摘要
采用三嵌段聚合物(PPP)对酸化碳纳米管(MWNTs-COOH)进行改性,制备MWNTs-COOH/PPP无溶剂流体。采用流变仪研究其流变性能,采用差热扫描(DSC)研究不同制备方法对MWNTs-COOH/PPP/聚丙烯复合材料性能的影响。结果表明,无溶剂存在时,MWNTs-COOH/PPP复合物具有液体的特征,碳纳米管含量为27.37%。以MWNTs-COOH/PPP复合物作为增强材料,采用溶液法和机械法制备聚丙烯纳米复合材料,碳纳米管可以使聚丙烯的结晶度有一定程度提高。
Non-ionic solvent-free carbon nanotube nanofluids （NSCNN） were prepared using carboxylic MWNTs- coon and poly （ ethylene oxide）-block-poly （ propylene oxide）-block-poly （ ethylene oxide） （ PEO-b-PPO-b- PEO） via hydrogen bonding between the surface - OH or C= O groups and the hydroxy groups. It can be seen that NSCNN were used as reinforcing materials for PP to prepare nanocomposites through solution and mechanical method. Rotary rheometer was used to test the flow feature of the NSCNN. Copolymer is attached on the surface of MWNTs. The MWNTs content is 27.37 %. Storage modulus G＇ is smaller than the loss modulus G＂, indicating the NSCNN is liquid. MWNTs can enhance the crystalline degree of PP.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2013年第4期155-159,共5页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(51073129)
中科院北京分子科学国家实验室开放课题资助
关键词
无溶剂纳米流体
固-液转变
聚丙烯
结晶性
solvent-free nanofluids
solid-liquid behave
PP
crystalline degree
