KR20200116314A - Putty and method of construction using the same - Google Patents

Abstract

Disclosed is an organic-inorganic hybrid putty including a main unit, a hardener unit, and a filler unit in a weight ratio of 2 to 3 : 1 : 3 to 4, and a construction method using the same. The present invention improves durability and adhesion.

Description

Organic-inorganic hybrid putty and construction method using it {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, or on the floors of factories, offices, laboratories, hospitals or public buildings. Such epoxy flooring is widely used for the purpose of preventing the floor from being damaged due to 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 may be used to fill in abrasions, cracks, and gaps on the bottom surface of cement or crete.

In particular, recently, cases of using transparent epoxy flooring are increasing, and accordingly, the color of the putty must be the same color as the existing cement or crete flooring, and a flooring material with high strength and high durability is required to shorten the construction period. Has become. In addition, there is a need to develop a putty having high adhesion to both the cement or crete base and the top coat (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 hardener part, and a filler part in a weight ratio of 2 to 3:1:3 to 4, and the main part, based on 100 parts by weight of the total main part, is a bisphenol A type epoxy resin of 50 To 70 parts by weight; 10 to 20 parts by weight of Glycideoxypropyltrimethoxy silane (GPTMS); 0.1 to 0.5 parts by weight of DBTDL; 0.1 to 0.5 parts by weight of inorganic acid; 5 to 20 parts by weight of a BGE (butyl glycidyl ether) reactive diluent; And 0.5 to 3.0 parts by weight of one or more additives selected from a defoaming agent, a dispersant, and a leveling agent, wherein the curing agent part includes 80 to 90 parts by weight of a modified alicyclic amine based on 100 parts by weight of the total curing agent part; And 10 to 20 parts by weight of one or more non-reactive diluents selected from benzyl alcohol and dodecyl phenol, wherein the filler part is one selected from Portland cement, calcium sulfo aluminate cement, blast furnace slag cement, and alumina cement. A copolymer containing the above cements, wherein TEOS (tetraethylorthosilicate) and CTBN (carboxyl terminated butadiene acrylonitrile) are polymerized in a weight ratio of 1: 0.2 to 0.4, 2-HEMA (2-Hydroxyethyl Methacrylate), Metakaolin, and Attapulzy T (Attapulgite, (Mg,Al) ₅ Si ₈ O ₂₀ .4H ₂ O) discloses an organic-inorganic hybrid putty further comprising at least one selected from.

In this embodiment, the main part further includes 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 includes 5 to 10 parts by weight of metakaolin, based on 100 parts by weight of the total filler part. Can include.

In this embodiment, the main part further includes 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 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 hardener part, and a filler part in a weight ratio of 2 to 3:1:3 to 4, and the main part, based on 100 parts by weight of the total main part, is a bisphenol A type epoxy resin of 50 To 70 parts by weight; TEOS and CTBN 1: 10 to 20 parts by weight of a copolymer polymerized in a weight ratio of 0.2 to 0.4; 10 to 20 parts by weight of GPTMS; 2-HEMA 5 to 10 parts by weight; 0.1 to 0.5 parts by weight of DBTDL; 0.1 to 0.5 parts by weight of inorganic acid; 5 to 20 parts by weight of a BGE reactive diluent; And 0.5 to 3.0 parts by weight of one or more additives selected from a defoaming agent, a dispersant, and a leveling agent, wherein the curing agent part includes 80 to 90 parts by weight of a modified alicyclic amine based on 100 parts by weight of the total curing agent part; And 10 to 20 parts by weight of one or more non-reactive diluents selected from benzyl alcohol and dodecyl phenol, wherein the filler part includes, based on 100 parts by weight of the total filler part, Portland cement, calcium sulfoaluminate cement, and blast furnace It discloses 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, the steps of arranging the construction target surface; Applying the organic-inorganic hybrid putty to the 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 the embodiments of the present invention has excellent durability and adhesive strength.

Since the present invention can apply various transformations and have various embodiments, specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. Effects and features of the present invention, and a method of 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 hardener 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 bisphenol A epoxy resin; 10 to 20 parts by weight of Glycideoxypropyltrimethoxy silane (GPTMS); 0.1 to 0.5 parts by weight of DBTDL; 0.1 to 0.5 parts by weight of inorganic acid; 5 to 20 parts by weight of a BGE (butyl glycidyl ether) 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 one or more non-reactive diluents selected from benzyl alcohol and dodecyl phenol.

The filler part includes at least one cement selected from Portland cement, calcium sulfo aluminate cement, blast furnace slag cement, and alumina cement.

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

In addition, the main part, the hardener 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 an epoxy resin, GPTMS, DBTDL, BGE reactive diluent 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 contained in the main part mainly plays a role in forming adhesion and preventing the occurrence of different colors due to putty treatment. In addition, the epoxy resin specifically has an epoxy equivalent of 180 to 220 g/eq, and is in a liquid state. 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, etc. 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 homogeneous mixing is difficult.

GPTMS is used as a coupling agent that forms a chemical bond between the epoxy resin and the filler part, and by including it, the adhesive strength of the putty may be improved. If the content of GPTMS is higher than 20 parts by weight, the price of the product is too high, and if 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 formation of a chemical bond 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 if it is lower than 0.1 to parts by weight, the effect of improving the reaction rate is insufficient.

The BGE reactive diluent is 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, and the workability during construction is not good.

The additive may be one or more selected from antifoaming agents, dispersing agents and leveling agents. If the amount of the additive is less than 0.5 parts by weight, the amount of use is insufficient, so that each function cannot be properly exhibited. If it is more than 3.0 parts by weight, the performance of the putty is rather deteriorated.

A copolymer in which TEOS (tetraethylorthosilicate) and CTBN (carboxyl terminated butadiene acrylonitrile) are polymerized in a weight ratio of 1: 0.2 to 0.4 can improve the overall physical properties of putty such as adhesion and tensile strength. If the content of the copolymer is lower than 10 parts by weight, the effect of improving physical properties is insufficient, and if it is higher than 20 parts by weight, the viscosity of the putty is high, so homogeneous mixing may be difficult.

Since 2-HEMA can improve the interfacial bonding between the epoxy resin and the filler, it can greatly improve the adhesion of the putty, thereby preventing the putty from lifting. In particular, by using GPTMS and 2-HEMA together, the adhesive strength of the putty can be greatly improved. If the content of 2-HEMA is lower than 5 parts by weight, the effect of improving the adhesive strength is insufficient, and if it is higher than 10 parts by weight, the price of putty may increase.

(3) Composition of hardener part

The curing agent portion 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-described 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 is too little or too much, the curing of the epoxy resin is poor, resulting in weak coating film hardness and poor chemical resistance. For example, the modified alicyclic amine may be KH-818B, KH-816, KH-819, KH-825, etc. 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 hydroxy group (-OH), which can shorten the curing time by acting as a catalyst for the epoxy reaction. The non-reactive diluent is used in the range of 10 to 20 parts by weight, and when the amount is small, the viscosity of the curing agent is high and workability is deteriorated.

(4) Structure of filler part

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

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

Metakaolin and attapulgite can each control the viscosity of putty, improve the dispersibility of the cement, and improve watertightness. When the filler part further includes metakaolin, the metakaolin may be used in a range of 5 to 10 parts by weight. When the filler part further includes attapulgite, attapulgite may be used in a range of 1 to 5 parts by weight.

(5) Example of putty composition

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

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; TEOS and CTBN 1: 10 to 20 parts by weight of a copolymer polymerized in a weight ratio of 0.2 to 0.4; 10 to 20 parts by weight of GPTMS; 2-HEMA 5 to 10 parts by weight; 0.1 to 0.5 parts by weight of DBTDL; 0.1 to 0.5 parts by weight of inorganic acid; 5 to 20 parts by weight of a BGE reactive diluent; And 0.5 to 3.0 parts by weight of at least one additive selected from a defoaming agent, a dispersant and a leveling agent; and

The curing agent portion, based on 100 parts by weight of the total curing agent portion, 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; and

The filler part, based on 100 parts by weight of the total filler part, 80 to 90 parts by weight of at least one cement selected from Portland cement, calcium sulfo aluminate cement, blast furnace slag cement, and alumina cement; 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 hardener part, and a filler part in a weight ratio of 2 to 3:1:3 to 4.

In another embodiment, 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; TEOS and CTBN 1: 10 to 20 parts by weight of a copolymer polymerized in a weight ratio of 0.2 to 0.4; 10 to 20 parts by weight of GPTMS; 2-HEMA 5 to 10 parts by weight; 0.1 to 0.5 parts by weight of DBTDL; 0.1 to 0.5 parts by weight of inorganic acid; 5 to 20 parts by weight of a BGE reactive diluent; And 0.5 to 3.0 parts by weight of one or more additives selected from a defoaming agent, a dispersant, and a leveling agent.

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

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

(6) Construction method using putty

Construction method using putty comprises the steps of arranging the surface to be constructed; Applying the above-described putty composition to cracks or grooves; And forming an epoxy coating film.

By using the above putty, even after the epoxy coating film is formed, the dichroic phenomenon may not occur at the area where the putty is applied, and the adhesion between the surface to be constructed (for example, cement or crete surface) and the epoxy coating film is good, so it is lifted. Symptoms may not occur.

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

Experimental Example 1: Test of physical properties of putty

(1) sample preparation

Putty samples were prepared by stirring while sequentially adding each raw material at the mixing 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 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) Experiment method

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

1) Drying time to touch

Touch drying time is a measurement of the time when the coating film is lightly applied to the fingertip at 20℃ and does not come off the finger.

2) Curing drying time

Curing drying time is a measurement of the time when there is no abnormality in the coating film even when the thumb is pressed against the coating film at 90 degrees and twisted.

3) Impact resistance

Impact resistance is measured by applying putty to a steel plate in a thickness of 2mm, drying it at 20±1℃ for 24 hours while maintaining the level with the coated surface up, and dropping a weight with a radius of 6.35±0.03mm above 50cm. After dropping the weight, if the applied surface was cracked or there was no cracked part, it was evaluated as "○", if the cracked part was partially present, "△", and if there was a broken part, "X". .

4) Adhesion strength

The evaluation was conducted based on the method specified in the Korea Land and Housing Corporation's specifications.

5) wear resistance

The evaluation was conducted based on the method specified in the Korea Land and Housing Corporation's specifications.

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Drying time to touch (20℃) 50 minutes 40 minutes 1 hours 1 hours Curing drying time (20℃) 3 hours 3 hours 4 hours 4 hours Impact resistance ○ ○ ○ ○ Adhesion strength (N/㎟) 3.4 2.7 2.8 2.5 Wear 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 the touch drying time and the hardening drying time were slightly shorter in Example 1 and Example 2 to which 2-HEMA was added compared to Comparative Example 1. 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 those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

Claims (4)

It includes a main part, a hardener 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 epoxy resin based on 100 parts by weight of the total main part; 10 to 20 parts by weight of Glycideoxypropyltrimethoxy silane (GPTMS); 0.1 to 0.5 parts by weight of DBTDL; 0.1 to 0.5 parts by weight of inorganic acid; 5 to 20 parts by weight of a BGE (butyl glycidyl ether) reactive diluent; And 0.5 to 3.0 parts by weight of at least one additive selected from a defoaming agent, a dispersant and a leveling agent; and
The curing agent part,
80 to 90 parts by weight of a modified alicyclic amine based on 100 parts by weight of the total curing agent part; And 10 to 20 parts by weight of at least one non-reactive diluent selected from benzyl alcohol and dodecyl phenol; and
The filler part includes at least one cement selected from Portland cement, calcium sulfo aluminate cement, blast furnace slag cement, and alumina cement,
TEOS (tetraethylorthosilicate) and CTBN (carboxyl terminated butadiene acrylonitrile) 1: a copolymer polymerized in a weight ratio of 0.2 to 0.4, 2-HEMA (2-Hydroxyethyl Methacrylate), metakaolin (Metakaolin) and attapulgite (Attapulgite, (Mg ,Al) ₅ Si ₈ O ₂₀ .4H ₂ O), organic-inorganic hybrid putty further comprising at least one selected from. The method of claim 1,
The main part further includes 5 to 10 parts by weight of 2-HEMA, based on 100 parts by weight of the total main part,
The filler part further comprises 5 to 10 parts by weight of metakaolin based on 100 parts by weight of the total filler part, organic-inorganic hybrid putty. The method of claim 1,
The main part further includes 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 based on 100 parts by weight of the total main part,
The filler part further comprises 1 to 5 parts by weight of attapulgite based on 100 parts by weight of the total filler part, organic-inorganic hybrid putty. Arranging the construction target surface;
Applying the organic-inorganic hybrid putty of any one of claims 1 to 3 to the crack or groove; And
A construction method using an organic-inorganic hybrid putty comprising; forming an epoxy coating film.