The plastic we usually use is not a pure substance, it is formulated from many materials. Among them, high molecular polymers are the main components of plastics. In addition, in order to improve the performance of plastics, various auxiliary materials, such as fillers, plasticizers, lubricants, stabilizers, colorants, etc., must be added to the polymer. Good performance plastic.
Plastic bag synthetic resin: High molecular polymer, also called synthetic resin, is the most important component of plastic, and its content in plastic is generally 40% to 100%. Due to the large content and the properties of resins that often determine the properties of plastics, people often regard resins as synonymous with plastics.
Plastic bag fillers: fillers are also called fillers, which can improve the strength and heat resistance of plastics and reduce costs. For example, adding wood powder to phenolic resin can greatly reduce the cost, making phenolic plastic one of the cheapest plastics, and at the same time, it can significantly improve the mechanical strength. Fillers can be divided into organic fillers and inorganic fillers, the former such as wood flour, rags, paper and various fabric fibers, etc., the latter such as glass fiber, diatomaceous earth, asbestos, carbon black and so on.
Plastic bag plasticizers: Plasticizers can increase the plasticity and softness of plastics, reduce brittleness, and make plastics easy to process and shape. Plasticizers are generally resin-miscible, non-toxic, odorless, high-boiling organic compounds that are stable to light and heat. The most commonly used are phthalates.
Plastic bag stabilizer: In order to prevent the synthetic resin from being decomposed and destroyed by light and heat during processing and use, and prolong the service life, a stabilizer should be added to the plastic. Commonly used are stearate, epoxy resin and so on.
Plastic bag colorants: Colorants can give plastics a variety of bright, beautiful colors. Organic dyes and inorganic pigments are commonly used as colorants.
Plastic bag lubricant: The function of the lubricant is to prevent the plastic from sticking to the metal mold during molding, and at the same time make the surface of the plastic smooth and beautiful. Commonly used lubricants are stearic acid and its calcium and magnesium salts.
In addition to the above additives, flame retardants, foaming agents, antistatic agents, etc. can also be added to the plastics to meet different application requirements.
Post time: Mar-11-2022
