

The lubricant is 20 parts of glycerol dioleate, 10 parts of glycerol trioleate, and 30 parts of lauryl oleate; the emulsifier is 10 parts of sorbitan monooleate and 10 parts of sorbitan monostearate; the sizing agent is 2 parts of hydrogenated castor oil polyoxyethylene ether and 8 parts of castor oil polyoxyethylene ether; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and the graphene, and continuing stirring; cooling to room temperature, discharging, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 70°C, the stirring time is 1 hour, and the stirring time is continued for 1 hour.

Example 3: Ultra-high molecular weight polyethylene fiber spinning oil, in parts by weight, comprises the following components:

50 parts of smoothing agent, 20 parts of emulsifier, 5 parts of bundling agent, 4 parts of preservative and bactericidal agent, 8 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 4 μm; and a carbon-oxygen ratio of 30:1.

The lubricant is 20 parts of triolein and 30 parts of lauryl oleate; the emulsifier is sorbitan monooleate; the sizing agent is 2 parts of castor oil polyoxyethylene ether and 3 parts of polyoxyethylene laurate; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and the graphene, and continuing stirring; cooling to room temperature, discharging the material, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 55°C, the stirring time is 2h, and the stirring time is continued for 1.3h.

Example 4: Ultra-high molecular weight polyethylene fiber spinning oil, in parts by weight, comprises the following components:

60 parts of smoothing agent, 15 parts of emulsifier, 10 parts of bundling agent, 4 parts of preservative and bactericidal agent, 4 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 8 μm; and a carbon-oxygen ratio of 21:1.

The lubricant is 20 parts of glycerol monooleate and 40 parts of lauryl oleate; the emulsifier is 5 parts of sorbitan monooleate and 10 parts of Yingchuang 420; the sizing agent is 4 parts of polyoxyethylene laurate and 6 parts of triethanolamine oleic acid soap; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and the graphene, and continuing stirring; cooling to room temperature, discharging the material, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 65°C, the stirring time is 2 hours, and the stirring time is continued for 1.4 hours.

Example 5: Ultra-high molecular weight polyethylene fiber spinning oil, in parts by weight, comprises the following components:

55 parts of smoothing agent, 17 parts of emulsifier, 8 parts of bundling agent, 2 parts of preservative and bactericidal agent, and 6 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 6 μm; and the carbon-oxygen ratio is 25:1.

The lubricant is 20 parts of glycerol monooleate and 35 parts of glycerol trioleate; the emulsifier is 10 parts of sorbitan monooleate and 7 parts of dodecyl phosphate monoester; the sizing agent is 4 parts of polyoxyethylene laurate and 4 parts of triethanolamine oleic acid soap; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and graphene, and continuing stirring; cooling to room temperature, discharging, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 60°C, the stirring time is 2 hours, and the stirring time is continued for 1.4 hours.

Example 6: Ultra-high molecular weight polyethylene fiber spinning oil, in parts by weight, comprises the following components:

52 parts of smoothing agent, 17 parts of emulsifier, 6 parts of bundling agent, 3 parts of preservative and bactericidal agent, 5 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 5 μm; and the carbon-oxygen ratio is 27:1.

The lubricant is selected from glycerol monooleate; the emulsifier is 6 parts of oleyl alcohol polyoxyethylene ether and 11 parts of sorbitan monooleate; the sizing agent is 2 parts of castor oil polyoxyethylene ether and 4 parts of triethanolamine oleic acid soap; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and the graphene, and continuing stirring; cooling to room temperature, discharging, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 55° C., the stirring time is 2.3 hours, and the stirring time is continued for 1.8 hours.

Example 7: Ultra-high molecular weight polyethylene fiber spinning oil, in parts by weight, comprises the following components:

58 parts of smoothing agent, 16 parts of emulsifier, 9 parts of bundling agent, 1 part of preservative and bactericidal agent, and 7 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 7 μm; and a carbon-oxygen ratio of 22:1.

The lubricant is 29 parts of glycerol dioleate and 29 parts of lauryl oleate; the emulsifier is 7 parts of oleyl alcohol polyoxyethylene ether and 9 parts of isomeric tridecyl alcohol polyoxyethylene ether; the sizing agent is polyoxyethylene laurate; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and graphene, and continuing stirring; cooling to room temperature, discharging, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 66°C, the stirring time is 1.3h, and the stirring time is continued for 1.2h.

Example 8: Ultra-high molecular weight polyethylene fiber spinning oil, in parts by weight, comprises the following components:

57 parts of smoothing agent, 16 parts of emulsifier, 8 parts of bundling agent, 2 parts of preservative and bactericidal agent, 5 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 5 μm; and the carbon-oxygen ratio is 21:1.

The lubricant is glycerol monooleate; the emulsifier is 8 parts of isomeric tridecanol polyoxyethylene ether and 8 parts of dodecyl phosphate monoester; the sizing agent is 4 parts of lauric acid polyoxyethylene ester and 4 parts of triethanolamine oleic acid soap; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and the graphene, and continuing stirring; cooling to room temperature, discharging, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 58°C, the stirring time is 2.4h, and the stirring time is continued for 1.4h.

Example 9: Ultra-high molecular weight polyethylene fiber spinning oil, in parts by weight, comprises the following components:

55 parts of smoothing agent, 17 parts of emulsifier, 8 parts of bundling agent, 2 parts of preservative and bactericidal agent, and 6 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 6 μm; and the carbon-oxygen ratio is 25:1.

The lubricant is 20 parts of glycerol monooleate and 35 parts of glycerol trioleate; the emulsifier is sorbitan monooleate; the sizing agent is 4 parts of polyoxyethylene laurate and 4 parts of triethanolamine oleic acid soap; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and graphene, and continuing stirring; cooling to room temperature, discharging, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 60°C, the stirring time is 2 hours, and the stirring time is continued for 1.4 hours.

Example 10: Ultra-high molecular weight polyethylene fiber spinning oil, in parts by weight, comprises the following components:

55 parts of smoothing agent, 17 parts of emulsifier, 8 parts of bundling agent, 2 parts of preservative and bactericidal agent, and 6 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 6 μm; and the carbon-oxygen ratio is 25:1.

The lubricant is 20 parts of glycerol monooleate and 35 parts of glycerol trioleate; the emulsifier is dodecyl phosphate monoester; the sizing agent is 4 parts of polyoxyethylene laurate and 4 parts of triethanolamine oleic acid soap; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and graphene, and continuing stirring; cooling to room temperature, discharging, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 60°C, the stirring time is 2 hours, and the stirring time is continued for 1.4 hours.

Example 11: Ultra-high molecular weight polyethylene fiber spinning oil, in parts by weight, comprises the following components:

55 parts of smoothing agent, 17 parts of emulsifier, 8 parts of bundling agent, 2 parts of preservative and bactericidal agent, and 2 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 6 μm; and a carbon-oxygen ratio of 25:1.

The lubricant is 20 parts of glycerol monooleate and 35 parts of glycerol trioleate; the emulsifier is 10 parts of sorbitan monooleate and 7 parts of dodecyl phosphate monoester; the sizing agent is 4 parts of polyoxyethylene laurate and 4 parts of triethanolamine oleic acid soap; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and graphene, and continuing stirring; cooling to room temperature, discharging, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 60°C, the stirring time is 2 hours, and the stirring time is continued for 1.4 hours.

Example 12: Ultra-high molecular weight polyethylene fiber spinning oil, in parts by weight, comprises the following components:

55 parts of smoothing agent, 17 parts of emulsifier, 8 parts of bundling agent, 2 parts of preservative and bactericidal agent, and 10 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 6 μm; and the carbon-oxygen ratio is 25:1.

The lubricant is 20 parts of glycerol monooleate and 35 parts of glycerol trioleate; the emulsifier is 10 parts of sorbitan monooleate and 7 parts of dodecyl phosphate monoester; the sizing agent is 4 parts of polyoxyethylene laurate and 4 parts of triethanolamine oleic acid soap; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and graphene, and continuing stirring; cooling to room temperature, discharging, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 60°C, the stirring time is 2 hours, and the stirring time is continued for 1.4 hours.

Example 13: Ultra-high molecular weight polyethylene fiber spinning oil, in parts by weight, comprises the following components:

55 parts of smoothing agent, 17 parts of emulsifier, 8 parts of bundling agent, 2 parts of preservative and bactericidal agent, and 6 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 6 μm; and the carbon-oxygen ratio is 25:1.

The lubricant is lauryl oleate; the emulsifier is 10 parts of sorbitan monooleate and 7 parts of dodecyl phosphate monoester; the sizing agent is 4 parts of polyoxyethylene laurate and 4 parts of triethanolamine oleate soap; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and graphene, and continuing stirring; cooling to room temperature, discharging, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 60°C, the stirring time is 2 hours, and the stirring time is continued for 1.4 hours.

Comparative Example 1: Ultra-high molecular weight polyethylene fiber spinning oil, calculated by weight, comprises the following components:

55 parts of smoothing agent, 17 parts of emulsifier, 8 parts of bundling agent, 2 parts of preservative and bactericidal agent, and 6 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 2 μm; and the carbon-oxygen ratio is 25:1.

The lubricant is 20 parts of glycerol monooleate and 35 parts of glycerol trioleate; the emulsifier is 10 parts of sorbitan monooleate and 7 parts of dodecyl phosphate monoester; the sizing agent is 4 parts of polyoxyethylene laurate and 4 parts of triethanolamine oleic acid soap; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and graphene, and continuing stirring; cooling to room temperature, discharging, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 60°C, the stirring time is 2 hours, and the stirring time is continued for 1.4 hours.

Comparative Example 2: Ultra-high molecular weight polyethylene fiber spinning oil, calculated by weight, comprises the following components:

55 parts of smoothing agent, 17 parts of emulsifier, 8 parts of bundling agent, 2 parts of preservative and bactericidal agent, 6 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 12 μm; and the carbon-oxygen ratio is 25:1.

The lubricant is 20 parts of glycerol monooleate and 35 parts of glycerol trioleate; the emulsifier is 10 parts of sorbitan monooleate and 7 parts of dodecyl phosphate monoester; the sizing agent is 4 parts of polyoxyethylene laurate and 4 parts of triethanolamine oleic acid soap; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and graphene, and continuing stirring; cooling to room temperature, discharging, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 60°C, the stirring time is 2 hours, and the stirring time is continued for 1.4 hours.

Comparative Example 3: Ultra-high molecular weight polyethylene fiber spinning oil, calculated by weight, comprises the following components:

55 parts of smoothing agent, 17 parts of emulsifier, 8 parts of bundling agent, 2 parts of preservative and bactericidal agent, and 6 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 6 μm; and the carbon-oxygen ratio is 15:1.

The lubricant is 20 parts of glycerol monooleate and 35 parts of glycerol trioleate; the emulsifier is 10 parts of sorbitan monooleate and 7 parts of dodecyl phosphate monoester; the sizing agent is 4 parts of polyoxyethylene laurate and 4 parts of triethanolamine oleic acid soap; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and graphene, and continuing stirring; cooling to room temperature, discharging, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 60°C, the stirring time is 2 hours, and the stirring time is continued for 1.4 hours.

Comparative Example 4: Ultra-high molecular weight polyethylene fiber spinning oil, calculated by weight, comprises the following components:

55 parts of smoothing agent, 17 parts of emulsifier, 8 parts of bundling agent, 2 parts of preservative and bactericidal agent, and 6 parts of graphene; wherein the graphene is single-layer graphene with a lateral size of 6 μm; and the carbon-oxygen ratio is 37:1.

The lubricant is 20 parts of glycerol monooleate and 35 parts of glycerol trioleate; the emulsifier is 10 parts of sorbitan monooleate and 7 parts of dodecyl phosphate monoester; the sizing agent is 4 parts of polyoxyethylene laurate and 4 parts of triethanolamine oleic acid soap; the preservative and bactericide is sodium benzoate;

The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, an antiseptic and a bactericide according to a ratio; first adding the smoothing agent, the sizing agent and the antiseptic and a bactericide into a reaction kettle, heating and stirring; then adding the emulsifier and graphene, and continuing stirring; cooling to room temperature, discharging, and obtaining the ultra-high molecular weight polyethylene fiber spinning oil. The heating and stirring temperature is 60°C, the stirring time is 2 hours, and the stirring time is continued for 1.4 hours.

Performance Test:

The ultra-high molecular weight polyethylene fiber spinning oils prepared in the above embodiments and comparative examples and the emulsions prepared therefrom were subjected to physical property tests under the same conditions. The test indicators included: emulsion stability (whether precipitation or stratification occurred after 30 days); oil film strength (using a four-ball friction tester); resistivity (using a resistivity meter); and wettability (using a canvas sedimentation method).

Table 1: Performance test results of ultra-high molecular weight polyethylene fiber spinning oil prepared in Example 1-Example 7

Table 2: Performance test results of ultra-high molecular weight polyethylene fiber spinning oil prepared in Examples 8 to 13

Table 3: Performance test results of ultra-high molecular weight polyethylene fiber spinning oil prepared in Comparative Examples 1 to 4

It can be seen from Examples 1 to 13 that the present invention uses a single-layer graphene with a lateral size of 4-8 μm and a carbon-oxygen ratio of (20-30): 1 as a raw material to prepare a spinning oil for ultra-high molecular weight polyethylene fiber. Graphene can not only play an anti-dripping role, but also greatly improve the antistatic property of the spinning oil due to its excellent conductive properties. By adjusting the carbon-oxygen ratio and size of the graphene surface, it is not necessary to add a coupling agent for modification, which is not only conducive to improving the dispersibility of graphene in the emulsion, but also can improve the mechanical properties of the graphene itself, thereby improving the oil film strength and wetting speed, and will not cause the oil film to rupture. It should be noted that the amount of graphene should not be too much, otherwise it is easy to cause agglomeration, affecting the strength and wetting properties of the spinning oil. By compounding sorbitan monooleate and dodecyl phosphate monoester with different electronegativity, the dispersion performance of graphene can be effectively improved, which is conducive to improving the performance of the spinning oil. Comparative Examples 1 to 4 prove that when the graphene size is too small, it is easy to cause the graphene to agglomerate; when the size is too large, the graphene is easy to settle and the emulsion stability becomes poor. When the carbon-oxygen ratio of graphene is too large, the surface active groups are too few, and the balance of the hydrophilic and hydrophobic interface cannot be formed, which affects the dispersion of graphene in the spinning oil; when the carbon-oxygen ratio is too small, there are too many active groups, which is easy to cause the performance of the graphene itself to decrease, and the affinity with polyethylene fibers is reduced, which is not conducive to the improvement of the performance of the spinning oil.

Claims (10)

1. An ultra-high molecular weight polyethylene fiber spinning oil, characterized in that it comprises the following components in parts by weight: 50-60 parts of smoothing agent, 15-20 parts of emulsifier, 5-10 parts of bundling agent, 1-4 parts of preservative and bactericidal agent, 2-10 parts of graphene; wherein the graphene is single-layer or multi-layer graphene with a lateral size of 4-8μm; the carbon-oxygen ratio is (20-30):1. 2. The ultra-high molecular weight polyethylene fiber spinning oil according to claim 1, characterized in that the smoothing agent is selected from one or more of glycerol monooleate, glycerol dioleate, glycerol trioleate, and lauryl oleate. 3. The ultra-high molecular weight polyethylene fiber spinning oil according to claim 1, characterized in that the emulsifier is selected from one or more of sorbitan monostearate, oleyl alcohol polyoxyethylene ether, isomeric tridecanol polyoxyethylene ether, fatty alcohol polyoxyethylene polyoxypropylene ether, sorbitan monooleate, dodecyl phosphate monoester, polyether-modified silicone, and acetylene glycol emulsifiers. 4. The ultra-high molecular weight polyethylene fiber spinning oil according to claim 3, characterized in that the emulsifier is selected from a mixture of dodecyl phosphate monoester and sorbitan monooleate. 5. The ultra-high molecular weight polyethylene fiber spinning oil according to claim 1, characterized in that the sizing agent is selected from one or more of hydrogenated castor oil polyoxyethylene ether, castor oil polyoxyethylene ether, polyoxyethylene laurate, and triethanolamine oleic acid soap. 6. The ultra-high molecular weight polyethylene fiber spinning oil according to claim 1, characterized in that the preservative and bactericidal agent is sodium benzoate. 7. The ultra-high molecular weight polyethylene fiber spinning oil according to claim 1, characterized in that the graphene is a single-layer graphene with a lateral size of 5-6 μm and a carbon-oxygen ratio of (24-26):1. 8. The ultra-high molecular weight polyethylene fiber spinning oil according to claim 1, characterized in that the weight of the graphene is 4-8 parts. 9. The method for preparing the ultra-high molecular weight polyethylene fiber spinning oil according to any one of claims 1 to 8 is characterized in that it comprises the following steps: weighing a smoothing agent, an emulsifier, a sizing agent, a preservative and a bactericidal agent, and graphene according to a ratio; first adding the smoothing agent, the sizing agent, and the preservative and a bactericidal agent into a reaction kettle, heating and stirring; then adding the emulsifier and graphene, and continuing to stir; cooling to room temperature, and discharging the material to obtain the ultra-high molecular weight polyethylene fiber spinning oil. 10. The method for preparing an ultra-high molecular weight polyethylene fiber spinning oil according to claim 9, characterized in that the heating and stirring temperature is 50-70°C, the stirring time is 1-3h, and the continued stirring time is 1-2h.