Lez 2 Question Title * 1. How can we increase rubber compound modulus? increasing the oil content in the compound adding a filler to a compound adding a filler with a high surface increasing the crossiling by curatives reducing the content of a filler featuring low surface area Question Title * 2. What does filler surface area mean? the ratio between density and filler dimension the ratio between filler surface and weight the filler chemical reactivity Question Title * 3. What is the meaning of reinforcing filler? Filler able to improve the rubber mechanical properties. Filler featurig surface area higher than 50 m2/g. Filler featuring a high level of hardness Question Title * 4. What you suggest to improve rubber abrasion resistance? adding reinforcing filler to compound increasing crossing amount using a low Tg polymer Question Title * 5. how the rubber modulus change with strain linearly decreasing decrasing with no linear trend no change with strain Other (please specify) Question Title * 6. the rubber modulus is a property depending on test method an absolute propertiey of the material a behaviour of rubber during the laboratory testing Question Title * 7. Pasquale ha bisogno di uno smorzatore di vibrazioni per la sua auto.All' interno del negozio ci sono due campioncini degli smorzatori, sono due palline di marca "nero" e marca "rosso" .Non fidandosi del negoziante decide di verificarne le prestazioni.lancia le palline da un metro e vede quanto rimbalzino.Il nero aggiunge la quota di 50 cm ed il rosso di 75 cm.Dire quale materiale sceglerà pasquale e calcolare il valore di tand del materiale scelto sapendo che :a. le palline abbiano la stessa massa e l' attrito con l' aria sia trascurabileb. una terza pallina con tand pari a 0.9 raggiunga la quota di 10 cmPasquale needs a vibration damper for his car.All 'inside of the shop there are two samples of the damper, two balls "black" and "red" brand respectively.Not trusting the merchant, he decides to verify performances.He launches the balls from one meter and see how much they are bouncing.The black achieve 50 cm and the red 75 cm.Which rubber will be choosen and calculate the value of tand of the rubber chosen assuming:to. the balls have the same mass and the air friction is negligibleb. a third ball with tand equal to 0.9 reaches 10 cm. Red , tand = 0.22 Red , tand = 0.12 Red , tand = 0.5 Red , tand = 0.16 black, tand = 0.22 black, tand = 0.12 black, tand = 0.28 black, tand = 0.45 Other (please specify) Done