KR100655259B1 - A method to manufacture one pot type inorganic adhesives and one pot type inorganic adhesives manufactured by that method - Google Patents

Abstract

Provided are a method for preparing a one-pack type inorganic adhesive for a construction material, and a one-pack type inorganic adhesive prepared by the method which is environmentally friendly, is excellent in adhesive strength and does not discharge harmful materials. The method comprises the steps of mixing 32-38 wt% of an aluminum hydroxide powder, 3 wt% of a copper oxide powder, 20-25 wt% of a zinc oxide powder, 30-41 wt% of liquid sodium silicate and 4 wt% of liquid methyl cellulose and stirring them with 1,000 rpm; adding 8-9 times amount of sodium silicate by weight and stirring it with 1,000 rpm for 1 hour; and 2 times amount of a natural inorganic material selected from yellow soil, sand, jade and illite based on the weight of the total material and stirring it with 1,000 rpm for about 30 hours.

Description

A method to manufacture one pot type inorganic adhesives and one pot type inorganic adhesives manufactured by that method}

1 is a TGA / DTA diagram of the present invention.

The present invention relates to the composition of an environmentally friendly adhesive mainly composed of sodium silicate (2Na2O, SiO₂) that can be used for building materials, and more specifically, a one-component adhesive having an inorganic fine powder such as ocher added to sodium silicate called water glass, and It relates to a manufacturing method.

In general, in the construction, adhesives or mortars are used to fix panels or tiles to walls or ceilings, and organic adhesives have been widely used when constructing interior materials such as wood, and organic adhesives have excellent adhesion but high amounts of volatile organic substances. The government has planned to prohibit the use of organic adhesives since July 2005 in accordance with the eco-friendly material construction policy since it was identified as a factor that causes symptoms such as sick house syndrome, atopic dermatitis, headache and sore throat. .

Therefore, the development of inorganic adhesives that can replace organic adhesives is urgently needed. As a commercially available eco-friendly adhesive, vinyl acetate-based adhesives are widely used, but vinyl acetate-based adhesives are less odorous and do not generate volatile organic compounds. There was a problem of generating a large amount of smoke and toxic gas in the event of fire.

In addition, as the environmentally friendly adhesives, many adhesives based on inorganic adhesives are known. However, the adhesive strength is remarkably low, or the two-component adhesives are inconvenient in use.

The present invention has been devised to solve the above problems and eliminates the use of volatile organic compounds in the raw materials without degrading the adhesive strength, thereby releasing harmful substances such as formaldehyde, and thus in the combustion of the adhesive in the event of a fire. It is an object of the present invention to provide an environmentally friendly adhesive that does not generate toxic gas.

Still another object of the present invention is to add ocher or jade powder, vermiculite or sand, and clay, illite and the like to finish the interior finishing material for coating the surface of the interior wall or ceiling that can take advantage of the known far infrared or anion emission. It is intended to be widely used.

In order to achieve the above object, the present invention provides a method for producing a one-component inorganic adhesive.

That is, the present invention mixes the powder of aluminum hydroxide, zinc oxide and copper oxide, liquid sodium silicate and methyl cellulose as a natural vegetable viscous material at a constant ratio, and stirs sufficiently to prepare "Material A" and refined to A material. Sodium silicate is added again and stirred to complete the basic material, followed by adding and stirring ocher or jade powder, vermiculite or sand, clay and illite, depending on the intended use.

The finished product of the present invention can be used immediately in applications such as adhesives in a state of very high viscosity, but in the case of coating, an appropriate amount of water may be mixed and used.

Hereinafter, preferred embodiments of the present invention will be described in detail.

The composition ratio of the material A in the composition of the adhesive of the present invention is shown in the table below, and the composition of the composition may be mixed with a pure inorganic compound in a certain ratio, but since natural substances including the components of the material A are often present in nature, The mixing result of the mixed natural materials may be adjusted to be equal to the mixing ratio of the material A.

The mixing ratio of material A is

ingredient Mixing ratio (wt%) Particle size Remarks Aluminum hydroxide 32 to 38 60 to 300 mesh Sodium Silicate 41-30 - Liquid Copper oxide 3 60 to 300 mesh Zinc oxide 20 to 25 60 to 300 mesh Methyl Cellulose 4 Average molecular weight less than 17,000 Viscous natural vegetable material

A material mixed in the ratio of the above table was sufficiently stirred at a stirring speed of about 1000rpm

Afterwards, refined sodium silicate is added again to complete the basic material.

The input ratio of sodium silicate to complete the basic material is mixed so that the silicate is 8 to 9 times by weight relative to the material A. At this time, the mixture is sufficiently stirred for about 1 hour at a normal temperature at a stirring speed of about 1000 rpm. give.

The method of manufacturing the ocher adhesive or ocher mortar using the base material prepared by the above method is to mix the ocher powder having a particle size in the range of 60 to 600 mesh and the ocher powder in the base material 1 at a ratio of 2 (wt basis). After stirring for about 30 minutes at a speed of 1000 rpm the preparation of the ocher adhesive is completed.

In addition, in the case of an adhesive with jade powder or an adhesive with vermiculite, a sand adhesive, a clay adhesive, and an illite adhesive, jade powder, vermiculite, sand and clay or illite are added to the base material in a ratio of 1: 2. Stirring completes the jade powder adhesive, vermiculite adhesive or sand adhesive, and clay adhesive and illite adhesive.

When the numerical value of the composition A was lower than or above, it was found that the tensile strength of the finished product was lowered. Preferably, about 35 wt% of aluminum hydroxide, 35 wt% of sodium silicate, and copper oxide 3 When the wt%, zinc oxide 23 wt% and methyl cellulose were 4 wt%, the most ideal tensile strength was obtained while reducing the waste of raw materials.

Referring to the action of the adhesive of the present invention produced by the above method is as follows.

First, when the basic adhesive of the present invention is completed, a raw material having a viscosity of about 22,000-24,000 cps is made, and loess or sand, vermiculite, jade powder, clay, illite powder, and the like are added at a speed of 1000 rpm. When the furnace is stirred for about 30 minutes, the final adhesive of water-like mud is completed.

The properties of each adhesive can be dried and cured in a relatively short time of about 2 hours when adhering hygroscopic materials, but when adhering a metal plate and a metal plate or adhering a non-hygroscopic material such as a stone plate and a stone plate, In this case, drying and curing time takes a long time, such as 24 to 48 hours.

In addition, once any adhesive is cured and dried after construction, the adhesive strength is more than twice the KS standard.

As a specific use for this, the ocher adhesive may be used for floorboard adhesive, interior wall finishing, tile bonding, and the like. The sand adhesive is used for tile bonding, interior wall finishing, and the like. It is mainly used for octale bonding, interior wall finishing, etc.

In addition, vermiculite adhesives are mainly used for interior wall finishing treatments, and clay adhesives can be used in various ways, such as floor board adhesion, interior wall finishing treatment, and color adjustment of ocher adhesives for tile adhesion. Suitable for wall finishing

The adhesive prepared by the present invention as described above is distributed by sealing with a vinyl, etc., when maintaining the fully sealed state does not cause degradation of physical properties even if the distribution period lasts more than one year.

Using the adhesive of the present invention as described above to explain the case of attaching a floorboard for a living space, such as a living room or room on concrete, for example, to clean the adhesive surface, and then wet the surface with water using a spray, adhesive Apply thinly with a spatula, etc., and apply lightly by pressing the floorboard or tile to be adhered. Its drying time is short and its adhesive strength reaches 2.6 N / mm2. More than twice the specification.

In addition, the basic material before mixing ocher or sand has a very high viscosity coefficient of more than 100,000 CPS, but depending on the purpose, it is convenient to add ocher or sand and dilute it with an appropriate amount of water to make it suitable for wallpaper. It is possible to make it as a grass, and if you apply wallpaper with this grass, it does not smell at all and completely prevents the generation of volatile organic compounds, and the adhesive strength is so excellent that it cannot be removed in the future when the wallpaper is to be removed.

In addition, when used as a mortar for attaching tiles, the adhesive strength is very excellent and can be free from cement poisons that may occur in cement.

The adhesive of the present invention may be used as a paint substitute by diluting with an appropriate amount of water.

When used as a paint, the solvent is water and does not use organic solvents, so it is a perfect well being material that does not affect the human body even if dried immediately after construction.

When sprayed after drying, it is strong enough not to be scratched even if it is scratched with nails or sharp metals, and it is possible to prevent the generation of toxic gases due to fire as well as not to burn in case of fire.

In addition, the present invention may reduce the flammability when applied to the surface of the combustible interior material such as wood to improve the fire resistance.

The adhesive of the present invention has excellent adhesive strength of 4.3 N / mm 2 when the adhesive strength is applied to metals and 2.6 N / mm 2 when used with wood. In the case of 0.25% methyl cellulose, the TGA / DTA (Thermal Gravity Analysis / Differential Gravity Analysis) diagram shows the number of bound and unbound water in some of the temperature rise up to 1300 ° C. After getting out near 300 ℃, a small amount of organic matter is decomposed.

Therefore, even if a fire occurs, no toxic gas is generated due to the combustion of the adhesive.

As described above, the present invention can secure high adhesive strength when used as an adhesive for construction and is more environmentally friendly because there is no emission of harmful substances to the human body, and when it replaces paint, it contains well-known useful components such as ocher, jade powder, vermiculite, etc. Not only can the interior finishing material show beautiful texture and color, but it is not harmful even if it is directly exposed to the worker's skin during site construction, and it is very simple to install because only one part of dilution water is added according to the purpose. It is evident that this is a very beneficial invention that can achieve useful effects at the same time.

Claims (14)

In the method of manufacturing the adhesive for construction materials, Add 32 wt% to 38 wt% of aluminum hydroxide powder, 3 wt% of copper oxide powder, 20 wt% to 25 wt% of zinc oxide powder, and 41 wt% to 30 wt% of liquid sodium silicate, and stir thoroughly at 1000 rpm. ; Preparing a base material by adding sodium silicate 8 to 9 times by weight to the weight of the mixture and stirring again for about 1 hour at a speed of about 1000 rpm; Step of adding the powder of the natural inorganic material made of any one of ocher, sand, jade, illite with respect to the weight of the base material by weight ratio and stirring for about 30 hours at a speed of 1000 rpm Method for producing a one-component inorganic adhesive, characterized in that. The method of claim 1, Powder of the natural inorganic material added to the base material is a one-component inorganic adhesive production method, characterized in that the yellow soil. The method of claim 1, Powder of the natural inorganic material added to the base material is a manufacturing method of a one-component inorganic adhesive, characterized in that the sand The method of claim 1, The powder of the natural inorganic material added to the base material is a method of producing a one-component inorganic adhesive, characterized in that vermiculite. The method of claim 1, The powder of the natural inorganic material added to the base material is a manufacturing method of a one-component inorganic adhesive, characterized in that jade. The method of claim 1, The powder of the natural inorganic material added to the base material is a one-component inorganic adhesive production method, characterized in that the clay. The method of claim 1, The powder of the natural inorganic material added to the base material is a one-component inorganic adhesive production method, characterized in that the illite. In adhesive for construction materials, Add 32 wt% to 38 wt% of aluminum hydroxide powder, 3 wt% of copper oxide powder, 20 to 25 wt% of zinc oxide powder, and 41 wt% to 30 wt% of liquid sodium silicate, and stir thoroughly at 1000 rpm. ; Preparing a base material by adding sodium silicate 8 to 9 times by weight to the weight of the mixture and stirring again for about 1 hour at a speed of about 1000 rpm; The powder of the natural inorganic material made of any one of ocher, sand, jade, and illite is added to the weight of the base material in a weight ratio, and the stirring is performed for about 30 hours at a speed of 1000 rpm. One-component inorganic adhesive, characterized in that. The method of claim 8, One-component inorganic adhesive, characterized in that the powder of the natural inorganic material added to the base material is ocher. The method of claim 8, One-component inorganic adhesive, characterized in that the powder of the natural inorganic material added to the base material is sand. The method of claim 8, One-component inorganic adhesive, characterized in that the powder of the natural inorganic material added to the base material is vermiculite. The method of claim 8, One-component inorganic adhesive, characterized in that the powder of the natural inorganic material added to the base material is jade. The method of claim 8, One-component inorganic adhesive, characterized in that the powder of the natural inorganic material added to the base material is clay. The method of claim 8, One-component inorganic adhesive, characterized in that the powder of the natural inorganic material added to the base material is illite.

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