CN111206422A - Dry-process antistatic spandex spinning oil agent and preparation method thereof - Google Patents
Dry-process antistatic spandex spinning oil agent and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a dry-method antistatic spandex spinning oil agent, which consists of a composite high-temperature smoothing agent, a composite antistatic agent, a phenol-based antioxidant, a phenylamino antioxidant, an olefine acid antioxidant, a high-temperature dispersing agent, a softening agent, an environment-friendly emulsifier, a metal stearate, a preservative and a defoaming agent, wherein the composite high-temperature smoothing agent is formed by compounding hydrogenated paraffin-based base oil, hydrogenated naphthenic base oil and methyl silicone oil. The invention also provides a preparation method of the dry-method antistatic spandex spinning oil agent. The invention ensures that spandex spinning has excellent antistatic performance under different humidity conditions, and is suitable for the requirements of high-speed spinning processes of spandex denier yarns with various specifications. The invention has good smoothness, excellent high and low temperature resistance, excellent yellowing resistance, and good dispersion and isolation performance to spandex.
Description
Technical Field
The invention belongs to the field of chemical industry, and relates to a dry spinning oil agent, in particular to a dry antistatic spandex spinning oil agent and a preparation method thereof.
Background
Polyurethane elastic fiber, namely spandex in short in the conventional name, is called as 'flavor-essence-like' textile raw material essential to the modern textile clothing industry due to excellent elasticity and good comprehensive performance, and can be used for all fabrics needing good elasticity recovery rate due to excellent elongation at break and breaking strength, so that the polyurethane elastic fiber has a good development prospect with high application value. The spandex spinning process mainly includes dry spinning, melt spinning, wet spinning, reaction spinning and the like, wherein the dry spinning yield reaches 80 percent of the total spandex yield in the world, and the spandex spinning process belongs to the main spinning methods and is typically represented by Lycra fibers of the Invidata company and Dorlastan fibers of the Bayer company.
The total yield of spandex in 2019 in China is about 85 ten thousand tons, the yield of spandex in 2013 to 2019 in China is increased by 6.63 percent in a combined yield year, and the yield tends to be further increased. Along with the increasing of the yield of the spandex, the yield of spandex spinning oil agents is correspondingly increased. The spandex oil agent is applied by an oil nozzle or a roller to form a layer of protective film on the surface of spandex fiber, so that the adhesion between the fibers is prevented. The good spandex oil agent can enable the silk threads spun after the spandex silk is oiled to have good smoothness, bundling property and antistatic property, and the inner layer and the outer layer of the spandex silk threads are good in revolving and unwinding property, continuous in silk and non-slip in the processing process after the spandex silk threads are formed into cakes.
At present, the companies for producing spandex oil mainly include the U.S. Golston company, the Japan bamboo oil and fat company and the Songbo oil and fat company abroad, and the domestic companies such as Shandong Dayi, Beijing Zhonghan Haitian Ningbo Hitachi, and the like. Although there are many companies for producing spandex spinning oil at home and abroad, the variety and specification of the oil are also many, but there are some problems of irreconcilability, such as generally poor antistatic performance of the oil in the spinning process, collapse and filament breakage of spandex filaments in the using process of the subsequent process, poor unwinding performance between the internal energy and the outer layer, slow unwinding speed and the like. For example, the spandex spinning oil agent described in patent US3717575 is composed of single mineral oil, silicone oil and amino modified silicone oil, and such oil agent is characterized in that the spun spandex has good hand feeling and smoothness, but one fatal defect is poor antistatic performance in the using process. Patent CN101525788 is to mix polydimethylsiloxane and phosphate as an antistatic agent to be added into the spinning solution, so that the product has antistatic property, but the usage amount of raw materials is large, the cost is high, the process is complex, and the practical application and popularization are not facilitated. Patent CN106521965B adopts a large amount of dimethyl silicone oil as smoothing agent and graphite alkene to use, has played antistatic effect to a certain extent, but the drawback is exactly that the cost promotes by a wide margin, is unfavorable for promoting equally. Patent CN104372446A adopts quaternary ammonium salt cationic surfactant as antistatic agent added into oil agent, which has a certain antistatic property, but the defects of edge collapse, filament breakage and poor unwinding property are easy to occur in later use, and the requirement in the actual spandex spinning process can not be completely met.
Disclosure of Invention
The invention aims to provide a dry-method antistatic spandex spinning oil agent and a preparation method thereof, and aims to solve the technical problems that the antistatic performance of the oil agent in the prior art in the spinning process is generally poor, spandex yarns have edge collapse and yarn breakage in the using process of the subsequent process, the unwinding performance of internal energy and the external layer is poor, the unwinding speed is low, and the like.
The invention provides a dry-method antistatic spandex spinning oil agent, which consists of a composite high-temperature smoothing agent, a composite antistatic agent, a phenol-based antioxidant, a phenylamino antioxidant, an olefine acid antioxidant, a high-temperature dispersing agent, a softening agent, an environment-friendly emulsifier, a metal stearate, a preservative and a defoaming agent, wherein the composite high-temperature smoothing agent is formed by compounding hydrogenated paraffin-based base oil, hydrogenated naphthenic base oil and methyl silicone oil;
in the dry antistatic spandex spinning oil, the weight percentage of the hydrogenated paraffin base oil is 45-55%, the weight percentage of the hydrogenated cycloalkyl base oil is 15-25%, the weight percentage of the methyl silicone oil is 5-10%, the weight percentage of the composite antistatic agent is 4-8%, the weight percentage of the phenol antioxidant is 0.5-1%, the weight percentage of the phenylamino antioxidant is 0.2-0.5%, the weight percentage of the olefinic acid antioxidant is 0.2-1%, the weight percentage of the high-temperature dispersant is 0.5-2%, the weight percentage of the softener is 1-2%, the weight percentage of the environment-friendly emulsifier is 2-6%, the weight percentage of the metal stearate is 0.1-0.3%, the weight percentage of the preservative is 0.1-0.5%, the weight percentage of the defoaming agent is 0.1-0.5%, in the hydrogenated paraffin base oil, 65% of Cp is more than 56%, in the hydrogenated naphthenic base oil, 50% of Cp is more than 42%, and Cp refers to the percentage of the carbon atoms in long-chain and branched-chain saturated hydrocarbon in the base oil to the total carbon atoms in a carbon skeleton.
Further, the kinematic viscosity of the hydrogenated paraffin base oil at 40 ℃ is 10-18mm2/s。
Further, the kinematic viscosity of the hydrogenated naphthenic base oil at 40 ℃ is 10-20mm2/s。
Further, the methyl silicone oil is dimethyl silicone oil with the kinematic viscosity of 1000-1200cSt (centistokes) at 40 ℃.
Furthermore, the composite antistatic agent consists of a first component, a second component and a third component, wherein the weight ratio of the first component to the second component to the third component is 1: 1: 2, the first component is a mixture of octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate and ethylene oxide, or the first component is a mixture of alkylamine and ethylene oxide; the second component is high-alcohol polyoxyethylene ether phosphate potassium salt or isomeric alcohol polyoxyethylene ether phosphate potassium salt; the third component consists of polyether silicone oil and isomeric alcohol polyoxyethylene ether, wherein the weight ratio of the polyether silicone oil to the isomeric alcohol polyoxyethylene ether is 1: 1.2.
furthermore, the preparation process of the composite antistatic agent comprises the steps of weighing the first component, the second component and the third component according to the weight ratio, heating the third component to 40-60 ℃, then sequentially adding the first component and the second component, and fully stirring to obtain the composite antistatic agent.
Furthermore, the phenolic antioxidant is any one or a mixture of two of liquid high molecular methyl bisphenol antioxidant 2, 6-di-tert-butylphenol, 4-methyl bis (2, 6-di-tert-butylphenol) and 2, 6-di-tert-butyl-p-cresol.
Further, the phenylamino antioxidant is liquid octyl-butyl diphenylamine.
Furthermore, the olefine acid antioxidant is docosapentaenoic acid and tricosa pentaenoic acid.
Further, the high-temperature dispersant is polyisobutylene polysuccinimide or a mixture of polyisobutylene succinimide.
Further, any one or a mixture of two of the softener polyether modified organic silicon emulsion and the amino modified organic silicon emulsion.
Further, the environment-friendly emulsifier is a mixture of any two of a polyether high molecular compound, straight-chain fatty alcohol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and lauric acid polyoxyethylene ester.
Furthermore, the metal stearate is a mixture of any two of barium stearate, magnesium stearate, zinc stearate and calcium stearate.
Furthermore, the preservative is a mixture of any one of imidazole compounds and carboxylate salts, and imidazole compounds and borate salts.
Further, the defoaming agent is one or a mixture of tributyl phosphate and methyl siloxane.
The invention further provides a preparation method of the dry-method antistatic spandex spinning oil agent, which comprises a step of preparing 65% Cp >56% of hydrogenated paraffin-based base oil and a step of preparing 50% Cp >42% of hydrogenated naphthenic-based base oil, wherein after the two steps are completed, the hydrogenated paraffin-based base oil, the hydrogenated naphthenic-based base oil, methyl silicone oil, a composite antistatic agent, a phenol-based antioxidant, a phenylamino antioxidant, an olefine acid antioxidant, a high-temperature dispersing agent, a softening agent, an environment-friendly emulsifier, a metal stearate, a preservative and an antifoaming agent are weighed according to weight percentage, and refined clay is weighed at the same time, and the weight of the refined clay is the hydrogenated paraffin-based base oil, the hydrogenated naphthenic-based base oil, the methyl silicone oil, the composite antistatic agent, the phenol-based antioxidant, the phenylamino antioxidant, the olefine acid antioxidant, the high-temperature dispersing agent, 2% -6% of the total weight of the softening agent, the environment-friendly emulsifier, the metal stearate, the preservative and the defoaming agent, then adding the hydrogenated paraffin base oil, the hydrogenated naphthenic base oil and the methyl silicone oil into a first reaction kettle, then heating to 110-130 ℃, adding the refined argil, simultaneously stirring, refining and adsorbing for 30-60 min until the adsorption reaction is uniform, filtering the precipitate by a filter, pumping into a second reaction kettle, cooling to 50-70 ℃, adding the environment-friendly emulsifier and the metal stearate, uniformly stirring, then adding the composite antistatic agent, the phenol-based antioxidant, the phenylamino antioxidant, the olefine acid antioxidant, the high-temperature dispersant, the softening agent, the preservative and the defoaming agent into the second reaction kettle, uniformly stirring, and cooling to obtain the dry-process antistatic spandex spinning oil agent.
Further, the first reaction kettle and the second reaction kettle are processed for 1-3 times by adopting a vacuum pump to circulate vacuum and have a negative pressure of 0.75-1.0 KPa.
Further, the preparation method is 65 percent>Cp>In the step of 56% of hydrogenated paraffin base oil, firstly, alkane, monocyclic aromatic hydrocarbon, polycyclic aromatic hydrocarbon and unsaturated chain hydrocarbon fraction are used as raw materials, hydrofining is carried out, the unsaturated chain hydrocarbon fraction accounts for 30-90% of the weight of the raw materials, the reaction pressure of a reaction kettle in the hydrofining process is 4-12 MPa, the reaction temperature is 250-340 ℃, the total space velocity of oil feeding is 0.2-0.55/h, the volume ratio of reaction hydrogen to oil is 650-850, and the hydrogenation catalytic treatment basic oil is carried out on the raw materialsThe space velocity of the catalyst is 0.4-0.75/h, relative to the space velocity of the hydrofining catalyst is 0.6-1.75/h, the catalyst in the hydrofining process is Ni-W/AL2O3Or Ni-Mo-W/AL2O3Or Ni-Mo-Co/AL2O3Then, carrying out atmospheric and vacuum distillation, wherein the vacuum distillation process is carried out with residual pressure of 1-55 mmHg, and cutting distillate oil with normal pressure of 200-280 ℃ to obtain 65 percent>Cp>56% of hydrogenated paraffinic base oil.
Further, the preparation is 50 percent>Cp>In the 42% naphthenic base oil step, firstly, alkane, monocyclic aromatic hydrocarbon, polycyclic aromatic hydrocarbon and unsaturated chain hydrocarbon fractions are used as raw materials, hydrofining is carried out, the unsaturated chain hydrocarbon fractions account for 40-80% of the raw materials by weight, the reaction pressure of a reaction kettle in the hydrofining process is 4.5-12 MPa, the reaction temperature is 230-330 ℃, the total space velocity of oil feeding is 0.25-0.55/h, the volume ratio of reaction hydrogen to oil is 650-900, the space velocity relative to a hydrotreating catalyst is 0.35-0.8/h, the space velocity relative to a hydrofining catalyst is 0.5-1.75/h, and the catalyst in the hydrofining process is Ni-W/AL2O3Or Ni-Mo-W/AL2O3Or Ni-Mo-Co/AL2O3Then, carrying out atmospheric and vacuum distillation, wherein the vacuum distillation process is that the residual pressure is 1-55 mmHg, and cutting distillate oil with the normal pressure of 220-320 ℃ to obtain 50 percent>Cp>42% naphthenic oil.
Further, the purified clay is activated clay with the activity degree of more than 180 mmol/kg.
The invention fully utilizes the high flash point and low temperature performance of 65 percent > Cp >56 percent of aromatic hydrocarbon hydrogenated paraffin base oil, 50 percent > Cp >42 percent of aromatic hydrocarbon hydrogenated naphthenic base oil and methyl silicone oil when the aromatic hydrocarbon hydrogenated paraffin base oil and the methyl silicone oil are compounded according to the proportion, reduces the proportion of aromatic hydrocarbon with low flash point in the high-temperature smoothing agent as much as possible, effectively exerts the advantages and functions of the respective structures and improves the high temperature resistance of the smoothing agent. The high-temperature-resistant smoothing agent is a component with the largest content, so that the proper friction coefficient between fibers and between the fibers and other contact parts of machinery is ensured, and the smooth spinning and drawing are ensured.
The antistatic agent is one of important components in a spandex spinning oil agent, fatty alcohol polyoxyethylene ether phosphate and fatty alcohol phosphate are commonly used as antistatic agents in the domestic spinning oil agent, the antistatic agent has a good antistatic effect only under the condition of high humidity, the antistatic effect is greatly reduced under the condition of low humidity, static charges accumulated on tows cannot be conducted out in time, broken ends, broken wool and collapsed edges are caused, the antistatic agent has a poor heat-resistant effect and can easily generate a coking phenomenon after long-term use, β -alkylsulfonate, higher alcohol polyoxyethylene ether phosphate potassium salt and isoalcohol polyoxyethylene ether phosphate potassium salt are mixed, the antistatic agent has a better effect than a first antistatic agent but cannot completely solve the defects in use, the antistatic agent is prepared by compounding a first component, a second component and a third component in a weight ratio of 1: 1: 2, the first component is octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate and ethylene oxide, or the first component and the second component are epoxy alkyl amine, the first component and the second component are mixed according to the first, the second component is prepared by adding a second component, the first component and the second component, the isoalcohol polyoxyethylene ether phosphate is prepared by mixing the first component, the second component and the isoalcohol polyoxyethylene ether phosphate salt, the first component is prepared by a second component, the isoalcohol polyoxyethylene ether phosphate salt, the second component is prepared by a third component, the isoalcohol polyoxyethylene ether phosphate salt is prepared by a good heat-isoalcohol polyoxyethylene ether, the heat-isoalcohol polyoxyethylene ether, the first component is prepared by adding the isoalcohol polyoxyethylene ether, the first component is prepared by a second isoalcohol polyoxyethylene ether, the isoalcohol polyoxyethylene ether phosphate salt prepared by the first component is prepared by the isoalcohol polyoxyethylene ether, the second component is prepared by the first component and the second component is prepared by the second isoalcohol polyoxyethylene ether, the isoalcohol iso.
The antioxidant is an important additive for ensuring that the spinning oil is not oxidized or is only slowly oxidized in the storage and use processes of the spinning solution, the traditional spinning oil basically does not use the antioxidant or only uses a single antioxidant in order to reduce the cost, the effect is not obvious, and the oil on the fiber yarn is easy to oxidize to enable the yarn to be easy to turn yellow and not easy to rinse. The invention adopts antioxidants with different types for compound use, fully exerts the characteristic of more effectively improving the antioxidant effect when the phenylamino antioxidant, the phenolic ester antioxidant and the olefine acid antioxidant are used in a compound way, ensures that the drawn silk is not yellowed, and simultaneously ensures that the drawn silk is easy to rinse when used in the next procedure.
In order to solve the problem, the invention particularly selects the polyisobutylene compound as the dispersant, so that the prepared spinning solution has low blocking coefficient, is beneficial to smooth fiber drawing, and has high temperature resistance and smoothness.
The softening agent can be adsorbed on the surface of the fiber, so that the surface of the fiber is smooth, the hand feeling and the touch feeling can be improved, and the pulled mercerized yarn is smooth and beautiful. Besides the functions, the selected softening agent has great promotion effect on improving the smoothness of the spinning oil agent, the antifouling capability of spinning and the antistatic property.
The emulsifier has good affinity performance to the hydrophobic group and the emulsified substance, and simultaneously keeps larger hydrophilic performance, and forms a uniform and organic stable equilibrium state with the emulsified substance through corresponding physical and chemical reaction, so that the integral spinning oil forms a stable and uniform emulsion. The emulsifier selected by the invention has normal emulsification function, and also has environmental protection effect, the product does not contain APEO, and the additive not only maintains the environmental protection effect, but also has unusual performance in the aspect of heat resistance.
In order to solve the problems, the invention selects metal stearate as an additive to be compounded with a dispersing agent, effectively solves the problems of stable storage, difficult color change and important corrosion resistance of the spinning oil, and does not cause the blockage of spinning stock solution in a pipeline in the using process.
Some spinning oil products in the current market are not added with preservatives basically, or some temporary preservatives which are harmful aldehydes even if added, because the spinning oil is stored under different conditions, the spinning oil is easy to rot once stored badly, and bad results are brought to production, and the putrefaction of the oil and the emulsion can be greatly delayed by adding the preservatives, and the storage stability of the oil can be ensured. The invention selects the imidazole compound as the preservative, and simultaneously adopts a proper amount of amine carboxylate or amine borate preservative in an auxiliary way, thereby effectively improving the preservative effect on the spinning oil.
The spinning oil agent is easy to generate bubbles in the temperature rise use process, the bubbles have important influence on the uniformity and smoothness of fiber drawing, and the defoaming agent plays an important role in controlling the generation of bubbles and ensuring the normal play of the oil agent effect in the spinning and drawing process in stock solution. The defoaming agent selected by the invention can ensure that the good defoaming effect of the spinning oil in use can be effectively controlled.
High-temperature smoothing agents (hydrogenated paraffin-based base oil, hydrogenated cycloalkyl base oil) containing aromatic hydrocarbons, naphthenic hydrocarbons, long-chain and branched-chain saturated hydrocarbons can be divided into three types according to the type of a skeleton formed by a carbon-carbon linking mode:
To express the type of carbon atom in the carbon skeleton, the carbon type analysis-C is usedA、CNCp. To effectively illustrate the difference between the hydrogenated paraffinic oil fraction and the hydrogenated naphthenic oilThe following carbon chain skeleton is now used for illustration:
6 (1# -6#) aromatic ring carbons CA=24%;
8 naphthenic carbons (7# -14#) CN=32%;
And 11 (15# -25#) chain ring carbons, and Cp is 44%.
1) Compared with the prior art, the dry antistatic spandex spinning oil agent has the following positive and obvious advantages. The spin finish has a stable kinematic viscosity. The kinematic viscosity of the product at 40 ℃ is measured to be 11-15 mm2/s by GB/T265, the kinematic viscosity of the traditional product at 40 ℃ is measured to be 8-25 mm2/s, and the event proves that the effect of the product at 40 ℃ with stable kinematic viscosity is the best when the product is stabilized at 12-14 mm 2/s. When the kinematic viscosity of the product at 40 ℃ is less than 12mm 2/hour, the viscosity is too low, so that the oiling rate is too low, the smoothness is reduced, and the yarn breakage is easy; when the kinematic viscosity of the product at 40 ℃ is more than 14mm 2/hour, the viscosity is too large, the oiling rate is too high, the spinning speed is reduced due to too large viscosity, the consumption of an oiling agent is increased due to too high oiling rate, the production cost is increased, and the consumption of a chemical cleaning agent is increased in the subsequent cleaning process to pollute the environment, so that the stable oiling rate of wire drawing in the spinning process is ensured by the proper kinematic viscosity of the product, and the stability of the spinning quality is also ensured.
2) The spinning oil has excellent antistatic effect. The spinning oil has excellent antistatic effect under various humidity conditions, especially under dry spinning conditions, the unwinding tension inside and outside the spinning cake is uniform, yarn falling and yarn breaking are not easy, and the comprehensive unwinding performance in the subsequent processing process is optimized.
3) The spinning oil has good heat resistance. The open flash point of the product is 216-225 ℃ measured by a GB/T3536 method, and the flash point of the traditional product is 155-190 ℃. The spinning and drawing production can be operated normally, and the spinning and drawing device is suitable for high-speed spinning processes of various specifications including thick and thin fibers, and is free from smoke and coking on hot rolls.
4) The spinning oil agent has good wettability, adhesiveness, permeability and yellowing resistance. The product is not easy to cause the fiber to be dyed yellow and is easy to rinse subsequently.
5) The spinning oil has good smoothness, dispersion and anti-blocking performance. The isolation effect between the spandex yarns effectively avoids mutual adhesion, the bundling performance of spinning is good, and the spinning cake forming is facilitated, and the silk yarns are prevented from slipping off.
6) The spin finish has a high degree of stability. The performance is stable in the spinning production process, the dilution stability and the shearing stability are excellent, and the ends are not broken in the spinning process.
7) The spinning oil agent has strong anti-foaming performance. The foam is not easy to generate in the production process, the oiling is uniform, and the smooth spinning is facilitated.
8) The spinning oil has good forming, good bundle loosening, good storage resistance and good use stability. The preservative added into the product can effectively prolong the service time of the emulsion, and has no layering and no putrefaction and peculiar smell.
9) The spin finish has excellent properties.
10) The spinning oil has excellent environmental protection performance. The product does not contain APEO limited by the Oeko-Tex Standard 100 spinning industry, and meets the national environmental protection requirement and export Standard.
11) The product enables the spandex to smoothly pass through the post-spinning weaving of various devices, and effectively improves the yield and the excellent rate of spandex spinning.
12) The dry method spandex spinning oil agent has excellent antistatic performance, economical and practical cost and simple production and manufacturing process.
The specific implementation mode is as follows:
example 1
The invention relates to a dry-method antistatic spandex spinning oil agent, which consists of a composite high-temperature smoothing agent, a composite antistatic agent, a phenol-based antioxidant, a phenylamino antioxidant, an olefine acid antioxidant, a high-temperature dispersing agent, a softening agent, an environment-friendly emulsifier, a metal stearate, a preservative and a defoaming agent, wherein the composite high-temperature smoothing agent is formed by compounding hydrogenated paraffin-based base oil, hydrogenated naphthenic base oil and methyl silicone oil. In the dry antistatic spandex spinning oil, the weight percentage of the hydrogenated paraffin base oil is 51 percent, the weight percentage of the hydrogenated naphthenic base oil is 25 percent, the weight percentage of the methyl silicone oil is 8 percent, the weight percentage of the composite antistatic agent is 7 percent, the weight percentage of the phenol antioxidant is 0.5 percent, the weight percentage of the phenylamino antioxidant is 0.5 percent, the weight percentage of the olefine acid antioxidant is 0.8 percent, the weight percentage of the high-temperature dispersing agent is 1%, the weight percentage of the softening agent is 1.6%, the weight percentage of the environment-friendly emulsifier is 4.1%, the weight percentage of the metal stearate is 0.1%, the weight percentage of the preservative is 0.4%, and the weight percentage of the defoamer is 0.3%. In the hydrogenated paraffinic base oil, 65% > Cp >56%, in the hydrogenated naphthenic base oil, 50% > Cp >42%, Cp being the percentage of carbon atoms in the long-chain and branched saturated hydrocarbons of the base oil to the total carbon atoms in the carbon skeleton.
Further, the kinematic viscosity of the hydrogenated paraffin base oil at 40 ℃ is 10-18mm2/s。
Further, the kinematic viscosity of the hydrogenated naphthenic base oil at 40 ℃ is 10-20mm2/s。
Further, the methyl silicone oil is dimethyl silicone oil with the kinematic viscosity of 1000-1200cSt (centistokes) at 40 ℃.
Furthermore, the composite antistatic agent consists of a first component, a second component and a third component, wherein the weight ratio of the first component to the second component to the third component is 1: 1: 2, the first component is a mixture of octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate and ethylene oxide; the second component is isomeric alcohol polyoxyethylene ether phosphate potassium salt; the third component consists of polyether silicone oil and isomeric alcohol polyoxyethylene ether, wherein the weight ratio of the polyether silicone oil to the isomeric alcohol polyoxyethylene ether is 1: 1.2.
further, the preparation process of the composite antistatic agent comprises the steps of weighing the first component, the second component and the third component according to the weight ratio, heating the third component to 40-60 ℃, sequentially adding the first component and the second component, and fully stirring to obtain the composite antistatic agent.
Furthermore, the phenolic antioxidant is liquid macromolecular methyl bisphenol antioxidant 2, 6-di-tert-butylphenol.
Further, the phenylamino antioxidant is liquid octyl-butyl diphenylamine.
Further, the olefine acid antioxidant is docosapentaenoic acid.
Further, the high-temperature dispersant is polyisobutylene succinimide.
Furthermore, the softener polyether modified organic silicon emulsion.
Furthermore, the environment-friendly emulsifier is a mixture of a polyether high molecular compound and polyoxyethylene laurate.
Further, the metal stearate is a mixture of barium stearate and zinc stearate.
Further, the preservative is a mixture of imidazole compounds and carboxylate salts.
Further, the defoaming agent is tributyl phosphate.
Example 2
The invention relates to a dry-method antistatic spandex spinning oil agent, which consists of a composite high-temperature smoothing agent, a composite antistatic agent, a phenol-based antioxidant, a phenylamino antioxidant, an olefine acid antioxidant, a high-temperature dispersing agent, a softening agent, an environment-friendly emulsifier, a metal stearate, a preservative and a defoaming agent, wherein the composite high-temperature smoothing agent is formed by compounding hydrogenated paraffin-based base oil, hydrogenated naphthenic base oil and methyl silicone oil. In the dry antistatic spandex spinning oil, the weight percentage of the hydrogenated paraffin base oil is 54 percent, the weight percentage of the hydrogenated naphthenic base oil is 21 percent, the weight percentage of the methyl silicone oil is 7 percent, the weight percentage of the composite antistatic agent is 8 percent, the weight percentage of the phenol antioxidant is 0.6 percent, the weight percentage of the phenylamino antioxidant is 0.4 percent, the weight percentage of the olefine acid antioxidant is 0.3 percent, the weight percentage of the high-temperature dispersing agent is 1.5%, the weight percentage of the softening agent is 1.2%, the weight percentage of the environment-friendly emulsifier is 5.5%, the weight percentage of the metal stearate is 0.2%, the weight percentage of the preservative is 0.3%, and the weight percentage of the defoaming agent is 0.4%. In the hydrogenated paraffinic base oil, 65% > Cp >56%, in the hydrogenated naphthenic base oil, 50% > Cp >42%, Cp being the percentage of carbon atoms in the long-chain and branched saturated hydrocarbons of the base oil to the total carbon atoms in the carbon skeleton.
Further, the kinematic viscosity of the hydrogenated paraffin base oil at 40 ℃ is 10-18mm2/s。
The kinematic viscosity of the hydrogenated naphthenic base oil at 40 ℃ is 10-20mm2/s。
Further, the methyl silicone oil is dimethyl silicone oil with the kinematic viscosity of 1000-1200cSt (centistokes) at 40 ℃.
Furthermore, the composite antistatic agent consists of a first component, a second component and a third component, wherein the weight ratio of the first component to the second component to the third component is 1: 1: 2, the first component is a mixture of octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate and ethylene oxide; the second component is isomeric alcohol polyoxyethylene ether phosphate potassium salt; the third component consists of polyether silicone oil and isomeric alcohol polyoxyethylene ether, wherein the weight ratio of the polyether silicone oil to the isomeric alcohol polyoxyethylene ether is 1: 1.2.
further, the preparation process of the composite antistatic agent comprises the steps of weighing the first component, the second component and the third component according to the weight ratio, heating the third component to 40-60 ℃, sequentially adding the first component and the second component, and fully stirring to obtain the composite antistatic agent.
Furthermore, the phenolic antioxidant is a mixture of liquid high-molecular methyl bisphenol antioxidant 2, 6-di-tert-butylphenol and 4, 4-methyl bis (2, 6-di-tert-butylphenol).
Further, the phenylamino antioxidant is liquid octyl-butyl diphenylamine.
Further, the olefine acid antioxidant is eicosapentaenoic acid.
Furthermore, the high-temperature dispersant is a mixture of polyisobutylene succinimide and polyisobutylene succinimide.
Furthermore, the softener polyether modified organic silicon emulsion and the amino modified organic silicon emulsion are a mixture.
Furthermore, the environment-friendly emulsifier is a mixture of straight-chain fatty alcohol polyoxyethylene ether and isomeric alcohol polyoxyethylene ether.
Furthermore, the metal stearate is a mixture of barium stearate and magnesium stearate.
Further, the preservative is a mixture of imidazole compounds and amine borate salts.
Further, the defoaming agent is a mixture of tributyl phosphate and methyl siloxane.
Example 3
The invention relates to a dry-method antistatic spandex spinning oil agent, which consists of a composite high-temperature smoothing agent, a composite antistatic agent, a phenol-based antioxidant, a phenylamino antioxidant, an olefine acid antioxidant, a high-temperature dispersing agent, a softening agent, an environment-friendly emulsifier, a metal stearate, a preservative and a defoaming agent, wherein the composite high-temperature smoothing agent is formed by compounding hydrogenated paraffin-based base oil, hydrogenated naphthenic base oil and methyl silicone oil. In the dry antistatic spandex spinning oil, the weight percentage of the hydrogenated paraffin base oil is 52 percent, the weight percentage of the hydrogenated naphthenic base oil is 22 percent, the weight percentage of the methyl silicone oil is 10 percent, the weight percentage of the composite antistatic agent is 6 percent, the weight percentage of the phenol antioxidant is 0.8 percent, the weight percentage of the phenylamino antioxidant is 0.3 percent, and the weight percentage of the olefine acid antioxidant is 0.5 percent, the weight percentage of the high-temperature dispersing agent is 1.2%, the weight percentage of the softening agent is 1.4%, the weight percentage of the environment-friendly emulsifier is 5.4%, the weight percentage of the metal stearate is 0.2%, the weight percentage of the preservative is 0.2%, and the weight percentage of the defoaming agent is 0.5%. In the hydrogenated paraffinic base oil, 65% > Cp >56%, in the hydrogenated naphthenic base oil, 50% > Cp >42%, Cp being the percentage of carbon atoms in the long-chain and branched saturated hydrocarbons of the base oil to the total carbon atoms in the carbon skeleton.
Further, the kinematic viscosity of the hydrogenated paraffin base oil at 40 ℃ is 10-18mm2/s。
Further, the kinematic viscosity of the hydrogenated naphthenic base oil at 40 ℃ is 10-20mm2/s。
Further, the methyl silicone oil is dimethyl silicone oil with the kinematic viscosity of 1000-1200cSt (centistokes) at 40 ℃.
Furthermore, the composite antistatic agent consists of a first component, a second component and a third component, wherein the weight ratio of the first component to the second component to the third component is 1: 1: 2, the first component is a mixture of octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate and ethylene oxide; the second component is high-alcohol polyoxyethylene ether phosphate potassium salt; the third component consists of polyether silicone oil and isomeric alcohol polyoxyethylene ether, wherein the weight ratio of the polyether silicone oil to the isomeric alcohol polyoxyethylene ether is 1: 1.2.
further, the preparation process of the composite antistatic agent comprises the steps of weighing the first component, the second component and the third component according to the weight ratio, heating the third component to 40-60 ℃, sequentially adding the first component and the second component, and fully stirring to obtain the composite antistatic agent.
Furthermore, the phenolic antioxidant is liquid macromolecular methyl bisphenol antioxidant 2, 6-ditert-butyl-p-cresol.
Further, the phenylamino antioxidant is liquid octyl-butyl diphenylamine.
Further, the olefine acid antioxidant is eicosapentaenoic acid.
Further, the high-temperature dispersant is polyisobutylene succinimide and a mixture of polyisobutylene succinimide.
Further, the mixture of the softening agent polyether modified organic silicon emulsion and the amino modified organic silicon emulsion.
Furthermore, the environment-friendly emulsifier is a mixture of straight-chain fatty alcohol-polyoxyethylene ether and polyoxyethylene laurate.
Furthermore, the metal stearate is a mixture of magnesium stearate and zinc stearate.
Further, the preservative is a mixture of imidazole compounds and carboxylate salts.
Further, the defoaming agent is a mixture of tributyl phosphate and methyl siloxane.
Example 4
The invention relates to a dry-method antistatic spandex spinning oil agent, which consists of a composite high-temperature smoothing agent, a composite antistatic agent, a phenol-based antioxidant, a phenylamino antioxidant, an olefine acid antioxidant, a high-temperature dispersing agent, a softening agent, an environment-friendly emulsifier, a metal stearate, a preservative and a defoaming agent, wherein the composite high-temperature smoothing agent is formed by compounding hydrogenated paraffin-based base oil, hydrogenated naphthenic base oil and methyl silicone oil. In the dry antistatic spandex spinning oil, the weight percentage of the hydrogenated paraffin base oil is 55 percent, the weight percentage of the hydrogenated naphthenic base oil is 18 percent, the weight percentage of the methyl silicone oil is 9 percent, the weight percentage of the composite antistatic agent is 7 percent, the weight percentage of the phenol antioxidant is 1 percent, the weight percentage of the phenylamino antioxidant is 0.2 percent, the weight percentage of the olefine acid antioxidant is 0.6 percent, the weight percentage of the high-temperature dispersing agent is 1.8%, the weight percentage of the softening agent is 1.8%, the weight percentage of the environment-friendly emulsifier is 4.8%, the weight percentage of the metal stearate is 0.3%, the weight percentage of the preservative is 0.5%, and the weight percentage of the defoaming agent is 0.2%. In the hydrogenated paraffinic base oil, 65% > Cp >56%, in the hydrogenated naphthenic base oil, 50% > Cp >42%, Cp being the percentage of carbon atoms in the long-chain and branched saturated hydrocarbons of the base oil to the total carbon atoms in the carbon skeleton.
Further, the kinematic viscosity of the hydrogenated paraffin base oil at 40 ℃ is 10-18mm2/s。
Further, the kinematic viscosity of the hydrogenated naphthenic base oil at 40 ℃ is 10-20mm2/s。
Further, the methyl silicone oil is dimethyl silicone oil with the kinematic viscosity of 1000-1200cSt (centistokes) at 40 ℃.
Furthermore, the composite antistatic agent consists of a first component, a second component and a third component, wherein the weight ratio of the first component to the second component to the third component is 1: 1: 2, the first component is a mixture of alkylamine and ethylene oxide; the second component is high-alcohol polyoxyethylene ether phosphate potassium salt; the third component consists of polyether silicone oil and isomeric alcohol polyoxyethylene ether, wherein the weight ratio of the polyether silicone oil to the isomeric alcohol polyoxyethylene ether is 1: 1.2.
further, the preparation process of the composite antistatic agent comprises the steps of weighing the first component, the second component and the third component according to the weight ratio, heating the third component to 40-60 ℃, sequentially adding the first component and the second component, and fully stirring to obtain the composite antistatic agent.
Furthermore, the phenolic antioxidant is a mixture of liquid macromolecular methyl bisphenol antioxidant 4, 4-methyl bis (2, 6-di-tert-butylphenol) and 2, 6-di-tert-butyl-p-cresol.
Further, the phenylamino antioxidant is liquid octyl-butyl diphenylamine.
Further, the olefine acid antioxidant is docosapentaenoic acid.
Further, the high-temperature dispersant is polyisobutylene succinimide.
Furthermore, the softener polyether modified organic silicon emulsion.
Furthermore, the environment-friendly emulsifier is a mixture of a polyether high molecular compound and isomeric alcohol polyoxyethylene ether.
Furthermore, the metal stearate is a mixture of magnesium stearate and calcium stearate.
Further, the preservative is a mixture of imidazole compounds and any one of amine borate salts.
Further, the defoaming agent is methyl siloxane.
Examples 1-4 were all prepared using the following procedure:
the preparation method of the dry-method antistatic spandex spinning oil agent comprises a step of preparing 65% Cp >56% of hydrogenated paraffin-based base oil and a step of preparing 50% Cp >42% of hydrogenated naphthenic base oil, wherein after the two steps are completed, the hydrogenated paraffin-based base oil, the hydrogenated naphthenic base oil, the methyl silicone oil, the composite antistatic agent, the phenol-based antioxidant, the phenylamino antioxidant, the olefine acid antioxidant, the high-temperature dispersing agent, the softening agent, the environment-friendly emulsifier, the metal stearate, the preservative and the defoaming agent are weighed according to weight percentage, and refined clay is weighed at the same time, and the weight of the refined clay is the hydrogenated paraffin-based base oil, the hydrogenated naphthenic base oil, the methyl silicone oil, the composite antistatic agent, the phenol-based antioxidant, the phenylamino antioxidant, the olefine acid antioxidant, the high-temperature dispersing agent, the softening agent, the environment-friendly emulsifier, 2-6% of the total weight of the metal stearate, the preservative and the defoaming agent, then adding the hydrogenated paraffin base oil, the hydrogenated naphthenic base oil and the methyl silicone oil into a first reaction kettle, heating to the temperature of 110-130 ℃, adding the refined argil, simultaneously stirring, refining and adsorbing for 30-60 min until the adsorption reaction is uniform, filtering the precipitate for 2-3 times through a filter, pumping the precipitate into a second reaction kettle, cooling to the temperature of 50-70 ℃, adding the environment-friendly emulsifier and the metal stearate, stirring for 20-40 min, adding the composite antistatic agent, the phenol-based antioxidant, the phenylamino antioxidant, the olefine acid antioxidant, the high-temperature dispersant, the softening agent, the preservative and the defoaming agent into the second reaction kettle, stirring for 30-60 min, and cooling to obtain the product.
Further, the first reaction kettle and the second reaction kettle are processed for 1-3 times by adopting a vacuum pump to circulate vacuum and have a negative pressure of 0.75-1.0 KPa.
Further, the preparation method is 65 percent>Cp>In the step of 56% of hydrogenated paraffin base oil, firstly, alkane, monocyclic aromatic hydrocarbon, polycyclic aromatic hydrocarbon and unsaturated chain hydrocarbon fraction are used as raw materials, hydrofining is carried out, the unsaturated chain hydrocarbon fraction accounts for 30-90% of the weight of the raw materials, the reaction pressure of a reaction kettle in the hydrofining process is 4-12 MPa, the reaction temperature is 250-340 ℃, the total space velocity of oil feeding is 0.2-0.55/h, the volume ratio of reaction hydrogen to oil is 650-850, the space velocity relative to a hydrotreating catalyst is 0.4-0.75/h, the space velocity relative to the hydrofining catalyst is 0.6-1.75/h, and the catalyst in the hydrofining process is Ni-W/AL2O3Or Ni-Mo-W/AL2O3Or Ni-Mo-Co/A AL2O3Then, carrying out atmospheric and vacuum distillation, wherein the vacuum distillation process is carried out with residual pressure of 1-55 mmHg, and cutting distillate oil with normal pressure of 200-280 ℃ to obtain 65 percent>Cp>56% of hydrogenated paraffinic base oil.
Further, the preparation is 50 percent>Cp>In the 42% naphthenic base oil step, firstly, alkane, monocyclic aromatic hydrocarbon, polycyclic aromatic hydrocarbon and unsaturated chain hydrocarbon fractions are used as raw materials, hydrofining is carried out, the unsaturated chain hydrocarbon fractions account for 40-80% of the raw materials by weight, the reaction pressure of a reaction kettle in the hydrofining process is 4.5-12 MPa, the reaction temperature is 230-330 ℃, the total space velocity of oil feeding is 0.25-0.55/h, the volume ratio of reaction hydrogen to oil is 650-900, the space velocity relative to a hydrotreating catalyst is 0.35-0.8/h, the space velocity relative to a hydrofining catalyst is 0.5-1.75/h, and the catalyst in the hydrofining process is Ni-W/AL2O3Or Ni-Mo-W/AL2O3Or Ni-Mo-Co/AL2O3Then, carrying out atmospheric and vacuum distillation, wherein the vacuum distillation process is that the residual pressure is 1-55 mmHg, and cutting distillate oil with the normal pressure of 220-320 ℃ to obtain 50 percent>Cp>42% naphthenic oil.
Further, the purified clay is activated clay with the activity degree of more than 180 mmol/kg.
The physical and chemical indexes are shown in Table 1.
TABLE 1
Oiling rate test method: and (3) adopting a certain amount of spinning oil to carry out spandex spinning, recording the spinning amount and the numerical values of the spinning oil before and after spinning, and calculating the oiling rate.
The comparison of the physicochemical properties of the product of example 4 of the present invention and the domestic and foreign products which are popular in the market is shown in Table 2
TABLE 2
From table 2 it can be concluded that the pour point of the present invention is close to that of the imported product, obviously due to domestic comparison products; the flash point and the effective components are superior to imported and domestic products; the oiling rate and the viscosity have strong correlation, and the oiling rate of the invention is obviously stable and moderate.
The comparison of the measured data of the spinning process of the domestic and foreign products which are used in the embodiment 4 of the invention and are popular in the market is shown in the table 3
TABLE 3
As can be seen from table 3, the electrostatic property (KV) of example 4 of the present invention is equivalent to that of the imported product at a low speed, and the friction is decreased faster with the increase of the speed, and it is obvious that the electrostatic property of the imported product is significantly better than that of the compared product in domestic production no matter at the low speed or at the high speed, and the unique antistatic property of the product of the present invention is shown. Under the conditions of high speed and low speed, the friction F/N is equivalent to that of imported products, but is obviously superior to products compared with domestic production, and the excellent smoothness is embodied.
The comparative data of various performance tests of spandex filament spun by various oil agents are shown in Table 4
TABLE 4
As can be seen from Table 4, the 300% stress and linear density variation coefficient (%) indexes in example 4 of the present invention are equivalent to those of domestic products and are superior to those of imported products of the same type, and the dry heat recovery rate (%) is generally low due to domestic and imported products, especially imported products; the percentage elongation at break (%) and the coefficient of variation (%) of the percentage elongation at break are superior to those of similar imported products, and the range change is smaller on the indexes of surface layer unwinding property and lining unwinding property, deteriorated surface layer unwinding property and deteriorated lining unwinding property, so that the unique unwinding stability is shown.
The above description is only one embodiment of the present invention, and does not represent any limitation to the technical solution of the present invention. Any simple modification, equivalent change and modification made to the embodiment of the present invention according to the technical spirit of the present invention fall within the scope of the present invention.
The invention has the beneficial effects that: firstly, the invention gives full play to the advantages of aromatic hydrocarbon, naphthenic hydrocarbon and chain hydrocarbon contained in the product structure, and then compounds with methyl silicone oil, overcomes the defects caused by adopting single-component mineral oil in the traditional production of spinning finish oil, and greatly improves the lubricating property of spandex dry spinning; secondly, the invention adopts the composite antistatic agent, so that the spinning oil has excellent antistatic effect under various humidity and spinning speed conditions, the unwinding tension inside and outside the spinning cake is uniform, and the yarn is not easy to fall and break; thirdly, the invention fully exerts the characteristic of more effectively improving the anti-oxidation effect when the phenylamino antioxidant and the phenolic ester antioxidant are used in a compounding way, and solves the problems of color change and difficult cleaning of the filament bundles after drawing; fourthly, the product of the invention also has excellent performance in the aspects of product storage stability, solving the problem of multiple bubbles in the spinning process, solving the problem of adhesion among silk threads, and softness, hand feeling and environmental protection performance of finished spinning.
Claims (10)
1. A dry antistatic spandex spinning oil agent is characterized in that: the composite high-temperature smoothing agent is composed of a composite high-temperature smoothing agent, a composite antistatic agent, a phenol-based antioxidant, a phenylamino antioxidant, an olefine acid antioxidant, a high-temperature dispersing agent, a softening agent, an environment-friendly emulsifier, a metal stearate, a preservative and a defoaming agent, wherein the composite high-temperature smoothing agent is composed of hydrogenated paraffin-based base oil, hydrogenated naphthenic base oil and methyl silicone oil;
in the dry antistatic spandex spinning oil agent, the weight percentage of the hydrogenated paraffin base oil is 45-55%, the weight percentage of the hydrogenated cycloalkyl base oil is 15-25%, the weight percentage of the methyl silicone oil is 5-10%, the weight percentage of the composite antistatic agent is 4-8%, the weight percentage of the phenol antioxidant is 0.5-1%, the weight percentage of the phenylamino antioxidant is 0.2-0.5%, the weight percentage of the olefinic acid antioxidant is 0.2-1%, the weight percentage of the high-temperature dispersant is 0.5-2%, the weight percentage of the softener is 1-2%, the weight percentage of the environment-friendly emulsifier is 2-6%, the weight percentage of the metal stearate is 0.1-0.3%, the weight percentage of the preservative is 0.1-0.5%, the weight percentage of the defoaming agent is 0.1-0.5%, in the hydrogenated paraffin base oil, 65% of Cp is more than 56%, in the hydrogenated naphthenic base oil, 50% of Cp is more than 42%, and Cp refers to the percentage of the carbon atoms in long-chain and branched-chain saturated hydrocarbon in the base oil to the total carbon atoms in a carbon skeleton.
2. The dry antistatic spandex spin finish according to claim 1, characterized in that: the kinematic viscosity of the hydrogenated paraffin base oil at 40 ℃ is 10-18mm2S, saidThe hydrogenated naphthenic base oil has a kinematic viscosity of 10-20mm at 40 DEG C2And/s, the methyl silicone oil is dimethyl silicone oil with the kinematic viscosity of 1000-1200cSt at 40 ℃.
3. The dry antistatic spandex spin finish according to claim 1, characterized in that: the composite antistatic agent is composed of a first component, a second component and a third component, wherein the weight ratio of the first component to the second component to the third component is 1: 1: 2, the first component is selected from a mixture consisting of octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate and ethylene oxide, or the first component is selected from a mixture consisting of alkylamine and ethylene oxide; the second component is high-alcohol polyoxyethylene ether phosphate potassium salt or isomeric alcohol polyoxyethylene ether phosphate potassium salt; the third component consists of polyether silicone oil and isomeric alcohol polyoxyethylene ether, wherein the weight ratio of the polyether silicone oil to the isomeric alcohol polyoxyethylene ether is 1: 1.2.
4. the dry antistatic spandex spin finish according to claim 3, characterized in that: the preparation process of the composite antistatic agent comprises the steps of weighing the first component, the second component and the third component according to the weight ratio, heating the third component to 40-60 ℃, then sequentially adding the first component and the second component, and fully stirring to obtain the composite antistatic agent.
5. The dry antistatic spandex spin finish according to claim 1, characterized in that: the phenolic antioxidant is any one or a mixture of two of liquid high molecular methyl bisphenol antioxidant 2, 6-di-tert-butylphenol, 4-methyl bis (2, 6-di-tert-butylphenol) and 2, 6-di-tert-butyl-p-cresol; the phenylamino antioxidant is liquid octyl-butyl diphenylamine; the olefine acid antioxidant is docosapentaenoic acid and eicosapentaenoic acid; the high-temperature dispersant is polyisobutylene succinimide or a mixture of polyisobutylene succinimide; any one or a mixture of two of the softener polyether modified organic silicon emulsion and the amino modified organic silicon emulsion; the environment-friendly emulsifier is a mixture of any two of a polyether macromolecular compound, straight-chain fatty alcohol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and lauric acid polyoxyethylene ester; the metal stearate is the mixture of any two of barium stearate, magnesium stearate, zinc stearate and calcium stearate; the preservative is a mixture of imidazole compounds and any one of carboxylate, imidazole compounds and borate; the defoaming agent is one or a mixture of tributyl phosphate and methyl siloxane.
6. The method for preparing the dry antistatic spandex spinning oil of claim 1, characterized in that: the method comprises a step of preparing 65% > Cp >56% of hydrogenated paraffin-based base oil and a step of preparing 50% > Cp >42% of hydrogenated naphthenic base oil, wherein after the two steps are completed, the hydrogenated paraffin-based base oil, the hydrogenated naphthenic base oil, methyl silicone oil, a composite antistatic agent, a phenol-based antioxidant, a phenylamino antioxidant, an olefine acid antioxidant, a high-temperature dispersing agent, a softening agent, an environment-friendly emulsifier, a metal stearate, a preservative and a defoaming agent are weighed according to weight percentage, and refined clay is weighed at the same time, wherein the weight of the refined clay is 2-6% of the total weight of the hydrogenated paraffin-based base oil, the hydrogenated naphthenic base oil, the methyl silicone oil, the composite antistatic agent, the phenol-based antioxidant, the phenylamino antioxidant, the olefine acid antioxidant, the high-temperature dispersing agent, the softening agent, the environment-friendly emulsifier, the, adding hydrogenated paraffin base oil, hydrogenated naphthenic base oil and methyl silicone oil into a first reaction kettle, heating to 110-130 ℃, adding refined argil, stirring and refining for 30-60 min until the adsorption reaction is uniform, filtering the precipitate by a filter, pumping into a second reaction kettle, cooling to 50-70 ℃, adding an environment-friendly emulsifier and a metal stearate, stirring uniformly, adding a composite antistatic agent, a phenol-based antioxidant, a phenylamino antioxidant, an olefine acid antioxidant, a high-temperature dispersant, a softener, a preservative and a defoaming agent into the second reaction kettle, stirring uniformly, and cooling to obtain the dry-method antistatic spandex spinning oil.
7. The method for preparing a dry antistatic spandex spin finish according to claim 6, characterized in that: and the first reaction kettle and the second reaction kettle are treated for 1-3 times by adopting a vacuum pump to realize circulating vacuum and negative pressure of 0.75-1.0 KPa.
8. The method for preparing a dry antistatic spandex spin finish according to claim 6, characterized in that: the preparation is 65 percent>Cp>In the step of 56% of hydrogenated paraffin base oil, firstly, alkane, monocyclic aromatic hydrocarbon, polycyclic aromatic hydrocarbon and unsaturated chain hydrocarbon fraction are used as raw materials, hydrofining is carried out, the unsaturated chain hydrocarbon fraction accounts for 30-90% of the weight of the raw materials, the reaction pressure of a reaction kettle in the hydrofining process is 4-12 MPa, the reaction temperature is 250-340 ℃, the total space velocity of oil feeding is 0.2-0.55/h, the volume ratio of reaction hydrogen to oil is 650-850, the space velocity relative to a hydrotreating catalyst is 0.4-0.75/h, the space velocity relative to the hydrofining catalyst is 0.6-1.75/h, and the catalyst in the hydrofining process is Ni-W/AL2O3Or Ni-Mo-W/AL2O3Or Ni-Mo-Co/AL2O3Then, carrying out atmospheric and vacuum distillation, wherein the vacuum distillation process is carried out with residual pressure of 1-55 mmHg, and cutting distillate oil with normal pressure of 200-280 ℃ to obtain 65 percent>Cp>56% of hydrogenated paraffinic base oil.
9. The method for preparing a dry antistatic spandex spin finish according to claim 6, characterized in that: 50 percent of the preparation>Cp>In the 42% naphthenic base oil step, firstly, alkane, monocyclic aromatic hydrocarbon, polycyclic aromatic hydrocarbon and unsaturated chain hydrocarbon fractions are used as raw materials, hydrofining is carried out, the unsaturated chain hydrocarbon fractions account for 40-80% of the raw materials by weight, the reaction pressure of a reaction kettle in the hydrofining process is 4.5-12 MPa, the reaction temperature is 230-330 ℃, the total space velocity of oil feeding is 0.25-0.55/h, and the volume ratio of hydrogen oil in the reaction is650-900, the space velocity relative to the hydrotreating catalyst is 0.35-0.8/h, the space velocity relative to the hydrofining catalyst is 0.5-1.75/h, and the catalyst in the hydrofining process is Ni-W/AL2O3Or Ni-Mo-W/AL2O3Or Ni-Mo-Co/AL2O3Then, carrying out atmospheric and vacuum distillation, wherein the vacuum distillation process is that the residual pressure is 1-55 mmHg, and cutting distillate oil with the normal pressure of 220-320 ℃ to obtain 50 percent>Cp>42% naphthenic oil.
10. The method for preparing a dry antistatic spandex spin finish according to claim 6, characterized in that: the purified clay is activated clay with the activity degree of more than 180 mmol/kg.
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Address after: 2122 Waiqian Road, Jiading District, Shanghai, 201800 Patentee after: Shanghai Zhongfu Oil Group Co.,Ltd. Address before: 2122 Waiqian Road, Jiading District, Shanghai, 201800 Patentee before: SHANGHAI ZHONGFU SPECIAL OIL Co.,Ltd. |