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[Chemical Knowledge]：7 plastic, explore its mysteries

Read： 522 Time：20months ago Source：Transform the World with Simplicity

With the development of society, plastic products are used more and more widely in people's daily life. However, do we know how to correctly identify different types of plastics? Among them, No. 7 plastic is a special one, today we will take a closer look at its characteristics and uses.

us to understand the plastic classification. According to the recycling method of plastics, plastics can be divided into seven categories: 1~7. The so-called No. 7 plastic, refers to the difficult to be recycled mixed materials, that is, a variety of plastic hybrid plastic. This plastic material is often difficult to determine its specific chemical composition, and it is not easy to recycle.

However, No. 7 plastic can also be used. For example, one of the materials is called PC(Polycarbonate), which is widely used in the protective case of mobile phones, computers and other electronic products. In addition, No. 7 plastic is also an important material for the manufacture of plastic bottles, boxes, rubber products, sports equipment, etc.

, however, we also need to consider its environmental protection when using it. Due to the difficulty of recycling No. 7 plastic, more is burned. Burning will produce harmful gases and pollute the environment, so we should minimize the use of this material, especially not to throw it at will.

So, how to identify No. 7 plastic? First of all, you need to look at the number, generally at the bottom of the plastic products can be found, if the number is 7, then it belongs to No. 7 plastic. In addition, No. 7 plastic feels soft and hard, has a thick texture, is not easy to deform, and is easy to identify.

Conclusion: Although No. 7 plastic is not very common, it has been widely used in our lives. At the same time of use, we should also pay attention to protect the environment and reduce the harm to the environment. If you have more questions about No. 7 plastic in this article, please leave a message in the comment area and we will try our best to answer them for you.

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