Water turbine blade modified epoxy resin multi-coating anti-corrosion anti-abrasion method
An epoxy resin and multi-coating technology, which is applied in the field of materials, can solve the problems of water turbine impeller material damage, etc., and achieve the effects of improved cavitation resistance, tight combination, and improved bond strength
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Embodiment 1
[0031] A method for preventing corrosion and abrasion of water turbine blades, comprising:
[0032] (1) Carry out sandblasting roughening on blade surface;
[0033] (2) cleaning the roughened blade surface with acetone and ethanol and drying;
[0034] (3) according to the proportioning of hard graphene fiber 2wt% and hydroxyl-terminated liquid rubber-modified epoxy resin surplus, make slurry and mix homogeneously;
[0035] (4) the slurry is uniformly applied on the surface of the blade, and dried at 90° C. to obtain a wear-resistant and corrosion-resistant coating of hydroxyl-terminated liquid rubber-modified epoxy resin doped with graphene fibers cladding on the surface of the blade;
[0036] (5) According to the hard WC ceramic particles accounted for 20wt%, Si 3 N 4 The proportioning of 15wt% of nanoparticles, 2wt% of high-density polyethylene fiber and the remainder of hydroxyl-terminated liquid rubber-modified epoxy resin is made into slurry and mixed uniformly;
[00...
Embodiment 2
[0039] A method for preventing corrosion and abrasion of water turbine blades, comprising:
[0040] (1) Carry out sandblasting roughening on blade surface;
[0041] (2) cleaning the roughened blade surface with acetone and ethanol and drying;
[0042] (3) according to the proportioning of hard graphene fiber 10wt% and hydroxyl-terminated liquid rubber modified epoxy resin surplus, make slurry and mix homogeneously;
[0043] (4) Apply the slurry evenly on the surface of the blade and dry at 130° C. to obtain a wear-resistant and corrosion-resistant coating of hydroxyl-terminated liquid rubber-modified epoxy resin doped with graphene fibers cladding on the surface of the blade;
[0044] (5) According to the hard WC ceramic particles accounted for 65wt%, Si 3 N 4 The proportioning of 5wt% of nanoparticles, 10wt% of high-density polyethylene fiber and the remainder of hydroxyl-terminated liquid rubber-modified epoxy resin is made into slurry and mixed uniformly;
[0045] (6) A...
Embodiment 3
[0047] A method for preventing corrosion and abrasion of water turbine blades, comprising:
[0048] (1) Carry out sandblasting roughening on blade surface;
[0049] (2) cleaning the roughened blade surface with acetone and ethanol and drying;
[0050] (3) according to the proportioning of hard graphene fiber 5wt% and hydroxyl-terminated liquid rubber modified epoxy resin surplus, make slurry and mix homogeneously;
[0051] (4) Apply the slurry evenly on the surface of the blade and dry at 100° C. to obtain a wear-resistant and corrosion-resistant coating of hydroxyl-terminated liquid rubber-modified epoxy resin doped with graphene fibers cladding on the surface of the blade;
[0052] (5) According to the hard WC ceramic particles accounted for 50wt%, Si 3 N 4 The proportioning of 10wt% of nanoparticles, 5wt% of high-density polyethylene fiber and the remainder of hydroxyl-terminated liquid rubber-modified epoxy resin is made into slurry and mixed uniformly;
[0053] (6) Appl...
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