在工业应用中暴露于紫外线辐射的TPU/PP混合物的稳定性
Carlos Vargas-Isaza1, Jose A Tamayo1, Libia M Baena1
1Grupo de Investigación Calidad, Metrología y Producción, Instituto Tecnológico Metropolitano, Medellin 050034, Colombia.
Polymers
|July 12, 2025
概括
将聚乙烯主批添加到热塑性聚氨 (TPU) 和聚烯混合物中,可以有效地保护它们免受紫外线辐射损伤. 这项研究表明,添加剂如何减轻暴露在恶劣环境条件下的聚合物的有害影响.
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
背景情况:
- 热塑性聚氨 (TPU) 在各种行业中使用,但在环境压力下降解.
- 紫外线辐射是导致聚合物显著降解的主要因素.
- 保护聚合物免受紫外线损伤对于延长材料寿命和性能至关重要.
研究的目的:
- 评估聚乙烯主批 (MB) 作为热塑性聚氨 (TPU) 的紫外线辐射抑制剂.
- 研究将高性能TPU与商品聚烯混合.
- 评估添加剂对聚合物混合物的保护作用,以防止紫外线引起的降解.
主要方法:
- 用商业聚乙烯主批量制备TPU和聚烯混合物.
- 热重力测量分析 (TGA) 用于评估热稳定性.
- 红外 (IR) 和电子显微镜用于结构分析.
- 机械测试 (硬度,抗拉强度).
- 加速衰老试验 (320小时的紫外线照射),然后进行扫描电子显微镜 (SEM).
主要成果:
- 加上足够数量的添加剂的聚合物混合物在暴露于紫外线后降低了降解.
- 热重力测量分析表明,受保护样本的热稳定性得到改善.
- 在添加剂的存在下,硬度和抗拉强度等机械性能更好地保持.
- 显微镜分析证实,紫外线暴露的含有添加剂的混合物表面损伤减少.
结论:
- 聚乙烯主可以有效地抑制热塑性聚氨和聚烯混合物的紫外线辐射诱导的降解.
- 添加剂的战略性整合是一种可行的方法,可以增强聚合物对环境压力因素的耐用性.
- 这项研究提供了一种实际的方法,以提高聚合物材料在苛刻的应用中的寿命和性能.
相关概念视频
Types of Step-Growth Polymers: Polyesters
2.3K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
2.3K
Polymer Classification: Architecture
3.0K
Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
3.0K


