Acrylic resin/SiO2 nano composite tanning agent and preparation method thereof
A technology of acrylic resin and compound tanning agent, applied in small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, animal husbandry, etc., can solve the problem of poor product stability and product application Effects such as unsatisfactory skin tensile strength, etc., achieve the effects of low cost, good strength and elasticity, and simple preparation process
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Embodiment 1
[0023] Take 27 parts by mass of a-methacrylic acid, 3 parts by mass of butyl acrylate, and 0.9 parts of SiO with unsaturated double bonds on the surface 2Nanoparticles, 100 parts of deionized water were mixed, mechanically stirred and mixed evenly, and then the mixed system was dispersed under the action of ultrasonic waves for 10 minutes, the temperature of the mixed system was raised to 40°C, and 0.3 parts by mass of A solution of ammonium persulfate in 10 parts deionized water. After the aqueous solution of the initiator is added dropwise, the temperature of the system is raised to 75°C, and the reaction is kept at this temperature for 4 hours, and the temperature of the system is raised to 95°C in the last 0.5 hour until the reaction is complete. Cool down to room temperature, add 40% NaOH aqueous solution dropwise to the reaction system under stirring to adjust the final pH value of the solution to 5, and control the internal temperature during the whole process to not ex...
Embodiment 2
[0025] Take 24 parts by mass of a-methacrylic acid, 3 parts by mass of butyl acrylate, and 1 part of SiO with unsaturated double bonds on the surface 2 Nanoparticles, 100 parts of deionized water were mixed, mechanically stirred and mixed evenly, and then the mixed system was dispersed under the action of ultrasonic waves for 12 minutes, the temperature of the mixed system was raised to 42 °C, and 0.6 parts by mass of supernatant was slowly added dropwise to the reaction system under stirring. A solution of ammonium sulfate dissolved in 10 parts by mass of deionized water. After the aqueous solution of the initiator is added dropwise, the temperature of the system is raised to 78°C, and the reaction is kept at this temperature for 4.2 hours, and the temperature of the system is raised to 95°C in the last 0.5 hour until the reaction is complete. Cool down to room temperature, add 40% NaOH aqueous solution dropwise to the reaction system under stirring to adjust the final pH of ...
Embodiment 3
[0027] Take 21 parts by mass of a-methacrylic acid, 3 parts by mass of butyl acrylate, and 1.2 parts of SiO with unsaturated double bonds on the surface 2 Nanoparticles, 95 parts of deionized water were mixed, mechanically stirred and mixed evenly, and then the mixed system was dispersed under the action of ultrasonic waves for 14 minutes, the temperature of the mixed system was raised to 44 °C, and 0.9 parts by mass of supernatant was slowly added dropwise to the reaction system under stirring. A solution of ammonium sulfate dissolved in 10 parts by mass of deionized water. After the aqueous solution of the initiator is added dropwise, the temperature of the system is raised to 80°C, and the reaction is kept at this temperature for 4.5 hours, and the temperature of the system is raised to 95°C in the last 0.5 hour until the reaction is complete. Cool down to room temperature, add 40% NaOH aqueous solution dropwise to the reaction system under stirring to adjust the final pH v...
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