How many kinds of plastics are there? What's the difference?
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- Unsolveddestoon
- 2021-08-09 18:43
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- 1Flooranonymity
- 2021-08-12 18:49
(1) PE, PP, PA, etc. have different bendability, hard wax-like smoothness when touched, and soft horny sound when tapped. In contrast, PS, ABS, PC, PMMA, etc., have no extensibility, and the touch is rigid and sexy, and the sound is clear when struck.
(2) The relative density of PE and PP is less than 1, so they float in water; most other plastics are greater than 1, so they sink in water.
(3) Before dyeing, LDPE plastic particles are milky white and transparent, soft, flexible and tough, slightly stretchable, and easy to bite and deform with teeth. HDPE is milky white, opaque, and has a slightly hard texture. PP is white and translucent, more transparent and lighter than PE, more rigid, and extremely difficult to deform with teeth.
(4) The main difference between PS, HIPS and ABS is that PS is brittle. HIPS and ABS are tough, so PS is easy to break when bending. The latter two are difficult to break and turn white at the bending part. It is easy to identify before dyeing; PS is transparent, HIPS is milky white, and ABS is light ivory.
(2) The relative density of PE and PP is less than 1, so they float in water; most other plastics are greater than 1, so they sink in water.
(3) Before dyeing, LDPE plastic particles are milky white and transparent, soft, flexible and tough, slightly stretchable, and easy to bite and deform with teeth. HDPE is milky white, opaque, and has a slightly hard texture. PP is white and translucent, more transparent and lighter than PE, more rigid, and extremely difficult to deform with teeth.
(4) The main difference between PS, HIPS and ABS is that PS is brittle. HIPS and ABS are tough, so PS is easy to break when bending. The latter two are difficult to break and turn white at the bending part. It is easy to identify before dyeing; PS is transparent, HIPS is milky white, and ABS is light ivory.