私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

當(dāng)前位置:> 首頁(yè) > 論文著作 > 正文
(JMCA) Readily Recyclable, High-performance Thermosetting Materials based on a Lignin-derived Spiro Diacetal Trigger
作者:Songqi Ma*, Jingjing Wei, Zhen Jia, Tao Yu, Wangchao Yuan, Qiong Li, Sheng Wang, Shusen You, Ren Liu, Jin Zhu*
關(guān)鍵字:Thermosets, carbon fiber, coatings, degradable polymers, degradable thermosets, recylable carbon fiber composites
論文來(lái)源:期刊
具體來(lái)源:Journal of Materials Chemistry A
發(fā)表時(shí)間:2019年

Conventional thermosets, widely used in composites, coatings, electronic packing materials, etc., are typically made of non-sustainable fossil resources and cannot be recycled in mild conditions. Degradable thermosets are promising alternatives, while combining readily degradability and high performance is a challenge. In this paper, for the first time, spiro diacetal structure was utilized to bring about readily recyclable thermosetting materials with high performance. Renewable bioresources lignin derived vanillin was used to produce a rigid spiro diacetal trigger and further built into three thermosets. Among them, a spiro diacetal epoxy resin was systematically investigated and was proved to be readily degradable under mild acidic conditions while kept stable under neutral or basic conditions and showed outstanding thermal stability. Meanwhile, its glass transition temperature, tensile strength, modulus, elongation at break are comparable to or even better than those of conventional bisphenol A epoxy resin. Moreover, facilely recyclable carbon fiber reinforced composites and convenient-removal coatings were achieved from this epoxy resin accompanying with excellent performances.



主站蜘蛛池模板: 许昌县| 永定县| 贵港市| 麦盖提县| 天峻县| 天等县| 英吉沙县| 福安市| 高邮市| 崇仁县| 阳信县| 德惠市| 贵定县| 丽江市| 雅江县| 唐山市| 金门县| 松潘县| 长子县| 辉县市| 丘北县| 松潘县| 贵阳市| 榆社县| 九台市| 岐山县| 都昌县| 锡林郭勒盟| 阳山县| 河北区| 梁山县| 晴隆县| 三江| 满洲里市| 红安县| 和龙市| 万盛区| 六枝特区| 嘉鱼县| 正安县| 九寨沟县|