KR100951141B1 - Thick film type eco-friendly complex composition for finishing the floor comprising calcium salt based modified compound and natural clay compound - Google Patents

Abstract

PURPOSE: An environmentally-friendly thick-film composition for floor materials is provided to improve the self-leveling effect, fast-curing property, shock resistance, adhesion performance efficiency, and abrasion resistance of a finishing member. CONSTITUTION: An environmentally-friendly thick-film composition for floor materials contains 30~80 parts by weight of a calcium salt system transformed compound and 20~70 parts by weight of a natural clay compound. The mixture additionally consists of 0.5~5 parts by weight of dispersing agent and 0.1~1.0 part by weight of a retarder based on 100 parts by weight of the mixture. The dispersing agent is selected from the group consisting of a vinyl acetate compound, an ethylene-acrylate copolymer, and oxy carboxylate. The retarder is selected from the group consisting of a polyamide compound, polyalcohol and cellulose. The calcium salt system transformed compound is a slag system compound which is selected from the group consisting of blast furnace slag, converter slag and steel-manufacturing slag. The natural clay compound is selected from the group consisting of a kaolin system mineral, a montmorillonite group mineral, illite, glauconite, yellow soil, and processing silica.

Description

Thick Film Type Eco-Friendly Complex Composition for Finishing the Floor Comprising Calcium Salt Based Modified Compound and Natural Clay Compound}

The present invention relates to an environment-friendly thick film composite composition for floor finishing materials, and more particularly, including a calcium salt-based modified compound and a natural clay compound, to improve the self-horizontal effect, fastness, impact resistance, adhesion performance, wear resistance, and the like of the floor finishing material. The present invention relates to an environment-friendly thick film composite composition for floor finishing materials that does not emit harmful environmental substances such as TVOC and formaldehyde.

Where floor finishing materials are used, such as the underground parking lot of apartments and public sports facilities, are gradually becoming a place for people's living.In accordance with this trend, floor finishing materials can be further secured from the concept of dustproofing or finishing. Higher quality has become important, and it is also necessary to satisfy the desire for eco-friendly characteristics according to well-being needs.

Conventionally, a concrete floor finish such as a parking lot or a sports facility was constructed using a finish containing epoxy and urethane resins, which are organic materials. If a coating film of a certain thickness is formed on the surface of the cured concrete floor and cured with a finishing material containing epoxy resin or urethane resin, it can effectively block the concrete floor from the external environment at the initial stage of construction, thereby providing excellent finishing effect in a short time. to be.

However, the finishing material containing epoxy resin shows excellent properties in strength, dustproofness, abrasion resistance, adhesive strength, gloss, etc., but the air permeability is poor so that the adhesive surface or the upper epoxy resin layer does not pass moisture contained in the concrete below. . Therefore, when the coating film is formed in a state where the concrete is not sufficiently dried, if the moisture contained in the concrete is vaporized due to the difference in temperature or humidity, a layer is formed between the coating film and the concrete by volume expansion and the lifting of the finish occurs. In addition, the finishing material containing the epoxy resin is expensive construction cost and there is a difficulty in repairing due to breakage.

The finishing material containing a urethane resin is excellent in the strength of a coating film, or waterproofing function. In addition, since it has a certain degree of elasticity and strong resistance to deformation even when exposed to direct sunlight for a long time, it is widely used for rooftop waterproofing materials, ground track flooring materials, and gymnasium flooring. However, including the urethane resin has a weak disadvantage in heat.

In addition, when epoxy and urethane resins are used as the flooring, there is a problem that the curing time may be too long. If the air temperature is low (under 5 ° C) and in the shade, such as underground parking lot, the application may not be possible, which consumes a lot of manpower and time. In addition, although the gloss property is excellent after the operation is completed, there is a problem that the friction noise of the tire of the vehicle is severe and the sliding resistance is lowered when used as the parking lot floor.

Particularly problematic when using epoxy and urethane, both include volatile organic compounds such as VOCs and environmental pollutants such as environmental hormones such as bisphenol A. These environmental pollutants can have harmful effects on the construction environment and the human body. In addition, organic finishes include uncured resins and hardeners, especially amines and other reactive diluents (thinner, toluene, xylene, etc.), which is highly volatile and highly flammable. And when a fire occurs, toxic gas is generated, which can lead to serious safety problems. For this reason, in order to solve the problem of the conventional finishing material, a method of forming a separate protective layer by forming an inorganic and / or organic / inorganic composite protective layer such as powder hardener has been shown, but inorganic or organic / inorganic composite protective system The layer may have a problem of peeling or peeling off, causing secondary contamination and losing its original function as a protective material, which is not a fundamental problem solution.

Therefore, the controversy of environmental law regulation on the finishing materials containing epoxy or urethane has been continued. Recently, in Korea, as a floor finishing material for concrete structures including underground parking lots, it is mandatory to label the finishing materials according to formaldehyde emission. In Korea, the revised edition of KS F 4937 [Surface Finishes for Parking Floors] in 2008 strengthened the basic performance of finishing materials such as impact resistance, adhesive performance, and watertightness, while strictly setting emission standards for environmentally harmful substances such as TVOC and formaldehyde. Attempts have been made to gradually standardize the quality standards for parking lot floor finishes with eco-friendly characteristics.

Therefore, there is a need for related technologies that can prevent the occurrence of environmentally harmful substances at the same time and provide eco-friendly finishing materials that respond to environmental regulations in the future by integrating eco-friendly materials. There is also a need for technology that significantly improves time.

The present invention is to solve the problems of the conventional floor finishing materials described above, and to provide a new concept of floor finishing composition that can improve the economics and construction properties and significantly shorten the curing time compared to the materials used as conventional finishing materials.

The present invention includes 30 to 80 parts by weight of the calcium salt-based modified compound, 20 to 70 parts by weight of the natural clay compound, and 0.5 to 5.0 parts by weight of a dispersant and a retardant 0.1 based on 100 parts by weight of the mixture of the calcium salt-based modified compound and the natural clay compound. It provides an eco-friendly thick film-type composite composition for a floor finishing material comprising ~ 1.0 parts by weight.

In this case, the calcium salt-based modified compound may be at least one selected from the group consisting of a slag compound containing calcium salt, a gypsum compound, calcium carbonate, quicklime and hydrated lime, and the natural clay compound may be a kaolin mineral or a montmorillonite-based compound. It may be one or more selected from the group consisting of minerals, illite, haeolite, loess and processed silica.

The dispersant may be at least one selected from the group consisting of vinyl acetate compounds, ethylene-acrylate copolymers, lignin sulfonates and derivatives thereof, oxycarboxylic acid salts, and polycarboxylic acid polymer compounds. The retardant may be at least one selected from the group consisting of polyamide compounds, polyalcohols, celluloses, sugars, silicides, and phosphates.

According to the present invention, it is possible to provide a new concept of floor finishing composition which can improve environmental problems, wear resistance and impact resistance of the conventional floor finishing material and can greatly shorten the curing time.

The present invention provides an environment-friendly thick film-type composite composition for floor finishing materials comprising calcium salt-based modified compounds and natural clay compounds as main components instead of epoxy or urethane. The composition comprising the calcium salt-based modified compound and the natural clay compound has an environmentally friendly property that can fundamentally block the generation of environmentally harmful substances such as TVOC or formaldehyde, non-combustible properties, self-horizontal effect (S) / L) and fast hardness. In particular, it may have excellent characteristics in impact resistance, adhesion performance and wear resistance required as a floor finishing material of a space such as a parking lot.

Hereinafter, the components and features of the eco-friendly thick film-type composite composition for a floor finishing material of the present invention will be described in more detail.

Calcium salt-based modified compounds contained in the environment-friendly thick film composite composition for flooring materials of the present invention,

① slag compounds such as blast furnace slag, converter slag, steelmaking slag containing calcium salt such as Ca (NO ₃ ) ₂ , CaSO ₄ , CaCO ₃ , etc.

Gypsum-based compounds such as dihydrate gypsum, α type hemihydrate gypsum, β type hemihydrate gypsum and Ⅱ-anhydrite gypsum;

③ Other calcium carbonate, quicklime, slaked lime and

④ mixture of the above ① to ③

It may include.

The calcium salt-based modified compound has a nonflammable property and also improves impact resistance, adhesion performance, and wear resistance. In particular, there is no generation of environmental pollutants such as TVOC, formaldehyde, etc., and due to the self-horizontal (S / L) and fast hardening effect, mass construction is possible, thereby reducing the air. Therefore, 30 to 80 parts by weight of the calcium salt-based modified compound is added when preparing the thick-film composite composition of the present invention.

If the content of the calcium salt-based modified compound is less than 30 parts by weight, the self-horizontal properties and the fast hardness are not sufficient, and thus, advantageous properties are not obtained in the construction of the floor finishing material. It is not easy to work, and the workability is deteriorated, and overexpansion can occur, which can cause cracks on the surface.

Natural clay compound contained in the thick-film composite composition of the present invention,

① kaolin minerals such as kaolinite, decite, and halloysite,

Montmorillonite minerals such as montmorillonite, bentonite, acidic clay,

③ Other illite, sea rock, loess, processed silica and

④ mixture of the above ① to ③

It may include.

The natural clay compound is a harmless environment-friendly material that is harmless to the human body and has the characteristics of non-combustible properties such as calcium salt-based modified compounds, and does not generate any environmental pollutants such as TVOC, formaldehyde, etc. 20 to 70 parts by weight of the natural clay compound is added.

When the content of the natural clay compound is less than 20 parts by weight, the fluidity may be degraded in the construction step, which is not good for workability, and the strength of the finish itself may be lowered. On the other hand, if the content exceeds 70 parts by weight layer separation occurs in the compound may not be uniformly mixed of the components and the price is expensive and the economic efficiency may be lowered.

Eco-friendly thick film composite composition for the floor finishing material of the present invention includes additives in addition to the calcium salt-based modified compound and the natural clay compound, the additives include a dispersant, a retardant and the like are added mainly to improve the ease of operation.

The dispersant enables to secure excellent workability of the compound during construction through the fluidity control using the dispersion effect between the calcium salt-based compound particles. Therefore, the dispersing agent is added to the thick-film composite composition of the present invention in the range of 0.5 to 5.0 parts by weight based on 100 parts by weight of the calcium salt-based modified compound and the natural clay compound.

The dispersant may be a vinyl acetate compound, an ethylene-acrylate copolymer, a lignin sulfonate and derivatives thereof, an oxycarboxylic acid salt, a polycarboxylic acid polymer compound, and a mixture thereof. If the dispersant is added in less than 0.5 parts by weight, it is difficult to ensure excellent workability due to insufficient fluidity and dispersion effect, whereas if it exceeds 5.0 parts by weight, the fluidity is excessively increased, the components can be separated and the price is increased and economical Can be degraded.

In the present invention, a retardant may be included, and the retardant is used to adjust curing time of the calcium salt compound. For proper curing time, the retardant is added in a range of 0.1 to 1.0 parts by weight based on 100 parts by weight of the calcium salt-based modified compound and the natural clay compound.

It can be used as the retardant is a polyamide compound, polyalcohol, cellulose, sugar, silicides, phosphates and mixtures thereof. If the retardant is included in less than 0.1 parts by weight, the curing time control effect of the calcium salt-based modified compound is insufficient. On the other hand, the addition of a retardant exceeding 1.0 parts by weight excessively delays the curing time, which is undesirable because it may affect the construction period.

Hereinafter, the operation and effects of the environment-friendly thick film composite composition for the floor finishing material of the present invention will be described in more detail using the following examples.

(Example 1)

In this embodiment, the inventive examples and comparative examples of the comparative composition of the thick-film composite composition of the present invention were prepared in the following composition ratios.

Inventive Example 1 Inventory 2 Inventory 3 Comparative Example 1 Comparative Example 2 Remarks cement - - - 150 g 100 g Slag - - - 300 g 175 g Fly ash - - - - 175 g Thickener - - - 1 g 1 g Methyl Cellulose Antifoam - - - 1 g 1 g KAF215 Calcium salt compound α-type half gypsum 350 g 300 g 250 g - - Calcium carbonate 350 g 300 g 250 g - - Natural clay compounds ocher 50 g 50 g 50 g - - Processed silica sand 250 g 350 g 450 g 550 g 550 g Dispersant 30 g 20g 10g - - Vinyl acetate compound Retardant 2 g 2 g 2 g - - Polyamide compound

The composition was evaluated for workability and setting time according to the criteria of thick film-type composite composition for the parking lot floor. Relevant criteria were measured according to the cement-based magnetic horizontal mortar test standard of KS F4041, the measurement results of Examples and Comparative Examples are shown in Table 2 below.

division Flow (mm) Setting time First minute Termination (minutes) Inventive Example 1 242 94 124 Inventory 2 245 101 138 Inventory 3 251 105 142 Comparative Example 1 235 152 312 Comparative Example 2 233 150 308

As can be seen in Table 2, the flow value is found to increase as the content of processed silica sand, which is a natural clay compound, is increased. It can be seen that it can be improved.

And the condensation time is faster as the calcium salt-based modified compound content increases. According to the inventive example of the present invention, it can be seen that about 30.9 to 38.1% at the beginning and about 50.4 to 60.2% at the end are promoted compared to the comparative example.

(Example 2)

In this embodiment, Comparative Examples 1 and 2 of the present invention and Comparative Examples 1 and 2, which were previously commercialized, were performed by performing a flame retardant class 1 test, and the results are shown in Table 3 below.

division exam Test Items result Inventive Example 1 Inventory 2 Inventory 2 Comparative Example 1 Comparative Example 2 Flame retardant class 1 test Surface test Melting, extinction none none none none none Arson Deformation none none none none none Back crack (mm) 0 0 0 0 0 Afterglow (seconds) 0 0 0 0 0 Exothermic Factor (C _A ) 0 0 0 0 0 Temperature time area (℃ .min) Within 3 minutes 0 0 0 0 0 3 minutes later 0 0 0 0 0 Test Temperature difference (℃) +1 +1 +1 +2 +2

Table 3 is a result of testing the flame retardancy according to the flame retardancy test method of the interior material and structure of the building of KS F 2271, all of the invention examples 1, 2, 3 and Comparative Examples passed the flame retardant class 1 test, also in the substrate test furnace After heating at 750 ± 10 ℃ for more than 20 minutes and inserting the test specimen, the temperature change in the furnace showed that there was no significant difference in temperature change regardless of the content of calcium salt modified compound and natural clay compound.

Therefore, the thick-film composite composition of the present invention can be seen to have the same level as the products commercially available in the flame retardant properties.

(Example 3)

In the present Example was compared by performing the quality standard test of KS F 4937 for Comparative Examples 1 and 2 are commercialized with Inventive Examples 1 to 3 of the present invention, the results are shown in Table 4 below.

division Impact performance Adhesion performance (N / ㎡) Lubrication Load Resistance Watertight performance Surface condition Thickness Depth (mm) Inventive Example 1 clear 3.64 clear 1.5 clear Inventory 2 clear 3.59 clear 1.6 clear Inventory 3 clear 3.49 clear 1.8 clear Comparative Example 1 clear 2.64 clear 2.4 clear Comparative Example 2 clear 2.53 clear 2.7 clear KS F 4937 Quality Standard No abnormalities such as drilling 1.2 or more No cracks, etc. 3mm or less Not pitched

As can be seen in Table 4, Inventive Examples 1 to 3 and Comparative Examples 1 and 2 are all suitable for the KS quality standards, but it can be seen that the inventive examples of the present invention are 2.6-7.0% higher than the Comparative Examples in terms of adhesion performance. . Furthermore, it can be seen that the thickness reduction depth of the wheel load resistance performance is improved by 25 to 44%, which is superior to the existing products.

(Example 4)

In this embodiment, the pollutant emission test was carried out on the finishing materials (Comparative Example 3) and the finishing materials (Comparative Example 4) containing urethane resins, which are conventionally used and are commercially used. In Table 5, the release of TVOC and formaldehyde was compared by KS F 4937 quality standards.

division Inventive Example 1 Inventory 2 Inventory 3 Comparative Example 3 Comparative Example 4 KS F 4937 Quality Standard Pollutant Release Test TVOC (mg / ㎡ · hr) Not detected Not detected Not detected 10.7 9.6 4 or less Formaldehyde Not detected Not detected Not detected Over-detection of threshold Over-detection of threshold 1.25 or less

As can be seen in Table 5, inventive examples 1 to 3 of the present invention, the generation of contaminants was not detected, but in Comparative Examples 3 and 4 containing an epoxy or urethane resin, TVOC of the contaminants to an unsuitable level of the KS standard Formaldehyde was also released in excess of the reference value.

Judging from the results of Examples 1 to 4, the floor finishing material constructed with the composite composition of the present invention is easy to install and physical properties are equivalent to or superior to those of commercially available floor finishing materials, and discharge of pollutants. Since there is no eco-friendly feature at all, it can be seen that it can be used as an excellent floor finishing material in terms of environment and performance compared to the existing.

Claims (9)

30 to 80 parts by weight of a calcium salt-based modified compound including calcium nitrate [Ca (NO ₃ ) ₂ ] and calcium carbonate [CaCO ₃ ]; 20 to 70 parts by weight of the natural clay compound; Based on 100 parts by weight of the mixture of the calcium salt-based modified compound and the natural clay compound, 0.5 to 5.0 parts by weight of a dispersant comprising at least one member selected from the group consisting of vinyl acetate compounds, ethylene-acrylate copolymers and oxycarbonates; Eco-friendly thick film composite for flooring materials containing calcium salt-based modified compound and natural clay compound, characterized in that it comprises 0.1 to 1.0 parts by weight of a retardant containing at least one selected from the group consisting of polyamide compound, polyalcohol, cellulose Composition. delete The method of claim 1, wherein the calcium salt-based modified compound comprising calcium nitrate [Ca (NO ₃ ) ₂ ] and calcium carbonate [CaCO ₃ ] is a slag-based compound, the slag-based compound is blast furnace slag, converter slag and steelmaking slag Eco-friendly thick film-type composite composition for floor finishing materials containing calcium salt-based modified compounds and natural clay compounds, characterized in that at least one member selected from the group consisting of. delete The method of claim 1, wherein the natural clay compound contains calcium salt-based modified compound and natural clay compound, characterized in that at least one selected from the group consisting of kaolin-based minerals, montmorillonite-based minerals, illite, haeolite, ocher and processed silica Eco-friendly thick film composite composition for finished floor finishing materials. [Claim 6] The environment-friendly thick film composite composition of claim 5, wherein the kaolin-based mineral is at least one selected from the group consisting of kaolinite, dicite, and halosite. . According to claim 5 or 6, wherein the montmorillonite-based mineral is at least one selected from the group consisting of montmorillonite, bentonite and acidic clay, environmentally friendly thick film type for flooring materials containing calcium salt-based modified compounds and natural clay compounds Composite composition. delete delete