A method for improving the corrosion resistance of polyvinyl alcohol water-based coatings by heating and secondary curing
A polyvinyl alcohol water-based, secondary curing technology, used in anti-corrosion coatings, devices for coating liquid on surfaces, coatings, etc., can solve the problems of weakened corrosion resistance, poor compatibility, weak performance, etc., to prevent penetration. Erosion, firm coating, densification effect
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Embodiment 1
[0038] A method for increasing the temperature and secondary curing to improve the corrosion resistance of polyvinyl alcohol water-based coatings, comprising the steps of:
[0039] Step 1, dissolving the base:
[0040] Add 100 g of polyvinyl alcohol with an alcoholysis degree of 98% to 20,000 g of deionized water, place it in a flask, and add a polytetrafluoroethylene rotor, and stir continuously for 24 hours in a collector type constant temperature heating magnetic stirrer from room temperature to 95 ° C, until The polyvinyl alcohol is fully dissolved, then slowly cooled to room temperature, and finally filtered with a 400-mesh filter to remove impurities in the solution to obtain a pure polyvinyl alcohol solution;
[0041] Step 2, mix the filling:
[0042] Weigh 3g graphene, 1g phosphorus powder, 0.01g SiO 2 , 0.1gSiC, mixed evenly to make a mixed filler; the size of graphene is 900-2000nm, the particle size of phosphorus powder is 0.1-0.5nm, SiO 2 The particle size of Si...
Embodiment 2
[0057] A method for increasing the temperature and secondary curing to improve the corrosion resistance of polyvinyl alcohol water-based coatings, comprising the steps of:
[0058] Step 1, dissolving the base:
[0059] Add 100 g of polyvinyl alcohol with a degree of alcoholysis of 98% to 15000 g of deionized water, place it in a flask, and add a polytetrafluoroethylene rotor, and stir continuously for 24 hours in a collector type constant temperature heating magnetic stirrer from room temperature to 95 ° C, until The polyvinyl alcohol is fully dissolved, then slowly cooled to room temperature, and finally filtered with a 400-mesh filter to remove impurities in the solution to obtain a pure polyvinyl alcohol solution;
[0060] Step 2, mix the filling:
[0061] Weigh 7g graphene, 5g phosphorus powder, 0.5g SiO 2 , 5g SiC, mixed evenly to make a mixed filler; the size of graphene is 900-2000nm, the particle size of phosphorus powder is 0.1-0.5nm, SiO 2 The particle size of SiC...
Embodiment 3
[0076] A method for increasing the temperature and secondary curing to improve the corrosion resistance of polyvinyl alcohol water-based coatings, comprising the steps of:
[0077] Step 1, dissolving the base:
[0078] Add 100 g of polyvinyl alcohol with a degree of alcoholysis of 98% to 10000 g of deionized water, place it in a flask, and add a polytetrafluoroethylene rotor, and stir continuously for 24 hours at room temperature to 95 ° C in a collector type constant temperature heating magnetic stirrer, until The polyvinyl alcohol is fully dissolved, then slowly cooled to room temperature, and finally filtered with a 400-mesh filter to remove impurities in the solution to obtain a pure polyvinyl alcohol solution;
[0079] Step 2, mix the filling:
[0080] Weigh 5g graphene, 3g phosphorus powder, 0.2g SiO 2 , 0.5g SiC, mixed evenly to make a mixed filler; the size of graphene is 900-2000nm, the particle size of phosphor powder is 0.1-0.5nm, SiO 2 The particle size of SiC i...
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