May 13, 2016 · The DynaGuard™ Board microporous core material is a 1,800ºF continuous-use formulation, and ispressed into a uniform thickness and density to ensure the proper distribution of the core material. In addition to the microporous core, DynaGuard Board systems are also supplied standard encased in a shrink-wrap shell. This shell provides additional minimization of dusting from the material during transportation and handling, adds a degree of moisture resistance during installation, and ...Porous Material. Porous materials are a class of materials with low density, large specific surface and a range of novel properties in the physical, mechanical, thermal, electrical and acoustical fields. From: Handbook of Metal Injection Molding, 2012. Download as PDF. About this page.It creates an explosion of oxygen and acetylene gas at around 6,000 degrees (F), melting the ceramic and firing it at high speed toward the target substrate. • Oxygen Acetylene Powder : This method involves heating ceramic powder under a 5000 degree (F) flame, and usingpressed gas to spray the coating onto the substrate.Rmendations will then be made by the Director to the Goverard for ratification. In the case of renewals, processes for considering proposals must begin not less than 4 months prior to thepletion of the term concerned. The process for renewals is the same as for new applications.