Glass-stone

In the past decades, polymer materials have been continuously replacing more traditional materials such as paper, metal, glass, stone, wood, natural fibres and natural rubber in the fields of clothing industry, E E components, automotive materials, aeronautics, leisure, food packaging, sports goods, etc. Without the existence of suitable polymer materials progress in many of these areas would have been limited. Polymer materials are appreciated for their chemical, physical and economical qualities including low production cost, safety aspects and low environmental impact (cf. life-cycle analysis). 

In Dr. Rea s book (see entry 328) you can also find a list of construction materials judged safe for MCS patients. The safest materials for MCS patients are, among others glass, stone, steel, ceramic, aluminum, untreated hardwood and untreated natural products. However, many kinds of wood can cause problems, particularly if the wood has been treated or impregnated, and some patients get sick from the resin which the wood may contain even when untreated. White poplar wood is very suitable for MCS patients, and is used, for example, in MCS saunas. 

Glass-stone is a high carbonate limestone, which is low in iron oxide and is suitable for the manufacture of glass. 

About the same time, there was a controversy in England about the effect of liquids on adhesion of glass. Stone reported to the Philosophical Magazine that... 

Carrier Material Polymer, Metal Glass, Stone... 

The collection of the recyclable pipes is organized by the producers association. The pipes are delivered in bulk to the recychng plant. It is a mixture of PVC and PE-pipes, with variable contamination by rubber, metals, sand, glass, stones, etc. 

High density foreign parts separator (glass, stone)... 

Stone. A crystalline inclusion present as a fault in glass stones may result from incomplete reaction of particles of batch or from the pick-up of small fragments of the refractory lining of the pot or furnace in which the glass is melted. The most common constituents of stones are carnegieite, corundum, cristobalite, mullite, nephelite, tridymite and zirconia. See also china stone. 

In this chapter, we explore inorganic and organic-inorganic sol-gel formulations of interest to conservators, for potential uses on stained glass, stone or metal substrates exposed to corrosive outdoor environment. 

The physical and chemical properties of the materials of these solids are so diverse that there is hardly any correlation to be expected between these properties and the levels of the friction-speed curves. Materials such as glass, stone and PMMA in clean state (in the engineering sense), give equally high values in this series, whereas PTFE gives the lowest value as expected. There is no correlation between the peak values and the surface roughness (CLA values). 

Precaution Do not use in systems with galvanized parts keep away from glass, stone floors, and tiling... 

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