Plastics materials are a group of synthetic materials that have become essential in today's world due to their versatility, durability, and low cost. These materials are used in a wide range of applications, from packaging and consumer goods to construction and automotive industries.
There are various types of plastics, classified based on their properties and the manufacturing process. These include polyethylene, polypropylene, polystyrene, polyvinyl chloride, nylon, and polycarbonate, among others.
Polyethylene is the most commonly used plastic and is often used in packaging materials such as plastic bags and containers. Polypropylene is similar to polyethylene but is more rigid, and thus, often used in products that require a stiffer material, such as automotive parts and furniture.
Polystyrene is a rigid and transparent plastic that is often used in products such as disposable cups, cutlery, and packaging materials. Polyvinyl chloride, commonly known as PVC, is a popular plastic for construction materials such as pipes, electrical cables, and window frames.
Nylon is a strong and flexible plastic used in various applications, such as clothing, carpet fibers, and mechanical parts. Polycarbonate is a durable and transparent plastic often used in products such as safety goggles, aircraft windshields, and electronic device screens.
While plastics have revolutionized various industries, the disposal of plastic waste has become a significant environmental concern. Recycling and proper disposal of plastics materials are crucial to reducing plastic pollution and preserving the environment for future generations.
Overall, plastics materials have significantly impacted modern society, providing solutions for various industrial and consumer needs. As research and innovation continue to advance, it is expected that even more sustainable and eco-friendly plastics materials will emerge.
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2CY, KCB gear pump failure analysis and troubleshooting: I. Less oil or less oil Production reasons: 1, inhalation height exceeds the rated value 2, suction pipe leakage 3, the rotation direction is not 4, the suction pipe is blocked or the valve is closed 5, the safety valve stuck or injury 6, the liquid temperature is low and the viscosity increases Exclusion: 1, improve the level of inhalation 2, check the joints, the best sealing material seal 3, then pump the direction shown in the correct 4 , Check the pipeline is clogged, the valve is open 5, open the safety valve cleaning and fine sand abrasive grinding hole, the use of anastomosis 6, preheat the liquid or reduce the pressure to exclude two. Seal oil leakage Production reasons: 1, seal wear 2 , Packing seal packing wear 3, mechanical seal wear or scratches and other defects 4, mechanical seal spring failure troubleshooting: 1, replace the seal 2, adjust the packing gland tightness, replacement or replacement filler 3, replace or re-grinding 4 , Replacement 3. Noise or vibration Large production reasons: 1, suction and filter plugging 2, the suction tube into the liquid level Shallow 3, the air into the pipe 4, the exhaust pipe resistance is too large 5, the gear bearing or side plate serious wear 6, the viscosity of inhaled liquid is too large 7, the inhalation height exceeds the rated value Exclusion method: 1, to eliminate gear pump dirt on the filter 2, the suction tube growth below the surface of the liquid level 3, check the connections to seal it 4, check the discharge pipe and the valve is blocked 5, remove the cleaning and repair defects or replacement 6, heating viscosity or treatment 7, Reduce the suction height and shorten the suction pipe length