| 一种低模量、高断裂伸长率双组分聚氨酯密封胶的制备 |
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| 引用本文： | 李秀军,罗伟雄,张中华.一种低模量、高断裂伸长率双组分聚氨酯密封胶的制备[J].中国建筑防水,2020(2):14-17. |
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| 作者姓名： | 李秀军 罗伟雄 张中华 |
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| 作者单位： | 东莞市山力高分子材料科研有限公司 |
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| 摘 要： | 在分析各物料用量对密封胶性能影响的基础上,通过配方优化调整,制备了双组分聚氨酯密封胶产品。性能测试结果表明,改进配方后的聚氨酯密封胶,拉伸强度达到2.4 MPa、断裂伸长率达到1100%、质量损失率仅3%,满足标准中低模量、高断裂伸长率密封胶的性能要求。
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| 关 键 词： | 双组分聚氨酯密封胶 拉伸强度 断裂伸长率 拉伸模量 |
Preparation of Two-component Polyurethane Sealant with Low Modulus and High Elongation at Break |
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| Li Xiujun,Luo Weixiong,Zhang Zhonghua.Preparation of Two-component Polyurethane Sealant with Low Modulus and High Elongation at Break[J].China Building Waterproofing,2020(2):14-17. |
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| Authors: | Li Xiujun Luo Weixiong Zhang Zhonghua |
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| Affiliation: | (Dongguan Sanli Polymer Materials Scientific Research Co.,Ltd.,Dongguan,Guangdong 523130,China) |
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| Abstract: | Based on analysis of the influence of amount of each material on performance of sealant, through the optimization of the formulation, a two-component polyurethane sealant product is prepared. Performance test results show that the improved polyurethane sealant has a tensile strength of 2.4 MPa, elongation at break of 1 100% and mass loss rate of only 3%, which meet the standard performance requirements as sealant with medium and low modulus, high elongation at break. |
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| Keywords: | two-component polyurethane sealant tensile strength elongation at break tensile modulus |
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