Full Text

Turn on search term navigation

© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Moisture-curable polyurethane (MCPU) is a specifically designed material for the consolidation of fragile cultural objects in high-humidity environments. In order to solve the problem of its susceptibility to yellowing due to heat ageing, polyhedral oligomeric silsesquioxane (POSS) was added to the MCPU to prepare POSS/MCPU. The appearance, stability and mechanical properties of the POSS/MCPU films were characterized using a UV–Vis spectrophotometer, a gloss meter, a colorimeter, a thermal analyzer and a universal material testing machine. The results showed that the films are colorless and transparent and have a light transmission of over 80%. The addition of POSS has almost no effect on the chromaticity of the MCPU, while the thermal stability of the POSS/MCPU is improved compared to the pristine MCPU. The modified film is 2.50 times more resistant to yellowing by heat. The addition of POSS also simultaneously enhances the strength and toughness of the film. Using POSS/MCPU to reinforce the fragile object, the material was found to be significantly effective, indicating it has the potential to be used during the extraction of fragile cultural objects from archaeological sites.

Details

Title
The Study of POSS/Polyurethane as a Consolidant for Fragile Cultural Objects
Author
Zhao, Xing 1   VIAFID ORCID Logo  ; Lang, Guo 2 ; Wang, Liqin 3 ; Wang, Ziming 1 ; Meiman Peng 2 ; Zheng, Liping 4 ; Niu, Qing 5 

 Key Laboratory of Cultural Heritage Research and Conservation, Northwest University, Ministry of Education, Xi’an 710127, China; [email protected] (X.Z.); [email protected] (Z.W.) 
 School of Cultural Heritage, Northwest University, Xi’an 710127, China; [email protected] (L.G.); [email protected] (M.P.) 
 Key Laboratory of Cultural Heritage Research and Conservation, Northwest University, Ministry of Education, Xi’an 710127, China; [email protected] (X.Z.); [email protected] (Z.W.); School of Cultural Heritage, Northwest University, Xi’an 710127, China; [email protected] (L.G.); [email protected] (M.P.) 
 School of History and Society, Chongqing Normal University, Chongqing 401331, China; [email protected] 
 Xi’an Cultural Heritage Promotion Centre, Xi’an 710001, China; [email protected] 
First page
153
Publication year
2022
Publication date
2022
Publisher
MDPI AG
e-ISSN
20796412
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2632622917
Copyright
© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.