東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Fracture behavior of epoxy-based hyb...

Lehigh University., Materials Science and Engineering.

Linked to FindBook

Google Book

Amazon

博客來

Fracture behavior of epoxy-based hybrid composites /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Fracture behavior of epoxy-based hybrid composites // Daniel Davies.
Author:	Davies, Daniel,
Description:	1 electronic resource (93 pages)
Notes:	Source: Masters Abstracts International, Volume: 75-08.
Contained By:	Masters Abstracts International75-08.
Subject:	Engineering. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1550502
ISBN:	9781303659126

Fracture behavior of epoxy-based hybrid composites /
Davies, Daniel,

Fracture behavior of epoxy-based hybrid composites /Daniel Davies. - 1 electronic resource (93 pages)

Source: Masters Abstracts International, Volume: 75-08.

Crosslinked epoxy resins have become popular materials in advanced engineering applications such as the aerospace, packaging, coatings, electrical, and adhesive industries. These resins offer a high strength to weight ratio, but have a drawback of being inherently brittle and exhibit poor flaw tolerance. In microelectronic packaging applications, the thermal expansion coefficients (CTEs) of neat epoxy resins are too high. The addition of inorganic fillers is a traditional solution for increasing fracture toughness and lowering CTE. Such a solution is routinely utilized in epoxy-based underfills used in flip chip packaging. Of particular interest in this study, is the incorporation of soft, compliant rubbery particles and stiff, rigid silica particles into a model epoxy system. Rubber particle addition has proven to be extremely effective at improving fracture toughness of epoxy composite resins through rubber particle cavitation, matrix void growth, and massive shear yielding mechanisms. The addition of silica particles can also provide increases in fracture toughness, and do so without the compromises of decreased yield strength or increased CTE. Hybrid composites comprised of both rubber and silica particles have shown synergistic toughening benefits by some researchers. In this particular study, an aromatic amine cured bisphenol-A based epoxy resin is used as the model epoxy matrix. The fracture behavior of epoxies filled with silica micro-spheres and/or rubber nano-particles at various concentrations in the matrix have been studied. Micron-size silica particles successfully showed decreases in the CTE of the epoxy matrix, but only provided minimal toughening benefits. Nanometer-size core-shell-rubber particles provided exceptional toughening benefits, but resulted in increased CTE of the epoxy matrix. Interestingly, some hybrid epoxy composite formulations exhibited excellent fracture toughness and reasonable CTE behavior. It is the ultimate goal of this study to provide an understanding of the toughening mechanisms produced for each additive and their interactive effects on each other. It has been hypothesized that the use of rubber nanoparticles in a highly silica filled epoxy may result in significant improvements in toughness since these nanoparticle may be able to grow shear bands around the micron-size silica particles. The results from this study support this hypothesis.

English

ISBN: 9781303659126Subjects--Topical Terms:

586835
Engineering.
Subjects--Index Terms:

Composites

Fracture behavior of epoxy-based hybrid composites /
LDR:03925nmm a22004813i 4500 001 2396098
005 20250522083147.5
006 m o d
007 cr|nu||||||||
008 251215s2013 miu||||||m |||||||eng d
020 $a 9781303659126
035 $a (MiAaPQD)AAI1550502
035 $a (MiAaPQD)lehigh:11070
035 $a AAI1550502
040 $a MiAaPQD $b eng $c MiAaPQD $e rda
100 1 $a Davies, Daniel, $e author. $3 3765640
245 1 0 $a Fracture behavior of epoxy-based hybrid composites / $c Daniel Davies.
264 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2013
300 $a 1 electronic resource (93 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Masters Abstracts International, Volume: 75-08.
500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisors: Pearson, Raymond A.; Chan, Helen M.
502 $b M.S. $c Lehigh University $d 2013.
520 $a Crosslinked epoxy resins have become popular materials in advanced engineering applications such as the aerospace, packaging, coatings, electrical, and adhesive industries. These resins offer a high strength to weight ratio, but have a drawback of being inherently brittle and exhibit poor flaw tolerance. In microelectronic packaging applications, the thermal expansion coefficients (CTEs) of neat epoxy resins are too high. The addition of inorganic fillers is a traditional solution for increasing fracture toughness and lowering CTE. Such a solution is routinely utilized in epoxy-based underfills used in flip chip packaging. Of particular interest in this study, is the incorporation of soft, compliant rubbery particles and stiff, rigid silica particles into a model epoxy system. Rubber particle addition has proven to be extremely effective at improving fracture toughness of epoxy composite resins through rubber particle cavitation, matrix void growth, and massive shear yielding mechanisms. The addition of silica particles can also provide increases in fracture toughness, and do so without the compromises of decreased yield strength or increased CTE. Hybrid composites comprised of both rubber and silica particles have shown synergistic toughening benefits by some researchers. In this particular study, an aromatic amine cured bisphenol-A based epoxy resin is used as the model epoxy matrix. The fracture behavior of epoxies filled with silica micro-spheres and/or rubber nano-particles at various concentrations in the matrix have been studied. Micron-size silica particles successfully showed decreases in the CTE of the epoxy matrix, but only provided minimal toughening benefits. Nanometer-size core-shell-rubber particles provided exceptional toughening benefits, but resulted in increased CTE of the epoxy matrix. Interestingly, some hybrid epoxy composite formulations exhibited excellent fracture toughness and reasonable CTE behavior. It is the ultimate goal of this study to provide an understanding of the toughening mechanisms produced for each additive and their interactive effects on each other. It has been hypothesized that the use of rubber nanoparticles in a highly silica filled epoxy may result in significant improvements in toughness since these nanoparticle may be able to grow shear bands around the micron-size silica particles. The results from this study support this hypothesis.
546 $a English
590 $a School code: 0105
650 4 $a Engineering. $3 586835
650 4 $a Packaging. $3 585030
650 4 $a Plastics. $3 649803
653 $a Composites
653 $a Epoxy resin
653 $a Fracture behavior
653 $a Hybrids
653 $a Microelectronics
653 $a Underfill
690 $a 0537
690 $a 0549
690 $a 0795
710 2 $a Lehigh University. $b Materials Science and Engineering. $e degree granting institution. $3 3765641
720 1 $a Pearson, Raymond A. $e degree supervisor.
720 1 $a Chan, Helen M. $e degree supervisor.
773 0 $t Masters Abstracts International $g 75-08.
790 $a 0105
791 $a M.S.
792 $a 2013
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1550502