Surface treatment method and object obtained by using same
A surface treatment and object technology, applied in the direction of physical treatment of paper, fiber raw material treatment, flexible coverings, etc., can solve the problems of narrow application range, high cost, unfavorable smearing, etc., to achieve easy operation, reduce oil-proof cost, save energy The effect of usage
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preparation example Construction
[0085] The preparation method of the fluorine-free treatment agent of the present invention is not particularly limited, and can be prepared by sequentially adding the aforesaid acrylate copolymer or its mixture, rheology modifier and other additives into an aqueous liquid medium and mixing them in a common manner.
[0086]
[0087] The invention provides a surface treatment method, the method comprising:
[0088] Step A: spraying the aforementioned fluorine-free treatment agent of the present invention onto the surface of the substrate;
[0089] Process B: drying the substrate treated in process A.
[0090] In some specific embodiments of the present invention, one spraying and one drying method is adopted. In other specific embodiments of the present invention, two or more times of spraying and two or more times of drying can also be used, that is, two or more cycles of the method described in the present invention can be used. Repeating the method described in the prese...
manufacture example 1
[0102]In a 1L reactor, mix 4 / 5 of the total amount of water, OP-10, sodium lauryl sulfate, ammonium persulfate and all monomers (acrylic acid, methyl acrylate, methyl methacrylate and butyl methacrylate ) into the container, the monomer mass ratio of acrylic acid, methyl acrylate, methyl methacrylate and butyl methacrylate is 4:2:1:3 (see Table 1 for the specific ratio), and emulsify with rapid stirring at room temperature 30min; then put 1 / 3 of the pre-emulsion and 1 / 5 of the water into the reactor and stir; raise the temperature to the polymerization temperature of 60°C, react for 0.5-1h, then drop the remaining pre-emulsion and chain transfer agent lauryl mercaptan , dripping is completed within 3 hours; heat preservation reaction until the conversion rate > 98%, lower the temperature, adjust the pH value, and discharge. After testing, the prepared acrylate copolymer 1 has a glass transition temperature of -15°C and a weight average molecular weight of about 300,000 (measur...
Embodiment 1-3 and comparative example 1-5
[0125] The acrylate copolymer and rheology modifier obtained in Production Example 1 were sequentially added to water, and the parts by weight described in Table 1 were formulated as a fluorine-free treatment agent, ammonia water was added to adjust the pH to 8.5, and the viscosity was tested.
[0126] The obtained fluorine-free treatment agent was sprayed with an Iwata spray gun in an amount of 0.01g / cm 2 Spray on the surface of the base paper, the spraying air pressure of the spray gun is 0.2-0.3MPa, and the spraying distance is 100-300mm; after spraying, dry it at 80°C for 20 minutes to get fluorine-free oil-proof paper.
[0127] The stability and sprayability of the fluorine-free treatment agent were evaluated, and the oil and water resistance of the fluorine-free oil-proof paper were evaluated. The results are shown in Table 2.
[0128] The test formula is shown in Table 1:
[0129] Formulation of table 1 fluoride-free treatment agent
[0130] ingredient name ...
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Abstract
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