Physics, 06.03.2020 19:17, cookies1164
Consider the case of an adhesive joint created by bonding two poly(vinyl chloride) (PVC) (component A) sheets together with an epoxy adhesive (component B). The surface energies for the PVC solid surface, liquid epoxy, and PVC/epoxy interface are 47 erg/cm2, 41.7 erg/cm2, and 4.0 erg/cm2, respectively. (a) Calculate the work of cohesion (going from two interfaces to no interface) within the epoxy adhesive. This is the work required to separate epoxy bonds from one another. (b)Calculate the work of adhesion between one surface of the PVC sheet and the liquid epoxy. This is the work required to separate the epoxy from the PVC. (c) Calculate the free energy of spreading associated with epoxy 'wetting' the PVC. Will the epoxy spontaneously 'wet the PVC?
Answers: 3
Physics, 22.06.2019 03:00, natasniebow
Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c
Answers: 2
Physics, 22.06.2019 19:40, cordovatierra16
Two charged particles, q1 and q2, are located on the x-axis, with q1 at the origin and q2 initially at x1 = 12.2 mm. in this configuration, q1 exerts a repulsive force of 2.62 µn on q2. particle q2 is then moved to x2 = 18.0 mm. what is the force (magnitude and direction) that q2 exerts on q1 at this new location? (give the magnitude in µn.)
Answers: 1
Consider the case of an adhesive joint created by bonding two poly(vinyl chloride) (PVC) (component...
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