Plastic additives, also known as plastic additives, are some of the compounds that must be added to improve the processing properties of polymers (synthetic resins) during molding or to improve the properties of the resin itself. The development of the plastics industry and the continuous advancement of processing technology have led to the continuous expansion of the application of plastics and the increasing variety of plastic additives . It has now become a fine chemical industry with a wide range of products. The addition of plastic additives not only facilitates processing but also improves product performance, and also reduces costs and energy, while increasing productivity and enhancing the product value of the product.
Plastic additives have many advantages: 1 product performance is improved, 2 cost is reduced, energy is saved, 3 productivity is increased, 4 product value of the product is enhanced.
For example, in order to reduce the molding temperature of the polyvinyl chloride resin, the plasticizer added to soften the product; and to add a foaming agent for the preparation of a lightweight, vibration-resistant, heat-insulating, sound-insulating foam; some plastic heat The decomposition temperature is very close to the molding processing temperature, and it cannot be formed without adding a heat stabilizer; for example, polyvinyl chloride is a polar polymer, and the molecular aggregation is high, which is a brittle hard substance. If plasticizer is not added, it cannot be Made of soft polyvinyl chloride; polystyrene is a brittle plastic, if no rubber material is toughened, it can not expand the scope of application; some polymers such as polyvinyl chloride and ABS, etc., during processing, do not add The lubricant has poor fluidity and is easy to stick to the mold, making processing difficult and the product quality is inferior. Therefore, plastic additives occupy a particularly important position in plastic molding processing.
For example, without antioxidants and light stabilizers, polyethylene and polypropylene are easy to age when used outdoors, and the service life is greatly shortened; without flame retardants, reinforcing agents, static inhibitors, plastics cannot be used for aviation. aerospace. Departments of electronics, construction, transportation, etc.; without colorants such as dyes or pigments, plastic products lose the competitive value of goods due to a single color tone.
It can be seen that the plastic auxiliaries can not only make the polymer process clean, but also largely compensate for the lack of the polymer itself, such as improving the performance of the product and prolonging the service life. Therefore, it is no exaggeration to say that without the cooperation of processing aids, there is no development of the plastics industry, and plastic additives have become an indispensable part of plastic products.
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