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:
Nov. 14, 2023
Filed:
Mar. 05, 2019
United Arab Emirates University, Al Ain, AE;
UNITED ARAB EMIRATES UNIVERSITY, Al Ain, AE;
Abstract
The buffing dust waste/polystyrene thermal insulator is a polymer composite containing 0.1%-25% by weight buffing dust waste from a leather tannery, the balance being polystyrene. The composite has extremely low thermal conductivity (e.g., 0.0447 W/m-K for a composite 10% budding dust by weight), making it a good insulator, while still having relatively high mechanical properties. The thermal insulator is made by mixing the buffing dust with the polystyrene polymer in a twin-screw extruder and pouring the mixture into a steel mold. The mold is heated and compressed in a hot press machine, e.g., at 500 kg force at 180° C. for 20 minutes, which may be followed by 500 kg force at 125° C. for an additional 20 minutes. The resulting composite polymer is suitable for use as thermal insulation in buildings.