Polycarbonate (PC)

Description

Brand: LOTTE

Country of manufacture: South Korea

Grade: 1100U

Application :

These materials are used in many industries, especially in automotive, electrical and electronic industries, bulletproof glass, medicine, household appliances, etc. PC1100U contains UV stabilizers to prevent degradation of polycarbonate end products from sunlight.

What is Polycarbonate?

Polycarbonate (in English: Polycarbonate)

belongs to the family of thermoplastic polymers; And it is widely used in the fields of molding and thermal changes. These types of plastics are widely used in modern chemical industries.

Polycarbonate is the hardest transparent material that is used as a suitable alternative to glass in various construction sectors.

Polycarbonate is placed in the category of transparent and flexible thermoplastics. High strength, suitable heat resistance, ability to use in different colors and designs, resistance to penetration of ultraviolet rays, good stability, etc. have made this polymer to be used in various cases. One of the most practical forms of this product is its sheet, which is widely used in household, agricultural, electrical and electronic applications, etc. In the following, we will learn more about the characteristics, production methods and applications of this polymer.

This compound generally has high hardness and strength against impact even at high temperatures, low moisture absorption, high electrical and thermal resistance and good oxidation resistance are the properties of this thermoplastic, it is also biologically neutral and has good resistance to It has chemicals. The indicators that have made this polymer find many engineering applications are:

High strength

High dimensional stability

Good electrical properties

This polymer can be used using the usual methods of injection molding and extrusion techniques to produce a variety of resistant materials. It can also be sterilized by standard methods and used in medicine.

Mechanical properties of polycarbonate:

Density: 1.22-1.2 g/cm3

Maintaining toughness (resistance to breaking as a result of applying stress) from -20 to 140 degrees Celsius

Boiling point: 155 degrees Celsius

Indications

In the automobile industry for the interior decoration of the car, making dashboards and its accessories, making bumpers and interior panels and light glasses of modern cars, in the hologram production industry at the recombine stage in the production of master shim nickel, in the health and medical industries to make transparent bottles for Food and pharmaceutical packaging, production of various medical and industrial glasses, as well as the production of eye lenses in different colors, dialysis, endoscopy and blood transfusion equipment, and the production of needle-free ampoules, in the electrical and computer industries for the production of electrical connectors, electrotechnical equipment, the production of discs compact (CD), DVDs, computer decorations and covers, and in safety industries for making helmets, safety glasses, gas masks and protective covers, as well as in military industries for making resistant glass in front of fighter planes and making bulletproof glass.

The main uses of this product can be summarized in the following:

Home Appliances

office Equipment

Electrical systems, switches and enclosures

Compact discs

Medical Equipment

Food container and packaging

Glazing and lighting applications

Safety glasses

Polycarbonate grades and applications

Various commercial grades of this chemical are produced and supplied, the main difference of which is the molecular mass, the presence or absence of the second polyhydroxy compound and additives.

Polymers with a molecular weight of less than 20,000 are usually not suitable for plastic use, while polymers with a molecular weight of more than 50,000 are generally converted into films by solution casting.

Polymers with low molecular weight (18000 to 32000) can be used for molding thin walls, but in amounts less than 18000, the polymer becomes more fragile and has less resistance to stress.

Additives such as isooctylphenols are used to control the molecular mass.

Viscose grades are suitable for extrusion and blow molding, and are also claimed to reduce splashing during fire.

One of the forms of this polymer, which is used in many cases after processing, is polycarbonate sheet.

The sheet of this product is a good alternative to glass, acrylic and other polyethylene membranes. The impact resistance of these sheets is 250 times higher than glass, it is resistant to UV rays, and it is also bulletproof and light.

Flame resistance, flexibility and stability against weather conditions and preventing the entry of ultraviolet rays are among the other advantages of these sheets.

Polycarbonate sheets can be used for windows, roofs, fences, bulletproof glass windows or ceiling models to prevent ultraviolet rays from entering.

Application

construction

Transportation Industry

Applications of glass

Safety glass function

Roof windows, partitioning, decorative domes, chamber building

Indoor or outdoor stadiums

Pool cover

Greenhouse cover

Covering the roof of the arcade and bazaar

Covering the skylights of warehouses

Covering the skylights of meeting halls

chemical properties

Polycarbonate sheets are resistant to organic and mineral acids, oils and neutral salt solutions, aliphatic hydrocarbons and alcohols at room temperature. The chemical resistance of these sheets against many cleaning materials, sealants and adhesives in the market has been determined according to the results of numerous tests.

Impact and scratch resistance

The impact resistance of polycarbonate sheets is 250 times that of glass of the same thickness. All kinds of polycarbonate sheets show resistance close to glass against scratches in very tough test conditions.

Tensile and bending resistance (flexibility)

The tensile strength of polycarbonate sheets is more than 70 newtons per square millimeter (N/mm²) at the limit of the physical yield of these sheets, the bending strength of these sheets is about 2500 newtons per square millimeter (N/mm²), which are considered as desirable resistance. .

Thermal insulation and energy saving

Polycarbonate sheets absorb sunlight and thus reduce the cost of air conditioning in the summer season. This feature also saves fuel in winter, and due to its better insulating properties than glass, it can save up to 30 liters of liquid fuel per year. save per square meter.

Self-extinguishing and inflammability

Polycarbonate sheets do not catch fire, do not ignite and melt slowly at the high temperature of the fire, preventing the fire from spreading and extinguishing by itself.

Resistance to UV rays and other weather conditions

Due to its anti-UV coating, this product has a very high resistance to this ray, and its color does not change due to the sun’s rays, and it maintains its transparency for a long time.

Polycarbonate production method

Different parts of polycarbonate production unit

Polycarbonate synthesis

Polycarbonate solution washing

Solvent recycling

Evaporation and granulation

Primary treatment of exhaust gases

Blowers station and intermediate tanks for polycarbonate products

Polycarbonate product packaging and storage

Polycarbonate alloying section and alloyed product packaging and storage

agriculture

Polycarbonate is used in the construction of greenhouses due to its 250 times strength, better light transmission compared to glass and plastic, energy insulation, long life span, light weight and easy installation in the roof or walls of greenhouses. The attention of farmers is in the greenhouse plant industry.

When buying greenhouse polycarbonate, it is very important to pay attention to the type and thickness of polycarbonate sheets. The price of polycarbonate sheet will be lower than glass due to its light weight.

decoration

Being in different colors and textures has made it possible to use this polymer instead of glass in different places. It can also be used as a light separator in the entire space.

Electrical and electronic industries

Many electrical and electronic equipment such as sensors, connectors, relays, computers, etc. They are made of this chemical due to their low weight and high strength. The hollow form of this polymer is suitable for electrical and electronic applications because it is a very good insulator against heat.

Automobile industry

High workability, dimensional stability, strength, low moisture absorption and good heat resistance have made it used in the manufacture of many car parts. These parts include lights, radiator plugs, internal lenses, door handles and other transparent components of the car.

Application in CNC and 3D printers:

This product is a suitable candidate for machining and turning processes. In this PC application, white and light black colors are usually used, and usually after the process is done, a polishing and sanding process should be done in order to create transparency and remove posts and heights.

Since this product is a thermoplastic, 3D printers will be able to 3D print using it and the FDM process. At first, these materials are made in the form of strings, and the 3D printer heats these strings and puts them together in a three-dimensional and layered manner to make the desired shape.

What are the different uses of polycarbonate sheets?

Pool and greenhouse cover
construction
Transportation Industry
Partitions, decorative domes, skylights and cubicles
safety glass
Covering the roof of shopping centers and markets
Light covering of warehouses
Open and closed stadiums
Meeting hall skylight
Automotive industry (production of car interior decorations, making bumpers, dashboards and light glasses of modern cars)
Hologram production industry
Health and medical industries such as colored eye lenses, dialysis equipment, blood transfusion and endoscopy
Making food and medicine bottles
Electrical and electronic industries such as CD manufacturing and computer coating
Production of helmets, gas masks
Military industries such as the production of resistant glass for fighter planes and the production of bulletproof glass
What are the advantages of polycarbonate sheets?

Low weight (it will make it resistant to earthquakes and its transportation cost will be low)
High resistance compared to plastic
High resistance to acids, oils, alcohols, neutral salt solutions and aliphatic hydrocarbons.
Resistance to sealants and adhesives
Impact and scratch resistance
High tensile strength
High flexibility
Good thermal insulation (which will save energy consumption in the hot and cold seasons of the year.)
Non-ignition and self-extinguishing at high temperature
UV resistance
Resistance to various weather conditions such as storms and hail
Polycarbonate sheet is lightweight, impact-resistant, with a high variety of colors, which makes this product capable of variable shading and light transmission. The light transmission in polycarbonate can be between 35 and 82% depending on its color.

Polycarbonate sheet is an unbreakable and flexible sheet and has a very high resistance to stretching and bending. Also, these sheets are very good thermal insulators that can play an important role in saving and preventing energy loss in the building. Polycarbonate sheet is self-extinguishing and does not catch fire. Also, these purple sheets are resistant, and the color and transparency of the sheet does not change against sunlight and is well able to prevent the negative effects of ultraviolet rays from penetrating into the environment.

Unfortunately, the use of these sheets also has some disadvantages, including overheating of the space under these sheets. Also, although these sheets do not ignite during fire, they are highly smoky. Another weakness of polycarbonate sheets is the scratchiness of the sheet surface, which cannot be avoided.