Depth of penetration in polymers











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An x-ray photoelectron spectroscopy study. Comparative evaluation of fluorinated and unfluorinated acrylic copolymers as water-repellent coating materials for stone. It must be borne in mind that concentration of polymers inside stone materials is highly dependent on stone type but is always very low, ranging from a few grams to a maximum of approximately g per square meter. In addition, the technique, like other infrared applications, is generally qualitative, allowing at best semi-quantitative assessment of the polymer's presence at different depths. Hydrophobic treatment effects. Samples of yellow Angera stone and Noto stone treated with Paraloid B confirmed the tendency for the acrylic resin to form a film, as it was detected only in the uppermost section examined for both i.

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Comprehensive Study On Estimation Of Gamma

Samples of yellow Angera stone and Noto stone treated with Paraloid B confirmed the tendency for the acrylic resin to form a film, as it was detected only in the uppermost section examined for both i. Effects of hydrophobic treatments of stone on pore water studied by continuous distribution analysis of NMR relaxation times. Photomicrograph of the hydrophobization properties of the surface of a cross section of Noto stone treated with Paraloid B photograph taken two minutes after deposition of microdrops. each bar indicates 1 mm Fig. Kumar and Ginell performed some tests with aqueous solutions of Rhodamine B, but this dye worked only with epoxy-resin treated materials. Fluorinated polymeric materials for the protection of monumental buildings. Wacker was shown to impregnate the entire thickness 20 mm of the tested samples with a homogeneous distribution.

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Polymers and electromagnetic radiation

Hydrogen Compatibility of Polymers for Infrastructure Applications. The siloxane polymer has a great ability to impregnate the porous structure of treated stones. You either do not have a subscription or your subscription has expired. The experiments confirm that texture and porosity of the stone together with chemical nature and quantity of applied polymers can affect the pattern of resin distribution Fig. That different laboratories obtained different values highlights the problem of reproducibility. It is interesting to note that Fig.

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Description: Study of water penetration in rock materials by nuclear magnetic resonance tomography. When water repellency is measured on the surface of cross sections of treated samples, data obtained can be related to penetration depths of polymers inside the stones Biscontin et al. A new technique for determining the depth of penetration of consolidants into limestone using iodine vapor. Stones and mortars of historical and artistic value. This very simple and lowtech method was used to check the general reliability of results obtained by various infrared spectroscopic approaches. Ceramic and Other Hard Coatings. The penetration depth values thus obtained must be considered specific to each method, and data are complementary. Thermal degradation of poly methyl methacrylate. Kumar and Ginell performed some tests with aqueous solutions of Rhodamine B, but this dye worked only with epoxy-resin treated materials.
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