Four principles for the identification of PVC waste plastics
1. Look at the color: Polyvinyl chloride resin is a white powder.
2. Handfeel (feeling weight, smoothness): Polyvinyl chloride has high mechanical strength, and its mechanical strength is related to its molecular weight, the variety and quantity of plasticizer added, and the ambient temperature. Generally, as the molecular weight increases, the hardness and mechanical strength increase; as the ambient temperature increases, the hardness and mechanical strength decrease.
3, igniting (view whether the flame color smokes, whether it contains burning from the fire or not burning at all): It is difficult to burn, it will be extinguished when leaving the flame, the flame is yellow when burning, the blue color at the lower end, and white smoke emerges.
4, smell (various plastic flavors are different, including flame retardants, etc.): during the burning process, the resin becomes soft, and the hair is also irritating sour and chlorine.
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