BG63092B1 - Thermoinsulation material - Google Patents

Abstract

The thermoinsulation material is designed for heat insulation in the form of prefabricated panels of flooring, walls, roofing of buildings, for the insulation of central town heating pipelines, hot-water tanks, refrigeration equipment, for the packaging of electronic, radio and television equipment, and others. It has low heat conductivity coefficient and is made of cheap waste materials, also solving ecological problems. The thermoinsulation material consists of rubber granulate of particle sizes ranging from 0.01 to 6.0 mm of ground worn-out motor-car tyres and/or other rubber waste, optionally also lining of the textile cords, and polymer having low heat conductivity ratio, preferably foam polyurethane, polyvinylacetate and foamed bakelite. 1 claim

Description

The invention relates to thermal insulation material, which will find application for thermal insulation of buildings, heat pipes, in the packaging of electronic and radio-television equipment, etc.

BACKGROUND OF THE INVENTION

Thermal insulation materials are known, such as stereo support, stereodur, polyurethane foam, glass wool, mineral wool, asbestos, cardboard, textolite, ebonite, polypropylene, polyethylene, polystyrene, rubber vulcanizates and others.

Stereo-foam and polyurethane foam were most widely used as thermal insulation panels, without and with lining, in insulation of floors, walls and roofs of buildings, in insulation of heat pipes, in packaging equipment, etc. The advantages of these materials are known: high thermal insulation ability / low coefficient of thermal conductivity / and low relative weight. The disadvantages are: low ignition temperature, low hardness and bending resistance and high cost as they are products of oil refining.

It is also known from BG 40 412 in addition to the method for blasting rubber vulcanizates by blasting and the application of various fractions obtained in combination with bitumen, selective oil purification extract, butadiene styrene latex, unsaturated polyester resin, etc., depending on the required properties products with good sound and thermal insulation and waterproofing properties are obtained and can be used in construction.

SUMMARY OF THE INVENTION

The task to be solved is to create a material with thermal insulation properties with a sufficiently low coefficient of thermal conductivity, from which material can be produced different in shape and size products with a wider range of physical properties, such as relative weight, strength indicators, appearance and more, higher ignition temperature, etc. Another problem is the use of readily available and cheap starting materials for its production. A third problem is finding the use of rubber granulate and textile wool obtained by grinding tires and other rubber vulcanizates as waste.

These problems according to the invention are solved with a material comprising a rubber 5 pellet having a particle size distribution: 0.01 - 0.5;

0.5 - 1.0; 1.0 - 2.0; 2.0 - 3.0; 3.0 - 4.0; 4.0 - 5.0;

5.0 to 6.0, optionally also the wool obtained from the textile cord for grinding used tires included in a polymer selected from 10 from: polyurethane foam, polyvinyl acetate, foamed bakelite. According to the invention, the rubber granulate or textile wool obtained by crushing and grinding old tires (BG 50716,50830, 61158) is mixed and homogenized with binders by intensive stirring, after which the resulting mixture is poured into molds to obtain thermal insulation materials in the form of panels in the form and size according to the desired type of thermal insulation of floors, walls, roofs ² θ of buildings, heat pipes, packaging of electronic and radio-television products, refrigerators, freezers, boilers, shoes. Homogenization can also be carried out under pressure by injection of a rubber granulate and binder 25 into the mold. The type and amount of binders are determined by the granulometry of the rubber mills and the required thermal insulation and other physical parameters, such as relative weight, 30 density, hardness, bending resistance, ignition temperature. The shape and size of the molds correspond to the shape and size of the thermal insulation object. The desired panels are obtained without or with a certain pressure when the material is pressed after it is poured into the mold. The advantages of the material according to the invention are satisfactory thermal insulation properties, combined with a wide range of physical properties 40, such as sound and waterproofing, enabling the production of different products for different purposes. The development of the material addresses important environmental issues, such as the accumulation of $ 4 rubber waste and used tires and their treatment through environmentally friendly technologies to produce many useful products.

Examples of implementation and use of the invention

Example 1. A thermal insulation material of the following composition was prepared:

I

- rubber granulate with a particle size of 5.0 6.0 mm - 1.8 - 2.0 kg;

- polyurethane foam - 0.7 - 0.8 kg.

Mix and mix well the rubber mills with one or both components of the polyurethane foam (disocyanate and polyol) and then add the second ingredient or mix the two components of the polyurethane foam together with the mills and the resulting well-mixed mixture is poured into. The operation can also be performed with a machine for simultaneous injection into the mold of the two components of the polyurethane foam and the mills in order to uniformly mix the mills and the foam.

Purpose: panels with dimensions 500 x 500, 1000 x 1000, 760 x 1000, etc. and thicknesses of 10, 20, 30, 50, 60 mm depending on the requirements for thermal conductivity for thermal insulation of walls, roofs of buildings, boilers, refrigerators, freezers, packages of electronic and radio-television products. The panels can be sandwich with paper or sheet metal sheeting.

Example 2. Prepare thermal insulation material with the following composition:

- rubber granulate with a particle size 0,01 1,0 mm - 1,8 - 2,0 kg;

- Polyurethane foam 0.8 - 0.9 kg.

Mixing is carried out as described in Example 1.

Intended use: for thermal insulation of pipes of the following sizes: 1/2 ”, 3/4”, 1 ”, 1 1/2”, 1 3/4 ”, 2”, 2 1/2 ”, 3”, 3 1 / 2 ”, 4”, as well as for thermal insulation of refrigerators, water heaters and for packaging of products.

Example 3. Thermal insulation material with the following composition:

- rubber granulate with a particle size of 3.0 4.0 mm - 1.8 - 1.9 kg;

polyvinyl acetate 0.3 - 0.4 kg.

Mixing is carried out as described in Example 1.

Purpose: panels of different thicknesses and sizes for thermal insulation of floors and walls.

Example 4. Prepare thermal insulation material with the following composition:

- rubber granulate with a particle size of 1.0 - 3.0 mm - 1.8 - 2.0 kg;

foamed bakelite 0.3 - 0.4 kg.

Mixing is carried out as described in Example 1. After injection into the mold, a pressure of up to 180 kg / cm is applied, depending on the 5 shapes and dimensions of the floor insulation panels of the buildings.

Example 5. A thermal insulation material was obtained with the following composition:

- wool obtained from the textile cord when grinding tire tires - 1.5 - 2.0 kg;

- polyurethane foam or foamed bakelite or polyvinyl acetate - 0,5 - 0,6 kg.

The blending technology is exactly the same as in Example 1.

Purpose: panels of the same size as those shown in Example 1.

Example 6. A heat-insulating material of the following composition was obtained:

- rubber granulate with a particle size 0,01 1,0 mm - 1,5 2,0 kg;

- polyvinyl acetate adhesive 0.5 - 0.6 kg.

Mix the rubber mills with the adhesive and mix well to maximize the wetting of the mills. The resulting mixture was poured into a mold of the required 25 sizes and shape. The mixture can be applied to the surface for insulation with a pump, spatula or other instrument. It is especially effective to cover floors of shops, garages, warehouses, etc.

The coefficient of thermal conductivity of the material obtained according to the examples is in the range - 0.42 to 0.43 W / m ° C and the density from 118 to 286 kg / m ³ .

Claims (1)

35 Claims 1. Thermal insulation material, characterized in that it consists of 0.01 - 6.0 mm granulate with a granulometry of granules, ground 40 waste automobile tires and / or other rubber waste, optionally a wool of textile cord and polymer with low thermal conductivity, preferably polyurethane foam, polyvinyl acetate and foamed bakelite.