What is plastic made of? What material is plastic made of

using petroleum as raw material; The mined ** is transported to the petroleum processing plant, dehydrated, desalination, and then fractionated to make various fuel oils, such as gasoline, kerosene, diesel and so on. The raw material for the production of plastics is to carry out a cracking process called petroleum in petroleum, first produce ethylene, propylene and other raw gases, and then carry out addition polymerization, it is made: polyethylene, polypropylene such substances are called resins.

It is then thermally processed into various items called polyethylene plastic and polypropylene plastic.

Plastic: a material with plastic behavior, the so-called plasticity refers to the state when deformed when subjected to external force, and can still maintain the state when the force is canceled. The elastic modulus of plastic is between rubber and fiber, and it can be deformed to a certain extent when subjected to force.

Soft plastics are close to rubber, and hard plastics are close to fibers.

Plastics refer to materials that can flow and form in the process of processing with resin (or direct polymerization with monomers in the processing process) as the main component and additives such as plasticizers, fillers, lubricants, and colorants as auxiliary components.

Plastic is a synthetic polymer compound that can be freely changed. Plastic is a material made of monomer raw materials by synthesis or condensation reaction, which is composed of synthetic resin and fillers, plasticizers, stabilizers, lubricants, pigments and other additives, and its main component is synthetic resin.

Plastics can be divided into two categories: thermosets, which cannot be reshaped for use, and thermoplastics, which can be reproduced again and again.

Hello, this plastic is made of glue and melted at high temperature, and the model is even simpler.

The plastic is made of grease material from tree sheds. Generally speaking, the basic properties of plastics mainly depend on the properties of the resin, but additives will also play an important role, and some plastics are basically chains composed of synthetic resins, with little or no additives, such as plexiglass, polystyrene, etc.

Resin was originally named after lipids secreted by animals and plants, such as rosin, shellac, etc.

Plastics, synthetic rubber, and synthetic fibers form the three major synthetic materials that are indispensable in daily life.

Plastic is made of natural or synthetic resin as the main component, and various additives are added, which can be kneaded into various shapes and finally keep the shape unchanged.

Plastics are made of synthetic resin.

Expand knowledge: The raw material of plastic is a polymer, also known as resin, which is a polymer compound, which is polymerized by polyaddition or polycondensation reaction, mainly composed of synthetic resin and fillers, plasticizers, lubricants, pigments and other additives, which has the advantages of good insulation and low thermal conductivity.

Features of plastic:

1. Light specific gravity.

The specific gravity of plastic is about the same, and compared with metal materials, its weight only accounts for 1 2 of the same volume of aluminum, 1 5 of steel, and 1 8 of lead. In the case of porous foam, the specific gravity is much lighter than that of ordinary plastic. Due to the light gravity of plastics, it also has great advantages for products, such as plastic products are more lightweight, beautiful, easy to carry, and more convenient in transportation and storage, which is very suitable for the current use of daily plastic products.

2. Good chemical stability.

The chemical stability of plastics is very good, even if it encounters acids, salts, solvents, waste gases, etc., it cannot play a chemical role, and is often used to make various industrial, agricultural, civil and other plastic products. For example, polyethylene film is used in food packaging bags, drug packaging bags, fertilizer packaging containers, etc., which we usually use.

3. Good electrical insulation.

Plastics have good electrical insulation properties and are commonly used materials in modern electrical and electronic industries. Some plastics also have excellent high-frequency resistance and are often used in radio communications, radar and other equipment. There are also lamp plugs, switches, hair dryers, and handles for rolling knives. <>

1. Plastics are made of synthetic resin.

2. The main component of plastic is resin, resin refers to polymer compounds that have not been mixed with various additives, the basic properties of plastics are mainly determined by the nature of resin, but additives also play an important role, some plastics are basically composed of synthetic resins, without or less additives, such as plexiglass, polystyrene, etc.

Plastics are made of synthetic resin. The main component of plastic is resin. Resins are polymer compounds that have not been mixed with various additives.

The basic properties of plastics are mainly determined by the nature of the resin, but additives also play an important role. Some plastics are basically composed of synthetic resins with little or no additives, such as plexiglass, polystyrene, etc. Plastics can be divided into two categories: thermoset and thermoplastic, the former cannot be reshaped for use, and the latter can be reproduced.

The physical elongation of thermoplasticity is large, generally in 50% to 500%. The force does not completely change linearly at different elongations.

The different properties of plastics determine their use in industry, and with the advancement of technology, the research on plastic modification has not stopped. It is hoped that in the near future, plastics can be more widely used after modification, and can even replace materials such as steel and no longer pollute the environment.

Plastic packaging materials have the advantages of light weight, high strength, good impact resistance, transparency, moisture-proof, beautiful, stable chemical properties, good toughness and anti-corrosion, etc., and have widely replaced metal, wood, paper, glass, leather, etc. in the field of packaging, therefore, plastic packaging has played an irreplaceable role in reducing the pressure on resources and energy in China.

However, plastic packaging materials have a fatal weakness, that is, their natural degradation time is long, some for more than 100 years. The non-degradability of plastics leads to the long-term existence of their waste. Therefore, the use of plastic packaging waste is imminent.