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基于高密度聚乙烯和塑化粉的混合物的表征
Maria Daniela Stelescu1, Ovidiu-Cristian Oprea2,3, Doina Constantinescu4
1Division Leather and Footwear Research Institute, National Research & Development Institute for Textiles and Leather, 93 Ion Minulescu St., 031215 Bucharest, Romania.
Polymers
|November 9, 2024
概括
这项研究开发了高密度聚乙烯 (HDPE) 和可塑化粉的兼容混合物,增强了HDPE的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
背景情况:
- 高密度聚乙烯 (HDPE) 是一种广泛使用的热塑性塑料.
- 塑化粉提供了一种生物降解的替代品,但在混合物兼容性和防水性方面面临挑战.
- 开发有效的兼容化策略对于创建先进的聚合物复合材料至关重要.
研究的目的:
- 创建和描述高密度聚乙烯 (HDPE) 和可塑化粉的新型混合物.
- 为了评估一个兼容剂 (聚乙烯-移植-雄性无水化物) 对混合物特性的影响.
- 评估开发的混合物的热,机械和防水性能.
主要方法:
- 混合物使用内部混合器 (Brabender Plasti-Corder) 在 160 °C 准备.
- 样品通过压缩成型形成.
- 描述包括热分析 (结晶度),扫描电子显微镜 (SEM),硬度,抗拉强度,Charpy冲击强度和水/多烯浸泡试验.
主要成果:
- 添加塑化粉增加了HDPE的结晶度.
- SEM证实了HDPE矩阵内可塑化粉的良好分散,表明有效的兼容性.
- 混合物表现出高硬度 (62-65°ShD),良好的抗拉强度 (14.88-17.02 N/mm2),以及显著的冲击强度.
- 与不兼容样品相比,兼容混合物在室温下表现出优异的耐水性 (质量变化<1%,水吸收<1.7%),在80°C时稳定性得到改善.
结论:
- 开发的HDPE/塑化粉混合物,特别是聚乙烯-移植-雄性无水化物混合物,显示出增强的兼容性和机械性能.
- 添加塑化粉对HDPE的结晶行为产生了积极的影响.
- 这些兼容混合物为创造可持续和高性能聚合物材料提供了有前途的途径,具有更好的防水性能.
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