Bio-based spin finish oil, and preparation method therefor and use thereof

Abstract

Provided in the present application are a bio-based spin finish oil, and a preparation method therefor and the use thereof. The bio-based spin finish oil comprises tetrameric ricinoleate, a non-ionic surfactant, an antioxidant and an antistatic agent. The bio-based spin finish oil provided in the present application has the characteristics of moderate viscosity and good high-temperature resistance, exhibits good affinity for polyester fibers, can improve the cohesion force and bunching property of the fibers, and does not generate smoke during a spinning process. Moreover, the bio-based spin finish oil also has the characteristics of being environmentally friendly, biologically safe and easily degraded.

Description

A bio-based spinning oil, its preparation method and application Technical Field

[0001] This application belongs to the field of spinning oil technology, specifically relating to a bio-based spinning oil, its preparation method, and its application. Background Technology

[0002] Spinning oils play a crucial role in the manufacturing of synthetic fibers. Their main functions include reducing friction, lowering fiber breakage rates, and improving fiber spinning performance; as well as reducing static electricity, improving fiber flexibility, and enhancing bundle cohesion. A good spinning oil, in addition to these properties, should also be non-absorbable by the fiber, not cause fiber swelling, not affect fiber strength and elasticity, be easy to wash off, and not affect dyeing properties, thus ensuring it does not interfere with subsequent fabrication and dyeing processes. Mineral oil emulsions are one of the earliest and most common substances used in spinning oils. US4129507A discloses a spinning oil agent comprising white oil, oxidized polyethylene wax, a surfactant, and sodium hydroxide; US4129507A discloses a smoothing agent for treating textile fiber materials comprising liquid paraffin, fatty acid esters, and a surfactant; both US4129507A and US4098703A disclose a method for preparing a spinning oil agent using white oil and an emulsifier as the main materials, wherein a certain amount of polyisobutylene is added to the formulation for thickening to increase the viscosity of the white oil.

[0003] Ester compounds are also commonly used as smoothing agents in the preparation of spinning oils. US5382372A discloses a method for preparing spinning oils using isobutyl stearate to replace white oil. This method also requires the addition of a certain amount of water-soluble macromolecules, such as polyacrylamide with a molecular weight of over 1 million, for thickening, thereby increasing the viscosity of the emulsion and the cohesion of the oil on the fibers. CN115298388A discloses a synthetic fiber treatment agent and its application. This synthetic fiber treatment agent must contain a nonionic surfactant, a smoothing agent other than a nonionic surfactant, and a low-viscosity diluent. It also contains at least one selected from organic sulfonates, organic phosphates, oil film reinforcing agents, ethylene oxide adducts of organic amines, and antioxidants. The synthetic fiber treatment agent provided by this technical solution will not clog the oil supply line even after long-term storage.

[0004] CN104562303A discloses an industrial spinning oil for FDY nylon 66 and its preparation method. The FDY nylon 66 industrial spinning oil comprises the following components by weight percentage: 4-8% animal and vegetable oleic acid, 40-60% smoothing agent, 5-10% fatty acid polyoxyethylene ether phosphate, 15-20% double-bond surfactant, 5-10% emulsifier, and the balance being deionized water. The smoothing agent is any one or two of fatty acid polyethylene glycol ester smoothing agents and polyol smoothing agents. The FDY nylon 66 industrial spinning oil provided by this technical solution exhibits good spinnability, smoothness, and cohesion at a high temperature of 220℃, with no fuzz, low breakage rate, and lower waste yarn rate than imported oils.

[0005] CN116949820A discloses a smoothing agent for POY oil-based synthetic fibers and its preparation method. The smoothing agent for POY oil-based synthetic fibers comprises, by weight, the following components: 30-50 parts dimethyl silicone oil, 5-6 parts polyethylene glycol, 4-5 parts sodium pyrophosphate, 3-5 parts silica, 5-6 parts dimethylformamide, 2-5 parts sodium oleoyl amino acid, 1-3 parts alkyl chloroamide, 6-7 parts polyethylene glycol ether, and 7-13 parts sodium dodecyl sulfonate. The smoothing agent for POY oil-based synthetic fibers provided by this technical solution can give the fibers excellent smoothness and softness.

[0006] Existing spinning oils primarily consist of mineral oil, polyether, liquid paraffin, silicone oil, or modified silicone oil, which are non-degradable. They often require the addition of non-degradable high-molecular-weight substances such as polyisobutylene, ethylene propylene rubber, or polyacrylamide to adjust viscosity. These spinning oils must be washed away during subsequent weaving and dyeing processes; otherwise, they will affect the fiber's absorption of dyes and the dyeing effect. Therefore, the non-degradable substances in the spinning oils will enter water bodies after the oils are removed during fiber washing, causing significant environmental harm.

[0007] Therefore, there is a need to develop an environmentally friendly, biodegradable bio-based spinning oil.

[0008] Summary of the Invention

[0009] This application provides a bio-based spinning oil, its preparation method, and its application. The bio-based spinning oil exhibits good affinity for polyester fibers, improving fiber cohesion and bundle bonding. Using this bio-based spinning oil during polyester spinning can reduce the average yarn breakage rate, produce no fumes, and is also environmentally friendly, biosafe, and easily degradable.

[0010] In a first aspect, this application provides a bio-based spinning oil, which includes tetrameric castor oil ester, nonionic surfactant, antioxidant, and antistatic agent.

[0011] In this application, the tetrameric ricinoleate is processed from ricinoleic acid as the main raw material. It is a yellow to light brown transparent liquid, insoluble in water but readily soluble in mineral oil and vegetable oil. The tetrameric ricinoleate has excellent lubricity, is safe, environmentally friendly, and biodegradable.

[0012] In this application, the high molecular weight of tetrameric castor oil in the bio-based spinning oil can act as an oil film reinforcing agent. Tetrameric castor oil contains a large number of ester groups, exhibiting good affinity for polyester fibers (such as PET or PTT fibers), and can also improve fiber cohesion and bundle properties. The bio-based spinning oil prepared using tetrameric castor oil as a raw material has moderate viscosity and good high-temperature resistance, eliminating the need for additional thickeners and oil film stabilizers. Using this bio-based spinning oil during polyester spinning does not generate fumes, reduces friction, lowers the average yarn breakage rate, reduces static electricity, improves fiber flexibility and bundle properties, and enhances fiber spinning performance. It also features green environmental protection, biosafety, and easy degradation.

[0013] Preferably, based on 100% of the total mass of the bio-based spinning oil, the mass percentage of the tetrameric castor oil ester is 3% to 90% (e.g., 10%, 20%, 30%, 40%, 50%, 60%, 70%, or 80%), more preferably 20% to 70%, more preferably 40% to 70%, and most preferably 50% to 60%.

[0014] In this application, the mass percentage of the tetrameric ricinoleate is preferably 3% to 90%. If the mass percentage of the tetrameric ricinoleate is less than 3%, it is easy to cause insufficient lubrication and poor oil film formation. If the amount of the tetrameric ricinoleate is higher than 90%, it is easy to cause excessive oil content in the fiber, causing the spinning roller to stick and the oil to drip.

[0015] Preferably, the nonionic surfactant includes any one or a combination of at least two of fatty alcohol polyoxyethylene ether, fatty acid polyoxyethylene ester, polysorbate (Tween) series surfactants or alkylphenol polyoxyethylene ether, and more preferably fatty alcohol polyoxyethylene ether.

[0016] Preferably, the nonionic surfactant is 5% to 10% by mass, based on 100% of the total mass of the bio-based spinning oil, for example, 5.5%, 6.0%, 6.5%, 7.0%, 7.5%, 8.0%, 8.5%, 9.0% or 9.5%, etc.

[0017] Preferably, the antioxidant includes any one or a combination of at least two of hindered phenolic antioxidants, sulfur-based antioxidants, or phosphite-based antioxidants.

[0018] Preferably, the antioxidant includes one or a combination of at least two of antioxidants 1135, 259, 1010, 1076, 565, or 168.

[0019] Preferably, based on 100% of the total mass of the bio-based spinning oil, the antioxidant has a mass percentage of 0.1% to 5%, for example, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, or 4.5%, and more preferably 0.1% to 3%.

[0020] Preferably, the antistatic agent is 0.1% to 1% by mass, based on 100% of the total mass of the bio-based spinning oil, for example, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, or 0.9%.

[0021] Preferably, the bio-based spinning oil further includes water.

[0022] Preferably, the water content is 5% to 65% of the total mass of the bio-based spinning oil, for example, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, or 60%, etc., based on 100% of the total mass of the bio-based spinning oil.

[0023] Preferably, the antistatic agent includes one or a combination of at least two of the following: antistatic agent MOA-3PK, antistatic agent B (a condensate of alkylamine and ethylene oxide), or antistatic agent Basionics LQ 01.

[0024] Preferably, the bio-based spinning oil further includes a pH adjuster. Preferably, the pH adjuster includes any one or a combination of at least two of acetic acid, citric acid, sodium hydroxide, monoethanolamine, diethanolamine, or triethanolamine.

[0025] Preferably, the pH adjuster is 0.2%-3% by mass, based on 100% of the total mass of the bio-based spinning oil, for example, 0.5%, 1.3%, 1.6%, 1.9%, 2.2%, 2.5% or 2.8% by mass.

[0026] Secondly, this application provides a method for preparing a bio-based spinning oil as described in the first aspect, the method comprising the following steps: mixing tetrameric castor oil ester, nonionic surfactant, antioxidant and antistatic agent to obtain the bio-based spinning oil.

[0027] Preferably, the mixing process further includes a step of emulsifying with water.

[0028] In this application, the bio-based spinning oil is obtained by emulsification of tetrameric castor oil ester as the main raw material, compounded with nonionic surfactants, antioxidants and antistatic agents.

[0029] Thirdly, this application provides the application of a bio-based spinning oil as described in the first aspect in polyester spinning.

[0030] Compared with the prior art, this application has the following advantages:

[0031] In this application, the bio-based spinning oil is obtained by emulsifying tetrameric castor oil ester as the main raw material, compounded with nonionic surfactants, antioxidants, and antistatic agents. The high molecular weight of tetrameric castor oil ester allows it to act as an oil film reinforcing agent. Containing numerous ester groups, it exhibits good affinity for polyester fibers and enhances fiber cohesion and bundle properties. The bio-based spinning oil has moderate viscosity and good high-temperature resistance, eliminating the need for additional thickeners and oil film stabilizers. Using this bio-based spinning oil during polyester spinning produces no fumes, reduces friction, lowers the average yarn breakage rate, reduces static electricity, improves fiber flexibility and bundle properties, and enhances fiber spinning performance. It is also environmentally friendly, biosafe, and readily degradable. Detailed Implementation

[0032] The technical solution of this application will be further described below through specific embodiments. Those skilled in the art should understand that the embodiments described are merely to help understand this application and should not be regarded as specific limitations on this application.

[0033] The sources of some components in the examples and comparative examples are as follows:

[0034] (1) Tetrameric castor oil ester, produced by Shandong Binzhou Jinsheng New Material Technology Co., Ltd.

[0035] (2) Antioxidant B

[0036] B-1: Antioxidant 1135, produced by Tianjin Lianlong New Material Co., Ltd.;

[0037] B-2: Antioxidant 259, produced by Tianjin Lianlong New Material Co., Ltd.;

[0038] B-3: Antioxidant 1010, manufactured by Tianjin Lianlong New Material Co., Ltd.

[0039] B-4: Antioxidant 1076, produced by Tianjin Lianlong New Material Co., Ltd.;

[0040] B-5: Antioxidant 565, produced by Tianjin Lianlong New Material Co., Ltd.;

[0041] B-6: Antioxidant 168, produced by Tianjin Lianlong New Material Co., Ltd.

[0042] (3) Nonionic surfactant C

[0043] C-1: Isotridecyl alcohol polyoxyethylene ether (3), MULTISO 13 / 30, manufactured by Sasol;

[0044] C-2: Isotridecyl alcohol polyoxyethylene ether (5), MULTISO 13 / 50, manufactured by Sasol;

[0045] C-3: Isotridecyl alcohol polyoxyethylene ether (7), MULTISO 13 / 70, manufactured by Sasol;

[0046] C-4: Isotridecyl alcohol polyoxyethylene ether (9), MULTISO 13 / 90, manufactured by Sasol;

[0047] C-5: Secondary alcohol polyoxyethylene ether (3), SECOL-30, produced by Jiangsu SECOL Chemical Co., Ltd.;

[0048] C-6: Secondary alcohol polyoxyethylene ether (5), SECOL-50, produced by Jiangsu SECOL Chemical Co., Ltd.;

[0049] C-7: Secondary alcohol polyoxyethylene ether (7), SECOL-70, produced by Jiangsu SECOL Chemical Co., Ltd.

[0050] (4) Antistatic agent D

[0051] D-1: Antistatic agent MOA-3PK, Haian Petrochemical;

[0052] D-2: Antistatic agent B, bis(β-hydroxyethyl)cocoamine, Haian Petrochemical;

[0053] D-3: Basionics LQ 01 antistatic agent, manufactured by BASF.

[0054] (5) pH adjuster E

[0055] E-1: Citric acid.

[0056] Example 1

[0057] This embodiment provides a bio-based spinning oil and its preparation method. The bio-based spinning oil comprises the following components by mass percentage: 30% tetrameric castor oil ester, 2% antioxidant B-1, 5% nonionic surfactant C-1, 0.1% antistatic agent D-1, and 62.9% deionized water.

[0058] The preparation method of the above-mentioned bio-based spinning oil is as follows: Tetrameric castor oil ester, antioxidant B-1, nonionic surfactant C-1 and antistatic agent D-1 are added sequentially to a 200kg stainless steel mixing tank and mixed. A high-speed homogenizer is started at 3800rpm and stirred for 20min. After adding deionized water, the mixture is stirred and homogenized for another 40min to obtain the bio-based spinning oil.

[0059] Example 2-Example 21

[0060] The same preparation method as in Example 1 was used, except for the addition of raw materials and their content, which are shown in Table 1 by mass percentage.

[0061] Table 1

[0062] Example 22

[0063] This embodiment provides a bio-based spinning oil and its preparation method. The bio-based spinning oil comprises the following components by mass percentage: 60% tetrameric castor oil ester, 1% antioxidant B-1, 10% nonionic surfactant C-1, 1% antistatic agent D-1, 0.2% pH adjuster E1, and 27.8% deionized water.

[0064] The preparation method of the above-mentioned bio-based spinning oil is as follows: Tetrameric castor oil ester, antioxidant B-1, nonionic surfactant C-1, antistatic agent D-1 and pH adjuster E1 are added sequentially to a 200kg stainless steel mixing tank and mixed to make the pH reach 7. A high-speed homogenizer is started at 3800rpm and stirred for 20min. After adding deionized water, the homogenization is continued for 40min to obtain the bio-based spinning oil.

[0065] The bio-based spinning oils provided in Examples 1-22 were applied to polyester spinning, and the performance of the bio-based spinning oils was tested.

[0066] The method for preparing polyester spinning includes: melt spinning polyester chips (produced by Hengli Group, FG600) on a BKV446 polyester POY series high-speed spinning machine (Beijing Zhongli Machinery Engineering Technology Co., Ltd.) at a spinning speed of 3200 m / min; diluting the bio-based spinning oil provided in Examples 1-22 with deionized water to form an emulsion with a bio-based spinning oil content of 10%; then applying the emulsion to the spinning fiber through an oil spray nozzle, with an oil application amount of 0.3% of the polyester fiber mass to obtain POY fiber; and then stretching and false-twisting the POY fiber at a temperature of 220°C using a polyurethane friction disc at a processing speed of 800 m / min to prepare 230D / 36F polyester fiber.

[0067] (1) Tar amount on the rubber roller:

[0068] One month after the start of deformation, the state of tar formation on the hot plate was inspected visually and recorded as follows:

[0069] ◎ - Almost none;

[0070] ○ - A small amount of tar forms on the yarn guide;

[0071] △ - Some tar forms on and around the yarn guide;

[0072] The X-section forms noticeable tar on and around the yarn guide.

[0073] (2) Amount of flue gas during the spinning process:

[0074] The measurements were taken visually and recorded as follows:

[0075] ◎ - Almost none;

[0076] ○- There is a slight smoky smell, but no pungent odor;

[0077] △- There is a noticeable and heavy smoke, with a pungent smell.

[0078] (3) Average yarn breakage rate:

[0079] Textured yarn bobbins of 230D / 36F polyester fibers were spun using the bio-based spinning oils provided in Examples 1-22. Ten textured yarn bobbins (4kg / bobbin) were spun using each type of bio-based spinning oil. The yarn breakage rate was calculated by counting the number of yarn breaks (number of yarn breaks) during the spinning process of each textured yarn bobbin. The average breakage rate of the ten textured yarn bobbins was then calculated as the average yarn breakage rate. Breakage rate = (number of yarn breaks ÷ total yarn length) ÷ number of yarns × 100.

[0080] In the aforementioned 230D / 36F polyester fiber, 230D indicates that the mass of a 9000-meter monofilament is 230 grams, and 36F indicates that the spinneret has 36 holes. The mass of each 230D / 36F polyester fiber textured yarn bobbin is 4 kg, and the warp length is: 4000 ÷ 230 × 0.9 = 15.65 × 10⁻⁶. 4 Meters. One deformed yarn bobbin (4kg / bobbin) represents 36 monofilaments with a total length of 156,500 meters.

[0081] The test results are shown in Table 2.

[0082] Table 2

[0083] As shown in Table 2, the bio-based spinning oils provided in Examples 1-22 exhibit very low average yarn breakage rates during polyester spinning, ranging from 0.1% to 0.3%. The bio-based spinning oils provided in Examples 5-10, 18-19, and 22 show an average yarn breakage rate of only 0.1%. Furthermore, the tar content on the rubber rollers is extremely low, almost invisible, and no significant smoke is generated during spinning. Therefore, it is evident that tetrameric castor oil ester can replace white oil or silicone oil in the preparation of spinning oils, exhibiting superior performance without the need for additional thickeners and oil film stabilizers.

[0084] Compared with Examples 16-21, if the mass percentage of tetrameric ricinoleate is lower (Example 16), the average yarn breakage rate increases; if the mass percentage of tetrameric ricinoleate is lower (Example 21), the amount of tar on the rubber roller, the amount of smoke during the spinning process, and the average yarn breakage rate all increase. Therefore, it can be seen that the bio-based spinning oil prepared with a mass percentage of tetrameric ricinoleate of 40% to 70% has better performance, and the bio-based spinning oil prepared with a mass percentage of tetrameric ricinoleate of 50% to 60% has even better performance.

[0085] The applicant declares that this application illustrates a bio-based spinning oil agent, its preparation method, and its application through the above embodiments. However, this application is not limited to the above embodiments, meaning that this application does not necessarily rely on the above embodiments for implementation. Those skilled in the art should understand that any improvements to this application, equivalent substitutions of raw materials for the product, addition of auxiliary components, and selection of specific methods, all fall within the protection and disclosure scope of this application.

Claims

1. A bio-based spinning oil comprising tetrameric castor oil ester, a nonionic surfactant, an antioxidant, and an antistatic agent.

2. The bio-based spinning oil agent according to claim 1, wherein, Based on the total mass of the bio-based spinning oil, the mass percentage of the tetrameric castor oil ester is 3% to 90%.

3. The bio-based spinning oil agent according to claim 1 or 2, wherein, The nonionic surfactant includes any one or a combination of at least two of fatty alcohol polyoxyethylene ethers, fatty acid polyoxyethylene esters, Tween series surfactants, or alkylphenol polyoxyethylene ethers.

4. The bio-based spinning oil agent according to any one of claims 1-3, wherein, Based on the total mass of the bio-based spinning oil agent as 100%, the mass percentage of the nonionic surfactant is 5% to 10%.

5. The bio-based spinning oil agent according to any one of claims 1-4, wherein, The antioxidant includes any one or a combination of at least two of hindered phenolic antioxidants, sulfur-based antioxidants, or phosphite-based antioxidants.

6. The bio-based spinning oil agent according to any one of claims 1-5, wherein, The antioxidant has a mass percentage of 0.1% to 5% based on 100% of the total mass of the bio-based spinning oil.

7. The bio-based spinning oil agent according to any one of claims 1-6, wherein, Based on the total mass of the bio-based spinning oil agent being 100%, the mass percentage of the antistatic agent is 0.1% to 1%. Preferably, the bio-based spinning oil further includes water; Preferably, the water content is 5% to 65% by mass, based on 100% of the total mass of the bio-based spinning oil. Preferably, the bio-based spinning oil further includes a pH adjuster; Preferably, the pH adjuster comprises any one or a combination of at least two of acetic acid, citric acid, sodium hydroxide, monoethanolamine, diethanolamine, or triethanolamine; Preferably, the pH adjuster is 0.2%-3% by mass, based on 100% of the total mass of the bio-based spinning oil.

8. A method for preparing a bio-based spinning oil as described in any one of claims 1-7, comprising the following steps: mixing tetrameric castor oil ester, nonionic surfactant, antioxidant and antistatic agent to obtain the bio-based spinning oil.

9. The preparation method according to claim 8, wherein, The mixing process also includes a step of emulsifying with water.

10. The application of a bio-based spinning oil as described in any one of claims 1-7 in polyester spinning.

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