Preparation method of fluorine-free acrylic ester anti-wicking polyester industrial yarn

Abstract

This application provides a method for preparing fluorine-free anti-wicking polyester industrial yarn based on acrylate, belonging to the field of polyester fiber technology. A dispersant, photoinitiator, and reactive diluent are added to an acrylate prepolymer and thoroughly mixed to obtain a fluorine-free oiling agent component. This component is then added to a spinning oiling agent to obtain a fluorine-free anti-wicking oiling agent. The addition ratio of the fluorine-free oiling agent component in the spinning oiling agent is 15-20%. Polyester chips are melt-extruded, cooled, bundled, and after one oiling, stretched. A second oiling is applied using the aforementioned fluorine-free anti-wicking oiling agent on a heat-setting roller. Strong ultraviolet light is applied for online curing, and the yarn is wound to obtain the finished fluorine-free anti-wicking polyester industrial yarn with a strength of 7.2-8.0 cN / dtex and a wicking height of 3-9 cm.

Description

Technical Field

[0001] This application relates to a method for preparing fluorine-free, wicking-resistant polyester industrial yarn based on acrylate, belonging to the field of polyester fiber technology. Background Technology

[0002] When conventional polyester industrial filaments (without anti-wicking treatment) are processed into a skeleton fabric and then made into a polyvinyl chloride (PVC) coated fabric, during use, because the edges of the skeleton fabric are exposed, the "wicking effect" causes the skeleton layer to absorb moisture and gradually become damp under the influence of rain and humidity, eventually soaking through the entire skeleton fabric surface, ultimately leading to fabric staining, affecting aesthetics and service life. Especially when PVC coated fabrics are used for outdoor lightbox advertising, artificial swimming pools, and water storage containers, the skeleton layer must be made of polyester industrial filaments with anti-wicking treatment.

[0003] Traditional waterproofing agents are commonly used in umbrellas, tents, outdoor sportswear, and dyeing to prevent color penetration. Currently, fluorinated waterproofing agents, such as perfluorooctane sulfonyl compounds (PFOS) and perfluorooctanoic acid (PFOA), are widely used in the waterproofing finishing agent market. CN97195702.9A invented a water-dispersible fluorinated waterproofing and oil-repellent agent with excellent waterproofing, oil-repellent, and abrasion resistance properties. However, the C8 fluorinated waterproofing agent it uses is difficult to degrade and has high bioaccumulation. Currently, domestic and international oil-based companies are choosing C6 and C4 perfluorinated compounds as substitutes for C8 to circumvent relevant regulatory restrictions. For example, Daikin Fluorochemicals is actively developing and promoting C6-related fluorinated products as alternatives and has launched C6 (perfluorohexyl sulfonate, PFHS) products. Shandong Zhongkang New Materials Co., Ltd. specializes in producing various textile auxiliaries, including C6 waterproofing agents, providing the market with alternative solutions to C8. Although the cumulative biotoxicity of C6 and C4 compounds to the human body is weaker than that of C8, they still belong to the perfluorinated class of substances, and their long-term development prospects are not optimistic.

[0004] Therefore, developing more functional and higher-performance fluorine-free waterproofing agents, especially novel polymers with lower surface tension, is currently a key focus in the development of waterproofing agents. Specific methods include polyester and silicone modification, polyurethane and acrylic modification, acrylic and silicone modification, and nano-SiO2 modification. For example, CN118515907A describes a silica / polyacrylate microsphere-modified fluorine-free waterproofing agent with excellent waterproofing and wash resistance, but its application is limited to fabric finishing and has not been used in the preparation of anti-wicking polyester industrial yarns. Summary of the Invention

[0005] In view of this, this application provides a method for preparing fluorine-free, wicking-resistant polyester industrial yarn based on acrylate, which has advantages such as being fluorine-free, having flexible oiling properties, rapid curing, and being environmentally friendly.

[0006] Specifically, this application is implemented through the following scheme:

[0007] A method for preparing fluorine-free, wicking-resistant polyester industrial yarn based on acrylate, comprising the following steps:

[0008] Step 1: Add dispersant, photoinitiator, and reactive diluent to the acrylate prepolymer, mix thoroughly to obtain a fluorine-free oiling agent component. Add the fluorine-free oiling agent component to the spinning oiling agent to obtain a fluorine-free anti-wicking oil absorbent. The addition ratio of the fluorine-free oiling agent component to the spinning oiling agent is 15-20%.

[0009] Step 2: Polyester chips are melt-extruded, cooled, bundled, and after one oiling, they are stretched and then applied a second oiling on heat-setting rollers. The oiling agent for the second oiling is the fluorine-free anti-core oil-absorbing agent from Step 1.

[0010] Step 3: Apply strong ultraviolet light for online curing, then wind to obtain the finished fluorine-free antiwicking polyester industrial yarn, with a strength of 7.2-8.0 cN / dtex and a wicking height of 3-9 cm.

[0011] The above preparation method selects fluorine-free acrylate materials as the main material of the anti-wicking oil-absorbing agent. By preparing a reactive acrylate oiling agent, fluorine-free anti-wicking polyester industrial yarn is prepared by applying the oil separately to the polyester industrial yarn spinning yarn. It has the advantages of simple operation, flexible oiling, and good hydrophobicity, and solves the problem that the current use of fluorine-containing oiling agents is extremely harmful to human health and the environment.

[0012] Furthermore, as a preferred option:

[0013] The mass percentage of each component in the fluorine-free oil agent is as follows:

[0014] Acrylic prepolymer: 50-70

[0015] Dispersant: 2-7,

[0016] Photoinitiator: 2-7,

[0017] Reactive diluent: 20-50.

[0018] The acrylate prepolymer is any one of epoxy acrylate prepolymer, polyurethane acrylate prepolymer, polyester acrylate prepolymer, silicone-modified acrylate prepolymer, and polyether acrylate prepolymer. More preferably, the acrylate prepolymer is any one of DH-3066, photomer6363, photomer5806, SJ-804, and TPULP9215.

[0019] The photoinitiator is 2,4,6-trimethylbenzoyl-diphenylphosphine oxide (TPO) or 2-hydroxy-2-methyl-1-phenyl-1-propanone.

[0020] The reactive diluents are trimethylolpropane triacrylate (TMPTA) and tripropylene glycol diacrylate (TPGDA).

[0021] The dispersant is any one of ethoxylated alcohol, ethoxylated carboxylic acid, and polyethylene wax.

[0022] In step two,

[0023] The polyester chips are high-viscosity chips with an intrinsic viscosity of 0.8 to 1.2 dL / g and a melt extrusion temperature of 290 to 305 ℃.

[0024] The first oiling step uses conventional spinning oil, and the oiling method is oiling with an oiling wheel or oiling nozzle. The oiling speed is 1-5 mL / min, the oiling agent temperature is controlled at 20-30 ℃, and the oiling rate is 0.30-0.40%.

[0025] After oiling, the yarn is drawn using five pairs of rollers. The first pair of rollers is the preheating roller, with a drawing temperature of 70-80 ℃ and a heating time of 5-10 s. The second pair of hot rollers is the pre-stretching roller, with a stretch ratio of 1.2-1.4 times and a temperature of 90-100 ℃. The third pair of rollers is the main stretching roller, with a stretch ratio of 3.7-4.2 times and a temperature of 100-150 ℃ and a heating time of 5-15 s. The fourth pair of rollers is the secondary stretching roller, with a stretch ratio of 1.3-1.5 times and a heating temperature of 150-180 ℃. The fifth pair of rollers is the heat setting roller, with a heating temperature of 180-200 ℃ and a heating time of 5-7 s.

[0026] After the oiling point is selected and the shaping section is determined, the oiling method is to use an oiler or an oil nozzle. The oiling speed is 1 to 5 mL / min, the oil temperature is controlled at 20 to 40 ℃, and the oiling rate is 0.35 to 0.45%.

[0027] In step three, the wavelength of the strong ultraviolet light is 360–365 nm, and the intensity is 50–100 mW / cm². 2 Irradiation time: 50-60 seconds.

[0028] Compared with existing antiwicking fiber preparation technologies, the beneficial effects of this application are summarized as follows:

[0029] (1) Compared with the waterproofing agents containing perfluorooctyl sulfonyl derivatives (PFOS) and perfluorooctanoic acid (PFOA) commonly used in the polyester field, the method proposed in this invention does not require the use of fluorine-containing substances that are extremely harmful to human health and the environment, thus having outstanding health and environmental advantages.

[0030] (2) Currently, there is a lack of similar products of fluorine-free antiwicking oil absorbent on the market, and the antiwicking performance of the waterproofing agent on the fiber surface of the fabric is not good. The wicking height of the fluorine-free antiwicking fiber prepared by this invention is 3~9 mm, which is comparable to the hydrophobic effect of fluorine-containing antiwicking oil absorbent.

[0031] (3) Compared with the method of obtaining anti-wicking effect through fiber post-treatment, the method of the present invention has the characteristics of one-step fiber spinning modification, fast curing speed, flexible oiling point, and can be easily realized using existing spinning equipment. The technical transformation cost is low and it is suitable for continuous large-scale production. Detailed Implementation

[0032] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the technical solutions of this application will be further described in detail below with reference to specific examples in the embodiments of this application. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit the technical solutions of this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Example 1

[0034] Add 2 parts by mass of ethoxylated alcohol, 2 parts by mass of TPO and 50 parts by mass of trimethylolpropane triacrylate (TMPTA) to 50 parts by mass of epoxy acrylate prepolymer (DH-3066). After thorough mixing, a fluorine-free oiling agent component is obtained. The obtained fluorine-free oiling agent component is added to FDY spinning oiling agent TF-710 at an addition ratio of 15% to obtain a fluorine-free anti-core oil absorption agent.

[0035] Polyester spinning adopts the melt spinning method. The melt passes through the spinneret and then passes through the slow cooling side blowing and bundling. After one oiling, it goes through multiple stretching and a second oiling on the heat setting roller. It is then rapidly cured online with strong ultraviolet light and then wound to prepare fluorine-free acrylate antiwicking polyester industrial yarn.

[0036] The polyester used is a high-viscosity chip with an intrinsic viscosity of 0.8 dL / g and a melt spinning temperature of 305 ℃.

[0037] The first oiling agent is FDY spinning oil TF-710 (Zhejiang Chuanhua Co., Ltd.). The oiling method is oiling with an oiler, the oiling speed is 1 mL / min, the oiling agent temperature is controlled at 20℃, and the oiling rate is 0.30%.

[0038] The oiled yarn is drawn using five pairs of rollers. The first pair of rollers is the preheating roller, with a drawing temperature of 70 ℃ and a heating time of 5 s. The second pair of hot rollers is the pre-stretching roller, with a stretching ratio of 1.2 times and a temperature of 90 ℃. The third pair of rollers is the main stretching roller, with a stretching ratio of 3.7 times and a temperature of 100 ℃ and a heating time of 5 s. The fourth pair of rollers is the secondary stretching roller, with a stretching ratio of 1.3 times and a heating temperature of 150 ℃. The fifth pair of rollers is the heat setting roller, with a heating temperature of 180 ℃ and a heating time of 5 s.

[0039] The second-stage oiling agent is a fluorine-free anti-wicking oil absorbent prepared by the above method. The oiling agent is applied by an oiler at a speed of 1 mL / min, the oiling agent temperature is controlled at 20 ℃, and the oiling rate is 0.35%.

[0040] Curing is performed at a wavelength of 360 nm and an intensity of 50 mW / cm. 2 Expose to ultraviolet light for 50 seconds.

[0041] The resulting antiwicking polyester industrial yarn has a strength of 7.2 cN / dtex and a wicking height of 3 cm.

[0042] Example 2

[0043] Add 3 parts by mass of ethoxylated alcohol, 4 parts by mass of TPO and 20 parts by mass of trimethylolpropane triacrylate (TMPTA) to 60 parts by mass of polyurethane acrylate prepolymer (photomer6363). After thorough mixing, a fluorine-free oiling agent component is obtained. The obtained fluorine-free oiling agent component is added to FDY spinning oiling agent TF-710 at an addition ratio of 17% to obtain a fluorine-free anti-core oil absorption agent.

[0044] Polyester spinning adopts the melt spinning method. The melt passes through the spinneret and then passes through the slow cooling side blowing and bundling. After one oiling, it goes through multiple stretching and a second oiling on the heat setting roller. It is then rapidly cured online with strong ultraviolet light and then wound to prepare fluorine-free acrylate antiwicking polyester industrial yarn.

[0045] The polyester used is a high-viscosity chip with an intrinsic viscosity of 0.9 dL / g and a melt spinning temperature of 290 ℃.

[0046] The first oiling agent is FDY spinning oil TF-710, which is applied by an oiling wheel at a speed of 2 mL / min. The oiling agent temperature is controlled at 24℃, and the oiling rate is 0.32%.

[0047] The oiled yarn is drawn using five pairs of rollers. The first pair of rollers is the preheating roller, with a drawing temperature of 70 ℃ and a heating time of 6 s. The second pair of hot rollers is the pre-stretching roller, with a stretch ratio of 1.2 times and a temperature of 90 ℃. The third pair of rollers is the main stretching roller, with a stretch ratio of 3.8 times and a temperature of 110 ℃ and a heating time of 7 s. The fourth pair of rollers is the secondary stretching roller, with a stretch ratio of 1.4 times and a heating temperature of 150 ℃. The fifth pair of rollers is the heat setting roller, with a heating temperature of 190 ℃ and a heating time of 6 s.

[0048] The second-stage oiling agent is a fluorine-free anti-core oil absorbent prepared by the above method. The oiling agent is applied by an oiler at a speed of 2 mL / min, the oiling agent temperature is controlled at 30 ℃, and the oiling rate is 0.38%.

[0049] Curing was performed at a wavelength of 361 nm and an intensity of 60 mW / cm. 2 Exposure to ultraviolet light for 52 seconds.

[0050] The resulting antiwicking polyester industrial yarn has a strength of 7.3 cN / dtex and a wicking height of 4 cm.

[0051] Example 3

[0052] Add 4 parts by mass of ethoxylated carboxylic acid, 5 parts by mass of TPO and 30 parts by mass of tripropylene glycol diacrylate (TPGDA) to 70 parts by mass of polyester acrylate prepolymer (photomer5806). After thorough mixing, a fluorine-free oiling agent component is obtained. The obtained fluorine-free oiling agent component is added to FDY spinning oiling agent TF-710 at an addition ratio of 18% to obtain a fluorine-free anti-core oil absorption agent.

[0053] Polyester spinning adopts the melt spinning method. The melt passes through the spinneret and then passes through the slow cooling side blowing and bundling. After one oiling, it goes through multiple stretching and a second oiling on the heat setting roller. It is then rapidly cured online with strong ultraviolet light and then wound to prepare fluorine-free acrylate antiwicking polyester industrial yarn.

[0054] The polyester used is a high-viscosity chip with an intrinsic viscosity of 1.0 dL / g, and the melt spinning temperature is 305 ℃.

[0055] The first oiling agent is FDY spinning oil TF-710, which is applied by an oiler at a speed of 3 mL / min. The oil temperature is controlled at 26℃, and the oiling rate is 0.36%.

[0056] The oiled yarn is drawn using five pairs of rollers. The first pair of rollers is the preheating roller, with a drawing temperature of 70 ℃ and a heating time of 5 s. The second pair of hot rollers is the pre-stretching roller, with a stretch ratio of 1.2 times and a temperature of 90 ℃. The third pair of rollers is the main stretching roller, with a stretch ratio of 4.1 times and a temperature of 130 ℃ and a heating time of 10 s. The fourth pair of rollers is the secondary stretching roller, with a stretch ratio of 1.3 times and a heating temperature of 170 ℃. The fifth pair of rollers is the heat setting roller, with a heating temperature of 180 ℃ and a heating time of 5 s.

[0057] The second-stage oiling agent is a fluorine-free anti-core oil absorbent prepared by the above method. The oiling agent is applied by an oiler at a speed of 3 mL / min, the oiling agent temperature is controlled at 40 ℃, and the oiling rate is 0.41%.

[0058] Curing was performed at a wavelength of 362 nm and an intensity of 70 mW / cm. 2 Exposure to ultraviolet light for 54 seconds.

[0059] The resulting antiwicking polyester industrial yarn has a strength of 7.4 cN / dtex and a wicking height of 6 cm.

[0060] Example 4

[0061] Add 5 parts by mass of ethoxylated carboxylic acid, 6 parts by mass of 2-hydroxy-2-methyl-1-phenyl-1-propanone, and 50 parts by mass of tripropylene glycol diacrylate (TPGDA) to 60 parts by mass of silicone-modified acrylate prepolymer (SJ-804). After thorough mixing, a fluorine-free oiling agent component is obtained. The obtained fluorine-free oiling agent component is added to FDY spinning oiling agent TF-710 at an addition ratio of 19% to obtain a fluorine-free anti-core oil absorption agent.

[0062] Polyester spinning adopts the melt spinning method. The melt passes through the spinneret and then passes through the slow cooling side blowing and bundling. After one oiling, it goes through multiple stretching and a second oiling on the heat setting roller. It is then rapidly cured online with strong ultraviolet light and then wound to prepare fluorine-free acrylate antiwicking polyester industrial yarn.

[0063] The polyester used is a high-viscosity chip with an intrinsic viscosity of 1.1 dL / g and a melt spinning temperature of 290 ℃.

[0064] The first oiling agent is FDY spinning oil TF-710, which is applied using an oiler at a speed of 4 mL / min. The oil temperature is controlled at 28℃, and the oiling rate is 0.38%.

[0065] The oiled yarn is drawn using five pairs of rollers. The first pair of rollers is the preheating roller, with a drawing temperature of 80 ℃ and a heating time of 10 s. The second pair of hot rollers is the pre-stretching roller, with a stretching ratio of 1.2 times and a temperature of 90 ℃. The third pair of rollers is the main stretching roller, with a stretching ratio of 3.4.0 times and a temperature of 140 ℃ and a heating time of 5 s. The fourth pair of rollers is the secondary stretching roller, with a stretching ratio of 1.4 times and a heating temperature of 150 ℃. The fifth pair of rollers is the heat setting roller, with a heating temperature of 190 ℃ and a heating time of 7 s.

[0066] The second-stage oiling agent is a fluorine-free anti-wicking oil absorbent prepared by the above method. The oiling agent is applied by an oiler at a speed of 5 mL / min, the oiling agent temperature is controlled at 30 ℃, and the oiling rate is 0.43%.

[0067] Curing was performed at a wavelength of 363 nm and an intensity of 80 mW / cm. 2 Exposure to ultraviolet light for 58 seconds.

[0068] The resulting antiwicking polyester industrial yarn has a strength of 7.5 cN / dtex and a wicking height of 4 cm.

[0069] Example 5

[0070] Add 7 parts by mass of polyethylene wax, 7 parts by mass of 2-hydroxy-2-methyl-1-phenyl-1-propanone, and 50 parts by mass of trimethylolpropane triacrylate (TMPTA) to 70 parts by mass of polyether acrylate prepolymer (TPULP9215). After thorough mixing, a fluorine-free oiling agent component is obtained. The obtained fluorine-free oiling agent component is added to FDY spinning oiling agent TF-710 at an addition ratio of 20% to obtain a fluorine-free anti-core oil absorption agent.

[0071] Polyester spinning adopts the melt spinning method. The melt passes through the spinneret and then passes through the slow cooling side blowing and bundling. After one oiling, it goes through multiple stretching and a second oiling on the heat setting roller. It is then rapidly cured online with strong ultraviolet light and then wound to prepare fluorine-free acrylate antiwicking polyester industrial yarn.

[0072] The polyester used is a high-viscosity chip with an intrinsic viscosity of 1.2 dL / g and a melt spinning temperature of 290 ℃.

[0073] The first oiling agent is FDY spinning oil TF-710, which is applied using an oiler at a speed of 5 mL / min. The oil temperature is controlled at 0.30℃, and the oiling rate is 0.40%.

[0074] The oiled yarn is drawn using five pairs of rollers. The first pair of rollers is the preheating roller, with a drawing temperature of 80 ℃ and a heating time of 10 s. The second pair of hot rollers is the pre-stretching roller, with a stretch ratio of 1.4 times and a temperature of 100 ℃. The third pair of rollers is the main stretching roller, with a stretch ratio of 4.2 times and a temperature of 150 ℃ and a heating time of 15 s. The fourth pair of rollers is the secondary stretching roller, with a stretch ratio of 1.5 times and a heating temperature of 180 ℃. The fifth pair of rollers is the heat setting roller, with a heating temperature of 200 ℃ and a heating time of 7 s.

[0075] The second-stage oiling agent is a fluorine-free anti-core oil absorbent prepared by the above method. The oiling agent is applied by an oiler at a speed of 4 mL / min, the oiling agent temperature is controlled at 40 ℃, and the oiling rate is 0.45%.

[0076] Curing was performed at a wavelength of 365 nm and an intensity of 100 mW / cm. 2 Expose to ultraviolet light for 60 seconds.

[0077] The resulting antiwicking polyester industrial yarn has a strength of 8.0 cN / dtex and a wicking height of 9 cm.

[0078] The above-described embodiments are merely illustrative of several feasible implementations of the present invention, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the present invention, nor are the embodiments intended to limit the scope of protection in the claims of the present invention. For those skilled in the art, various modifications and improvements can be made without departing from the concept of the present invention. All equivalent implementations or changes that do not depart from the present invention should be included in the technology of the present invention.

Claims

1. A method for preparing fluorine-free, wicking-resistant polyester industrial yarn based on acrylate, characterized in that, The steps are as follows: Step 1: Add dispersant, photoinitiator, and reactive diluent to the acrylate prepolymer, mix thoroughly to obtain a fluorine-free oiling agent component. Add the fluorine-free oiling agent component to a conventional spinning oiling agent to obtain a fluorine-free anti-wicking oil-absorbing agent. The addition ratio of the fluorine-free oiling agent component to the spinning oiling agent is 15-20%. Step 2: Polyester chips are melt-extruded, cooled, bundled, and after one oiling, they are stretched and then applied a second oiling on heat-setting rollers. The oiling agent for the second oiling is the fluorine-free anti-core oil-absorbing agent from Step 1. Step 3: Apply strong ultraviolet light for online curing, then wind to obtain the finished fluorine-free antiwicking polyester industrial yarn, with a strength of 7.2-8.0 cN / dtex and a wicking height of 3-9 cm; The mass percentage of each component in the fluorine-free oil agent is as follows: Acrylic prepolymer: 50-70 Dispersant: 2-7, Photoinitiator: 2-7, Reactive diluent: 20-50; The acrylate prepolymer is any one of epoxy acrylate prepolymer, polyurethane acrylate prepolymer, polyester acrylate prepolymer, silicone-modified acrylate prepolymer, and polyether acrylate prepolymer; The photoinitiator is 2,4,6-trimethylbenzoyl-diphenylphosphine oxide or 2-hydroxy-2-methyl-1-phenyl-1-propanone; the reactive diluent is trimethylolpropane triacrylate or tripropylene glycol diacrylate. The first oiling step uses conventional spinning oil, and the oiling method is oiling with an oiling wheel or oiling nozzle. The oiling speed is 1-5 mL / min, the oiling agent temperature is controlled at 20-30 ℃, and the oiling rate is 0.30-0.40%. In step two, the oiled yarn is drawn using five pairs of rollers. The first pair of rollers is the preheating roller, with a drawing temperature of 70–80 ℃ and a heating time of 5–10 s. The second pair of hot rollers is the pre-stretching roller, with a stretching ratio of 1.2–1.4 times and a temperature of 90–100 ℃. The third pair of rollers is the main stretching roller, with a stretching ratio of 3.7–4.2 times and a temperature of 100–150 ℃ and a heating time of 5–15 s. The fourth pair of rollers is the secondary stretching roller, with a stretching ratio of 1.3–1.5 times and a heating temperature of 150–180 ℃. The fifth pair of rollers is the heat setting roller, with a heating temperature of 180–200 ℃ and a heating time of 5–7 s.

2. The method for preparing an acrylate-based fluorine-free antiwicking polyester industrial yarn according to claim 1, characterized in that: The acrylate prepolymer is any one of DH-3066, photomer6363, photomer5806, SJ-804, and TPULP9215.

3. The method for preparing an acrylate-based fluorine-free antiwicking polyester industrial yarn according to claim 1, characterized in that: In step two, the intrinsic viscosity of the polyester chips is 0.8–1.2 dL / g, and the melt extrusion temperature is 290–305℃.

4. The method for preparing an acrylate-based fluorine-free antiwicking polyester industrial yarn according to claim 1, characterized in that: After the oiling point is selected and the shaping section is determined, the oiling method is to use an oiler or an oil nozzle. The oiling speed is 1 to 5 mL / min, the oil temperature is controlled at 20 to 40 ℃, and the oiling rate is 0.35 to 0.45%.

5. The method for preparing an acrylate-based fluorine-free antiwicking polyester industrial yarn according to claim 1, characterized in that: In step three, the wavelength of the strong ultraviolet light is 360–365 nm, and the intensity is 50–100 mW / cm². 2 Irradiation time: 50-60 seconds.