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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

Inactive Publication Date: 2017-05-31
WUXI MINGSHENG TEXTILE MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the hydropower stations in Central South and East China, although the water turbine components suffer from little sand wear and loss due to the low sand content of the river, the cavitation phenomenon of water flow can seriously damage the material of the water turbine impeller in deep water.

Method used

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  • Water turbine blade modified epoxy resin multi-coating anti-corrosion anti-abrasion method

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a water turbine blade modified epoxy resin anti-corrosion anti-abrasion method, which comprises the following steps of (1) performing sand-blasting roughening on the surface of a blade; (2) cleaning and roughening the surface of the blade by acetone and ethyl alcohol; performing drying; (3) preparing the materials into slurry according to the proportion ratio of 2 to 10 weight percent of hard graphene fiber and the balance hydroxy-terminated liquid rubber modified epoxy resin; uniformly mixing the materials; (4) uniformly smearing the slurry onto the surface of the blade; obtaining a graphene fiber doping hydroxy-terminated liquid rubber modified epoxy resin wear-resistant and anti-corrosion coating molten covering on the blade surface; (5) preparing the materials into slurry according to the proportioning ratio of hard WC ceramic particles, Si3N4 nanometer particles, high-density polyethylene and hydroxy-terminated liquid rubber modified epoxy resin; uniformly mixing the raw materials; (6) uniformly smearing the slurry onto the surface of the graphene fiber doping hydroxy-terminated liquid rubber modified epoxy resin wear-resistant and anti-corrosion coating to obtain the multi-coating anti-corrosion layer. Through the trail use for one month in sand river, no obvious ablation and corrosion marks are found.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a multi-coating anti-corrosion and anti-abrasion method of water turbine blade modified epoxy resin. Background technique [0002] Wear and tear is common in many industries such as water conservancy, hydropower, machinery, textile and metallurgy, and it is very serious, and the economic loss caused thereby is quite visible. my country's expenditure in this area is very large, especially in the water conservancy and hydropower sectors. This is because my country's rivers have a high sediment content, and there are 115 rivers that transport more than 10 million tons of sand each year, ranking first in the world. Relevant statistical data in 2001 showed that the total installed capacity of hydropower stations nationwide was 80.05GW, and the total power generation was 218.45 billion kW / h, of which 105.6 billion kW h was located in areas with high sediment concentration in rivers ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08C09D163/00C09D123/06C09D7/12
CPCC09D5/08C08K7/06C08K2201/011C08L2205/04C08L2205/16C08L2207/062C09D7/61C09D7/65C09D7/70C09D163/00C08L23/06C08K3/14C08K3/34
Inventor 张达明
Owner WUXI MINGSHENG TEXTILE MACHINERY
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