Specifications penofol and its unique properties
thermal insulation materials are paving the floor and walls of the houses being built today.The amount offered by manufacturers of heaters so great that some of them have not heard everything.But such material as Penofol, the characteristics of which have fairly good performance, is known to many.No wonder - this heat insulator and will protect against noise, and walls will reduce moisture absorption, and heat transfer in the room will slow significantly.
- acquainted with penofol
- Options penofol
- Table of basic technical properties
- Where used Penofol
- Disadvantages penofol
- Video: Penofol andanalogs
acquainted with penofol
Insulation This consists of several layers.In the middle is the type of self-extinguishing polyethylene foam, and the edges - high-quality aluminum foil.Its thickness is 12 to 30 microns, and the proportion of the pure substance in it - 99.4 percent.The result is a material of small thickne
Penofol This type has a very close range.
being virtually unable to absorb thermal radiation Penofol works on the principle of its reflection.This is different from the vast majority of heat insulator layers which retain the heat emanating from the premises.It should be noted that the word penofol is not the type of insulation and the brand name.
To understand how the reflected heat penofol, remember how the Dewar flask.This device, usually called Dewar, invented a Scotsman - scientist in the field of physics and chemistry James Dewar.In the early twentieth century, he held a series of experiments in the laboratory to see how to behave in the heat insulated walls of the vessel.The same principle applies to all thermoses.
Now, Dewar found that any substance known to people has a certain heat transfer resistance value "R".And what would be the value of this indicator was not to stop the transfer of heat can not be any one material.Only possible slowdown in this process.This substance absorbs heat waves, accumulating the energy of.Once this energy is oversaturated, start the reverse process - heat.
But there are a number of materials, which is not peculiar to the absorption of thermal energy - they reflect it.This, for example, precious metals such as platinum, silver and gold.And this ability has pure aluminum, highly polished.Rays of thermal energy which reach the surface of the material, are reflected almost completely (98-99 percent).There is only one "but" - these substances are good conductors of heat.Therefore, they must be supplemented by some thermal barriers, for example, foamed polyethylene.He is able to absorb heat.Thus, specifications penofol combine and reflection, and absorption of heat rays.
Studies conducted more than 40 years, and as a result it was found that the loss of facilities and heat accumulation and its directly connected with the radiation of the infrared spectrum.But it can be balanced by applying the reflective type of insulation materials that are easy to install and are very effective and inexpensive infrared reflectors.
People are gradually getting used to the heat-insulating materials such as reflective.They are profitable and convenient, so the experts predict that such heaters gradually occupy the leading position.Their use and equipment wear out less, and the amount of time and money for equipment for the heating and air conditioning systems are significantly reduced.Working with the reflected heat energy is not an example of better than absorbed.
Since heat rays are reflected, in winter heat loss for heating the floor, ceiling and walls will be much less.And when using double-sided reflective insulation and summer, in the heat, neither will the negative effects of the absorption of heat from the outside.
What happens Penofol
now produce a lot of materials under the brand name penofol.Probably, we should list the ones that are most in demand.Among them are the classic Penofol coated aluminum falgu only one side.Such Penofol has type "A".
Penofol foil on one side - the type A.
Penofol which foiling performed on both sides of type "B".Penofol both these types of fairly dense and resistant to physical stress.
Penofol foil on both sides - type B
Penofol type C belongs to the category of self-adhesive materials.It foamed polyethylene layer on one side polished aluminum coating is applied, and on the other - a layer of moisture-resistant film and adhesive, the adhesion preventing material.This type of insulation is used where conventional Penofol not suitable or too expensive, because for it is not necessary to mount additional devices.
Adhesive Penofol - type S.
And there Penofol having perforations.He is also unilateral or bilateral and is released not so long ago and used for thermal insulation of facades on the outside.Perforation allows moisture out of the material outward.In other words, the walls, insulated with a material can "breathe."About
The thicker the insulation, the more expensive it is.A further price and specifications penofol foil affects the number of layers of aluminum foil: there may be one or two.With regard to thickness, its standard sizes 10, 8, 5, 4 and 3 millimeters.One can understand that the material centimeter thick with a double layer of foil is the most expensive.He, by the way, not only keeps the best heat, but also good protection against noise.
at optimum value for money in the first place came Penofol thickness of 0.5 centimeters.If you need the maximum thermal insulation and protection from noise and moisture, it is better to opt for penofol cm layer.As for the other parameters of insulation, they also depend on the thickness of its layer, and also on its type.
About penofol heat conduction
Since the insulation is a combination that combines reflection and absorption of heat, it is difficult to compare it with the conventional heat insulators.Penofol insulation reduces the convection by a layer of polyethylene foam and a layer of foil on the outside can reflect up to 97% of heat rays.As a result of the isolation of the complex is obtained.
Still, let's try not to compare the thermal conductivity and resistance to heat transfer penofol and other heaters.If we take the material thickness of 4 to 5 millimeters, is coated on both sides with aluminum foil, then obtain the thermal resistance from 1.2 to 1.23 square meter-degree Celsius per Watt.To achieve the same result mineral wool layer must be not less than 8 or 8.5 centimeters.These are calculated in accordance with SNIP II-3-79.About
material soaking water
Penofol almost does not absorb moisture, and no matter what the humidity is in the air outdoors and indoors.Do not depend on this change of seasons and the change of temperature.This compares favorably with the most modern insulation from the heat insulator.About
vapor permeability penofol
film for vapor barrier using penofol lay not necessary.After all, its coefficient of water vapor permeability does not reach even 0,001 milligrams per meter per hour Pascal.We can say that this insulation is an excellent barrier to vapor.
Speaking of sound absorption penofol, you can call this number: 32 dB.It is the sound absorption material has an "A" class.It is not mounted inside the frame of the building structure, and on top of it, the lack of joints.Therefore, it allows you to protect yourself from the different noise: both from the acoustic and the structural.This versatility - a definite plus.
The material according to the norms of the substances that are difficult to burn or support combustion.SRI STROYFIZIKI penofol issued certificate of conformity, certifying that the material is not a fire hazard.At fire polyethylene allocated water and carbon dioxide.However, if not enough oxygen, and carbon monoxide may arise.
service life and safety
one of the purest in terms of ecology material - this foam.Therefore, it is the basis of it penofol.By the way, and in durability (200 years), this substance can put a perfect score.Along the way, and the harmful effects of electromagnetic radiation will be able to protect themselves.They can be reduced to two or even ten times.
Table of basic technical properties
|Options||Type - A||type - B||Type - With|
|apply at a temperature 0C||from - 60 to +100|
|factorheat reflection surface,%||95 - 97|
|Thermal conductivity in dry state at 20 ° C, max.||0,037 - 0,049||0,038 - 0,051||0,038 - 0,051|
|Water absorption by volume,%||0,7||0,6||0,35|
|Water vapor permeability mg / m hour Pa||0,001|
|Compressive strength, MPa||0,035|
Where used Penofol
Based on the foregoing, it can be understood that the insulation Penofol specifications is simply universal.And so it can be used for thermal insulation of light summer houses in suburban towns, and for thermal insulation of apartment buildings.Offices, industrial premises, kindergartens, hospitals, saunas and baths, you can isolate this material.To insulate them from the hangars and warehouses, both heat and unheated.Stalls and modules for trading makeshift and cold rooms can also be warm penofol.And they wrapped pipes (plumbing, ventilation and heating), isolated wagons, vans and cars, shielded radiators.
Penofol which is coated with foil on both sides, not only help to keep warm in cold days.Legal Code under the roof, it will not allow to get into the house znoyu scorching summer.For example, paving Penofol with double-sided foiling, of type "B" and a thickness of 5 mm, leaving a two-layer air 2 centimeters each.The result was not long in coming: the thermal resistance of the structure will be more than 1.2 square meter-degree Celsius per watt.
Like other insulation materials and Penofol is not without drawbacks, so consider what they are.
1. foamed polyethylene, which is used as a base and serves as an absorbing insulation does not have sufficient rigidity.Therefore, to make over his plastering or use it for wallpapering is not possible.Enough small pressings and flex material.
2. Fixing material to the surfaces can also be difficult.It will have to probably buy special adhesives.Use for mounting a variety of devices that it is not advisable to punch, t. To. Will deteriorate the quality of insulating material.The company is trying to eliminate this disadvantage, so the market and was released Penofol with adhesive surface.
3. Whatever miraculous properties possessed polyethylene foam, the use of only one penofol as the primary insulation of external walls of buildings and structures naturally not enough.In this case, it can be used as additional insulation, which primarily will provide a reflection of thermal energy.There are already all you need to calculate in monetary terms, because there are such kinds of heaters that contain reflective insulation and can be used as the primary insulation.
Video: Penofol and its analogs
- reviews and opinions on the feasibility of using penofol
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