Glass fibers structure

Figure 4.27 Glass fiber structure after stress in the screw channel (initial fiber length 3 mm) [6]...

Recently, Yu et al. [6] provided a comprehensive review of existing computational models to analyze trends in mechanical properties, e.g., yield Stress CTc or tensile strength. The following analytical expression for the modified rule of mixture model is most coimnonly used to relate stress values to contemporary concepts of glass fiber structure and polymer property relationships ... 

PE fleece chlorosulfonated PE PE, PP for special applications PE, LLDPE, PP propylene copolymer raw materials, for paper and textile refinement, flame spray and centrifugal sintering powder, compounds with glass fibers, structural foams chlorinated polyolefin PE wax... 

One more application area is composite materials where one wants to investigate the 3D structure and/or reaction to external influences. Fig.3a shows a shadow image of a block of composite material. It consists of an epoxy matrix with glass fibers. The reconstructed cross-sections, shown in Fig.3b, clearly show the fiber displacement inside the matrix. The sample can be loaded in situ to investigate the reaction of matrix and fibers to external strain. Also absorption and transmission by liquids can be visualized directly in three-dimensions. This method has been applied to the study of oil absorption in plastic granules and water collection inside artificial plant grounds. 

The silane coupling forms a sheathlike structure around the glass fibers. 

Its manufacturing is done by winding continuous strands of plastic-impregnated glass fiber around a steel mandrel at a precisely controlled helix angle, under controlled tension. A cross-sectional view of an RP layup is shown in Fig. 4-2(d). As seen, the structural wall of the pipe is made up of con-... 

In order to simplify the analytical exercise, a particular material was selected for each. The single curved sheet is made of TS polyester fiber glass molded to the shape. The corner supported pan is molded from ABS plastics. The structural foam unit is molded from PP with glass fiber filler. 

For certain products, skill is required to estimate a product s performance under steady-state heat-flow conditions, especially those made of RPs (Fig. 7-19). The method and repeatability of the processing technique can have a significant effect. In general, thermal conductivity is low for plastics and the plastic s structure does not alter its value significantly. To increase it the usual approach is to add metallic fillers, glass fibers, or electrically insulating fillers such as alumina. Foaming can be used to decrease thermal conductivity. 

Radome Also called radiation dome. It is a cover for a microwave antenna used to protect the antenna from the environment on the ground, underwater, and in the air (aircraft nose cone, etc.). The dome is basically transparent to electromagnetic radiation and structurally strong. Different materials have been used such as wood, rubber-coated air-supported fabric, etc. The most popular is the use of glass fiber-TS polyester RPs. The shape of the dome, that is usually spherical, is designed not to interfere with the radiation. 

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