| 聚硫密封胶的固化及其热老化性能研究 |
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| 引用本文： | 李金锋,张启龙,徐意,杨辉. 聚硫密封胶的固化及其热老化性能研究[J]. 新型建筑材料, 2011, 0(7) |
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| 作者姓名： | 李金锋 张启龙 徐意 杨辉 |
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| 作者单位： | 浙江大学材料科学与工程系,表面与结构改性无机功能材料教育部工程研究中心,浙江,杭州,310027 |
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| 基金项目： | "十一五"国家科技支撑计划项目 |
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| 摘 要： | 研究基膏与硫化膏的配比、促进剂二苯胍对聚硫密封胶的固化时间和力学性能的影响.结果发现,基膏与硫化膏的配比为100/12时,密封胶能完全固化;基膏与硫化膏的配比为100/8时,密封胶具有最佳的力学性能,断裂伸长率和拉伸强度分别为437%和2.65 MPa;添加二苯胍能促进密封胶的固化过程;100℃热老化7d会降低聚硫密封胶的硬度,并提高其拉伸强度和断裂伸长率.
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| 关 键 词： | 聚硫密封胶 基膏 硫化膏 固化时间 力学性能 热老化 |
Study on the curing and thermal aging properties of polysulfide sealent |
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| LI Jinfeng,ZHANG Qilong,XU Yi,YANG Hui. Study on the curing and thermal aging properties of polysulfide sealent[J]. New Building Materials, 2011, 0(7) |
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| Authors: | LI Jinfeng ZHANG Qilong XU Yi YANG Hui |
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| Affiliation: | LI Jinfeng,ZHANG Qilong,XU Yi,YANG Hui (Department of Materials Science and Engineering,Engineering Research Center of the Education Ministry for the Surface and Structure Modification of Inorganic Functional Materials,Zhejiang University,Hangzhou 310027,Zhejiang,China) |
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| Abstract: | The effects of the ratio of main agent/curing agents and accelerator diphenyl guanidine on the curing time and mechanical properties of polysulfide have been studied.The results show that polysulfide can completely cured as the ratio of main agent/curing agents is 100/12.And polysulfide presents best mechanical properties when the ratio of main agent/curing agents is 100/8,and the tensile strength and elongation at break is 2.65 MPa and 437%,respectively.The addition of diphenyl guanidine can accelerate the... |
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| Keywords: | polysulfide sealant base agent curing agent curing time mechanical properties thermal aging |
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