According to the different use characteristics of various plastics, we usually divide plastic into three categories: general plastics, engineering plastics, and special plastics. According to the different physical and chemical properties of various plastics, plastics can be divided into two categories: thermosetting plastics and thermoplastics. The main parts of our factory are made of general-purpose plastics and thermoplastics. Commonly used are PP, PVC, ABS, etc.
We are a plastic broom supplier. Now let’s talk about the performance and use of commonly used plastic materials.
General-purpose plastics:
Generally refers to plastics with large output, wide application, good formability, and low price. There are five major varieties of general-purpose plastics, namely polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) and acrylonitrile-butadiene-styrene copolymer (ABS). These five categories of plastics occupy the vast majority of plastic raw materials, and the rest can be classified into special plastics such as PPS, PPO, PA, PC, POM, etc., which are used in daily life products. It is used in high-end fields such as engineering, defense and science, and technology, such as automotive, aerospace, construction, and communications. Plastics can be classified into thermoplastics and thermosets according to their plasticity classification. In general, thermoplastic products can be recycled, while thermosetting plastics cannot. According to the optical properties of plastics, they can be divided into transparent, translucent and opaque materials such as PS, PMMA, AS, PC, etc. Most other plastics are opaque plastics.
1. Polyethylene:
Commonly used polyethylene can be classified into low-density polyethylene (LDPE), high-density polyethylene (HDPE) and linear low-density polyethylene (LLDPE). Among the three, HDPE has better thermal, electrical and mechanical properties, while LDPE and LLDPE have better flexibility, impact properties and film forming properties. LDPE and LLDPE are mainly used for packaging film, agricultural film, plastic modification, etc., while HDPE is widely used in various fields such as film, pipe, and injection daily necessities.
2. Polypropylene:
Relatively speaking, polypropylene has more varieties and more complex uses. There are many fields, such as homopolypropylene, block copolymer polypropylene (Copp) and random copolymer polypropylene (Rapp). According to different uses, homopolymerization is mainly used in the fields of wire drawing, fiber, injection, BOPP film, etc. Copolymer polypropylene is mainly used in household appliance injection parts, modified raw materials, daily injection products, pipes, etc. Used in transparent products, high-performance products, high-performance pipes, etc.
3. Polyvinyl chloride:
Due to its low cost, the product has self-flame retardant properties, so it is widely used in the construction field, especially for sewer pipes, plastic steel doors and windows, plates, artificial leather and so on.
4. Polystyrene:
As a transparent raw material, it can be used in a wide range of applications, such as automotive lampshades, daily transparent, transparent cups, cans, etc.
5. ABS:
It is a versatile engineering plastic with outstanding physical and mechanical properties. It is widely used in household appliances, panels, masks, assemblies, accessories, etc., especially household appliances such as washing machines, air conditioners, refrigerators, electric fans, etc. The dosage is very large, and it is also widely used in a plastic modification.
Thermoplastic:
Refers to plastics that melt after heating, can flow to the mold after cooling, and then melt after heating; can be heated and cooled to produce reversible changes (liquid-solid state) ) is a so-called physical change. General-purpose thermoplastics have a continuous use temperature below 100 ° C. Polyethylene, polyvinyl chloride, polypropylene, and polystyrene are called four general-purpose plastics. Thermoplastic plastics are also classified into hydrocarbons, vinyl containing polar genes, engineering, and cellulose. It becomes soft when heated, hardens when cooled, and can be softened and hardened repeatedly to maintain a certain shape. It is soluble in certain solvents and has meltable and soluble properties. Thermoplastics have excellent electrical insulation, especially polytetrafluoroethylene (PTFE), polystyrene (PS), polyethylene (PE), polypropylene (PP) have very low dielectric constant and dielectric loss, suitable Used as high frequency and high voltage insulation materials. Thermoplastics are easy to shape, but have low heat resistance and are prone to creep. The degree of creep varies with load, ambient temperature, solvent, and humidity. In order to overcome these weaknesses of thermoplastics and meet the needs of applications in space technology, new energy development, etc., countries are developing melt-formable heat-resistant resins such as polyetheretherketone (PEEK) and polyethersulfone (PES). , polyaryl sulfone (PASU), polyphenylene sulfide (PPS), and the like. The composite materials using them as matrix resins have high mechanical properties and chemical resistance, can be thermoformed and welded, and have better interlaminar shear strength than epoxy resins. If polyetheretherketone is used as a matrix resin and a carbon fiber composite material, the fatigue resistance exceeds that of epoxy/carbon fiber. It has good impact resistance, good creep resistance at room temperature, good processability, and can be used continuously at 240-270 °C. It is an ideal high temperature resistant insulating material. The composite material made of polyethersulfone as matrix resin and carbon fiber has high strength and hardness at 200 ° C, and can maintain good impact resistance at -100 ° C; non-toxic, non-combustible, least smoke, radiation resistance Well, it is expected to be used as a key component of the spacecraft, and it can be molded into a radome.
If you need to know more about the material of the broom, then pay more attention to the broom manufacturers.
