Rapid evaluation for relative molecular mass and distribution of polyethylene
A method for rapid calculating molecular mass and molecular mass distribution with melt flow rate was established respectively through the theoretical derivation and model fitting on the basis of the analysis of 17 polyethylene resins produced by different processes and catalysts at home and abroad,by which number average molecular weight was calculated.It has been verified that the accuracy of the method can make up the deficiencies of gel permeation chromatograph,and it is beneficial to accurately control the product quality during the operation of the plant and improve the efficiency of new product development.
polyethylenerelative molecular mass and its distributiongel permeation chromatographymelt flow rate
NETL
NSTL
万方数据
维普
