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| | The rotational molding of a thermotropic liquid crystalline polymer.: An article from: Polymer Engineering and Science |  | Authors: Eric Scribben, Donald Baird
Publisher: Society of Plastics Engineers, Inc.
Category: Book
Buy New: $5.95
Format: Html
Media: Digital
Pages: 31
ASIN: B0009H2SQ8
Publication Date: March 1, 2005
Availability: Available for download now
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Product Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on March 1, 2005. The length of the article is 9167 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.
From the author: Thermotropic liquid crystalline polymers (TLCPs) exhibit a number of mechanical and physical properties such as excellent chemical resistance, low permeability, low coefficient of thermal expansion, high tensile strength and modulus, and good impact resistance, which make them desirable as a rotationally molded storage vessel. However, there are no reports in the technical literature of the successful rotational molding of TLCPs. In this article, conditions are identified that lead to the successful rotational molding of a TLCP, Vectra B 950. First, a technique was developed to produce particles suitable for rotational molding because TLCPs cannot be ground into a free-flowing powder. Second, because the viscosity at low shear rates can be detrimental to the sintering process, coalescence experiments with isolated particles were carried out to determine the thermal and environmental conditions at which sintering should occur. These conditions were then applied to static sintering experiments to determine whether coalescence and densification of the bulk powder would occur. Finally, the powders were successfully rotationally molded into tubular structures in a single axis, lab-scale device. The density of the molded structure was essentially equivalent to the material density and the tensile strength and modulus were approximately 18 MPa and 2 GPa, respectively. POLYM. ENG. SCI., 45:410-423, 2005. [c] Society of Plastics Engineers
Citation Details
Title: The rotational molding of a thermotropic liquid crystalline polymer.
Author: Eric Scribben
Publication: Polymer Engineering and Science (Refereed)
Date: March 1, 2005
Publisher: Society of Plastics Engineers, Inc.
Volume: 45 Issue: 3 Page: 410(14)
Distributed by Thomson Gale
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