Plastic products are collectively referred to as daily […]
Plastic products are collectively referred to as daily necessities and industrial products processed from plastics. Including plastic injection molding, plastic molding and other products of all kinds of products, plastic products can be seen everywhere in the home, different products with different uses of different properties, can detect hot wire 400-601-8236 Some plastics are pure resin itself Such as polyethylene, polystyrene, etc., is called a single component plastic. Some plastics contain, in addition to synthetic resins, other auxiliary materials such as plasticizers, stabilizers, colorants, various fillers, etc., called multi-component plastics.
Synthetic resin refers to a high molecular compound (monomer) which has a certain synthesis condition by using coal, calcium carbide, petroleum, natural gas and some agricultural and sideline products as a main raw material, and then polymerized by a chemical or physical method. These compounds are similar in nature to natural resins (such as rosin, amber, shellac, etc.) but are superior in performance to natural resins. For example: synthetic resin dentures.
The content of the synthetic resin accounts for 40% to 100% of the total composition of the plastic, and acts as a bond, which determines the main properties of the plastic, such as mechanical strength, hardness, aging resistance, elasticity, chemical stability, photoelectricity. Sex and so on. Plastic additives The purpose of adding additives to plastics is mainly to improve processability, improve performance and reduce costs. Additives account for a small proportion of plastic materials, but have a great impact on the quality of plastic products. Different types of plastics vary in the type and amount of additives required due to different molding methods and conditions of use.
The main additives are as follows: Plasticizers can increase the softness, elongation, plasticity of plastics, reduce the flow temperature and hardness of plastics, and are beneficial to the molding of plastic products. Commonly used phthalates, sebacates, chlorinated paraffins and camphor. The most common thing we have is camphor. We all know that during the processing, storage and use of plastic products, under the action of light, heat and oxygen, aging, embrittlement and cracking will occur. In order to delay and prevent the occurrence of aging, stabilizers must be added.
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