Changshu smoothly da plastic products factory to teach you how to identify with a coin PP plastic tubing true or false

PP plastic pipe material, also called three type polypropylene pipe, which is cold and hot water pipe, is the home installs the necessary material. Some businessmen in order to reduce costs, in the production of PP plastic pipe material, add 2000 yuan to 3000 yuan every meal of calcium carbonate, such inferior PP plastic tubing products aging, life is short. Changshu well below da plastic products factory will teach you how to use a coin to distinguish true and false of PP plastic tubing.



2004 years after the standard weight is 6 grams of a yuan of coin, the PP plastic tubing to intercept a short weigh, to ensure that the PP plastic tubing is used in the experiment 60 grams, is ten times the weight of the coin, and then the interception of the PP plastic pipe material, cut a small mouth, will coin card, and then prepare a basin of water, the card with PP plastic pipe in the water of the coin, P P plastic pipe if it is true, floating on the surface, if sink into the water, explain this PP plastic tubing with the impurities such as calcium carbonate.



so someone will ask this has scientific basis? Actually very simple principle: the proportion of water is 1, true PP plastic tubing proportion in 0. 9 - 0. 91 between, it is not submerged in the water, and the proportion of calcium carbonate is 2. 7 above, once the PP plastic pipe material, adding calcium carbonate ratio will increase, the weight of the PP plastic tubing and COINS ratio is 10:1, on the surface of the water, PP plastic tubing is really won't sink.