在日常生活中，使用很多PE袋來包裝產品，但包裝材料的名稱和種類很多。當我們需要使用PE袋時，我們用什么方法來識別它? 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薄膜廣泛用于制造塑料袋、塑料薄膜、牛奶桶等產品。其名稱也叫聚乙烯，是耐多種有機溶劑、多種酸堿腐蝕，但不耐氧化的酸，如硝酸，聚乙烯會在氧化環境中被氧化。 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. 聚乙烯在薄膜狀態下可以被認為是透明的，但在有團塊存在的情況下，它是不透明的，因為它里面有大量的晶體，光有強烈的散射。聚乙烯的結晶程度受支鏈數的影響。聚乙烯的晶體熔化溫度也受枝晶數的影響，枝晶數在90°c到130°c之間，枝晶數越多，熔化溫度越低。聚乙烯單晶通?？梢栽?30℃以上的二甲苯中溶解高密度聚乙烯制備。 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袋結構:- 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.
識別PE袋簡單的方法如下: The simplest way to identify PE bags is as follows: 1. 切一小塊放入水中。PE漂浮在水面上。 1. Cut a small piece into water. PE floats on the water. 2、點燃后，PE有蠟燭的氣味。 2. PE smells of candles after ignition. 3.看起來PE塑料袋是透明的。 3. It seems that PE plastic bags are transparent. 4. PE塑料袋手感光滑舒適。 4. PE plastic bags feel smooth and comfortable. 5、拉呀拉，很難斷。 5. Pull, pull and pull. It's hard to break. PE包的識別其實很簡單，一放進水里，一燒一摸一拉就行了。 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.
