A Graphical Representation of Tribological Properties in Polymer-Graphite/Epoxy Sliding

Surface Morphology Studies in Polymer-Graphite/Epoxy Sliding

“…Also in Ref. (2), are the regression ecluations usecl for clevelol~ing t.lle I hree-climensional geometric "s~trf:~ces" 01' weat-versus lillerorietttation ;incl virgin surl':ice roughness. T h r o u g l~o~t t tl~is paper, the \\lorcl " s~~r l k c e " ill q~colcs will refer to the geonietric "s~trf'lces," whereas "surlace" ruilhorcl qrtolcs will rel'er LO the morpl~ological wear surfaces.…”

“…-1' he plates were testecl so that the fibers were oriented (as sho\vn In I :il)les I ancl 2 I'rom Ref. (2) show the filler orientation, virgin surl'~ice roughness, coefficient of friction, ancl wear r:lles I'or slicling ~)olycarl)ollate ancl UHhl\,VPE against gr;iphite/el)oxy uncler 8.9-ant1 35.6-N lo:icls. As statecl in liel'.…”

“…rate. More data were taken ancl ~lsecl to clevelop three-dimensional geometric "surfaces" which clearly showed the clependency of coefficient of friction ant1 wear rate on normal load, fiber orientation, ancl \ ' 'tr g' 111 surface roughness (2). These geometric "surfaces" reaclily inclicated differences in tribological properties of the polymers, allowed for easy identification of maximum and niinimuni points and provicled for interpolation to ~lntested conditions.…”

A Numerical Model for the Optimal Vulcanization of 2D Polar Rubber Compounds Using Microwaves

“…In the simulations, 7 different oven nominal powers have been investigated, corresponding to commercial values ranging from 2 500 to 4 500 W. Within the grid method, for each fixed nominal power, 81 numerical simulations have been repeated, increasing exposure time in the oven, see Equation (22). Simulations have been replicated using the aforementioned 4 different peroxides as reticulation inducers.…”

“…The temperature inside the element is somewhat homogeneous, with a slight increase of temperatures in the internal region of the object, as expected theoretically (see also ref. [19][20][21][22] ). During traditional vulcanization, external layers undergo very high temperatures, whereas the internal core remains cooler.…”