Investigation of moisture effects on interfacial properties of an epoxy matrix composite by dynamic mechanical analysis /
addition, composites with poorer interfacial bond
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1994.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | addition, composites with poorer interfacial bond adhesion, thus improving stress transfer between matrix and reinforcement. The silane also reduces the mobility and smaller tans at Tg for silane-treated composite before the production of the composites. The plain epoxy bond strength leads to more interfacial cracks or voids, by about 15,,C, and reduces tans at Tg. These are all characteristic of plasticization of the matrix. The compared to corresponding properties for the untreated composite. Water seems to weaken the interfacial strength composites in a wet environment. The objective of this study composites, including glassy and rubbery moduli and the loss critical to the retention of the mechanical properties of the different interfacial structures are created by treating or effects of water on composites strongly depend on the hypothesis was supported by the greater E', higher Ea. In general, the measured properties reflect the effect of interfacial structure of the composites. The interphase interfacial structure, composites with different interfacial interphase. For the plain matrix, moisture reduces Tg, is to investigate the effect of moisture on the interfacial matrix was also tested. The sorption behavior of the mechanical properties obtained through dynamic mechanical moisture on the properties of matrix, composites, and not treating the glass beads with a silane coupling agent of composites since water reduces the rubbery modulus of of the epoxy network near the glass surface. This of the water uptake periodically. properties of glass bead-epoxy composites by measuring reduces the interfacial bond strength less for silane- relationship between dynamic mechanical properties and specimens was monitored by recording the percent weight gain strength showed larger "additional" tan8 peaks next to structures were tested and the results were compared. The tangent (tanb) were measured. In order to characterize the testing. The viscoelastic material properties of glass bead- the (X-transition. If we assume that poor interfacial the composites but not of the plain matrix. Water the extent of cracking. The interfacial properties of polymer matrix composites are then the tans spectrum may be useful for characterizing treated composites than for untreated composites. In with silane coupling agent provides better interfacial |
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| Item Description: | "Major subject: Chemical Engineering". Vita. |
| Physical Description: | xiii, 136 leaves : illustrations ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references. |