By Nicholas P. Cheremisinoff
This quantity covers complex polymer processing operations and is designed to supply an outline of a few of the newest advancements for specific items and fabrication equipment. participants for this quantity are from either and academia from the overseas neighborhood. This ebook comprises 9 chapters overlaying complicated processing functions and applied sciences.
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It is then cut, removed from the cylinder, flattened out and impregnated with resin. The sheets thus formed are compression molded and the products have quite high mechanical strengths. Chopped strands can be also incorporated into an X-pattern to improve the strength further. WET LAY-UP PROCESSES In these processes there is usually only one half of the mold, and the item to be produced comes out in the form of this mold. The resin has low viscosity without fillers and much additives, and it is spread on the continuous glass fibers stationed in the mold.
The mold release agent, and the gel-coat are first applied on the surface. Fiber glass roving is fed to a chopper, and the chopped strands are sprayed onto the mold simultaneously with resin containing initiator and accelerator as shown in Figure 7. The mix material on the surface is rolled by hand to lay down fibers, remove air and to smooth the surface. The thickness is controlled by the operator and sufficient thickness can be built up in sections likely to be highly stressed. The success highly depends on the skill of the operator.
Advanced Polymer Processing Operations by Nicholas P. Cheremisinoff