Cabot Corporation

About: Cabot Corporation is a company organization based out in Boston, Massachusetts, United States. It is known for research contribution in the topics: Carbon black & Carbon. The organization has 1279 authors who have published 1399 publications receiving 36736 citations.

Approach to interior noise control. II - Self-supporting damped interior shell

Abstract: A companion paper presents theoretical and experimental data identifying the significance of panel critical frequency and structural damping in controlling trim panel dynamic response from excitation at attachment points. This paper explores a logical extension to the trim panel system. The shell presents several desirable nonacoustic properties that may offer design or construction economies. Of concern here is the design considerations that can turn potential acoustic problems into significant advantages. The high stiffness, necessary to make the shell self-supporting, may provide improved low-frequency performance in the vicinity of the double-wall resonance. The low critical frequency, usually implied by this stiffness, may be controlled through design of the panel dynamic properties, judicious location of the attachment points, and effective vibration isolation. Quantitative approaches to each of these issues are explored. A successful installation in one aircraft is described. Nomenclature Bs = flexural rigidity per unit width of the shell, N-m CL = longitudinal wave speed in frame material, m/s / = frequency, Hz fc = critical frequency, Hz h = thickness of the frame flange at the attachment point, m Kf = static stiffness of the fuselage system at the attachment point, N/m KI = isolator spring constant, N/m Ms =mass of the shell panel kg ms = mass per unit area of the shell panel, kg/m2 Yf = drive mobility point of fuselage side attachment point for the isolator, m/N-s Ys = drive point mobility of the shell attachment rx>int, m/N-s Zy = transfer impedance across an isolator, N-s/m p = density of the frame material, kg/m3 co =27r/rad/s

Inkjet ink and ink compositions containing high surface area carbon products

Abstract: Ink compositions including inkjet ink compositions are described which include an ink vehicle and at least one carbon product or modified carbon product having attached at least one organic group. The organic group preferably comprises at least one ionic group, ionizable group, or a mixture thereof. The carbon product or modified carbon product has a BET surface area of at least 625 m2/g. Modified carbon products are also described, as well as ink recording methods using the ink compositions of the present invention.

Methods to control electrical resistivity in filler-polymer compositions and products related thereto

Abstract: Methods to control electrical resistivity in filler-polymer compositions are described using dual phase fillers. Polymer compositions containing the dual phase fillers are further described.

Polyimide insulative layers in multi-layered printed electronic features

Abstract: Processes for forming polyimide coatings during the formation of printed electronic features. In various embodiments, the processes include the steps of: (a) applying a polyimide precursor ink comprising a polyimide precursor onto a substrate or to an electronic feature disposed thereon, preferably through a direct write printing process, e.g., ink-jet printing, (b) converting the polyimide precursor to a polyimide coating; and (c) optionally forming an electronic feature on the polyimide coating.

Treated fumed silica

Abstract: Disclosed herein are treated fumed silica particles comprising a modified polydialkylsiloxane on the surface thereof, a method for preparing treated fumed silica particles, and a rheological system comprising a polar liquid and treated fumed silica particles. Also disclosed are toner compositions comprising toner particles and treated fumed silica particles comprising a modified polydialkylsiloxane.