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 > 論文著作 > 正文
Synthesis and Properties of Bio-based Shape Memory Epoxy Resin from Rosin Acid
作者:T.T. Li, X.Q. Liu*, Y.H. Jiang, S.Q. Ma*, J. Zhu
關(guān)鍵字:rosin, isosorbide, shape memory epoxy resin
論文來源:期刊
具體來源:Iranian polymer journal
發(fā)表時(shí)間:2016年

A bio-based shape memory epoxy resin was synthesized from rosin in order to achieve the sustainability of shape memory epoxy resin, and its chemical structure was determined by FTIR and 1H NMR. For comparison, a petroleum-based epoxy, diglycidyl ester of terephthalic acid (DGT) which has one benzene ring, was also synthesized. The properties including thermal and mechanical properties as well as shape memory properties of the epoxy resins cured with poly (propylene glycol)-bis (2-aminopropyl ether) (D230) were studied by differential scanning calorimeter (DSC), dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), tensile test and U-type shape memory test. The effect of the stoichiometric ratio nDGEAPA/nDGT on the properties was investigated as well. The thermal and mechanical properties including thermal stability, glass transition temperature, tensile strength and modulus of the cured epoxy systems were found to be increased with the increase of DGEAPA content and the cured neat rosin-based epoxy system exhibited the highest properties. Both the cured rosin-based epoxy and the cured DGEAPA showed great shape memory performance. Meanwhile, the rosin ring structure made the cured rosin-based epoxy systems own excellent shape recovery fixity while a bit lower shape recovery and shape recovery rate relative to the cured neat DGT system. Therefore, the rosin-based epoxy resin has a great potential in the shape memory material applications.

主站蜘蛛池模板: 恩施市| 盐山县| 庄河市| 西吉县| 闸北区| 定边县| 呼图壁县| 志丹县| 西城区| 浙江省| 祁门县| 南雄市| 金秀| 大渡口区| 邢台县| 台前县| 冕宁县| 清河县| 耿马| 中方县| 宁化县| 登封市| 公安县| 卢氏县| 垦利县| 中阳县| 汝州市| 华蓥市| 讷河市| 宁波市| 隆德县| 宜兴市| 永登县| 闻喜县| 青铜峡市| 炉霍县| 中阳县| 宜城市| 淄博市| 洛宁县| 木里|