Polyester fiber spinning treatment agent and application thereof

Abstract

The invention relates to a synthetic fiber technology, and discloses a polyester fiber spinning treatment agent and application thereof. The polyester fiber spinning treatment agent contains an antistatic agent, a friction regulator and an emulsifier, the antistatic agent contains alkyl ether phosphate potassium salt and fatty amine polyoxyethylene ether. The spinning treating agent can meet the spinning and post-processing requirements of polyester fibers, so that the polyester fibers are good in hydrophilicity in the spinning process, uniform in oiling, good in tow cohesion and small in static electricity in a low-humidity environment.

Description

Technical Field

[0001] The invention relates to synthetic fiber technology, and in particular to a polyester fiber spinning treatment agent and application thereof. Background Art

[0002] Graphene composite polyester fiber is a new functional material. Due to some characteristics of graphene itself and the requirements for the spinning and processing performance of composite polyester fiber, graphene composite polyester fiber has the following problems in the spinning process:

[0003] (1) Poor hydrophilicity and uneven oiling

[0004] Graphene has high chemical stability due to its hexagonal benzene ring-shaped graphene surface, weak interaction with other media, and too strong intermolecular force between sheets, resulting in poor hydrophilicity and lipophilicity. Therefore, during the oiling process, the oil aqueous solution is not easy to spread evenly on the fiber surface, resulting in poor oiling uniformity, which in turn affects the subsequent processing performance of the fiber, such as poor combing properties and high friction.

[0005] (2) Poor cohesion and divergence of yarn bundles

[0006] Since graphene has a complete six-membered benzene ring structure, the graphene surface is inert and has poor interfacial interaction with other media. At the same time, graphene has a large surface energy, is easy to spontaneously aggregate, is almost incompatible with other media or polymers, and is easy to agglomerate, which can easily cause spinning difficulties, poor fiber cohesion, and easy divergence of the filament bundles.

[0007] (3) High static electricity in low humidity environment

[0008] Since graphene itself has poor hygroscopicity, low-oxidation graphene also does not have good water absorption; at the same time, since polyester has high regularity and no hydrophilic groups in its polymer structure, its hygroscopicity is also poor. Therefore, the composite fiber of the two has problems such as high static electricity and poor combing properties in a low-humidity environment.

[0009] Therefore, its production and processing are inseparable from special fiber treating agents. Although the treating agent cannot determine the quality of graphene composite polyester fiber, it plays a vital role in the spinning forming and fiber textile processing of the composite fiber.

[0010] Graphene composite polyester fiber is a new type of polyester modified material, and there is no mature production process at present. The production of graphene composite polyester fiber is very different from that of ordinary polyester fiber. At present, foreign companies have just started to study the special spinning treatment agent for graphene composite polyester fiber, and can only use other types of spinning treatment agents instead. Since these treatment agents are not specially designed for the special structure of graphene composite polyester fiber, they cannot meet the unique requirements of graphene composite polyester fiber spinning and textile processing, and cannot specifically make up for the defects of graphene composite polyester fiber itself in the spinning and spinning process. Therefore, it will largely restrict the development and application of graphene composite polyester fiber. Summary of the invention

[0011] The purpose of the present invention is to overcome the problems existing in the prior art and provide a polyester fiber spinning treatment agent and its application. The polyester fiber spinning treatment agent can meet the spinning and post-processing requirements of polyester fibers, so that the polyester fibers have good hydrophilicity, uniform oiling, good filament cohesion during the spinning process, and low static electricity in a low-humidity environment.

[0012] In order to achieve the above-mentioned object, the first aspect of the present invention provides a polyester fiber spinning treatment agent, which contains an antistatic agent, a friction modifier and an emulsifier; the antistatic agent contains alkyl ether phosphate potassium salt and fatty amine polyoxyethylene ether.

[0013] The second aspect of the present invention provides use of the polyester fiber spinning treatment agent described in the first aspect in fiber spinning.

[0014] The polyester fiber spinning treatment agent provided by the present invention has good hydrophilicity, uniform oiling, good fiber bundle cohesion and low static electricity in a low-humidity environment during the spinning process of the polyester fiber through the coordinated relationship between the antistatic agent, friction regulator and emulsifier containing alkyl ether potassium phosphate and fatty amine polyoxyethylene ether. Among them, the alkyl ether potassium phosphate in the antistatic agent has good moisture absorption effect and good charge neutralization ability, which can effectively reduce the generation of static electricity; the fatty amine polyoxyethylene ether can effectively reduce the dynamic voltage during the high-speed operation of the polyester fiber, and the antistatic effect of the polyester fiber spinning treatment agent is greatly improved through the synergistic effect between the alkyl ether potassium phosphate and the fatty amine polyoxyethylene ether. DETAILED DESCRIPTION

[0015] The specific embodiments of the present invention are described in detail below. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0016] The endpoints and any values ​​of the ranges disclosed in this article are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of each range, the endpoint values ​​of each range and the individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed in this article.

[0017] In the present invention, the degree of polymerization of ethylene oxide refers to the continuous occurrence of structural units -CH 2 -CH 2 -O- times.

[0018] The first aspect of the present invention provides a polyester fiber spinning treatment agent, which contains an antistatic agent, a friction modifier and an emulsifier; the antistatic agent contains alkyl ether phosphate potassium salt and fatty amine polyoxyethylene ether.

[0019] The inventors of the present invention found in the course of research that alkyl ether phosphate potassium salt has good moisture absorption effect and good charge neutralization ability, which can effectively reduce the generation of static electricity; fatty amine polyoxyethylene ether can effectively reduce the dynamic voltage of polyester fiber during high-speed operation, and alkyl ether phosphate potassium salt and fatty amine polyoxyethylene ether work together to form a composite antistatic agent system, and through the synergistic effect of the two, the antistatic effect of the polyester fiber spinning treatment agent is greatly improved. The polyester fiber spinning treatment agent has a cooperative relationship between the antistatic agent, friction modifier and emulsifier containing alkyl ether phosphate potassium salt and fatty amine polyoxyethylene ether, so that the polyester fiber has good hydrophilicity, uniform oiling, good fiber bundle cohesion during the spinning process, and low static electricity in a low-humidity environment.

[0020] In the present invention, the alkyl ether phosphate potassium salt refers to a fatty alcohol polyoxyethylene ether and a phosphating agent such as phosphorus pentoxide undergoing phosphorylation reaction, followed by a neutralization reaction with potassium hydroxide. The difference in carbon chain length of the fatty alcohol in the alkyl ether phosphate potassium salt directly affects the antistatic property, emulsion performance and friction performance of the polyester fiber spinning treatment agent. Preferably, the alkyl ether phosphate potassium salt is a C5-C20 alkyl ether phosphate potassium salt.

[0021] In the present invention, the fatty amine polyoxyethylene ether is prepared by polymerization reaction of fatty amine with ethylene oxide under catalyst conditions. There is no particular restriction on the type of fatty amine polyoxyethylene ether, for example, the fatty amine polyoxyethylene ether can be dodecylamine polyoxyethylene ether, octadecylamine polyoxyethylene ether, tallow amine polyoxyethylene ether, oleylamine polyoxyethylene ether. Preferably, the fatty amine polyoxyethylene ether is C5-C20 fatty amine polyoxyethylene ether.

[0022] According to the present invention, preferably, relative to 10 parts by weight of the antistatic agent, the content of the friction modifier is 5-20 parts by weight, specifically 5 parts by weight, 10 parts by weight, 15 parts by weight, 20 parts by weight, or any value between the two aforementioned values; the content of the emulsifier is 5-10 parts by weight, specifically 5 parts by weight, 8 parts by weight, 10 parts by weight, or any value between the two aforementioned values. The inventors have found that under this preferred embodiment, the polyester fiber spinning treatment agent can meet the spinning and post-processing requirements of the polyester fiber, so that the polyester fiber has good hydrophilicity, uniform oiling, good filament cohesion during the spinning process, and low static electricity in a low-humidity environment.

[0023] According to the present invention, in order to further improve the antistatic effect of the polyester fiber spinning treatment agent, preferably, the weight ratio of the alkyl ether potassium phosphate to the fatty amine polyoxyethylene ether is 1-3:1, specifically 1:1, 2:1, 3:1, or any value between the foregoing two values.

[0024] According to the present invention, preferably, the alkyl ether phosphate potassium salt is a C8-C16 alkyl ether phosphate potassium salt, and the ethylene oxide polymerization degree of the alkyl ether phosphate potassium salt is 3-9. The inventors found that under this preferred embodiment, the alkyl ether phosphate potassium salt has a good hygroscopic effect and good charge neutralization ability, which can effectively reduce the generation of static electricity, thereby improving the antistatic effect of the polyester fiber spinning treatment agent.

[0025] According to the present invention, preferably, the fatty amine polyoxyethylene ether is C8-C18 fatty amine polyoxyethylene ether, and the degree of polymerization of ethylene oxide in the fatty amine polyoxyethylene ether is 6-14. The inventors found that under this preferred embodiment, the fatty amine polyoxyethylene ether can effectively reduce the dynamic voltage of the polyester fiber during high-speed operation, thereby improving the antistatic effect of the polyester fiber spinning treatment agent.

[0026] According to the present invention, the polyester fiber spinning agent can be directly used in the spinning of the fiber, or the polyester fiber spinning agent can be first mixed with a solvent and then used in the spinning of the fiber. Preferably, the polyester fiber spinning agent also contains a solvent. The inventors have found that under this preferred embodiment, the spinning effect of the fiber can be improved.

[0027] According to the present invention, in order to further improve the spinning effect of the fiber, preferably, the content of the solvent is 20-60 parts by weight, specifically 20 parts by weight, 40 parts by weight, 60 parts by weight, or any value between the foregoing two values.

[0028] According to the present invention, in order to further improve the spinning effect of the fiber, preferably, the solvent is water.

[0029] According to the present invention, preferably, the friction modifier is selected from at least one of fatty acid polyoxyethylene ether, polyether-modified silicone oil, fatty alcohol and fatty acid. The inventors found that under this preferred embodiment, the fiber cohesion of the polyester fiber during the spinning process can be improved, thereby improving the combing and yarn-forming properties of the polyester fiber in the downstream weaving and spinning processes.

[0030] In the present invention, fatty acid polyoxyethylene ether is prepared by polymerization reaction of fatty acid with ethylene oxide under catalyst conditions. There is no particular restriction on the type of fatty acid polyoxyethylene ether, for example, fatty acid polyoxyethylene ether can be lauric acid polyoxyethylene ether, oleic acid polyoxyethylene ether, myristic acid polyoxyethylene ether. Preferably, fatty acid polyoxyethylene ether is C5-C20 fatty acid polyoxyethylene ether.

[0031] In the present invention, the polyether-modified silicone oil is a kind of organic silicon nonionic surfactant with unique performance formed by graft copolymerization of polyether and dimethylsiloxane. Various organic silicon surfactants with different performances can be obtained by modifying the number of silicone oil segments or changing the ratio of polyether EO and PO and changing the number of segments and terminal groups. Preferably, the molecular weight of the polyether-modified silicone oil is 300-500, and the molar ratio of EO to PO is 2-5. Specifically, the molecular weight of the polyether-modified polyether is 400, and the molar ratio of EO to PO is 3.

[0032] In the present invention, the fatty alcohol is a higher fatty alcohol, for example, the fatty alcohol is lauryl alcohol, tetradecanol, hexadecanol, stearyl alcohol, eicosanol. Preferably, the fatty alcohol is a C12-16 higher fatty alcohol.

[0033] In the present invention, the fatty acid is a higher fatty acid, for example, the fatty acid is dodecanoic acid, tetradecanoic acid, hexadecanoic acid, octadecanoic acid, eicosanoic acid, and docosanoic acid. Preferably, the fatty acid is a C12-16 higher fatty acid.

[0034] According to the present invention, preferably, the friction modifier is fatty acid polyoxyethylene ether and / or polyether-modified silicone oil. The inventors found that in this preferred embodiment, fatty acid polyoxyethylene ether has a large molecular weight, which can effectively adjust the friction coefficient between fibers and solve the problem of divergence and poor cohesion of polyester fiber bundles; polyether-modified silicone oil can adjust the friction coefficient between fibers and contacted metal, ceramic, and rubber parts, further improving the combing and yarn-forming properties of polyester fibers in downstream spinning and spinning processes.

[0035] According to the present invention, preferably, the friction modifier is fatty acid polyoxyethylene ether and polyether modified silicone oil. The inventors found that under this preferred embodiment, the synergistic effect between fatty acid polyoxyethylene ether and polyether modified silicone oil further improves the fiber cohesion of polyester fiber during the spinning process.

[0036] According to the present invention, in order to further improve the cohesion of polyester fibers during the spinning process, preferably, the weight ratio of the fatty acid polyoxyethylene ether to the polyether modified silicone oil is 3-9:1, specifically 3:1, 6:1, 9:1, or any value between the foregoing two values.

[0037] According to the present invention, preferably, the fatty acid polyoxyethylene ether is C12-C16 fatty acid polyoxyethylene ether, and the degree of polymerization of ethylene oxide in the fatty acid polyoxyethylene ether is 8 to 14. The inventors found that under this preferred embodiment, fatty acid polyoxyethylene ether can effectively adjust the friction coefficient between fibers and further improve the fiber cohesion of polyester fibers during the spinning process.

[0038] According to the present invention, the emulsifier can make the antistatic agent, the friction modifier and the water uniformly mixed into a stable emulsion system, avoiding the occurrence of oil floating, stratification, flocculation, precipitation, demulsification and the like, otherwise it will affect the use performance of the polyester fiber spinning treatment agent. There is no particular restriction on the type of emulsifier, and it can be a conventional choice of technicians in the field. For example, the emulsifier can be fatty alcohol polyoxyethylene ether, sorbitan polyoxyethylene ether, castor oil polyoxyethylene ether, trimethylolpropane polyoxyethylene ether, oleic acid polyoxyethylene ether. In order to further improve the stability of the polyester fiber spinning treatment agent, preferably, the emulsifier is fatty alcohol polyoxyethylene ether and / or sorbitan polyoxyethylene ether, more preferably fatty alcohol polyoxyethylene ether.

[0039] In the present invention, the sorbitan polyoxyethylene ether is polymerized by sorbitan monooleate and ethylene oxide. Preferably, the degree of polymerization of the sorbitan polyoxyethylene ether is 10-30.

[0040] In the present invention, the fatty alcohol polyoxyethylene ether is prepared by polymerization of fatty alcohol with ethylene oxide under catalyst conditions. The difference in carbon chain length of the fatty alcohol in the fatty alcohol polyoxyethylene ether directly affects the antistatic property, emulsion performance and friction performance of the polyester fiber spinning treatment agent. Preferably, the fatty alcohol polyoxyethylene ether is C5-C20 fatty alcohol polyoxyethylene ether.

[0041] According to the present invention, preferably, the fatty alcohol polyoxyethylene ether is C8-C15 fatty alcohol polyoxyethylene ether; the degree of polymerization of ethylene oxide in the fatty alcohol polyoxyethylene ether is 5-20. The inventors found that under this preferred specific implementation, the components of the polyester fiber spinning treatment agent can be well dissolved in water and form a stable and uniform emulsion system, further improving the stability of the polyester fiber spinning treatment agent.

[0042] According to the present invention, the above substances can be obtained through commercial purchase or prepared by oneself.

[0043] According to a particularly preferred embodiment of the present invention, there is provided a polyester fiber spinning treatment agent, comprising: an antistatic agent, a friction modifier, an emulsifier and water;

[0044] Relative to 10 parts by weight of the antistatic agent, the content of the friction modifier is 5-20 parts by weight, the content of the emulsifier is 5-10 parts by weight, and the content of the solvent is 20-60 parts by weight; the antistatic agent contains alkyl ether phosphate potassium salt and fatty amine polyoxyethylene ether, and the weight ratio of the alkyl ether phosphate potassium salt to the fatty amine polyoxyethylene ether is 1-3:1; the alkyl ether phosphate potassium salt is C8-C16 alkyl ether phosphate potassium salt, and the degree of polymerization of ethylene oxide in the alkyl ether phosphate potassium salt is 3-9; the fatty amine polyoxyethylene ether is C8-C18 fatty amine polyoxyethylene ether The degree of polymerization of ethylene oxide in the fatty amine polyoxyethylene ether is 6-14; the solvent is water; the friction adjuster is fatty acid polyoxyethylene ether and polyether modified silicone oil, the fatty acid polyoxyethylene ether is C12-C16 fatty acid polyoxyethylene ether, the degree of polymerization of ethylene oxide in the fatty acid polyoxyethylene ether is 8-14, and the weight ratio of fatty acid polyoxyethylene ether to polyether modified silicone oil is 3-9:1; the emulsifier is fatty alcohol polyoxyethylene ether, the fatty alcohol polyoxyethylene ether is C8-C15 fatty alcohol polyoxyethylene ether, and the degree of polymerization of ethylene oxide in the fatty alcohol polyoxyethylene ether is 5-20.

[0045] In the above preferred embodiment, the obtained polyester fiber spinning treatment agent has good hydrophilicity, uniform oiling, good fiber bundle cohesion during the spinning process of the polyester fiber, and low static electricity in a low-humidity environment.

[0046] In the present invention, the preparation method of the polyester fiber spinning treatment agent can be to mix the raw materials in a conventional manner to obtain the polyester fiber spinning treatment agent. Preferably, the mixing conditions at least include: a temperature of 40-50°C, specifically 40°C, 45°C, 50°C, or any value between the above two values; a time of 2-3h, specifically 2h, 2.5h, 3h, or any value between the above two values.

[0047] In the present invention, after the mixed product is cooled, it is filtered, discharged and packaged to obtain the polyester fiber spinning treatment agent.

[0048] The second aspect of the present invention provides use of the polyester fiber spinning treatment agent described in the first aspect in fiber spinning.

[0049] In the present invention, the method for spinning fibers using the above-mentioned polyester fiber spinning treatment agent comprises the following steps: spinning—air cooling—treatment agent—barrel dropping—bundling and stretching—setting—treatment agent—curling—setting—cutting—packaging.

[0050] According to the present invention, there is no particular limitation on the type of polyester fiber. For example, the polyester fiber can be graphene composite polyester fiber, polyethylene terephthalate fiber, poly(1,4-cyclohexyl dimethanol terephthalate) fiber, poly(butylene terephthalate) fiber or poly(trimethylene terephthalate) fiber. Preferably, the polyester fiber is graphene composite polyester fiber.

[0051] The present invention is described in detail below with reference to the embodiments, but the scope of the present invention is not limited thereby.

[0052] In the following examples and comparative examples, C16 alkyl ether phosphate potassium salt with an ethylene oxide polymerization degree of 3 was purchased from Tianjin Gongda Textile Auxiliary Co., Ltd., model C1603PK; C8 alkyl ether phosphate potassium salt with an ethylene oxide polymerization degree of 9 was purchased from Tianjin Gongda Textile Auxiliary Co., Ltd., model C809PK; C12 alkyl ether phosphate potassium salt with an ethylene oxide polymerization degree of 7 was purchased from Tianjin Gongda Textile Auxiliary Co., Ltd., model C1207PK; C8 fatty amine polyoxyethylene ether with an ethylene oxide polymerization degree of 6 was purchased from Tianjin Gongda Textile Auxiliary Co., Ltd., model CA806; C18 fatty amine polyoxyethylene ether with an ethylene oxide polymerization degree of 14 was purchased from Tianjin Gongda Textile Auxiliary Co., Ltd., model CA1814; C12 fatty amine polyoxyethylene ether with a polymerization degree of 10 was purchased from Tianjin Gongda Textile Auxiliary Co., Ltd. with model number CA1210; polyether modified silicone oil (polyether molecular weight 400, EO and PO molar ratio of 3) was purchased from Tianjin Gongda Textile Auxiliary Co., Ltd. with model number S4003; C8 fatty alcohol polyoxyethylene ether with an ethylene oxide polymerization degree of 5 was purchased from Tianjin Gongda Textile Auxiliary Co., Ltd. with model number C805; C15 fatty alcohol polyoxyethylene ether with an ethylene oxide polymerization degree of 10 was purchased from Tianjin Gongda Textile Auxiliary Co., Ltd. with model number C1510; C12 fatty alcohol polyoxyethylene ether with an ethylene oxide polymerization degree of 20 was purchased from Tianjin Gongda Textile Auxiliary Co., Ltd. with model number C1220; unless otherwise specified, the remaining raw materials were purchased from commercial sources.

[0053] In the following examples and comparative examples, 1 part by weight is 1 g.

[0054] Example 1

[0055] 15 parts by weight of C16 alkyl ether potassium salt with an ethylene oxide polymerization degree of 3, 5 parts by weight of C8 fatty amine polyoxyethylene ether with an ethylene oxide polymerization degree of 6, 15 parts by weight of C12 fatty acid polyoxyethylene ether with an ethylene oxide polymerization degree of 8, 5 parts by weight of polyether modified silicone oil, 20 parts by weight of C8 fatty alcohol polyoxyethylene ether with an ethylene oxide polymerization degree of 5 and 40 parts by weight of water are pumped into a reaction kettle, heated to 40°C, stirred for 3 hours, cooled, filtered, discharged, and packaged to obtain a polyester fiber spinning treatment agent.

[0056] Example 2

[0057] 10 parts by weight of C8 alkyl ether potassium salt with an ethylene oxide polymerization degree of 9, 10 parts by weight of C18 fatty amine polyoxyethylene ether with an ethylene oxide polymerization degree of 14, 8 parts by weight of C12 fatty acid polyoxyethylene ether with an ethylene oxide polymerization degree of 14, 2 parts by weight of polyether modified silicone oil, 10 parts by weight of C15 fatty alcohol polyoxyethylene ether with an ethylene oxide polymerization degree of 10 and 60 parts by weight of water are pumped into a reaction kettle, heated to 50°C, stirred for 2 hours, cooled, filtered, discharged, and packaged to obtain a polyester fiber spinning treatment agent.

[0058] Example 3

[0059] 6 parts by weight of C12 alkyl ether potassium salt with an ethylene oxide polymerization degree of 7, 4 parts by weight of C12 fatty amine polyoxyethylene ether with an ethylene oxide polymerization degree of 10, 18 parts by weight of C16 fatty acid polyoxyethylene ether with an ethylene oxide polymerization degree of 10, 2 parts by weight of polyether modified silicone oil, 10 parts by weight of C12 fatty alcohol polyoxyethylene ether with an ethylene oxide polymerization degree of 20 and 60 parts by weight of water are pumped into a reaction kettle, heated to 50°C, stirred for 2 hours, cooled, filtered, discharged, and packaged to obtain a polyester fiber spinning treatment agent.

[0060] Example 4

[0061] A polyester fiber spinning treatment agent was prepared according to the method of Example 1, except that the amount of C16 alkyl ether phosphate potassium salt with an ethylene oxide polymerization degree of 3 was replaced by 5 parts by weight, and the amount of C8 fatty amine polyoxyethylene ether with an ethylene oxide polymerization degree of 6 was replaced by 15 parts by weight.

[0062] Example 5

[0063] A polyester fiber spinning treatment agent was prepared according to the method of Example 1, except that the amount of C16 alkyl ether phosphate potassium salt with an ethylene oxide polymerization degree of 3 was replaced by 6 parts by weight, and the amount of C8 fatty amine polyoxyethylene ether with an ethylene oxide polymerization degree of 6 was replaced by 2 parts by weight.

[0064] Example 6

[0065] A polyester fiber spinning treatment agent was prepared according to the method of Example 1, except that the amount of C16 alkyl ether phosphate potassium salt with an ethylene oxide polymerization degree of 3 was replaced by C6 alkyl ether phosphate potassium salt with an ethylene oxide polymerization degree of 12, and the C8 fatty amine polyoxyethylene ether with an ethylene oxide polymerization degree of 6 was replaced by C5 fatty amine polyoxyethylene ether with an ethylene oxide polymerization degree of 3.

[0066] Example 7

[0067] A polyester fiber spinning treatment agent was prepared according to the method of Example 2, except that the amount of C12 fatty acid polyoxyethylene ether with an ethylene oxide polymerization degree of 14 was replaced by 2 parts by weight, and the amount of polyether-modified silicone oil was replaced by 8 parts by weight.

[0068] Example 8

[0069] 10 parts by weight of C8 alkyl ether potassium salt with an ethylene oxide polymerization degree of 9, 10 parts by weight of C18 fatty amine polyoxyethylene ether with an ethylene oxide polymerization degree of 14, 10 parts by weight of C12 fatty acid polyoxyethylene ether with an ethylene oxide polymerization degree of 14, 10 parts by weight of C15 fatty alcohol polyoxyethylene ether with an ethylene oxide polymerization degree of 10 and 60 parts by weight of water are pumped into a reaction kettle, heated to 50°C, stirred for 2 hours, cooled, filtered, discharged, and packaged to obtain a polyester fiber spinning treatment agent.

[0070] Example 9

[0071] 10 parts by weight of C8 alkyl ether potassium salt with an ethylene oxide polymerization degree of 9, 10 parts by weight of C18 fatty amine polyoxyethylene ether with an ethylene oxide polymerization degree of 14, 10 parts by weight of polyether modified silicone oil, 10 parts by weight of C15 fatty alcohol polyoxyethylene ether with an ethylene oxide polymerization degree of 10 and 60 parts by weight of water are pumped into a reaction kettle, heated to 50°C, stirred for 2 hours, cooled, filtered, discharged, and packaged to obtain a polyester fiber spinning treatment agent.

[0072] Example 10

[0073] A polyester fiber spinning treatment agent was prepared according to the method of Example 3, except that the C12 fatty alcohol polyoxyethylene ether with an ethylene oxide polymerization degree of 20 was replaced by sorbitan polyoxyethylene ether.

[0074] Embodiment 11

[0075] A polyester fiber spinning treatment agent was prepared according to the method of Example 1, except that the C8 fatty alcohol polyoxyethylene ether with an ethylene oxide polymerization degree of 5 was replaced by anhydrous sorbitan polyoxyethylene ether with a polymerization degree of 20.

[0076] Example 12

[0077] 15 parts by weight of C16 alkyl ether potassium salt with an ethylene oxide polymerization degree of 5, 5 parts by weight of C8 fatty amine polyoxyethylene ether with an ethylene oxide polymerization degree of 8, 15 parts by weight of C12 fatty acid polyoxyethylene ether with an ethylene oxide polymerization degree of 8, 5 parts by weight of polyether modified silicone oil and 20 parts by weight of C8 fatty alcohol polyoxyethylene ether with an ethylene oxide polymerization degree of 5 are pumped into a reaction kettle, heated to 40°C, stirred for 3 hours, cooled, filtered, discharged and packaged to obtain a polyester fiber spinning treatment agent.

[0078] Comparative Example 1

[0079] 20 parts by weight of C16 alkyl ether potassium salt with an ethylene oxide polymerization degree of 3, 15 parts by weight of C12 fatty acid polyoxyethylene ether with an ethylene oxide polymerization degree of 8, 5 parts by weight of polyether modified silicone oil, 20 parts by weight of C8 fatty alcohol polyoxyethylene ether with an ethylene oxide polymerization degree of 5 and 40 parts by weight of water are pumped into a reaction kettle, heated to 40°C, stirred for 3 hours, cooled, filtered, discharged, and packaged to obtain a polyester fiber spinning treatment agent.

[0080] Comparative Example 2

[0081] 20 parts by weight of C8 fatty amine polyoxyethylene ether with an ethylene oxide polymerization degree of 6, 15 parts by weight of C12 fatty acid polyoxyethylene ether with an ethylene oxide polymerization degree of 8, 5 parts by weight of polyether modified silicone oil, 20 parts by weight of C8 fatty alcohol polyoxyethylene ether with an ethylene oxide polymerization degree of 5 and 40 parts by weight of water are pumped into a reaction kettle, heated to 40°C, stirred for 3 hours, cooled, filtered, discharged, and packaged to obtain a polyester fiber spinning treatment agent.

[0082] Comparative Example 3

[0083] 15 parts by weight of C16 alkyl ether potassium salt with an ethylene oxide polymerization degree of 3, 5 parts by weight of C8 fatty amine polyoxyethylene ether with an ethylene oxide polymerization degree of 6, 20 parts by weight of C8 fatty alcohol polyoxyethylene ether with an ethylene oxide polymerization degree of 5 and 40 parts by weight of water are pumped into a reaction kettle, heated to 40°C, stirred for 3 hours, cooled, filtered, discharged and packaged to obtain a polyester fiber spinning treatment agent.

[0084] Comparative Example 4

[0085] 15 parts by weight of C16 alkyl ether potassium salt with an ethylene oxide polymerization degree of 3, 5 parts by weight of C8 fatty amine polyoxyethylene ether with an ethylene oxide polymerization degree of 6, 15 parts by weight of C12 fatty acid polyoxyethylene ether with an ethylene oxide polymerization degree of 8, 5 parts by weight of polyether modified silicone oil and 40 parts by weight of water are pumped into a reaction kettle, heated to 40°C, stirred for 3 hours, cooled, filtered, discharged and packaged to obtain a polyester fiber spinning treatment agent.

[0086] Test Example 1

[0087] The polyester fiber spinning treatment agents prepared in Examples 1 to 12 and Comparative Examples 1 to 4 were used as samples. The appearance of each sample was observed at 25° C. and the effective ingredient content of the sample (the content of substances other than water in the treatment agent) was tested. The testing method for the effective ingredient content was referred to GB / T 6284-2006 "General method for determination of moisture in chemical products - loss on drying method"; each sample was prepared into a 1wt% aqueous solution, and the pH value was tested at 25° C.; each sample was prepared into a 10wt% solution, and the emulsion stability of the sample was tested (48h, 25° C.), and the testing method for the emulsion stability was referred to GB / T 11543-2008 "Test method for properties of medium and high viscosity emulsions of surfactants and evaluation method for their emulsification ability", and the results are shown in Table 1.

[0088] Table 1

[0089]

[0090] It can be seen from the data in Table 1 that the polyester fiber spinning treatment agent obtained by the preparation method provided by the present invention in Examples 1 to 11 has no obvious difference in appearance, pH and emulsion stability compared with the polyester fiber spinning treatment agent provided by Comparative Examples 1 to 4; the polyester fiber spinning treatment agent prepared in Example 12 does not contain a solvent and has poor stability.

[0091] Test Example 2

[0092] The polyester fiber spinning treatment agent prepared by Example 1 to Example 12 and Comparative Example 1 to Comparative Example 4 was used in the spinning experiment of graphene composite polyester fiber. The experimental process included: applying the treatment agent emulsion by oil roller after pre-spinning, then dropping the fiber into a barrel, observing the laying state, bundling multiple fiber barrels and stretching them, observing the stretching point conditions, observing the fiber conditions at the crimping machine outlet after applying the treatment agent in post-spinning, and finally observing the fiber conditions when being cut by the cutting machine; and testing the oil content of the graphene polyester fiber. The test method of the oil content refers to GB / T6504-2017 "Test Method for Oil Content of Chemical Fibers". The spinning results are shown in Table 2.

[0093] Table 2

[0094]

[0095]

[0096] It can be seen from the results in Table 2 that, compared with Comparative Examples 1 to 4, when the polyester fiber spinning treatment agent obtained by the preparation method provided by the present invention in Examples 1 to 12 is used for spinning graphene composite polyester fibers, the pre-spinning laying state, the post-spinning drafting point state, the post-spinning curling state and the post-spinning cutting state are significantly improved, indicating that the polyester fiber spinning treatment agent within the protection scope of the present application can improve the hydrophilicity, antistatic property and cohesion of the polyester fiber in the spinning process, which is beneficial to the smooth progress of the spinning production and post-processing procedures.

[0097] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various technical features in any other suitable manner, and these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A polyester fiber spinning treatment agent, characterized in that: The polyester fiber spinning treatment agent contains an antistatic agent, a friction adjuster and an emulsifier; The antistatic agent contains alkyl ether phosphate potassium salt and fatty amine polyoxyethylene ether.

2. The polyester fiber spinning treatment agent according to claim 1, characterized in that: Relative to 10 parts by weight of the antistatic agent, the content of the friction modifier is 5-20 parts by weight, and the content of the emulsifier is 5-10 parts by weight.

3. The polyester fiber spinning treatment agent according to claim 1, characterized in that: The weight ratio of the alkyl ether potassium phosphate to the fatty amine polyoxyethylene ether is 1-3:

1.

4. The polyester fiber spinning treatment agent according to claim 1, characterized in that: The alkyl ether phosphate potassium salt is a C8-C16 alkyl ether phosphate potassium salt, and the degree of polymerization of ethylene oxide in the alkyl ether phosphate potassium salt is 3-9; Preferably, the fatty amine polyoxyethylene ether is C8-C18 fatty amine polyoxyethylene ether, and the degree of polymerization of ethylene oxide in the fatty amine polyoxyethylene ether is 6-14.

5. The polyester fiber spinning treatment agent according to any one of claims 1 to 4, characterized in that: The polyester fiber spinning treatment agent also contains a solvent; Preferably, the content of the solvent is 20-60 parts by weight relative to 10 parts by weight of the antistatic agent; Preferably, the solvent is water.

6. The polyester fiber spinning treatment agent according to any one of claims 1 to 4, characterized in that: The friction modifier is selected from at least one of fatty acid polyoxyethylene ether, polyether-modified silicone oil, fatty alcohol and fatty acid.

7. The polyester fiber spinning treatment agent according to claim 6, characterized in that: The friction modifier is fatty acid polyoxyethylene ether and / or polyether modified silicone oil; Preferably, the friction modifier is fatty acid polyoxyethylene ether and polyether modified silicone oil; Preferably, the weight ratio of the fatty acid polyoxyethylene ether to the polyether-modified silicone oil is 3-9:1; Preferably, the fatty acid polyoxyethylene ether is C12-C16 fatty acid polyoxyethylene ether, and the degree of polymerization of ethylene oxide in the fatty acid polyoxyethylene ether is 8-14.

8. The polyester fiber spinning treatment agent according to any one of claims 1 to 4, characterized in that: The emulsifier is fatty alcohol polyoxyethylene ether and / or sorbitan polyoxyethylene ether, preferably fatty alcohol polyoxyethylene ether.

9. The polyester fiber spinning treatment agent according to claim 8, characterized in that: The fatty alcohol polyoxyethylene ether is C8-C15 fatty alcohol polyoxyethylene ether, and the degree of polymerization of ethylene oxide in the fatty alcohol polyoxyethylene ether is 5-20.

10. Use of the polyester fiber spinning treatment agent according to any one of claims 1 to 9 in fiber spinning; Preferably, the polyester fiber is a graphene composite polyester fiber.

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