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Thermal Accident of Methyl Ethyl Ketone Peroxide Plant
Published in Mihir Kumar Purkait, Piyal Mondal, Murchana Changmai, Vikranth Volli, Chi-Min Shu, Hazards and Safety in Process Industries, 2021
Mihir Kumar Purkait, Piyal Mondal, Murchana Changmai, Vikranth Volli, Chi-Min Shu
Methyl Ethyl Ketone Peroxide (MEKP) is used as a hardener in the manufacture of resins, synthetic rubber and other petrochemical plastics. It is an ingredient of paints, varnishes and paint removers. MEKP is also used in the fiber glass and plastics industry as a curing agent. It is an organic peroxide, which is explosive in its pure form. Hence it is commercially available as a 40–60% solution with stabilizing agents such as dimethyl phthalate, cyclohexane peroxide, or diallyl phthalate (Gooch, 2011; Barbalace, 2009).
Fibreglass repair behaviour as a function of the scarf angle
Published in J. Parunov, C. Guedes Soares, Trends in the Analysis and Design of Marine Structures, 2019
G.V.W. Rothbarth, R.A.Q. Pinto
The curing process, in the case of polyester resin, is started by adding a MEKP catalyser. The whole process after adding MEKP is given in five steps (Dutra 2016), which are: chemical reaction (free radicals formation and cross-link start), exothermic reaction (heat generation), volatility (styrene release), jellification (the liquid resin starts to harden becoming a gel and then viscosity tends to infinity), vitrification (the polymer becomes stiff, with no more molecular motion).
Investigation of thermophysical properties of synthesized SA and nano-alumina reinforced polyester composites
Published in Petroleum Science and Technology, 2022
Hakan Şahal, Ercan Aydoğmuş, Hasan Arslanoğlu
All chemicals used for SA synthesis and analysis were purchased from Merck and used without purifications. The polyester (TP 100) used here is an orthophthalic-based unsaturated polyester (UP) resin. Methyl ethyl ketone peroxide (MEKP, Akperox A1) is used to cure unsaturated polyester resins at room temperature, usually used in combination with cobalt octoate (Co Oc, Akcobalt KXC6) (Orhan et al., 2021; Aydoğmuş et al., 2021; Aydoğmuş and Arslanoğlu, 2021). Alumina has a molecular weight of 101.96 g/mol, an average particle diameter of 45-50 nm, purity of 99.5%, and a density of 0.97 kg/m3. Polyester components were supplied from Turkuaz Polyester and alumina from Merck. FTIR spectra of the SA and composites were recorded for the region of 4000–450 cm−1 on a Mattson 1000 FTIR spectroscopy as KBr disks. 1H NMR spectra were recorded using tetramethylsilane as an internal standard at room temperature with an AVANCE 400 MHz BRUKER spectrometer.
Design, Fabrication and Characteristics of Eco-Friendly Microwave Absorbing Materials: A Review
Published in IETE Technical Review, 2022
Geetika Verma, Kamla Prasan Ray
A pyramidal microwave was designed in the frequency range 7–12 GHz using a composite of rubber tire dust and rice husk. The value of the dielectric constant was found using the co-axial probe method and was reported to be 2.07 for 50:50 composition of rice husk and rubber tire dust. Methyl Ethyl Ketone Peroxide (MEKP) was used as a polymer resin as well as a binder agent. On average, a reflection loss of −20 dB was achieved using the combination [62]. A flat microwave absorber of 30 × 30 × 4 cm was built up by impregnation of activated carbon, made from rubber wood sawdust, and polyurethane showed a reflection loss of 10 dB at 1.8 GHz. The chemical activation process using ZnCl2 solution was used to obtain carbon from rubber wood sawdust [63].