KR102068100B1 - Composition for coating type floor and paving method using the same - Google Patents

Abstract

The present invention relates to a coating-type flooring composition which is excellent in wear resistance, durability, and weather resistance and comprises: a main agent part; and a curing agent part, wherein the main agent part comprises: a methyl methacrylate resin; a methyl methacrylate monomer; a 2-ethylhexyl acrylate monomer; silica sand; and a waterproofing agent, and the curing agent part comprises: acrylic acid; alkylamine; lithium nitrate; and lignin.

Description

Composition for coating type flooring and floor construction method using the same. {COMPOSITION FOR COATING TYPE FLOOR AND PAVING METHOD USING THE SAME}

The present invention relates to a coating-type flooring composition and a floor construction method using the same, and more particularly, by applying a resin composition containing methyl methacrylate resin to a base, a top coating layer, etc. of the coating-type flooring material, waterproofing and slipping The present invention relates to a coating-type flooring composition having improved wear resistance, durability, and weather resistance.

As shown in FIG. 1, the coating-type flooring material is coated with a surface layer made of ascon or concrete on a base layer, and then a base made of a primer and a primary material is applied thereto, and finally a top coating made of a stencil and a secondary material is applied thereto. It is formed by. Since the coating-type flooring is installed on the floor, it should be excellent in durability and abrasion resistance, and according to the construction environment, properties such as heat shielding property, anti-slip property, and waterproof property are required.

The main material applied to the base layer or the top coating layer of the coating-type flooring material consists of a resin composition. Applicant has developed a packaging material composition to be applied to an anti-slip packaging using a resin composition mainly containing methyl methacrylate (MMA) resin (registered patent 10-2001651). The pavement composition is a composition for non-slip pavement on the surface of the asphalt or concrete formed on the base layer, suitable for installation on roads or sidewalks, such as ramps, child protection zones, or stencil method to use as a coating-type flooring However, the physical properties do not fit because the coloring method should be applied.

Regarding the coating-type flooring using MMA resin, Korean Patent Publication No. 10-1400959 discloses a technique of applying a composition mixed with components such as phytoncide and silica sand on a primer layer using MMA resin as a curing agent, and Korea Korean Patent Publication No. 10-1451325 discloses a technique for forming a polymethyl methacrylate nanocomposite containing MMA and applying the same to a coating type flooring material. In Korean Patent Publication No. 10-1045359, a polymer of MMA and a styrene monomer is disclosed. Disclosed is a method for constructing a coating-type flooring material comprising an acrylic emulsion.

In the prior art, the MMA is mainly used as a means for providing an eco-friendly coating type flooring material. However, there is a limit in improving the waterproofing property and the anti-sliping property required by the coating type flooring material.

In addition, the Republic of Korea Patent Publication Nos. 10-1281120, 10-1226723, etc., but the siliceous waterproofing agents such as fly ash, silica fume, silicate, non-reactive stone powder as a component of the flooring composition, but if a certain amount exceeds the unreacted material This occurs because the physical properties are degraded, there is a problem in that the usage is limited.

Republic of Korea Patent Publication No. 10-1400959 Republic of Korea Patent Registration No. 10-1451325 Republic of Korea Patent Publication No. 10-1045359 Republic of Korea Patent Registration No. 10-1281120 Republic of Korea Patent Registration No. 10-1226723 Republic of Korea Patent Publication No. 10-2001651 Republic of Korea Patent Publication No. 10-1288000

The present invention has been made in view of the prior art as described above, and an object thereof is to provide a coating-type flooring composition having excellent wear resistance, durability and weather resistance, and at the same time improved waterproofing and anti-slip properties.

In addition, an object of the present invention is to provide a method for improving the floor construction efficiency and constructing a floor having excellent physical properties by applying the composition for the coating type flooring to the top coating layer.

The coating-type flooring composition of the present invention for solving the above problems is methyl methacrylate (methyl methacrylate) resin, methyl methacrylate monomer, 2-ethylhexyl acrylate (2-ethylhexyl acrylate) monomer, silica sand and waterproofing agent Characterized in that it comprises a main portion and a curing agent portion containing acrylic acid, alkylamine, lithium nitrate and lignin.

In this case, the waterproofing agent may be a polyhedral oligomeric silicate modified with an alkoxide group.

In addition, the floor construction method of the present invention comprises the steps of forming a primer by applying a primer material on the base layer, applying a base material and installing a stencil on the primer, applying a top coating material, the top coating material Is characterized in that the coating-type flooring composition.

The composition according to the present invention exhibits properties suitable for coating-type flooring construction with improved wear resistance, durability, weather resistance, and at the same time improved waterproofing and anti-slip properties.

In addition, by applying the coating-type flooring composition to the top coating layer it is possible to improve the floor construction efficiency and to construct a floor having excellent physical properties.

1 is a cross-sectional view showing the laminated structure of the coating-type flooring to which the composition of the present invention is applied.
2 is a measurement result of the change in the relative torque value according to the type and content of the waterproofing agent.

Hereinafter, the present invention will be described in more detail. The terms or words used in this specification and claims are not to be construed as being limited to the common or dictionary meanings, and the inventors may appropriately define the concept of terms in order to best describe their invention. It should be interpreted as meanings and concepts corresponding to the technical idea of the present invention based on the principle that the present invention.

Composition for a coating-type flooring according to the present invention is applied to the floor construction, the coating-type flooring is made of a surface layer, a base layer, a top coating layer sequentially stacked on a substrate as shown in Figure 1, The flooring composition is used to form the top coating layer. In addition, the surface layer is generally made of ascon or concrete, the base layer is formed by applying a base powder with or without a primer, it is possible to install a stencil to form a variety of patterns depending on the use of the flooring. In addition, the top coating layer is laminated on the base layer on which the stencil is installed. If necessary, the coating composition may include a colorant such as various dyes and pigments in the coating-type flooring composition, and apply the coating and laminating the flooring.

The coating-type flooring composition should exhibit excellent physical properties while being suitable for such floor construction. Specifically, the composition is a methyl methacrylate (methyl methacrylate) resin, methyl methacrylate monomer, 2-ethylhexyl acrylate (2-ethylhexyl acrylate) monomer, silica sand and the main part including a waterproofing agent and acrylic acid, alkylamine, nitric acid It may be made of a curing agent portion containing lithium and lignin. In addition, when a color should be given, a desired color may be realized by adding a colorant to the main part.

In the composition, the main part is a resin composition including an MMA resin, and includes a methyl methacrylate resin, a methyl methacrylate monomer, and a 2-ethylhexyl acrylate monomer. Specifically, the main part is 10 to 20 parts by weight of methyl methacrylate resin, 20 to 30 parts by weight of methyl methacrylate monomer, 10 to 20 parts by weight of 2-ethylhexyl acrylate monomer, 30 to 50 parts by weight of silica sand and 30 to 30 parts of waterproofing agent. 40 parts by weight, the content range may be selected in consideration of the processability, long-term storage properties of the main portion, the curing rate when mixed with the curing agent, the physical properties. In addition, it may be contained in the range of 10 to 30 parts by weight when adding a dye or a pigment as a colorant.

As the waterproofing agent, it is preferable to use a polyhedral oligomeric silicate modified with an alkoxide group. Korean Patent Publication No. 10-1288000 describes modified polyhedral oligomeric silsesquioxane or polyhedral oligomer silicates exhibiting hydrophobicity, and the modified functional groups include OH, Cl, Br, I, alkoxide (OR), acetate ( OOCR), peroxide (OOR), amine (NR ₂ ) isocyanate (NCO) and the like. Experiments with various silsesquioxanes and silicates showed that the polyhedral oligomer silicates modified with an alkoxide group showed the best results in terms of improving compatibility and waterproofing properties. Examples of the alkoxide group include methoxy, ethoxy and isopropoxy groups. As the alkoxide group-modified polyhedral oligomer silicate, a compound represented by the chemical structure of (RSiO _1.5 ) _n (R (OR) SiO _1.0 ) _m may be used, wherein R may be the same or different from each other. And a chain or branched alkyl group, m and n may each be 1 to 5, and n + m may be 5 to 10. The size of the cage formed by the molecular structure of the silicate may vary according to the values of m and n, and when the size of the cage is too large, the water repellency is deteriorated and when the value of n + m is too small, other components The compatibility with was shown to fall.

In Korean Patent Application Publication No. 10-2001651 filed by the applicant, the mixture of alumina and fluorinated polygonal oligomer silsesquioxane is used as a filler to improve properties such as durability and weather resistance. The fluorinated polygonal oligomeric silsesquioxanes contained fluorine atoms, which showed excellent water repellency but were less compatible than polyhedral oligomeric silicates modified with an alkoxide group when applied to coating-type flooring.

In addition, the silica sand may be used No. 2 or No. 3 to improve the sliding resistance and wear resistance, it is preferable to use the No. 2 and No. 3 mixed in a volume ratio of 1: 1 to 1: 2 to improve the workability. .

In the manufacturing method of the main part, methyl methacrylate and 2-ethylhexyl acrylate are added to the reaction tank and additionally added methyl methacrylate resin while stirring at 70 to 80 ℃, stirred for about 3 hours and then cooled to room temperature, By adding silica sand, waterproofing agent and other additives to the resin mixture can be prepared by stirring for 10 to 30 minutes.

In addition, the curing agent portion includes acrylic acid, alkylamine, lithium nitrate and lignin, specifically, based on 100 parts by weight of acrylic acid in an amount of 1 to 10 parts by weight of alkylamine, 1 to 10 parts by weight of lithium nitrate and 50 to 80 parts by weight of lignin. It is preferable to contain.

The acrylic acid has a pKa of about 4.25 as an acid component. In the case of the alkylamine, pKa of ethylamine is 10.8 and pKa of propylamine is 10.7. Therefore, acrylic acid and a small amount of alkylamine are mixed to generate heat of reaction. It will promote hardening of the main body. Mixing of various acid and base components can achieve this effect, but the experimental results show that the curing performance is excellent when acrylic acid and alkylamine are mixed in an appropriate ratio. Benzoyl peroxide, which is a curing agent used in the prior art, is not suitable because it has the strongest oxidizing power among organic peroxides and is easily exploded and ignited by heating, friction, impact and the like.

In addition, since the lignin contains a hydroxyl group capable of forming a hydrogen bond or a covalent bond and has a large molecular weight, it has been shown that the acid component can be stabilized in a state where acrylic acid and alkylamine are mixed. For this reason, it is possible to maintain a state in which the composition does not react by itself until the floor is constructed. In addition, when the acrylic acid, alkylamine and lignin are mixed in an appropriate ratio, it was found that after the coating is applied to the top coating material, it can be stabilized to exhibit reactivity in the curing process. In addition, the lithium nitrate may serve as a catalyst when the acrylic acid and the alkylamine react as a material for providing lithium ions.

Therefore, the curing agent portion has the effect of increasing the curing rate of the coating film and the surface strength after curing by promoting the binding of the methyl methacrylate resin, methyl methacrylate monomer and 2-ethylhexyl acrylate monomer constituting the main portion .

In order to achieve this effect, the curing agent portion is mixed in the range of 5 to 10 parts by weight with respect to 100 parts by weight of the main portion, it is preferable to use in combination during the floor construction.

In order to confirm that the composition according to the present invention is suitable for use as a coating type flooring, the experiment was carried out while changing the type and content of the waterproofing agent in the process of preparing the main part.

15 parts by weight of methyl methacrylate resin, 20 parts by weight of methyl methacrylate monomer, 10 parts by weight of 2-ethylhexyl acrylate monomer, 40 parts by weight of silica sand (mixed No. 2 and No. 3 in a volume ratio of 1: 1) and a waterproofing agent In the process of preparing a composition comprising 35 parts by weight, the resin component was added to a cone screw mixer, and the pressure generated when the silica sand and the waterproofing agent were added and mixed. The pressure is generated by the shape of the cone screw and the viscosity of the composition, it can be judged that the workability is improved at an appropriate viscosity.

After 70 ± 2% by volume of the composition was introduced into a cone screw mixer having a volume of 48 cm 3, the torque of the motor was measured at 30 second intervals while rotating the cone screw for 30 minutes. Except for the initial 30 seconds, the value (M _c ) when the torque became constant was measured to obtain a relative torque value with respect to the torque value (M _m ) of the motor at idle.

Polyhedral oligomer silicates modified with alkoxide groups used as waterproofing agents (CH ₃ SiO _1.5 ) ₄ (CH ₃ (OCH ₂ CH ₃ ) SiO _1.0 ) ₃ with chemical structural formulas (Experiment 1) and (CH ₃ SiO _1.5 ) ₆ Comparing the chemical structure of (CH ₃ (OCH ₂ CH ₃ ) SiO _1.0 ) ₅ (Experiment 2), (CF ₃ CF ₂ CH ₂ ) ₈ Si ₈ O ₁₂ described in Korean Patent Publication No. 10-2001651 The silsesquioxane containing the alkyl fluoride group (Experiment 3) was evaluated. The result is shown in FIG. At this time, it is understood that the lower the relative torque value (M _c / M _m ), the lower the viscosity of the composition and the higher the processability.

Referring to the results of FIG. 2, in Experiment 1, the relative torque value was shown to be low and stable, and in particular, when using 30 to 40 parts by weight, the relative torque value was found to be the lowest, but the workability was found to be the highest, compared to Experiment 1 in Experiment 2. In general, the relative torque value was high, and Experiment 3 showed a higher relative torque value, indicating that the workability was relatively low.

In order to evaluate the floor construction performance to which the composition of the present invention is applied, the primer layer was installed on the base layer, the base material was applied and the stencil was installed thereon, and then the floor performance was evaluated by applying the composition as a top coating material.

Immediately before application of the top coating material, the main part and the curing agent part were mixed and then applied. The main part and the hardener were mixed by using a high speed stirrer for 2 to 3 minutes to form a composition, and the top coating material was uniformly applied to the coated surface using a spray-type equipment, a special roller, and the like in the construction section. In addition, it was cured through natural curing within 2 hours after construction.

The main part constituting the composition was added 20 parts by weight of methyl methacrylate and 10 parts by weight of 2-ethylhexyl acrylate to the reactor and additionally added 15 parts by weight of methyl methacrylate resin with stirring at 70 to 80 ° C. Stirred. The prepared resin mixture was cooled to room temperature and then introduced into a cone screw mixer, and 40 parts by weight of silica sand and 35 parts by weight of a waterproofing agent were added thereto, followed by stirring for 30 minutes. In this case, the silica sand was used mixed silica sand 1: No. 2 and No. 3 yarn 1: 1, the chemical structural formula of (CH ₃ SiO _1.5 ) ₄ (CH ₃ (OCH ₂ CH ₃ ) SiO _1.0 ) _{3 as} a waterproofing agent. Polyhedral oligomeric silicates modified with an alkoxide group having been used.

In addition, the curing agent was prepared by mixing 0.5 parts by weight of alkylamine, 0.6 parts by weight of lithium nitrate and 6 parts by weight of lignin based on 10 parts by weight of acrylic acid.

For comparison, a composition was prepared in the same manner as in Example, but a silsesquioxane including an alkyl fluoride group of (CF ₃ CF ₂ CH ₂ ) ₈ Si ₈ O ₁₂ was used as a waterproofing agent (Comparative Example 1).

In addition, a composition was prepared in the same manner as in Example, but the curing agent was prepared by combining 5 parts by weight of benzoyl peroxide, 5 parts by weight of dioctylphthalate, and 2 parts by weight of silane coupling agent (Comparative Example 2).

The main part and the hardener part constituting the composition according to Examples and Comparative Examples 1 and 2 were combined at a weight ratio of 10: 0.8, and then applied to the surface of a concrete specimen of 200 × 200 mm in a thickness of 1 to 2 cm for 30 minutes. After curing, a specimen was prepared.

The prepared specimens were placed in a thermo-hygrostat and the physical properties were measured at 700C for 700 hours. In order to measure the accelerated weather resistance, it was measured by the accelerated weather resistance equipment according to KS B 5549, and the wear rate was evaluated under CS-17, 1 kg and 1,000 conditions according to ASTM D 4060. In addition, the Peel test was performed to evaluate the adhesion state of the surface.

As a result, the specimen after 700 hours was found to be excellent in the wear state in the case of the Example 23 mg, but in the case of Comparative Examples 1 and 2 was 38, 49 mg, respectively, the wear state was relatively bad. In addition, even in the attached state, the specimen of the Example was found to be excellent in the adhesion state, but in Comparative Examples 1 and 2 it was found that the partial peeling occurs relatively relatively poor adhesion.

In addition, in order to confirm the anti-slip characteristics, 100 to 150 g / m 2 of primer was applied to the surface of 1 × 1 m of asphalt concrete, and then the compositions of Examples and Comparative Examples 1 and 2 were applied to a thickness of 1 to 2 cm. Slip resistance was evaluated according to KS F 2375. As a result, in Example, Comparative Example 1, and Comparative Example 2, the sliding resistance performance of 78, 76, 72 BPN was shown, respectively, and the favorable result regarding the anti-slip characteristic was obtained.

In addition, as a result of measuring the wear rate by measuring the worn thickness after 6 months with respect to the thickness when the top coating layer formed with the composition of Example and Comparative Example 1 was found to be excellent in durability in the case of Example 3% In Comparative Example 1, however, it was 8%, indicating relatively low durability.

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and those skilled in the art can make various modifications and adaptations within the scope of the claims. It is self-evident.

Claims (3)

A main part including a methyl methacrylate resin, a methyl methacrylate monomer, a 2-ethylhexyl acrylate monomer, silica sand and a waterproofing agent; And
Curing agent part containing acrylic acid, alkylamine, lithium nitrate, and lignin;
A composition for coating film type flooring comprising a.
The method according to claim 1,
The waterproofing agent is a coating-type flooring composition, characterized in that the polyhedral oligomer silicate modified with an alkoxide group.
Applying a primer to the base layer to form a primer;
Applying a base material on the primer and installing a stencil;
Applying a top coating material;
Including;
The top coating material is a floor construction method, characterized in that the coating-type flooring composition according to claim 1.

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