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Exterior wall attachment investigation

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At the Analysis Center Co., Ltd., we conduct "Exterior Wall Adhesion Material Surveys." Pyrolysis GC/MS analysis (Py-GC/MS) is a method that analyzes the decomposition products generated by rapidly heating a sample using GC/MS to identify the main components. It is effective for determining the types of polymer compounds such as plastics and rubber. In this case, we present an example of component analysis conducted on a small amount of black viscous material adhered to an exterior wall using pyrolysis-GC/MS analysis (Py-GC/MS). [Pyrolysis-GC/MS Analysis (Py-GC/MS) Example] - From the exterior wall adhesion material, 1-butene and several low polymers of isobutene were detected as pyrolysis products. - The adhesion material was determined to be a copolymer of isoprene and isobutylene (butyl rubber). - Butyl rubber is widely used as a water stop agent for concrete. - It is inferred that the exterior wall adhesion material is a result of the degradation of the water stop agent on the exterior wall, causing it to seep out. *For more details, please download the PDF or feel free to contact us.