@article{ZHANG2025, 
author = {ZhiWei ZHANG and XinWei TIAN and Ming YAO and ShanShan XING and Gang XIE and Jun ZHANG},
title = {Effect of silica micro-powder dosage on the performance of organosilicon plastic joint sealing materials},
year = {2025},
journal = {Journal of Beijing University of Chemical Technology (Natural Science Edition)},
volume = {52},
number = {2},
pages = {41-46},
keywords = {silica micro-powder, organosilicon, panel dam, dosage, sealing},
url = {https://www.sciopen.com/article/10.13543/j.bhxbzr.2025.02.005},
doi = {10.13543/j.bhxbzr.2025.02.005},
abstract = {In order to meet the sealing requirements for the joints in concrete panels in severely cold areas, we have developed an organosilicon plastic joint sealing material with excellent low-temperature resistance, using silicone resin as the raw material. The effect of silica micro-powder dosage on the performance of the organosilicon plastic joint sealing material was studied. The organosilicon plastic joint sealing material had the best comprehensive performance when the silica micro-powder dosage was 550 parts (based on 100 parts of silicone rubber). The material showed a flow-stopping length of 165 mm and a sagging degree of 1.3 mm. At a temperature of -40 ℃, the material exhibited a pinning degree greater than 200 (0.1 mm) and an elongation at break larger than 1000%. Importantly, no bond failure at the interface with the concrete was observed during the stretching process. The preparation of this material solves the problem of traditional materials hardening at -40 ℃ and provides -a new joint stopping and sealing material for the construction of concrete panel dams in alpine areas, both domestically and internationally.}
}