Common knowledge of coating: "green" heavy-duty anticorrosive coating slows down the surge of PM2.5

The key points are: the heavy-duty anticorrosive coating is advancing along the direction of high performance, high efficiency, low energy consumption and low pollution The development of good high corrosion-resistant resin, new pigments and fillers is the key to the development of heavy-duty anticorrosive coatings Careful surface cleaning of the coating substrate is the basis for the service life of heavy-duty anticorrosive coatings Scientific coating design requirements, coating supporting scheme, coating construction technology, strict quality inspection and maintenance management are the guarantee to achieve the anticorrosive effect of heavy-duty anticorrosive coatings The development of long-term green environmental protection coating is the direction of future coating development The research on the mechanism of environmental factors, the development of new coating raw materials and the construction of Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Home of coatings: heavy duty anticorrosive coatings are moving in the direction of high performance, high efficiency, low energy consumption and low pollution The development of good high corrosion-resistant resin, new pigments and fillers is the key to the development of heavy-duty anticorrosive coatings Careful surface cleaning of the coating substrate is the basis for the service life of heavy-duty anticorrosive coatings Scientific coating design requirements, coating supporting scheme, coating construction technology, strict quality inspection and maintenance management are the guarantee to achieve the anticorrosive effect of heavy-duty anticorrosive coatings The development of long-term green environmental protection coatings is the direction of the future development of coatings The research on the mechanism of environmental factors, the development of new coating raw materials, and the establishment of environmental impact assessment database of coatings are conducive to the realization of this goal In recent years, the products and output of heavy duty coating in developed countries have accounted for about 7% of the coating market; Heavy duty anticorrosive coatings can be divided into four categories: solvent based, thick paste based, water dispersive and powder based The three major resins commonly used are epoxy resin, polyurethane and vinyl resin containing chlorine Epoxy coating and polyurethane coating are the main force of heavy duty anticorrosive coatings and have great development prospects From the perspective of environmental protection, "green" coatings and bio based heavy-duty anticorrosive coatings have more and more development space "Green" paint refers to high solid paint or solvent-free paint With the deepening of human attention to environmental protection, coatings with high solid content even containing 100% solid components emerge as the times require The common anticorrosive coatings contain about 40% volatile matter, most of which are organic solvents, which volatilize to the atmosphere and pollute the environment after coating construction Therefore, it is very important for the application and industrial development of coatings to increase the solid content and reduce the volatile content of coatings The anticorrosive coating with solid content up to 95% has been developed abroad The coating has excellent performance and has been applied in oil field and hydropower industry with good effect Shandong Ocean Chemical Research Institute compared different epoxy resins, epoxy curing agents Based on the characteristics of pigments, fillers and auxiliaries, a thick film solventless epoxy coating was prepared and its properties were tested The results show that the coating has a very low VOC content and meets the requirements of environmental protection The construction and mechanical properties of the coating mainly depend on the types of epoxy resin, epoxy curing agent, pigment and auxiliaries Thermosetting heavy-duty anti-corrosion epoxy powder coating is also "green" In 2002, the production of thermosetting powder coating in China surpassed that in the United States for the first time and became the number one country in the world In recent years, it has maintained a growth rate of more than 25% In 2005, the production reached 500000 tons, accounting for 12.5% of industrial coating materials The Metal Research Institute of Chinese Academy of Sciences has developed two series of heavy corrosion protective coatings, SEBF fusion bonded epoxy coating and SLF polymer composite epoxy coating Daqing Qinglu Chemical Co., Ltd has applied the epoxy resin heavy corrosion powder coating to the steel pipe pile corrosion protection and Western Pipeline Project of Hangzhou Bay Cross Sea Bridge, and achieved good results The special epoxy resin and curing agent for heavy duty anticorrosive powder coating in China have been made in China Phenolic hydroxyl or hydroxymethyl in phenolic resin reacts with epoxy group to modify epoxy resin Due to the similar structure of phenolic curing agent and epoxy resin, the film with good compatibility has better corrosion resistance and toughness than phenolic epoxy system According to the present situation of powder coating at home and abroad, the 11th Research Institute of China Shipbuilding Corporation has developed nox-1 high temperature and strong anticorrosion powder coating, which has been approved by Shanghai chlor alkali General Factory, Shanghai enamel reactor factory, Nantong pesticide factory and Liyang fan The factory and other units have tried to use it for anticorrosion of chemical pipeline, reaction kettle, container, heat exchanger, heat mixer, fan and other equipment, and achieved good results Its non-toxic performance has also attracted the attention of food, pharmaceutical and other industrial anticorrosion departments Waterborne epoxy coatings are literally "green" Epoxy resin emulsion is used as epoxy component and water-soluble amine as curing agent The waterborne epoxy resin anticorrosive primer is made up of two components It is suitable for non-aqueous steel structure which is very strict in solvent emission Moreover, it has solvent like epoxy coatings in terms of hardness, corrosion resistance and construction compatibility When the performance, effectively reduce the VOC content, is the development direction of anti-corrosion coating The biggest characteristic of water dispersive anticorrosive coating is that water is the main solvent instead of xylene, gasoline and other solvents in the common coating, which not only reduces the cost and reduces the environmental pollution, but also can prevent fire and is easy to transport and store, so it has a broad application prospect The experiment of Beijing Nonferrous Metals Research Institute shows that the hydrophilic group on the resin can form organic salt with organic salt forming agent at room temperature, which makes the resin have good water solubility; However, under the condition of high temperature baking, the salt forming agent can volatilize quickly, and some specific groups on the resin can interact with hydrophilic groups, so that the cured resin hardly contains hydrophilic groups Under the joint action of other additives, the final paint film shows hydrophobicity According to this principle, a kind of water-based anticorrosive coating is developed Finally, the epoxy resin system of cashew shell oil, which is a bio based heavy-duty anticorrosive coating, is introduced The modified epoxy resin low viscosity modifier and curing agent synthesized from cashew nut shell liquid were first developed by 3M company, the predecessor of caldera company, in 1980 After nearly 20 years of industrial application, they have been continuously upgraded From the darker color, higher viscosity, to today's low viscosity, light color It has been widely used in the heavy-duty coating system, especially in the marine coating system It has become the standard of the heavy-duty epoxy resin system with low surface treatment and single formula that can be recoated quickly all the year round and high efficiency The United States uses grains and shrimp shells to produce biological "coatings" An expert from brockwen Laboratory of the U.S Department of energy has developed a "biological" coating, which is made from grains, crab shells, lobster or shrimp shells This new coating has a good effect on preventing metal from rusting Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,