Non-woven fabric for manufacturing dust-free wiping paper and preparation method of non-woven fabric

Abstract

The invention relates to the technical field of wiping paper, in particular to non-woven fabric for manufacturing dust-free wiping paper and a preparation method of the non-woven fabric. The non-woven fabric for manufacturing the dust-free wiping paper comprises a non-woven fabric containing cellulosic fibers, needle wood fibers and polyester fibers and a chemical adhesive layer on the surface of the non-woven fabric, the chemical adhesive layer is prepared by soaking the non-woven fabric in a chemical adhesive solution and then drying the non-woven fabric, and the chemical adhesive solution comprises the following components in parts by mass: 1-10 parts of cellulose fibers, 1-10 parts of needle wood fibers and 1-10 parts of polyester fibers. The invention relates to a water-based composite fiber, which is prepared from the following raw materials in parts by mass: 68 to 72 parts of hydrophilic monomer, 0.4 to 0.6 part of polyvinyl alcohol, 9 to 11 parts of strong polar monomer, 97 to 103 parts of polyoctylene copolymer emulsion, 1 to 1.5 parts of surfactant, 3 to 5 parts of allyl polyoxyethylene ether, 2.4 to 2.6 parts of initiator aqueous solution and 395 to 400 parts of deionized water, wherein the mass part ratio of cellulosic fiber to needle wood fiber to polyester fiber is 4 to 5 to 1. According to the non-woven fabric for manufacturing the dust-free wiping paper and the preparation method of the non-woven fabric, through a unique chemical adhesive liquid formula and a simple production process, the production process with high cleanliness, excellent softness, good water and oil absorption and low cost is achieved, and the requirements of industrial and civil markets for high-quality dust-free wiping paper are met.

Description

Technical Field

[0001] The present application relates to the technical field of wiping paper, and in particular to a non-woven fabric for manufacturing dust-free wiping paper and a preparation method thereof. Background Art

[0002] Non-woven fabric is a kind of non-woven fabric. It is a non-woven fabric formed by directly using polymer slices, short fibers or filaments to form a net through airflow or machinery, and then reinforced by water spunlace, needle punching or hot rolling, and finally after finishing. Non-woven fabric is a new type of fiber product with soft, breathable and flat structure. Because it is environmentally friendly and easy to degrade, it is widely used, and its main use is as wiping paper. The materials of non-woven fabrics include polyester, polypropylene, nylon, spandex, and acrylic. Most of these materials have poor hydrophilic properties. Wiping paper is usually made of non-woven fabrics made of cellulose staple fibers and polyester staple fibers spunlace to improve its hydrophilicity and water absorption properties. Although the use of cellulose staple fibers in non-woven fabrics has greatly improved its hydrophilicity, the amount of dust generated is greatly increased. Wiping paper made of this non-woven fabric is easy to drop dust and contaminate the wiped items during the wiping process, and is not suitable for clean room environments.

[0003] Dust-free wiping paper is a non-woven fabric used for wiping operations in clean rooms. It must have the characteristics of fast water absorption, no fiber shedding, no harmful heavy metals and organic matter, and low solvent dissolution. At present, there are three common non-woven fabrics for making dust-free wiping paper. The first is a non-woven fabric made of different proportions of cellulose staple fibers and polyester staple fibers prepared by the jet spunlace method. Although the non-woven fabric has good water absorption performance, the staple fibers are easy to fall off during the wiping process, causing pollution to the wiping surface. The second is a non-woven fabric made of chemical fiber filaments, such as PP meltblown fabrics, PP or PET spunbond fabrics. Although the long fibers of the non-woven fabric are not easy to fall off, the water absorption performance is poor due to the hydrophobic surface of the chemical fiber. The third is a cellulose long fiber non-woven fabric. The cellulose long fibers are not easy to fall off and have excellent water absorption performance, but the strength of the cellulose long fibers is smaller than that of general chemical fibers, and the bonding force between the long fibers is weak. During the wiping process, the cellulose long fibers are easily hooked and broken, and the wear resistance is poor. The above three non-woven fabrics used to make dust-free wiping papers do not have anti-static function. The fiber surface resistance is too large, and static electricity is easily generated during use. They are not suitable for use in the processing of electronic products that are sensitive to static electricity. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present application provides a non-woven fabric for manufacturing dust-free wiping paper and a preparation method thereof. The non-woven fabric for manufacturing dust-free wiping paper of the present application has high cleanliness, good softness, is not easy to shed hair and powder, has high water and oil absorption and excellent ability to clean the surface of objects. At the same time, the preparation method of the present application is simple and easy to operate, low in cost, and suitable for large-scale production.

[0005] In the first aspect, the present application provides a non-woven fabric for manufacturing dust-free wiping paper, adopting the following technical scheme: a non-woven fabric for manufacturing dust-free wiping paper, comprising a non-woven fabric containing cellulose fibers, needlewood fibers and polyester fibers and a chemical adhesive layer on the surface of the non-woven fabric, wherein the chemical adhesive layer is obtained by immersing the non-woven fabric in a chemical adhesive liquid and then drying it, wherein the chemical adhesive liquid, calculated by weight, comprises raw materials for preparing the following: 68-72 parts of a hydrophilic monomer, 0.4-0.6 parts of polyvinyl alcohol, 9-11 parts of a strong polar monomer, 97-103 parts of a polyoctene copolymer emulsion, 1-1.5 parts of a surfactant, 3-5 parts of allyl polyoxyethylene ether, 2.4-2.6 parts of an initiator aqueous solution, and 395-400 parts of deionized water, wherein the mass ratio of the cellulose fibers, needlewood fibers and polyester fibers is 4:5:1.

[0006] By adopting the above technical solutions, each component works closely together to create a high-quality product with high cleanliness, good softness, firmness and no linting and powdering. Cellulose fiber, needlewood fiber and polyester fiber: These three fibers are mixed in a mass ratio of 4:5:1 to form the basic structure of the non-woven fabric. Cellulose fiber provides good water and oil absorption, needlewood fiber increases the softness and elasticity of the non-woven fabric, and polyester fiber enhances the overall durability and toughness. This mixed fiber not only ensures the high strength and durability of the non-woven fabric, but also gives it excellent cleaning ability. Chemical adhesive layer: Through the impregnation and drying process, the chemical adhesive liquid forms a uniform adhesive layer on the surface of the non-woven fabric. This layer not only further enhances the structural stability of the non-woven fabric, but also significantly improves its bonding strength with the non-woven fabric, reduces the risk of linting and powdering during use, and thus improves cleanliness. Strong polar monomer: Monomers containing strong polar groups such as amino and amide groups form ionic bonds and hydrogen bonds with oxygen-containing groups on the surface of the non-woven fabric, which significantly improves the bonding strength between the chemical adhesive layer and the non-woven fabric. This strong chemical bond ensures the wear resistance and stability of the non-woven fabric during the wiping process. Polyoctene copolymer emulsion: This long-chain polymer emulsion provides additional adhesion and flexibility to the non-woven fabric. Its long-chain structure allows the non-woven fabric to maintain sufficient strength while also having good softness, reducing the phenomenon of hair loss and powder loss during use, and further improving the cleanliness. Surfactant: With good wetting, penetration, emulsification and other properties, the surfactant improves the fluidity of the chemical adhesive liquid, making it easier to penetrate into the non-woven fabric to form a mesh structure. This structure not only enhances the overall performance of the non-woven fabric, but also improves its ability to absorb liquids and oils. Allyl polyoxyethylene ether: As a flexible additive, allyl polyoxyethylene ether improves the softness of the chemical adhesive layer, making the non-woven fabric smoother when wiping, reducing damage to the wiped surface, and providing a better user experience. Hydrophilic monomers and polyvinyl alcohol: These components improve the water absorption of the non-woven fabric, allowing the dust-free wipe paper to absorb water and oil more effectively. The hydrophilic monomer ensures that the water is absorbed quickly, while the polyvinyl alcohol helps to form a stable water-absorbing network structure. Initiator aqueous solution and deionized water: The initiator aqueous solution plays a key role in the polymerization reaction, promoting the cross-linking reaction of each monomer and forming a stable chemical structure. Deionized water is used as a solvent to ensure the smooth progress of the chemical reaction, while avoiding the introduction of impurities and ensuring the cleanliness of the product. In summary, the various components in this application are carefully designed and proportioned, and work synergistically to create a non-woven fabric for dust-free wiping paper with high cleanliness, good softness, firmness and excellent cleaning ability. This product not only meets the high requirements of a dust-free environment, but also because of its simple preparation method and low cost, it is suitable for large-scale production and has broad application prospects.

[0007] Preferably, the hydrophilic monomer is selected from at least one of acrylic acid and methacrylic acid.

[0008] Preferably, the highly polar monomers are composed of acrylamide monomers and dimethylaminoethyl acrylate monomers in a mass ratio of 1:1.

[0009] By adopting the above technical scheme, in the manufacture of non-woven fabrics for dust-free wiping paper, the combination of strongly polar monomers selected acrylamide monomers and dimethylaminoethyl acrylate monomers in a mass ratio of 1:1. This specific ratio and selection give the non-woven fabric a significant advantage in performance. Acrylamide monomers: contain strongly polar amide groups, which can form hydrogen bonds with oxygen-containing groups on the surface of the non-woven fabric, thereby providing excellent adhesion. This strong chemical bond ensures the durability and stability of the non-woven fabric during mechanical wiping and reduces the shedding of fibers. Dimethylaminoethyl acrylate monomers: introduce additional polar groups, such as tertiary amino groups, which can also interact with the surface of the non-woven fabric, further enhancing the overall bonding force between the binder and the non-woven fabric. In summary, acrylamide monomers and dimethylaminoethyl acrylate monomers are mixed in a mass ratio of 1:1, which plays a vital role in the manufacture of non-woven fabrics for dust-free wiping paper. The strong polar groups (amino group, amide group) in the strong polar monomers have ionic bonds, hydrogen bonds and other forces with the oxygen-containing groups on the surface of the non-woven fabric, which significantly improves the bonding strength with the non-woven fabric and significantly reduces the shedding of the non-woven fabric during the wiping process, thereby improving the cleanliness.

[0010] Preferably, the acrylamide monomer is selected from at least one of acrylamide and methacrylamide; and the dimethylaminoethyl acrylate monomer is selected from at least one of dimethylaminoethyl acrylate and dimethylaminoethyl methacrylate.

[0011] Preferably, the preparation method of the polyoctene copolymer emulsion is as follows: 400 parts of deionized water and 0.5 parts of emulsifier are added to a glass reactor according to their weight fractions, high-purity nitrogen is introduced, and the mixture is stirred at a stirring speed of 300-350 rpm for 1-1.5 hours, and then 15 parts of 1-octene are added, and the mixture is stirred at a stirring speed of 300-350 rpm for 0.8-1 hours, the mixture is heated to 61-65° C. and kept at a constant temperature, and then 1 part of an initiator aqueous solution with a mass concentration of 10% is added and reacted at 61-63° C. for 2-2.5 hours, and then 70 parts of 1-octene, 15 parts of perfluoromethyl vinyl ether, and 4 parts of an initiator aqueous solution with a mass concentration of 10% are respectively added dropwise to the reactor through a peristaltic pump, the addition time is 3-3.5 hours, the mixture is reacted at 61-63° C. for 5-6 hours, the reaction is cooled to room temperature after the reaction is completed, and the mixture is filtered through a 150-mesh screen to obtain the polyoctene copolymer emulsion.

[0012] By adopting the above technical scheme, the prepared long-chain polyoctene copolymer emulsion can provide good bonding performance and ensure the close combination of the chemical adhesive layer and the non-woven fabric. Its long-chain structure provides sufficient flexibility, so that the non-woven fabric used to manufacture dust-free wiping paper has excellent softness, significantly reducing the hair and powder loss of the non-woven fabric during the wiping process, thereby improving the cleanliness. The preparation method of the polyoctene copolymer emulsion is simple and easy, low-cost, and suitable for large-scale production. This reduces the production cost of dust-free wiping paper and is conducive to promotion and application. In summary, the polyoctene copolymer emulsion has multiple effects and synergistic effects in the manufacture of non-woven fabrics for dust-free wiping paper, such as enhancing bonding performance, improving the softness of the chemical adhesive layer, and improving the comprehensive performance of the non-woven fabric, which helps to improve the quality and performance of dust-free wiping paper.

[0013] Preferably, the initiator is ammonium persulfate, and the emulsifier is sodium dodecyl sulfate.

[0014] Preferably, the surfactant is composed of fatty alcohol polyoxyethylene ether, polyvinyl pyrrolidone K30 and dodecyl bis(hydroxyethyl)methyl ammonium chloride in a mass ratio of 4:4:5.

[0015] By adopting the above technical scheme, the surfactant has good wetting, penetration, emulsification and other properties, can improve the fluidity of the chemical adhesive liquid, penetrate it into the non-woven fabric, form a mesh structure, and thus significantly improve the comprehensive performance of the non-woven fabric. Fatty alcohol polyoxyethylene ether, as a non-ionic surfactant, can reduce the surface tension of the liquid, improve the fluidity and permeability of the chemical adhesive liquid, and make it easier for the adhesive to evenly penetrate into the internal structure of the non-woven fabric. Polyvinyl pyrrolidone K30 has good solubility and stable emulsification, can maintain the uniform dispersion of the components in the chemical adhesive liquid, prevent stratification and precipitation, and ensure the stability of the adhesive liquid. Dodecyl bis(hydroxyethyl)methyl ammonium chloride is a cationic surfactant with good wettability, cleaning ability and antistatic properties, which can improve the cleaning effect of dust-free wiping paper on the surface of objects. The compound use of these three surfactants can exert their synergistic effect. Fatty alcohol polyoxyethylene ether provides fluidity and permeability, polyvinyl pyrrolidone K30 maintains emulsification stability, and dodecyl bis(hydroxyethyl)methyl ammonium chloride provides additional wettability, cleaning ability and antistatic properties. This synergistic effect makes the chemical adhesive liquid more efficient in treating non-woven fabrics, and the chemical adhesive liquid penetrates into the interior of the non-woven fabric to form a mesh structure, thereby significantly improving the comprehensive performance of the non-woven fabric, especially in improving cleanliness and reducing linting and powder loss. In summary, the use of this specific ratio of mixed surfactants not only improves the performance of the chemical adhesive liquid, but also optimizes the manufacturing process of dust-free wipes and the quality of the final product.

[0016] Preferably, the polyvinyl alcohol is PVA 1799.

[0017] Preferably, the mass concentration of the initiator aqueous solution is 15%, and the initiator is ammonium persulfate.

[0018] In a second aspect, the present application provides a method for preparing a non-woven fabric for manufacturing dust-free wiping paper, using the following technical solution: As a general technical concept, the present application also provides a method for preparing the above-mentioned non-woven fabric for manufacturing dust-free wiping paper, comprising the following steps: S101, add deionized water and polyvinyl alcohol in a glass reactor according to mass fractions, introduce high-purity nitrogen, stir at a stirring speed of 300-350rpm for 1-1.2h, then add hydrophilic monomer, strong polar monomer, polyoctene copolymer latex, liquid allyl polyoxyethylene ether and surfactant in sequence, raise the temperature to 61-63°C and keep the temperature constant; then add an initiator aqueous solution to initiate the reaction, stop heating after reacting for 8-9h, cool to room temperature, and obtain a chemical adhesive liquid; S102, using a chemical adhesive liquid to perform padding treatment on a non-woven fabric containing cellulose fibers, needlewood fibers and polyester fibers, with a padding rate of 160%; S103, baking the non-woven fabric treated in step S102 at 150-160° C. for 90-120 seconds to obtain a non-woven fabric for manufacturing dust-free wiping paper.

[0019] In summary, the present application includes at least one of the following beneficial technical effects: 1. High cleanliness and low linting and powdering: By using a specific chemical adhesive liquid formula, including strong polar monomers and polyoctene copolymer emulsion, the bonding strength between the non-woven surface of the dust-free wiping paper and the chemical adhesive layer is significantly improved. The polar groups in the strong polar monomers form ionic bonds and hydrogen bonds with the oxygen-containing groups on the surface of the non-woven fabric, which enhances the adhesion, thereby significantly reducing linting and powdering during the wiping process and improving the cleanliness of the product.

[0020] 2. Excellent softness and water and oil absorption: The addition of allyl polyoxyethylene ether improves the softness of the chemical adhesive layer, making the dust-free wiping paper more comfortable during use, while maintaining good water and oil absorption, improving cleaning efficiency.

[0021] 3. Improvement of comprehensive performance: The use of surfactants not only improves the fluidity and permeability of the chemical adhesive liquid, but also helps to form a network structure and enhance the internal bonding force of the non-woven fabric, thereby improving the comprehensive performance of the non-woven fabric, including durability and cleaning ability.

[0022] 4. Simple and easy preparation method: The preparation method provided in the present application is simple and easy to implement, does not require complicated processes or expensive equipment, and is suitable for large-scale production. The simplicity of this method reduces production costs, making the production of dust-free wiping paper more economical and efficient.

[0023] 5. Low cost and suitable for large-scale production: By optimizing the formula and production process, the manufacturing method of the present application achieves cost control while ensuring product quality, making the product competitive in the market.

[0024] 6. Environmentally friendly: The use of deionized water and renewable resources such as cellulose fiber, needlewood fiber, etc. reduces the impact on the environment and meets the requirements of sustainable development.

[0025] 7. Synergistic effect: The synergistic effect of components such as polyoctene copolymer emulsion, surfactants and strong polar monomers jointly improves the performance of dust-free wiping paper, so that it has good physical properties and service life while maintaining excellent cleaning effect. DETAILED DESCRIPTION

[0026] The embodiments of the present application will be described in detail below in conjunction with the examples, but it will be appreciated by those skilled in the art that the following examples are only used to illustrate the present application and should not be considered as limiting the scope of the present application. In the examples, if specific conditions are not specified, they are carried out according to normal conditions or the conditions recommended by the manufacturer. If the manufacturer is not specified for the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0027] In the following Examples, Preparation Examples and Comparative Examples, 1 part means 10 g.

[0028] Preparation Example 1 Preparation of polyoctene copolymer emulsion The preparation method of the polyoctene copolymer emulsion is as follows: 400 parts of deionized water and 0.5 parts of sodium dodecyl sulfate are added to a glass reactor according to their weight fractions, high-purity nitrogen is introduced, and the mixture is stirred at a stirring speed of 330 rpm for 1.3 hours, and then 15 parts of 1-octene are added, and the mixture is stirred at a stirring speed of 330 rpm for 1 hour, the temperature is raised to 63° C. and kept constant, and then 1 part of an aqueous solution of ammonium persulfate with a mass concentration of 10% is added and reacted at 62° C. for 2.3 hours, and then 70 parts of 1-octene, 15 parts of perfluoromethyl vinyl ether, and 4 parts of an aqueous solution of ammonium persulfate with a mass concentration of 10% are respectively added dropwise to the reactor through a peristaltic pump, the dropping time is 3.4 hours, the mixture is reacted at 62° C. for 5.6 hours, the temperature is lowered to room temperature after the reaction is completed, and the mixture is filtered through a 150-mesh sieve to obtain the polyoctene copolymer emulsion.

[0029] Example 1 A non-woven fabric for making dust-free wiping paper, comprising a non-woven fabric containing cellulose fibers, needlewood fibers and polyester fibers and a chemical adhesive layer on the surface of the non-woven fabric, wherein the chemical adhesive layer is prepared by dipping the non-woven fabric in a chemical adhesive solution and then drying it, wherein the chemical adhesive solution, in terms of mass fraction, comprises: 68 parts of a hydrophilic monomer, polyvinyl alcohol (PVA) 1799) 0.4 parts, strong polar monomers 9 parts, polyoctene copolymer emulsion 97 parts, surfactants 1 parts, allyl polyoxyethylene ether 3 parts, ammonium persulfate solution with a mass concentration of 15% 2.4 parts, deionized water 395 parts, wherein the mass ratio of the cellulose fiber, the needlewood fiber and the polyester fiber is 4:5:1, the hydrophilic monomer is acrylic acid, the strong polar monomer is composed of acrylamide monomers and dimethylaminoethyl acrylate monomers in a mass ratio of 1:1, wherein the acrylamide monomer is acrylamide, the dimethylaminoethyl acrylate monomer is dimethylaminoethyl acrylate, and the surfactant is composed of fatty alcohol polyoxyethylene ether, polyvinyl pyrrolidone K30 and dodecyl bis(hydroxyethyl)methyl ammonium chloride in a mass ratio of 4:4:5.

[0030] The above-mentioned method for preparing a non-woven fabric for making dust-free wiping paper comprises the following steps: S101. Add deionized water and polyvinyl alcohol in a glass reactor according to their mass fractions, introduce high-purity nitrogen, stir at a stirring speed of 300 rpm for 1.2 h, then add hydrophilic monomer, strong polar monomer, polyoctene copolymer latex, liquid allyl polyoxyethylene ether and surfactant in sequence, raise the temperature to 61° C. and keep the temperature constant; then add 15% ammonium persulfate aqueous solution to initiate the reaction, stop heating after reacting for 9 h, cool to room temperature, and obtain a chemical adhesive liquid; S102, using a chemical adhesive liquid to perform padding treatment on a non-woven fabric containing cellulose fibers, needlewood fibers and polyester fibers, with a padding rate of 160%; S103, baking the non-woven fabric treated in step S102 at 150° C. for 120 seconds to obtain a non-woven fabric for manufacturing dust-free wiping paper.

[0031] Example 2 A non-woven fabric for making dust-free wiping paper, comprising a non-woven fabric containing cellulose fibers, needlewood fibers and polyester fibers and a chemical adhesive layer on the surface of the non-woven fabric, wherein the chemical adhesive layer is prepared by immersing the non-woven fabric in a chemical adhesive solution and then drying it, wherein the chemical adhesive solution, in terms of mass parts, comprises: 72 parts of a hydrophilic monomer, 0.6 parts of polyvinyl alcohol (PVA1799), 11 parts of a strongly polar monomer, 103 parts of a polyoctene copolymer emulsion, 1.5 parts of a surfactant, 5 parts of allyl polyoxyethylene ether, 2.6 parts of a 15% ammonium persulfate solution, and 0.6 parts of a 15% ammonium persulfate solution. parts, 400 parts of deionized water, wherein the mass ratio of the cellulose fiber, the needlewood fiber and the polyester fiber is 4:5:1, the hydrophilic monomer is methacrylic acid, the strong polar monomer is composed of acrylamide monomers and dimethylaminoethyl acrylate monomers in a mass ratio of 1:1, wherein the acrylamide monomers are acrylamide and; the dimethylaminoethyl acrylate monomer is dimethylaminoethyl methacrylate, and the surfactant is composed of fatty alcohol polyoxyethylene ether, polyvinyl pyrrolidone K30 and dodecyl bis(hydroxyethyl)methylammonium chloride in a mass ratio of 4:4:5.

[0032] The above-mentioned method for preparing a non-woven fabric for making dust-free wiping paper comprises the following steps: S101. Add deionized water and polyvinyl alcohol in a glass reactor according to their mass fractions, introduce high-purity nitrogen, stir at a stirring speed of 350 rpm for 1 hour, then add hydrophilic monomer, strong polar monomer, polyoctene copolymer latex, liquid allyl polyoxyethylene ether and surfactant in sequence, raise the temperature to 63° C. and keep the temperature constant; then add a 15% mass concentration of ammonium persulfate aqueous solution to initiate the reaction, stop heating after reacting for 8 hours, cool to room temperature, and obtain a chemical adhesive liquid; S102, using a chemical adhesive liquid to perform padding treatment on a non-woven fabric containing cellulose fibers, needlewood fibers and polyester fibers, with a padding rate of 160%; S103, baking the non-woven fabric treated in step S102 at 160° C. for 90 seconds to obtain a non-woven fabric for manufacturing dust-free wiping paper.

[0033] Example 3 A non-woven fabric for making dust-free wiping paper, comprising a non-woven fabric containing cellulose fibers, needlewood fibers and polyester fibers and a chemical adhesive layer on the surface of the non-woven fabric, wherein the chemical adhesive layer is prepared by dipping the non-woven fabric in a chemical adhesive solution and then drying it, wherein the chemical adhesive solution, in terms of mass fraction, comprises: 70 parts of a hydrophilic monomer, polyvinyl alcohol (PVA) 1799), 0.5 parts of a strong polar monomer, 10 parts of a polyoctene copolymer emulsion, 1.3 parts of a surfactant, 4 parts of allyl polyoxyethylene ether, 2.5 parts of an ammonium persulfate solution with a mass concentration of 15%, and 398 parts of deionized water, wherein the mass ratio of the cellulose fiber, the needlewood fiber and the polyester fiber is 4:5:1, the hydrophilic monomer is methacrylic acid, the strong polar monomer is composed of an acrylamide monomer and a dimethylaminoethyl acrylate monomer in a mass ratio of 1:1, wherein the acrylamide monomer is methacrylamide; the dimethylaminoethyl acrylate monomer is dimethylaminoethyl acrylate, and the surfactant is composed of fatty alcohol polyoxyethylene ether, polyvinyl pyrrolidone K30 and dodecyl bis(hydroxyethyl)methyl ammonium chloride in a mass ratio of 4:4:5.

[0034] The above-mentioned method for preparing a non-woven fabric for making dust-free wiping paper comprises the following steps: S101. Add deionized water and polyvinyl alcohol in a glass reactor according to their mass fractions, introduce high-purity nitrogen, stir at a stirring speed of 330 rpm for 1.1 h, then add a hydrophilic monomer, a strong polar monomer, a polyoctene copolymer latex, liquid allyl polyoxyethylene ether and a surfactant in sequence, raise the temperature to 62° C. and keep the temperature constant; then add an aqueous solution of ammonium persulfate having a mass concentration of 15% to initiate the reaction, stop heating after reacting for 8.5 h, cool to room temperature, and obtain a chemical adhesive liquid; S102, using a chemical adhesive liquid to perform padding treatment on a non-woven fabric containing cellulose fibers, needlewood fibers and polyester fibers, with a padding rate of 160%; S103, baking the non-woven fabric treated in step S102 at 155°C for 105 seconds to obtain a non-woven fabric for manufacturing dust-free wiping paper.

[0035] Example 4 A non-woven fabric for making dust-free wiping paper, comprising a non-woven fabric containing cellulose fibers, needlewood fibers and polyester fibers and a chemical adhesive layer on the surface of the non-woven fabric, wherein the chemical adhesive layer is prepared by dipping the non-woven fabric in a chemical adhesive solution and then drying it, wherein the chemical adhesive solution, in terms of mass fraction, comprises: 70 parts of a hydrophilic monomer, polyvinyl alcohol (PVA) 1799), 0.5 parts of a strong polar monomer, 10 parts of a polyoctene copolymer emulsion, 1.3 parts of a surfactant, 4 parts of allyl polyoxyethylene ether, 2.5 parts of an ammonium persulfate solution with a mass concentration of 15%, and 398 parts of deionized water, wherein the mass ratio of the cellulose fiber, the needlewood fiber and the polyester fiber is 4:5:1, the hydrophilic monomer is methacrylic acid, the strong polar monomer is composed of acrylamide monomers and dimethylaminoethyl acrylate monomers in a mass ratio of 1:1, wherein the acrylamide is methacrylamide; the dimethylaminoethyl acrylate monomer is dimethylaminoethyl methacrylate, and the surfactant is composed of fatty alcohol polyoxyethylene ether, polyvinyl pyrrolidone K30 and dodecyl bis(hydroxyethyl)methylammonium chloride in a mass ratio of 4:4:5.

[0036] The above-mentioned method for preparing a non-woven fabric for making dust-free wiping paper comprises the following steps: S101. Add deionized water and polyvinyl alcohol in a glass reactor according to their mass fractions, introduce high-purity nitrogen, stir at a stirring speed of 330 rpm for 1.1 h, then add a hydrophilic monomer, a strong polar monomer, a polyoctene copolymer latex, liquid allyl polyoxyethylene ether and a surfactant in sequence, raise the temperature to 62° C. and keep the temperature constant; then add an aqueous solution of ammonium persulfate having a mass concentration of 15% to initiate the reaction, stop heating after reacting for 8.5 h, cool to room temperature, and obtain a chemical adhesive liquid; S102, using a chemical adhesive liquid to perform padding treatment on a non-woven fabric containing cellulose fibers, needlewood fibers and polyester fibers, with a padding rate of 160%; S103, baking the non-woven fabric treated in step S102 at 155°C for 105 seconds to obtain a non-woven fabric for manufacturing dust-free wiping paper.

[0037] Comparative Example 1 The same as Example 4, except that the amount of the polyoctene copolymer emulsion added is 0 parts.

[0038] Comparative Example 2 The same as Example 4, except that the surfactant is fatty alcohol polyoxyethylene ether.

[0039] Comparative Example 3 The same as Example 4, except that the surfactant is polyvinyl pyrrolidone K30.

[0040] Comparative Example 4 The same as Example 4, except that the surfactant is dodecyl bis(hydroxyethyl)methylammonium chloride.

[0041] Performance testing The nonwoven fabrics for manufacturing dust-free wiping papers prepared in Examples 1 to 4 and Comparative Examples 1 to 4 were sampled and subjected to the following tests. The test results are shown in Table 1.

[0042] Water absorption test: Cut the non-woven fabric into small pieces of 15mm×150mm, take 100 pieces and weigh a, then put them into a dish filled with distilled water at room temperature and soak for 10 minutes, then take them out and weigh b, water absorption = (ba) / a×100%, measure 5 times and take the average value; Total amount of non-volatile organic compounds (NVR): The extraction solvents used include isopropanol and water. The total weight of non-volatile organic compounds extracted from the non-woven fabric per unit area is tested according to IEST-RP-CC004.2sec.6.1.2; Fiber shedding number: The solvent used is water. According to IEST-RP-CC004.2sec.5.2, the number of shedding fibers with a length greater than or equal to 100μm extracted by water per unit area of ​​non-woven fabric through vibration is tested; The softness test method is as follows: select 10 women aged 25-30, twist the dust-free wipe paper with their hands, and score the softness of all samples based on the touch, 1-10 points, the higher the score, the better the softness, and take the average of the 10 people.

[0043] Table 1 Performance test Analyzing the data in Table 1, we can see that: 1) The non-woven fabrics for making dust-free wiping paper prepared in Examples 1 to 4 have high cleanliness, good softness, are not easy to shed hair or powder, have high water and oil absorption and excellent ability to clean the surface of objects. At the same time, the preparation method of the present application is simple and easy to implement, low in cost, and suitable for large-scale production.

[0044] 2) The comparative analysis of the performance of the non-woven fabric for making dust-free wiping paper prepared in Example 4 and Comparative Example 1 shows that the long-chain polyoctene copolymer emulsion prepared in this application can provide good bonding performance, ensuring the close bonding of the chemical adhesive layer and the non-woven fabric. Its long-chain structure provides sufficient flexibility, so that the non-woven fabric for making dust-free wiping paper has excellent softness, significantly reducing the shedding of the non-woven fabric during the wiping process, thereby improving the cleanliness.

[0045] 3) A comparative analysis of the performance of the non-woven fabrics for manufacturing dust-free wiping paper prepared in combination with Example 4 and Comparative Examples 2 to 4 shows that the surfactant is composed of fatty alcohol polyoxyethylene ether, polyvinyl pyrrolidone K30 and dodecyl bis(hydroxyethyl)methylammonium chloride in a mass ratio of 4:4:5. The synergistic effect between them can improve the fluidity of the chemical adhesive liquid, penetrate it into the interior of the non-woven fabric, form a network structure, and thus significantly improve the comprehensive performance of the non-woven fabric.

[0046] The above embodiments are only used to explain the technical solutions of the present application rather than to limit them. Although the above embodiments provide a specific description of the present application, relevant technical personnel should understand that the specific implementation methods of the present application can still be modified or replaced by equivalents, and any modifications and equivalent replacements that do not depart from the spirit and scope of the present application should be included in the protection scope of the present application.

Claims

1. A non-woven fabric for making dust-free wiping paper, It is characterized in that The invention comprises a non-woven fabric containing cellulose fiber, needlewood fiber and polyester fiber and a chemical adhesive layer on the surface of the non-woven fabric, wherein the chemical adhesive layer is prepared by immersing the non-woven fabric in a chemical adhesive solution and then drying the non-woven fabric, wherein the chemical adhesive solution comprises, by weight, 68-72 parts of a hydrophilic monomer, 0.4-0.6 parts of polyvinyl alcohol, 9-11 parts of a strongly polar monomer, 97-103 parts of a polyoctene copolymer emulsion, 1-1.5 parts of a surfactant, 3-5 parts of allyl polyoxyethylene ether, 2.4-2.6 parts of an initiator aqueous solution and 395-400 parts of deionized water, wherein the weight ratio of the cellulose fiber, needlewood fiber and polyester fiber is 4:5:

1.

2. A nonwoven fabric for making dust-free wiping paper according to claim 1, It is characterized in that The hydrophilic monomer is selected from at least one of acrylic acid and methacrylic acid.

3. A nonwoven fabric for making dust-free wiping paper according to claim 1, It is characterized in that The strong polar monomers are composed of acrylamide monomers and dimethylaminoethyl acrylate monomers in a mass ratio of 1:

1.

4. A nonwoven fabric for making dust-free wiping paper according to claim 3, It is characterized in that The acrylamide monomer is selected from at least one of acrylamide and methacrylamide; the dimethylaminoethyl acrylate monomer is selected from at least one of dimethylaminoethyl acrylate and dimethylaminoethyl methacrylate.

5. A nonwoven fabric for making dust-free wiping paper according to claim 1, It is characterized in that The preparation method of the polyoctene copolymer emulsion is as follows: 400 parts of deionized water and 0.5 parts of emulsifier are added into a glass reactor according to their weight fractions, high-purity nitrogen is introduced, and the mixture is stirred at a stirring speed of 300-350 rpm for 1-1.5 hours, and then 15 parts of 1-octene are added, and the mixture is stirred at a stirring speed of 300-350 rpm for 0.8-1 hours, the mixture is heated to 61-65° C. and kept at a constant temperature, and then 1 part of an initiator aqueous solution with a mass concentration of 10% is added, and the mixture is reacted at 61-63° C. for 2-2.5 hours, and then 70 parts of 1-octene, 15 parts of perfluoromethyl vinyl ether, and 4 parts of an initiator aqueous solution with a mass concentration of 10% are respectively added dropwise into the reactor through a peristaltic pump, the addition time is 3-3.5 hours, the mixture is reacted at 61-63° C. for 5-6 hours, the reaction is cooled to room temperature after the reaction is completed, and the mixture is filtered through a 150-mesh screen to obtain the polyoctene copolymer emulsion.

6. A nonwoven fabric for making dust-free wiping paper according to claim 5, It is characterized in that The initiator is ammonium persulfate, and the emulsifier is sodium dodecyl sulfate.

7. A nonwoven fabric for making dust-free wiping paper according to claim 1, It is characterized in that The surfactant is composed of fatty alcohol polyoxyethylene ether, polyvinyl pyrrolidone K30 and dodecyl bishydroxyethyl methyl ammonium chloride in a mass ratio of 4:4:

5.

8. A nonwoven fabric for making dust-free wiping paper according to claim 1, It is characterized in that The polyvinyl alcohol is PVA 1799.

9. A nonwoven fabric for making dust-free wiping paper according to claim 1, It is characterized in that The mass concentration of the initiator aqueous solution is 15%, and the initiator is ammonium persulfate.

10. A method for preparing a non-woven fabric for making dust-free wiping paper according to any one of claims 1 to 9, It is characterized in that The following steps are involved: S101, add deionized water and polyvinyl alcohol in a glass reactor according to mass fractions, introduce high-purity nitrogen, stir at a stirring speed of 300-350rpm for 1-1.2h, then add hydrophilic monomer, strong polar monomer, polyoctene copolymer latex, liquid allyl polyoxyethylene ether and surfactant in sequence, raise the temperature to 61-63°C and keep the temperature constant; then add an initiator aqueous solution to initiate the reaction, stop heating after reacting for 8-9h, cool to room temperature, and obtain a chemical adhesive liquid; S102, using a chemical adhesive liquid to perform padding treatment on a non-woven fabric containing cellulose fibers, needlewood fibers and polyester fibers, with a padding rate of 160%; S103, baking the non-woven fabric treated in step S102 at 150-160° C. for 90-120 seconds to obtain a non-woven fabric for manufacturing dust-free wiping paper.

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