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

相關鏈接
聯系方式
  • 通信地址:湖南長沙岳麓區麓山南路湖南大學材料科學與工程學院
  • 郵編:410082
  • 電話:無
  • 傳真:工程實驗大樓343
  • Email:wangjianfeng@hnu.edu.cn
當前位置:> 首頁 > 論文著作 > 正文
Highly transparent and tough clay/poly(vinyl alcohol) artificial nacre
作者:Jinrong Wang, Jianfeng Wang,* Ying Zhu, Lei Jiang
關鍵字:clay, layered structure, mechanical property, self-assembly
論文來源:期刊
具體來源:Acta Polymerica Sinica
發表時間:2015年


Inspired by the relationship between microstructure and mechanical properties of natural nacre, clay/poly(vinyl alcohol) artificial nacre was prepared through evaporation-induced assembly of poly(vinyl alcohol)-coated clay nanoplatelets. The clay loading in the artificial nacre is determined as 52 wt% by thermogravimetric analysis. A well-defined layered structure is proved by scanning electronic microscopy, transmission electronic microscopy and X-ray diffraction. FTIR proves that hydrogen bond is formed between clay and PVA. Tensile test results show that the strength of the artificial nacre is about 90.2 ± 8.0 MPa, comparable to that of natural nacre (80-135 MPa). Importantly, the strain at break and tensile toughness reach 14.7 ± 2.3% and 10.6 ± 3.0 MJ/m3, respectively, which are much higher than those of the reported bio-inspired layered montmorillonite/polymer nanocomposites. The improved strength is attributed to high clay loading, ordered layered structure and strong interfacial adhesion. Interestingly, appropriate aspect ratio of clay platelets enables the artificial nacre to fail in the form of clay platelet pull-out and thus leads to high toughness. In addition, the artificial nacre is transparent because of reduced light scattering, arising from ordered layered structure and small diameter of the used clay. The transparency of the artificial nacre is more than 90%.


主站蜘蛛池模板: 襄汾县| 遂溪县| 凤城市| 常熟市| 抚松县| 平阴县| 西贡区| 旌德县| 漠河县| 九寨沟县| 凤凰县| 芷江| 安吉县| 鞍山市| 新巴尔虎左旗| 湟中县| 革吉县| 库尔勒市| 桓仁| 汽车| 攀枝花市| 江西省| 阳泉市| 专栏| 察隅县| 南丰县| 仪征市| 遵化市| 内江市| 南城县| 香港 | 方城县| 金溪县| 河东区| 新龙县| 武陟县| 平阳县| 陇西县| 恩施市| 廊坊市| 天柱县|