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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).
Design and Development of Banana Leaves-based Double-layer Microwave Absorber
Published in IETE Journal of Research, 2023
Soumya Sundar Pattanayak, S. H. Laskar, Swagatadeb Sahoo
The banana leaves are exposed to direct sun for 10 days to dry. Thereafter, the grinder is used to blend the dry leaves to microscopic powder form. Polyester resin, MEKP (methyl ethyl ketone peroxide), and are used as a binding agent, hardening agent, and accelerator, respectively, for the fabrication of the particleboard. Resin with hardening agent is used to bind the particles of the material and the consecutive two layers of the constituents. It delivers the strength between two successive layers by reducing the airgap and thus protect it from abrasion [20]. In this investigation, two single-layer particle boards named as sample_1 and sample_2 and double layer absorber named as sample_3 have been fabricated and details of the samples are depicted in Table 1. Sample_3 has been fabricated by binding sample_1 and sample_2 using above mentioned binding agent. For uniform mixing, charcoal powder and banana leave powder has been ultrasonicated for 30 min. Subsequently, the banana leaves for the fabrication of sample_1 and banana leaves, and charcoal powder for the fabrication of sample_2 have been uniformly mixed in to maintain uniform densities followed by continuous ultrasonication for 1 hr.
Numerical and experimental buckling response of moderately thick and thick composite plates with various stiffener layouts
Published in Mechanics of Advanced Materials and Structures, 2022
Mojtaba Rafiee, Mehrdad Hejazi, Hossein Amoushahi
A glass-reinforced polymer type woven roving in the and directions cloth and polyester resin to impregnate this cloth is used to fabricate the moderately thick and thick stiffened composite plates, and their mechanical properties are determined employing the ASTM D3039 [28]. The cloth, Polyester resin, Cobalt, Methyl Ethyl Ketone Peroxide, Paraffin wax, Brush, Measuring Tape, Release Film and Cutter are employed to prepare the specimens. First, on a flat surface of the glass, some Release Film and Paraffin wax are poured, then using the hand layup technique, seven symmetrical layups and twelve symmetrical layups by six end-tabs are arranged according to Figure 3. Finally, some Cobalt and Methyl Ethyl Ketone Peroxide are added to the resin and spread by brush on them to accelerate the drying and raise the rate of curing. The purpose of applying the end-tabs in the fabrication of specimens is to prevent premature failures caused by stress concentrations. Figure 4 shows the specimens before the testing.
Styrene-based unsaturated polyester-tungsten(VI) oxide composites: Preparation and investigation of their radiation shielding and thermal properties
Published in Radiation Effects and Defects in Solids, 2022
Berna Körpınar, Buket Canbaz Öztürk, N. Füsun Çam, Hakan Akat
Firstly, To produce styrene-based unsaturated polyester resin (Poliya brand Polipol 357-C , 6% Co-doped, density 1.06-1.65 g / cm3) and methyl ethyl ketone peroxide (Promox brand, Promox P211TX) was cured at 70°C Figure 3(a) shows FTIR spectrum of resin, composite and WO3.2H2O. . Similarly, WO3.2H2O nanoparticles was mixed with styrene-based unsaturated polyester resin for an average of 20 min at a rate of 10%, 20%, 30%, 40%, and 50% by mass. After adding methyl ethyl ketone peroxide solution as a catalyst, the mixing process was continued for another 10 min. After the mixing process is completed, it is poured into 10 cm x 10 cm molds and left to cure for 6 h in the standard at 70°C for each sample. (Figure 3(b)) (a) FTIR spectrum of resin, composite, and WO3.2H2O. (b) Preparation of polymer composites.