文章摘要
Effect of PCL/ PTMG Blending Ratio on Properties of MPU
Received:April 22, 2022  Revised:April 22, 2022
DOI：10.12136/j.issn.1000-890X.2023.11.0876
Key Words: PCL；PTMG；MPU；tensile property；wear resistance
Author NameAffiliationE-mail
DONG Zihui Qingdao University of Science and Technology 1064622195@qq.com 
LI Chuang Qingdao University of Science and Technology  
SU Weiming Qingdao University of Science and Technology  
Liu Jinchun* Qingdao University of Science and Technology liujinchun2001@163. com 
Hits: 311
Download times: 1469
Abstract:
      Using polycaprolactone glycol（PCL） and polytetramethylene ether glycol（PTMG） as the soft segment monomer and diphenylmethane diisocyanate as the hard segment monomer，a millable polyurethane（MPU） was synthesized.Keeping the content of hard segment unchanged，the effects of PCL/PTMG blending ratios（mass ratios） on properties of MPU were studied.The results showed that，with the increase of PTMG dosage，the glass transition temperature of MPU decreased，the tensile strength，elongation at break and tear strength of MPU vulcanizate increased firstly and then decreased，the DIN abrasion increased，and after thermo-oxidative aging，the tensile strength and elongation at break decreased significantly.When PCL/PTMG blending ratio was 90/10，the elongation at break and tear strength of MPU vulcanizate reached the maximum，which were 518% and 66 kN·m-1，respectively.The DIN abrasion of the MPU vulcanizate with PCL only was the smallest，0.014 4 cm3.
View Full Text   View/Add Comment  Download reader
Close