The primer contains coating [mainly composed of epoxy resin, 20-200 parts of zinc powder and 0.05-0.5 part of thermal expansion powder (based on 100 part of coating)] and 0.2-2.5 part of epoxy silane coupling agent (based on 100 part of zinc powder). For example, 10 part of paint consisting of Epo Tohto VD.0 1 193 parts, Dicyanex 200 (dicyandiamide) 4 parts and Omicure 943 parts, F 1000 (zinc powder) 200 parts, and SH6040 (disilane coupling agent) 2 parts. Kloc-0/5 degreased steel screws were soaked with primer, dried and baked at 170℃. After contacting in salt solution for 200 hours, the corrosion of painted steel screws was less than 0. 1% (spray coating, JIS Z-237 1).
98-32 Corrosion-resistant and Wear-resistant silicone Waterborne Coatings Containing Bivalent Metal Ions and Its Application in Hull
Wo98- 18855[ international patent application. English/America: blue. Rivers. International limited liability company (Gedeon, Anthony A. et al.)-1998.5.7. -Page 26. -US 29468 (US 29468) IPC C08K3/ 10
Waterborne coatings contain silsesquioxane oligomer (such as methyltrimethoxysilane) matrix or a mixture with a small amount of other polysilicate triols in a non-aqueous solvent, and a solution of divalent metal ions (such as Ca2) in a water-alkyd solvent system of partial condensation products of monomethylsilanol (r- glycidyl siloxane and phenylsilanol). For example, an aqueous solution (pH2.8) containing 0. 12mmol of calcium oxide, 5g of glacial acetic acid and 235g of water is slowly added to 400g of 50% isopropanol solution containing methyltrimethoxysilane to obtain a mixture with a pH of about 3.4. Coating on aluminum plate, curing at 80℃ for 30 minutes, salt spray test 1000h, no corrosion on the substrate.
98-33 anticorrosive coating composition with good adhesion to oily surface
JP98- 120975 [Japanese Patent Publication]/Japan: Nissan Motor Company (torii, Xinyi, etc. ).-1998.5. 12.-6 pages. -96/297883(65483)IPC c09d 163/02
The composition contains liquid epoxy resin derived from bisphenol A and/or bisphenol F, wax, plasticizer, active diluent and epoxy resin latent curing agent. After 400h salt spray test, the coating film formed by it does not rust, and the shear strength is ≥ 1 1Mpa. A composition contains Epikote 828 100, dicyandiamide 8, tricresyl phosphate 1: 1, hiwax NL- 100 5 and F-35 1 65438+.
98-34 Method of preventing metal plate from corrosion with vinyl silane
WO98- 19798[ international patent application, UK]/USA: University of Cincinnati, etc. (Van Ooij, Wim J, etc.). -1998.5. 14.-22 pages. -US 743864 (65438 IPC B05D7/00
The operation of the subject method is as follows: the metal plate is selected from painted steel plate, aluminum plate and aluminum alloy plate, and a solution containing hydrolyzable vinylsilane greater than or equal to 1 is coated on the metal plate. One end of vinyl silane is vinyl, and the other end is Si(OH)(OR 1)(OR2) group (R 1, R2 = h, alkyl, acetyl). Coatings (such as polyester or polyurethane powder coatings) or other polymers can be directly coated on the vinyl silane coating film.
98-35 Method of coating metal with polyphosphonic acid adhesive anticorrosive coating
EP846733 [European Patent Publication, Germany]/Germany: Daimler-Benz A.-G. (Naegele, Ute et al. ).-1998.6. 10.-5. -DE 19650478(65478 IPC c09d 5/08
In this method, the metal consists of polymers with phosphonic acid number per molecule and glass transition temperature > 100℃ and/or low molecular weight phosphonic acid and/or carboxylic acid (number of C atoms ≤30). Coil steel plate is primed with 5% aqueous solution of polyvinyl phosphonic acid (relative molecular weight 12000), baked at 200℃ for 10 min, and then sprayed with conventional coating composition. The obtained coating has good dry and wet adhesion and salt spray corrosion resistance.
98-36 resin coated metal has excellent hot water resistance, corrosion resistance and chemical resistance.
JP98-202786[ Japanese Patent Publication]/Japan: Japan Guoguang Co., Ltd. (Qiao Xiong Beichuan et al. ).-1998.8.4.-7 pages. -97/8 132( 1997)IPC b32b 15/08
A poly (ether-ester-ketone) (PEEK), poly (phenyl sulfide) and/or poly (ether-sulfone) composition (containing 10% ~ 15% inorganic filler) is coated on a metal substrate, and then covered with a filler-free composition similar to the polymer substrate. For example, after chromate treatment, the steel plate is coated with PEEK with glass as flake filler first, and then coated with PEEK without filler. The prepared samples have good coating adhesion, hot water resistance and acid resistance.
98-37 Liquid Rubber Anticorrosive Coatings for Metals, Workpieces Coated with the Coatings and Their Vulcanization
WO98-22225 (International Patent Application, UK)/USA: MMR Technology Company (Rappoport, Leonid). -1998.5.28.-30 pages; -us 7542 16( 1996. 1 1.20)； IPC B05D3/02
A mixture containing epoxidized liquid rubber, amine curing agent and sulfur. It is coated on the surface of metal and cured, and the obtained coating film has good durability and strong anti-corrosion effect on metal. Amine vulcanizing agent activates and dissolves sulfur by opening the closed-loop structure, thus shortening the vulcanization time, connecting rubber molecules together and forming a continuous molecular film. Active sulfur can also be connected with rubber molecules, and polymer films can be anchored on the surface of metal substrates through chemical bonds. It is best to add two types of accelerators to this formula (due to their synergistic effect, the curing time can be shortened to below 1h). Adding alumina micropowder to the formula can improve the heating uniformity during curing, thus forming a more uniform coating. Adding calcium oxide together with amine and alumina can completely absorb the acid gas generated in the curing process. Adding high molecular weight nitrile rubber can improve the impact resistance, low temperature flexibility and adhesion of the coating.
98-38 Drunk Rust Conversion Transparent Coatings
CNll97824A [Publication of China Invention Patent Application]/China: 12th Research Institute of China State Shipbuilding Corporation (Wang Shu et al.). - 1998. 1 1.4.-97 104 156.3 ( 198).IPC C09D 129/ 14
The invention discloses a coating composition for the surface of steel castings. Consists of polyvinyl butyral, epoxy resin, phenolic resin, phosphoric acid, film-forming assistant, plasticizer, leveling agent, accelerator, ethanol and acetone. The invention is a one-component transparent coating integrating phosphating and film covering, and has the characteristics of strong adhesion, good flexibility, good oil resistance, good corrosion resistance and low toxicity during construction. It can be used for long-term protection of steel castings and forgings of diesel and gasoline engines, and can also be used as primer for ships, bridges, machinery, pipelines and chemical equipment.
Coating method of 98-39 steel and anticorrosive coating used.
JP98- 137683[ Japanese Patent Publication]/Japan: Nippon Steel Corporation (Daitoku, Kazumi). -1998.5.26.- 13. -96/265379 ( 1999)
The method is to coat the steel surface coated with zinc-rich primer with a composition containing resin (such as epoxy resin), slag with alkaline groups and/or alkaline compound powder (pH 8- 13, such as barium metaborate).
98-40 Chromate Anticorrosive Solution and Its Treated Metal Plate
JP98- 176280 [Japanese Patent Laikai]/Japan: Nippon Steel Corporation (Yamazaki, Fujitsu, etc. ).-1998.6.30.-7 pages. -96/336 145 (65438+)
The chromate treatment solution contains (a) a water-dispersible mixed resin containing a heat-dissipating plastic elastomer with a water content of ≥ 20% in an amount of 5-150g/L; (b) a water-soluble chromium compound, the dosage (calculated as CrO3) is 5-60g/L, and the ratio of Cr (VI)/[Cr (VI)+Cr (III)] is 0.2-0.8; (c) silicon dioxide with an amount of 65438-0-5, and (d) inorganic acid with an amount of 0.5-5. The surface-treated metal plate contains Cr 5 ~ 300 mg/m2 in chromate liquid film. For example, a chromate treatment solution containing 60g/L acrylic acid-styrene-butadiene rubber, 15g/L (calculated as Cr) Cr03, 30g/L SiO 2 and 30g/L h3po 4 is coated on one side of a galvanized steel plate and dried at 80℃. The film contains 50 mg/m2 of chromium, the dissolution of chromium is less than 5% after boiling for 30min, and no white rust is produced in JIS Z 237 1 salt spray test, so it has excellent adhesion to melamine-alkyd resin film.
98-4 1 anti-bubble corrosion coating
CNll99073A [China Invention Patent Application Publication]/China: Institute of Marine Coatings, Ministry of Chemical Industry (Yu et al.). - 1998. 1 18.-97 10586 1 . x(65438 IPC c09d 163/ 10
An anti-foam corrosion coating comprises a primer and a topcoat composition, and is characterized in that the primer consists of epoxy resin with an epoxy equivalent of 180-240, epoxy-terminated polyurethane, filler, auxiliary agent and curing agent, with mass fractions of 45-55, 7.5-20, 6.5-26, 0.5-2.5 and 65438 respectively. The primer of the coating has good adhesion to the material, the surface layer has good cavitation resistance, corrosion resistance and hydrolysis resistance, and the cost is low and the construction process is simple.
98-42 Anticorrosive Coating Composition and Anticorrosive Treatment Method
CN 1203056A [China Patent Application Publication]/Japan: Japan Coatings Co., Ltd. (Jin Jingyang et al.). - 1998. 12.9.-98 1 14727.5 ( 1998.C09D5/08
The invention provides a cheap chromium-free anticorrosive coating composition and an anticorrosive treatment method, and its anticorrosive performance is superior to that of the common chromium-containing anticorrosive coating composition. In the components based on water-based resin and water with the total amount of 1L, the anticorrosive coating composition of the present invention contains 0.2~50g of sulfur-containing carbonyl compound and 0.1-5g of phosphate ion, or additionally contains10-500g of water-dispersible silica. The anti-corrosion treatment method of the present invention includes coating a zinc-coated steel plate or an uncoated steel plate with an anti-corrosion coating composition.
98-43 Anti-corrosion and Anti-sticking Coatings
Cn2200388a [China Patent Application Publication]/China: Chongqing Iron and Steel (Group) Co., Ltd. (Qi Guoxiang et al.). - 1998. 12.2.-97 107522.0 ( 1997.5.26).IPC C09D 123/34
The invention discloses an anticorrosive and anti-sticking coating, which comprises (by mass) chlorosulfonated polyethylene 80%-98%, graphite 1.5%-20% and molybdenum disulfide 0.5%-2%. The coating has the advantages of low cost, simple coating process and convenient use. When the coating is applied to the inner wall of metal pipes, the surface is uniform, dust-free and corrosion-free, and it is especially suitable for corrosion prevention and adhesion prevention of metal pipes and equipment conveying moisture, dust and corrosive gases.
98-44 antirust liquid
Cnl 200386 a[ China patent application publication]/China: Que Shi Xiu (Que Shi Xiu). - 1998. 12.2.-97 108922. 1 ( 1997.5.27); C09D5/08
The invention is a water-soluble antirust liquid, which is mainly used for antirust of ferrous metal products and mechanical parts. Its formula is: sodium benzoate 8%- 10%, sodium nitrite 8%- 10%, urea 4%-6%, starch 2%-2.5%, caustic soda 0.4%-0.45%, and the balance is water. The antirust liquid is safe, simple in composition, low in cost and long in antirust period. Ferrous metal products and mechanical parts are coated with antirust liquid and encapsulated with waterproof material, and the antirust time can reach more than 4a.
98-45 Oil Surface Anticorrosive Coating Composition
JP98-/KOOC-0/83383 [Japanese Patent Publication]/Japan: Nissan Motor Co., Ltd. (torii, Shinji et al.)-/KOOC-0/998.7./KOOC-0/4. -Six pages. -96/355895(65438 IPCC 23 f 1 1/00
A composition suitable for automobile standard steel plate contains bisphenol A and/or bisphenol F epoxy resin, defoamer, plasticizer, active diluent and latent curing agent. The coating will not rust after 400 hours of salt spray test. For example, the composition contains Epikote828 100, dicyandiamide 8, glycidyl butyl ether 100, Flowlen AC326F (ethylene-acrylic polymer) 3, core-shell methacrylate polymer 10 and CaCO3 10. Its coating has good adhesion to oily surface and does not blister after curing.