| Analysis of Bags and Buckles 1.PA (NYLON) nylon has good toughness, high impact strength, corrosion resistance, weather resistance, good processing performance; the disadvantage is that the product after the dehydration is easy to crisp, need to boil. Is one of the four major engineering plastics. When burning yellow flame, take the bubble, blow out after the white smoke, the smell of hair burning. 2. PC polycarbonate toughness is good, strength; products shiny transparent. One of the four major engineering plastics. Burning bubbles, from the fire extinguished, take white smoke. 3. ABS height without broken gum It is composed of acrylonitrile (A) + butadiene (B) + styrene (S) composition of the compound; hard texture, impact resistance, landing metal sound. One of the four major engineering plastics. Burning yellow flame, black smoke, blow out after the black smoke. According to the American Society for Testing and Materials under the definition of plastic is a high molecular weight organic matter as the main component of the material, it is completed in the processing of solid-state shape, in the manufacture and increase [1] process, Flow to shape. Buckle can be divided into two categories of thermosetting and thermoplastics, the former can not be re-used, the latter can be repeated production. There are two types of plastic polymer structure: the first is a linear structure, with this structure of the polymer compounds known as linear polymer compounds; the second is the body structure, with this structure of the polymer Known as body polymer compounds. Some polymers with branches, known as branched polymers, are linear structure. Some polymers, although intermolecular cross-linking, but less cross-linking, known as the network structure, belonging to the body structure. The main component of plastic is synthetic resin. The term "resin" is originally named by the secretion of lipids from animals and plants, such as rosin, shellac, etc., the current resin is not yet mixed with a variety of additives and high polymer. Resin accounts for about 40% to 100% of the total weight of the plastic. The basic properties of the plastic are mainly determined by the nature of the resin, but the additive also plays an important role. Some plastics are basically composed of synthetic resin, with or without additives, such as plexiglass, polystyrene and so on. The so-called plastic, in fact, it is a synthetic resin, the shape of natural resin with pine resin similar, but also through the chemical force to synthesis, and is called plastic. |
