Glass fiber types

Glass fiber type Density (gcm ) Tensile strength (GPa) Youngs modulus (GPa)... 

F. 6.3 Glass fiber-type E embedded in PP matrix as a reinforcing material [33]... 

TABLE 1, Compositions (% wt) of various glasses used in fiber production, Soda lime glass is known as A-glass. The type E is the most widely used glass fiber, types S and R are glasses with enhanced mechanical properties, type C resists corrosion in an acid environment, type Z in an alkaline... 

The fibers can be further characterized by their physical and chemical properties, which are governed primarily by the composition of the glass. There are several glass fiber types, with different chemical compositions for different applications. They... 

Figure 3.22 Effect of glass fiber type on tensile strength at addition levels of Polybond 3150. m, PPG 3242 , OCF144 IBT, Schuller 733 E, Vetrotex 96P. (From Uniroyal Chemical Co., Inc., literature.)...

Samples collected should be full shift (at least 7-hour) samples. Sampling should be done using a personal sampling pump with pulsation damper at a flow rate of 2 liters per minute. Samples should be collected on 0.8 micrometer pore size silver membrane filters (37 mm diameter) preceded by Gelman glass fiber type A-E filters encased in three-piece plastic (polystyrene) field monitor cassettes. The cassette face cap should be on and the plug removed. The rotameter should be checked every hour to ensure that proper flow rates are maintained. 

Tensile strength in various glass fiber types as a function of exposure time... 

Primarily, the solid types of insulation considered were glass fiber Type A , glass fiber Type "B , rigid cellular glass, thermal-aluminum insulating rings, and expanded polystyrene. 

We have established that of the solid insulations and evacuated powders, glass fiber Type insulating material is... 

In evaluating the glass fiber Type "A" insulation, it was necessary to determine the optimum thickness. In Figure 2, curve A" represents material cost for insulating 650 feet of line. Curve "B represents the cooldown and steady state heat-leak cost for the 650 feet of line to be used each day. The dashed line represents the cumulative cost of curve "A and curve B , and illustrates that a two inch thickness of glass fiber Type "A would be most economical. 

Having established that a two inch thickness of glass fiber Type "A insulation should be used, further comparisons between the glass fiber and high vacuum insulation can now be made. 

Figure 3 illustrates a comparison of the glass fiber Type A and the high vacuum insulation with regard to the steady state heat fluxes between 300 K to 90 K, the density and the specific heat. From this data the calculated cooldown losses in pounds of BOX per hundred feet, the boil-off losses in pounds of LOX per hour per hundred feet, and the combined daily losses in pounds of LOX per hundred feet were calculated. For the purpose of this comparison, the cooldown losses incurred by the inner line were ignored because each type of insulation will require the same common inner line. Please note that the heat flux of the glass fiber Type is approximately... 

In Figure 4 a comparison of performance is made between glass fiber Type "A and high vacuum insulation. 

A cost estimate revealed that a line insulated with glass fiber Type A complete with an adequate vapor barrier, such as a welded aluminum jacket, would be about 10 per cent of the installed cost of a high vacuum line. For a relative cost comparison, we have established the installed cost of the high vacuum line as 100 per cent, This sets the installed cost of the glass fiber Type A at 10 per cent. 

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