Under normal circumstances, the motor casing is not liv […]
Under normal circumstances, the motor casing is not live, but when the motor insulation is damp, the casing is live. If someone touches it at this time, an electric shock accident will occur. Therefore, the motor housing should have a reliable grounding wire.
There are many types of plastic parts. Some plastic parts are pure resin, such as polystyrene and polyethylene. Some plastic parts also contain other auxiliary materials, such as various fillers, stabilizers, plasticizers, colorants, etc.
Plastic parts manufacturers introduce the classification of additives:
Plasticizers can increase the flexibility, plasticity, and extensibility of plastics, reduce the flow temperature and hardness of plastics, and are conducive to the molding of plastic products. Commonly used are sebacic acid esters, phthalic acid esters, chlorinated paraffin and camphor.
The role of plastic additives in plastics:
Plastic additives The main purpose of adding additives to plastics is to improve processing performance, increase efficiency and reduce costs. Additives occupies a small proportion in plastic materials, but they have a great impact on the quality of plastic products. Different types of plastics require different types and amounts of additives due to different molding processing methods and use conditions.