Anti-wicking component

Abstract

The invention provides an anti-wicking component, and belongs to the technical field of treatment preparations for fiber modification. The anti-wicking component resists the high temperature of 235 DEG C or above and comprises a first monomer, a second monomer, an emulsifier and water, the first monomer is octadecyl methacrylate or octadecyl acrylate, the second monomer is hydroxyethyl methylacrylate or hydroxypropyl acrylate, the catalyst is azodiisobutyronitrile hydrochloride 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 belongs 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 it is impossible to achieve the effect of zero wicking (wicking height ≤ 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 provides an anti-wicking component, which not only has a good anti-wicking effect, but also has good compatibility with other modified preparations, and can realize 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 235°C and above, especially high temperatures of 200-250°C, comprises the following components:

[0012] First monomer: octadecyl methacrylate (SMA) or octadecyl acrylate (SA), 20-50%;

[0013] Second monomer: hydroxyethyl methacrylate or hydroxypropyl acrylate, 3-15%;

[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 150°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 23.5-42%, the addition amount of the second monomer is 4-6%, the addition amount of the catalyst is 0.3-0.6%, and the addition amount of the emulsifier is 2-6%, giving the anti-wicking component an upper temperature resistance limit of 240-260°C.

[0023] The added mass ratio of the first monomer to the second monomer is preferably controlled at 5 to 7:1.

[0024] The anti-wicking component is prepared by the following steps:

[0025] Step 1, adding the first monomer and the second monomer in proportion and mixing them to form an oil phase;

[0026] Step 2, adding emulsifier and water to the oil phase, and stirring with magnetic force to obtain a crude emulsion;

[0027] Step 3, in an ice water bath, the coarse emulsion is ultrasonically broken into a fine emulsion;

[0028] Step 4: heat the mini-emulsion to 70-90° C., add a catalyst and water, initiate the polymerization reaction, filter the material, and obtain the anti-wicking component.

[0029] More preferably,

[0030] In step 3, the ultrasonic power is 300-600W, and the ultrasonic fragmentation time is 10-30min.

[0031] In step 4, the catalyst is dissolved in water and then added to the miniemulsion.

[0032] In step 4, the filtration fineness is 100 to 200 μm.

[0033] 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.

[0034] 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:

[0035] Anti-wicking component: 20-50%,

[0036] Smoothing agent: 10-30%,

[0037] Emulsifier: 10-25%,

[0038] Antistatic agent: 2-10%,

[0039] Antimicrobial agent: 1-10%,

[0040] The balance is water,

[0041] After adding water to the anti-wicking component, the temperature is raised to 30-45°C, and a smoothing agent and an emulsifier are first added under stirring, and then an antistatic agent and an antibacterial agent are added, and the mixture is stirred until a transparent homogeneous state is obtained, and then cooled to room temperature to obtain a functional oil.

[0042] The above scheme combines the anti-wicking component with an antistatic agent and an antibacterial agent to form a functional oil agent that has the multifunctional properties of anti-wicking, antistatic and antibacterial. 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 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, and hydrogenated castor oil polyoxyethylene ether.

[0045] The emulsifier is castor oil polyoxyethylene ether or hydrogenated castor oil polyoxyethylene ether.

[0046] 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.

[0047] 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.

[0048] The functional oil is mixed with the basic spinning oil, the mass ratio of the basic oil to the functional oil anti-wicking effective component is 1:0.8-1.2, and the oil is applied before entering the hot roller. Common basic spinning oils include: GXM-100 oil of Matsumoto Oil Co., Ltd., HLM-100 oil of Matsumoto Oil Co., Ltd., and NS-5030 of Jinpu New Materials Co., Ltd. DETAILED DESCRIPTION

[0049] 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.

[0050] Example 1

[0051] 1. Preparation of anti-wicking components:

[0052] The oil phase formed by mixing 33g of octadecyl methacrylate (SMA, about 23.5% by mass) and 5.8g of hydroxyethyl methacrylate (about 4.2% by mass) was added to a solution containing 7g of 2-acrylamido-2-methylpropanesulfonic acid (about 5.0% by mass) and 94mL of H2O (about 67.0% by mass), and the mixture was stirred magnetically for 30min to obtain a crude emulsion; the crude emulsion was transferred to an ice-water bath, and under magnetic stirring, the crude emulsion was sheared and crushed into a fine emulsion using an ultrasonic cell disruptor, with an ultrasonic power of 400W for 20min; the obtained fine emulsion was transferred to a four-necked flask equipped with a condenser, a thermometer, a stirring paddle and a nitrogen inlet and outlet, and immersed in a water bath; nitrogen was passed through the four-necked flask for 30min, and the fine emulsion was heated to 80°C; 0.4g of AIBA catalyst (mass percentage of about 0.3%) was dissolved in a small amount of deionized water and injected into the emulsion to initiate polymerization. The reaction was carried out at a constant temperature of 80°C for 4 hours. After cooling, the material was filtered through a fine gauze with a pore size of 150um and the obtained emulsion was the anti-wicking component.

[0053] 2. Anti-wicking components are used in the preparation of functional oils:

[0054] 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 polyoxyethylene-polyoxypropylene polyether copolymer (Zhongshan New Materials, PEG600), 14g of castor oil polyoxyethylene ether, then add 5g of sodium dodecyl sulfate, 1g of butyl paraben (paraben), stir for 2h until a transparent homogeneous state, discharge at room temperature, and obtain a functional oil agent.

[0055] 3. Oiling of functional oil:

[0056] Take 10 kg of Matsumoto Oil Co., Ltd.'s crude oil type GXM-100 oil as the base oil, keep it in an oil barrel at 50°C, add deionized water and a functional oil with an effective concentration (i.e., solid content) of 30%, and prepare a mixed oil in a mass ratio of 1:1 between the base oil and the functional oil's anti-wicking effective ingredients. Control the oil wheel speed as shown in Table 1, and apply oil before entering the hot roller (1+2 roller).

[0057] The spinning parameters are as follows:

[0058] 1+2 roller: 496m / min;

[0059] 3+4 rollers: 516m / min, 90℃;

[0060] 5+6 rollers: 1950m / min, 120℃;

[0061] 7+8 rollers: 2920m / min, 240℃;

[0062] 9+10 roller: 2737m / min, 235℃;

[0063] Winding speed: 2600m / min.

[0064] Table 1: Comparison of oiling effects at different tanker speeds

[0065]

[0066]

[0067] It can be seen from Table 1 that under the same conditions, when the oil tanker speed is controlled to be 1-30rpm, the content of the oil agent attached to the fiber is 0.6-2.0% of the total fiber amount. Among them, as the oil tanker speed increases, the oiling rate gradually increases. When the oil tanker speed increases to 20rpm, the oiling rate increases slowly. This shows that the maximum amount of oil agent attached to the fiber surface in this case is about 2.0%. Comprehensively considering the results in Table 1, it is more appropriate to select a tanker speed of 5-15rpm.

[0068] Using 15rpm, oiling ratio of 1.6%, combined with the above spinning process and oil composition, spinning G1005SP (specification 1110dtex / 192f) is taken as an example. After spinning, the overall physical properties and anti-wicking indexes are tested. The performance of multiple batches of finished products under the same process conditions is shown in Table 2.

[0069] Table 2: Finished product performance comparison table

[0070]

[0071] 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 25%, the dry heat shrinkage is about 2.4%, the wicking height is 4.5 mm at the lowest and 6.9 mm at the highest, which meets the relevant standards for anti-wicking polyester industrial yarn [Anti-wicking Polyester Industrial Filament (T / CCFA 01035-2018)] and the requirements of downstream customers. It proves that the functional oil prepared in this case can give the fiber good wicking performance.

[0072] Example 2

[0073] 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.

[0074] Table 3: Effect of the amount of the second monomer added on oiling performance

[0075]

[0076] 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.

[0077] Therefore, the addition amount of the second monomer relative to the first monomer is appropriately controlled at 1:5-7, and its addition amount in the anti-wicking component is appropriately controlled at 3-15%. At this time, the wicking height is basically controlled within 20 mm, and it is best to add the second monomer at around 4-8%. At this time, the wicking height is basically maintained within 10 mm; especially when the second monomer is added at a mass percentage of 6% in the anti-wicking component, the anti-wicking effect is best, and the wicking height is about 3.2 mm.

[0078] Example 3

[0079] 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.

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

[0081]

[0082]

[0083] 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.

[0084] From the data in Table 4, it can be seen that: with the increase of the amount of catalyst added, under the same reaction time, the iodine value first shows a decreasing trend, and after the addition exceeds 0.6%, 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 inadequately 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 has no significant increase in the reaction rate, but also increases the cost of industrial mass production. Therefore, when the amount of catalyst added in the anti-wicking component is appropriately 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 0.3-0.6%.

[0085] When the catalyst was replaced by AIBA, its addition amount showed the same influence trend as AIBN.

[0086] Example 4

[0087] 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.

[0088] Table 5: Effect of emulsifier dosage on oiling performance

[0089]

[0090] In the present application, the emulsifier not only ensures the stability of the emulsion so that it does not stratify during long-term storage, but 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 in the anti-wicking component is appropriately controlled at 1-10%, especially when the emulsifier addition is controlled at 2-8%, the wicking height is controlled within 10mm; when the emulsifier addition is controlled at 4-6%, the wicking height is controlled at around 5mm.

[0091] Example 5

[0092] 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.

[0093] Table 6: Effect of different monomers on oiling effect

[0094]

[0095] Combining Example 1 with Table 6, it can be seen that under the same first monomer condition, the wicking height when hydroxyethyl methacrylate is used as the second monomer is lower than the wicking height when hydroxypropyl acrylate is used as the second monomer. This is because hydroxyethyl methacrylate has an additional methyl group as a chain hydrophobic segment that reacts with the hydroxyl group on the fiber to form a chemical bond, which can improve the waterproof performance of the fiber.

[0096] Example 6

[0097] 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.

[0098] Table 7: Effect of different anti-wicking component preparation processes

[0099]

[0100] 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.

[0101] 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.

[0102] Comparative Example 1

[0103] This case uses a common anti-wicking oil agent for oiling. Compared with Example 1, the main differences are as follows:

[0104] Table 8: Performance comparison of functional oils from different sources

[0105]

[0106] Compared with Japan's Daikin's TG-5574 fluorine-containing oil, XF5537C fluorine-free oil and the United States' FT-621 fluorine-free oil, the oil provided in this case not only reaches the same level as imported fluorine-containing oils, but the oil of this application is fluorine-free, uses green, environmentally friendly and easily available substances as raw materials, and is 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 is significantly lower, basically meeting the standard of zero wicking, and the comprehensive effect of spinning condition and wicking is better than that of imported fluorine-free oils.

[0107] Comparative Example 2

[0108] 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.

[0109] Comparative Example 3

[0110] 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.

[0111] 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 235°C and above, and includes the following components: First monomer: octadecyl methacrylate or octadecyl acrylate, 20-50%; Second monomer: hydroxyethyl methacrylate or hydroxypropyl acrylate, 3-15%; 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 23.5-42%, the addition amount of the second monomer is 4-6%, the addition amount of the catalyst is 0.3-0.6%, and the addition amount of the emulsifier is 2-6%, giving the anti-wicking component an upper temperature resistance limit of 240-260°C.

3. An anti-wicking component according to claim 1, Features: The added mass ratio of the first monomer to the second monomer is 5-7:

1.

4. An anti-wicking component according to claim 1, Features: The first monomer and the second monomer are added in proportion and mixed to form an oil phase; an emulsifier and water are added to the oil phase, and magnetic stirring is performed to obtain a crude emulsion; In an ice-water bath, the coarse emulsion is ultrasonically broken into a fine emulsion; the fine emulsion is heated to 70-90°C, a catalyst and water are added, and a polymerization reaction is initiated, and the material is filtered to obtain an anti-wicking component.

5. An anti-wicking component according to claim 4, Features: The ultrasonic power is 300~600W, and the ultrasonic fragmentation time is 10~30min.

6. An anti-wicking component according to claim 4, Features: The filtration fineness is 100~200μm.

7. An anti-wicking component according to claim 1, Features: 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: 25~50%, Smoothing agent: 10~30%, Emulsifier: 2~10%, Antistatic agent: 2~10%, Antimicrobial agent: 1~10%, The balance is water, After adding water to the anti-wicking component, the temperature is raised to 30-45°C. Under stirring, a smoothing agent and an emulsifier are first added, and then an antistatic agent and an antibacterial agent are added. The mixture is stirred until a transparent homogeneous state is obtained and then cooled to room temperature to obtain a functional oil.

8. An 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. An anti-wicking component according to claim 7, Features: The antibacterial agent is methylparaben or butylparaben.

10. An anti-wicking component according to claim 7, Features: The functional oil agent is mixed with the basic spinning oil agent for use, the mass ratio of the base oil agent to the anti-wicking effective components of the functional oil agent is 1:0.8-1.2, and the oil is applied before entering the hot roller.

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