Room Temperature Self-Healing Methyl Phenyl Silicone Rubbers Based on the Metal-Ligand Cross-Link: Synthesis and Characterization

被引:28
作者
Yu, Dajiang [1 ]
Zhao, Xinxin [1 ]
Zhou, Chuanjian [1 ]
Zhang, Chen [1 ]
Zhao, Shigui [1 ]
机构
[1] Shandong Univ, Sch Mat Sci & Engn, Key Lab Special Funct Aggregated Mat, Minist Educ, Jinan 250100, Peoples R China
关键词
Schiff-base; self-healing; silicone rubbers; POLYMERS; COMPLEXES;
D O I
10.1002/macp.201600519
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Novel self-healing silicone rubbers are prepared by a two-step procedure: aminopropyl methyl phenyl polysiloxanes is first reacted with salicylaldehyde and then with copper acetate. The reversible nature of the metal-ligand coordination interaction between polysiloxanes with pendent Schiff-base groups and Cu2+ has endowed silicone rubbers with superior self-healing properties. As compared with other self-healing silicone rubbers based on hydrogen bonds or Diels-Alder reaction, this cross-linked system shows high healing power. The materials are cut into two parts and put together in a mold for 1 h at 30 degrees C, observing a macroscopic healing and a strength recovery up to 87.0%.
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页数:6
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