KR101105122B1 - Loess tile adhesive with vinyl water - Google Patents

Abstract

PURPOSE: A vinyl-based aqueous adhesive for a yellow soil brick is provided to improve the durability of the yellow soil brick by enhancing the storage stability. CONSTITUTION: A vinyl-based aqueous adhesive for a yellow soil brick contains 25-35wt% of mixing resin, 0.05-0.1wt% of dispersing agent, 0.05-0.1wt% of antiseptic, 0.1-0.5wt% of pH controller, 5-10wt% of filler, 40-45wt% of SiO2, 4-5wt% of Fe2O3, 35-38wt% of Al2O3, and less than 1wt% of CaO. The vinyl-based aqueous adhesive additionally contains 35-40wt% of yellow soil powder with the particle size of 200 meshes, and 15-25wt% of dilution solvent.

Description

Loose Tile adhesive with vinyl water

The present invention relates to a one-component loess tile adhesive and a method for producing the same using an ethylene vinyl acetate (EVA) emulsion resin and an acrylic resin mixed with 1: (0.5 to 1.5), respectively, and ethylene vinyl acetate (ethylene vinylacetate, EVA) relates to a one-component ocher tile adhesive mainly comprising an emulsion resin, ocher powder and water.

Particle size is generally 75 ± 10㎛ for the use of yellow soil, and the pore volume between clay and particles is usually 45 ~ 55%, less is 10-15%, many is 50 ~ 60%. The color is dark red when iron oxide is high, and pale yellow when lime material is high. In terms of strength, the adhesion strength is related to the structure of the clay and is affected by the particle size.

Ocher neutralizes the alkaline component of cement, which is the mainstream of building materials, generates large amounts of far-infrared rays to generate heat in the human body, which facilitates blood circulation and metabolism, and has been developed in various ways as finishing materials. As a result, problems such as poor storage stability such as viscosity increase and dryness have been caused, and the present invention has been developed for the purpose of supplementing this problem.

The present invention can be used only as a finishing material of the conventional one-component and two-component ocher finish material and was developed to solve problems such as tiled, deterioration of adhesion force when the ocher tile is attached.

In the related art related to the present invention, Korean Patent Registration No. 10-0983871 (a one-component ocher finish using a vinyl-based aqueous adhesive and its manufacturing method) is a method of mixing a vinyl-based aqueous adhesive with ocher, water, and an emulsifier.

However, these prior art is different from the present invention in the technical configuration.

In general, the ocher finishes that are commonly used are caused by sagging and dryness of ocher tiles to be used as ocher tile adhesives. This drooping and dryness is related to the viscosity and workability of the ocher adhesive. Usually, when the viscosity is increased, the drooping of the ocher tile may be reduced, but the appearance of the ocher tile may cause the ocher tile to fall off or the adhesive strength may decrease. If the viscosity is lowered, the dryness can be reduced, which helps to prevent the fall of the tile, but the worker's efficiency due to drooping is significantly reduced.

The present invention relates to an existing ocher adhesive by adding an ocher powder, a diluting solvent, a filler, and a dispersant to a resin in which an ethylene vinyl acetate (EVA) emulsion resin and an acrylic resin are each mixed with 1: (0.5 to 1.5) as described above. Compared with the improvement of storage stability, tiled and surface finish, high adhesive strength and durability to improve the tile construction quality, and improves the efficiency during construction to reduce the fatigue of the worker.

Ethylene vinyl acetate (EVA) emulsion resin is prepared by pressurizing ethylene to vinyl acetate at 80 to 85 ° C. at 50 atmospheres. EVA-based resins have viscosity and rubber elasticity at the same time, so they are often used as adhesives. They are often used only for plastering and waterproofing materials, which require bending strength and impact strength. It has the characteristics of adhesion, low water resistance and workability (slip). However, there is a difficulty in applying the one-component type of tile adhesive due to workability (sliding), which is one of important physical properties.

In order to improve this, ethylene vinyl acetate (EVA) emulsion resin and acrylic resin are mixed with 1: (0.5 ~ 1.5), respectively, to improve fast curing, water resistance and adhesion, and to improve ocher powder, diluent solvent and filler. By adding a dispersant, it has the effect of preventing workability (slip).

In the present invention, the ethylene vinyl acetate (EVA) emulsion resin is water-soluble and pollution-free, so it is harmless to the human body, and can add far-infrared radiation effect by adding ocher powder. However, the conventional ocher finish provides a one-component ocher tile adhesive in order to solve the problem that the adhesive strength is reduced due to the ocher tile sagging and the outer surface to be used as the ocher tile adhesive.

The vinyl-based ocher tile adhesive of the present invention is a liquid resin in which 25 to 35% by weight of an ethylene vinylacetate emulsion resin and an acrylic resin are mixed at a weight ratio of 1: (0.5 to 1.5), respectively, based on the total composition. , 1.5 to 2.5 wt% thickener, 0.05 to 0.1 wt% dispersant, 0.05 to 0.1 wt% preservative, 0.05 to 0.2 wt% ethylene glycol, 0.05 to 0.1 wt% plasticizer, 0.1 to 0.5 wt% It consists of a composition containing% ph regulator, 5-10 weight% filler, 35-40 weight% ocher powder, and 15-25 weight% dilution solvent.

Ethylene vinyl acetate (EVA) emulsion resins must be used with glass transition temperatures of 0 ° C to -15 ° C, 54 to 56% solids, 3000 to 4000 cps, and 4.0 to 5.0 ph. do.

An acrylic resin contains 50 weight% or more of solid content as copolymerization synthetic resin emulsion, such as normal styrene-acryl. The acrylic resin is synthesized by copolymerizing two or three kinds of acrylic monomers. As the acrylic monomer, 2-ethylhexyl acrylate (2-EHA), acrylic acid (AA), methacrylic acid (methacrylic acid, MAA), methyl methacrylate (MMA), etc. are used, and it is manufactured by using styrene as a reinforcing agent to enhance water resistance. Between ethylene vinyl acetate (EVA) and acrylic resin A liquid resin mixed at a weight ratio of 1: (0.5 to 1.5), respectively, is used.

If other liquid resin and ratio are used, the surface dryness and slip resistance are reduced, resulting in poor workability and adhesion.

Thickeners are used to maintain high viscosity and to have excellent phoxotropy properties that show flowability when subjected to external forces. However, if the amount of thickener used is large, water resistance becomes worse due to water absorption, so be careful. As a thickener, a salt salt of an acrylic resin is usually used.

The dispersant functions to evenly distribute the solids in the composition, and generally uses granule-type white powder, that is, sodium hexametaphosphate.

As the preservative, benzoic acid, silicic acid, formalin and the like can be used. However, formalin is very irritating to humans and should be avoided if possible. Tile adhesives use natural products to improve their thickening and adhesion. Therefore, when the temperature and humidity are high in summer, they may be deteriorated and deteriorated by microorganisms. Therefore, an appropriate amount of preservative should be added.

Ethylene glycol is used to improve workability.

Plasticizers serve to provide flexibility to the coating and to increase adhesion. Be careful, however, because excessive use will weaken the coating. As the plasticizer, Texanol, which is commercially available as 2,2,4-trimethyl-1,3-pentadiol monoisobutyrate, can be used. .

The pH control agent uses a strong base such as ammonium hydroxide as the pH of the whole composition.

The filler uses calcium carbonate (CaCO ₃ ) or silica sand, preferably calcium carbonate. Fillers are used to maintain the proper particle size in the product to shorten the drying time and maintain workability.

Ocher powder is the powder completely to the dried yellow soil using a crushing apparatus such that particles are finely filtered collected obtained, the particle size is the size of the 200Mesh (75 ± 10㎛) and Sio ₂ 40~45% by weight, Fe ₂ O ₃ 4-5 wt%, Al ₂ Those having a chemical component having 35 to 38% by weight of O ₃ , 1% by weight or less of CaO, 1% or less of Mgo, or 13 to 15% of a loss of ignition must be used.

If it is out of the range, cracks or dryness may occur, leading to a decrease in adhesion strength.

Water is used as the diluting solvent. Water should be used with caution as the change in viscosity is remarkable even with small amounts of water.

Hereinafter will be described in more detail the configuration and effect of the present invention through the examples and experiments of the present invention described above. This embodiment is for illustrating the present invention, but the content of the present invention is not limited thereto.

Comparative Example 1 is a product of Company S, which is the most common tile adhesive, Comparative Example 2 is a product of ocher finish 2, Example is mixed resin [ethylene vinylacetate (ethylene vinylacetate) emulsion resin and acrylic resin within the scope of the present invention 25-35% by weight, thickener 1.5-2.5%, dispersant 0.05-0.1%, preservative 0.05-0.1%, ethylene glycol (Ethylene glycol) ) 0.05 to 0.2% by weight, plasticizer 0.05 to 0.1% by weight, ph regulator 0.1 to 0.5% by weight, filler 5 to 10%, ocher powder 35 to 40% by weight, diluent solvent 15 to 25% by weight.

After the construction, the test was conducted.

In order to confirm the effect of the present invention, the properties of the vinyl-based aqueous ocher tile adhesive prepared as described above were measured according to the following measurement method, and the results are shown in the table.

[How to measure]

The measurement method was quoted by the Korean Industrial Standards (KS), and when the Korean Industrial Standards (KS) did not indicate a measurement method, a generalized measurement method was used. General conditions of the test are as follows.

-Preparation of specimens and test specimens is to be done in standard condition unless otherwise specified. Standard condition means the standard condition (temperature 20 ± 2 ° c, humidity 65 ± 10%) specified in KS L 0006.

-Samples and materials used for testing should be left in the standard room for 24 hours before manufacturing.

-Adhesive should be stirred well when testing.

Materials and tools used for the test are as follows.

-The materials and tools used for the test are to be in accordance with the table below.

-The applicator used for the test shall be a standard comb. However, combs specified by the manufacturer may be used. The thickness shall be 0.8 6 0.2 mm.

-The adhesive surface of the iron strip used for the manufacture of the test specimen shall be 40 × 40mm.

(1) storage stability

Dispense 1 kg of glue and prepare 4 bottles. Store at 20 ± 2 ° C for at least two weeks out of four weeks and 50 ± 2 ° C for the second two weeks, and visually inspect for significant changes in volume and viscosity thereafter. (KS L 1593)

(2) adhesive strength

Adhesive strength test method is as follows.

1) Test material: The test material is as follows.

a) ground material

The base material is mortar plate and the size is 70X70mm and the thickness is 20mm. Clean the surface to avoid dust and other foreign matter.

b) porcelain tiles

Porcelain tiles (hereinafter referred to as tiles) are cut to 40X40mm in advance.

2) Preparation of test body: The production of test body is as follows.

a) application of adhesive

For the application of adhesive to the base material, insert 5 pieces of base plate without gaps on the flat surface of the iron application frame of KS L 1593 without gaps, take the appropriate amount of adhesive and apply it with a standard comb. When applying the adhesive, attach the tape specified in KS A1527 to the base material so that the butterfly 7mm is covered, put the appropriate amount of adhesive on it, apply it with a thickness of 3mm using a spatula, etc. Pull up in front of you at once with both speeds and apply the adhesive evenly with 5 bases. The tape is peeled off slowly after applying the adhesive.

b) tile attachment

In principle, after 20 minutes of application of the adhesive, the ceramic tile cut to 40X40mm size is placed in the center of the base material on which the adhesive is applied, and the weight of 1kg is placed on it for about 30 seconds, and then the weight is removed. Cure daily.

c) device of iron strip

Between 4 and 6 days of curing, the iron piece specified in KS L 1593 is adhered to the tile with epoxy resin adhesive or the like under the standard condition. (When preparing the test specimen, the surface of the tile may be roughened with sand paper, etc.).

3) Treatment of test body: The processing of test body is as follows.

a) dry and wet repetition

After high humidity curing, cure according to the table below and dry in a constant temperature room. Wetting is done in a constant temperature and humidity room.

b) thermal aging

After standard curing, cure in a constant temperature room according to the table below.

c) low temperature curing

After curing at low temperature, cure in a constant temperature room according to the table below.

4) Adhesion Strength Test

a) testing machine

The tester is a tensile tester whose breakdown load is 15-85% of the tester capacity, and the tension rate can be adjusted to 3 mm / min.

b) adhesive strength

After curing the test body, the adhesive strength is set on the tester using a jig, the tensile test is performed at a tensile speed of 3 mm / min, and the maximum load until breaking is recorded and the broken state is recorded. Tensile tests are also done immediately after completion of curing. However, the test specimens subjected to thermal aging curing shall be left to stand in a standard state for 24 hours.

c) How to find the adhesive strength

Adhesion strength is calculated by the following equation.

Adhesion strength is expressed by the average value of 5 specimens.

d) broken status record

Observe the broken surface, visually measure the broken area representing the maximum area, and mark the broken area. In addition, test specimens cut at the interface between iron and tile shall be retested according to the number of specimens, and shall be expressed as the average of the five specimens in combination with the previous figures. (KS L 1593)

(3) heat resistance

Two tiles are bonded to each other 10mm up and down, and the standard cured specimen is almost vertically attached to a 60 ° C thermostat, and a weight of 4.5 kg is placed on one tile and left for 24 hours. If the tile is not peeled off and falls off, pass (KS L 1593).

(4) slip resistance

A 8mm thick slate (flexible plate) is cut to a size of 200 x 500mm, and a 5mm bar is attached to both ends of the short sides with an epoxy resin adhesive. Surfaces should be clean to prevent dirt and other foreign matter from adhering. Use 100mm angular ceramic tiles on the back. To apply the adhesive to the base, take an appropriate amount of the adhesive on the base and apply a thickness of about 3 mm to the base using a spatula or the like. The standard comb is then angled at 60 ° and pulled out at once at both speeds to remove any remaining adhesive. The direction of combing is two places parallel and perpendicular to the long side of the base material. Within 5 minutes after the application of the adhesive, the tile is placed on the base material coated with the adhesive, and the weight of 5 kg is placed on the substrate for about 30 seconds. Then, the weight is removed and marked with ink in the center of the test specimen. Stand upright. After 24 hours, the slip length at the baseline is measured with a scale of 0.5 mm or more. (KS L 1593)

(5) Applicable time

The attachable time is the longest time satisfying the standard adhesive strength (KS L 1593).

(6) appearance

The adhesive collected for the test is opened in a bright place and inspected for color and foreign matters.

(7) viscosity

Spindele No. using an RVT viscometer It was measured at T-F, rpm 2.5.

(8) emissivity and energy

Far-infrared radiation test was measured using a Fourier Transformation Infrared Spectroscopy (FT-IR, MIDAC, M2410-C) at 40 ℃ range of 5 ~ 20㎛. (KICM-FIR-1005: 2006)

As shown in the results, Comparative Example 1 appears to have good physical properties satisfying the performance of the tile adhesive of KS L 1593, while Comparative Example 2 appears to fall short of the KS standard.

In addition, the vinyl-based aqueous ocher tile adhesive of Example also exhibits physical properties satisfying KS L 1593 as in Comparative Example 1, and shows a significant difference when further testing of the far-infrared radiation test.

This functional adhesive technology is a vinyl-based water-based ocher tile that can be used conveniently and safely. The development of adhesives is urgent.

Claims (3)

Mixed resins {Ethylene vinyl acetate and acryl resin having a glass transition temperature of 0 ° C to -15 ° C, a solid content of 54 to 56%, a viscosity of 3000 to 4000 cps, and a pH of 4.0 to 5.0, respectively, 1: (0.5) 25 to 35% by weight of a liquid resin mixed in a weight% ratio of ˜1.5); 0.05 to 0.1% by weight of a dispersant; Preservative 0.05 to 0.1 wt%; 0.1 to 0.5% by weight of pH regulator; Filler 5-10 wt%; A particle size of 200Mesh (75 ± 10um) including 40 to 45% by weight of SiO2, 4 to 5% by weight of Fe2O3, 35 to 38% by weight of Al2O3, 1% by weight or less of CaO, and 13-15% by weight loss. Satisfactory ocher powder 35-40 wt%; Ocher tile adhesive comprising a diluting solvent 15 to 25% by weight delete delete