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:西安市雁塔北路中段58號
  • 郵編:710054
  • 電話:029-85583183
  • 傳真:029-85583183
  • Email:likanshe@xust.edu.cn
當前位置:> 首頁 > 論文著作 > 正文
Synthesis of the complex of lanthanum (III) with N-(2-amino ethyl) maleamic acid radical and its application to PVC as thermal stabilizer
作者:李苗,梁耀東,李侃社等
關鍵字:N-(2-amino ethyl) maleamic acid radical;Lanthanum (III); Polyvinyl chloride (PVC); Heat stabilizer; Thermogravimetric analysis (TGA)
論文來源:期刊
具體來源:Polymer Degradation and Stability
發表時間:2016年

The complex (LaL3) of lanthanum (III) with N-(2-amino ethyl) maleamic acid radical (L) was synthesized and characterized by Fourier infrared spectrum (FT-IR), elemental analysis and melting point measure-ments. The complex LaL3 was a chelate, in which lanthanum (III) ion was coordinated with the carboxylate oxygen and amide nitrogen atoms of N-(2-amino ethyl) maleamic acid radical (L). The stabilization effect of LaL3 as a thermal stabilizer on polyvinyl chloride (PVC) was evaluated by static thermal stability test, ultravioletevisible spectrum (UVevis), FT-IR and thermogravimetric analysis (TGA). The results showed that the addition of LaL3 as thermal stabilizer could signi?cantly enhance static stability time of PVC. Compared with the TG of pure PVC and LaL3/PVC, within the range of 200~300oC, the degradation rate of pure PVC was signi?cantly accelerated, whereas the degradation rate of the PVC added LaL3 stabilizer decreased obviously. The stabilizing ef?ciency of PVC improved by the addition of LaL3 is partially attributed by the formation of coordinate bonds between lanthanum (III) and

chloride atoms in PVC main chain.

主站蜘蛛池模板: 甘南县| 永泰县| 台中市| 奈曼旗| 富民县| 县级市| 大石桥市| 卢龙县| 浦城县| 江源县| 冕宁县| 瓦房店市| 寿宁县| 右玉县| 上饶县| 富顺县| 阿勒泰市| 介休市| 东城区| 龙江县| 安新县| 沅江市| 呈贡县| 阳新县| 易门县| 昆明市| 定陶县| 浦城县| 安国市| 涿鹿县| 富源县| 莱西市| 河南省| 临汾市| 修文县| 饶平县| 京山县| 高安市| 盘锦市| 香河县| 乌鲁木齐市|