Polycarbonate monolithic transparent: dimensions, characteristics, application

Polymer materials today are widely used in the construction of buildings for various purposes and in the process of repair. One of them is cellular polycarbonate, which can be represented by a two- or three-layer panel, between the layers of which are longitudinal ribs.

general description

The cellular structure guarantees mechanical strength at a low specific gravity. In the cross-section, this material has the form of honeycombs of triangular or rectangular shape, hence the name. The raw material is a granular polycarbonate formed during the condensation of polymers of dihydroxyl compounds and carbonic acid. The polymer belongs to thermosetting plastics and has many unique characteristics.

Linear dimensions and specific gravity of the sheet

Polycarbonate monolithic transparent can have different sizes and specific gravity. The thickness varies from 4 to 25 mm, while the number of layers can reach 6. The distance between the stiffeners in the material with the smallest thickness is 4 mm, this parameter at 25 mm thickness is 20 mm. The width of the sheet can be 2.1 and 1.2 m.

The smallest sheet can be bent with a radius of up to 0.7 m, while a 25 mm sheet is not recommended to bend. A sheet with a thickness of 20 mm can be bent to a radius of 3 m. The 4 and 25 mm sheet will have a weight of 0.8 and 3.4 kg / m ^2, respectively. If you decide to purchase polycarbonate, the dimensions of the sheet may differ from the above, but in this case the parameters must be agreed with the manufacturer. The thickness of the stiffeners will be determined at the manufacturing stage, but the maximum permissible deviation for this parameter is not established.

Technical characteristics: temperature operating modes

In a large assortment today is a monolithic polycarbonate. The manufacturer Prisma-Plastik offers a material with high resistance to unfavorable environmental conditions. Temperature regimes of use depend on the brand, compliance with production technology and quality of raw materials. Almost for all types of panels, this indicator varies from -40 to +130 ° C. On sale you can find polycarbonate monolithic transparent, which is able to undergo extremely low temperatures to -100 ° C, while the structure of the material will not be broken.

When cooling and heating, the linear dimensions will change. The permissible expansion of cellular polycarbonate should not exceed 3 mm per 1 m, this applies not only to the width, but also to the length. Polycarbonate monolithic transparent is characterized by considerable thermal expansion, therefore at its installation it is necessary to leave corresponding gaps.

Chemical resistance

If the panel is intended to be used for finishing, it should be remembered that they can be exposed to a variety of destructive factors. Polycarbonate is highly resistant to chemicals and compounds. However, it is still not recommended to allow polycarbonate contact with such materials as:

• Plasticized PVC;
• Cement mixtures;
• Aerosol insecticides;
• concrete;
• Sealants based on ammonia;
• Strong detergents;
• Substances based on acetic acid;
• Aromatic halogens and solvents;
• Solutions of methyl alcohol.

Polycarbonate monolithic transparent has a high chemical resistance to the following compounds:

• Salt solutions with a neutral acid reaction;
• Concentrated mineral acids;
• Alcohol solutions;
• Most types of oxidants and reducing agents.

However, in the case of alcohol solutions, it is important to exclude the effect of methanol on the material. When installing polycarbonate, silicone sealants and EPDM-type sealing elements designed for this purpose should be used.

Mechanical strength

Polycarbonate, whose sheet sizes were mentioned above, has high mechanical strength, the material is able to undergo significant loads. But if the surface is exposed to abrasion, contact with fine particles by the type of sand can cause damage to the substrate. In this case, you may encounter the fact that the material will be covered with scratches after a certain time, as for cases when it comes in contact with rough materials. Monolithic polycarbonate, the price per sheet of which varies depending on the thickness, has a certain mechanical strength, which will depend on the structure and brand of the material.

After the tests, the following results were obtained. The tensile strength is 60 MPa, while the relative deformation at reaching the ultimate strength is 6%. The material also has a yield strength, which is 70 MPa. The relative strain at the yield point is 100%. The impact strength of the material is 65 kJ / mm, but as regards the deformation, it is equal to 35 kJ / mm ² . The manufacturer guarantees that the performance characteristics of the material will be maintained for 5 years, this is true if the sheets are installed correctly.

Resistance to ultraviolet

Polycarbonate sheet transparent monolithic is able to guarantee reliable protection against radiation in the UV-range. In order to achieve this effect, a special stabilizing coating is applied to the surface by coextrusion during the manufacturing process. This technology provides a minimum service life of the material for 10 years.

The detachment of the protective coating does not occur for the reason that the polymer is fused to the substrate. When installing the sheet, inspect the markings and install it correctly. The coating for protection against solar radiation should be turned outwards. The light transmittance depends on the color, and in the case of colored sheets, this value varies between 83 and 90%. If it comes from colored panels, then their light transmission capacity does not exceed 65%, while polycarbonate excellently disperses light.

Thermal insulation properties

Polycarbonate transparent for greenhouses should have heat-insulating properties. The heat transfer coefficient, characterized by heat-insulating properties, depends on the structure and thickness of the sheet. This parameter varies from 4.1 W / (m² · K), which is true for a 4 mm sheet, up to 1.4 W / (m² · K) for a 32 mm sheet. Cellular polycarbonate is the most suitable material where a combination of high thermal insulation qualities and transparency is required. That is why it is often used in the construction of greenhouses.

Scope of use

Due to multifunctionality, polycarbonate is used today in many areas of industrial production. You can not find an industry where this polymer would not be used. In construction, it is used for glazing, where transparency and strength are needed. Roofs from cellular plastic are able to withstand impacts and wind load. On the roads you can find a lot of structures that serve for traffic safety, among them it should be noted:

• Shelter for pedestrian crossings;
• Protective shields;
• Public transport stops;
• Lenses for lighting devices;
• Road signs and signs.

This plastic is the embodiment of the dream of the agrarians about the transparent, strong and light material. It is used for the arrangement of greenhouses and greenhouses. Polycarbonate is the ideal material for creating various products for show business and sports. From it helmets are made, and on hockey grounds of monolithic plastic, you can find protective skirts.

Another industry is the food industry. Chemical inertness allows you to make polycarbonate cutlery and unbreakable dishes. Monolithic polycarbonate, the price per sheet of which is quite acceptable, is used today in medicine for the manufacture of vessels, cases, artificial joints and dentures. One can not help but note the field of electronics and the chemical industry, where polycarbonate is used as a material that does not conduct current.

Cost

Polycarbonate monolithic 2-mm transparent will cost 3900 rubles. Per sheet, the dimensions of which are 2.05 x 3.05 m. The price will vary depending on the thickness. Thus, for 0,6-mm sheet it is necessary to pay 650 rubles, the size thus will make 1,25 x 2,05 m. If thickness will be equal 12 mm, the cost will make 23400 rbl. For a sheet whose dimensions are 2.05 x 3.05 m.