CS238839B1 - A method of fixing a heat-insulating material to a building or part - Google Patents

Abstract

The method of fixing the heat-insulating material to building objects or parts affects the construction industry. SUMMARY OF THE INVENTION The invention is based on the fact that a mixture of sand, gypsum and cement dispersed in a dilute aqueous emulsion of polymers which is no longer soluble in water and provides a continuous film is used for the fixation in a suitable ratio. Advantageously, it can be used in the construction industry for fixing heat-insulating materials, preferably polystyrene, in a very simple manner, or to increase the thermal insulation already on existing buildings.

Description

3 238839

The invention relates. the method of fixing the heat-insulating material to the building objects or parts by means of a mixture consisting of the inorganic components in the form of an aqueous dispersion in a diluted latex of polyvinyl acetate.

Significant amount of thermal energy escaping imperfectly insulated construction parts of residential housing. Especially in recent times, a great deal of attention has been given to reducing this time.

The literature describes several procedures that either aim to reduce the thermal conductivity of a building component directly, or the insulating material is fixed to the surface of a structural component or structure. For example, the expanded perlite is mixed with the mortar and applied to the building structure.

A process is known in which insulating inserts are fixed by means of a steel construction with a cement mortar of 25 mm. Another method utilizes the possibility that it is mechanically fixed by an insulating flap, for example by grinding. There are ways to fix the insulating material using rubber latex latex pads.

The application of said procedures has certain advantages. In the case of the use of perlite mortar, the possibility of reducing the thermal conductivity is limited by the maximum possible proportional and mortar. In the case of the use of a cementitious mortar insulating liners, they must be specially adapted, which substantially increases the cost of thermal insulation with the process of operation. The mechanical method of fixing, for example by grinding, is time consuming and requires adjustment of the substrate. The use of rubber adhesives is costly and time-consuming to adjust.

These drawbacks are eliminated by the method of fixing a heat-insulating material according to the invention, characterized in that the curing mixture which disperses in 4 to 6% of the aqueous emulsion-polymeric substances which, after drying, gives a continuous film in water is no longer insoluble. preferably polystyrene. The correct component ratio ensures that such a dispersion is obtained which has sufficient adhesion to the structural parts, respectively. an insulating material immediately after being adhered to the building components. Dry sand of 1 mm grain size, gypsum and cement, for example, in a cement mixer, are self-mixing until a homogeneous mixture is obtained of 10 to 15 minutes. The mixture is then dispersed before use, for example, into a dilute aqueous emulsion of polyvinyl acetate. It disperses the dispersion evenly over the surface of the insulating dock and waits until the dispersion has a thixotropic property so that the dispersion is already inert in the vertical position. The insulating plate is then pressed against the building components.

The same mixture is used for the treatment of the outer surface, only a diluted dispersion is prepared, on the surface of which, after drying, it is possible to apply traditional lime calcite.

The method of fixing the heat-insulating material with the curing composition of the present invention has advantages over prior art.

The dispersion has a thizotropic property, allowing easy handling when gluing the insulating material to the wall. The use of a dispersion immediately after it has been pressed against the wall, so that it solidifies on the surface of the wall, does not need to be mechanically secured for displacement. The preparation of the mixture or dispersion requires no investment costs and can be directly prepared on site. It follows that the individual builder can also use the subject matter of the invention, not only at the end of a new building, but also at an additional adjustment of existing family gifts. From the economic point of view the use of the proposed method is of great importance, as the material cost of gluing and exterior treatment to 1 m2 of heat-insulating material is around 6 to 7 CZK, while the heat loss caused by the transition through the building components is substantial. up to double.

The proposed method of preparation requires no professional qualification of the worker, or the use of special aids, nor the demanding modification of the documents.

No harmful vapors are formed during the preparation of the dry mixture or dispersion. Example 1

Ten parts by weight of dry sand which have been sieved through a 1 mm sieve, three parts by weight of gypsum and one part by weight of cement are homogenized, for example, in a concrete mixer for 10 to 15 minutes. Dissolve 4 parts by weight of this mixture! to 3 liters of 5% aqueous emulsion of polyvinyl acetate, which is poured onto the surface of 1 m2 of insulating material. After the sufficient thixotropic property has been achieved, i.e. if it is already inert in the vertical position of the dispersion, which requires 15-30 seconds, according to the ratio of the dry mixture and the aqueous emulsion of the polyvinyl acetate, the insulating material is pressed against the stationary component. Example 2

Ten parts by weight of dry sand which have been sieved through a sieve with a mesh diameter of 1 mm, ten parts by weight of the sack and a pat of parts by weight of the cement are homogenized, for example, in a concrete mixer for 10 to 15 minutes. From this mixture of parts by weight, it is dispersed in 10 liters of an aqueous emulsion of polyvinyl acetate which is poured onto the surface of 1 m 2 of insulating material. After obtaining a sufficient thixotropic

Claims (2)

SUBJECT Method of fixing the heat-insulating material on building objects or components with a hardening composition, characterized in that 4 to 6 parts by weight of a thixotropic mixture consisting of 10 parts by weight of sand with a particle size of 1 mm are applied to the surface of 1 m ^{2 of the} insulating material. 3 to 10 parts by weight of gypsum and 1 to 5 parts by weight of cement suspended with 3 to 10 liters of a 4 to 6% aqueous emulsion of polymeric lava flows which, after drying, give a continuous film of water-insoluble, for example polyvinyl acetate and heat insulating material. , for example polystyrene, which is fixed to the surface of the building part by pressing and from the outside a heat-insulating material such as polystyrene is coated or sprayed with the same mineral mixture but suspended by 4 to 12 liters of 4 to 6% aqueous polyvinyl acetate emulsion.