日常生活中怎么辨别PE袋？

日常生活中怎么辨别PE袋？

在日常生活中，使用很多PE袋来包装产品，但包装材料的名称和种类很多。当我们需要使用PE袋时，我们用什么方法来识别它?
In daily life, many PE bags are used to pack products, but there are many kinds and names of packaging materials. When we need to use PE bags, how do we identify them?
PE薄膜广泛用于制造塑料袋、塑料薄膜、牛奶桶等产品。其名称也叫聚乙烯，是耐多种有机溶剂、多种酸碱腐蚀，但不耐氧化的酸，如硝酸，聚乙烯会在氧化环境中被氧化。
PE film is widely used in the manufacture of plastic bags, plastic films, milk drums and other products. Polyethylene, also known as polyethylene, is an acid resistant to various organic solvents and acid-base corrosion, but not to oxidation, such as nitric acid, polyethylene will be oxidized in an oxidized environment.
聚乙烯在薄膜状态下可以被认为是透明的，但在有团块存在的情况下，它是不透明的，因为它里面有大量的晶体，光有强烈的散射。聚乙烯的结晶程度受支链数的影响。聚乙烯的晶体熔化温度也受枝晶数的影响，枝晶数在90°c到130°c之间，枝晶数越多，熔化温度越低。聚乙烯单晶通常可以在130℃以上的二甲苯中溶解高密度聚乙烯制备。
Polyethylene can be considered transparent in the film state, but in the presence of clusters, it is opaque because there are a large number of crystals in it, and light scatters strongly. The crystallinity of polyethylene is affected by the number of branched chains. The melting temperature of polyethylene is also affected by the dendrite number. The dendrite number ranges from 90 C to 130 C. The higher the dendrite number, the lower the melting temperature. Polyethylene single crystals can usually be prepared by dissolving high density polyethylene in xylene above 130 C.
PE袋结构:- ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2 -ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2。

PE bag structure: - ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2-ch2.

识别PE袋简单的方法如下:
The simplest way to identify PE bags is as follows:
1. 切一小块放入水中。PE漂浮在水面上。
1. Cut a small piece into water. PE floats on the water.
2、点燃后，PE有蜡烛的气味。
2. PE smells of candles after ignition.
3.看起来PE塑料袋是透明的。
3. It seems that PE plastic bags are transparent.
4. PE塑料袋手感光滑舒适。
4. PE plastic bags feel smooth and comfortable.
5、拉呀拉，很难断。
5. Pull, pull and pull. It's hard to break.
PE包的识别其实很简单，一放进水里，一烧一摸一拉就行了。
The identification of PE bags is actually very simple, as soon as they are put into the water, they can be burned, touched and pulled.