Powders radiation protectants

Demeo and Kucherovsky (2005) reconunended the use of fabrics that offer protection against multiple threats. The authors suggested that a radiation-protective material such as barium, bismuth or tungsten can be mixed with a powdered/pelletized polymer or a suitable liquid/emulsioa This mixture can then be combined with or layered upon another fabric such as Kevlar to provide multiple protection capabilities. ... 

When lead, which is very soft, is freshly cut, it has shiny blue-white sheen, which soon oxidizes into its familiar gray color. Lead is extremely malleable and ductile and can be worked into a variety of shapes. It can be formed into sheets, pipes, buckshot, wires, and powder. Although lead is a poor conductor of electricity, its high density makes it an excellent shield for protection from radiation, including X-rays and gamma rays. 

It was prophesied in the 1960s that oil-based paints would disappear from the market in about 20 years in favour of petrochemical-based products. This has not happened, and the main protective paints are still based on fatty oils. In fact, following the oil crisis, the trend has been back to raw materials from renewable resources. None of the new technologies such as the use of powder coatings, water-borne paints, or radiation-curing paints, which would not have been based on oils, have proved as versatile as expected. 

The electrical equipment used in zone 2 will contain a minimum amount of protection. For example, normal sockets and switches cannot be installed in a zone 2 area, but oil-filled radiators may be installed if they are directly connected and controlled from outside the area. Electrical equipment in this area should be marked Ex o for oil-immersed or Ex p for powder-filled. 

The paints can be liquids or powders that are applied to surfaces to make a dry coating for protective or decorative purposes. The protective functions include, for example, prevention of corrosion, resistance to fire and protection against fungi, marine growth and radiation. Reduction of friction, control of illumination and electrical insulation are other functions of paints. The decoration of homes and public buildings has become more common than previously and has thus increased the need for high-quality paints that do not cause health problems. (Fischer and Adams 1990 Rose and Vance 1997). 

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