Shi Junqi, Cao Chongjian, Zhang Lu, Quan Yiwu, Wang Qingjun, Xie Hongfeng
Key Laboratory of High Performance Polymer Materials & Technology of Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
Systems Engineering Research Institute, Beijing 100094, China.
Polymers (Basel). 2021 Apr 2;13(7):1126. doi: 10.3390/polym13071126.
A convenient, environment-friendly, and cost-effective method to keep anti-icing for a long time was highly desirable. Slippery lubricant layers were regarded to be effective and promising for anti-icing on different surfaces, but the drought-out of lubricants and the possible detriments to the environment were inevitable. By combining super-high molecular weight sodium polyacrylate (H-PAAS) with polyolefin through a one-pot method, a self-sustainable lubricating layer with extremely low ice adhesion of un-freezable water hydrogel was achieved at subzero conditions. The lubricant hydrogel layer could auto-spread and cover the surface of polyolefin after encountering supercooled water, frost, or ice. Due to the reduction of storage modulus in the interface, the ice adhesion of the specimen surfaces was far below 20 kPa, varying from 5.13 kPa to 18.95 kPa. Furthermore, the surfaces could preserve the fairly low adhesion after icing/de-icing cycles for over 15 times and thus exhibited sustainable durability. More importantly, this method could be introducing to various polymers and is of great promise for practical applications.
人们迫切需要一种方便、环保且经济高效的长期防冰方法。光滑的润滑层被认为对不同表面的防冰有效且具有前景，但润滑剂的干涸以及对环境可能造成的损害不可避免。通过一锅法将超高分子量聚丙烯酸钠（H-PAAS）与聚烯烃相结合，在零下条件下实现了具有极低冰附着力的不可冻结水凝胶的自维持润滑层。润滑剂水凝胶层在遇到过冷水、霜或冰后能够自动铺展并覆盖聚烯烃表面。由于界面处储能模量的降低，试样表面的冰附着力远低于20 kPa，在5.13 kPa至18.95 kPa之间变化。此外，表面在结冰/除冰循环超过15次后仍能保持相当低的附着力，因此具有可持续的耐久性。更重要的是，这种方法可以应用于各种聚合物，具有很大的实际应用前景。
