| Autor: |
Byung Lae Rho, Jung Hoon Lee, Kyeong-sik Min, Seungkil Seo, Donghoon Lee, Won Ho Kim, Noori Lee, Sung Yun Kang |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Elastomers and Composites. 50:103-109 |
| ISSN: |
2092-9676 |
| Popis: |
In this study, epoxy/anhydride mixing ratio for the highly silica filled compounds with chromium (III) octoate catalyst was investigated at a low curing temperature (71°C for 40 hr) by evaluating the compressive strength with the weight ratio ranges from 0.3/1.0 to 1.0/1.0 of epoxy part (Part A)/anhydride part (Part B). In case of epoxy/anhydride com- pounds used surface unmodified silica by coupling agent, these compounds need excess anhydride unlike the weight ratio in the conventional epoxy/anhydride compounds. In curing behavior, the epoxy/anhydride compounds containing chromium (III) octoate showed high conversions at 71°C for 40 hr, even if a dipropylene glycol (DPG) was not used as a poly- merization initiator. Also, DPG leads to a poor epoxy network structure. In conclusion, the appropriate weight ratio of Part A/Part B of highly silica filled epoxy/anhydride compounds with chromium (III) octoate catalyst is 0.5/1.0 and the max- imum amounts of silica is 1470 phr of epoxy resin. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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