| Effects of particle size and rubber content on fracture toughness in rubber-modified epoxies.: An article from: Polymer Engineering and Science |  | Authors: D.S. Kim, K. Cho, J.K. Kim, C.E. Park
Publisher: Society of Plastics Engineers, Inc.
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Format: HTML
Language: English (Published)
Media: Digital
Pages: 15
ASIN: B00096JP4C
Publication Date: March 1, 1996
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This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on March 1, 1996. The length of the article is 4382 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: The effects of particle size of core-shell rubber on the fracture toughness of rubber-modified epoxies were investigated. Various sizes of core-shell rubber particles, from 0.16 to 1.2 [[micro]meter] in diameter, were synthesized by seeded emulsion polymerization. Particle size effects were clearly seen for lower crosslinked diglycidyl ether of bisphenol A (DGEBA)/piperidine resin. Fracture toughness increased as the particle size of core-shell rubber decreased from 1.2 to 0.4 [[micro]meter]. On the other hand, fracture toughness was constant in this range of particle sizes for higher crosslinked DGEBA/diaminodiphenylmethane (DDM) resin. Cavitation in the rubbery core and shear deformation in the matrix are the toughening mechanisms for DGEBA/piperidine resin, whereas cavitation is the only mechanism for DGEBA/DDM resin. Toughening effectiveness decreased with [less than]0.2 [[micro]meter] core-shell rubber particles since they are difficult to cavitate. The effects of core-shell rubber content on fracture toughness of rubber-modified epoxies were also examined. The optimum rubber content for maximum toughness of rubber-modified epoxies decreased with decreased particle size of core-shell rubber in shear deformable DGEBA/piperidine resin. But the fracture toughness of rubber-modified DGEBA/DDM resins increased as the rubber content increased.
Citation Details
Title: Effects of particle size and rubber content on fracture toughness in rubber-modified epoxies.
Author: D.S. Kim
Publication: Polymer Engineering and Science (Refereed)
Date: March 1, 1996
Publisher: Society of Plastics Engineers, Inc.
Volume: v36 Issue: n6 Page: p755(14)
Distributed by Thomson Gale
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