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| 大豆油在EPDM止水带中的应用研究 |
| Application of soybean oil in EPDM waterstop |
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| DOI： |
| 中文关键词: 大豆油 止水带 环保软化剂 |
| 英文关键词:soybean oil waterstop environment-friendly softener |
| 基金项目:衡水学院校级课题（2018LX24） |
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| 中文摘要: |
| 以大豆油取代传统软化剂，通过模压工艺制备了食品级的三元乙丙橡胶（EPDM）止水带。考察了止水带的加工性能及物理机械性能，并与加入石蜡油的EPDM止水带进行性能及成本的比较。结果表明:大豆油少量（0~15 g）加入，反增塑作用明显，大量（15~30 g）加入后，增塑作用明显;当大豆油用量为20 g时，EPDM止水带的SHORE A硬度为64，拉伸强度为24.2 MPa，撕裂强度为36 kN/m，扯断伸长率为582%，脆性温度为-55 ℃，23 ℃×168 h压缩永久变形为18%，70 ℃×24 h压缩永久变形为29%;经热空气、臭氧、Ca(OH)2饱和溶液老化测试后，EPDM止水带性能指标仍合格，加入大豆油可以降低EPDM止水带的成本。 |
| 英文摘要: |
| A food-grade ethylene-propylene-diene monomer(EPDM) waterstop was prepared by die pressing process using environment-friendly soybean oil instead of traditional softener. The processing property, physical and mechanical properties of the waterstop were investigated. The performance and price of the presented waterstop were compared with EPDM waterstop containing paraffin oil. The results showed that a small amount of soybean oil(0-15 g) was added, and the anti-plastic effect was obvious. After a large amout of soybean oil(15-30 g) was added, the plastic effect was obvious. When the amount of soybean oil was 20 g, the SHORE A hardness, tensile strength, tear strength, fracture elongation, brittle temperature, and compression set value at 23 ℃ for 168 h and at 70 ℃ for 24 h were 64, 24.2 MPa, 36 kN/m, 582%,-55 ℃, 18% and 29%, respectively. After the aging test of hot air, ozone and Ca(OH)2 saturated solution, the performance indexes were still qualified. Furthermore, the addition of soybean oil could reduce the production cost of EPDM waterstop. |
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