"Preparation of Mooney viscosity reference material for low cis-1,4-polybutadiene rubber"

Abstract

The low cis-1,4-polybutadiene rubber material that had been filtrated and passed the homogeneity and stability tests and conformed to requirements for the reference material, was jointly determined the value by several laboratories, and the results of determination were evaluated according to the data processing procedures of fixed value, including abnormal data judgment, data normal distribution test, equal precision test and uncertainty evaluation. The results showed that at a significant level of 0.01, the fixed value data of Mooney viscosity of low cis-1,4-polybutadiene rubber reference material in each laboratory had no suspicious value, were in normal distribution, and were of equal accuracy. The nominal value of ML(1+4) 100 ℃ of the refe-rence material was 33.5±0.8. This reference material could be widely used to calibrate Mooney viscometer, providing technical support for production control, product inspection, product trade and quality arbitration in synthetic rubber industry.

Keywords

• low cis-1
• 4-polybutadiene rubber
• mooney viscosity
• reference material
• preparation