ANALYSIS OF THE TYPE OF ERROR IN THE STRUCTURE OF RUBBER SAMPLES

Products made of polymer materials are obtained by turning the raw material from which it is madeunder influence temperature and, in some cases, high pressure, into a liquid state and filling mold cavity.This transition often problematic because very quickly when transitioning to state, irreversible chemicalprocesses begin occur material, necessary that process reverse crystallization takes veryshort time. This problem pronounced with products rubber. When making mixture, aprocedure must be followed regarding speed mixing, order adding components duration ofthe itself. In case poorly chosen mixing parameters, agglomerations may structure theproduct, can later negatively affect exploitation product rubber begins totransition phase fills cavity, layers contact tool form finalstructure shape. chemical system not balanced, i.e., spilling, happen rubberdoes fill cavity scrap obtained. Another if closing high,an airy or kind defect appear. Regarding this phenomenon, itmust taken account spilling always higher than tool. caseof poor selection vulcanization vulcanizer, certain compounds also appear thatnegatively properties product. Also, special attention paid working environment, as itvery happens external bodies found product, related andpressing procedures. The release belongs group tests alwaysaccompanied destruction According type examination, visual control,and according degree optical magnification, macro micro examinations. Eye inspection tomacroscopic used check exterior test convenient fastand reliable. Microscopic examinations complex complicated atransparent material. Therefore, examination carried out on SEM (scanning electronmicroscope). preparation sample includes vaporization gold, then samples placed aspecial chamber where they bombarded electrons observed monitor. Depending onthe error products, divided those technology causedby impurities. Those manufacturing different, variouschemical during mixing. While percentage pressing, an appear.The most common errors appearance foreign inside isovercome clear pressing procedures, but automating procedures themselves, whichreduces human minimum.