Pre-spinning oil agent for polyester staple fibers and preparation method of pre-spinning oil agent

Abstract

The invention relates to a pre-spinning oil agent for polyester staple fibers and a preparation method thereof, and the pre-spinning oil agent for polyester staple fibers comprises the following components in parts by weight: 10-20 parts of PEG-50 distearate, 3-7 parts of a nonionic surfactant, 6-10 parts of an antistatic agent MOA3-PK, 9-11 parts of Tween T-80, 3-5 parts of triethanolamine oleic soap, 2-3 parts of ethylene glycol, 0.3-0.7 part of a bactericide and 56-62 parts of water. The pre-spinning oil agent for polyester staple fibers has good smoothness and cohesive force, materials are easy to melt, and putrefacts cannot be generated.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of chemical fiber spinning oil, and particularly relates to a pre-spinning oil for polyester staple fibers and a preparation method thereof. BACKGROUND

[0002] Polyester staple fibers are a kind of hydrophobic high molecular compounds. In the spinning and post-processing production of polyester, the friction between fiber tows and the friction between the tows and mechanical equipment will generate static electricity, which will cause the tows to wind around the rollers, generate loose ends, and the like. Therefore, the oiling of fibers is essential and very important in the spinning process of polyester.

[0003] At present, the oil agent used in the pre-spinning of polyester staple fibers on the market is basically a combination of fatty alcohol phosphate potassium salt (i.e., white oil) and non-ionic surfactant (i.e., yellow oil) in a certain proportion. For example, Chinese patent CN201310219552.7 discloses a polyester staple fiber oil agent, the total mass of the polyester staple fiber oil agent is the benchmark, which is composed of the following components in mass percentage: high carbon isomeric alcohol phosphate potassium salt 18% to 60%; fatty acid polyethylene glycol 12% to 30%; dioctyl phthalate 1% to 15%; polyether 3% to 10%; fatty alcohol polyoxyethylene ether 15% to 35%; the polyester staple fiber oil agent prepared by using high carbon isomeric alcohol phosphate potassium salt as the main antistatic agent and other ester and ether non-ionic surfactants has excellent antistatic property, good smoothness and cohesion, but the material needs to be melted at high temperature during the melting of the material, and corruption is likely to occur after continuous use for a period of time. SUMMARY

[0004] The purpose of the present application is to provide a pre-spinning oil for polyester staple fibers, which not only has good smoothness and cohesion, but also is easy to melt and does not produce corruption.

[0005] The technical solution adopted by the present application to solve the above problems is as follows: a pre-spinning oil for polyester staple fibers, by weight, comprising the following components: PEG-50 distearate 10-20 parts Non-ionic surfactant 3-7 parts Antistatic agent MOA3-PK 6-10 parts Tween T-80 9-11 parts Triethanolamine oleic acid soap 3-5 parts Ethylene glycol 2-3 parts Bactericide 0.3-0.7 parts Water 56-62 parts Preferably, by weight, specifically comprising the following components: PEG-50 distearate 15 parts Non-ionic surfactant 5 parts Antistatic agent MOA3-PK 8 parts Tween T-80 10 parts Triethanolamine oleic acid soap 4 parts Ethylene glycol 2.5 parts Bactericide 0.5 parts Water 59 parts Preferably, the non-ionic surfactant is detergent 6501.

[0006] More preferably, the detergent 6501 is a detergent 6501 (1: 1.5) type, the mass ratio of coconut oil diethanolamide to water is 1:1.5.

[0007] Preferably, the bactericide is kasun.

[0008] Another object of the present application is to provide a preparation method of the above-mentioned oil agent for pre-spinning of polyester staple fiber, comprising the following steps: The PEG-50 distearate, non-ionic surfactant, antistatic agent MOA3-PK, Tween T-80, triethanolamine oleic acid soap and water are proportionally put into a reaction kettle, heated to 70-75℃ and stirred for 30 minutes, then cooled to 30-40℃, and then the ethylene glycol and bactericide are put in and stirred for 10 minutes to obtain the final product.

[0009] Compared with the prior art, the present application has the following advantages: The oil agent for pre-spinning of polyester staple fiber of the present application has no corruption after being used in the pre-spinning of polyester staple fiber, improves the cleanliness of the production environment, only needs normal temperature water when the fiber is melted, and the pre-spun polyester staple fiber has low dispersion and good smoothness and cohesion, thereby reducing the energy consumption of the fiber mill. DETAILED DESCRIPTION

[0010] The present application will be further described in detail below in combination with examples.

[0011] The raw materials are obtained from the following companies: The PEG-50 distearate is purchased from Guangzhou Xumai Chemical Technology Co., Ltd.; The detergent 6501 (1: 1.5) type is purchased from Hubei Chengfeng Chemical Co., Ltd.; The antistatic agent MOA3-PK is purchased from Haian Petrochemical Factory in Jiangsu Province, with the item number: MOA3-PK (40%); The Tween T-80 is purchased from Guoli Chemical Co., Ltd. in Haian County; The triethanolamine oleic acid soap is purchased from Guoli Chemical Co., Ltd. in Haian County; The bactericide kasun is purchased from Jinan Kasun Chemical Co., Ltd. Example 1

[0012] A spinning oil for polyester staple fibers before spinning, by weight, specifically comprising the following components: PEG-50 distearate 15 parts Detergent 6501 (1: 1.5) type 5 parts Antistatic agent MOA3-PK 8 parts Tween T-80 10 parts Triethanolamine oleic acid soap 4 parts Ethylene glycol 2.5 parts Bactericide Kason 0.5 parts Water 59 parts A preparation method of the above-mentioned spinning oil for polyester staple fibers before spinning, comprising the following steps: Put PEG-50 distearate, detergent 6501 (1: 1.5) type, antistatic agent MOA3-PK, Tween T-80, triethanolamine oleic acid soap, and water into the reaction kettle in proportion, heat to 75℃ and stir for 30 minutes, then cool to 40℃, add ethylene glycol and bactericide, stir for 10 minutes, and obtain the final product. Example 2

[0013] A spinning oil for polyester staple fibers before spinning, by weight, comprising the following components: PEG-50 distearate 18 parts Detergent 6501 (1: 1.5) type 6 parts Antistatic agent MOA3-PK 9 parts Tween T-80 11 parts Triethanolamine oleic acid soap 5 parts Ethylene glycol 3 parts Bactericide Kason 0.6 parts Water 61 parts A preparation method of the above-mentioned spinning oil for polyester staple fibers before spinning, comprising the following steps: Put PEG-50 distearate, detergent 6501 (1: 1.5) type, antistatic agent MOA3-PK, Tween T-80, triethanolamine oleic acid soap, and water into the reaction kettle in proportion, heat to 73℃ and stir for 30 minutes, then cool to 35℃, add ethylene glycol and bactericide, stir for 10 minutes, and obtain the final product. Example 3

[0014] A spinning oil for polyester staple fibers before spinning, by weight, comprising the following components: PEG-50 distearate 12 parts Detergent 6501 (1: 1.5) type 4 parts Antistatic agent MOA3-PK 6 parts Tween T-80 9 parts Triethanolamine oleic acid soap 3 parts Ethylene glycol 2 parts Bactericide Karson 0.4 parts Water 57 parts A preparation method of the above-mentioned oil agent for polyester staple fibers before spinning, comprising the following steps: PEG-50 distearate, detergent 6501 (1:1.5) type, antistatic agent MOA3-PK, Tween T-80, triethanolamine oleic acid soap, and water are proportionally put into a reaction kettle, heated to 70°C and stirred for 30 minutes, then cooled to 30°C, and ethylene glycol and bactericide are put in and stirred for 10 minutes to obtain the final product.

[0015] Comparative Example 1 The difference compared with Example 1 is only that no ethylene glycol is added.

[0016] Comparative Example 2 The difference compared with Example 1 is only that no bactericide Karson is added.

[0017] Comparative Example 3 The difference compared with Example 1 is only that no triethanolamine oleic acid soap is added.

[0018] The oil-free polyester staple fibers are respectively immersed in the oil agents for polyester staple fibers before spinning prepared in Examples 1-3 and Comparative Examples 1-3 for 5 minutes, spun dry, and baked in an oven at 100°C for 6 hours to prepare test fiber samples, and smoothness and cohesion tests are performed, as follows: Smoothness test: Y151 fiber friction coefficient tester is used to determine, with a speed of 2 meters / minute and a pretension of 5g.

[0019] Cohesion test: a cohesion tester is used to determine.

[0020] The oil agents for polyester staple fibers before spinning prepared in Examples 1-3 and Comparative Examples 1-3 are respectively placed in containers, and pure water at different temperatures (25°C, 40°C, 55°C, 70°C, 85°C) is added and stirred. The pure water is added from low to high temperature. If the low-temperature pure water (for example, 25°C) does not dissolve, the oil agent is placed in a new container again, and pure water at a higher temperature (40°C) is added until the oil agent is completely dissolved. The temperature of the pure water at this time is recorded as the dissolution temperature. The mass ratio of the oil agent for polyester staple fibers before spinning to pure water is 1:10.

[0021] The performance test results of the oil agents for polyester staple fibers before spinning in Examples 1-3 and Comparative Examples 1-3 are shown in Table 1: Table 1 Performance test results of the oil agents for polyester staple fibers before spinning

[0022] In addition to the above embodiments, the present application also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the claims of the present application.

Claims

1. A pre-spinning oil for polyester staple fibers, characterized in that: In parts by weight, it comprises the following components: PEG-50 distearate 10-20 parts 3-7 parts nonionic surfactant Antistatic agent MOA3-PK 6-10 parts Tween T-80 9-11 parts 3-5 parts triethanolamine oleic acid soap 2-3 parts ethylene glycol 0.3-0.7 parts of fungicide 56-62 parts of water.

2. The pre-spinning oil for polyester staple fibers according to claim 1, wherein: Calculated by weight, it specifically includes the following components: PEG-50 distearate 15 parts 5 parts nonionic surfactant Antistatic agent MOA3-PK 8 parts Tween T-80 10 parts 4 parts of triethanolamine oleic acid soap 2.5 parts of ethylene glycol 0.5 parts of fungicide 59 parts water.

3. The pre-spinning oil for polyester staple fibers according to claim 1 or 2, characterized in that: The nonionic surfactant is detergent 6501.

4. The pre-spinning oil for polyester staple fibers according to claim 3, wherein: The detergent 6501 is a detergent 6501 (1:1.5) type, and the mass ratio of coconut oil diethanolamide to water is 1:1.

5.

5. The pre-spinning oil for polyester staple fibers according to claim 1 or 2, characterized in that: The bactericide is kasone.

6. A method for preparing a pre-spinning oil for polyester staple fibers according to any one of claims 1 to 5, characterized in that: The following steps are involved: PEG-50 distearate, nonionic surfactant, antistatic agent MOA3-PK, Tween T-80, triethanolamine oleic acid soap and water are added into a reactor in proportion, heated to 70-75°C and stirred for 30 minutes, cooled to 30-40°C, and then ethylene glycol and fungicide are added and stirred for 10 minutes to obtain the final product.

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