The distinguish method of metal coat hooks used metal clothes1

Metal clothes identification can use infrared spectrometer, paramagnetic resonance spectroscopy and X-ray, etc. The method of science, but also is relatively simple and easy method can be used to identify. The following simple says simple method to identify the senses identification sense of ( Organize students to participate in identification of metal clothes) ( A) First look at the colour and lustre of metal coat hooks products, transparency. Transparent metal coat hooks products of polystyrene and organic glass. Translucent products have low density polyethylene, cellulose metal clothes, polyvinyl chloride (PVC), poly (propylene, epoxy resin, unsaturated resin. Opaque metal coat hooks products have high density polyethylene, polyurethane, and various non-ferrous metal clothes. ( 2) Listen to use hard objects hit, the sound is different, polystyrene as metal sound, organic glass the coarser, tightness. ( 3) Touched with the hand to touch the product feel like a waxy, must be polyolefin material. Second, its soft hard degree, can be shown by the following simple hard to soft polystyrene, polypropylene, polyamide - organic glass, high density polyethylene - hard poly vinyl chloride to low density polyethylene, soft PVC to test surface hardness, its surface with a different hardness pencil strokes, can make the difference between polyethylene metal clothes with a HB pencil can cross line mark; Polypropylene metal clothes with a useful pencil line mark.