9 research outputs found
Induction curing made easy - Using curie particles
Commonly used adhesives for glued-in rods in timber engineering, cold curing two-component (2K) epoxies or polyurethanes, only harden relatively slowly (usually in hours to days), which is magnitudes of times longer than mechanical fastening. Additional constraints arise from the fact that they usually necessitate some minimum temperature so that polymerisation can take place. Induction heating was investigated in the light of two timber engineering applications, glued-in glass fibre reinforced rods in timber, and timber-glass structures
Synthesis and styrene copolymerization of novel alkoxy ring-substituted isobutyl phenylcyanoacrylates
Novel alkoxy ring-substituted isobutyl phenylcyanoacrylates, RPhCH=C(CN)CO2CH2CH(CH3)2 (where R is 2-methoxy, 3-methoxy, 4-methoxy, 2-ethoxy, 3-ethoxy, 4-ethoxy, 4-propoxy, 4-butoxy, 4-hexyloxy) were prepared and copolymerized with styrene. The acrylates were synthesized by the piperidine catalyzed Knoevenagel condensation of ring-substituted benzaldehydes and isobutyl cyanoacetate and characterized by CHN elemental analysis, IR, 1H- and 13C-NMR. All the acrylates were copolymerized with styrene in solution with radical initiation (ABCN) at 70C. The composition of the copolymers was calculated from nitrogen analysis, and the structures were analyzed by IR, 1H and 13C-NMR. Thermal properties of the copolymers are characterized by DSC and TGA. Decomposition of the copolymers in nitrogen occurred in two steps, first in the 200-500ºC range with residue (1.8-3.3% wt.), which then decomposed in the 500-800ºC range
Modelling and strength prediction of pre-tensioned hybrid bonded joints for structural steel applications
Dietary Patterns and Mortality in a Multinational Cohort of Adults Receiving Hemodialysis
Clinical practice guidelines for dietary intake in hemodialysis focus on individual nutrients. Little is known about associations of dietary patterns with survival. We evaluated the associations of dietary patterns with cardiovascular and all-cause mortality among adults treated by hemodialysis