Share Email Print
cover

Proceedings Paper

Effect of chain extender on properties of silicone rubber sealant
Author(s): Jiesheng Liu; Shaopeng Wu
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The room-temperature vulcanizing silicone rubber sealant was prepared with chain extender. The effect of chain extender on the properties of silicone rubber sealant was discussed. The composite samples with chain extender were investigated from the aspects of tack-free time, cross-linkage density, hardness (penetration number) and adhesive strength with the concrete slab. It was found that the adding of the chain extender effectively makes the molecular chain length increase and causes the mechanical properties improvement. In addition, the increase in the amount of the chain extender reduces the cross-linkage density and hardness of silicone rubber sealant, which is accompanied with a decrease in the tack-free time. Adhesive strength is one of the most important requirements for sealant. The effect of chain extender on the adhesive strength was also investigated in this study. It was found that the increase in the amount of the chain extender makes the adhesive strength between the sealant and the concrete slab decrease.

Paper Details

Date Published: 15 April 2010
PDF: 7 pages
Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 75223K (15 April 2010); doi: 10.1117/12.851543
Show Author Affiliations
Jiesheng Liu, Wuhan Univ. of Technology (China)
Shaopeng Wu, Wuhan Univ. of Technology (China)


Published in SPIE Proceedings Vol. 7522:
Fourth International Conference on Experimental Mechanics
Chenggen Quan; Kemao Qian; Anand Krishna Asundi; Fook Siong Chau, Editor(s)

© SPIE. Terms of Use
Back to Top