Multifunctional polyester spinning oil and preparation method thereof

Abstract

The invention discloses multifunctional polyester spinning oil which is prepared from the following components in percentage by mass: 60-70% of a smoothing agent, 10-20% of an emulsifier, 5-15% of a bundling agent, 3-8% of a penetrant, 3-8% of an antistatic agent, 0.1-2% of an antioxidant and 0.5-1% of water. Wherein the smoothing agent is a synthetic ester smoothing agent. The oiling agent disclosed by the invention can meet the production requirements of polyester spinning of various specifications; the oiling agent contains a large amount of smoothing agent, and the smoothing agent at least accounts for 60% of the total amount of the oiling agent, so that friction force among fibers is reduced, and the number of broken ends of tows is small in the production process; the propylene glycol block polyether is added into the oiling agent, so that the heat resistance of the oiling agent is improved, and the oiling agent is kept stable at high temperature.

Description

Technical Field

[0001] The invention belongs to the field of auxiliary agent manufacturing in synthetic fiber processing and relates to a multifunctional polyester industrial yarn oil agent and a preparation method thereof. Background Art

[0002] Polyester is a key component of chemical fibers and holds a dominant position in the chemical fiber industry. Polyester offers advantages such as low price, excellent wrinkle resistance, and excellent abrasion resistance. However, compared to natural fibers, polyester's polyester macromolecules contain fewer hydrophilic groups, with a standard moisture regain of only 0.4%. Therefore, a suitable oil is required during the spinning process. The dosage of oil in chemical fiber production is only 0.15% to 2.5%, but it plays a key role in eliminating static electricity, reducing the coefficient of friction, and improving yarn cohesion. This reduces lint, waste, and breakage, facilitating downstream processing, improving textile efficiency, and ensuring product quality. Therefore, spinning oil is essential in chemical fiber production.

[0003] Spinning oils primarily consist of lubricants, antistatic agents, emulsifiers, stabilizers, and sizing agents. High-quality spinning oils typically exhibit an appropriate coefficient of friction, good conductivity, excellent heat resistance, low surface tension, and low viscosity. Spinning equipment is typically equipped with specialized oiling components, and oiling methods are primarily divided into two types: tanker oiling and nozzle oiling. In addition to the oiling method, actual production also requires selecting appropriate process parameters such as oil type, emulsion concentration, and oiling rate based on the yarn type, process, and application to ensure product quality.

[0004] In recent years, China has relied heavily on imports for its most technically demanding pre-spinning and industrial filament oils. The high prices of these imported oils have severely hampered the development of China's polyester filament industry. With advances in chemical technology and raw material quality, domestic oil manufacturers have gradually developed products that meet these requirements, creating significant potential for branding and scaling domestic oils. The use of domestic oils is crucial for adapting to the development of chemical fiber companies, reducing production costs, and improving product competitiveness. CN117026428A discloses a special, splash-resistant oil for polyester DTY that ensures oil stability and optimal oiling at higher spinning speeds, offers excellent splash-resistant properties, reduces cleaning effort, and conserves oil usage. CN117721555A discloses a polyester FDY oil with the advantages of high film strength, excellent high-temperature and oxidation resistance, low cost, and superior overall performance. However, these oils can only meet the process requirements for polyester yarns of a specific specification and are therefore less versatile. To improve product competitiveness and reduce production costs, it is still necessary to develop oils that can be applied to the process requirements of polyester yarns of different specifications. Summary of the Invention

[0005] The purpose of the present invention is to provide a new environmentally friendly oil agent with stable performance, good spinnability and the ability to meet the requirements of different spinning equipment and processes.

[0006] The technical solution adopted in the present invention is:

[0007] A multifunctional polyester spinning oil is composed of the following components in percentage by mass: 60-70% of a smoothing agent, 10-20% of an emulsifier, 5-15% of a sizing agent, 3-8% of a penetrant, 3-8% of an antistatic agent, 0.1-2% of an antioxidant, and 0.5-1% of water; wherein the smoothing agent is a synthetic ester smoothing agent.

[0008] Preferably, the polyester spinning oil is composed of the following component monomers in the following mass percentages: smoothing agent 65-70%, emulsifier 10-15%, sizing agent 8-12%, penetrant 3-6%, antistatic agent 3-6%, antioxidant 0.1-1%, and water 0.5-1%.

[0009] The smoothing agent is one or a mixture of trimethylolpropane oleate, pentaerythritol oleate and glyceride.

[0010] Preferably, the smoothing agent is a mixture of trimethylolpropane oleate and at least one selected from pentaerythritol oleate and glyceride in a weight ratio of 1:0.5 to 1:1.5.

[0011] Preferably, the smoothing agent is a mixture of trimethylolpropane oleate and at least one selected from pentaerythritol oleate and glyceride in a weight ratio of 1:0.7 to 1:1.4.

[0012] The glyceride is triolein.

[0013] The emulsifier is one or a mixture of propylene glycol block polyether, laurylamine polyoxyethylene ether, polyethylene glycol monolaurate.

[0014] Preferably, the emulsifier is propylene glycol block polyether, or a mixture of propylene glycol block polyether and at least one selected from laurylamine polyoxyethylene ether and polyethylene glycol monolaurate in a weight ratio of 1:2 to 2:1.

[0015] The propylene glycol block polyether can be selected from propylene glycol block polyether L62.

[0016] The laurylamine polyoxyethylene ether can be selected from laurylamine polyoxyethylene ether AC-1205 (ie, emulsifier AC-1205).

[0017] The sizing agent is one or a mixture of polyoxyethylene fatty acid ester, betaine, and alkylphenol polyoxyethylene ether.

[0018] The polyoxyethylene fatty acid ester is polyoxyethylene laurate LAE-9 (ie, emulsifier LAE-9).

[0019] The alkylphenol polyoxyethylene ether is octylphenol polyoxyethylene ether OP-3 (i.e. emulsifier OP-3).

[0020] Preferably, the sizing agent is polyoxyethylene fatty acid ester, or a mixture of polyoxyethylene fatty acid ester and at least one selected from betaine and alkylphenol polyoxyethylene ether in a weight ratio of 1:1.5 to 1:1.67.

[0021] The penetrant is one of Taiko oil and dimethyl silicone oil or a mixture of the two.

[0022] The antistatic agent is one of sodium alkyl sulfonate and sodium cellulose sulfate or a mixture of the two.

[0023] The antioxidant is one of phosphites and distearyl thiodipropionate or a mixture of two thereof.

[0024] Another object of the present invention is to provide a method for preparing the multifunctional polyester spinning oil, comprising:

[0025] Add a smoothing agent, an emulsifier, a sizing agent, a penetrant, and an antistatic agent into the reactor and stir evenly at room temperature; then add an antioxidant and water into the reactor and stir evenly, filter the material, and seal to obtain a multifunctional polyester spinning oil product.

[0026] Compared with existing spinning oils, the present invention has the following positive effects:

[0027] (1) The oil agent of the present invention can be applied to the production requirements of polyester spinning of various specifications, thus expanding the application field;

[0028] (2) The oil of the present invention contains a large amount of smoothing agent, and the smoothing agent accounts for at least 60% of the total amount of the oil, which is beneficial to reducing the friction between the fibers and reducing the number of broken ends of the tow during the production process;

[0029] (3) The addition of propylene glycol block polyether to the oil of the present invention improves the heat resistance of the oil, making it stable at high temperatures. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the appended tables and implementation methods.

[0031] Example 1

[0032] The components and mass percentages of the multifunctional polyester spinning oil are as follows:

[0033] 30% trimethylolpropane oleate (smoothing agent), 35% pentaerythritol oleate (smoothing agent);

[0034] 10% propylene glycol block polyether L62 (emulsifier), 5% polyethylene glycol monolaurate (emulsifier);

[0035] 8% polyoxyethylene laurate LAE-9 (sizing agent);

[0036] 3% Taiko oil (penetrant), 3% dimethicone oil (penetrant);

[0037] 2% sodium secondary alkyl sulfonate SAS-60 (antistatic agent), 3% sodium cellulose sulfate (antistatic agent);

[0038] 0.5% Antioxidant 168 (antioxidant);

[0039] 0.5% water.

[0040] The preparation method of the multifunctional polyester spinning oil of this embodiment includes: weighing each component, adding a smoothing agent, an emulsifier, a sizing agent, a penetrant, and an antistatic agent into a reactor, stirring at room temperature for 30 minutes until uniform, then adding an antioxidant and water into the reactor, stirring for 30 minutes until uniform, filtering, discharging, and sealing to obtain a finished multifunctional polyester spinning oil.

[0041] Example 2

[0042] The components and mass percentages of the multifunctional polyester spinning oil are as follows:

[0043] 40% trimethylolpropane oleate (smoothing agent), 28% glyceryl trioleate (smoothing agent);

[0044] 12% propylene glycol block polyether L62 (emulsifier);

[0045] 4% polyoxyethylene laurate LAE-9 (bundling agent), 6% betaine (bundling agent);

[0046] 4% Taikoo oil (penetrant);

[0047] 4% sodium secondary alkyl sulfonate SAS-60 (antistatic agent);

[0048] 0.5% antioxidant 168 (antioxidant), 0.5% distearyl thiodipropionate (antioxidant);

[0049] 1% water.

[0050] The preparation method of the multifunctional polyester spinning oil in this embodiment is the same as that in Example 1.

[0051] Example 3

[0052] The components and mass percentages of the multifunctional polyester spinning oil are as follows:

[0053] 30% trimethylolpropane oleate (smoothing agent), 20% pentaerythritol oleate (smoothing agent), 20% glyceryl trioleate (smoothing agent);

[0054] 5% propylene glycol block polyether L62 (emulsifier), 5% laurylamine polyoxyethylene ether AC-1205 (emulsifier), 5% polyethylene glycol monolaurate (emulsifier);

[0055] 2% betaine (bundling agent), 3% octylphenol polyoxyethylene ether OP-3 (bundling agent), 3% lauric acid polyoxyethylene ester LAE-9 (bundling agent);

[0056] 1% Taikoo oil (penetrant), 2% dimethicone (penetrant);

[0057] 1% sodium secondary alkyl sulfonate SAS-60 (antistatic agent), 2% sodium cellulose sulfate (antistatic agent);

[0058] 0.2% antioxidant 168, 0.2% distearyl thiodipropionate;

[0059] 0.6% water.

[0060] The preparation method of the multifunctional polyester spinning oil in this embodiment is the same as that in Example 1.

[0061] Comparative Example 1

[0062] The components and mass percentages of polyester spinning oil are as follows:

[0063] 30% trimethylolpropane oleate (smoothing agent), 20% pentaerythritol oleate (smoothing agent);

[0064] 10% laurylamine polyoxyethylene ether AC-1205 (emulsifier), 10% polyethylene glycol monolaurate (emulsifier);

[0065] 15% polyoxyethylene laurate LAE-9 (sizing agent);

[0066] 5% Taikoo oil (penetrant), 3% dimethicone oil (penetrant);

[0067] 2% sodium secondary alkyl sulfonate SAS-60 (antistatic agent), 4% sodium cellulose sulfate (antistatic agent);

[0068] 0.5% antioxidant 168;

[0069] 0.5% water.

[0070] The preparation method of the polyester spinning oil in this comparative example is the same as that in Example 1.

[0071] Comparative Example 2

[0072] The components and mass percentages of polyester spinning oil are as follows:

[0073] 30% trimethylolpropane oleate (smoothing agent), 25% glyceryl trioleate (smoothing agent);

[0074] 18% laurylamine polyoxyethylene ether AC-1205 (emulsifier);

[0075] 10% polyoxyethylene laurate LAE-9 (bundling agent), 6% betaine (bundling agent);

[0076] 6% Taikoo oil (penetrant);

[0077] 4% sodium secondary alkyl sulfonate SAS-60 (antistatic agent);

[0078] 0.2% antioxidant 168, 0.2% distearyl thiodipropionate;

[0079] 0.6% water.

[0080] The preparation method of the polyester spinning oil in this comparative example is the same as that in Example 1.

[0081] The polyester spinning oils prepared in Examples 1 to 4 of the present invention have the characteristics of high stability, no stratification, and no precipitation. The comparison of the spinning performance of the polyester spinning oils with imported oils and domestic oils is shown in Tables 1, 2, 3, and 4.

[0082] Table 1. Comparison of spinning conditions of FDY polyester yarn produced using different oils

[0083]

[0084] Note: The foreign oil agent is ST-8 from Schilensellech, Germany, and the domestic oil agent is JC-620 from Anji Zhukai New Material Technology Co., Ltd.

[0085] Table 2. Comparison of spinning conditions of DTY polyester yarn produced using different oils

[0086]

[0087] Note: The foreign oil agent is F-3658 from Takemoto Co., Ltd. of Japan, and the domestic oil agent is TK-3182A.B from Yixing Jiateng Chemical Co., Ltd.

[0088] Table 3. Comparison of spinning conditions of POY polyester yarn produced using different oils

[0089]

[0090] Note: The foreign oil agent is F-2169 from Takemoto Co., Ltd. of Japan, and the domestic oil agent is TK-3518 from Yixing Jiateng Chemical Co., Ltd.

[0091] Table 4. Comparison of spinning conditions of polyester industrial filament produced using different oils

[0092]

[0093] Note: In Table 4, the foreign oil is GXM-100 from Matsumoto Oil & Fats Co., Ltd. of Japan, and the domestic oil is SLT-2237 from Hangzhou Surat Oil Co., Ltd.

[0094] It can be seen from Tables 1, 2, 3 and 4 that after actual machine trials, the oils formulated in Examples 1, 2 and 3 are fully capable of meeting the spinning requirements of various polyester yarns such as FDY, DTY, POY and polyester industrial filament. The oils of the present invention are superior to domestic oils in terms of smoke temperature, yarn breakage and white powder loss, and are not much different from imported oils.

[0095] The above description is only a preferred embodiment of the present invention and does not impose any form of limitation on the technical solution of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of protection of the present invention.

Claims

1. A multifunctional polyester spinning oil, characterized by: The invention is composed of the following components in percentage by mass: 60-70% of a smoothing agent, 10-20% of an emulsifier, 5-15% of a sizing agent, 3-8% of a penetrant, 3-8% of an antistatic agent, 0.1-2% of an antioxidant and 0.5-1% of water; wherein the smoothing agent is a synthetic ester smoothing agent.

2. The multifunctional polyester spinning oil according to claim 1, characterized in that: The invention is composed of the following monomer components in the following mass percentages: 65-70% of a smoothing agent, 10-15% of an emulsifier, 8-12% of a bundling agent, 3-6% of a penetrant, 3-6% of an antistatic agent, 0.1-1% of an antioxidant and 0.5-1% of water.

3. The multifunctional polyester spinning oil according to claim 1, characterized in that: The smoothing agent is one or a mixture of trimethylolpropane oleate, pentaerythritol oleate and glyceride.

4. The multifunctional polyester spinning oil according to claim 1 or 3, characterized in that: The smoothing agent is a mixture of trimethylolpropane oleate and at least one selected from pentaerythritol oleate and glyceride in a weight ratio of 1:0.5 to 1:1.5, preferably a mixture of trimethylolpropane oleate and at least one selected from pentaerythritol oleate and glyceride in a weight ratio of 1:0.7 to 1:1.

4.

5. The multifunctional polyester spinning oil according to claim 1, characterized in that: The emulsifier is one or a mixture of propylene glycol block polyether, laurylamine polyoxyethylene ether, polyethylene glycol monolaurate.

6. The multifunctional polyester spinning oil according to claim 1 or 5, characterized in that: The emulsifier is propylene glycol block polyether, or a mixture of propylene glycol block polyether and at least one selected from laurylamine polyoxyethylene ether and polyethylene glycol monolaurate in a weight ratio of 1:2 to 2:

1.

7. The multifunctional polyester spinning oil according to claim 1, characterized in that: The sizing agent is one or a mixture of polyoxyethylene fatty acid ester, betaine, and alkylphenol polyoxyethylene ether.

8. The multifunctional polyester spinning oil according to claim 1 or 7, characterized in that: The sizing agent is polyoxyethylene fatty acid ester, or a mixture of polyoxyethylene fatty acid ester and at least one selected from betaine and alkylphenol polyoxyethylene ether in a weight ratio of 1:1.5 to 1:1.

67.

9. The multifunctional polyester spinning oil according to claim 1, characterized in that: The penetrant is one or a mixture of Taiko oil and dimethyl silicone oil; the antistatic agent is one or a mixture of sodium alkyl sulfonate and sodium cellulose sulfate; the antioxidant is one or a mixture of phosphites and distearyl thiodipropionate.

10. A method for preparing the multifunctional polyester spinning oil according to claim 1, characterized in that: include: Add a smoothing agent, an emulsifier, a sizing agent, a penetrant, and an antistatic agent into the reactor and stir evenly at room temperature; then add an antioxidant and water into the reactor and stir evenly, filter the material, and seal to obtain a multifunctional polyester spinning oil product.

Images