We can't live without the presence of plastic in our lives. We use plastic water bottles for drinking water and plastic storage boxes for cold food. Is plastic water cup poisonous ? Let's take a look at the pc plastic cup, pp plastic cup is toxic , for your reference.
Pp plastic (polypropylene) is another excellent resin developed after nylon. It is a linear polymer with high density, no side chain and high crystallinity, and has excellent comprehensive properties. It is white translucent when uncolored, waxy; lighter than polyethylene. Transparency is also better than polyethylene and harder than polyethylene. Plastic cups are non-degradable products. Many people throw the cups after they have finished drinking them, making this disposable plastic cup the main source of “white pollutionâ€. And pp plastic cups are common soy milk bottles, yogurt bottles, juice drinks bottles, microwave lunch boxes. With a melting point of up to 167 ° C, it is the only plastic box that can be placed in a microwave oven and can be reused after careful cleaning. It should be noted that some microwave oven lunch boxes are made of No. 5 pp, but the cover is made of No. 1 PE. Since PE cannot withstand high temperature, it cannot be placed in the microwave oven together with the box.
The pp plastic cup is made of polypropylene, which has good heat resistance. The product can be sterilized at a temperature above 100 °C, and it is not deformed at 150 °C under the condition of no external force. The embrittlement temperature is -35 ° C, embrittlement occurs below -35 ° C, and the cold resistance is not as good as polyethylene. Is the plastic cup poisonous ? There are 18qC, OqC, 5°C, etc. reported for the glass transition temperature of polypropylene. This is also because people use different samples, in which the ratio of crystal phase to amorphous phase is different, so that the chain length of the amorphous part in the molecular chain is different. Caused. The melting temperature of polypropylene is about 40-50% higher than that of polyethylene, about 164-170 ° C, 100% isotactic polypropylene.
Usually drinking water is best to use stainless steel vacuum flask glass or ceramic cup, which is more conducive to healthy drinking water; but strongly opposed to using plastic cups to fill boiling water or brewing tea, like bisphenol A, will be released at temperatures above 100 degrees Celsius. However, the experts also pointed out that if the cup made of PP plastic is non-toxic, because the processing temperature (°C) of PP plastic is 180-240, the boiling water will not decompose it.
Is it poisonous to plastic cups? I would like to introduce them to you today. I hope to help you. When you choose a cup, try to choose stainless steel cups or glasses, which is good for your health.
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