Glass content

Fig. 8. Flexural properties at elevated temperatures. Laminates constmcted from alternating pHes of 46.7-g (1.5-02) mat and 746-g/m (24-o2/yd ) woven roving at a nominal glass content of 45%. A represents bisphenol fumarate (T = 130° C) B, novolak epoxy methacrylate (T = 130° C) C, epoxy dimethacrylate (T = 100° C) D, isophthaUc resin (T = 100° C) and E, oAy f -phthahc resin (T = 80° C).

The above comments refer to comparisons between the two compositions at the same glass-fibre level. If, however, comparison is made between a nylon 66 composition with a glass content of x% and a nylon 6 compound with a glass content of (x + 5)%, then the differences in mechanical properties become very small. At the same time the nylon 6 material will have slightly easier processing characteristics and surface quality. 

Glass-reinforced grades (at 30 and 40% glass content loading). 

Ideally the product is a fine-grained ceramic containing interlocking crystals with sizes ranging from less than 10 nm in transparent glass-ceramics to several micrometres, with a residual, usually small, glass content. The behaviour of the material is largely determined by the choice of the cry-... 

Fig. 8-56 Properties of style 181 glass fabric (bidirectional type) parallel lay-up with 60wt% glass content.

Because of their high glass contents and very fine grain size, volcanic rocks are very susceptible to low-temperature processes such as hydration and weathering, which are characterized by large 0-emichment effects in the altered rocks. 

Type I Spherical or rounded, often with high glass content. Particles may be solid or 0-20... 

Type 3 Rounded, colourless. Spongy texture and high glass content. May include 10-200... 

The glass content was determined by resin bum-off of ring segments in crucibles in a muffle furnace. The void content was determined by a method of optical microscopy previously reported (6). Horizontal shear was measured by the Short Beam method (1). 

Figure 7. Effect of glass content upon the fatigue life of rings pro-duced with the Br1/X1 matrix...

The laminate construction in FRP parts can have an effect on flame spread and smoke test results. A study was conducted by Stevens15 and published in the proceedings of Composites 2007 conference. This study looked at how glass fiber content and panel thickness affected the ASTM E-84 flame spread index (FSI) and smoke developed index (SDI). The effects of fiber content and thickness on cone calorimeter results were also evaluated. Another study was conducted by Dempsey16 looking at the effect of glass content in several fire tests, and in this paper, he also found a correlation between the FR performance and glass content. 

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