| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2011-02-01 |
| タイトル |
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|
タイトル |
Rheology of SiO2/(Acrylic Polymer/Epoxy) Suspensions. II. Nonlinear Stress Relaxation |
| 言語 |
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|
言語 |
eng |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Nonlinear stress relaxation |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Time-strain separability |
| キーワード |
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主題Scheme |
Other |
|
主題 |
Sol-gel transition |
| キーワード |
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主題Scheme |
Other |
|
主題 |
Critical gel point |
| キーワード |
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主題Scheme |
Other |
|
主題 |
Critical exponent |
| キーワード |
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主題Scheme |
Other |
|
主題 |
SiO2 suspension |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_1843 |
|
資源タイプ |
other |
| 著者 |
UEMATSU, Hideyuki
AOKI, Yuji
SUGIMOTO, Masataka
KOYAMA, Kiyohito
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| 抄録 |
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内容記述タイプ |
Abstract |
|
内容記述 |
Large deformation, nonlinear stress relaxation modulus G(t,) was examined for the SiO2 suspensions in a blend of acrylic polymer (AP) and epoxy (EP) with various SiO2 volume fractions () at various temperatures (T). The AP/EP contained 70 vol% of EP. At 30 vol%, the SiO2/(AP/EP) suspensions behaved as a viscoelastic liquid, and the time-strain separability, G(t,) G(t)h(), was applicable at long time. The h() of the suspensions was more strongly dependent on than that of the matrix (AP/EP). At = 35 vol% and T = 100oC, and 40 vol%, the time-strain separability was not applicable. The suspensions exhibited a critical gel behavior at = 35 vol% and T = 100C characterized with a power-law relationship between G(t) and t; G(t) tn. The relaxation exponent n was estimated to be about 0.45, which was in good agreement with the result of linear dynamic viscoelasticity reported previously. G(t,) also could be approximately expressed by the relation G(t,) tn at 40 vol%. The exponent n increased with increasing . This nonlinear stress relaxation behavior is attributable to strain-induced disruption of the network structure formed by the SiO2 particles therein. |
| 書誌情報 |
Rheologica Acta
巻 49,
p. 1187-1196,
発行日 2010
|
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
354511 |
| 書誌レコードID |
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識別子タイプ |
NCID |
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関連識別子 |
TD00006655 |
| 著者版フラグ |
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出版タイプ |
AO |
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出版タイプResource |
http://purl.org/coar/version/c_b1a7d7d4d402bcce |
BD00006655_001.pdf (528.3 kB)
