2017年11月3日 · The material, called PMR-15, reacts chemically to form a reinforced plastic that is highly resistant to heat and oxidation. Ferro Corporation and ICI Fiberite cautiously applied the material to a few selected “hot” sections of aircraft structures and engine components.

The initial PMR resin, known as PMR-15, is still commercially available and is used worldwide by the aerospace industry as the state-of-the-art resin for high-temperature polyimide composite applications; including engine bypass ducts, nozzle flaps, bushings, and bearings.

The frontrunner in the race to develop a high temperature resin for use in advanced composites intended for high temperature applications is the NASA developed polyimide PMR-15.

preparation of PMR-15 resins. The isocratic HPLC method has been shown to be the most sensitive method known at present for detecting the existence of such reactions and determining the minimum amount of unreacted NE (10% by weight) necessary to produce parts with acceptable high temperature performance. INTRODUCTION

PMR-15 prepreg was to determine the cause of the variability and resolve the problem so that all material could be fabricated into structural parts using one standard cure cycle.

PMR-15 resin and the changes in elastic moduli and chemical composition resulting from isothermal aging. It has been observed for PMR-15 that the polymer degradation occurs mainly within a thin surface layer that develops and grows during thermal aging.

2004年5月1日 · PMR-15, a high-temperature polyimide developed in the mid-1970s at the NASA Lewis Research Center,1 offers the combination of low cost, easy processing, and good high-temperature performance and stability. It has been recognized as the leading polymer matrix resin for carbon-fiber-reinforced composites used in aircraft engine components.

1998年4月1日 · PMR-15 is a processable, high-temperature polymer developed at the NASA Lewis Research Center in the 1970's principally for aeropropulsion applications.

Plasma cleaning removes surface contamination at the molecular level following machining, tooling and wet chemical processing steps. Plasma precision cleaning is a conformal process, not only for substrates of complex geometries but also on textured surfaces with rough topographies.

The initial PMR resin, known as PMR-15, is still commercially available and is used worldwide by the aerospace industry as the state-of-the-art resin for high-temperature polyimide composite applications; including engine bypass ducts, nozzle flaps, bushings, and bearings. PMR-15 can also be formualted into adhesives and