Phenyl grafted flexible-rigid hybrid organosilicon network with enhanced aging- and crack-resistance for sandstone cultural heritage conservation
Bibliographic Data
| ID | 24216031 |
|---|---|
| Authors | Yangchao Cheng, Zheng Li (0000-0002-7537-2509), Wei Yang (0000-0001-7249-4386), Ruchen Li, Lei Huang (0000-0002-5422-5470), Zijia Zhu, Rong Yang (0000-0002-6983-4682), Tongxin Chen (0000-0003-1763-6876), Lu Wang (0000-0002-9250-3988), Jizhong Huang (0000-0001-7308-1970), Fanxing Bu (0000-0003-3177-5928) |
| Year | 2026 |
| Volume | 82 |
| Pages | 124-135 |
| Publication date | 2026-11-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Journal of Cultural Heritage (JOURNAL) |
| Journal identifiers | ISSN: 1296-2074 • E-ISSN: 1778-3674 |
| Publisher | Elsevier BV (PUBLISHER) |
| DOI | 10.1016/j.culher.2026.08.017 |
| OpenAlex | W7214079126 |
| Language | EN |
| References cited | 31 |
Functionalization of conventional tetraalkoxysilane-derived organosilicon sols has been widely adopted to mitigate cracking issues in sandstone cultural heritage conservation. However, the introduction of inappropriate organic segments critically compromises aging resistance and practical utility. In this study, a phenyl-functionalized organosilicon sol (Ph-sol) is designed via copolymerization reaction between methylphenyldimethoxysilane and tetraethoxysilane, which synergistically enhances crack resistance and aging resistance. Spectroscopic characterizations confirm that the flexible Si–O–Si segments grafted with phenyl groups integrate into the rigid three-dimensional Si–O networks upon solidification. This molecular architecture endows the resulting xerogels with improved resistance to thermal aging (300 °C for 6 h), photoaging (550 W/m 2 for 168 h), and acid degradation (0.1 mol·L −1 H 2 SO 4 for 24 h). Furthermore, Ph-sol possesses good permeability (16.03 mm within 5 min) and can penetrate into the interior of weathered Yungang Grottoes sandstone to form a three-dimensional continuous consolidation network to achieve good consolidation performance. This synergy of crack resistance, triple anti-aging performance, and consolidation efficacy positions Ph-sol as a promising consolidant for acid-weathered sandstone in laboratory tests, warranting further evaluation under more realistic multi-factor weathering conditions.
acid degradation · aging resistance · copolymerization · crack resistance · cultural heritage preservation · permeability · Photoaging · tetraethoxysilane · Yungang Grottoes · Building materials and conservation · Cultural Heritage Materials Analysis · Silicone and Siloxane Chemistry
Assessment of synthetic polymeric coatings for the protection and preservation of stone monuments
Flexible-rigid hybrid siloxane network for stone heritage conservation
Mechanisms of preservation damage
Indicators and ratings for the compatibility assessment of conservation actions
Particle-modified consolidants
| Citation velocity | historical |
|---|---|
| Highly cited | No |