KR100933351B1 - Composition for waterproof coating material - Google Patents

Abstract

PURPOSE: A lower temperature waterproof coating composition is provided to improve the reproducibility of the coating thickness and to lower the manufacturing cost without the deterioration of the waterproofness even in case of severe cold. CONSTITUTION: A lower temperature waterproof coating composition comprises asphalt 39.3 - 75.4 weight%, an asphalt modifier 2.9 - 8.8 weight%, a dispersant 12.2 - 25.8 weight%, a tensile strength intensifier 1.0 - 3.6 weight%, a room temperature curing agent or adhesion preserver 3.0 - 12.3 weight%, a filler 5.5 - 10.2 weight%, and a stabilizer. The composition has a specific gravity of 1 or less, and the tensile strength intensifier is the celluloid having a specific gravity of 0.3 - 0.8.

Description

Composition for waterproofing coating material

The present invention relates to a waterproof coating material composition, and more particularly, to a waterproof coating material composition having a low specific gravity and which can be used at low temperatures.

In concrete structures, bending moments or vibrations are generated due to static and dynamic loads, and cracks occur, and delamination due to neutralization and aging occurs. In addition, rainwater causes cracks or cracks on the surface of the concrete, infiltrates the reinforcing steel bars, and promotes cracking of the concrete, and cracks in the concrete become structural problems, which shortens the lifespan of civil engineering structures.

Generally, the waterproofing material used as a protection system for building civil engineering structures includes sheet type waterproofing material, coating type waterproofing material and penetration type waterproofing material according to the construction method. The construction method using the double penetration type waterproofing material is a method used in the past for the waterproofing construction of concrete, and is mainly a method of dissolving silicon in a strong solvent and using it as a liquid penetration waterproofing agent. However, the construction method using the penetration type waterproofing material has low resistance to cracking, and has not been used recently because it does not penetrate into high strength concrete of 350kgf / ㎠. In addition, although the sheet-type waterproof construction exhibits a uniform and excellent waterproof effect, the surface is not uniform due to high cost and difficult connection work between sheets in the construction process, and the waterproof function may be lost due to leakage of the connection part.

The most representative of the waterproof coating material is asphalt waterproofing material. A big feature of the asphalt waterproofing material is that it melts and melts the solid asphalt at normal temperature, and then applies it as a liquid or roofing to create an infinitely waterproof layer on site. Melted asphalt has the property of hardening again as the temperature decreases so that the ground or roofing can be glued together, so it does not require a long time like other adhesives. Asphalt waterproofing material can be largely divided into hot and cold methods depending on whether the asphalt is heated or not. The general asphalt waterproofing material is produced by extracting various oils from crude oil and blowing and oxidizing it by blowing air on the straight asphalt, which is the remaining pure asphalt. Since physical properties are similar to that of straight asphalt, there are disadvantages in that adhesion and cohesion are weak.

The waterproof asphalt boiled during the waterproof construction is constructed by laminating roofing and felt made of paper as a reinforcement material, so that there is an advantage that it can be compensated to some extent in the next lamination construction even if a construction mistake occurs. However, waterproof asphalt should be heated and applied at high temperature (more than 180 ℃), so it should be equipped with equipment suitable for this, because the temperature should be maintained over 200 ℃ in order to maintain usable temperature of 180 ℃ ~ 190 ℃. Due to the occurrence of environmental pollution, physical properties are destroyed, the waterproofing performance is reduced, oxidation is not only fast progress, but also has the problems of safety accidents such as fire burns.

In order to solve the above problems, a modified asphalt was prepared by dissolving straight asphalt at 180 ° C., then mixing and dissolving synthetic rubber, followed by mixing an inorganic filter (silica sand). The modified asphalt has the advantage of improving the low temperature by strengthening the adhesion and cohesion of the straight asphalt or waterproof asphalt, and has the advantage of improved flexibility by adding the performance of synthetic rubber. The modified asphalt is used in the same method as the waterproof asphalt is laminated construction with the melted polyester non-woven fabric or coated under the asphalt waterproof sheet to attach the waterproof sheet. In this case, low temperature and flexibility, which are disadvantages of waterproof asphalt, were added to improve waterproof performance. However, the viscosity of the waterproof asphalt is higher than that of waterproof asphalt. There is a problem that the risk of occurrence of safety accidents such as physical property destruction of asphalt, deterioration of waterproofing performance, burns, etc. occurs.

In addition, since the coating material composition has a specific gravity of 1 or more, it is evaluated by weight at the time of transaction, and thus there is a problem in that a price deviation occurs depending on the specific gravity and the thickness of the coating film is not constant after the coating film is formed. In other words, the composition having a specific gravity of 1 or more has the same weight depending on the problem of changing the specific gravity depending on the production lot, so the volume of the waterproof layer varies depending on the lot. There is a difficulty. In the case of the general coating material, the specific gravity is 1.14 to 1.20, and the general atalt coating material is known as 1.10 to 1.30 although there are variations depending on the use of the filler. In addition, in the case of waterproof asphalt (blon asphalt), 1.03 to 1.10 and the urethane-based coating material is known as 1.37.

In addition, the conventional coating layer has no abnormality in the coating layer within -10 ℃, but because the coating layer is formed outdoors, if there is a long period of exposure to the cold weather there is a problem that a leak occurs.

An object of the present invention to solve the above problems is to provide a coating material composition with improved low temperature.

Another object of the present invention is to provide a coating material composition which can be formed with a specific gravity of 1 or less.

Still another object of the present invention is to provide a coating material composition which can be formed at a softening point of about 100 ° C.

In order to achieve the above object, the present invention provides a coating material composition, including asphalt, asphalt modifiers, dispersants, elongation strength enhancers, room temperature hardeners or adhesive holding agents, fillers, stabilizers; Among the composition components, asphalt is 39.3 to 75.4% by weight, asphalt modifier is 2.9 to 8.8% by weight, dispersant is 12.2 to 25.8% by weight, elongation strength enhancer is 1.0 to 3.6% by weight, room temperature hardener or adhesive retaining agent is 3.0 to 12.3 weight %, Fillers provide a low temperature coating material composition containing 5.5 to 10.2% by weight.

In another aspect, the present invention provides a low-temperature coating material composition wherein the asphalt modifier is SBS-SIS rubber.

In another aspect, the present invention provides a low-temperature coating material composition wherein the dispersant is a process oil, in particular hydrocarbon-based.

The present invention also provides a low temperature coating material composition wherein the reinforcing agent is celluloid.

In another aspect, the present invention provides a low-temperature coating material composition wherein the curing agent to the adhesive retainer is at least one selected from the group consisting of sodium rosin, sodium amine acid, sodium oleate.

In another aspect, the present invention provides a low-temperature coating material composition wherein the filler is one or more selected from the group consisting of calcium carbonate, talc or bonded carbon dioxide to the limestone or ice tin.

The present invention also provides a low temperature coating material composition having a softening point of 81 to 102 ℃.

In another aspect, the present invention provides a low-temperature coating material composition having a specific gravity of 0.86 to 0.96.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, it should be noted that in the drawings, the same components or parts denote the same reference numerals as much as possible. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

As used herein, the terms "about", "substantially", and the like, are used at, or in close proximity to, numerical values when manufacturing and material tolerances inherent in the meanings indicated are intended to aid the understanding of the invention. Accurate or absolute figures are used to assist in the prevention of unfair use by unscrupulous infringers.

The coating material composition according to the present invention may include asphalt, asphalt modifier, dispersant, elongation strength enhancer, room temperature hardening agent or adhesive holding agent, filler, stabilizer. Among the composition components, asphalt is 39.3 to 75.4% by weight, asphalt modifier is 2.9 to 8.8% by weight, dispersant is 12.2 to 25.8% by weight, elongation strength enhancer is 1.0 to 3.6% by weight, room temperature hardener or adhesive retaining agent is 3.0 to 12.3 weight %, Filler may comprise 5.5 to 10.2% by weight.

Asphalt in the composition according to the present invention may be used, such as straight asphalt, blown asphalt, natural asphalt, asphalt compound, but preferably used asphalt. There are five types of the straight asphalt from AP-1 to AP-5, preferably using AP-3.

The asphalt modifier may be SBS to SIS rubber. Preferably SBS-based rubber can be used. The SBS to the SIS have a specific gravity of 1 or less, which is 0.6121 for SBS and 0.6808 for SIS. The molecular weight is SBS 54.09 and SIS 68.12. Therefore, SBS-based rubber is characterized by lower specific gravity and molecular weight than SIS-based rubber. This means that the SBS-based rubber has a lower density than the SIS-based rubber, and thus can be mixed and used even at a relatively low temperature. On the other hand it is preferable that the arsenic modifier is included in the 2.9 to 8.8% by weight to form a specific gravity of 1 or less of the final composition.

The dispersant in the composition according to the present invention maintains low temperature construction properties and serves as an aid for waterproof life preservation. The dispersant may be process oil and may comprise 12.2 to 25.8 weight percent. The process oil is preferably using a hydrocarbon carbon. Hydrocarbon system is divided into naphthene system, paraffin system, and aromatic system, and it is possible to control softening point and working temperature according to the input amount. In the case of forming the softening point higher than the normal temperature of the temperate climate, it is preferable to use a naphthene system, and in the cold climate, it is preferable to use a paraffinic system. The process oil can keep the asphalt waterproofing material in a gel (GEL) state at temperatures below the softening point and add elasticity and flexibility.

The reinforcing agent serves as an extension strength enhancer and further serves to form the specific gravity of the composition according to the invention to 1 or less. Non-limiting examples of the reinforcing agent may be celluloid, which has a specific gravity of about 0.3 to 0.8. For this reason, in view of the relationship with the specific gravity of the composition of the present invention, the reinforcing agent is preferably included 1.0 to 3.6% by weight.

In the composition according to the present invention, the curing agent to the adhesive maintenance agent may be used without limitation as long as the composition according to the present invention has a low softening point, so long as it is a component that may affect rheological properties, that is, flowability. For example, it may be one or more selected from the group consisting of sodium rosin, sodium amine, sodium oleate. The hardener may reduce the deviation between the melting point and the hardening point of the composition to facilitate temperature casting during operation. On the other hand, the curing agent also serves as a stabilizer that can contribute to the anti-aging and stabilization of physical properties of the finished product. For this reason, the curing agent may include 3.0 to 12.3% by weight.

The filler may be one or more selected from the group consisting of calcium carbonate and talc, or carbon dioxide combined with limestone or ice tin, and may improve alkali resistance, increase absorption, and increase adhesion, and is also involved in the compressive strength of the mixture. . Preferably the filler may comprise 5.5 to 10.2% by weight.

As described above, the coating material composition according to the embodiment of the present invention exhibits stability at minus 20 ° C., and thus has no merit in that the waterproof function is not damaged even in cold weather.

In addition, the composition according to the present invention has a specific gravity of 1 or less, the coating layer is formed to a certain thickness has the advantage of high reproducibility and low manufacturing cost.

The composition according to the present invention is characterized in that the softening point is formed at about 100 ° C and is convenient in workability.

Through the following examples to form the present invention.

Example 1

After forming the composition of AP-3 1000g, SIS rubber 100g, process oil 500ml, celluloid 30g, sodium rosinate 100g, calcium carbonate 150g, the softening point is KS M 2250, penetration is KS M 2252, specific gravity Measured by KS A 0602, solid content by KS F 3211, flow resistance by KS F 3211, heat resistance by KS F 4917 (70 ℃, 5 hours), and low temperature by KS F 4917 (-20 ℃, 30 minutes). . Table 1

subject unit usage Ratio (% by weight) AP-3 g 1000 51.5 SIS g 100 5.2 P.O Ml 500 25.8 Cellaroid g 30 2.0 Sodium Rotate g 100 5.3 Calcium carbonate g 150 10.2 Sum g 1,880 100

Example 2

The composition was the same as in Example 1 except that 1000 g of AP-3 and 80 g of SIS rubber, 400 ml of process oil, 50 g of celluloid, 100 g of sodium rosin, and 200 g of calcium carbonate were formed in the straight asphalt.

subject unit usage Ratio (% by weight) AP-3 g 1000 54.6 SIS g 80 4.4 P.O Ml 400 21.8 Cellaroid g 50 2.7 Sodium Rotate g 100 5.6 Calcium carbonate g 200 10.9 Sum g 1,830 100

Example 3

The composition was the same as in Example 1, except that 1000 g of AP-3 and 150 g of SIS rubber, 400 ml of process oil, 300 g of celluloid, 200 g of sodium rosin, and 100 g of calcium carbonate were formed in the straight asphalt.

subject unit usage Ratio (% by weight) AP-3 g 1000 53.1 SIS g 150 8.0 P.O Ml 400 21.2 Cellaroid g 30 1.6 Sodium Rotate g 200 10.7 Calcium carbonate g 100 5.4 Sum g 1,880 100

Example 4

The composition was the same as in Example 1, except that 1000 g of AP-3 and 100 g of SIS rubber, 500 ml of process oil, 50 g of celluloid, 100 g of sodium rosin, and 200 g of calcium carbonate were formed in the straight asphalt (Table 4).

subject unit usage Ratio (% by weight) AP-3 g 1000 51.3 SIS g 100 5.1 P.O Ml 500 25.6 Cellaroid g 50 2.6 Sodium Rotate g 100 5.2 Calcium carbonate g 200 10.2 Sum g 1,950 100

Example 5

The composition was the same as in Example 1, except that 1000 g of AP-3 and 100 g of SIS rubber, 300 ml of process oil, 30 g of celluloid, 50 g of sodium rosin, and 200 g of calcium carbonate were formed in the straight asphalt (Table 5).

subject unit usage Ratio (% by weight) AP-3 g 1000 59.5 SIS g 100 5.9 P.O Ml 300 17.8 Cellaroid g 30 1.8 Sodium Rotate g 50 3.1 Calcium carbonate g 200 11.9 Sum g 1,680 100

Example 6

The composition was the same as that of Example 1, except that 1000 g of AP-3 and 100 g of SIS rubber, 300 ml of process oil, 30 g of celluloid, 200 g of sodium rosin, and 300 g of calcium carbonate were formed in the straight asphalt.

subject unit usage Ratio (% by weight) AP-3 g 1000 51.8 SIS g 100 5.2 P.O Ml 300 15.5 Cellaroid g 30 1.5 Sodium Rotate g 200 10.5 Calcium carbonate g 300 15.5 Sum g 1,930 100

Example 7

As in Example 1, except that the composition was formed from 1000 g of AP-3 and 50 g of SIS rubber, 300 ml of process oil, 60 g of celluloid, 50 g of sodium rotate, and 250 g of calcium carbonate in the straight asphalt.

subject unit usage Ratio (% by weight) AP-3 g 1000 58.4 SIS g 50 2.9 P.O Ml 300 17.5 Cellaroid g 60 3.6 Sodium Rotate g 50 3.0 Calcium carbonate g 250 14.6 Sum g 1,710 100

Example 8

The same composition as in Example 1, except that 1000 g of AP-3 and 160 g of SIS rubber, 500 ml of process oil, 20 g of celluloid, 100 g of sodium rosin, and 250 g of calcium carbonate were formed.

subject unit usage Ratio (% by weight) AP-3 g 1000 49.2 SIS g 160 7.9 P.O Ml 500 24.6 Cellaroid g 20 1.0 Sodium Rotate g 100 5.0 Calcium carbonate g 250 12.3 Sum g 2,030 100

Example 9

The composition was the same as in Example 1, except that 1000 g of AP-3 and 100 g of SIS rubber, 200 ml of process oil, 40 g of celluloid, 200 g of sodium rosin, and 100 g of calcium carbonate were formed in the straight asphalt (Table 9).

subject unit usage Ratio (% by weight) AP-3 g 1000 60.9 SIS g 100 6.1 P.O Ml 200 12.2 Cellaroid g 40 2.4 Sodium Rotate g 200 12.3 Calcium carbonate g 100 6.1 Sum g 1,640 100

Example 10

The composition was the same as in Example 1, except that 1000 g of AP-3 and 160 g of SIS rubber, 400 ml of process oil, 60 g of celluloid, 100 g of sodium rosin, and 100 g of calcium carbonate were formed in the straight asphalt (Table 10).

subject unit usage Ratio (% by weight) AP-3 g 1000 54.9 SIS g 160 8.8 P.O Ml 400 22.0 Cellaroid g 60 3.2 Sodium Rotate g 100 5.6 Calcium carbonate g 100 5.5 Sum g 1,820 100

* Test result

As shown in Table 11, the composition according to the present invention has a softening point formed between 81 and 102 ° C., thereby enabling low temperature workability, and the specific gravity is 0.86 to 0.96, that is, it is formed to be 1 or less. In addition, it was confirmed that there is no damage to the stability of the waterproof coating even at minus 20 ℃.

division Softening point Trespassing importance Solid content Flow resistance Heat resistance performance Low temperature Example 1 82 94 0.88 99.3 clear 2 clear Example 2 94 114 0.94 99.6 clear 8 clear Example 3 102 86 0.92 99.2 clear One clear Example 4 81 102 0.86 98.9 clear 6 clear Example 5 88 114 0.93 99.1 clear 5 clear Example 6 94 87 0.96 99.7 clear One clear Example 7 84 107 0.91 97.4 clear 8 clear Example 8 88 85 0.94 99.2 clear 3 clear Example 9 92 82 0.96 99.8 clear 2 clear Example 10 82 94 0.88 99.3 clear 2 clear

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

Claims (8)

In the coating material composition, Asphalt, asphalt modifiers, dispersants, elongation strength enhancers, room temperature hardeners or adhesion retainers, fillers, stabilizers; Among the composition components, asphalt is 39.3 to 75.4% by weight, asphalt modifier is 2.9 to 8.8% by weight, dispersant is 12.2 to 25.8% by weight, elongation strength enhancer is 1.0 to 3.6% by weight, room temperature hardener or adhesive retaining agent is 3.0 to 12.3 weight %, The filler is contained 5.5 to 10.2% by weight, the specific gravity is formed to 1 or less, The elongation strength enhancer is celluloid and the specific gravity of the celluloid is 0.3 to 0.8 low temperature coating material composition. The method of claim 1, The asphalt modifier is SBS-SIS rubber-based coating material composition. The method of claim 1, The dispersant is a process oil, low temperature coating material composition. delete The method of claim 1, The curing agent to the adhesive holding agent is a low temperature coating material composition is selected from the group consisting of sodium rosin, sodium amine acid, sodium oleate. The method of claim 1, Wherein the filler is one or more selected from the group consisting of calcium carbonate, talc or low temperature coating material composition that combines carbon dioxide in the limestone or ice tin. The method of claim 1, A low temperature coating material composition having a softening point of 81 to 102 ° C. The method of claim 1, A low temperature coating material composition having a specific gravity of the composition is 0.86 to 0.96.