Permanently cross-linked networks confer chemical and mechanical stability to cross-linked elastomers, making their recycling a serious environmental issue. Recyclable covalently crosslinked elastomers have recently been developed by building covalently adaptive networks in elastomers. Here, we demonstrate a simple and general strategy to construct covalent adaptable networks with mechanical robustness, self-healing, shape memory, and recyclability. The dynamic boronic ester linkage between silica and epoxidized natural rubber endows the material with high stretchability and high tensile strength. The boronic ester bond exchange enables the cross-linked network to achieve self-healing, remodeling, and shape memory through network structural rearrangement. The materials can be recovered by hot pressing or dissolution, and the structure of the sample recovered by dissolution remains basically unchanged. Furthermore, a self-healing flexible electronic device can be fabricated by spraying conductive graphite on the surface of these elastomers. Considering that this interfacial boronic ester bond cross-linking can be easily achieved between different commercial epoxy polymers and hydroxyl-rich nanoparticles, we believe that this work has great potential in the development of rubber-based vitrimer elastomers and flexible wearable devices.

永久交联网络赋予交联弹性体化学和机械稳定性，使其回收成为一个严重的环境问题。最近通过在弹性体中构建共价自适应网络开发了可回收的共价交联弹性体。在这里，我们展示了一种简单而通用的策略来构建具有机械鲁棒性、自我修复、形状记忆和可回收性的共价适应性网络。二氧化硅和环氧化天然橡胶之间的动态硼酸酯键赋予材料高拉伸性和高拉伸强度。硼酸酯键交换使交联网络通过网络结构重排实现自我修复、重塑和形状记忆。物料可通过热压或溶解回收，溶解回收的样品结构基本保持不变。此外，可以通过在这些弹性体表面喷涂导电石墨来制造自愈柔性电子器件。考虑到这种界面硼酸酯键交联可以很容易地在不同的商业环氧聚合物和富含羟基的纳米颗粒之间实现，我们相信这项工作在开发橡胶基 vitrimer 弹性体和柔性可穿戴设备方面具有巨大的潜力。