Bionic structure method of anti-sediment erosion coating on water machine flow surface
A construction method and technology of flow surface, which is applied in the field of bionic structure of anti-sediment erosion coating on water machine flow surface, to achieve the effect of smooth surface, low material cost and simple construction process
Inactive Publication Date: 2016-06-29
HUNAN UNIV OF SCI & TECH
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Problems solved by technology
The two types of coatings currently applied have not been designed and constructed according to the above comprehensive performance requirements
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[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0023] see image 3 , the biomimetic polymer anti-erosion coating of the present invention is structured in 5 sub-layers, such as image 3 As shown in part a, 5 represents the metal substrate, 6 represents the bonding bottom layer, 7 represents the first transition layer, 8 represents the elastic layer, 9 represents the second transition layer, 10 represents the epoxy resin rigid surface layer, 11 represents the microcapsule, 12 means corundum; image 3 In part b, the abscissa E represents the modulus of elasticity, and the ordinate represents the cross-section of the coating. Among them, the epoxy resin rigid surface layer and the elastic layer are the main parts of the entire coating, connected by a transition layer, and the total thickness of the coating is 3-4mm.
[0024] Various raw materials and various equipment used in the present i...
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Abstract
The invention discloses a bionic construction method of a sediment erosion preventing coating on a water overflowing surface. The coating is mainly made of polymers and divided into five sublayers, namely, a bonding bottom layer, a first transition layer, an elastic layer, a second transition layer and an epoxy resin rigid surface layer, main raw materials comprise E51 epoxy resin and a curing agent, an XCA-2 polyurethane elastomer and a curing agent, microcapsules, particle packing and a coupling agent, and different material combinations and processes are adopted to prepare the coating according to the function of each layer. According to the bionic construction method, erosion resistant surface structural features of desert lizards are imitated, the coating is of a multilayer structure of which the outer part is hard and the inner part is soft, a hard layer can resist particle grinding, and a soft layer can deform to reduce the surface impact stress; meanwhile, surface material microstructures of shells are imitated, the microcapsules are embedded into the hard layer, and when the microcapsules are cracked from crack tips, surface cracks can be prevented from extending, so that a crack preventing mechanism of the surface hard layer can be constructed.
Description
technical field [0001] The invention belongs to the field of polymer composite materials, and in particular relates to a bionic construction method of an anti-sediment erosion coating on the flow surface of water machines such as water turbines and water pumps. Background technique [0002] my country is rich in water power resources, and the installed capacity of hydropower stations and pumping stations ranks first in the world. At the same time, the severity of sediment concentration in my country's rivers ranks among the best in the world. The problem of sediment erosion and wear on the flow surface of water machines is very prominent, which has always affected equipment. The technical problems of life and safe and economical operation have not yet found a radical solution, and the use of surface coatings to regularly protect and repair the worn surface is the main measure to deal with this problem. [0003] In the 1990s, epoxy resin rigid coatings and composite rubber ela...
Claims
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IPC IPC(8): B32B37/02B32B25/04B32B25/02B32B27/06B32B27/18B32B27/38C09J163/00C09J11/04C09D175/04C09D163/00C09D7/12
Inventor 郭源君杨润吴浩然陈友明王振生李文斌
Owner HUNAN UNIV OF SCI & TECH