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CN-121990787-A - Spray coating material and preparation method and application method thereof

CN121990787ACN 121990787 ACN121990787 ACN 121990787ACN-121990787-A

Abstract

The invention relates to a spray material, a preparation method and a use method thereof. The spraying material comprises organic resin, ceramic powder, irregular ceramic particles, ceramic beads and an organic amine curing agent, wherein the mass ratio of the organic resin to the ceramic powder is 10 (0.5-4), the mass ratio of the irregular ceramic particles to the spraying material is 3-5 to 10, and the mass ratio of the ceramic beads to the spraying material is 4-6 to 10. The invention obtains the spray coating material with excellent spray coating fluidity, impact strength and wear resistance by using the ceramic powder, irregular ceramic particles and ceramic balls with specific dosage in the spray coating material.

Inventors

  • Gan ke
  • DUAN DONGPING
  • REN YUZHI
  • LI CHUSHENG

Assignees

  • 中国科学院过程工程研究所
  • 中科泽元(北京)科技有限公司

Dates

Publication Date
20260508
Application Date
20260210

Claims (10)

  1. 1. The spray material is characterized by comprising organic resin, ceramic powder, irregular ceramic particles, ceramic beads and an organic amine curing agent; the mass ratio of the organic resin to the ceramic powder is 10 (0.5-4); the mass ratio of the irregular ceramic particles to the spraying material is (3-5) 10; the mass ratio of the ceramic ball to the spraying material is (4-6): 10.
  2. 2. The spray material according to claim 1, wherein the mass ratio of the organic resin to the organic amine curing agent is 10 (2-3.5).
  3. 3. The spray material according to claim 1 or 2, wherein the organic resin comprises any one or a combination of at least two of bisphenol a type epoxy resin, bisphenol B type epoxy resin, bisphenol F type epoxy resin, E48 type novolac epoxy resin, E50 type novolac epoxy resin, E51 type novolac epoxy resin, or novolac resin.
  4. 4. A spray material according to any one of claims 1 to 3, wherein the ceramic powder comprises any one or a combination of at least two of nano silicon carbide, nano silicon nitride, nano silicon dioxide, nano aluminum oxide or nano zirconium oxide; preferably, the median particle diameter of the ceramic powder is 10-100 nm; Preferably, the irregular ceramic particles comprise any one or a combination of at least two of corundum sand particles, brown corundum particles, diamond particles, zirconia corundum particles, zircon sand particles, quartz sand particles, corundum particles or silicon carbide particles; preferably, the irregular ceramic particles have a median particle size of 0.4 to 0.5 mm; Preferably, the shape of the irregular ceramic particles comprises any one or a combination of at least two of sharp, block or polygonal shapes; Preferably, the irregular ceramic particles have an aspect ratio average value of not higher than 0.7 and a standard deviation of not higher than 0.2; preferably, the degree of dullness of the irregular ceramic particles is not higher than 0.6, and the standard deviation is not higher than 0.15.
  5. 5. The spray material according to any one of claims 1 to 4, wherein the ceramic balls comprise any one or a combination of at least two of zirconia ceramic balls, alumina ceramic balls, silicon nitride ceramic balls, or silicon carbide ceramic balls; preferably, the ceramic beads have a median particle size of 0.1 to 4 mm; Preferably, the organic amine curing agent comprises an organic amine epoxy curing agent; Preferably, the organic amine curing agent comprises any one or a combination of at least two of 593-type diethylenetriamine butyl glycidyl ether curing agent, T31-type phenolic amine curing agent, 630-type polyamide curing agent, 631-type polyamide curing agent or 2,4, 6-tris (dimethylaminomethyl) phenol.
  6. 6. The spray material according to any one of claims 1 to 5, wherein the spray material further comprises an organic additive; preferably, the mass ratio of the organic resin to the organic additive is 10 (1.5-3); preferably, the organic additive comprises any one or a combination of at least two of a dispersant, a leveling agent or a defoamer; preferably, the dispersant comprises any one or a combination of at least two of oleic acid, stearic acid, sodium stearate, zinc stearate or AFCONA-4401; Preferably, the leveling agent comprises any one or a combination of at least two of BYK-W985, NANOBYK-3620 or NANOBYK-3611; preferably, the defoamer comprises any one or a combination of at least two of BYK-110, BYK-141 or ethanol; preferably, the mass ratio of the dispersing agent to the ceramic powder is (0.02-0.4): 10; preferably, the mass ratio of the leveling agent to the organic resin is (1-2.5): 10; preferably, the mass ratio of the defoamer to the organic resin is (0.05-0.5): 10.
  7. 7. A method of preparing a spray material according to any one of claims 1 to 6, comprising the steps of: (1) Dividing the ceramic powder, irregular ceramic particles, ceramic beads and optional organic additives into two parts each independently; (2) Mixing a first part of organic additive with organic resin, adding a first part of ceramic powder and a first part of irregular ceramic particles, defoaming, adding a first part of ceramic balls, and defoaming to obtain a component A; Mixing a second part of organic additive with an organic amine curing agent, adding a second part of ceramic powder and a second part of irregular ceramic particles, defoaming, adding a second part of ceramic balls, and defoaming to obtain a component B; (3) And mixing the component A and the component B to obtain the spray material.
  8. 8. The method according to claim 7, wherein the deaeration is performed in a vacuum deaeration machine; preferably, the rotating speed of the vacuum deaeration machine is 1000-2000 rpm; Preferably, the time for the deaeration is 30 s-10 min.
  9. 9. The method of claim 7 or 8, wherein the mixing of step (3) comprises any one or a combination of at least two of manual stirring, mechanical stirring, or centrifugal stirring.
  10. 10. A method of using the spray material of any one of claims 1-6, comprising the steps of: Spraying the spraying material onto the surface of the substrate, compacting, and curing to obtain a coating; preferably, the spray nozzle diameter is 3-10 mm; preferably, the thickness of the coating is 2-20 mm; Preferably, the curing comprises normal temperature curing and/or heat curing, wherein the temperature of the normal temperature curing is 10-40 ℃, and the temperature of the heat curing is 40-120 ℃.

Description

Spray coating material and preparation method and application method thereof Technical Field The invention relates to the technical field of ceramic matrix composite materials, relates to a spraying material, a preparation method and a use method thereof, and in particular relates to a sprayable ceramic matrix corrosion-resistant wear-resistant composite coating material. Background In the fields of metallurgy, mineral products, environmental protection and the like, an overflow piece in equipment is usually in direct contact with a fluid, and ores, slag, waste materials, acid-base slurry and the like carried in the fluid can cause corrosion, erosion, abrasion and the like to the overflow piece. In the actual production process, in order to shorten the production stopping time caused by equipment maintenance and replacement, ceramic-based anti-corrosion wear-resistant coatings are often used for repairing, repairing and other operations on equipment damage. For example, CN115700291a discloses a strong corrosion-resistant wear-resistant zinc pot roller sleeve composite coating, which solves the technical problems of the zinc pot roller sleeve in the production field that the zinc pot roller sleeve requires more corrosion resistance, wear resistance and longer service life, and further improves the productivity and the product quality of the hot dip product production line. CN105568263a discloses a method for preparing SiOC ceramic coating by using CO 2 laser to crack polysiloxane material, the preparation period is short, the ceramic surface is smooth and the porosity is low, and the obtained ceramic coating has good corrosion resistance and wear resistance. However, the ceramic-based anti-corrosion and wear-resistant coating construction process adopted in the prior art is usually in a mode of scraping, brushing or manual painting, and the like, so that the difficulties of uneven coating thickness, long construction time and the like are easily caused, the quality and the progress of equipment repair and repair are affected, and the production cost is increased. Therefore, how to provide a sprayable, curable spray material with good impact strength and wear resistance has become a problem to be solved. Disclosure of Invention In order to solve the technical problems, the invention aims to provide a spraying material and a preparation method and a use method thereof. The spraying material disclosed by the invention takes organic resin as a main binding phase, ceramic powder as a main filling phase, irregular ceramic particles as a shearing phase to promote the overall fluidity of the material, so that the spraying operation is facilitated, ceramic balls as a main wear-resistant phase to promote the overall wear resistance of the material, and an organic amine curing agent curing material is matched. The spraying material prepared by the invention can be coated on the surfaces of materials such as metal, ceramic and the like to form a ceramic-based wear-resistant composite coating, has good spraying fluidity, acid and alkali resistance and aerosol corrosion resistance, does not reduce the impact strength and wear resistance of the cured material, is more suitable for large-area operation of large-size equipment, can make up for the defect that the operation means of wear-resistant repair and repair materials are limited in the actual production and use process, greatly improves the operation efficiency of the wear-resistant coating material, ensures the comprehensive performance of the material, ensures the coating thickness to be more uniform, and effectively reduces the cost. To achieve the purpose, the invention adopts the following technical scheme: In a first aspect, the present invention provides a spray material comprising an organic resin, ceramic powder, irregular ceramic particles, ceramic beads, and an organic amine curing agent; The mass ratio of the organic resin to the ceramic powder is 10 (0.5-4), for example, the mass ratio can be 10:1, 10:1.5, 10:2, 10:2.5, 10:3 or 10:3.5, etc.; the mass ratio of the irregular ceramic particles to the spraying material is (3-5): 10, for example, 3.3:10, 3.5:10, 4:10, 4.5:10 or 4.8:10, etc.; The mass ratio of the ceramic ball to the spraying material is (4-6): 10, and can be 4.5:10, 4.8:10, 5:10, 5.5:10 or 5.8:10, for example. In the invention, a material which can be sprayed and has good performance can be prepared by using the combination of the filling phase nano ceramic powder, the shearing phase ceramic particles and the wear-resistant phase ceramic balls. The shearing phase ceramic particles can cut off or shear the continuity of the composite material, reduce the viscosity of the material, and enable the material to have integral fluidity so as to be suitable for spraying operation. In the present invention, the amounts of ceramic powder, irregular ceramic particles and ceramic beads need to be controlled within a specific range. If the amount of irregu