The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 07, 2010
Filed:
Feb. 06, 2008
Gregory R. Yandek, Boron, CA (US);
Darrell Marchant, Lancaster, CA (US);
Joseph M. Mabry, Lancaster, CA (US);
Mark B. Gruber, Landenberg, PA (US);
Mark A. Lamontia, Landenberg, PA (US);
Gregory R. Yandek, Boron, CA (US);
Darrell Marchant, Lancaster, CA (US);
Joseph M. Mabry, Lancaster, CA (US);
Mark B. Gruber, Landenberg, PA (US);
Mark A. Lamontia, Landenberg, PA (US);
United States of America as represented by the Secretary of the Air Force, Washington, DC (US);
Abstract
Method for enhancing the crystallization rates of engineering thermoplastics through the use and incorporation of particulate additives with dimensions on the order of 10-1000 nm is described. The presence of nanoparticles at concentrations of, e.g., less than 10 weight percent of the composition, reduces the viscosity of the thermoplastics as compared to the respective homopolymer, thereby increasing polymer chain transport and diffusion to the crystallizing growth front. The prescription of this technology has been shown to reduce crystallization half times of some engineering thermoplastics by as much as 40 percent at optimal crystallization temperatures, an effect that is magnified as the temperature is reduced towards the glassy state of the amorphous phase. Nano-modified engineering thermoplastics with rapid crystallization kinetics and relatively low viscosities can be utilized in component fabrication processes that require rapid processing times, e.g., for the sake of cost efficiency.