The plastics that we normally use is not a pure substance. It is created by the preparation of numerous components, in which the substantial polymer (or synthetic resin) is its major element. In addition, in buy to improve the performance of plastics, a variety of auxiliary components should also be added in the polymer, this kind of as fillers, plasticizers, lubricants, stabilizers, coloring agents, and so on, so as to make the plastics have excellent efficiency.
Very first, synthetic resin
Synthetic resin is the primary part of plastics. The basic articles of synthetic resin in plastics is from forty% to one hundred%. Due to the fact of its big content, the character of synthetic resin often decides the mother nature of the plastics, so men and women frequently take resin as a synonym of plastics. In truth, resin and plastics are two distinct ideas. Resin is a uncooked polymer which has not been processed. Although for most plastics, apart from the resin as its principal part, there are also some other substances.
Fillers can increase the energy and heat-resistant high quality of the plastics, as nicely as reduced the price. For example, adding wooden flour into phenolic resin can drastically lessen the price, which tends to make the phenolic plastic as one particular of the cheapest plastics. At the exact same time, it can also substantially increase the mechanical power. Fillers can be divided into organic and natural filler and inorganic filler, with the former as wood flour, rags, paper and all types of textile fibers, and the latter as glass fibers, diatomaceous earth, asbestos, and carbon black.
Plasticizers can increase the plasticity and overall flexibility of the plastics, minimize brittleness, and make the plastics effortless to be processed and molded. Plasticizers are usually organic compounds with higher boiling stage, miscible with the resin, non-poisonous, odorless, and stable to light-weight and warmth. โรงงานสายรัดพลาสติก used plasticizers include phthalates, benzophenone, and so on.