KR102421138B1 - high elasticity nano putty - Google Patents

Abstract

The present invention provides a putty composition including 100 parts by weight of an acrylate resin; 75-100 parts by weight of a filler; 25-35 parts by weight of an inorganic antibacterial agent; 1-3 parts by weight of an organic antibacterial agent; 1-3 parts by weight of a dispersant; 2-4 parts by weight of an anti-freezing agent; 2-4 parts by weight of a plasticizer; 20-30 parts by weight of a wetting agent; 35-45 parts by weight of an antifoaming agent; 10-20 parts by weight of a thickening agent; and 1-3 parts by weight of a thickening stabilizer.

Description

high elasticity nano putty

The present invention relates to high elasticity nano putty.

In general, reinforced concrete structures, which account for most of the construction structures, deteriorate with age, and cracks and peelings and peelings due to contraction and expansion due to temperature changes in the domestic environment with four distinct seasons, and buildings adjacent to the coast are unpredictable. As salt penetrates into the concrete, the passivation film formed on the rebar is lost (destroyed), causing corrosion of the reinforcing bar. do. At this time, rebar corrosion causes volume expansion of reinforcing bars, and as the durability of the building deteriorates due to cracks and cross-sections of concrete, maintenance and reinforcement must be carried out periodically.

Concrete is a discontinuous, anisotropic, and inhomogeneous hardening body composed of a mixture of cement, aggregate, water and other admixture materials, and its physical and chemical properties are very diverse and complex. Such concrete has many voids or microcracks from the manufacturing stage due to hydration reaction, bleeding, heat of hydration, plastic shrinkage, and different properties of materials. When concrete is hardened, microcracks generated during the manufacturing stage due to various factors such as drying shrinkage, thermal stress and external load grow into cracks.

These cracks in concrete are caused by various factors and have various effects on the structure. Cracks can be classified into cracks due to concrete material factors, cracks due to design errors, cracks due to poor construction, and cracks due to load action. It affects the watertightness and airtightness, and the aesthetics.

Cracks occurring in a concrete structure significantly degrade the performance of concrete when severe, and further lose its role as a structure, shortening its lifespan. In addition, since it is the main cause of lowering all functions such as strength, durability, and waterproofness of the structure and can cause serious problems in the safety and usability of the structure, it is natural that it should not be neglected as a microcrack that does not directly affect the durability of the structure. will be.

Recently, the domestic construction environment is changing to maintenance and reinforcement for maintenance and performance improvement of existing facilities rather than new investment. Interest has been on the rise recently. However, in Korea, the development of repair materials and construction methods for repair and reinforcement of concrete structures is very insufficient compared to those in advanced countries. Not only is it in an increasing state, but also materials and methods for repair and reinforcement that combine cutting-edge fields such as ET, IT and mechatronics technology that are being developed recently have not been achieved at all.

Patent Literature 1: Republic of Korea Patent 10-1698187

The present invention has been devised to solve the above problems, and an object of the present invention is to provide a putty composition that exhibits excellent antibacterial properties and high elasticity properties.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the present invention provides 100 parts by weight of an acrylate-based resin, 75-100 parts by weight of a filler, 25-35 parts by weight of an inorganic antibacterial agent, 1-3 parts by weight of an organic antibacterial agent, 1-3 parts by weight of a dispersant, and 2 parts by weight of an anti-freezing agent. Provided is a putty composition comprising -4 parts by weight, 2-4 parts by weight of a plasticizer, 20-30 parts by weight of a wetting agent, 35-45 parts by weight of an antifoaming agent, 10-20 parts by weight of a thickener, and 1-3 parts by weight of a thickening stabilizer.

In addition, the acrylate-based resin is an acrylate-based copolymer comprising 35-45 wt% of a methyl methacrylate monomer unit, 35-45 wt% of an ethyl acrylate monomer unit, and 15-25 wt% of a glycidyl methacrylate monomer unit. and a mixture of polyurethane acrylate having a weight average molecular weight of 15,000-20,000 in a ratio (weight ratio) of 60-70:30-40.

In addition, the filler is characterized in that it consists of a mixture of carbon fibers having an average length of 500-600 nm, magnesium hydroxide-supported zeolite having a particle size of 150-200 nm, lithium silicate and calcium carbonate.

In addition, the inorganic antibacterial agent is characterized in that the particle size is 20-30 nm of silver nanoparticles and the particle size is 20-30 nm zinc oxide nanoparticles.

In addition, the organic antibacterial agent is characterized in that oxydiphenoxarsine (10,10'-oxydiphenoxarsine, OBPA).

In addition, the dispersant is characterized in that the ammonium polyacrylate.

In addition, the cryoprotectant is characterized in that propylene glycol.

In addition, the plasticizer is characterized in that the epoxidized soybean oil.

In addition, the wetting agent is characterized in that the polyether-modified polydimethylsiloxane.

In addition, the antifoaming agent is characterized in that the polysiloxane emulsion.

In addition, the thickener is characterized in that hydroxyethyl cellulose.

In addition, the thickening stabilizer is characterized in that sodium polyacrylate.

In addition, the putty composition comprises 100 parts by weight of the acrylate-based resin, 100 parts by weight of filler, 30 parts by weight of inorganic antibacterial agent, 2 parts by weight of organic antibacterial agent, 2 parts by weight of dispersant, 3 parts by weight of antifreezing agent, 3 parts by weight of plasticizer, 25 parts by weight of wetting agent. It consists of parts by weight, 40 parts by weight of the antifoaming agent, 15 parts by weight of the thickener and 2 parts by weight of the thickening stabilizer, and is characterized in that the elongation at break is 800-1,000 N/mm.

In addition, the present invention by adding a catalyst to 35-45% by weight of methyl methacrylate monomer, 35-45% by weight of ethyl acrylate monomer, and 15-25% by weight of glycidyl methacrylate monomer at a temperature of 80-90 ℃ An acrylate-based copolymer is prepared by reacting, and the prepared acrylate-based copolymer and a polyurethane acrylate having a weight average molecular weight of 15,000-20,000 are mixed in a ratio (weight ratio) of 60-70:30-40. preparing a resin; 10-20 wt% of carbon fiber having an average length of 500-600 nm, 20-30 wt% of zeolite having a particle size of 150-200 nm supported with magnesium hydroxide, 15-25 wt% of lithium silicate and 35-45 wt% of calcium carbonate % to prepare a filler; and 100 parts by weight of the acrylate-based resin prepared above, 75-100 parts by weight of the filler, 15-25 parts by weight of silver nanoparticles having a particle size of 20-30 nm, and zinc oxide nanoparticles having a particle size of 20-30 nm. 5-15 parts by weight, 1-3 parts by weight of oxydiphenoxarsine (10,10'-oxydiphenoxarsine, OBPA), 1-3 parts by weight of ammonium polyacrylate, 2-4 parts by weight of propylene glycol, epoxidized soybean oil 2- 4 parts by weight, 20-30 parts by weight of polyether-modified polydimethylsiloxane, 35-45 parts by weight of polysiloxane emulsion, 10-20 parts by weight of hydroxyethyl cellulose, and 1-3 parts by weight of sodium polyacrylate 2000 at a temperature of 40-50°C It provides a method for producing a putty composition comprising; preparing a putty composition by stirring at a rotation speed of rpm for 30-60 minutes.

The putty composition according to the present invention exhibits high elasticity as well as excellent antibacterial properties. It can be used as a high-elasticity film repair material that doubles as a sealing for the purpose of preventing progressive cracking due to temperature change and vibration, etc., and the dried film exhibits high elasticity and can safely protect the building without cracks or changes in the physical properties of the film even in a sudden temperature change. In addition, it has excellent water resistance, alkali resistance, antibacterial properties and adhesion properties.

1 shows a flowchart of a method for preparing a putty composition according to an embodiment of the present invention.

Hereinafter, various embodiments will be described in more detail with reference to the accompanying drawings. The embodiments described herein may be variously modified. Certain embodiments may be depicted in the drawings and described in detail in the detailed description. However, specific embodiments disclosed in the accompanying drawings are only provided to facilitate understanding of various embodiments. Therefore, the technical spirit is not limited by the specific embodiments disclosed in the accompanying drawings, and it should be understood to include all equivalents or substitutes included in the spirit and scope of the invention.

Terms including ordinal numbers such as first, second, first, second, etc. may be used to describe various elements, but these elements are not limited by the above-described terms. The above terminology is used only for the purpose of distinguishing one component from another component.

In this specification, terms such as 'comprising' or 'having' are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It is to be understood that this does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof. When it is said that an element is 'connected' or 'connected' to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in between. it should be On the other hand, when it is mentioned that a certain element is 'directly connected' or 'directly connected' to another element, it should be understood that the other element does not exist in the middle.

In addition, in describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be abbreviated or omitted.

The present invention provides 100 parts by weight of an acrylate-based resin, 75-100 parts by weight of a filler, 25-35 parts by weight of an inorganic antibacterial agent, 1-3 parts by weight of an organic antibacterial agent, 1-3 parts by weight of a dispersant, 2-4 parts by weight of a cryoprotectant, and a plasticizer. Provided is a putty composition comprising 2-4 parts by weight, 20-30 parts by weight of a wetting agent, 35-45 parts by weight of an antifoaming agent, 10-20 parts by weight of a thickener, and 1-3 parts by weight of a thickening stabilizer.

The putty composition according to the present invention exhibits high elasticity as well as excellent antibacterial properties. It can be used as a high-elasticity film repair material that doubles as a sealing for the purpose of preventing progressive cracking due to temperature change and vibration, etc., and the dried film exhibits high elasticity and can safely protect the building without cracks or changes in the physical properties of the film even in a sudden temperature change. In addition, it has excellent water resistance, alkali resistance, antibacterial properties and adhesion properties.

The acrylate-based resin is an acrylate-based copolymer comprising 35-45 wt% of a methyl methacrylate monomer unit, 35-45 wt% of an ethyl acrylate monomer unit, and 15-25 wt% of a glycidyl methacrylate monomer unit, and the weight It is preferable to use a mixture of polyurethane acrylate having an average molecular weight of 15,000-20,000 in a ratio (weight ratio) of 60-70:30-40. More preferably, the acrylate-based resin is an acrylate-based copolymer comprising 40% by weight of a methyl methacrylate monomer unit, 40% by weight of an ethyl acrylate monomer unit, and 20% by weight of a glycidyl methacrylate monomer unit, and a weight average A mixture of polyurethane acrylate having a molecular weight of 15,000-20,000 in a ratio (weight ratio) of 65:35 may be used. By applying the acrylate-based resin, excellent adhesion is exhibited, and the dried coating film can exhibit excellent water resistance and high elasticity.

As the filler, it is preferable to use a mixture of carbon fibers having an average length of 500-600 nm, zeolite having a particle size of 150-200 nm supported with magnesium hydroxide, lithium silicate and calcium carbonate. High elasticity can be obtained by applying carbon fibers with an average length of 500-600 nm. In addition, by applying a zeolite supported with magnesium hydroxide and having a particle size of 150-200 nm, adhesion and durability are improved as well as excellent water resistance. Here, the advantage of excellent plastic deformation resistance is shown. In addition, elasticity can be imparted to the dried coating film by applying lithium silicate and calcium carbonate.

The inorganic antimicrobial agent is preferably silver nanoparticles having a particle size of 20-30 nm and zinc oxide nanoparticles having a particle size of 20-30 nm. Silver nanoparticles have excellent antibacterial properties as they have the effect of sterilizing more than 99.99% of bacteria and bacteria or inhibiting the production itself. Zinc oxide nanoparticles are substances that decompose various bacteria and pollutants by catalyzing catalytic reactions (oxidation and reduction reactions) using sunlight as an energy source. Zinc oxide inhibits the metabolism of viruses or bacteria, and a mechanism to kill it and remove it can also be performed. The zinc oxide nanoparticles have a surface effect not provided by bulk materials due to an increase in specific surface area, and when the dried coating film comes into contact with moisture in the air, the zinc metal component of the zinc oxide present on the surface is ionized and eluted while bacteria It acts as an antibacterial agent against harmful bacteria such as

The organic antibacterial agent is preferably oxydiphenoxarsine (10,10'-oxydiphenoxarsine, OBPA). By applying both an inorganic antibacterial agent and an organic antibacterial agent to the putty composition, it does not reduce the overall physical properties such as impact resistance and thermal stability of the acrylate-based resin-based putty composition itself, and improves antimicrobial and antibacterial durability against bacteria as well as mold can do it

The dispersant is preferably ammonium polyacrylate. By using ammonium polyacrylate as a dispersant, aggregation of the powder is suppressed and uniformly dispersed to impart uniform properties to the coating film.

It is preferable to use propylene glycol as the antifreeze agent. By applying propylene glycol as the antifreeze agent, the putty composition does not freeze and can maintain proper physical properties.

The plasticizer is preferably epoxidized soybean oil. By using the epoxidized soybean oil, flexibility is imparted to the coating film made of the putty composition and adhesion is improved.

The wetting agent is preferably polyether-modified polydimethylsiloxane. By using polyether-modified polydimethylsiloxane as the wetting agent and having an affinity group with the acrylate-based resin, it is possible to help disperse the resin and prevent re-agglomeration.

The antifoaming agent is preferably a polysiloxane emulsion. By using the polysiloxane emulsion as the antifoaming agent, it is preferable to form an even coating film by suppressing air bubbles in the putty composition, and the remaining air bubbles are removed so that the coating film formation is excellent.

It is preferable to use hydroxyethyl cellulose as the thickener. By using hydroxyethyl cellulose as the thickener, the viscosity of the putty composition can be adjusted, and the loss of a coating film using the putty composition can be improved.

It is preferable to use sodium polyacrylate as the thickening stabilizer.

In this case, the putty composition comprises 100 parts by weight of the acrylate-based resin, 100 parts by weight of the filler, 30 parts by weight of the inorganic antibacterial agent, 2 parts by weight of the organic antibacterial agent, 2 parts by weight of the dispersant, 3 parts by weight of the antifreeze agent, 3 parts by weight of the plasticizer, 25 parts by weight of the wetting agent. It consists of parts by weight, 40 parts by weight of an antifoaming agent, 15 parts by weight of a thickener and 2 parts by weight of a thickening stabilizer, and it is preferable that the elongation at break is 800-1,000 N/mm. By having the composition as described above, the elongation at break of 800-1,000 N/mm may exhibit high elasticity, and excellent antibacterial properties may be exhibited. In addition, it is excellent in water resistance, alkali resistance, adhesion, and the like.

In addition, the present invention is by adding a catalyst to 35-45 wt% of methyl methacrylate monomer, 35-45 wt% of ethyl acrylate monomer and 15-25 wt% of glycidyl methacrylate monomer at a temperature of 80-90 °C. An acrylate-based copolymer is prepared by reacting, and the prepared acrylate-based copolymer and polyurethane acrylate having a weight average molecular weight of 15,000-20,000 are mixed in a ratio (weight ratio) of 60-70:30-40. preparing a resin; 10-20 wt% of carbon fiber having an average length of 500-600 nm, 20-30 wt% of zeolite having a particle size of 150-200 nm supported with magnesium hydroxide, 15-25 wt% of lithium silicate and 35-45 wt% of calcium carbonate % to prepare a filler; and 100 parts by weight of the acrylate-based resin prepared above, 75-100 parts by weight of the filler, 15-25 parts by weight of silver nanoparticles having a particle size of 20-30 nm, and zinc oxide nanoparticles having a particle size of 20-30 nm. 5-15 parts by weight, 1-3 parts by weight of oxydiphenoxarsine (10,10'-oxydiphenoxarsine, OBPA), 1-3 parts by weight of ammonium polyacrylate, 2-4 parts by weight of propylene glycol, epoxidized soybean oil 2- 4 parts by weight, 20-30 parts by weight of polyether-modified polydimethylsiloxane, 35-45 parts by weight of polysiloxane emulsion, 10-20 parts by weight of hydroxyethyl cellulose and 1-3 parts by weight of sodium polyacrylate 2000 at a temperature of 40-50°C It provides a method for preparing a putty composition comprising; preparing a putty composition by stirring at a rotation speed of rpm for 30-60 minutes.

At this time, the method of manufacturing the putty composition according to the present invention is shown in a flow chart through FIG. 1 , and the method of manufacturing the putty composition according to the present invention will be described in detail step by step with reference to the flowchart of FIG. 1 .

First, in the method for preparing a putty composition according to the present invention, a catalyst is added to 35-45 wt% of methyl methacrylate monomer, 35-45 wt% of ethyl acrylate monomer, and 15-25 wt% of glycidyl methacrylate monomer. An acrylate-based copolymer is prepared by reacting at a temperature of 80-90°C, and the prepared acrylate-based copolymer and a polyurethane acrylate having a weight average molecular weight of 15,000-20,000 are mixed in a ratio of 60-70:30-40 (weight ratio). ) to prepare an acrylate-based resin.

In the above step, as a resin applied to the putty composition, an acrylate-based resin is prepared, and an acrylate-based copolymer comprising a methyl methacrylate monomer unit, an ethyl acrylate monomer unit and a glycidyl methacrylate monomer unit, It is prepared by mixing polyurethane acrylate.

Specifically, the acrylate-based copolymer is 80- by adding a catalyst to 35-45 wt% of methyl methacrylate monomer, 35-45 wt% of ethyl acrylate monomer, and 15-25 wt% of glycidyl methacrylate monomer. It is prepared by reacting at a temperature of 90 °C. Preferably, a catalyst is added to 40 wt% of a methyl methacrylate monomer, 40 wt% of an ethyl acrylate monomer, and 20 wt% of a glycidyl methacrylate monomer and reacted at a temperature of 90°C. An acrylate-based resin may be prepared by mixing the thus-prepared acrylate-based copolymer and 15,000-20,000 polyurethane acrylate in a ratio (weight ratio) of 70:30. The acrylate-based resin prepared as described above may exhibit excellent adhesion, and the dried coating film may exhibit excellent water resistance and high elasticity.

The catalyst is preferably azobisisobutyronitrile (AIBN).

Next, the method for producing a putty composition according to the present invention includes 10-20% by weight of carbon fibers having an average length of 500-600 nm, 20-30% by weight of zeolite having a particle size of 150-200 nm supported with magnesium hydroxide, and silicic acid. and mixing 15-25% by weight of lithium and 35-45% by weight of calcium carbonate to prepare a filler.

In the above step, as a filler applied to the putty composition, carbon fibers having an average length of 500-600 nm, magnesium hydroxide-supported zeolite, lithium silicate and calcium carbonate are mixed and prepared.

Specifically, the filler is 10-20 wt% of carbon fiber having an average length of 500-600 nm, 20-30 wt% of zeolite having a particle size of 150-200 nm supported with magnesium hydroxide, 15-25 wt% of lithium silicate and It is preferably prepared by mixing 35-45% by weight of calcium carbonate, more preferably 15% by weight of carbon fiber of 500-600 nm, 25% by weight of zeolite having a particle size of 150-200 nm supported with magnesium hydroxide, silicic acid When 20 wt% of lithium and 40 wt% of calcium carbonate are mixed, 4-6 parts by weight of ethanol is added based on 100 parts by weight of the filler and mixed for 5-10 minutes at a rotation speed of 500-600 rpm, and 70-80°C The ethanol can be evaporated by heating. In the present invention, the filler is applied as various mixtures, and the filler is uniformly mixed in advance to facilitate dispersion in the acrylate-based resin. Accordingly, the physical properties of the subsequently dried coating film are uniform and excellent.

Next, the method for preparing a putty composition according to the present invention comprises 100 parts by weight of the acrylate-based resin prepared above, 75-100 parts by weight of the filler, 15-25 parts by weight of silver nanoparticles having a particle size of 20-30 nm, 5-15 parts by weight of zinc oxide nanoparticles having a particle size of 20-30 nm, 1-3 parts by weight of oxydiphenoxarsine (10,10'-oxydiphenoxarsine, OBPA), 1-3 parts by weight of ammonium polyacrylate, propylene glycol 2-4 parts by weight, 2-4 parts by weight of epoxidized soybean oil, 20-30 parts by weight of polyether-modified polydimethylsiloxane, 35-45 parts by weight of polysiloxane emulsion, 10-20 parts by weight of hydroxyethylcellulose and 1 sodium polyacrylate -3 parts by weight were stirred at a temperature of 40-50° C. at a rotation speed of 2000 rpm for 30-60 minutes to prepare a putty composition.

In the above step, the prepared acrylate-based resin and the prepared filler are mixed with a specific inorganic antibacterial agent, an organic antibacterial agent, a dispersing agent, an antifreeze agent, a plasticizer, a wetting agent, an antifoaming agent, a thickener and a thickening stabilizer, and the mixture is rotated at 2000 rpm at a temperature of 40-50 ° C. The putty composition is prepared by stirring at speed for 30-60 minutes. Preferably, the putty composition is prepared by stirring at a temperature of 44-46° C. at a rotation speed of 2000 rpm for 40-50 minutes.

More preferably, 100 parts by weight of the acrylate-based resin prepared above, 100 parts by weight of the filler, 20 parts by weight of silver nanoparticles having a particle size of 20-30 nm, and zinc oxide nanoparticles having a particle size of 20-30 nm 10 parts by weight, 2 parts by weight of oxydiphenoxarsine (10,10'-oxydiphenoxarsine, OBPA), 2 parts by weight of ammonium polyacrylate, 3 parts by weight of propylene glycol, 3 parts by weight of epoxidized soybean oil, polyether-modified polydimethylsiloxane 25 parts by weight, 40 parts by weight of polysiloxane emulsion, 15 parts by weight of hydroxyethyl cellulose and 2 parts by weight of sodium polyacrylate may be mixed.

Hereinafter, the present invention will be described in more detail by way of the following examples.

However, the following examples are merely illustrative of the content of the present invention, and the scope of the present invention is not limited by the examples and experimental examples.

<Preparation Example 1> Preparation of acrylate-based resin

Methyl methacrylate and ethyl acrylate were put into a four-necked flask, glycidyl methacrylate was added while stirring, and 2 g of azobisisobutyronitrile (AIBN) was added dropwise as a catalyst, and the temperature was raised to 85°C. When the temperature became constant, it was held for 1 hour and 30 minutes. After the reaction was completed, an acrylate-based copolymer in a transparent liquid state was obtained.

An acrylate-based resin was prepared by mixing the acrylate-based copolymer and a polyurethane acrylate having a weight average molecular weight of 20,000 at a mixing ratio (weight ratio) of 65:35.

<Preparation Example 2> Preparation of filler

15% by weight of carbon fiber having an average length of 540-560 nm, 25% by weight of zeolite having a particle size of 150-200 nm supported with magnesium hydroxide, 20% by weight of lithium silicate and 40% by weight of calcium carbonate were placed in a stirrer, and ethanol was added By adding 1/20 of the weight of the filler, the mixture was mixed for 5 minutes at a rotation speed of 600 rpm, and the filler was prepared by heating at 80°C.

<Example 1> Preparation of putty composition

In the above step, the prepared acrylate-based resin and the prepared filler are mixed with a specific inorganic antibacterial agent, an organic antibacterial agent, a dispersing agent, an antifreeze agent, a plasticizer, a wetting agent, an antifoaming agent, a thickener and a thickening stabilizer, and the mixture is rotated at 2000 rpm at a temperature of 40-50 ° C. The putty composition is prepared by stirring at speed for 30-60 minutes. Preferably, the putty composition is prepared by stirring at a temperature of 44-46° C. at a rotation speed of 2000 rpm for 40-50 minutes.

100 parts by weight of the acrylate-based resin prepared in Preparation Example 1, 100 parts by weight of the filler prepared in Preparation Example 2, 20 parts by weight of silver nanoparticles having a particle size of 20-30 nm, and zinc oxide having a particle size of 20-30 nm 10 parts by weight of nanoparticles, 2 parts by weight of oxydiphenoxarsine (10,10'-oxydiphenoxarsine, OBPA), 2 parts by weight of ammonium polyacrylate, 3 parts by weight of propylene glycol, 3 parts by weight of epoxidized soybean oil, polyether-modified poly 25 parts by weight of dimethylsiloxane, 40 parts by weight of polysiloxane emulsion, 15 parts by weight of hydroxyethyl cellulose and 2 parts by weight of sodium polyacrylate were placed in a stirrer and stirred at a temperature of 45° C. at a rotation speed of 2000 rpm for 45 minutes to prepare a putty composition. .

<Comparative Example 1>

High elasticity putty products sold by KCC were purchased and used.

<Experimental Example 1>

Experiments were conducted using the putty compositions prepared in Example 1 and Comparative Example 1, and the results are shown in Table 1 below.

Test Items elongation at break adherence water resistance alkali resistance antibacterial Example 1 971 N/mm 5A nothing strange nothing strange 99.99% Comparative Example 1 655 N/mm 3A nothing strange nothing strange 65.00% Test Methods KS F 3211:2008 ASTM D 3359-09 KS M ISO 2812
Soaking in tap water for 7 days KS M ISO 2812
Immersion in 5% sodium carbonate aqueous solution for 48 hours *Antibacterial test for strains

* The strain targets Salmonella, MRSA, Escherichia coli, and Staphylococcus aureus.

As shown in Table 1, it can be seen that the putty composition presented in the present invention exhibits high elasticity, has excellent water resistance, alkali resistance and adhesion, and has excellent antibacterial properties.

Claims (3)

100 parts by weight of acrylate-based resin, 75-100 parts by weight of filler, 25-35 parts by weight of inorganic antibacterial agent, 1-3 parts by weight of organic antibacterial agent, 1-3 parts by weight of dispersant, 2-4 parts by weight of anti-freezing agent, 2-4 parts by weight of plasticizer parts by weight, 20-30 parts by weight of a wetting agent, 35-45 parts by weight of an antifoaming agent, 10-20 parts by weight of a thickener and 1-3 parts by weight of a thickening stabilizer,
The acrylate-based resin is an acrylate-based copolymer comprising 35-45 wt% of a methyl methacrylate monomer unit, 35-45 wt% of an ethyl acrylate monomer unit, and 15-25 wt% of a glycidyl methacrylate monomer unit, and the weight It consists of a mixture mixed in a ratio (weight ratio) of 60-70:30-40 of polyurethane acrylate having an average molecular weight of 15,000-20,000,
The filler consists of a mixture of carbon fibers having an average length of 500-600 nm, zeolite having a particle size of 150-200 nm supported with magnesium hydroxide, lithium silicate and calcium carbonate,
The inorganic antibacterial agent is silver nanoparticles having a particle size of 20-30 nm and zinc oxide nanoparticles having a particle size of 20-30 nm,
The organic antibacterial agent is oxydiphenoxarsine (10,10'-oxydiphenoxarsine, OBPA),
The dispersant is ammonium polyacrylate,
The cryoprotectant is propylene glycol,
the plasticizer is epoxidized soybean oil,
The wetting agent is polyether-modified polydimethylsiloxane,
The antifoaming agent is a polysiloxane emulsion,
The thickener is hydroxyethyl cellulose,
The thickening stabilizer is sodium polyacrylate,
Putty composition, characterized in that the elongation at break is 800-1,000 N/mm. delete A catalyst was added to 35-45 wt% of methyl methacrylate monomer, 35-45 wt% of ethyl acrylate monomer, and 15-25 wt% of glycidyl methacrylate monomer, and reacted at a temperature of 80-90° C. Preparing a copolymer and mixing the prepared acrylate-based copolymer and polyurethane acrylate having a weight average molecular weight of 15,000-20,000 in a ratio (weight ratio) of 60-70:30-40 to prepare an acrylate-based resin ;
10-20 wt% of carbon fiber having an average length of 500-600 nm, 20-30 wt% of zeolite having a particle size of 150-200 nm supported with magnesium hydroxide, 15-25 wt% of lithium silicate and 35-45 wt% of calcium carbonate % to prepare a filler; and
100 parts by weight of the acrylate-based resin prepared above, 75-100 parts by weight of the filler, 15-25 parts by weight of silver nanoparticles having a particle size of 20-30 nm, and zinc oxide nanoparticles having a particle size of 20-30 nm 5 -15 parts by weight, 1-3 parts by weight of oxydiphenoxarsine (10,10'-oxydiphenoxarsine, OBPA), 1-3 parts by weight of ammonium polyacrylate, 2-4 parts by weight of propylene glycol, 2-4 parts by weight of epoxidized soybean oil parts by weight, 20-30 parts by weight of polyether-modified polydimethylsiloxane, 35-45 parts by weight of polysiloxane emulsion, 10-20 parts by weight of hydroxyethyl cellulose, and 1-3 parts by weight of sodium polyacrylate at a temperature of 40-50° C. at 2000 rpm A method of producing a putty composition comprising; preparing a putty composition by stirring at a rotation speed of 30-60 minutes.

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