Among the possible areas of application, one can also note those where the use of the protective properties of sheets of this material from ultraviolet rays acquires a certain importance. Therefore, when purchasing a material, it is important not only to have an appropriate coating, but also its quality.
The second important point is the increase in the share of low-quality fakes with the growing popularity of this polymer. Therefore, in order for the created structure to be able to please for a long time with its excellent appearance and longevity, the issue of the quality of polycarbonate should be raised even at the stage of its selection.
What you need to know about protective properties
Why is it necessary to make sure that there is a protective layer on the sheets of the purchased material? You need to know that polycarbonate without protective elements under the influence of the sun color quickly degrades... This does not imply its complete destruction, but turbidity and the appearance of microcracks in this case are guaranteed. The continued use of such material will be limited.
When buying material, the issue of security should be given sufficient attention. And this must be done for a number of reasons.
First, sellers of the material may not focus on whether the polycarbonate UV protection is applied to the material. Second, there are different ways applying protection that are different from each other. And clarification of the applied method for the purchased material is one of the main questions of the buyer.
The following main differences can be distinguished between two methods of providing ultraviolet protection:
- applying a protective layer by fusing a thin film on one side of the polycarbonate panel;
- the addition of a special substance called an ultraviolet stabilizer, which provides UV protection even at the stage of polycarbonate production.
If in the first case it is possible to visually verify whether the film has been applied, then the introduction of a protective substance into the mixture cannot be controlled. And the cases when the declared properties were only declared, unfortunately, are not uncommon. One of possible ways protect yourself from a fake is buy polycarbonate panels from a trusted manufacturer, while resisting the temptation to save a little on the purchase.
Among the possible control signs, whether the protection of polycarbonate from ultraviolet radiation is actually installed, the following points can be distinguished for yourself:
- In the case of applying a special protective film, the manufacturer indicates the installation of a special UV filter. In this case, there will be information on the orientation of the sheet when installed in the direction of the sun's rays.
- When using a special composition in the composition of the mixture to impart protective functions, the manufacturer does not always indicate the order of installing the sheet. In this regard, panels are often installed incorrectly.
Do not consider a protective film for transporting materials as protective layer against ultraviolet rays.
It should be noted that even in the case of not providing high-quality protection of polycarbonate from UV radiation, a certain amount may retain the material itself. But this is clearly not enough as the expected effect. This minimal protection allows you to preserve the appearance and quality of the material only at the stage of storage and transportation. But in the future, with active use, the sun's rays will do their job.
Check and guarantee
The most effective way to make sure of the characteristics declared by the manufacturer or seller, a trial purchase of a sheet from one batch will become. After the start of "use" of such a sheet, its surface will quickly acquire a yellowish tint, and the transparency will decrease significantly.
If you do not have time for such procedures, then you should rely on the factory marking of the polycarbonate panel. The best UV protection for polycarbonate is provided by the use of coextrusion protection. The protective layer is simply fused into the upper layers of polycarbonate with a thin (about 45 microns) film, while not exerting negative effects on the material itself. Such sheets have obligatory factory marking, where the method of applied protection is indicated, as well as the side of the material that is intended to turn towards the sunny side when installed on the structure.
Additionally, you can apply visual control of the presence of a co-extrusion layer. UV protection with this method of preserving the material when viewed in the light has a certain bluish glow on the cut. If such a glow is not observed, then you can count on the use of only a stabilizing additive in the mixture.
Another indirect indicator of the use of high-quality protection of the purchased sheets may be the cost of the material. The formed price for a standard sheet allows us to establish an approximate cost of 1.7 thousand rubles per sheet of low quality. Of course, price is not necessarily an exhaustive guideline. In this case, the seller who claims that the protection of the polycarbonate sheet is present may be right. But he may delicately fail to specify which method of protection is used and what is the degree of protection in a particular case.
Many manufacturers are ready to establish a guarantee for the goods produced and sold. Under such conditions, the buyer is more willing to purchase polycarbonate panels. At the same time, not everyone will subsequently turn to the seller, motivating their appeal with the cloudy surface of the greenhouse. But even if the case is recognized as a warranty, the replacement will most likely be made with a material of similar quality. In this case, the buyer will be forced to re-live all the hardships of carrying out and dismantling works.
Thus, the question of saving on purchasing more available material, in the case of polycarbonate, may result in additional costs in the future.
We also offer you to get acquainted with the article "Choosing the shape of a polycarbonate greenhouse, developing a drawing".
Today, polycarbonate has become very popular. building material... This is not surprising, because, despite its availability, the material is lightweight, highly durable and shock-resistant. Besides, this material It is highly durable and perfectly resists water, sunlight, high temperatures and fire. In general, its outdoor use can be called great idea... For the first time this material began to be used in the 80s. But in the vastness of the former USSR, its use became possible only in the late 1990s.
Polycarbonate in Moscow and the region, what you need to know about it
Our company has long been offering its customers high-quality polycarbonate of various variations. In addition, we also build different types and sizes. It is known that it is precisely such structures that perfectly transmit sunlight to plants and allow them to bear fruit almost all year round.
It should be said that there are several categories of this material:
-
monolithic;
wavy;
fluted;
profiled.
But the most popular are the first two categories, which will be discussed.
Monolithic polycarbonate, the price of which is favorable for the buyer
One of the most popular materials of this type is. The essence of this material is that it is lightweight and fragile. But this is only at first glance. In fact, this particular look is the most durable in the polycarbonate category. It combines both strength and transparency and flexibility. At the same time, it practically does not lend itself to the destructive action of fire and high temperatures. Such material is convenient to use in construction or industry. Its distinctive feature will be the fact that it has a protective layer that does not allow even solar radiation to pass through.
This type of polycarbonate will be ideal for creating and glazing public transport stops or telephone booths. In addition, it is convenient to create semicircular sheds from it, assemble transparent floors or walls, or glaze boats, planes, buses and other types of transport. You can buy monolithic polycarbonate from us at a low price.
What else can you buy polycarbonate from us?
It is a material that is produced using extrusion technology from high quality polycarbonate raw materials. The entire technological process is carried out in accordance with European quality standards. Such a material has high thermal insulation properties, excellent light transmission and demonstrates excellent resistance to mechanical damage. Its insulating properties are especially interesting. That is why it is very actively used in construction, when it is necessary to achieve a high-quality thermal insulating effect.
Why ordering polycarbonate from us is profitable
You can buy high-quality polycarbonate of various types from a well-known manufacturer from us. All our products are certified and have a document that confirms their high quality. In addition, if you are looking for cheap polycarbonate in Moscow, you should definitely contact us. After all, our prices are significantly lower than those of competitors. And all because we work directly with the manufacturer, which avoids additional markups. Contact us and become the owner of high quality polycarbonate of various types at a low price. By the way, we also provide a warranty for our products.
Strength
200 times higher than silicate glass and 10 times higher than acrylic. With strong impacts, the plastic bends, cracks, but does not break.Excellent light transmission
Light transmission polycarbonate allows up to 92% of natural light to pass through.Flexibility
Flexibility, formability, workability polycarbonate used to create various curved surfaces.Durability
Warranty period for polycarbonate is usually 10-15 years old, but greenhouses and gazebos are of high quality polycarbonate will easily last 25 years, provided correct installation and exploitationFire resistance
Compared with organic glass, polystyrene, monolithic polycarbonate belong to hardly flammable materials, which makes it possible to use it for light diffusers in elevator cars.Ecological cleanliness
Polycarbonate does not emit harmful substances into the environment even when high temperaturestypical for a fire.Resistant to temperature changes
QualityLow specific gravity
Soundproofing
Chemical resistance
polycarbonate resistant to a large number of chemicals, except for alkaline solutions, chlorine (chlorinated hydrocarbons), ethers, aldehydes, organic acids and fatty oils. It should be especially noted that any contact is unacceptable. polycarbonate from Pvc... Cannot use profiles or washers based on Pvc. JavaScript is currently disabled.Questions and answers
To choose high-quality polycarbonate, it is necessary that it has protection against ultraviolet radiation, such a material will last at least 10 years. UV protection must be co-extruded.
It is important to know not only the thickness, color and manufacturer, but also the list of additives and additives contained in polycarbonate. Some of them allow using the material in energy-efficient translucent structures - polycarbonate mixed with metal chips is able to reflect infrared radiation and, as a result, reduce heat loss. And some increase the UV resistance of polycarbonate (UV stabilizer), so that it can be used even without a protective film.
You can, of course, determine the quality of the material "by eye", something like this:
- look at the light. The material must be transparent and not contain any foreign inclusions. The color should be even and deep;
- touch it: it should be firm, when bent, it should not make crackling sounds, and even more so it should not break. Plasticity is a sign of high quality;
- find out the weight of the plastic. With a thickness of 1 cm square meter cellular polycarbonate should weigh about 1.7 kg. If the weight is less, you should not take this product.
Based on the foregoing, it is best to contact specialists after all.
NOTE!
By calling our company, you will receive free professional advice!
UV protection on the sheet protects the polycarbonate sheet from the sun's rays. On cellular polycarbonate, the protective layer is usually applied on one side, which should face the sun. This side is marked by the manufacturer either with inscriptions, or has a different color film for the top and bottom sides (be sure to consult your dealer for how the protected sheet is marked).
We also want to note that there is a misconception that if the sheet is protected from ultraviolet radiation, then ultraviolet rays do not pass through it. Such protection has nothing to do with blocking ultraviolet radiation, it only has to do with protecting the sheet from destruction. We would also like to draw your attention to the types of protection of the sheet from ultraviolet radiation: the most reliable way to apply a protective layer is the co-extrusion method. This is the application of a protective layer to the sheet during sheet production. Many unscrupulous sellers try to deceive the Buyer, saying that their sheet has UV protection in bulk.
Protective additives from ultraviolet radiation are already in the feedstock, but they are expensive and it would be economically unjustified to add such an amount of additives to the mass that would effectively protect the sheet from destruction. If you are told that the sheet has UV protection in bulk, then such a sheet does not have UV protection as such and will last no more than 2-3 years at best.
For ethical reasons, we will not talk about specific manufacturers, but we want to draw the Buyer's attention to the price approach when choosing a material. Currently, there is tough competition in the market of Manufacturers and Sellers of polycarbonate, and in order to survive, companies are forced to sell both polycarbonateand material "Like polycarbonate" ... We would like to note that there is a demand for both types of products.
The price of polycarbonate sheets depends on the price of raw materials and their composition (raw materials may also differ in price, the best quality raw materials are produced by Bayer, now raw materials from China, Korea, Russia are used). The composition of raw materials significantly affects the quality of the sheet produced and its price. We have encountered cases when crushed recycled plastic containers were added to the composition of raw materials. A sheet made from such raw materials will delaminate within a year after its installation on the street, but its cost will be significantly cheaper.
The price of raw materials takes a significant share in the price of a sheet, and if the offered price for a sheet significantly differs from the average on the market, then you are offered material not from polycarbonate, but from "Similar to polycarbonate" ... The quality and appearance of the sheet depends on the quality of the raw material and its composition, the equipment on which the sheet is produced, compliance with the technology during production
The choice of cellular polycarbonate today is quite large, however, the operation of polycarbonate for several years, it can be noted that not every material should be used for greenhouses and greenhouses.
It is quite difficult for a non-specialist to decide on the choice of a polycarbonate brand for a greenhouse / greenhouse due to the large selection in all price ranges.
Call us and get a free professional consultation!
The issue of providing ultraviolet protection for polycarbonate sheets is very acute for domestic manufacturers. Some of the manufacturers use it, taking care of the quality of their product, someone does not use it or hide it. But the worst thing is that there are unscrupulous manufacturers who claim to use UV protection, but save on it!
The lack of UV protection on the sheet inevitably leads to material degradation - to yellowing, sheet fragility. As a result, the sheet loses its exceptional strength and transparency, and therefore its value. Further, the sheet is destroyed.
The "mechanism" of the protective action of light stabilizers consists in the absorption of harmful UV radiation, which has a large amount of energy, and converting it into a thermal form that is harmless to the material.
There are two ways to UV protect polycarbonate:
- Introduction of a stabilizer into the sheet mass.
For good protection of the polycarbonate sheet from UV radiation and a quality guarantee of at least 10 years, it will be necessary to introduce over 30% of the light stabilizer into the mass. Of course, this will lead to the loss of the physical, mechanical and strength properties of the sheet. In addition, since the cost of the stabilizer is much higher than the cost of the polymer itself, its introduction into the mass significantly increases the production cost.
- Co-extrusion protective layer deposition on the sheet surface (35-60 microns).
The use of this technology in sheet production is considered optimal: it not only allows to achieve uniform UV protection of the entire surface of the sheet, but is also more cost-effective in comparison with the first method.
When the manufacturer has applied the protective layer in good faith, the surface protection sheet long time does not change its physical, mechanical, strength and consumer properties. Such a sheet usually lasts 10 or more years.
Currently, there are more than 50 lines for the production of polycarbonate sheets in Russia. The total demand of domestic industries for UV protection is approximately 4500 tons per year.
Taking into account the manufacturers' criteria for the production of high quality sheets, which must maintain their optical and functional properties for a long time, TechnoPromPlast, together with BASF, have developed and released a revolutionary new exclusive line of compounds (light stabilizers) for UV protection of polycarbonate - TEVALON UV.
On the basis of laboratory complexes BASF AG (Basel, Switzerland) and TechnoPromPlast at modern high-end WOM Atlas weather stations, tests of sheets produced using TEVALON UV were carried out. Laboratory tests were carried out according to generally accepted indicators characterizing sheet aging: physical, mechanical and optical characteristics (change in light transmission coefficient, surface gloss). Microscopy of the leaf surface after aging was carried out, as well as studies of the uniformity of the distribution of the UV layer and the yellowness index. The following results were obtained:
Based on the results of laboratory tests, the high quality of this product has been proven, corresponding to analogues of the European level.
The use of TEVALON UV UV stabilizer provides:
The necessary protection against UV radiation,
UV protection compatibility with original polycarbonate,
Even distribution of the protective layer over the entire surface of the sheet,
Preservation of the optical properties of the product after applying a protective layer,
Possibility of identification on the product using special devices.
By now, considerable positive experience has been accumulated in the use of TEVALON UV at the production facilities of the factories "SafPlast", "KIN", "Polyplast", "EFFECT", "Rospolymer".
A flexible pricing policy allows you to meet the needs of manufacturers working in different modes and conditions. Due to the fact that the speeds and processes of polycarbonate sheet production at different enterprises differ from each other, TechnoPromPlast has created two classes of UV stabilizers:
Obviously, manufacturers are primarily concerned with the issue of economic feasibility of using the new product. The table, as an example, shows comparative calculations of the cost of applying UV protection:
|
UV batch |
Price for 1 kg. |
Application cost per 1 m 2 TEVALONUV (5%, 35 μm) |
Application cost per 1 m 2 analogue (5%, 35 μm) |
|
RUB 9.48 |
from 12.07 rubles. |
||
|
RUB 9.19 |
|||
|
RUB 9.06 |
|||
|
RUB 7.61 |
from 7.56 rubles. up to 12.94 rubles. |
||
|
RUB 7.34 |
|||
|
RUB 7.22 |
The release of polycarbonate sheets and profiles - products of high chemistry - requires a series of tests when a new UV stabilizer is introduced into the production cycle. Therefore, TechnoPromPlast, together with BASF, has organized a comprehensive program of technical and technological support, which includes:
- Technical and technological support of tests for the release of finished products with the application of a TEVALON UV co-extrusion layer, as well as adding it to the extrusion mass.
- Possibility of carrying out complex tests of the quality of the UV layer on the basis of the laboratory complexes "TechnoPromPlast" and BASF AG.
- Based on the results of the tests carried out for the production and testing of its quality, an act is provided with recommendations on the technological mode of production and the warranty characteristics of the sheet / profile.
