CN-121976331-A - Polyester high-speed spinning sizing agent with low interfacial tension and preparation method thereof

Abstract

The invention belongs to the technical field of impregnating compound preparation, and particularly relates to a polyester high-speed spinning impregnating compound with low interfacial tension and a preparation method thereof. The sizing agent is prepared by mixing raw materials comprising hydroxyl-terminated polydimethylsiloxane, modified polyether, a catalyst and an antioxidant, preparing POSS/PEGDA compound by adopting raw materials comprising octahydroxybutyl-POSS, octyl glycidyl ether, polyethylene glycol diacrylate and a photoinitiator, and further preparing the sizing agent by mixing raw materials comprising POSS/PEGDA compound, polyether modified silicone, an antistatic agent, a composite emulsifier and deionized water, has lower surface tension, has good stability and high temperature resistance, and can adapt to the high-temperature and continuous operation working condition of high-speed spinning.

Inventors

• SHEN YAFEN
• CHEN XIAOQIN
• ZHU TONGYU
• GONG RUIPING
• LI WENDA
• CAI MINNAN
• Qian Jiadai

Assignees

• 桐乡市恒隆化工有限公司

Dates

Publication Date

20260505

Application Date

20260228

Claims (9)

1. 1. The preparation method of the polyester high-speed spinning sizing agent with low interfacial tension is characterized by comprising the following steps: s100, preparing polyether modified organic silicon by adopting raw materials comprising hydroxyl-terminated polydimethylsiloxane, modified polyether, a catalyst and an antioxidant; S200, preparing a POSS/PEGDA compound by adopting raw materials of octahydroxybutyl-POSS, octyl glycidyl ether, polyethylene glycol diacrylate and a photoinitiator; s300, mixing the POSS/PEGDA compound and polyether modified organosilicon, adding an antistatic agent and a compound emulsifier, shearing and emulsifying, adding deionized water, and uniformly mixing to obtain the sizing agent.
2. 2. The preparation method of the polyester high-speed spinning impregnating compound with low interfacial tension as claimed in claim 1, wherein step S100 is characterized in that hydroxyl-terminated polydimethylsiloxane, modified polyether and catalyst are added into a reactor under inert atmosphere, the temperature is increased to 105-115 ℃, the reaction is carried out for 4-6 hours at constant temperature, an antioxidant is added, the constant temperature stirring is continued for 1-2 hours, the temperature is reduced to 55-65 ℃, and the polyether modified organosilicon is obtained by spin evaporation after the filtration of absolute ethyl alcohol is added.
3. 3. The preparation method of the low-interfacial tension polyester high-speed spinning impregnating compound as claimed in claim 2, wherein the catalyst is one or more of stannous octoate, dibutyl tin dilaurate, zinc iso-octoate, tetrabutyl titanate and monobutyl tin oxide, and the antioxidant is one or more of antioxidant 1010, antioxidant 1076, antioxidant 168, antioxidant 264, antioxidant 3114 and antioxidant BHT.
4. 4. The method for preparing the low interfacial tension polyester high-speed spinning sizing agent according to claim 2, wherein the modified polyether is methallyl alcohol polyoxyethylene ether.
5. 5. The method for preparing the low interfacial tension polyester high-speed spinning sizing agent according to claim 1, wherein the step S200 is specifically: S210, adding octahydroxybutyl-POSS and octyl glycidyl ether into a reactor, uniformly mixing, adding polyethylene glycol diacrylate, continuously stirring for 10-20min, adding an ethanol aqueous solution, shearing for 20-30min at a high speed, adding a photoinitiator, and continuously stirring for 6-10min to obtain a pre-dispersion; S220, transferring the pre-dispersion liquid into a mould, placing the mould in an ultraviolet curing box, irradiating for 15-20min at room temperature, and washing, drying, crushing and sieving the photo-cured cross-linked product to obtain the POSS/PEGDA compound.
6. 6. The preparation method of the low-interfacial tension polyester high-speed spinning sizing agent according to claim 1, wherein the step S300 is characterized in that a POSS/PEGDA compound and polyether modified organosilicon are added into a reactor, the temperature is increased to 55-65 ℃, the mixture is stirred for 20-40min, the temperature is reduced to 35-45 ℃, an antistatic agent and a compound emulsifier are added, deionized water is added after high-speed shearing emulsification for 40-50min, and the sizing agent is obtained after uniform mixing.
7. 7. The method for preparing the low interfacial tension polyester high-speed spinning sizing agent according to claim 6, wherein the antistatic agent is one or more of cetyltrimethylammonium chloride, octadecyltrimethylammonium chloride, dodecyltrimethylammonium chloride, cetyldimethylbenzyl ammonium chloride and dioctadecyl dimethyl ammonium chloride.
8. 8. The preparation method of the low-interfacial tension polyester high-speed spinning sizing agent according to claim 6, wherein the composite emulsifier is prepared by compounding laurinol polyoxyethylene ether and polyethylene glycol monostearate according to a mass ratio of 1-3:1.
9. 9. A low interfacial tension polyester high-speed spinning sizing agent, which is characterized by being prepared by adopting the preparation method of the low interfacial tension polyester high-speed spinning sizing agent as claimed in any one of claims 1-8.

Description

Polyester high-speed spinning sizing agent with low interfacial tension and preparation method thereof Technical Field The invention belongs to the technical field of impregnating compound preparation, and particularly relates to a polyester high-speed spinning impregnating compound with low interfacial tension and a preparation method thereof. Background Polyester is used as a synthetic fiber variety with the greatest global productivity and is widely applied to various fields of textile clothing, industrial filter materials, medical health and the like. With the transition of textile industry to high efficiency and high end, the polyester high-speed spinning process has become a mainstream production mode. In the high-speed spinning process of polyester, after the polyester melt in a molten state is extruded by a spinneret plate, the polyester melt is required to undergo the procedures of rapid cooling, drawing, winding and the like, in the process, a large amount of static electricity is generated on the surface of the fiber due to friction, and the fiber is in intense friction with metal parts such as a godet, a hot plate and the like, meanwhile, the phenomenon of divergence easily occurs among monofilaments, and the technological defects such as broken filaments, broken ends, winding and edge collapse and the like are directly caused, so that the efficiency and the product yield are seriously affected. Therefore, the sizing agent becomes an indispensable auxiliary agent in high-speed spinning of polyester, and can ensure the continuity of the spinning process and the high quality of fiber products. The Chinese patent publication No. CN117127406B discloses a polyester FDY spinning oil which is prepared from raw materials including coconut polyoxyethylene ether, fatty alcohol polyoxyethylene ether, EL polyoxyethylene ether, a smoothing agent, an antistatic agent and water, and the spinning oil prepared by the synergistic effect of the raw materials is not easy to break and separate out under the high-temperature condition, and can be rapidly spread when contacting the surface of a fiber, so that a good protection effect is achieved on polyester tows. The Chinese patent publication No. CN119777035B discloses a preparation method and application of a polyester FDY spinning oil, which is prepared from raw materials of a smoothing agent, an emulsifying agent, an antistatic agent, a wetting penetrating agent, an antioxidant and water, and has good high temperature resistance, oxidation resistance, high storage stability and excellent wetting spreadability. However, the existing impregnating compound is difficult to form balance between low interfacial tension and stable film forming property in the use process, and often has insufficient mechanical strength of an oil film due to reduced surface tension caused by wettability, and is easy to crack at a high-speed shearing rate to cause lubrication failure. Therefore, development of a low interfacial tension sizing agent capable of adapting to high-speed spinning process and meeting processing requirements is needed. Disclosure of Invention In order to solve at least one of the above problems, the present invention provides the following technical solutions: a preparation method of a polyester high-speed spinning impregnating compound with low interfacial tension comprises the following steps: s100, preparing polyether modified organic silicon by adopting raw materials comprising hydroxyl-terminated polydimethylsiloxane, modified polyether, a catalyst and an antioxidant; S200, preparing a POSS/PEGDA compound by adopting raw materials of octahydroxybutyl-POSS, octyl glycidyl ether, polyethylene glycol diacrylate and a photoinitiator; s300, mixing the POSS/PEGDA compound and polyether modified organosilicon, adding an antistatic agent and a compound emulsifier, shearing and emulsifying, adding deionized water, and uniformly mixing to obtain the sizing agent. Further, step S100 is specifically that hydroxyl-terminated polydimethylsiloxane, modified polyether and a catalyst are added into a reactor under inert atmosphere, the temperature is increased to 105-115 ℃, the constant temperature is carried out for 4-6 hours, an antioxidant is added, the constant temperature is continuously carried out for 1-2 hours, the temperature is reduced to 55-65 ℃, absolute ethyl alcohol is added, and the polyether modified organosilicon is obtained after filtration and rotary evaporation. Further, the catalyst is one or more of stannous octoate, dibutyl tin dilaurate, zinc iso-octoate, tetrabutyl titanate and monobutyl tin oxide, and the antioxidant is one or more of antioxidant 1010, antioxidant 1076, antioxidant 168, antioxidant 264, antioxidant 3114 and antioxidant BHT. Further, the modified polyether is methallyl alcohol polyoxyethylene ether. Further, the step S200 specifically includes: S210, adding octahydroxybutyl-POSS and octyl glycidyl ether into a reactor, uniformly mixin