Protective glazing systems

Impact of Environmental Factors on Polymeric Films Used in Protective Glazing Systems... 

There are currently three grades of protection offered in the Double Glaze System. (The three digit number indicates the Lexgard panel s thickness.)... 

The new double-glazed system provides increased protection at a lighter weigh when compared to competitive products. 

In chemical plants where corrosive, wet conditions are anticipated, walls are protected with membranes and brick veneers in the same manner as floors. Alternatively, a divider wall between two rooms, or one that is to support a roof or other load, may be built entirely of "acid brick" and mortar. A different, more attractive system, is usually followed in food plants such as dairies, often employing glazed tile or block. The latter are laid just as are regular cement block, except that the face joints are left void to a depth of % in. or more, or raked back to that depth before the joints set up. After cure, the surfaces of the joint are cleaned usually with dilute hydrochloric acid, and the joints pointed full with a furan mortar. See Drawing 14 to see how this kind of a wall is mated to an "acid brick" floor and membrane. 

Fig. 5 Sketch of two different prismatic sun protection systems (a) Venetian blind with lamellae which are translucent for most angles of incidence, (b) double-glazed seasonal sun protection system. The solar radiation is incident from the upper left comer...

Snowflake. OECC taitTJ Calcium carbonate iMgmentfor protective coatings, rubber, i tics, caulks, glazing ccun-pounds, mastics, filled systems. 

During the past 5 years, standards that may be used to calibrate reflec-tometer systems indirectly in reflectance mode have been developed. All these standards incorporate stable rare earth oxides, either as powders or as the oxides protected by a matrix of ceramic or polymer. The initial standard of this type was produced by NIST under the designation SRM-1920. The standard was a mixture of holmium, erbium, and dysprosium oxide in a quartz-covered powder cell and was meant for usage in the near-IR only. J. Verrill at NPL has produced a holmium oxide-doped glazed ceramic tile for use as a standard. This material suffers from some peak broadening and shifting, likely due to the high temperature of process of the ceramic. 

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