KR101252447B1 - Quick hardening environment-friendly flooring material and constructing methods using thereof - Google Patents

Abstract

PURPOSE: An ultra-rapid hardening environmental-friendly flooring material is provided to avoid the use of harmful plasticizer or heavy metal catalyst and and to have excellent adhesive strength, compression strength, and chemical resistance. CONSTITUTION: An ultra-rapid hardening environmental-friendly flooring material consists of 60-90 weight% of polyurethane prepolymer, 5-30 weight% of an emulsion hardener, and 5-20 weight% of a pulverized body. A manufacturing method of the polyurethane prepolymer comprises a step of reacting 25-30 weight% of polyether polyol, polyester polyol, copolymer polyol, ethylene glycol, propylene glycol, or a mixture thereof and 70-75 weight% of methylene diphenyl diisocyanate. The emulsion curing agent consists of castor oil, hydrogenated castor oil, or a mixture thereof. The pulverized body consists of ceramic bonding agent, silica, and cement, or a mixture thereof.

Description

Quick hardening Environment-friendly Flooring Material and Constructing Methods Using Thereof}

The present invention relates to an ultrafast curing type eco-friendly flooring material and a construction method using the same, and more particularly, to an ultra-fast curing type eco-friendly flooring material used for floor construction of a rooftop floor of a building, a freezing warehouse, a food factory or a barn, and a construction method using the same. It is about.

Normally, the flooring coating for the construction of a new building or the repair of an existing building is to clean the concrete's latent or foreign matter, grind it with a grinder to clean the base, and then use epoxy or oil-based or two-component epoxy or After removing all pores of concrete by painting with urethane primer, use general floor paint such as solvent-free epoxy paint, urethane paint and thinner from 100 micron to 10mm thick.

However, this method is cracked due to the hydration process of the concrete and the gas from the pores over time, water due to the osmotic pressure, shrinkage expansion due to the temperature, etc. due to the deterioration and hydrolysis of the concrete, 1 to 2 After a year, problems such as cracking, peeling, and lifting of the coating film occur, and it is necessary to repair it frequently.

To overcome this problem, various types of building flooring compositions have been developed that adhere well to concrete and can eliminate problems such as hydration, deterioration and hydrolysis of concrete.

Conventional flooring compositions having the above-mentioned purpose usually use a phthalate system (dioctylphthalate, dibutyl phthalate, diisobutyl phthalate, etc.) as a plasticizer.

The phthalate plasticizer is a chemical additive used to soften plastics, and is often used to soften polyvinyl chloride (PVC).

The representative material of the above-mentioned phthalate-based plasticizer is diethylhexyl phthalate (DEHP), which is widely used in various PVC products such as cosmetics, toys, detergents, and home flooring, but is currently classified as an environmental hormone estimating substance. Prohibited use.

However, although the above-described phthalate-based material is an environmental hormone estimating material, there is a problem in that it is sometimes used as a plasticizer of the flooring composition and thus is not environmentally friendly.

In addition, in the case of conventional urethane flooring and epoxy flooring, there is a problem in that heat resistance and chemical resistance are not good and adhesiveness is also poor.

In order to overcome this problem, mortar-containing urethane resin mortar flooring material has been developed, but it contains a mortar is good adhesiveness, but there is a problem that the construction cost is increased due to the low fluidity of the construction thickness.

The present invention has been created to solve the above problems, it does not use a harmful plasticizer or catalyst of heavy metals, environmentally friendly, mechanical properties such as adhesion strength, compressive strength, has excellent chemical resistance, freezing warehouse, Provides eco-friendly flooring material for ultra-fast curing that can add the effect of preventing slipping in water-use floors such as food factories and barns.

The present invention

Polyether polyols, polyester polyols, copolymer polyols, polyurethane prepolymers prepared by reacting 25 to 30% by weight of a mixture of at least two selected from ethylene glycol, propylene glycol or 70 to 75% by weight of methylene diphenyl diisocyanate 60 to 90 weight percent;

5 to 30% by weight of an emulsion curing agent consisting of castor oil, hydrogenated castor oil or mixtures thereof; And

It provides an environmentally friendly flooring composition for ultra-fast curing consisting of 5 to 20% by weight of powder consisting of a ceramic binder, silica sand, cement or a mixture thereof.

In addition, the present invention provides a construction surface cleaning step to clean the construction surface to be installed on the floor;

A primer applying step of uniformly applying a primer on the construction surface after the construction surface clearance step is completed;

Polyether polyols, polyester polyols, copolymer polyols, polyurethane prepolymers prepared by reacting 25 to 30% by weight of a mixture of at least two selected from ethylene glycol, propylene glycol or 70 to 75% by weight of methylene diphenyl diisocyanate 60 to 90 weight percent;

5 to 30% by weight of an emulsion curing agent consisting of castor oil, hydrogenated castor oil or mixtures thereof; And

A stirring step of uniformly mixing by stirring the environment-friendly flooring composition for ultra-fast curing consisting of 5 to 20% by weight of powder consisting of a ceramic binder, silica sand, cement or a mixture thereof; And

It provides a flooring construction method comprising a flooring coating step of uniformly applying the eco-friendly flooring composition is agitated on the construction surface coated with a primer.

Eco-friendly flooring material for ultra-fast curing according to the present invention is environmentally friendly, does not use harmful plasticizers or catalysts of heavy metals, has excellent mechanical properties such as adhesion strength, compressive strength, chemical resistance, freezing warehouse, food factory, barn, etc. It is effective to prevent slipping on the floor using a lot of water.

Hereinafter, the present invention will be described in detail.

In one aspect, the present invention provides a polyether polyol, polyester polyol, copolymer polyol, ethylene glycol, propylene glycol or 25 to 30% by weight of a mixture of at least two selected from them and 70 to 75% by weight of methylene diphenyl diisocyanate 60 to 90% by weight of a polyurethane prepolymer prepared by reacting; 5 to 30% by weight of an emulsion curing agent consisting of castor oil, hydrogenated castor oil or mixtures thereof; And it provides an environmentally friendly flooring composition for ultra-fast curing consisting of 5 to 20% by weight of powder consisting of a ceramic binder, silica sand, cement or a mixture thereof.

In another aspect, the present invention comprises a construction surface cleaning step to clean up the construction surface to be installed on the floor; A primer applying step of uniformly applying a primer on the construction surface after the construction surface clearance step is completed; Polyether polyols, polyester polyols, copolymer polyols, polyurethane prepolymers prepared by reacting 25 to 30% by weight of a mixture of at least two selected from ethylene glycol, propylene glycol or 70 to 75% by weight of methylene diphenyl diisocyanate For ultra-fast curing consisting of 60 to 90% by weight, 5 to 30% by weight of emulsion curing agent consisting of castor oil, hydrogenated castor oil or mixtures thereof, and 5 to 20% by weight of powder consisting of ceramic binder, silica sand, cement or mixtures thereof It provides a flooring construction method comprising a stirring step of uniformly mixing the environmentally friendly flooring composition, and a flooring coating step of uniformly applying the environmentally friendly flooring composition, the stirring step is completed on the construction surface coated with a primer.

Flooring composition according to the present invention, preferably environmentally friendly flooring composition for fast curing is used for floor construction of new buildings or floor repair of existing buildings.

Eco-friendly flooring composition for ultra-fast curing according to the present invention consists of a polyurethane prepolymer, a curing agent and powder.

Herein, the polyurethane prepolymer may include 25 to 30% by weight of a polyether polyol, polyester polyol, copolymer polyol, ethylene glycol, propylene glycol, or a mixture of at least two selected from these, and 70 to 75% by weight of methylene diphenyl diisocyanate. It is made by reaction.

The polyol contained in the polyurethane prepolymer according to the present invention affects fluidity and workability before curing, and after curing, affects physical and chemical performance, and when used excessively, blistering and staining on the surface during curing Since it may occur, it is desirable to adjust the amount of use appropriately.

Polyols contained in the polyurethane prepolymers, such as polyether polyols, polyester polyols, copolymer polyols, ethylene glycol or propylene glycol, are prepared by reaction with methylene diphenyl diisocyanate.

The amount of the polyurethane prepolymer is preferably 60 to 90% by weight based on 100% by weight of the environmentally friendly flooring composition for ultra-fast curing.

The emulsion curing agent included in the eco-friendly flooring composition for super fast curing according to the present invention is a curing agent having an emulsion form including castor oil, for example castor oil, hydrogenated castor oil.

At this time, the curing agent is preferably in the form of an emulsion, the solvent preferably contains water, the amount of water is preferably at least 20% by weight or more based on the weight of the curing agent having the emulsion form.

The castor oil is a natural oil with iodine value of 120 or less, hydroxyl value of 100 to 200, acid value of 1 or less, and when mixed with the composition, depending on the amount of use, the curing rate, and physical and chemical performance after curing .

The amount of castor oil may be changed depending on the amount of solvent included in the curing agent having an emulsion form, for example, the amount of water or the amount of other additives used, but is preferably 20 to 80% by weight based on 100% by weight of the curing agent.

In particular, the emulsion curing agent according to the present invention may further comprise additives, for example additives consisting of at least two or more mixtures selected from these, such as tapering agents, chain extenders, pigments, fillers or the like.

Here, it is preferable to use the taper, chain extender, pigment or filler that is commonly used in the art.

In one embodiment, the taper is preferably one of trimesic acid ester, benzoic acid ester, ethylcyclohexane, 2,2,4-trimethyl-1,3-pentanediol diisobutylate.

In addition, the chain extender may be a polyester polyol having an alkylene side chain which is a polycondensate of 2-butyl-2-ethylpropane-1,3-diol and adipic acid having hydroxyl groups at both ends.

The pigment is used to add color to the flooring to be constructed, and any pigment may be used as long as it is a conventional pigment in the art having this purpose.

Preferred pigments may be inorganic pigments and / or organic pigments.

The inorganic pigments include iron oxide, iron hydroxide, chromium oxide, titanium oxide, or mixtures thereof.

At this time, iron oxide and iron hydroxide are reddish brown, chromium oxide is green, and titanium oxide is white.

The organic pigments may be carbon black, azo pigments or mixtures thereof.

On the other hand, the amount of the emulsion curing agent containing castor oil, hydrogenated castor oil according to the present invention is preferably 5 to 30% by weight based on 100% by weight of the environmentally friendly flooring composition for ultra-fast curing.

The powder according to the present invention is included in the eco-friendly flooring composition for the super fast curing serves as a binder.

The powder includes a ceramic binder, silica sand and / or cement in powder form, and the particle size of the powder is not particularly limited, but preferably has a number of micrometers or several nanometers.

Here, the composition of the ceramic binder, silica sand and cement constituting the powder is preferably used more than 40% by weight of the binder based on 100% by weight of the total powder, the remaining amount of silica or cement is used in the remaining 60% range Adjustable according to your choice.

However, the powder may be composed of only silica sand and / or cement without using the ceramic binder.

The ceramic binder is preferably used sodium silicate, potassium silicate, lithium silicate or a mixture of at least one of them.

Here, as the amount of the ceramic binder increases, the color, weather resistance and adsorptive power, and the coloring effect increase, and absorb the carbon dioxide floating in the air to effectively clean the air and absorb the entire ultraviolet wavelength region and the visible wavelength region. Can serve as a UV stabilizer.

The amount of the powder according to the present invention is preferably 5 to 20% by weight based on 100% by weight of the environmentally friendly flooring composition for ultra-fast curing.

The method of constructing the floor surface using the environmentally friendly flooring material for the super fast curing according to the present invention is not particularly limited as long as it is a method commonly used in the art, but such an example will be described in order to explain the present invention more easily. .

The construction method for environmentally friendly flooring material for ultra-fast curing comprises: a construction surface cleaning step of cleansing the construction surface to be constructed with flooring materials;

A primer applying step of uniformly applying a primer on the construction surface after the construction surface clearance step is completed;

Polyether polyols, polyester polyols, copolymer polyols, polyurethane prepolymers prepared by reacting 25 to 30% by weight of a mixture of at least two selected from ethylene glycol, propylene glycol or 70 to 75% by weight of methylene diphenyl diisocyanate For ultra-fast curing consisting of 60 to 90% by weight, 5 to 30% by weight of emulsion curing agent consisting of castor oil, hydrogenated castor oil or mixtures thereof, and 5 to 20% by weight of powder consisting of ceramic binder, silica sand, cement or mixtures thereof Stirring step of uniformly mixing by stirring the environmentally friendly flooring composition; And

And a flooring coating step of uniformly applying the eco-friendly flooring composition, in which the stirring step is completed, onto the construction surface to which the primer is applied.

Here, the construction surface cleaning step includes performing mechanical cleaning using equipment such as an abrasive or a grinding machine to remove the cement latency of the floor and clean the surface.

In addition, the primer of the primer coating step is to first paint on the bottom surface to protect the bottom surface from the physical impact applied to the bottom surface and to facilitate the subsequent coating, it is conventional in the art for this purpose Although it will not specifically limit if it is a primer to be used, It is good to use a resin primer to recommend.

As a specific embodiment, the primer may use the environmentally friendly flooring composition for the super fast curing according to the present invention, in this case it is good to apply a thin layer of the environmentally friendly flooring for the super fast curing.

Hereinafter, the present invention will be described in detail by way of examples. However, the following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Example 1

A polyurethane prepolymer prepared by reacting 28 g of polyether polyol and 72 g of methylene diphenyl diisocyanate was prepared.

Subsequently, an environment-friendly flooring composition for ultra-fast curing was prepared by mixing 20 g of the cured emulsion containing castor oil (mixing ratio of castor oil and water in a 1: 1 weight ratio) and 10 g of sodium silicate in 70 g of the polyurethane prepolymer.

[Example 2]

A polyurethane prepolymer prepared by reacting 20 g of polyether polyol, 8 g of polyester polyol and 72 g of methylene diphenyl diisocyanate was prepared.

Subsequently, an environment-friendly flooring composition for ultra-fast curing was prepared by mixing 20 g of an emulsion cured containing hydrogenated castor oil (mixing ratio of hydrogenated castor oil and water is 1: 1 weight ratio) and 10 g of potassium silicate in the polyurethane prepolymer.

[Example 3]

A polyurethane prepolymer prepared by reacting 20 g of polyether polyol, 8 g of ethylene glycol and 72 g of methylene diphenyl diisocyanate was prepared.

Subsequently, an environment-friendly flooring composition for ultra-fast curing was prepared by mixing 20 g of the cured emulsion containing castor oil (mixing ratio of castor oil and water in a 1: 1 weight ratio) and 10 g of lithium silicate in 70 g of the polyurethane prepolymer.

Example 4

A polyurethane prepolymer prepared by reacting 28 g of polyether polyol and 72 g of methylene diphenyl diisocyanate was prepared.

Then, to the polyurethane prepolymer 65g, the emulsion curing containing castor oil 15g (mixing ratio of castor oil and water is 1: 1 weight ratio), sodium silicate 10g, silica sand 5g and 5g cement was mixed to provide an environmentally friendly flooring composition for the initial curing Prepared.

[Example 5]

A polyurethane prepolymer prepared by reacting 28 g of polyether polyol and 72 g of methylene diphenyl diisocyanate was prepared.

An emulsion curing agent was then prepared by mixing 50 g castor oil, 10 g ethylcyclohexane, 10 g polyesterpolyol with alkylene side chains, 3 g iron oxide, 7 g titania filler and 20 g water.

Next, 20 g of emulsion curing and 10 g of sodium silicate were mixed with 70 g of the polyurethane prepolymer to prepare an eco-friendly flooring composition for initial curing.

[Experiment 1]

By applying the environmentally friendly flooring composition for ultra-fast curing according to Examples 1 to 5 on the concrete surface, mechanical properties, such as pot life, walking time, curing time, chemical curing time, adhesion strength, compressive strength, flexural strength , Tensile strength and the like were measured.

The results are shown in Table 1.

Example 1 Example 2 Example 3 Example 4 Example 5 Pot life (min) 12 13 14 15 14 Walking Time (hr) 13 12 13 15 13 Curing Time (hr) 24 25 25 26 25 Chemical curing time (day) 7 8 7 8 8 Adhesive strength (N / mm ² ) 1.5 1.7 1.6 1.7 1.8 Compressive strength (N / mm ² ) 40 39 41 43 42 Bending strength (N / mm ² ) 15 16 15 16 15 The tensile strength 5 5 6 7 6

As shown in Table 1, the pot life is 12 to 15 minutes when the floor construction using the super fast curing type eco-friendly flooring composition prepared according to Examples 1 to 5, the curing speed is fast, so that walking in half a day It was cured and found that adhesion strength, compressive strength, flexural strength and tensile strength had sufficient physical properties as flooring.

[Experiment 2]

Heat resistance, cold resistance, chemical resistance, moisture resistance and water absorption were measured after applying the eco-friendly flooring composition for ultra-fast curing prepared according to Examples 1 to 5 on the concrete surface.

Here, the heat resistance is to instantaneous exposure of the concrete coated with an environmentally friendly flooring composition for the initial curing at a maximum 150 ℃, cold resistance is exposed to -40 ℃ the concrete.

In addition, the chemical resistance of acetic acid (40%, 20 ℃), lactic acid (85%, 60 ℃), oleic acid (100%, 80 ℃), citric acid (60%, 20 ℃) ), Caustic soda, methanol (100%, 20 ° C) and sodium chloride (100%, 20 ° C), respectively.

The results are shown in Table 2.

Example 1 Example 2 Example 3 Example 4 Example 5 Heat resistance ○ ○ ○ ○ ○ Cold resistance ○ ○ ○ ○ ○ Chemical resistance ○ ○ ○ ○ ○ Moisture resistance ○ ○ ○ ○ ○ Adhesive ○ ○ ○ ○ ○ Absorption rate 0% 0% 0% 0% 0%

Here, ○ is good, △ is usually, × means poor.

As shown in Table 2, the environmentally friendly flooring composition for ultra-fast curing prepared according to Examples 1 to 5 showed good heat resistance, cold resistance, chemical resistance, adhesiveness, and no water absorption.

In particular, the eco-friendly flooring composition for ultra-fast curing according to the present invention contains water in the curing agent, it is relatively good moisture resistance (moisture tolerance) that is not sensitive to the moisture on the floor, it can be applied to the concrete with moisture Judging.

As described above, those skilled in the art will understand that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Therefore, it should be understood that the embodiments described above are all illustrative and not restrictive. The scope of the present invention should be construed as being included in the scope of the present invention without departing from the scope of the present invention.

Claims (3)

Polyether polyols, polyester polyols, copolymer polyols, polyurethane prepolymers prepared by reacting 25 to 30% by weight of a mixture of at least two selected from ethylene glycol, propylene glycol or 70 to 75% by weight of methylene diphenyl diisocyanate 60 to 90 weight percent;
5 to 30% by weight of an emulsion curing agent consisting of castor oil, hydrogenated castor oil or mixtures thereof; And
Eco-friendly flooring composition for ultra-fast curing consisting of 5 to 20% by weight of powder consisting of a ceramic binder, silica sand, cement or a mixture thereof.
The method of claim 1,
The ceramic binder is sodium silicate, potassium silicate, lithium silicate or environmentally friendly flooring composition for ultra-fast curing comprising a mixture consisting of at least one of them.
Construction surface cleaning step to clean the construction surface to be installed on the floor;
A primer applying step of uniformly applying a primer on the construction surface after the construction surface clearance step is completed;
Polyether polyols, polyester polyols, copolymer polyols, polyurethane prepolymers prepared by reacting 25 to 30% by weight of a mixture of at least two selected from ethylene glycol, propylene glycol or 70 to 75% by weight of methylene diphenyl diisocyanate For ultra-fast curing consisting of 60 to 90% by weight, 5 to 30% by weight of emulsion curing agent consisting of castor oil, hydrogenated castor oil or mixtures thereof, and 5 to 20% by weight of powder consisting of ceramic binder, silica sand, cement or mixtures thereof Stirring step of uniformly mixing the eco-friendly flooring composition; And
Eco-friendly flooring construction method for the super-fast curing including a flooring coating step of uniformly applying the environmentally friendly flooring composition is finished on the construction surface is applied primer.