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論文
【年度】104
年研發成果
【項目】
論文
【領域】
關鍵技術科專
【類別】
生醫材化
| 計畫名稱 | 化工產業高值化系統技術與應用發展計畫 | | 論文名稱 | 具高Tg和低介電之磷系含甲基丙炔基醚基Benzoxazine環氧熱固性樹酯 | | 論文類型 | 海報展示 | | 發表處 | 2015高分子年會(PC-III-B003) | | 發表人 | 林慶炫 | | 發表日期 | 2015/04/20 | | 國家 | 國內 | | 內容摘要 | A propargyl ether-containing benzoxazine (4) was prepared from a potassium carbonate-catalyzed nucleophilic substitution of propargyl bromide and a phenolic OH-containing benzoxazine (3), which was prepared from 1-(4-hydroxyphenyl)- 1-(4-aminophenyl)-1-(6-oxido-6H -dibenz <1,2> oxaphosphorin-6-yl)ethane (1) by a three-step procedure. The curing reactions of (4) were monitored by IR and DSC. A reaction mechanism was proposed based on the observation. Benzoxazines (3) and (4) were applied as epoxy curing agents. The microstructure and the structure-property relationship of the resulting thermosets are discussed. The double-strand structure in (4)-cured epoxy thermosets afforded higher crosslinking density, and led to higher thermal properties. In addition, the (4)-cured epoxy thermosets possess half the amount of highly polar hydroxyl groups than those of the (3)-cured epoxy thermosets, resulting in a lower dielectric constant, dissipation factor, and water absorption. |
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