ELASTOMER BASED ON LIQUID HYDROXYL-TERMINATED POLYBUTADIENE Ⅱ.INFLUENCE OF MOLECULAR WEIGHT DISTRIBUTION OF LIQUID HYDROXYL-TERMINATED POLYBUTADIENE ON THE MECHANICAL PROPERTIES OF ELASTOMER

Chinese Journal of Applied Chemistry ›› 1988, Vol. 0 ›› Issue (2): 67-70.

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ELASTOMER BASED ON LIQUID HYDROXYL-TERMINATED POLYBUTADIENE Ⅱ.INFLUENCE OF MOLECULAR WEIGHT DISTRIBUTION OF LIQUID HYDROXYL-TERMINATED POLYBUTADIENE ON THE MECHANICAL PROPERTIES OF ELASTOMER

Liu Wenzhong, Zhang Xitian, Zhang Qingyu

Changchun Institute of Applied Chemistry, Acacemia Sinica

Received:1987-03-31 Revised:1987-07-03 Published:1988-04-10 Online:1988-04-10

Abstract

Abstract: The influence of molecular weight distribution of hydroxyl-terminated liquid polybutadiene(HTPB) on the mechanical properties of the elastomer obtained from HTPB, N, N-bis(2-hydroxypropyl) aniline and toluene diisocyanate has been investigated. The results showed that molecular weight distribution of HTPB had no marked effect on the tensile strength, 100% modulus and hardness of the elastomter. However, the permanent set of the elastomer increased obviously, when the polydispersity index of HTPB changed from 1.6 to 2.1.

Key words: Polyurethane, Elastomer, Butadiene oligomer, Molecular weight, distribution, Mechanical property

Liu Wenzhong, Zhang Xitian, Zhang Qingyu . ELASTOMER BASED ON LIQUID HYDROXYL-TERMINATED POLYBUTADIENE Ⅱ.INFLUENCE OF MOLECULAR WEIGHT DISTRIBUTION OF LIQUID HYDROXYL-TERMINATED POLYBUTADIENE ON THE MECHANICAL PROPERTIES OF ELASTOMER[J]. Chinese Journal of Applied Chemistry, 1988, 0(2): 67-70.

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ELASTOMER BASED ON LIQUID HYDROXYL-TERMINATED POLYBUTADIENE Ⅱ.INFLUENCE OF MOLECULAR WEIGHT DISTRIBUTION OF LIQUID HYDROXYL-TERMINATED POLYBUTADIENE ON THE MECHANICAL PROPERTIES OF ELASTOMER

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