CN116716728B - Spinning oil for full-dull FDY fibers and preparation method thereof - Google Patents

Spinning oil for full-dull FDY fibers and preparation method thereof Download PDF

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CN116716728B
CN116716728B CN202310973257.4A CN202310973257A CN116716728B CN 116716728 B CN116716728 B CN 116716728B CN 202310973257 A CN202310973257 A CN 202310973257A CN 116716728 B CN116716728 B CN 116716728B
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full
reaction
fiber
spinning oil
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CN116716728A (en
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印成
柴森光
张义成
胡文龙
陆佳颖
丛茂鹏
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Jiangsu Xuanda Polymer Material Co ltd
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
    • D06M13/2243—Mono-, di-, or triglycerides
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
    • D06M13/188—Monocarboxylic acids; Anhydrides, halides or salts thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
    • D06M13/2246—Esters of unsaturated carboxylic acids
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/507—Polyesters
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/53—Polyethers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/32—Polyesters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

The invention relates to a spinning oil for full extinction FDY fibers and a preparation method thereof, wherein the spinning oil comprises the following raw materials in percentage by weight: 30-50% of a smoothing agent, 45-60% of an oil film stabilizer, 2-5% of an antistatic agent and 5-8% of an emulsifying agent, wherein the oil film stabilizer is obtained by polymerizing 1, 4-benzenediol and aspartic acid. The spinning oil provided by the invention has better wetting permeability on the surface of the FDY fiber, good hydrophilicity and high emulsification efficiency, and more importantly, has better heat resistance, can effectively reduce the generation of broken filaments and broken ends, and realizes the smooth processing of the full-dull FDY fiber.

Description

Spinning oil for full-dull FDY fibers and preparation method thereof
Technical Field
The invention relates to the technical field of spinning oil, in particular to a full-dull FDY fiber spinning oil and a preparation method thereof.
Background
The cotton fiber has the advantages of softness, comfort, soft color, good hydrophilic hygroscopicity, no skin irritation, fluffiness, warmth retention and the like, is widely applied to the fields of clothing, home textiles, clothing and the like, but the yield of the cotton fiber can not meet the market demand far due to the influence of factors such as planting area, climate and the like. The polyester fiber has the characteristics of high strength, stiffness, washing and wearing, is widely applied to the fields of clothing, home textiles and the like, and is widely woven by taking polyester staple fibers as raw materials at present, and the obtained fiber product has the characteristics of softness, fluffiness and the like.
Along with the progress of chemical fiber filament spinning technology, novel fiber layers such as special-shaped, superfine denier, multi-component composite and online addition are endless, novel differentiated and functional fibers are continuously developed, and polyester FDY filaments are increasingly favored in the aspect of cotton imitation due to the advantages of short process flow, low energy consumption, easy quality adjustment, various properties and the like. Because the polyester FDY fiber has no characteristics of softness, easy moisture absorption, soft luster, fluffiness and the like of cotton fiber, the polyester FDY fiber is subjected to functional treatment by a special process, for example, a special spinneret plate and a corresponding spinning process are selected to produce the fine denier or superfine denier polyester FDY fiber, so that the softness of the fiber is improved; increasing specific surface area of fiber, improving wicking speed, and accelerating moisture absorption and discharge. Because various resistances and materials of the terylene are stiff, the defects of cotton materials in application can be made up, and therefore, the development of the terylene FDY fiber cotton-like product has good application prospect.
The spinning oil used in the full-dull FDY fiber spinning process consists of a smoothing agent, a cohesion agent, an antistatic agent, an emulsifying agent, a wetting agent and the like. The spinning oil is coated on the surface of the full-extinction FDY fiber, so that the aim of changing the surface performance of the full-extinction FDY fiber is fulfilled, the friction characteristics between the full-extinction FDY fiber and between the full-extinction FDY fiber and a contact component are regulated in the spinning and processing processes, the smoothness, softness, cohesion and the like of the full-extinction FDY fiber are improved, the hygroscopicity of the full-extinction FDY fiber can be enhanced, the electrostatic dredging capacity of the full-extinction FDY fiber is improved, the phenomena of broken filaments, broken ends and the like of the full-extinction FDY fiber in the spinning and processing processes can be reduced, and the spinnability and the weavability of the full-extinction FDY fiber are improved.
The full-dull FDY fiber spinning speed is generally more than 4300-4500m/min, the speed is high, the friction resistance is high, meanwhile, the total fineness and the single filament fineness of the fiber are low, the fiber is easily damaged due to overlarge tension or friction resistance in the spinning and weaving processes, the phenomena of broken filaments, broken ends and the like are caused, and the running of production equipment is unstable and the product quality is reduced. Because the full-extinction FDY fiber is added with the titanium dioxide which is not less than 1.5 percent, the titanium dioxide is easy to agglomerate and separate out the surface of the melt in the spinning process, the friction force between the fiber and between the fiber and the equipment is increased, and the abnormal spinning phenomena such as powdery mildew, tension fluctuation, winding and the like occur, thereby increasing the spinning difficulty and influencing the superior product rate of the product. Therefore, there is an urgent need to develop a spin finish suitable for full dull FDY fibers.
Disclosure of Invention
The invention provides a spinning oil for full-dull FDY fibers, which can improve the smoothness, wettability and antistatic property of the FDY fibers in the processing process, so as to solve the problem of fiber damage caused by overlarge friction resistance, and has better heat resistance, and phenomena such as smoke generation, coking, oil dripping and the like can not occur even in a high-temperature state.
The spinning oil for the full-dull FDY fiber comprises the following components in parts by weight: the spinning oil for the full-dull FDY fiber is characterized by comprising the following components in percentage by weight: 30-50% of a smoothing agent, 45-60% of an oil film stabilizer, 2-5% of an antistatic agent and 5-8% of an emulsifying agent; wherein the oil film stabilizer is obtained by polycondensation of 1, 4-benzene diethanol and aspartic acid serving as polymerization monomers.
In some embodiments of the invention, the smoothing agent is at least one of glycerol monopalmitate, glycerol monooleate, glycerol monostearate, isooctyl oleate, lauryl oleate, isooctyl stearate, and diisooctyl sebacate.
In some embodiments of the invention, the oil film stabilizer is prepared as follows:
s1: uniformly mixing aspartic acid and di-tert-butyl dicarbonate in an alcohol solvent, removing the solvent after 2-3 hours, and washing the product by using n-hexane;
s2: introducing inert gas into a reaction kettle, adding a certain amount of 1, 4-benzenediol and the product obtained in the step S1 into the reaction kettle, mixing and dissolving at 80-90 ℃, adding a solid acid catalyst into the reaction kettle, starting stirring, heating, vacuumizing to a certain condition, and starting the reaction;
s3: after the reaction is completed, cooling to room temperature, mixing the product with an organic solvent, and adding an acid solution and continuously stirring;
s4: filtering and spin-evaporating the system after the reaction in the step S3, removing the precipitate, the organic solvent and the acid solution, diluting with a small amount of organic solvent, regulating the pH of the system to be alkaline, continuously stirring, adding deionized water after a period of time, mixing, standing for layering, and taking an organic phase to obtain the oil film stabilizer.
In some embodiments of the present invention, the molar ratio of aspartic acid to di-tert-butyl dicarbonate in the step S1 is 1:1-1.5, and the alcohol solvent is at least one of methanol and ethanol.
In some embodiments of the invention, the molar ratio of 1, 4-benzenediol to aspartic acid in the system of step S2 is from 0.8 to 1.5:1 to 2. The inventor finds that the molar quantity of aspartic acid used for preparing the oil film stabilizer is slightly more than that of 1, 4-benzene diethanol, so that the hydroxyl in the system is completely converted into ester groups, and the finally prepared spinning oil has better oxidation resistance in the use process. But can not be used too much, otherwise, the amino content is more, so that the water absorption rate of the obtained oil film stabilizer is larger, and the adhesion uniformity on the fiber surface in the spinning oiling process is affected.
In some embodiments of the invention, the reaction conditions in the system of step S2 are 150-200℃and 70-100Pa. The solid acid is preferably at least one of aluminum oxide, titanium oxide and zirconium oxide, and the addition amount is 1-5% of the total mass of the system.
In some embodiments of the present invention, in the system of step S2, the organic solvent is one of tetrahydrofuran and dichloromethane, and the acid solution is one of hydrochloric acid and trifluoroacetic acid.
In some embodiments of the invention, the antistatic agent is at least one of octadecyl phosphate and polyoxyethylene alkyl phosphate, wherein the polyoxyethylene alkyl phosphate has an alkyl carbon number of C8-C15 and a degree of polymerization of 3-4.
In some embodiments of the present invention, the emulsifier is at least one of stearate, N-methylamide carboxylate, sorbitan fatty acid ester polyoxyethylene ether, wherein the specific selection of sorbitan fatty acid ester polyoxyethylene ether may be, but is not limited to: t-20, T-40 and T-60 of Zhejiang Liaowang chemical industry Co., ltd.
The preparation method of the spinning oil for the full-dull FDY fiber comprises the following steps: the components monomers are put into a compound kettle according to the proportion, the temperature is raised to 40-60 ℃ and stirred at a constant speed for 1-2h, the pH is regulated to 6-8 after the temperature is reduced to room temperature, and the mixture is filtered and filled after sampling and testing are qualified.
In some embodiments of the invention, the agent used to adjust the pH is at least one of triethanolamine, potassium hydroxide, citric acid, sorbic acid, sodium bicarbonate, and disodium hydrogen phosphate.
The beneficial effects are that: compared with the prior art, the invention obtains the oil film stabilizer by polymerizing the 1, 4-benzene diethanol and the aspartic acid, wherein the molecular main chain of the oil film stabilizer contains benzene rings and ester groups, and the side chain is amino, and when the oil film stabilizer is compounded with a smoothing agent, an antistatic agent, an emulsifying agent and the like to prepare a spinning oil agent for use:
1, on the surface of the full-dull FDY fiber, the wetting and spreading efficiency is excellent due to the existence of benzene rings and ester groups, and the full-dull FDY fiber can be rapidly and uniformly adsorbed on the surface of the fiber under the condition of high-speed operation;
2, the fiber has good stability in a high-temperature stage, can effectively reduce the generation of coking broken ends, and ensures the production quality of the fiber;
3, because of the hydrophilicity of the side chain amino groups, the spinning oil can obtain excellent emulsification efficiency and antistatic property by only adding a small amount of emulsifying agent and antistatic agent.
Description of the embodiments
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The preparation of the oil film stabilizers used in the examples and comparative examples below is illustrated by way of example:
stabilizer-1
S1: uniformly mixing 10mol of aspartic acid and 11mol of di-tert-butyl dicarbonate in ethanol, removing the ethanol after 2-3 hours, and washing the product with n-hexane;
s2: introducing nitrogen into a reaction kettle, adding 8mol of 1, 4-benzenediol and the product obtained in the step S1 into the reaction kettle, mixing and dissolving at 80-90 ℃, adding alumina accounting for 1% of the total mass of the system into the reaction kettle, starting stirring, heating, vacuumizing to 150 ℃ and starting reaction under 70 Pa;
s3: after the reaction is completed, cooling to room temperature, mixing the product with tetrahydrofuran, adding hydrochloric acid accounting for 1/3 of the volume of the tetrahydrofuran, and continuously stirring;
s4: filtering and spin-evaporating the system after the reaction in the step S3, removing the precipitate, the organic solvent and the acid solution, diluting with a small amount of tetrahydrofuran, regulating the pH of the system to be alkaline, continuously stirring, adding deionized water after a period of time, standing for layering, and taking an organic phase to obtain the oil film stabilizer-1.
Stabilizer-2
S1: uniformly mixing 15mol of aspartic acid and 18mol of di-tert-butyl dicarbonate in ethanol, removing the ethanol after 2-3 hours, and washing the product with n-hexane;
s2: after introducing nitrogen into the reaction kettle, adding 10mol of 1, 4-benzenediol and the product obtained in the step S1 into the reaction kettle, mixing and dissolving at 80-90 ℃, adding titanium oxide into the reaction kettle, starting stirring, heating, vacuumizing to 180 ℃ and 85Pa, and starting to react;
s3: after the reaction is completed, cooling to room temperature, mixing the product with dichloromethane, adding trifluoroacetic acid accounting for 1/3 of the volume of the dichloromethane, and continuously stirring;
s4: filtering and spin-evaporating the system after the reaction in the step S3, removing sediment, an organic solvent and an acid solution, diluting with a small amount of dichloromethane, regulating the pH of the system to be alkaline, continuously stirring, adding deionized water after a period of time, mixing, standing for layering, and taking an organic phase to obtain the oil film stabilizer-2.
Stabilizer-3
S1: uniformly mixing 20mol of aspartic acid and 30mol of di-tert-butyl dicarbonate in methanol, removing the methanol after 2-3 hours, and washing the product with n-hexane;
s2: introducing nitrogen into a reaction kettle, adding 15mol of 1, 4-benzenediol and the product obtained in the step S1 into the reaction kettle, mixing and dissolving at 80-90 ℃, adding zirconia into the reaction kettle, starting stirring, heating, vacuumizing to 200 ℃ and 100Pa, and starting to react;
s3: after the reaction is completed, cooling to room temperature, mixing the product with dichloromethane, adding trifluoroacetic acid accounting for 1/3 of the volume of the dichloromethane, and continuously stirring;
s4: filtering and spin-evaporating the system after the reaction in the step S3, removing sediment, an organic solvent and an acid solution, diluting with a small amount of dichloromethane, regulating the pH of the system to be alkaline, continuously stirring, adding deionized water after a period of time, mixing, standing for layering, and taking an organic phase to obtain the oil film stabilizer-3.
Stabilizer-4
The same procedure as for the preparation of stabilizer-3 was followed, except that 37.5mol of aspartic acid was used and the corresponding amount of tert-butyl dicarbonate was 40mol.
Stabilizer-5
The same procedure as for the preparation of stabilizer-3 is followed, except that 9mol of aspartic acid are used and the corresponding amount of di-tert-butyl dicarbonate is 10mol.
Adding the oil film stabilizer, the smoothing agent, the antistatic agent and the emulsifying agent into a compound kettle according to the proportion, heating to 40-60 ℃ and stirring at constant speed for 1-2h, after the temperature is reduced to room temperature, using sodium bicarbonate to adjust the pH of a system to 6-8, sampling, testing to be qualified, filtering and filling, wherein the raw materials and the proportion in each example and comparative example are shown in tables 1-1 and 1-2:
TABLE 1-1 raw materials and proportions used in examples 1-3
TABLE 1-2 examples 4-5 and comparative example 1 raw materials and proportions used
The spin finish formulated in example 1 of patent CN114959952a was used in comparative example 2.
The spin finishes obtained in examples 1-5 and comparative examples 1-2 were subjected to the following performance tests:
stability: preparing the obtained spinning oil solution and deionized water into emulsion with the mass fraction of 2%, standing for 24 hours at room temperature, and observing whether floating oil is generated;
bundling properties: immersing the oil-free full-dull FDY fibers in the emulsion with the spinning oil content of 2% for 5min, taking out, suspending for 24h, and observing the scattering degree of the cross section of the tows when the yarns are sheared under 20cN tension; if the percentage of increase in the cross-sectional area is less than 10%, the test is considered to be acceptable;
antistatic properties: the specific resistance (omega.m) of the full-dull FDY fiber after oiling is tested on a YG321 type fiber specific resistance meter, the fiber mass is 5g, and the test temperature is 16 ℃ and the relative humidity is 35%;
surface tension: the surface tension (mN/m) of the 2% emulsion was measured with an ZL-2 type automatic surface tensiometer at 30 ℃;
wetting speed(s): the concentration of the emulsion is 2% and the temperature is 30 ℃ by adopting a canvas sedimentation method.
The results of the tests of the spin finishes prepared in examples 1 to 5 and comparative examples 1 to 2 are shown in Table 2:
TABLE 2 results of Performance test of spin finishes prepared in examples 1-5 and comparative examples 1-2
As can be seen from the data in Table 2, the spinning oil prepared by the invention has good stability, but if the added oil film stabilizer is too little aspartic acid (example 5) in the preparation process, the stability of the spinning oil prepared by the preparation is poor, and oil slivers are easy to occur; the bundling property of the full extinction FDY fiber also meets the processing requirement, and the antistatic property is not higher than 4.98X10 8 The excellent data of the surface tension and wetting speed of each spin finish, which are lower than those of the comparative examples, indicate that the spin finish has higher oiling speed in the full-dull FDY fiber processing stageA rate; however, if the amino group is excessive in the oil film stabilizer (example 4), the surface tension and wetting speed of the corresponding spin finish are both optimal, but the antistatic property of the spin finish is affected to some extent.
In conclusion, the spinning oil for the full-dull FDY fiber provided by the invention has better stability, and the excellent antistatic property and wettability enable the full-dull FDY fiber to be suitable for the full-dull FDY fiber, so that the FDY fiber has better performance.

Claims (9)

1. The spinning oil for the full-dull FDY fiber is characterized by comprising the following components in percentage by weight: 30-43% of a smoothing agent, 45-60% of an oil film stabilizer, 2-5% of an antistatic agent and 5-8% of an emulsifying agent; the preparation method of the oil film stabilizer comprises the following steps:
s1: uniformly mixing aspartic acid and di-tert-butyl dicarbonate in an alcohol solvent, removing the solvent after 2-3 hours, and washing the product by using n-hexane;
s2: introducing inert gas into a reaction kettle, adding a certain amount of 1, 4-benzenediol and the product obtained in the step S1 into the reaction kettle, mixing and dissolving at 80-90 ℃, adding a solid acid catalyst into the reaction kettle, starting stirring, heating, vacuumizing to a certain condition, and starting the reaction;
s3: after the reaction is completed, cooling to room temperature, mixing the product with an organic solvent, and adding an acid solution and continuously stirring;
s4: filtering and spin-evaporating the system after the reaction in the step S3, removing the sediment, the organic solvent and the acid solution, adding a small amount of organic solvent for dilution, adjusting the pH value of the system to be alkaline, continuously stirring, adding deionized water for a period of time, mixing, standing for layering, and taking an organic phase to obtain the oil film stabilizer.
2. The spin finish of claim 1 wherein the smoothing agent is at least one of glycerol monopalmitate, glycerol monooleate, glycerol monostearate, isooctyl oleate, lauryl oleate, isooctyl stearate, and diisooctyl sebacate.
3. The spinning oil according to claim 1, wherein the molar ratio of aspartic acid to di-tert-butyl dicarbonate in S1 is 1:1.5-2, and the alcohol solvent is at least one of methanol and ethanol.
4. The spin finish of claim 1 wherein the S2 system has a molar ratio of 1, 4-benzenediethanol to aspartic acid of 0.8 to 1.5:1 to 2.
5. The spinning oil according to claim 1, wherein in the system of S2, the solid acid catalyst is at least one of alumina, titania and zirconia, and the addition amount is 1-5% of the total mass of the system; the reaction condition is 150-200 ℃ and 70-100Pa.
6. The spin finish of claim 1 wherein in the S3 system, the organic solvent is one of tetrahydrofuran and methylene chloride and the acid solution is one of hydrochloric acid and trifluoroacetic acid.
7. The spin finish of claim 1 wherein the antistatic agent is at least one of octadecyl phosphate, polyoxyethylene alkyl phosphate.
8. The spin finish of claim 1 wherein the emulsifier is at least one of a stearate, an N-methylamide carboxylate, and a sorbitan fatty acid ester polyoxyethylene ether.
9. The method for preparing the spin finish according to any one of claims 1 to 8, comprising the steps of: adding the components monomers into a compound kettle according to the proportion, heating to 40-60 ℃, uniformly stirring for 1-2h, cooling to room temperature, adjusting the pH to 6-8, sampling, testing to be qualified, and filtering and filling; wherein the reagent for regulating the pH is at least one of triethanolamine, potassium hydroxide, sorbic acid, sodium bicarbonate and disodium hydrogen phosphate.
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CN111636200A (en) * 2020-05-11 2020-09-08 浙江恒澜科技有限公司 Terylene FDY oiling agent and preparation method thereof

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