Anti-wicking component as well as preparation method and application thereof

Abstract

The invention provides an anti-wicking component as well as a preparation method and application thereof, and belongs to the technical field of treatment preparations for fiber modification. The anti-wicking component is resistant to high temperature of 200 DEG C or above and comprises a first monomer, a second monomer, an emulsifier and water, the first monomer is ethyl acrylate, n-butyl acrylate or acrylamide, the second monomer is methyl methacrylate or butyl acrylate, the catalyst is azodiisobutyronitrile or azodiisobutyronitrile, and the emulsifier is an emulsifier. The emulsifier is any one of 2-acrylamido-2-methylpropanesulfonic acid, 2-(diethanol amino) ethanesulfonic acid, hexadecyl trimethyl chloride and lauryl sodium sulfate. The anti-wicking component provided by the invention not only has a good anti-wicking effect, but also has good compatibility with other modified preparations, and can realize multi-functionalization of the oiling agent.

Description

Technical Field

[0001] The present application relates to an anti-wicking component and a preparation method and application thereof, belonging to the technical field of treatment preparations for fiber modification. Background Art

[0002] Polyester fiber multifilaments are usually composed of multiple monofilaments, such as the typical specification 1000D / 192f, which is composed of 192 monofilaments. When the fabric is immersed in liquid, the gaps between the monofilaments will cause the water absorption rate to increase due to the wicking effect. In outdoor scenes such as light box advertising cloth and swimming pool base cloth, the wicking effect and fabric water absorption will significantly affect the use effect.

[0003] At present, the waterproof function of polyester fiber is mostly achieved by coating the fiber surface with an anti-wicking oil agent. Due to the characteristics of high electronegativity and low surface energy, fluorine-containing oil agents have excellent waterproof and oil-proof properties, from the earliest C8 waterproof agent to C6 waterproof agent. However, fluorine-containing substances are prone to bioaccumulation, posing huge challenges to human health and the ecological environment. The EU has gradually restricted the use of fluorine-containing substances since 2006, and will completely eliminate their use in Europe by 2026.

[0004] However, there are few types of fluorine-free water repellents on the market. In addition, for the harsh environment of polyester industrial yarn spinning process, such as temperature up to 250°C, stretching ratio up to 6 times, high hydrophobicity, etc., the commercially available oils generally show the following disadvantages:

[0005] 1. The anti-wicking effect is not good and cannot achieve the effect of 0 wicking (≤10mm);

[0006] 2. It has a great impact on the spinning conditions and is prone to cause breakage, hairline hair, roller entanglement, etc.

[0007] 3. Poor heat resistance, easy to scale in high temperature environment, affecting the dry heat shrinkage rate and uniformity of the product.

[0008] Based on this, this application is filed. Summary of the invention

[0009] In view of this, the present application first provides an anti-wicking component, which not only has a good anti-wicking effect, but also has good compatibility with other modified preparations, thereby realizing the multifunctionality of the oil agent.

[0010] Specifically, the present application is implemented through the following scheme:

[0011] An anti-wicking component, which is resistant to high temperatures of 200°C and above, comprises the following components:

[0012] First monomer: ethyl acrylate (EA), n-butyl acrylate (BA) or acrylamide (AAM), 22-45%;

[0013] Second monomer: methyl methacrylate or butyl acrylate, 4-10%;

[0014] Catalyst: azobisisobutylamine hydrochloride (AIBA) or azobisisobutylonitrile (AIBN), 0.1-1.0%;

[0015] Emulsifier: any one of 2-acrylamido-2-methylpropanesulfonic acid, 2-(diethanolamino)ethanesulfonic acid, hexadecyltrimethyl bromide (CTAB), sodium dodecyl sulfate, 1-10%;

[0016] The balance is water.

[0017] The anti-wicking component constructed above has the following core advantages:

[0018] 1. It does not contain fluorine and is an environmentally friendly latex anti-wicking component;

[0019] 2. Adding components to help oil spread and antistatic components to protect the fiber during the spinning process, and the spinnability is better;

[0020] 3. The anti-wicking component has good heat resistance and can be used at high temperatures of 200°C and above. It can be directly used in the fiber forming process to achieve oiling before entering the hot roller. After being coated on the fiber surface, it forms a film on the fiber surface after being cured at a high temperature of up to 250°C by the hot roller, giving the fiber durable anti-wicking properties.

[0021] Further, as a preference:

[0022] The addition amount of the first monomer is 12-28%, the addition amount of the second monomer is 6-7%, the addition amount of the catalyst is 0.4-0.8%, and the addition amount of the emulsifier is 4-7%, giving the anti-wicking component an upper temperature resistance limit of 230-255°C.

[0023] The added mass ratio of the first monomer to the second monomer is preferably controlled at 2 to 4:1, preferably 4:1.

[0024] The second object of the applicant is to provide a method for preparing the anti-wicking component, the process is as follows:

[0025] Step 1, adding the first monomer, the second monomer and the emulsifier into deionized water, and stirring at 30-45° C. to homogenize;

[0026] Step 2: ultrasonically disperse the mixture at room temperature to obtain a stable pre-emulsion;

[0027] Step 3: The pre-emulsion is heated to 50-80° C., an aqueous solution of a catalyst is added, and the reaction is completed by heat preservation to obtain a milky white emulsion, which is the anti-wicking component.

[0028] More preferably,

[0029] In step 1, homogenize at a speed of 4000-5500 r / min for 10-20 min, and then homogenize at a speed of 8000-12000 r / min for 30-40 min.

[0030] In step 2, the ultrasonic power is 30 to 60 Hz, and the dispersion time is 10 to 30 minutes.

[0031] In step 3, the pre-emulsion is heated from room temperature to the reaction temperature at a rate of 1.5-2°C / min.

[0032] The above preparation process realizes the emulsification of each component, ensuring that the finished anti-wicking component presents a uniform emulsion and has stable performance.

[0033] The third object of the applicant is to provide the application of the above anti-wicking component, mixing the anti-wicking component with a smoothing agent, an emulsifier, an antistatic agent, an antibacterial agent and water to form a functional oil, and the composition of each component is as follows:

[0034] Anti-wicking component: 25-40%,

[0035] Smoothing agent: 12-25%,

[0036] Emulsifier: 10-18%,

[0037] Antistatic agent: 2-8%,

[0038] Antimicrobial agent: 1-5%,

[0039] The balance is water,

[0040] The lubricant is any one of polyoxyethylene-polyoxypropylene polyether copolymer, nonylphenol polyoxyethylene ether (such as: Guangzhou Hewei Pharmaceutical Technology Co., Ltd., NP 40), isomeric tridecanol polyoxyethylene ether (such as: BASF, TO3 / 1303), fatty acid polyoxyethylene ester, hydrogenated castor oil polyoxyethylene ether,

[0041] The emulsifier is castor oil polyoxyethylene ether or hydrogenated castor oil polyoxyethylene ether.

[0042] The anti-wicking component of the present application is combined with an antistatic agent and an antibacterial agent to form a multifunctional functional oil agent that has anti-wicking, antistatic and antibacterial properties. The anti-wicking component is combined with a smoothing agent and an emulsifier to give the oil product excellent viscosity and uniformity, ensuring uniform oiling and good spinning conditions, and achieving a better and longer-lasting anti-wicking effect.

[0043] More preferably,

[0044] The antistatic agent is any one of alkyl sulfonate, alkyl phosphate, sodium docusate and quaternary ammonium salt, which is matched with the anti-wicking component to increase the cohesiveness of the filament bundle and avoid the phenomenon of hardening of the single filament caused by the film formation of the anti-wicking component.

[0045] The antibacterial agent is methyl parahydroxybenzoate or butyl parahydroxybenzoate, which, in combination with the anti-wicking component, gives the functional oil agent good stability, thereby preventing the functional oil agent from being corrupted and deteriorated during storage and use.

[0046] The preparation method of the functional oil is as follows: add water to the anti-wicking component and heat it to 30-45°C, add a smoothing agent and an emulsifier under stirring, then add an antistatic agent and an antibacterial agent, stir until a transparent homogeneous state, and cool to room temperature to obtain the functional oil. DETAILED DESCRIPTION

[0047] In order 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 in combination with the specific cases 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 used to limit the technical solutions of this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] Example 1

[0049] 1. Preparation of anti-wicking components:

[0050] 40g of ethyl acrylate (EA, about 26.32% by mass), 10g of methyl methacrylate (about 6.57% by mass) and 10g of 2-(diethanolamino)ethanesulfonic acid (about 6.57% by mass) were dissolved in 91g of deionized water (about 59.88% by mass), mixed, stirred and dispersed evenly at 35°C, and homogenized at 5000r / min; after the addition was completed, homogenized at 10000r / min for 35min, and ultrasonically dispersed at 50Hz for 30min at room temperature to obtain a stable pre-emulsion; then placed in a four-necked flask with stirring, slowly heated to 60°C at 1.5°C / min, 1g of azobisisobutyronitrile (AIBN, about 0.66% by mass) aqueous solution was added within 60min, and the mixture was kept warm for reaction for 360min to obtain a milky white emulsion, which is the anti-wicking component.

[0051] 2. Anti-wicking components are used in the preparation of functional oils:

[0052] Add 30g of deionized water to a four-necked flask, take 30g of the above emulsion, heat to 40°C, stir for 20min, then slowly add 20g of nonylphenol polyoxyethylene ether (Guangzhou Hewei Pharmaceutical Technology Co., Ltd., NP 40), 14g of hydrogenated castor oil polyoxyethylene ether, and then add 5g of sodium dodecyl sulfate and 1g of butyl p-hydroxybenzoate (paraben), stir for 2h until a transparent homogeneous state, and discharge at room temperature to obtain a functional oil.

[0053] 3. Oiling of functional oil:

[0054] 10 kg of crude oil type GXM-100 oil of Matsumoto Oil Co., Ltd. was taken as the base oil, kept in an oil barrel at 50°C, deionized water and a functional oil with an effective concentration (i.e., solid content) of 30% were added, and a mixed oil was prepared in a manner that the mass ratio of the base oil and the functional oil effective components was 1:1. The oil tanker speed was controlled as shown in Table 1, and oil was applied in front of the hot roller (1+2 roller) in a double-row oil nozzle manner. During the oiling process, a wire pressing rod was used to press the middle of the oil tanker.

[0055] The spinning parameters are as follows:

[0056] 1+2 roller: 496m / min;

[0057] 3+4 rollers: 516m / min, 90℃;

[0058] 5+6 rollers: 1950m / min, 120℃;

[0059] 7+8 rollers: 2920 m / min, 232°C;

[0060] 9+10 rollers: 2737m / min, 226℃;

[0061] Winding speed: 2600m / min,

[0062] The tension is controlled at 81cN and the mesh pressure is 1.6bar.

[0063] Table 1: Comparison of oiling effects at different tanker speeds

[0064] Serial number Tanker speed Oiling rate (%) 1 1rpm 0.6 2 5rpm 1.0 3 8rpm 1.4 4 15rpm 1.6 5 20rpm 1.7 6 25rpm 1.8 7 30rpm 2.0 .

[0065] It can be seen from Table 1 that under the same conditions, as the speed of the oil tanker increases, the oiling rate gradually increases, and when the speed of the oil tanker increases to 20rpm, the oiling rate increases slowly, indicating that the maximum amount of oil attached to the fiber surface in this case reaches about 2.0%.

[0066] Based on the results in Table 1, the oil wheel speed is selected to be 15-20 rpm, the oiling ratio is 1.6%, and the above-mentioned spinning scheme is adopted. Taking G1005SP (specification 1110dtex / 192f) as an example, the overall physical properties and anti-wicking indexes are tested after spinning. The performance of multiple batches of finished products under the same process conditions is shown in Table 2.

[0067] Table 2: Finished product performance comparison table

[0068]

[0069] It can be seen from Table 2 that the fiber breaking strength is maintained at around 7.0 cN / dtex, the breaking elongation is around 24%, the dry heat shrinkage is about 2.2%, the oil content is 1.6%, the average wicking height is 3.45 mm at the lowest and 4.88 mm at the highest, which meets the relevant standards for anti-wicking polyester industrial yarn [Anti-wicking Polyester Industrial Filament (T / CCFA01035-2018)] and the requirements of downstream customers. It proves that the functional oil prepared in this case can give the fiber good wicking performance.

[0070] Example 2

[0071] The configuration of this embodiment is the same as that of embodiment 1, except that the effect of the amount of the second monomer added on the oiling performance is shown in Table 3.

[0072] Table 3: Effect of the amount of the second monomer added on oiling performance

[0073]

[0074]

[0075] In the present application, when the first monomer is used alone and the second monomer is not added, a long-chain acrylic polymer cannot be formed, and therefore has basically no anti-wicking effect (see sequence number 9 in Table 3); with the addition of the second monomer, the second monomer and the first monomer undergo a polymerization reaction to achieve a synergistic anti-wicking effect. As can be seen from Table 3, its effect on performance is mainly manifested in the effect on strength and elongation at break: with the increase in the amount of the second monomer added, the fiber strength increases and the elongation decreases; there is basically no effect on the dry heat shrinkage rate.

[0076] Therefore, the addition amount of the second monomer relative to the first monomer is appropriately controlled at 1:2-4, and its addition amount in the anti-wicking component is appropriately controlled at 4-10%. At this time, the wicking height is basically controlled at around 10 mm, and it is best to add the second monomer at around 5-9%. At this time, the wicking height is basically maintained within 10 mm; especially when the second monomer: first monomer = 1:4 (mass ratio) and the mass percentage of the second monomer added in the anti-wicking component is 6%, the anti-wicking effect is best, and the wicking height is about 3.5 mm.

[0077] Example 3

[0078] The configuration of this embodiment is the same as that of embodiment 1, except that the amount of catalyst added is as shown in Table 4.

[0079] The catalyst catalyzes the polymerization reaction of the monomer, but compared with the long-chain structure of polyester, the catalyst is mostly small molecules, which acts like a "blade" on the fiber surface, not only easily producing lint or broken ends, but also easily coking on the surface of the hot roller.

[0080] Table 4: Effect of catalyst dosage on product performance

[0081]

[0082] From the data in Table 4, it can be seen that: with the increase in the amount of catalyst added, under the same reaction time, the iodine value first shows a decreasing trend, and then after the addition exceeds 0.5%, the iodine value turns to an increasing trend. The higher the iodine value and the more double bonds in the reaction system, the less sufficient the reaction is. These incompletely reacted materials are more likely to coke and smoke when passing through the high temperature of the hot roller, and the uniformity of dry heat is deteriorated. Therefore, the amount of catalyst added should not be too high. Too much catalyst not only does not significantly increase the reaction rate, but also increases the cost of industrial large-scale production. Therefore, when the amount of catalyst added in the anti-wicking component is controlled at 0.1-1.0%, the wicking height can be controlled within the range of about 10 mm or not more than 10 mm; but considering the spinning conditions and the coking of the hot roller, it is better to be around 0.4-0.8%.

[0083] When the catalyst was replaced by AIBA, its addition amount showed the same influence trend as AIBN.

[0084] Example 4

[0085] The configuration of this embodiment is the same as that of embodiment 1, except that the amount of emulsifier used is as shown in Table 5.

[0086] Table 5: Effect of emulsifier dosage on oiling performance

[0087] Serial number Emulsifier dosage Breaking strength, cN / dtex Wicking height, mm 1 2％ 6.93 14.3 2 4％ 7.02 10.2 3 6％ 7.13 4.1 4 8％ 7.04 8.2 5 10％ 6.92 10.7 .

[0088] In this application, the emulsifier not only ensures the stability of the emulsion, so that it does not stratify during long-term storage; it also gives it good permeability, so that the oil solution can quickly spread on the fiber surface as a film. However, if the emulsifier is added in too much amount (such as more than 8%), it will make it difficult for the oil to remain on the fiber surface, resulting in more waste. Therefore, the amount of emulsifier added to the anti-wicking component is appropriately controlled at 1-10%, and 6-8% is the best, at which time the wicking height is controlled within 10mm.

[0089] Example 5

[0090] The configuration of this embodiment is the same as that of embodiment 1, except that the compositions of the first monomer and the second monomer are as shown in Table 6.

[0091] Table 6: Effect of different monomers on oiling effect

[0092]

[0093]

[0094] The selected monomers in this case can achieve a wicking height of less than 10 mm. When the first monomer is ethyl acrylate (EA), n-butyl acrylate (BA) or acrylamide (AAM), and the second monomer is methyl methacrylate or butyl acrylate, the oiling effect of the oil obtained by different combinations is different: when n-butyl acrylate is used, the wicking height is slightly lower than EA. This is because the longer methylene chain hydrophobic segment in n-butyl acrylate reacts with the hydroxyl group on the fiber to form a chemical bond, which can improve the waterproof performance of the fiber. The waterproof effect of acrylamide is not as good as that of acrylates.

[0095] Example 6

[0096] The configuration of this embodiment is the same as that of embodiment 1, except that the preparation process of the anti-wicking component is different, specifically: raw materials of the anti-wicking components having the same composition as that of embodiment 1 are respectively taken, and the raw materials are directly mixed to form the anti-wicking components.

[0097] Table 7: Effect of different anti-wicking component preparation processes

[0098]

[0099] Compared with the compounding method of Example 1, when the oil agent obtained by the direct mixing method (sequence number 2 in Table 7) is used for spinning, under the same oil content, the spinning condition deteriorates, the number of end hairs and the number of breakages are significantly increased, and the finished polyester industrial yarn has basically no wicking effect; it can be seen that the anti-wicking component provided by the present application requires specific conditions to obtain a product with anti-wicking effect and stable mechanical properties; the direct mixing method cannot achieve the same effect.

[0100] In the same preparation process, the blank group (No. 3 in Table 7) without adding the anti-wicking component of the present application has a lower oil content and also shows basically no wicking effect. This shows that the anti-wicking effect of the oil agent requires the anti-wicking component and multiple components such as antistatic agent, smoothing agent, and antibacterial agent to work together.

[0101] Comparative Example 1

[0102] This case uses a common anti-wicking oil agent for oiling. Compared with Example 1, the main differences are as follows:

[0103] Table 8: Performance comparison of functional oils from different sources

[0104]

[0105] Compared with Japan's Daikin's TG-5574 fluorine-containing oil, XF5537C fluorine-free oil and the United States' fluorine-free oil FT-621, the oil provided in this case not only has a better wicking level than imported fluorine-containing oils, but the oil of this application is also fluorine-free, and all use green, environmentally friendly and easily available substances as raw materials, and are formulated after emulsion polymerization. Its cost, safety and preparation method are better than imported fluorine-containing oils; compared with imported fluorine-free oils, the average wicking height of the oil of this application is significantly lower, basically meeting the standard of zero wicking, and the comprehensive spinning condition and wicking effect are better than imported fluorine-free oils.

[0106] Comparative Example 2

[0107] Taking CN1493601A as comparative example 2, CN1493601A uses two monomers, an emulsifier and water to obtain a fluorinated copolymer in an aqueous medium through pre-emulsification and polymerization as an emulsion of a water-based fluorinated poly-water-and-oil-polymer. This solution uses a fluorinated copolymer, which is mainly used for water-repellent and oil-repellent finishing of oilfield labor protection clothing fabrics, and is added during the fabric finishing process. If it is used in the spinning stage, it will have defects such as poor cohesion of the yarn bundle and low mechanical properties; while the anti-wicking component of this case needs to be blended with the basic oil agent, which is mainly used for water repellency without oil repellency.

[0108] Comparative Example 3

[0109] CN105887487A is used as comparative example 3, which uses acrylic latex, emulsifier, hexafluorocarbon waterproof and oil-proof agent and water to obtain a water-repellent and oil-repellent modified acrylic adhesive. The formula provided by this scheme is mainly used for polyester spunbond non-woven fabrics, and is used in combination with other components as an adhesive. However, for the application object of this case, polyester industrial yarn, due to the special processing requirements such as high temperature and high-ratio stretching during the spinning process, comparative example 3 cannot meet the comprehensive properties such as temperature resistance, lubrication, and antistatic.

[0110] The above-mentioned embodiments only express several feasible implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention, and the embodiments are not used to limit the scope of protection in the claims of the present invention. For ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, and 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. An anti-wicking component, It is characterized in that The anti-wicking component is resistant to high temperatures of 200°C and above, and includes the following components: First monomer: ethyl acrylate, n-butyl acrylate or acrylamide, 22~45%; Second monomer: methyl methacrylate or butyl acrylate, 4~10%; Catalyst: azobisisobutylamine hydrochloride or azobisisobutylonitrile, 0.1~1.0%; Emulsifier: any one of 2-acrylamido-2-methylpropanesulfonic acid, 2-(diethanolamino)ethanesulfonic acid, hexadecyltrimethyl bromide, sodium dodecyl sulfate, 1-10%; The balance is water.

2. An anti-wicking component according to claim 1, Features: The addition amount of the first monomer is 12-28%, the addition amount of the second monomer is 6-7%, the addition amount of the catalyst is 0.4-0.8%, the addition amount of the emulsifier is 4-7%, and the upper temperature resistance limit is 230-255°C.

3. A method for preparing the anti-wicking component according to claim 1, It is characterized in that Here are the steps: Step 1, adding the first monomer, the second monomer and the emulsifier into deionized water, and stirring at 30-45° C. to homogenize; Step 2: ultrasonically disperse the mixture at room temperature to obtain a stable pre-emulsion; Step 3: The pre-emulsion is heated to 50-80° C., an aqueous solution of a catalyst is added, and the reaction is completed by heat preservation to obtain a milky white emulsion, which is the anti-wicking component.

4. The method for preparing the anti-wicking component according to claim 3, Features: In step 1, homogenize at a speed of 4000-5500 r / min for 10-20 min, and then homogenize at a speed of 8000-12000 r / min for 30-40 min.

5. The method for preparing the anti-wicking component according to claim 3, Features: In step 2, the ultrasonic power is 30-60 Hz, and the dispersion time is 10-30 min.

6. The method for preparing the anti-wicking component according to claim 3, Features: In step 3, the pre-emulsion is heated from room temperature to the reaction temperature at a rate of 1.5-2°C / min.

7. A use of the anti-wicking component according to claim 1, It is characterized in that The anti-wicking component is mixed with a smoothing agent, an emulsifier, an antistatic agent, an antibacterial agent and water to form a functional oil, and the composition of each component is as follows: Anti-wicking component: 25~40%, Smoothing agent: any one of polyoxyethylene-polyoxypropylene polyether copolymer, nonylphenol polyoxyethylene ether, isomeric tridecanol polyoxyethylene ether, fatty acid polyoxyethylene ester, hydrogenated castor oil polyoxyethylene ether, 12-25%, Emulsifier: castor oil polyoxyethylene ether or hydrogenated castor oil polyoxyethylene ether, 10~18%, Antistatic agent: 2~8%, Antimicrobial agent: 1~5%, The balance is water.

8. Use of the anti-wicking component according to claim 7, Features: The antistatic agent is any one of alkyl sulfonate, alkyl phosphate, docusate sodium and quaternary ammonium salt.

9. Use of the anti-wicking component according to claim 7, Features: The antibacterial agent is methylparaben or butylparaben.

10. Use of the anti-wicking component according to claim 7, It is characterized in that The preparation method of the functional oil is as follows: adding water to the anti-wicking component and heating it to 30-45° C., first adding a smoothing agent and an emulsifier under stirring, then adding an antistatic agent and an antibacterial agent, stirring until a transparent homogeneous state, and cooling to room temperature to obtain the functional oil.

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