Abstract
Elastomers play a vital role in many forthcoming advanced technologies in which their adhesive properties determine materials’ interface performance. Despite great success in improving the adhesive properties of elastomers, permanent adhesives tend to stick to the surfaces prematurely or result in poor contact depending on the installation method. Thus, elastomers with on-demand adhesion that is not limited to being triggered by UV light or heat, which may not be practical for scenarios that do not allow an additional external source, provide a solution to various challenges in conventional adhesive elastomers. Herein, we report a novel, ready-to-use, ultra high-strength, ductile adhesive elastomer with an on-demand adhesion feature that can be easily triggered by a compression force. The precursor is mainly composed of a capsule-separated, two-component curing system. After a force-trigger and curing process, the ductile adhesive elastomer exhibits a peel strength and a lap shear strength of 1.2 × 104 N m−1 and 7.8 × 103 kPa, respectively, which exceed the reported values for advanced ductile adhesive elastomers. The ultra-high adhesion force is attributed to the excellent surface contact of the liquid-like precursor and to the high elastic modulus of the cured elastomer that is reinforced by a two-phase design. Incorporation of such on-demand adhesion into an elastomer enables a controlled delay between installation and curing so that these can take place under their individual ideal conditions, effectively reducing the energy cost, preventing failures, and improving installation processes.
| Original language | English |
|---|---|
| Pages (from-to) | 969-977 |
| Number of pages | 9 |
| Journal | Materials Horizons |
| Volume | 11 |
| Issue number | 4 |
| DOIs | |
| State | Published - Dec 6 2023 |
Funding
This work was funded by the Advanced Building Construction Initiative under the Building Technologies Office of the U.S. Department of Energy (DOE), under contract no. DE-FOA-0002099. The National Natural Science Foundation of China (grant no. 52373275) supported contributions to the writing and editing of the manuscript, as well as a few experiments. This manuscript was authored by UT-Battelle, LLC under contract no. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains the publisher by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( https://energy.gov/downloads/doe-public-access-plan ). This work was funded by the Advanced Building Construction Initiative under the Building Technologies Office of the U.S. Department of Energy (DOE), under contract no. DE-FOA-0002099. The National Natural Science Foundation of China (grant no. 52373275) supported contributions to the writing and editing of the manuscript, as well as a few experiments. This manuscript was authored by UT-Battelle, LLC under contract no. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains the publisher by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (https://energy.gov/downloads/doe-public-access-plan).
| Funders | Funder number |
|---|---|
| Advanced Building Construction Initiative | |
| DOE Public Access Plan | |
| United States Government | |
| U.S. Department of Energy | DE-FOA-0002099 |
| Building Technologies Office | |
| National Natural Science Foundation of China | DE-AC05-00OR22725, 52373275 |