WHAT ARE THE TECHNICAL SPECIFICATIONS OF INSULATION MATERIAL STYRONIT?

Ready-to-Use Stucco and Plaster - General Appearance

Styronit can be used for the insulation of buildings as plastering and coating material for both exterior and interior walls. After the application of stucco, the material shows evenly distributed strength properties and has an uniform properties throughout the whole surface.

Sieve Analysis

Density

Quantity of the Corrosive Materials (Chlorine Content)

Stuccos and plasters must be free of corrosive materials, particularly, the inorganically bonded amount of chlorine content must not exceed 0.05% by weight. In Styronit stucco mixtures, the chlorine content is 0.004% on average.

Volumetric Consistency

After the boiling test applied to Styronit stucco paste samples, there is not any visual evidence of sharp edges, cracks and distortion regarding the test samples. This phenomenon indicates the volumetric consistency of styronit.

Setting Time

Ready-to-use stucco styronit starts setting 2 ½ hours later after application and completes its setting in 11 hours.

Compression Strength

Ready-to-use stucco styronit does not show any fragmentation, deformation, or planar disintegration under load. It has a high plasticity index. Styronit insulation material which is set after application, withstands pressure of 42 kgf/cm2 (4.12 MPa).

Moisture Expansion and Drying Shrinkage

The stuccos made up of different materials, when they are permanently exposed to ambient of varying moisture content and temperature under the conditions of their use shows effects of moisture expansion and drying shrinkage. As a result of these interactions, hair cracks which is also known as strain cracks occurs on the surface of the stucco. This phenomenon is especially an undesired situation for the stuccos which will be applied onto the walls. Moisture expansion of the styronit stucco material that is set after application, is 0.83mm/m and drying shrinkage of it, is 0.16 mm/mm. In the coatings performed with ready-to-use Styronit stucco, there can't be any observed crack and/or shrinkage.

Resistance to Water, Moisture and Atmospheric Conditions

Moisture effects the constructional components always in varying manners. The effects of moisture on walls are multi dimensional. First of all, the thermal insulation performance of the wall surfaces reduces, and thus condensate occurs. Moisture may cause not only physical damages but also chemical ones. In addition to the dissolve and disintegration of the binding materials, cracks and swells caused by the volume increase can be seen on the compounds potentially contained in the material content. The moisturized walls damaged due to frost has of particular importantance. The structural flaw started on the surface progresses into the depth of the material. Eventually, the structural components lose their functionality and effectivity. That's why the endurance of the materials used in the cross section of the construction, against impacts of water and moisture is important.

The water permeability of the ready-to-use Styronit stucco surface after setting is around 3.65% and the rate of progression in the body, of the absorbed water from the surface is 1 mm on average. Styronit insulation builds up a water-tight layer on the surfaces of the buildings as well. On the exterior sidings and coatings made of Styroit stuccos, there are only slight change which is less than 1% by mass under capillary effect of the ground waters, no impacts of harmful sulphate salts of ground water and no formation of any efflorescence on the surface.

There are sea water compounds (salts, NaCl) in the moisture content in the air especially in fall, spring and summer seasons, which are found in the coastal regions, and formed due to the high evaporation rates. These result in salt deposits at certain concentration on the exterior surface of the building through condensation, deteriorates the specific structure of the stucco material in the course of time, and have a potential disintegration effect. That's why the resistance of the stucco materials is important against these types of chemical attacks especially at the regions where the salt concenration is high. In the cases where ready-to-use styronit stucco material is used for plastering and cladding purposes, the salts resulted from evaporation of sea water can not effect styronit and there is no observed sign of any impact on and disintegration of the material. Styronit insulation is the one that can be safely applied in the coastal regions.

Thermal Endurance

Ready-to-use Styronit stucco and insulation material loses 2% of its mass up to 190^oC, and at 260^oC structural disintegration is initialized, and at 280^oC partial carbonization comes up.

Heat Transmission

Heat transmission capability in the dry form, of the ready-to-use stuccos which have high thermal insulation properties must be pretty low. Especially, the value of thermal conductivity in the dry form, depending on specific gravity of the stucco must be lower than the value, 0.18 W/mK. Besides that, the materials which have thermal conductivity less than 0.065 W/mK is defined as thermal insulation materials.

According to the application conditions of Styronit, ready-to-use stucco and coating material;

• styronit 150 has thermal conductivity value, 0.038 W/mK  on average
• styronit 250 has thermal conductivity value, 0.045 W/mK  on average
• styronit 450 has thermal conductivity value, 0.052 W/mK  on average

Sound Absorption

The main principle in sound insulation is to put the materials with low dynamic hardness (soft) into structural cross section to block the sound transmission and to absorb mechanical (action) energy of the sound transmitted in air via insulating material. In case of the applications with ready-to-use Styronit stucco, open porous and fibrious structure occurs after setting of stucco and this makes Styronit a good sound insulation material. That's why the ready-to-use Styronit stucco and coating material is suitable product for the exterior siding and coating applications where the sound insulation is important. Ready-to-use Styronit stucco has a sound absorbtion value of 18dB at 500 Hz.

Vapour Diffusion Resistance

The value of the vapour diffusion resistance of the materials in the wall cross section must be low enough so the walls can breathe in and out. The vapour diffusion resistance after setting, of stucco samples made of ready-to-use Styronit stucco material changes between µ = 1,0 -2,0. Styronit insulation develops a layer that can facilitate breathing walls.

Colour Uniformity

In case of ready-to-use stucco applications, any colour shade changes after the plastering are not desired. The colour shade changes on the surfaces plastered with ready-to-use Styronit stucco material can not be observed.

Adhesion Strength

In the ready-to-use stuccos, the adhesion strength after 28 days of curing must be around 3 kg/cm2 at least.The adhesion strength of the ready-to-use Styronit stucco material is much greater than 5.2 kg/cm2.

Technical Specifications of Styronit Insulation Material