KR20010080851A - Method for surface treating using powder of used-up urethane or rubber - Google Patents

Abstract

PURPOSE: A method for treating surface by using powder of waste urethane or waste resin is provided to save the resource with increasing recycling of the waste urethane and the waste resin by reclaiming the waste urethane or the waste resin and applying it to the surface of a structure and to reduce the environmental pollution. CONSTITUTION: In the method for treating surface by using powder of waste urethane or waste resin, a few stages are included. In the drying stage, the reclaimed urethane powder or the reclaimed resin powder is dried through an indirect heat wind machine and a dehumidifier in the temperature of 70-120 deg.C for 10-15 minutes and the drying degree over 98 % is maintained. In the combining stage, the reclaimed urethane pulverized material or the reclaimed resin pulverized material of 100Kg, the solvent of 5-10Kg, the adhesive of 20-40Kg and the hardener of 2-5Kg are injected into a combining machine and are stirred. In the surface treating stage, the water and the alien material are removed from the surface and the prima surface treatment is carried out in the clean condition. In the urethane or resin layer forming stage, the reclaimed urethane mixed material or the reclaimed resin mixed material are sprayed on the place, which is to be constructed, and an urethane or resin layer is formed with the appropriate thickness. In the drying stage, the urethane or resin layer is naturally dried.

Description

{Method for surface treating using powder of used-up urethane or rubber}

The present invention relates to a surface treatment method using waste urethane or waste rubber powder, and more particularly, to recycle waste urethane or waste rubber, which is an industrial waste, to be used as a surface treatment material of a building, thereby saving resources and environment. The present invention relates to a surface treatment method using powder of waste urethane or waste rubber to suppress contamination.

In general, urethanes and rubbers are widely used throughout the industry due to their excellent elasticity, abrasion resistance, oxidation resistance, oil resistance, aging resistance, thermal insulation, and mechanical strength, so that a large amount of waste urethane and waste rubber are generated, and the amount is increased year by year. There is a trend.

In particular, since the waste urethane and waste rubber are simply disposed, the recycling of resources is greatly reduced, leading to a waste of resources, and in consideration of the fact that they depend on imports, it also causes a considerable waste of foreign currency in the country.

In addition, the simple disposal of waste urethane and waste rubber increases the amount of industrial waste and can not be decomposed for a long time due to the above characteristics, thereby increasing environmental pollution and causing various problems due to recycling.

Therefore, by recycling the waste urethane or waste rubber of the present invention to be applied to the surface of the building and surface treatment, to increase the recycling degree of waste urethane and waste rubber to save resources and the amount of waste due to waste urethane and waste rubber To minimize environmental pollution.

In order to achieve the above object, the surface treatment method using the waste urethane or waste rubber powder of the present invention is a separation step of separating the waste urethane or waste rubber, which is industrial waste by color, and the waste urethane separated in the separation step. Or a washing step of removing foreign matters such as dirt attached to the waste rubber, and a grinding step of grinding waste urethane or waste rubber in a clean state washed in the washing step to the size of the required particles, and The drying step of drying the waste urethane or waste rubber in the form of granules by indirect hot air, and mixing the waste urethane or waste rubber in the granular state after the drying step is added to the blender and stirred by adding colorant, stearic acid, CaO and Ca. The mixing step and the waste urethane or waste rubber in the form of particles in which various additives are mixed in the mixing step are melted by an extruder. After the melting step and the forced urethane mixture or waste rubber melted in the melting step and forced compression at the same time to the required thickness, and cutting the waste urethane or waste rubber mixture compressed in the pressing step to a predetermined size In the waste urethane recycling method formed by the regeneration step of grinding to the required particle size; Drying step of drying the regenerated urethane powder or regenerated rubber powder, and the regenerated urethane powder or regenerated rubber powder dried in the drying step into a blender, mixed with specially mixed polyurethane resin, curing agent, adhesive and dissolving agent And a surface treatment step of removing the moisture and the substance from the surface of the building or the general tile to which the recycled urethane or the regenerated rubber mixture of the compounding step is to be applied and then subjecting the surface to the prima; Or a spraying step of spraying and applying the regenerated rubber mixture onto the surface-treated surface, and a completion step of completely drying the regenerated urethane layer or rubber layer applied in the spraying step.

When explaining the embodiment of the present invention in more detail as follows.

(Example)

1st process

First, waste urethane or rubber is separated and collected from various industrial wastes, and then loaded at a predetermined place.

The foreign substances mixed in such waste urethane or waste rubber are manually removed, but various metals are also removed using a magnet.

Here, when washing a large amount of waste urethane or waste rubber, it is preferable to remove the metal after washing using a washing machine.

Waste urethane or rubber from which this substance has been removed is selected and pulverized through a crusher and then heated in an indirect hot air (heat-drying) at 70 ℃ -120 ℃ for 10 to 15 minutes, and the dryness is over 98%. Be sure to

The particle size of the waste urethane or waste rubber to be crushed here is most preferably 11-2.5mm.

100 Kg of the waste urethane or rubber pulverized and dried as described above is charged with a certain amount of pigments or dyes, which are organic and inorganic colorants, and 2-3Kg of saturated fatty acid stearic acid to facilitate coloring reaction and melting, and CaO 2 for secondary dehumidification. In order to smoothly melt -3Kg and waste urethane or waste rubber, and adjust hardness, etc., Ca is added to a 0-15Kg blender and stirred and mixed evenly.

Here, the inside of the blender is blended at a medium speed of about 10 to 15 minutes while maintaining a heated state of about 70 ° C.-100 ° C. to generate a mixture.

This mixture is melted using an extruder and then pressed to compression to the required thickness through forced cooling.

Here, the inside of the extruder to maintain a temperature of 170 ℃-230 ℃.

In addition, forced cooling cools directly by 0 degreeC-5 degreeC.

In addition, the thickness of the mixture pressed and pressed is preferably about 1.5-7 mm.

Thus compressed waste urethane or waste rubber is cut to a predetermined size or less, and the cut waste urethane or waste rubber is selected and ground again to the required particle size.

Here, the pulverized particles and the fine powder generated by the pulverization are separated to obtain recycled urethane powder or waste rubber powder.

2nd process

The recycled regenerated urethane powder or regenerated rubber powder is dried for about 10 to 15 minutes at 70 ° C.-120 ° C. through an indirect hot air blower and a dehumidifier to maintain a dryness of 98% or more.

To this dry regenerated urethane powder or regenerated rubber powder 100Kg, 2-5Kg of specially modified polyurethane and a curing agent, 20-40Kg of adhesive, and 5-10Kg of a dissolving agent are added to the blender, and the mixture is thoroughly stirred to mix well.

It is preferable to use toluene here as a solubilizer.

On the other hand, the surface of the construction site, such as buildings, removes moisture and foreign substances to keep the surface of the prima completely in a clean state.

In the case of the general tile, the surface of the tile in the semi-processed state does not have to be treated with a prima.

In such a state, the regenerated urethane mixture or regenerated rubber mixture sufficiently stirred in the blender is sprayed on the surface of the construction site or the general tile by using a spray gun, etc., and applied at an appropriate thickness.

When the application of the recycled urethane powder or the recycled rubber powder is completed, such as construction site of the building is dried naturally to form a recycled urethane layer on the surface.

On the other hand, pavement such as road may be applied by spraying the regenerated urethane powder or the regenerated rubber powder in the above-described manner on the surface of the asphalt layer or the concrete layer with a certain thickness.

The present invention does not merely use regenerated urethane powder or regenerated rubber powder, but may be used by mixing regenerated urethane powder and regenerated rubber powder, if necessary.

Therefore, such a construction uses regenerated urethane powder or regenerated rubber powder, so it is excellent in water resistance, soundproofing, cold resistance, and abrasion resistance, and has a very wide versatility.

As described above, the surface treatment method using the waste urethane or waste rubber powder of the present invention is a drying step of drying the recycled urethane powder or recycled rubber powder, and the regenerated urethane powder or recycled rubber powder dried in the drying step Specially modified polyurethane resin, hardener, adhesive and dissolving agent are added together into the blender to mix and the surface treatment to remove water and foreign substances on the surface of the building to apply the mixture of the above blending step Waste urethane or waste rubber because it comprises a spraying step of applying by spraying the mixture in the compounding step on the surface treated, and a complete drying of the regenerated urethane layer or regenerated rubber layer applied in the spraying step By regenerating and applying to the floor of building or surface of general tile By applying to the upper surface of the furnace surface treatment, it is possible to reduce the environmental pollution by increasing the recycling degree of waste urethane or waste rubber to save resources and minimize the amount of waste caused by waste urethane or waste rubber.

Claims (1)

A separation step of collecting waste urethane or pego rubber, which is industrial waste, and separating it by color; a washing step of removing foreign substances such as waste urethane or waste rubber attached to the separation step; and washing in the washing step A grinding step of grinding the waste urethane or waste rubber in a clean state to a required particle size; and a drying step of drying the waste urethane or waste rubber ground in the grinding step with indirect hot air, and the drying step Putting the waste urethane or waste rubber in the granular state into a blender, and mixing the colorant and stearic acid, CaO and Ca, and stirring, and melting the waste urethane or waste rubber in the form of granules mixed with various additives in the blending step with an extruder. Melting step and forced cooling of the waste urethane mixture or waste rubber mixture melted in the melting step In the crimping step of crimping to the required thickness, and the waste urethane or waste rubber recycling method formed by the waste urethane mixture or waste rubber compressed in the crimping step to a predetermined size and then crushed to the required particle size; A drying step of drying the regenerated processed regenerated urethane powder or regenerated rubber powder by using an indirect hot air blower and a dehumidifier at a temperature of 70 ° C.-120 ° C. for about 10 to 15 minutes to maintain a dryness of at least 98%; The mixing step of mixing evenly stirred by putting into the regenerated urethane powder or regenerated rubber powder 100Kg dried in the drying step 2-5Kg, 2-40Kg adhesive, 20-40Kg adhesive, 5-10Kg dissolving agent in a blender, A surface treatment step of treating the surface of the prima in a state in which it is kept clean by removing moisture and the substance on the surface of the construction site of the building to which the recycled urethane mixture or recycled rubber mixture blended in the compounding step is applied; Forming a urethane layer or a rubber layer by spraying the regenerated urethane mixture or the regenerated rubber mixture to the construction site by using a spray gun, etc., 1-3 times to the construction site after the surface treatment step is completed, and forming a proper thickness; The surface treatment method using the powder of the waste urethane or waste rubber, characterized in that consisting of a drying step of naturally drying the urethane layer or rubber layer applied in the urethane layer or rubber layer forming step.