Polypropylene is not as sturdy as polyethylene, but it has benefits that make it the better choice in some situations. One of these situations is creating hinges from a plastic, such as a plastic lid on a travel mug. Over time, plastics wear out from the repetitive stress of being opened...
The material used to make plastic bags is usually ___. A. polyethylene B. polypropylene C. polystyrene D. polyvinyl chloride 相关知识点: 试题来源: 解析 A。塑料袋通常由聚乙烯制成。了解塑料袋的材料有助于我们认识化学物质在日常生活用品中的应用以及对环境的影响。
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Environmental Impacts of Polyethylene: Polyethylene is the most used plastic polymers in the world, often making up plastic packaging. As it is not biodegradable, plastics that have been incorrectly disposed of have accumulated in our oceans, harming wildlife. It is also often incinerated and as mo...
Polystyrene is a colorless and rigid plastic that can be molded when in a liquid state. With a wide variety of uses, polystyrene...
High-density polyethylene (HDPE) is among the most common types of plastic worldwide. Some HDPE products may be food grade, while others are not appropriate for food storage. Boasting a fairly high recovery rate, HDPE is also one of the most recycled plastics. Once HDPE has been used and ...
The insulation for the hose consists of several sequential layers of synthetic material felts and synthetic material foils, preferably a total of three groups, each consisting of a polyester felt, an interior foil of polyethylene, and an exterior foil of polyethylene terephthalate. The outermost ...
a甜美优雅 Delightful graceful[translate] aThe type of outer packaging is paper bags and plastic composite.The type of inner lining packaging is Polyethylene bags. 外部包装的类型 是内部沿着人排成行包装的纸包和塑料 composite.The 类型 是 Polyethylene 包。[translate]...
Nongfu sceptics point out that the bottled-water industry, in China and elsewhere, has few technical barriers to entry. The main raw material is polyethylene terephthalate (PET), a plastic that is cheap and easy to process. No special knowledge is required. Evergrande, a Chinese property develop...
LDPE is an acronym for low-density polyethylene. This type of plastic can be identified in many products we use with the resin code, or recycling number, 4.