The plastics that we usually use is not a pure compound. It is produced by the preparation of several resources, in which the higher polymer (or synthetic resin) is its major part. In addition, in buy to improve the overall performance of plastics, a selection of auxiliary resources ought to also be extra in the polymer, these kinds of as fillers, plasticizers, lubricants, stabilizers, coloring brokers, and so on, so as to make the plastics have good efficiency.
Very first, artificial resin
Synthetic resin is the major component of plastics. The general content of synthetic resin in plastics is from forty% to one hundred%. Due to the fact of its huge material, the character of artificial resin often establishes the character of the plastics, so folks often just take resin as a synonym of plastics. In truth, resin and plastics are two diverse ideas. Resin is a uncooked polymer which has not been processed. Whilst for most plastics, apart from the resin as its principal part, there are also some other substances.
Fillers can boost the energy and warmth-resistant high quality of the plastics, as nicely as reduce the cost. For สายรัดพลาสติก , incorporating wood flour into phenolic resin can drastically reduce the expense, which makes the phenolic plastic as one of the cheapest plastics. At the very same time, it can also drastically improve the mechanical power. Fillers can be divided into natural filler and inorganic filler, with the former as wood flour, rags, paper and all sorts of textile fibers, and the latter as glass fibers, diatomaceous earth, asbestos, and carbon black.
Plasticizers can boost the plasticity and adaptability of the plastics, lessen brittleness, and make the plastics effortless to be processed and molded. Plasticizers are usually organic and natural compounds with high boiling level, miscible with the resin, non-toxic, odorless, and stable to gentle and warmth. The frequently used plasticizers consist of phthalates, benzophenone, and so on.