KR102259894B1 - Putty and method of construction using the same - Google Patents

Abstract

Disclosed are an organic-inorganic hybrid putty comprising a main part, a curing agent part, and a filler part in a weight ratio of 2 to 3:1:3 to 4, and a construction method using the same.

Description

Organic-inorganic hybrid putty and construction method using the same {Putty and method of construction using the same}

Embodiments of the present invention relate to an organic-inorganic hybrid putty and a construction method using the same, and more particularly, to an organic-inorganic hybrid putty having improved durability and adhesive strength, and a construction method using the same.

In general, epoxy flooring is installed on the floor of parking lots such as apartments, hotels, officetels, and large discount stores, factories, offices, laboratories, hospitals, and public buildings. Such an epoxy flooring material is widely used for the purpose of preventing the floor from being damaged by the movement of vehicles or pedestrians and further preventing the generation of dust from the floor.

In addition, putty is a paste-like bonding agent, and can be used to fill the suction, cracks, and gaps of the cement or crete bottom surface.

In particular, the use of transparent epoxy flooring is increasing recently. Accordingly, the color of the putty must be the same as that of the existing cement or crete floor. In order to shorten the construction period, a flooring material with high strength and high durability is required. is becoming In addition, there is a demand for the development of a putty having high adhesion to both the cement or crete substrate and the top coating material (eg, epoxy).

Embodiments of the present invention provide an organic-inorganic hybrid putty with improved durability and adhesion and a construction method using the same.

An embodiment of the present invention includes a main part, a curing agent part, and a filler part in a weight ratio of 2 to 3:1:3 to 4, wherein the main part contains 50 parts by weight of a bisphenol A epoxy resin based on 100 parts by weight of the total main part. to 70 parts by weight; 10 to 20 parts by weight of Glycideoxypropyltrimethoxy silane (GPTMS); DBTDL 0.1 to 0.5 parts by weight; 0.1 to 0.5 parts by weight of an inorganic acid; 5 to 20 parts by weight of a butyl glycidyl ether (BGE) reactive diluent; and 0.5 to 3.0 parts by weight of one or more additives selected from antifoaming agents, dispersing agents and leveling agents, wherein the curing agent part includes, based on 100 parts by weight of the total curing agent part, 80 to 90 parts by weight of a modified alicyclic amine; and 10 to 20 parts by weight of at least one non-reactive diluent selected from benzyl alcohol and dodecyl phenol, wherein the filler part is selected from Portland cement, calcium sulfoaluminate cement, blast furnace slag cement, and alumina cement. A copolymer containing the above cement, in which TEOS (Tetraethylorthosilicate) and CTBN (carboxyl terminated butadiene acrylonitrile) are polymerized in a weight ratio of 1: 0.2 to 0.4, 2-Hydroxyethyl Methacrylate (2-HEMA), metakaolin (Metakaolin), and attapulgai bit (Attapulgite, (Mg, Al) 5 Si 8 O 20 .4H 2 O) discloses, organic-inorganic hybrid putty further comprises at least one member selected from.

In this embodiment, the main part further comprises 5 to 10 parts by weight of 2-HEMA based on 100 parts by weight of the total main part, and the filler part further comprises 5 to 10 parts by weight of metakaolin based on 100 parts by weight of the total filler part. may include

In this embodiment, the main part further comprises 10 to 20 parts by weight of a copolymer obtained by polymerization of TEOS and CTBN in a weight ratio of 1: 0.2 to 0.4, based on 100 parts by weight of the total main part, and the filler part is 100 parts by weight of the total filler part. Based on parts by weight, 1 to 5 parts by weight of attapulgite may be further included.

Another embodiment of the present invention includes a main part, a curing agent part, and a filler part in a weight ratio of 2 to 3:1:3 to 4, wherein the main part comprises 50 parts by weight of a bisphenol A epoxy resin based on 100 parts by weight of the total main part. to 70 parts by weight; 10 to 20 parts by weight of a copolymer in which TEOS and CTBN are polymerized in a weight ratio of 1: 0.2 to 0.4; GPTMS 10 to 20 parts by weight; 2-HEMA 5 to 10 parts by weight; DBTDL 0.1 to 0.5 parts by weight; 0.1 to 0.5 parts by weight of an inorganic acid; 5 to 20 parts by weight of BGE reactive diluent; and 0.5 to 3.0 parts by weight of one or more additives selected from antifoaming agents, dispersing agents and leveling agents, wherein the curing agent part includes, based on 100 parts by weight of the total curing agent part, 80 to 90 parts by weight of a modified alicyclic amine; and 10 to 20 parts by weight of at least one non-reactive diluent selected from benzyl alcohol and dodecyl phenol, wherein the filler part is, based on 100 parts by weight of the total filler part, Portland cement, calcium sulfoaluminate cement, blast furnace Disclosed is an organic-inorganic hybrid putty comprising 80 to 90 parts by weight of at least one cement selected from slag cement and alumina cement, 5 to 10 parts by weight of metakaolin, and 1 to 5 parts by weight of attapulgite.

Another embodiment of the present invention comprises the steps of cleaning the construction target surface; applying the organic-inorganic hybrid putty described above to cracks or grooves; and forming an epoxy coating film; discloses a construction method using an organic-inorganic hybrid putty comprising.

The organic-inorganic hybrid putty according to embodiments of the present invention has excellent durability and adhesive strength.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. Effects and features of the present invention, and a method for achieving them will become apparent with reference to the embodiments described below. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms.

(1) Composition of putty composition

The putty of the present invention includes a main part, a curing agent part and a filler part.

The main part, based on 100 parts by weight of the total main part, 50 to 70 parts by weight of a bisphenol A epoxy resin; 10 to 20 parts by weight of Glycideoxypropyltrimethoxy silane (GPTMS); DBTDL 0.1 to 0.5 parts by weight; 0.1 to 0.5 parts by weight of an inorganic acid; 5 to 20 parts by weight of a butyl glycidyl ether (BGE) reactive diluent; and 0.5 to 3.0 parts by weight of at least one additive selected from an antifoaming agent, a dispersing agent, and a leveling agent.

The curing agent part, based on 100 parts by weight of the total curing agent part, 80 to 90 parts by weight of a modified alicyclic amine; and 10 to 20 parts by weight of at least one non-reactive diluent selected from benzyl alcohol and dodecyl phenol.

The filler part includes at least one cement selected from portland cement, calcium sulfoaluminate cement, blast furnace slag cement, and alumina cement.

The putty is a copolymer in which Tetraethylorthosilicate (TEOS) and carboxyl terminated butadiene acrylonitrile (CTBN) are polymerized in a weight ratio of 1: 0.2 to 0.4, 2-Hydroxyethyl Methacrylate (2-HEMA), Metakaolin, and Attapulgite , (Mg,Al) ₅ Si ₈ O ₂₀ .4H ₂ O) necessarily further includes at least one selected from the group consisting of.

In addition, the main part, the curing agent part, and the filler part of the putty are included in a weight ratio of 2 to 3:1:3 to 4.

(2) Composition of the subject part

The main part may include epoxy resin, GPTMS, DBTDL, BGE reactive diluents and additives. Meanwhile, the main part may further include a copolymer and/or 2-HEMA in which TEOS and CTBN are polymerized in a weight ratio of 1: 0.2 to 0.4.

The epoxy resin included in the main part mainly plays a role in forming adhesion and preventing the occurrence of discoloration due to the putty treatment. In addition, the epoxy resin specifically has an epoxy equivalent of 180 to 220 g/eq, and is liquid. For example, specific examples of the epoxy resin include YD-114, YD-115, YD-117, YD-119, YD-128, YD-129, YDF-162, YDF-165, YDF-170, and the like. It is not limiting. If the content of the epoxy resin is higher than 70 parts by weight, the viscosity of the putty is high, so that homogeneous mixing is difficult, and if it is lower than 50 parts by weight, adhesion is poor.

GPTMS is used as a coupling agent for forming a chemical bond between the epoxy resin and the filler, and by including it, the adhesive strength of the putty can be improved. When the content of GPTMS is higher than 20 parts by weight, the price of the product is too high, and when it is lower than 10 parts by weight, the effect of improving the adhesive strength is insufficient.

DBTDL and inorganic acid may increase the reactivity of the alkoxy group of GPTMS to improve the rate of chemical bond formation between the epoxy resin and the filler part. For example, the inorganic acid may be selected from hydrochloric acid, nitric acid, phosphoric acid, and sulfuric acid, but is not limited thereto. Even if the content of each of DBTDL and inorganic acid is higher than 0.5 parts by weight, the reactivity is not further improved, and when it is lower than 0.1 parts by weight, the effect of improving the reaction rate is insignificant.

BGE reactive diluents are used to improve the strength of the final cured product while lowering the viscosity of the putty. If the content of the BGE reactive diluent is higher than 20 parts by weight, the physical properties of the final cured product are rather deteriorated, and if it is lower than 5 parts by weight, the effect of lowering the viscosity is insufficient, so that the workability during construction is not good.

The additive may be at least one selected from an antifoaming agent, a dispersing agent, and a leveling agent. If the content of the additive is less than 0.5 parts by weight, the amount used is insufficient, so that each function cannot be properly exhibited, and if it is more than 3.0 parts by weight, the performance of the putty is rather deteriorated.

The copolymer obtained by polymerizing Tetraethylorthosilicate (TEOS) and carboxyl terminated butadiene acrylonitrile (CTBN) in a weight ratio of 1: 0.2 to 0.4 can improve overall physical properties of the putty, such as adhesion and tensile strength. When the content of the copolymer is lower than 10 parts by weight, the effect of improving physical properties is insignificant, and when it is higher than 20 parts by weight, the viscosity of the putty is high, and homogeneous mixing may be difficult.

Since 2-HEMA can improve the interfacial bonding force between the epoxy resin and the filler part, it can greatly improve the adhesiveness of the putty, thereby preventing the putty from floating. In particular, by using GPTMS and 2-HEMA together, the adhesive strength of the putty can be greatly improved. When the content of 2-HEMA is lower than 5 parts by weight, the effect of improving the adhesive strength is insignificant, and when it is higher than 10 parts by weight, the price of the putty may increase.

(3) Configuration of curing agent part

The curing agent part may include a modified alicyclic amine and a non-reactive diluent.

The modified alicyclic amine may have a total amine value (TAV) in the range of 220 to 330. When a modified alicyclic amine satisfying the above-mentioned range is used, a putty having a high curing rate and high strength can be provided. The modified alicyclic amine is used in the range of 80 to 90 parts by weight, and if the amount used is too small or too large, curing of the epoxy resin is poor, so that the coating film hardness is weak and chemical resistance is deteriorated. For example, the modified alicyclic amine may be KH-818B, KH-816, KH-819 and KH-825 of Kukdo Chemical, but is not limited thereto.

The non-reactive diluent may be at least one selected from benzyl alcohol and dodecyl phenol. The non-reactive diluent contains a hydroxyl group (-OH), which can serve as a catalyst for the epoxy reaction and shorten the curing time. The non-reactive diluent is used in the range of 10 to 20 parts by weight, and when the amount used is small, the viscosity of the curing agent is high and workability is deteriorated.

(4) Configuration of the pillar part

The filler part may include cement. Meanwhile, the filler may further include metakaolin and/or attapulgite.

The cement may be at least one selected from portland cement, calcium sulfoaluminate cement, blast furnace slag cement, and alumina cement. When the filler part further includes metakaolin and/or attapulgite, the cement may be used in an amount of 80 to 90 parts by weight.

Metakaolin and attapulgite may adjust the viscosity of putty, improve dispersibility of the cement, and improve watertightness, respectively. When the filler part further includes meta-kaolin, meta-kaolin may be used in an amount of 5 to 10 parts by weight. When the filler part further includes attapulgite, the attapulgite may be used in an amount of 1 to 5 parts by weight.

(5) Example of putty composition

In one embodiment, the putty of the present invention includes a main part, a curing agent part, and a filler part in a weight ratio of 2 to 3:1:3 to 4,

The main part, 50 to 70 parts by weight of a bisphenol A type epoxy resin, based on 100 parts by weight of the total main part; 10 to 20 parts by weight of a copolymer in which TEOS and CTBN are polymerized in a weight ratio of 1: 0.2 to 0.4; GPTMS 10 to 20 parts by weight; 2-HEMA 5 to 10 parts by weight; DBTDL 0.1 to 0.5 parts by weight; 0.1 to 0.5 parts by weight of an inorganic acid; 5 to 20 parts by weight of BGE reactive diluent; and 0.5 to 3.0 parts by weight of at least one additive selected from an antifoaming agent, a dispersing agent, and a leveling agent;

The curing agent part, based on 100 parts by weight of the total curing agent part, 80 to 90 parts by weight of a modified alicyclic amine; and 10 to 20 parts by weight of at least one non-reactive diluent selected from benzyl alcohol and dodecyl phenol;

The filler part may include 80 to 90 parts by weight of at least one cement selected from Portland cement, calcium sulfoaluminate cement, blast furnace slag cement and alumina cement, based on 100 parts by weight of the total filler part; 5 to 10 parts by weight of metakaolin; and 1 to 5 parts by weight of attapulgite, but is not limited thereto.

In another embodiment, the putty of the present invention may be composed of a main part, a curing agent part, and a filler part in a weight ratio of 2 to 3:1:3 to 4.

In another embodiment, the main part, 50 to 70 parts by weight of a bisphenol A type epoxy resin, based on 100 parts by weight of the total main part; 10 to 20 parts by weight of a copolymer in which TEOS and CTBN are polymerized in a weight ratio of 1: 0.2 to 0.4; GPTMS 10 to 20 parts by weight; 2-HEMA 5 to 10 parts by weight; DBTDL 0.1 to 0.5 parts by weight; 0.1 to 0.5 parts by weight of an inorganic acid; 5 to 20 parts by weight of BGE reactive diluent; and 0.5 to 3.0 parts by weight of at least one additive selected from an antifoaming agent, a dispersing agent, and a leveling agent.

In another embodiment, the curing agent part, based on 100 parts by weight of the total curing agent part, 80 to 90 parts by weight of a modified alicyclic amine; and 10 to 20 parts by weight of at least one non-reactive diluent selected from benzyl alcohol and dodecyl phenol.

In another embodiment, the filler part, 80 to 90 parts by weight of at least one cement selected from portland cement, calcium sulfoaluminate cement, blast furnace slag cement and alumina cement, based on 100 parts by weight of the total filler part; 5 to 10 parts by weight of metakaolin; and 1 to 5 parts by weight of attapulgite.

(6) Construction method using putty

The construction method using putty comprises the steps of arranging the construction target surface; applying the above-described putty composition to the cracks or grooves; and forming an epoxy coating film.

By using the above-mentioned putty, even after the epoxy coating film is formed, a dichroism phenomenon may not occur in the area where the putty is applied, and the adhesion between the construction target surface (for example, cement or crete surface) and the epoxy coating film is good, so it floats phenomenon may not occur.

The construction method may further include applying a primer between the arranging step and the step of applying the putty. The primer may include an epoxy resin and an organic solvent.

Experimental Example 1: Physical property test of putty

(1) Sample preparation

Putty samples were prepared by stirring while adding each raw material in order at the compounding ratio (% by weight) shown in Table 1 below.

division Raw material Example 1 Example 2 Example 3 Comparative Example 1 subject part YD-114 60 60 60 60 TEOS-CTBN copolymer 15 - 10 - GPTMS 10 20 20 30 2-HEMA 5 10 - - DBTDL 0.3 0.3 0.3 0.3 nitric acid 0.2 0.2 0.2 0.2 BGE 9.0 9.0 9.0 9.0 antifoam 0.5 0.5 0.5 0.5 sub Total 100.0 100.0 100.0 100.0 hardener part KH-818B 80 80 80 80 benzyl alcohol 20 20 20 20 sub Total 100 100 100 100 filler part Calcium sulfoaluminate cement 60 70 70 70 Blast Furnace Slag Cement 25 20 20 30 metakaolin 10 10 - - attapulgite 5 - 10 - sub Total 100 100 100 100 Main part: Hardener part: Filler part (weight ratio) 2:1:3 2:1:3 2:1:3 2:1:3

(2) Experimental method

The following physical property tests were performed on the putties of Examples 1 to 3 and Comparative Example 1. The results are shown in Table 2.

1) Dry to touch time

Dry to touch time is measured when the coating film does not stick to the finger when lightly applied to the fingertip at 20°C.

2) curing drying time

The curing-drying time is a measure of the time when there is no abnormality in the coating film even if the thumb is pressed and twisted at 20 ° C.

3) Impact resistance

Impact resistance is measured by applying putty to a steel plate with a thickness of 2 mm, drying it at 20 ± 1 °C for 24 hours while maintaining the horizontal with the coated surface facing up, and then dropping a weight of 6.35 ± 0.03 mm from 50 cm above. After dropping the weight, it was evaluated by dividing the application surface by “○” if there was no cracked or cracked part, “△” if there was partially cracked part, and “×” if there was a broken part. .

4) Adhesive strength

The evaluation was performed according to the method stipulated in the specialized specifications of the Korea Land and Housing Corporation.

5) Wear resistance

The evaluation was performed according to the method stipulated in the specialized specifications of the Korea Land and Housing Corporation.

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Dry to touch time (20℃) 50 minutes 40 minutes 1 hours 1 hours Curing drying time (20℃) 3 hours 3 hours 4 hours 4 hours impact resistance ○ ○ ○ ○ Adhesive strength (N/㎟) 3.4 2.7 2.8 2.5 Abrasion resistance (mg) 65 93 87 110

As can be seen in Table 2, Examples 1 to 3 showed at least the same or better results in all items compared to Comparative Example 1.

More specifically, it was confirmed that Examples 1 and 2 to which 2-HEMA was added were slightly shorter than Comparative Example 1 in terms of dry to touch and curing drying times. The adhesion strength was significantly improved in Example 1, and it was confirmed that Examples 2 and 3 were also superior to Comparative Example 1. In addition, it was confirmed that the abrasion resistance was also significantly improved in Examples 1 to 3 compared to Comparative Example 1.

The above description is merely illustrative of the technical idea of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

Claims (4)

2 to 3:1: including a main part, a curing agent part, and a filler part in a weight ratio of 3 to 4,
The subject part is
Based on 100 parts by weight of the total main part, 50 to 70 parts by weight of a bisphenol A-type epoxy resin; 10 to 20 parts by weight of Glycideoxypropyltrimethoxy silane (GPTMS); DBTDL 0.1 to 0.5 parts by weight; 0.1 to 0.5 parts by weight of an inorganic acid; 5 to 20 parts by weight of a butyl glycidyl ether (BGE) reactive diluent; 0.5 to 3.0 parts by weight of at least one additive selected from an antifoaming agent, a dispersing agent and a leveling agent; And 10 to 20 parts by weight of a copolymer in which TEOS and CTBN are polymerized in a weight ratio of 0.2 to 0.4,
The curing agent part,
Based on 100 parts by weight of the total curing agent, 80 to 90 parts by weight of a modified alicyclic amine; and 10 to 20 parts by weight of at least one non-reactive diluent selected from benzyl alcohol and dodecyl phenol;
The filler part may include at least one cement selected from portland cement, calcium sulfoaluminate cement, blast furnace slag cement, and alumina cement; and 1 to 5 parts by weight of attapulgite, based on 100 parts by weight of the total filler part, organic-inorganic hybrid putty. According to claim 1,
The main part further comprises 5 to 10 parts by weight of 2-HEMA based on 100 parts by weight of the total main part,
The filler portion, based on 100 parts by weight of the total filler portion, further comprising 5 to 10 parts by weight of metakaolin, organic-inorganic hybrid putty. delete cleaning the construction target surface;
Applying the organic-inorganic hybrid putty of any one of claims 1 or 2 to cracks or grooves; and
A construction method using an organic-inorganic hybrid putty comprising; forming an epoxy coating film.