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Solutions of 30 to 40% MEKP are used in industry and by hobbyists as catalyst to initiate the crosslinking of unsaturated polyester resins used in fiberglass, and casting. For this application, MEKP often is dissolved in a phlegmatizer such as dimethyl phthalate , cyclohexane peroxide , [ clarification needed ] or diallyl phthalate [ de ] to ...
Polyester resin has the following disadvantages: Strong styrene odour; More difficult to mix than other resins, such as a two-part epoxy; The toxic nature of its fumes, and especially of its catalyst, MEKP, pose a safety risk if proper protection isn't used; Not appropriate for bonding many substrates
Thus, organic peroxides are useful as initiators for some types of polymerization, such as the acrylic, unsaturated polyester, and vinyl ester resins used in glass-reinforced plastics. MEKP and benzoyl peroxide are commonly used for this purpose. However, the same property also means that organic peroxides can explosively combust.
Pre-accelerated unsaturated polyester resins will cold cure with MEKP and most often are used that way. Un-accelerated resins require heat and catalyst. The terms "thermosetting" and "thermoplastic" are not neccessarily literal and used only to identify whether a plastic is permanently solid and will only decompose if heated or whether it can ...
Tomiko Itooka, a Japanese woman who was the world’s oldest person according to Guinness World Records, has died, an Ashiya city official said Saturday. Yoshitsugu Nagata, an official in charge ...
Alternately, resin casting may be accomplished with a resin plus a nearly equal amount of a "hardener" liquid (as in many epoxy resin or polyester resin systems), which functionally contains a second polymer, for use in forming a final product plastic which is a copolymer. Copolymers contain two different alternating chemical entities in the ...
Related: Much Of The South Is About To Face The Coldest January Since 2011. Water And Drinks. During a long-term power outage, you could lose access to fresh water once your local supply runs out ...
Nearly one year ago, I made four predictions about the stock market in 2024. The Fed indeed cut rates in Q4, but stocks didn't jump as much as I anticipated. Here are my five predictions for the ...