Plastic is a commonly used material, which has the advantages of light weight, corrosion resistance, abrasion resistance and good insulation, and is widely used in various fields. This article will introduce the basic properties and applications of plastics to help readers better understand plastic materials.
Basic Properties of Plastics
1. Physical Properties
Physical properties of plastics mainly include density, coefficient of thermal expansion, thermal conductivity, heat distortion temperature, heat resistance, cold resistance and so on. Among them, density refers to the mass of plastic per unit volume, the coefficient of thermal expansion refers to the rate of change of the volume of plastic under the change of temperature, thermal conductivity refers to the ability of plastic thermal conductivity, thermal deformation temperature refers to the temperature at which the plastic begins to deform after being heated to a certain temperature, heat resistance refers to the plastic is not easy to melt or decomposition at high temperatures, cold resistance refers to the plastic is not easy to become brittle at low temperatures.
2. Chemical properties
The chemical properties of plastics mainly include acid and alkali resistance, corrosion resistance, oxidation resistance, ultraviolet resistance. Among them, acid and alkali resistance refers to the plastic is not easy to be corroded by acids and alkalis, corrosion resistance refers to the plastic is not easy to be corroded by chemicals, oxidation resistance refers to the plastic is not easy to be oxidized by oxidizing agents, ultraviolet resistance refers to the plastic is not easy to be damaged by ultraviolet radiation.
3. Mechanical properties
The mechanical properties of plastics mainly include strength, toughness, hardness, modulus of elasticity and so on. Among them, strength refers to the plastic resistance to tensile, compression, bending and other forces, toughness refers to the plastic impact resistance, hardness refers to the hardness of the plastic surface, the modulus of elasticity refers to the elastic deformation of the plastic capacity.
4. Other properties
Plastics also have other properties, such as electrical insulation, transparency, wear resistance, processability and so on.
Applications of plastics
1. Industrial field
Plastics are widely used in the industrial field, such as the manufacture of automobiles, electrical appliances, instruments and other parts, the manufacture of pipelines, valves, pumps, and other equipment, the manufacture of packaging materials, building materials and so on.
2. Daily necessities
Plastics are widely used in the field of daily necessities, such as the manufacture of plastic bags, plastic bottles, plastic cups, plastic tableware and so on.
3. Medical field
Plastics are widely used in the medical field, such as the manufacture of medical syringes, infusion sets, surgical instruments and so on.
4. Environmental protection field
Plastics are widely used in the environmental protection field, such as the manufacture of garbage cans, garbage bags, recycling of waste plastics.
Operating Steps
1. Choose the right plastic material
When using plastic materials, you need to choose the right plastic material according to the specific application scenario. Different plastic materials have different characteristics and application scope, and need to be selected according to the specific situation.
2. Preparation of plastic materials
Preparation of plastic materials needs to be operated according to the specific type of plastic materials. Generally speaking, the preparation of plastic materials requires the processing of raw materials into a suitable form through heating and mixing.
3. Using plastic materials
When using plastic materials, it is necessary to operate according to the specific application scenarios. Different application scenarios require different methods and tools, which need to be selected according to the specific situation.