Main varieties of fusion bonded epoxy coating 228

228 fusion bonded epoxy powder is a solid, multi-component petroleum based resin, which is in the form of a single component It is composed of epoxy resin, curing agent, additives, pigments, curing accelerators, leveling and flow regulators Various raw materials are strictly selected to ensure that the anticorrosive coating can withstand various environmental conditions that may be encountered by underground and underwater pipeline systems 228 fusion bonded epoxy powder has various grades of gel and curing speed to meet the normal smooth production of all the various piping specifications of all the coated construction plants, and to minimize the downtime of specification switching These brands are 228-04228-08228-11 respectively The selection of chemical elements in fusion bonded epoxy powder coating is very important The molecular structure of epoxy resin, the type and reactivity of curing agent and accelerant, and various auxiliaries also play an important role in the final performance of the coating We should always maintain a test group specialized in the research and development of fusion bonded epoxy powder coating, and have many years of scientific literacy and practical experience in coating and surface treatment technology In addition, it can also synthesize and produce all kinds of special brand epoxy resin, curing agent, accelerant and additives in the formulation of anti-corrosion coating that meet the requirements of special use and operation 1 Characteristic 228 fusion bonded epoxy powder is produced by melting blending process developed by 3M company All kinds of ingredients are first crushed, correctly measured, and evenly mixed in the dry state Then the mixed materials are completely mixed in the melting state with a continuous melting machine After cooling, the melt blend is crushed again to the final powder state This melt blending process can ensure that every particle in the resin powder contains all active components, thus eliminating the possibility of reactivity change caused by phase separation and stratification of various components during transportation and construction All kinds of raw materials are strictly selected to ensure that 228 coating can withstand various environmental conditions that may be encountered by underground and underwater pipeline systems Powder epoxy is packed in a load-bearing polyethylene bag placed in a fiberboard box, with an obvious product number and manufacturing mark on the outside This packaging method can protect the resin powder from moisture and pollution during transportation and storage The net weight of each package is 65 US pounds (29.4 kg) The packed crates are placed on wooden pallets, with a net weight of 1170 pounds (511 kg) They are firmly bound for transportation, and other packaging forms can also be adopted 2 Test shows that process control is very important to the quality of finished products The strict quality inspection of raw material receiving, accurate measurement and measurement of key components, and discharge inspection of finished powder shall be maintained to ensure the uniformity of product construction and use performance The quality inspection for the 228 powder includes gel time, curing property, flow property, particle size distribution, fluidization, bending, appearance and moisture content 3 As long as the coating construction is correct, the fusion bonded epoxy powder with working temperature of 228 should show satisfactory performance between - 73 ℃ and 110 ℃