KR101580763B1 - Heat insulation and the method of heat insulation - Google Patents

Abstract

The present invention relates to a heat insulation composition and a manufacturing method thereof and, more specifically, to a heat insulation composition and a manufacturing method thereof, having effective heat insulation effects by mixing Styrofoam waste, cement, a composition for promoting solidification, a stabilizing agent, red clay, and an enhancer. According to the present invention, in the case of constructing a structure by using a heat-insulation material manufactured by a manufacturing method of a heat-insulation material, the composition and the method are capable of providing various advantages of strength enhancement such as waterproof properties, temperature resistance, constant temperature, constant humidity, deodorizing effects, extended durability, prevention of crack generation, etc, and having effects of high heat insulation with low heat transmission.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a heat insulating material composition,

The present invention relates to a heat insulating material composition and a method of manufacturing the same. More particularly, the present invention relates to a heat insulating material composition for a factory, a school, or a prefabricated panel requiring efficient heat insulation by mixing waste styrofoam, cement, solidification promoting composition, stabilizer, And a manufacturing method thereof.

Generally, foamed styrofoam is widely used in construction sites and industrial sites. Such foamed styrofoam is widely used as a heat insulating material for a building in a construction site, and is widely used as a packing material for packaging electronic products in an industrial field.

In addition, urea foam is widely used as a molding mold of a mold product in a general industrial field.

However, although these foamed styrofoam and urea foam are advantageous in that they are convenient to use and inexpensive, they can not be buried in the ground because they are not corroded after use, so that the conditions for recycling can not be established. It is necessary to pay huge amount of money and collect it in a special place and incinerate or regenerate it. However, since it requires enormous facilities, it has a problem in that it causes great difficulty in processing in general SMEs or households and causes pollution.

As a prior art for solving this problem, Korean Patent No. 10-1208161 (Nov. 28, 2012) discloses a method for producing a steel sheet comprising 2 to 8 wt% of refractory styrofoam waste, 50 to 70 wt% of cement, 20 to 30 wt% of steelmaking sludge, 5 to 10 wt% % Mixture of water, water and water, and the mixture is subjected to injection molding or compression molding, with respect to recycled building materials of refractory styrofoam waste.

In Korean Patent No. 10-0997914 (Nov. 26, 2010), foamed polystyrene is pulverized into a powder state, and water glass, calcium carbonate, aluminum hydroxide, talc (or a mixture of loess or volcanic ash, vermiculite powder) A non-combustible recycled building material improved in incombustibility, sound-absorbing property and heat resistance, and a manufacturing method thereof.

Also disclosed is a process for pulverizing waste polystyrene foam or waste urea foam to a predetermined size in Korean Patent Laid-Open No. 10-2009-0120634 (November 25, 2009); Mixing 70 volume% of cement mixed with cement and sand and 30 volume% of foamed or waste urea foam with the pulverized waste stream, adding a predetermined amount of water to the mixed powder, and stirring the mixture uniformly with a stirrer; Compressing the agitated and kneaded material to a predetermined pressure to form bricks of a desired shape and size; And a step of drying the moisture contained in the molded bricks.

However, the conventional technique is fused at a relatively low temperature and easily burned when exposed to a flame. Furthermore, since toxic gas is generated at the time of combustion, there are various problems in using it as a building material and it is necessary to improve the effect as a heat insulating material.

Korean Patent No. 10-1208161 (November 28, 2012) Korean Patent No. 10-0997914 (Nov. 26, 2010) Korean Patent Laid-Open No. 10-2009-0120634 (November 25, 2009)

The present invention relates to a waterproofing agent which is excellent in water resistance, heat resistance, constant temperature, humidity, deodorizing effect, prolonged durability and prevention of cracking due to low heat transfer and high insulation effect by mixing waste styrofoam, cement, solidification promoting composition, stabilizer, It is an object of the present invention to provide a heat insulating material composition which can be used as a heat insulating material for a factory, a school or a prefabricated panel, and a method for producing the same.

The present invention, in one aspect,

A stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer,

The composition for accelerating the solidification comprises 5 to 15 wt% of magnesium hydroxide, 5 to 12 wt% of magnesium chloride, 2 to 7 wt% of calcium chloride, 2.5 to 6.5 wt% of potassium chloride, 2 to 8 wt% of sodium chloride, 10 to 25 wt% By weight of calcium hydroxide, 20 to 40% by weight of potassium hydroxide, 0.5 to 2% by weight of active magnesium hydroxide (Mg (OH) ₂ ), 0.5 to 2% by weight of tricarboxylic acid and 10 to 25%

Wherein the stabilizer comprises 2 to 7% by weight of potassium, 2 to 7% by weight of calcium chloride, 0.5 to 5% by weight of magnesium hydroxide, 2 to 7% by weight of sodium chloride and 80 to 90% by weight of water. do.

The present invention, in a further aspect,

Pulverizing the waste styrofoam to 5 to 20 mm;

5 to 15 wt% of magnesium hydroxide, 5 to 12 wt% of magnesium chloride, 2 to 7 wt% of calcium chloride, 2.5 to 6.5 wt% of potassium chloride, 2 to 8 wt% of sodium chloride, 10 to 25 wt% of sodium hydroxide, To 40 wt%, active magnesium hydroxide (Mg (OH) ₂ ) 0.5 to 2 wt%, tricarboxylic acid 0.5 to 2 wt%, and water 10 to 25 wt%;

2-7% by weight of potassium, 2-7% by weight of calcium chloride, 0.5-5% by weight of magnesium hydroxide, 2-7% by weight of sodium chloride and 80-90% by weight of water to prepare a stabilizer;

A mixture of 70 to 90% by weight of waste styrofoam, 5 to 15% by weight of cement, 0.5 to 5% by weight of a solidifying accelerator, 0.5 to 5% by weight of a stabilizer, 1 to 10% by weight of a soil and 1 to 5% Stirring the mixture at a speed of 10 to 500 rpm / min for 5 to 30 minutes to prepare a heat insulating material composition;

Compressing the heat insulating material composition to form a desired shape and size; And

And curing the molded heat insulating material composition at a room temperature for 60 to 90 hours.

Accordingly, when the structure is constructed using the heat insulating material manufactured according to the method of manufacturing the heat insulating material according to the present invention, low thermal conductivity provides a high heat insulating effect and is excellent in water resistance, temperature resistance, constant temperature, humidity, deodorizing effect, prolonged durability, It is possible to provide various advantages of strength enhancement such as prevention.

In addition, resource saving and waste recycling are possible because waste styrofoam is used instead of existing aggregate which is the main cause of environmental destruction.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a method for manufacturing a heat insulating material according to the present invention. FIG.

The present invention, in one aspect,

A stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer,

The composition for accelerating the solidification comprises 5 to 15 wt% of magnesium hydroxide, 5 to 12 wt% of magnesium chloride, 2 to 7 wt% of calcium chloride, 2.5 to 6.5 wt% of potassium chloride, 2 to 8 wt% of sodium chloride, 10 to 25 wt% By weight of calcium hydroxide, 20 to 40% by weight of potassium hydroxide, 0.5 to 2% by weight of active magnesium hydroxide (Mg (OH) ₂ ), 0.5 to 2% by weight of tricarboxylic acid and 10 to 25%

Wherein said stabilizer comprises 2-7% by weight of potassium, 2-7% by weight of calcium chloride, 0.5-5% by weight of magnesium hydroxide, 2-7% by weight of sodium chloride and 80-90% by weight of water .

Hereinafter, the present invention will be described in more detail.

The waste styrofoam may include not only waste styrofoam, but also waste heat insulation materials such as rigid urethane foam, which is a thermosetting resin used in an electronic product to be disposed of, and all lightweight materials that can be recycled.

As is known, styrofoam is a product of expansion of polystyrene by the action of foaming agent. It is called foamed polystyrene, styrofoam, foamed styrene, styropole, etc. It is white and light, and it is waterproof, insulation, soundproof, And the like are widely used preferably. In addition, urea foam is an insulation material that is injected or injected into the construction site by foaming the urea resin in the field using a hardener and air, and is a kind of injection-type thermal insulation material, which is convenient for construction on construction site and widely used in industry.

The cement can strengthen the strength of the heat insulating material. If the cement is out of the set range, it is difficult to achieve a certain strength.

The cement may be ordinary cement, for example, ordinary cement such as Portland cement

The composition for accelerating the solidification comprises 5 to 15 wt% of magnesium hydroxide, 5 to 12 wt% of magnesium chloride, 2 to 7 wt% of calcium chloride, 2.5 to 6.5 wt% of potassium chloride, 2 to 8 wt% of sodium chloride, 10 to 25 wt% , 20 to 40 wt% of potassium hydroxide, 0.5 to 2 wt% of active magnesium hydroxide (Mg (OH) ₂ ), 0.5 to 2 wt% of tricarboxylic acid, and 10 to 25 wt% of water.

In the present invention, magnesium oxide (raw MgO milk) used in the present invention does not burn MgO milk extracted by dilution reaction of raw limestone or dolomite with seawater and removes only salt and other impurities, Of MgO (H ₂ O).

In detail, MgO (H ₂ O) (MgO) is produced by diluting a mineral substance including magnesite, quicklime or dolomite into seawater to remove MgO (H ₂ O) And MgO milk is called a cake in which impurities such as moisture and salt are removed. This cake is calcined to 800 ° C to 1200 ° C and pulverized to form a flour as MgO or MgO powder. When water (H ₂ O) is contained in the MgO powder, it is called MgO (H ₂ O) (magnesium hydroxide) .

However, the raw MgO milk used in the present invention means that raw limestone or dolomite ore is diluted at room temperature in sea water and reacted for 1 to 2 hours to dry the MgO milk without drying, Milk in the form of milk that has been removed only by impurities is commercialized as it is used for various applications. The pore size is four times larger (4 to 5 microns) than that of fired MgO (H ₂ O) When a certain amount of magnesium oxide is mixed with a mixture of particles and particles in a liquid phase, the particles are bound together by a certain amount of acicular ring crystals such as an ettring guide between solid particles and solidified to solidify the pores to form cations in pores and structures, And is strong against acid alkali. The drying system is not particularly limited, but it may be preferable to perform the drying at 400 to 600 ° C for about 10 to 30 minutes.

It is also preferred that oxycalde is formed by mixing calcium chloride in the preparation to increase the stability.

In addition, it is recommended to enable the cement due to the solidification facilitating composition of the present invention in minor amounts, preferably small amount of ferric chloride (FeCl _{3 ·} 6H ₂ O), which cement toxicity in the process of solidifying a high PH coagulation range . Cement is contained and can be applied to rain of 10mm or less, and it is recommended that it is permanently safe.

In the soil, the polymer organic compound is contained in a large amount in the form of dissolving in the water, so that the ionic group is formed around the soil particle, thereby reacting with ions that interfere with the invasion of calcium ions to form humic acid R-COOH) as well as water molecules around the soil particles. This mechanism narrows the gap between the soil particles, and the soil particles become solidified (or cemented) together with the lowering of the dislocation. As a result, fine particles between the soil particles interfering with the invasion of calcium ions are connected to form aggregation do.

In addition, a hydrate such as calcium silica, which forms an alkaline liquid phase and reacts with hydration of cement, forms a semi-crystalline phase which plays an intermediate role between the soil particles and rapidly grows. In other words, the flowability of the cement paste is lost and the condensation reaction progresses, so that the resistance to the shear strength deformation required for the soil structure is remarkably improved.

The stabilizer comprises 2-7% by weight of potassium, 2-7% by weight of calcium chloride, 0.5-5% by weight of magnesium hydroxide, 2-7% by weight of sodium chloride and 80-90% by weight of water.

The stabilizer improves the water resistance and heat resistance, and if it is mixed in less than 0.5 wt% or more than 5 wt%, its function may be deteriorated.

The loess has advantages such as humidity control ability, far-infrared radiation, heat efficiency, absorption power and antibacterial power, and it is preferable that the loess can be mixed with other compositions to increase the binding force.

Wherein the reinforcing agent is one or more selected from the group consisting of pearlite, glass wool, vermiculite, and natural fiber materials.

If the content of the mineral is less than 1 wt%, it can not perform the function of constant temperature, humidity and deodorization effect, and if it is more than 5 wt%, it may cause difficulty in thickness control.

Next, a method of manufacturing a heat insulating material will be described.

According to a further aspect of the present invention, there is provided a process for producing a pulverized styrofoam comprising the steps of pulverizing waste styrofoam to 2 to 10 mm;

5 to 15 wt% of magnesium hydroxide, 5 to 12 wt% of magnesium chloride, 2 to 7 wt% of calcium chloride, 2.5 to 6.5 wt% of potassium chloride, 2 to 8 wt% of sodium chloride, 10 to 25 wt% of sodium hydroxide, To 40 wt%, active magnesium hydroxide (Mg (OH) 2) 0.5 to 2 wt%, tricarboxylic acid 0.5 to 2 wt%, and water 10 to 25 wt%;

2 to 7% by weight of potassium, 2 to 7% by weight of calcium chloride, 0.5 to 5% by weight of magnesium hydroxide, 2 to 7% by weight of sodium chloride and 80 to 90% by weight of water.

A mixture of 70 to 90% by weight of waste styrofoam, 5 to 15% by weight of cement, 0.5 to 5% by weight of a solidifying accelerator, 0.5 to 5% by weight of a stabilizer, 1 to 10% by weight of a soil and 1 to 5% Stirring the mixture at a speed of 10 to 500 rpm / min for 5 to 30 minutes to prepare a heat insulating material composition;

Compressing the agitated heat insulating material composition to form a desired shape and size; And

And curing the molded heat insulating material composition at room temperature for 60 to 90 hours.

In the present invention, the step (S10) of pulverizing the waste styrofoam is preferably carried out by pulverizing the waste styrofoam into 2 to 10 mm particles.

The reason why pulverized styrofoam is pulverized into particles of 2 to 10 mm in the pulverized styrofoam pulverization process (S10) is that if the size of the pulverized styrofoam is increased to 10 mm or more, even if mixed with cement, vermiculite, hardener, When the pulverized styrofoam is pulverized to a size of 2 mm or less, the coating film is almost removed and the absorption of moisture, fire-retardant and flame-retarded raw materials is more efficient but economical efficiency is lowered.

(A) adding 10 to 25% by weight of water to the mixing tank based on the total composition of the materials to be added at 25 to 32 ° C, (b) then adding potassium hydroxide C) adding 5 to 15% by weight of magnesium hydroxide, 5 to 12% by weight of magnesium chloride, 2 to 7% by weight of calcium chloride, and 10 to 25% by weight of sodium hydroxide. By weight of sodium chloride, 0.5 to 2% by weight of active magnesium hydroxide (Mg (OH) ₂ ) and 0.5 to 2% by weight of tricarboxylic acid, and d ) Mixing the mixture at room temperature for 15 minutes to 1 hour.

In this case, the mixing order of the above-mentioned composition is very important because the potassium hydroxide and sodium hydroxide are first diluted and then diluted with the rest of the material, so that the dilution is well diluted. 10 < / RTI >

The step (S30) of preparing the stabilizer comprises mixing 2-7 wt% of potassium, 2-7 wt% of calcium chloride, 0.5-5 wt% of magnesium hydroxide, 2-7 wt% of sodium chloride, and 80-90 wt% And the mixture is mixed at room temperature for 15 to 60 minutes.

The step S40 of manufacturing the heat insulating material composition comprises 70 to 90 wt% of waste styrofoam, 5 to 15 wt% of cement, 0.5 to 5 wt% of a solidification promoting composition, 0.5 to 5 wt% of a stabilizer, 1 to 10 wt% To 5% by weight is preferably added to a stirrer and stirred at a rate of 10 to 500 rpm / min for 5 to 30 minutes.

In the molding step (S50), it is preferable to compress the agitated heat insulating material composition and mold it into a desired shape and size.

The heat insulating material stirred in the molding step (S50) may be formed in the shape of a triangle, a quadrangle, or the like. The thickness may be preferably 10 mm to 500 mm, and it may be preferable that the size is not limited.

In the curing step (S60), the molded heat insulating material composition is preferably cured at room temperature for 60 to 90 hours.

The curing step (S60) can be cured at 60 DEG C for 20 to 30 hours in order to accelerate the shipment time.

The heat insulating material according to the present invention is excellent in water resistance and strong in acid alkali. In addition, it is preferable that the reinforced insulation material obtained by the composition can be made concrete so that the strength thereof is strong and waterproof.

The heat insulating material according to the present invention is installed in factories, schools or assembled panels to exhibit a high heat insulating effect and can be resistant to water resistance, temperature resistance, constant temperature, humidity, prolonged durability and cracking.

<Examples>

Hereinafter, the present invention will be described more specifically by the following representative examples, but the present invention is not limited in any way by these embodiments.

Example 1: Preparation of magnesium hydroxide

100 Kg of raw limestone was mixed with 20 l of seawater (salinity: 3.5%, water temperature: 30 ° C), diluted in a stainless steel reaction vessel, and reacted for 1 hour to obtain MgO milk. Subsequently, without removing the salt, only the salt and impurities were removed by drying with a drying system to produce 98 Kg of magnesium oxide (MgO (H ₂ O) in the form of milk having a pore size of 4 to 5 microns, For example.

Examples 2 to 7: Preparation of a hardening accelerating composition

First, potassium hydroxide and sodium hydroxide were poured into a mixing container at room temperature for 30 minutes, dissolved in water, reacted, and then the above rest composition was mixed in order to prepare a promoter composition solution. This was used in the following examples. It is recommended that the stock solution prepared as above is diluted with water at a ratio of 1:10.

Composition table according to blending amount    ingredient Example (content, g) 2 3 4 5 6 7 Potassium hydroxide  20  25  30  32  37  40 Sodium hydroxide  25  23  20  17  13  10 Mineral magnesium hydroxide   5   8  10  12  13  15 Magnesium chloride  12  11  10   8   7   5 Potassium chloride   2   3   5   5   6   7 Calcium chloride   6.5   5   4   4   3   2.5 Sodium chloride   2   3   5   6   7   8 Active magnesium hydroxide   0.5   0.6   One   1.3   1.5   2 Tri-carboxylic acid   2   1.4   One   0.7   0.5   0.5 water  25  20  14  14  12  10

The composition for accelerating the solidification according to the above Example 3 was submitted to the MSDS test institute in Yongin-si, Gyeonggi-do, and the test results as shown in the following Table 2 were obtained.

 Item Test result Test Methods  condition  Solid (powder, 20 &lt; 0 &gt; C) Note for KHMSCA  flash point Non-occurrence at 110 ℃ or lower KS M ISO 3679: 2003  Melting point > 300 ° C KSM 1071-1: 2007  pH 7.5 to 8.5 KS I ISO 10390: 2005  Weight (Apparent) 1.100 (20 캜) KS M 0602: 2005  Water solubility Water-insoluble (20 ° C) Note for KHMSCA

Example 8: Preparation of insulation

As shown in the following Table 3, the waste styrofoam, cement, the solidification-promoting composition of Example 3, the stabilizer, the loess and the enhancer were put into a stirring device at a composition ratio and stirred at a speed of 10 to 500 rpm / min for 5 to 30 minutes The heat insulation, flame retardancy, durability and water resistance were measured after curing for 72 hours. The results are shown in Table 4.

Composition table according to blending amount ingredient
Example (content:% by weight)
8-1 8-2 8-3 Waste styrofoam 70 80 90 cement 15 10 5 Composition for promoting solidification 0.5 5 2 Stabilizer 5 2 0.5 ocher 4.5 2 One Enhancer 5 One 1.5

Experimental Example  : Physical properties of insulation

The heat insulating materials prepared in Examples 8-1, 8-2 and 8-3 were heat-treated in accordance with KS F 2271, KS M ISO 4898, and KS M ISO 6187 in accordance with the heat resistance, flame retardancy, durability, And the average value thereof is shown in Table 4 below.

Test data Test Items Example 8-1  Example 8-2  Example 8-3 Heat resistance ◎ ◎ ◎ Flammability ◎ ◎ ◎ durability ◎ ◎ ◎ Water resistance ◎ ◎ ◎

?: Excellent,?: Good,?: Bad

As shown in Table 4, it was confirmed that the heat insulating material formed with the content ratio satisfying the heat insulating material composition of the present invention was excellent in heat resistance, flame retardancy, durability and water resistance.

Claims (5)

A stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer, a stabilizer,
The composition for accelerating the solidification comprises 5 to 15 wt% of magnesium hydroxide, 5 to 12 wt% of magnesium chloride, 2 to 7 wt% of calcium chloride, 2.5 to 6.5 wt% of potassium chloride, 2 to 8 wt% of sodium chloride, 10 to 25 wt% By weight of calcium hydroxide, 20 to 40% by weight of potassium hydroxide, 0.5 to 2% by weight of active magnesium hydroxide (Mg (OH) ₂ ), 0.5 to 2% by weight of tricarboxylic acid and 10 to 25%
Wherein the stabilizer comprises 2-7% by weight of potassium, 2-7% by weight of calcium chloride, 0.5-5% by weight of magnesium hydroxide, 2-7% by weight of sodium chloride and 80-90%
Wherein the reinforcing agent is one or more selected from the group consisting of pearlite, glass wool, and natural fiber materials. delete Pulverized styrofoam powdering process for pulverizing waste styrofoam to 5 to 10 mm;
5 to 15 wt% of magnesium hydroxide, 5 to 12 wt% of magnesium chloride, 2 to 7 wt% of calcium chloride, 2.5 to 6.5 wt% of potassium chloride, 2 to 8 wt% of sodium chloride, 10 to 25 wt% of sodium hydroxide, By weight of at least one member selected from the group consisting of magnesium hydroxide (Mg (OH) ₂ ), magnesium hydroxide (Mg (OH) fair;
2-7% by weight of potassium, 2-7% by weight of calcium chloride, 0.5-5% by weight of magnesium hydroxide, 2-7% by weight of sodium chloride and 80-90% by weight of water at room temperature for 15-60 minutes to prepare a stabilizer A stabilizer manufacturing process;
A composition comprising 70 to 90% by weight of waste styrofoam, 5 to 15% by weight of cement, 0.5 to 5% by weight of a solidifying accelerator composition, 0.5 to 5% by weight of a stabilizer, 1 to 10% by weight of soil, and pearlite, 1 to 5% by weight of an enhancer selected from one or more selected from the group consisting of at least one selected from the group consisting of an epoxy resin, an epoxy resin, and an epoxy resin is stirred at a rate of 10 to 500 rpm for 5 to 30 minutes to produce a heat insulating material composition;
A molding step of compressing the agitated heat insulating material composition and molding it into a desired shape and size; And
And a curing step of curing the molded heat insulation composition at 50 to 70 DEG C for 20 to 30 hours,
The solidification promoting composition manufacturing process
a) adding 10 to 25% by weight of water to the mixing tank based on the total composition of the charged materials at 25 to 32 DEG C,
b) Subsequently, 20 to 40% by weight of potassium hydroxide and 10 to 25% by weight of sodium hydroxide are added to the tank and diluted for 15 minutes to 1 hour,
c) Thereafter, 5 to 15% by weight of magnesium hydroxide, 5 to 12% by weight of magnesium chloride, 2 to 7% by weight of calcium chloride, 2.5 to 6.5% by weight of potassium chloride, 2 to 8% by weight of sodium chloride, ) ₂ ) 0.5 to 2% by weight, and tricarboxylic acid 0.5 to 2% by weight, and
d) method for producing a heat insulating material, characterized by comprising the step of mixing the mixture for 15 minutes to 60 minutes at room temperature. delete delete

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