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

Links
Contact Info.
  • Address:江蘇省揚州市四望亭路180號
  • Zip:225002
  • Tel:0514-87979062
  • Fax:0514-87979244
  • Email:lxyzhangm@yzu.edu.cn
Current Location :> Home > Publications > Text
Lanthanum containing polymer''s modification to PP
writer:Dai, SJ(*),Zhang, M
keywords:organic polymer,rare earth polymer,acrylic lanthanum,modification
source:期刊
specific source:Journal of Rare Earths
Issue time:2004年
Polypropylene (PP) ''s low impact strength limits its usages. Adding some a rare earth polymer can enhance PP''s tensile strength and impact strength. Acrylic lanthanum was prepared by the reaction between lanthanum oxide and acrylic acid. The IR spectrum prove that and optimum reacting conditions are that the bulk ratio of La(AA)3 and MMA is not less than one and temperature is about 80℃. Lanthanum containing Polymer were added into PP. When percent of addition only was 3% , strength were enhanced 10% , and impact strength 40%. SEM shows the compatibility of rare earth polymer and PP; lanthanum containing polymer can form physical crosslinking between PP''s molecules, then every particle''s surface connect with several PP molecules and the PP mechanical property were enhanced.