Is pvc a high pressure plastic, is pvc a plastic

The production process of PVC determines that it does not belong to high-pressure plastics, and the general PVC production process can be divided into calcium carbide method, ethylene method and imported (EDC, VCM) monomer method, and it is customary to refer to ethylene method and imported monomer method as ethylene method.

Low-density polyethylene (LDPE) is usually produced by the high-pressure method, so it is also called high-pressure polyethylene. Because the polyethylene molecular chain produced by the high-pressure method contains more long and short branched chains (the average number of branched chains contained in every 1000 carbon chain atoms is 21), the crystallinity is low (45%-65%), the density is small (lightweight, flexible, low temperature resistance, impact resistance is good). LDPE is widely used in the production of films, pipes (soft), cable insulation and sheaths, artificial leather, etc.

High-density polyethylene (HDPE) is mainly produced at low pressure, so it is also known as low-pressure polyethylene. HDPE molecule has few branched chains, high crystallinity (85%-90%), high density, high service temperature, good hardness, mechanical strength and chemical resistance. It is suitable for hollow blow molding, injection molding and extrusion of various products (hard), such as various containers, nets, packing belts, and can be used as cable cladding, pipes, profiles, sheets, etc.

I want to figure out, the PP forum, a lot of PVC film information, there are a lot of friends who do PVC film and printing bag making, many of them are front-line operators, responsible for technology. There are also PVC particles.

Strictly speaking, PVC should be a plastic material

The main component of PVC is polyvinyl chloride.

At the same time, other components can be added to increase its toughness and ductility.

The density of this material is about 2 grams per cubic meter, and it has a relatively good compression resistance.

So it can be used as some separate materials.

PVC material.

It has a very good insulating effect and chemical properties.

It is also relatively stable, so the range of use is particularly wide. In the later stage, it can also be reused and made into other products, physical properties.

It's still very prominent.

Application of PVC material

There are many materials made of PVC, the most common is PVC pipes and drainage pipes, which can be made of PVC material, because of its strong compressive capacity and corrosion resistance, so it is the most suitable for use as a pipe material.

When installing the circuit, we can plug the wire into the PVC conduit, because it has better stability, and has an insulating effect, and it plays a greater role in the circuit.

There are also many PVC products in daily life, such as PVC sandals, which can also be used as soles, including some toys and accessories for children, and can also be made of PVC materials.

PVC plastic, in the chemical field, refers to the compound polyvinyl chloride. Its natural color is yellowish and semi-tan, and the surface is shiny. According to the different amounts of additives, it can be divided into soft and hard PVC, soft products are flexible and tough, feel sticky, hard products have high hardness, and the sail will appear whitening in twists and turns.

Common Yunyu PVC plastic products: plates, pipes, shoe soles, toys, doors and windows, wire skins, stationery, etc.

PVC is a widely used synthetic plastic, the full name is polyvinyl chloride (polyvinyl chloride). It is usually made from polyvinyl chloride monomer and is a thermoplastic. The characteristics of PVC include light weight, high transparency, high mechanical strength, good corrosion resistance, good insulation performance, and easy processing.

PVC is one of the most used plastics and is widely used in various fields such as construction, water treatment, medicine, electronics, automobiles, packaging, sporting goods, etc.

In the construction field, PVC is often used to make building materials such as pipes, wall panels, window frames, floors, etc.; In the medical field, it is used to make medical materials such as infusion bags, surgical gowns, and artificial blood vessels; In the field of electronics, PVC is an important material for making wires and cables. At the same time, PVC has the ability to be degradable and can be environmentally friendly through reuse.

Several common application areas of PVC:

1.Construction: PVC pipes, wall panels, window frames, floors and other building materials, because PVC has good characteristics such as waterproof, anti-corrosion, thermal insulation, sound insulation, etc., so it is widely used in construction.

2.Medical devices: PVC can be made into infusion bags, blood bags, surgical gowns, artificial blood vessels and other medical devices. PVC has the characteristics of high transparency, bending resistance, non-toxicity and tastelessness, and meets the requirements of medical materials.

3.Wire and cable: PVC is one of the important materials for making wires and cables. PVC wire and cable has good insulation performance, pressure resistance, wear resistance, beautiful appearance, etc., and is also relatively economical, so it has been widely used.

4.Packaging: PVC film is widely used in the packaging of food, medicine, cosmetics and other industries, and can provide excellent tightness and gloss.

5.Auto parts: PVC can be used to make automotive interiors, seats, dashboards, door panels and other parts, it has the characteristics of waterproof, grease resistance, light resistance, soft and comfortable. <>

PVC is polyvinyl chloride plastic, obviously the most essential difference is that the plastic contains chlorine inside, so it can not be in direct contact with drinking water or food, and secondly, because the polarity of the PVC plastic molecular chain is too large and the plasticity is poor, it is often necessary to add more than 40% plasticizer (plasticizer), and often cannot directly contact drinking water or food clusters.

The so-called ordinary plastics, which may refer to LDPE, are often harmless to humans and animals, but the mechanical properties and cost advantages of PVC also determine that it will be widely used.

The processing of PVC is very dependent on some additives, and PVC resin powder itself cannot be processed into any products, and stabilizers, lubricants, processing aids, etc. must be added, and plasticizers in soft products are also necessary.

PVC resin itself and other general-purpose plastics are heavy in the synthesis process and can not rely on petroleum by-products, so it is almost infiltrated into the relationship between the shed and the oil industry chain is not as large as other general-purpose plastics.

PVC material is relatively large in the heavy use of building materials, because he has an obvious advantage, that is, in the process of external use, because of its different decomposition mechanism, the degree of decline in its own physical properties is relatively small, and it is relatively low.

<>PVC, also known as polyvinyl chloride, is a polymer formed by polymerization under the action of light and heat. The structure of PVC is in the form of white powder, and according to the different application ranges, PVC can be divided into: general-purpose PVC resin, high polymerization PVC resin, and cross-linked PVC resin.

General-purpose PVC resin is formed under the action of gravitational agent, high-polymerization PVC resin is formed by adding chain growth agent, and cross-linked PVC resin is formed after adding diene and polyene.