新型光催化涂层及加固剂对珍贵矿物基质的保护效果

Efficiency of Novel Photocatalytic Coating and Consolidants for Protection of Valuable Mineral Substrates.

作者信息

Pondelak Andreja, Kramar Sabina, Ranogajec Jonjaua, Škrlep Luka, Vucetic Snežana, Ducman Vilma, Škapin Andrijana Sever

机构信息

Slovenian National Building and Civil Engineering Institute, Dimičeva 12, 1000 Ljubljana, Slovenia.

Faculty of Technology, University of Novi Sad, Bul. cara Lazara 1, 21000 Novi Sad, Serbia.

出版信息

Materials (Basel). 2019 Feb 9;12(3):521. doi: 10.3390/ma12030521.

DOI:10.3390/ma12030521

PMID:30744091

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6384708/

Abstract

In the process of protection and consolidation of valuable materials, the efficiency is the crucial property that needs to be considered. TiO₂/ZnAl layered double hydroxide (LDH) coating and silicate- and carbonate-based consolidants were synthesized and proposed to be used for protection and consolidation of four porous mineral substrates: brick, stone, render and mortar. The photocatalytic efficiency of TiO₂/ZnAl LDH coating, as well as consolidation efficiency of two consolidants, both applied on model substrates, were studied. The photocatalytic coating showed significant activity and performed well after the durability tests involving rinsing and freezing/thawing procedures. After treatment with both consolidants, a serious enhancement of consolidation of the used substrates was found. On the other hand, the application of TiO₂/ZnAl LDH, as well as consolidants, caused negligible changes in the water vapour permeability values and in appearance of the porous mineral substrates, indicating a high level of compatibility.

摘要

在对珍贵材料进行保护和加固的过程中，效率是需要考虑的关键属性。合成了二氧化钛/锌铝层状双氢氧化物（LDH）涂层以及基于硅酸盐和碳酸盐的加固剂，并提议将其用于四种多孔矿物基材（砖、石、抹灰和砂浆）的保护和加固。研究了应用于模型基材上的二氧化钛/锌铝LDH涂层的光催化效率以及两种加固剂的加固效率。光催化涂层显示出显著活性，并且在涉及冲洗和冻融程序的耐久性测试后表现良好。在用两种加固剂处理后，发现所用基材的加固效果有显著增强。另一方面，二氧化钛/锌铝LDH以及加固剂的应用在水蒸气渗透率值和多孔矿物基材外观方面引起的变化可忽略不计，表明相容性很高。