二氧化 (TiO2) 对低密度聚乙烯的物理化学性能的影响
Peter P Ndibewu1, Tina E Lefakane1,2, Taki E Netshiozwi2
1Department of Chemistry, Tshwane University of Technology (TUT), Arcadia Campus, Arcadia, P.O. Box 56208, Pretoria 0001, South Africa.
Polymers
|October 16, 2024
概括
这项研究探讨了使用二氧化 (TiO2) 合低密度聚乙烯 (LDPE) 作为防护服的危险化学品. 5%的TiO2合的LDPE表现出最好的抗化学透性,即使在紫外线暴露后也是如此.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 对于危险的化学事件,急救人员需要先进的个人防护设备.
- 开发具有成本效益,耐用性和轻量级的保护材料至关重要.
研究的目的:
- 研究使用二氧化 (TiO2) 合低密度聚乙烯 (LDPE) 制造化学防护聚合物材料.
- 评估TiO2对LDPE在紫外线暴露前后物理化学性能的光催化作用.
- 评估防护服对2-chloroethyl乙烯硫化物 (CEES) 等有毒化学品的有效性.
主要方法:
- 用TiO2 (0,5,10,15%重量) 合的LDPE薄膜被挤出.
- 描述包括SEM-EDX,TEM,拉力测试,DSC-TGA和透研究.
- 在暴露于紫外线 (UV) 光线之前和之后进行了测试.
主要成果:
- 尼特LDPE显示,由于聚合物矩阵降解,紫外线暴露后CEES透时间减少.
- 2化膜表现出改善的物理性能和增强的化学耐药性,随着化度的增加.
- 5%的TiO2合膜在紫外线暴露前后都表现出优异的CEES透性.
结论:
- 二氧化增强了LDPE的物理化学特性,用于保护性应用.
- 5%的TiO2添加剂LDPE为化学防护服提供了一个有希望的,具有成本效益的材料.
- 在某些情况下,对TiO2的光催化激活是最佳性能所必需的,但5%的配方显示出固有的稳定性.
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