KR100820931B1 - The high solid mastic waterproofing material using at room temperature and method for producing thereof - Google Patents

Abstract

A high-solid content mastic waterproofing material for applications at room temperature is provided to ensure excellent workability, high-temperature resistance in the summer season, low-temperature elasticity in the winter season and excellent compliance with cracks in concrete. A high-solid content mastic waterproofing material for applications at room temperature comprises: 30-72 wt% of processing oil; 20-50 wt% of inorganic fillers; 5-30 wt% of asphalt; 1-10 wt% of a modifier; 1-10 wt% of a viscosity adjusting agent; 0.7-5 wt% of fibers; and 0.3-1 wt% of a compatibilizer. The fiber is at least one selected from the group consisting of polyester fibers, polyethylene fibers, polypropylene fibers, cellulose fibers, fiber glass, sepiolite and nylon fibers.

Description

{The high solid mastic waterproofing material using at room temperature and method for producing}

The present invention relates to a high solids room temperature mastic waterproofing material and a method for manufacturing the same, and more particularly to manufacturing a high solids room temperature mastic waterproofing material by dispersing an inorganic filler, asphalt, fiber, modifiers, etc. in process oil. By doing so, not only the construction is easy but also the summer high temperature durability and winter low temperature elasticity is maximized.

In general, when rainwater or groundwater penetrates civil structures such as rooftops of rooftops, upper part of underground parking lots, underground exterior walls, subways, underground roadways, cavities, etc., the bond strength of concrete materials decreases and void cracks occur due to temperature changes. Waterproofing is a very important factor in concrete structures because it leads to a decrease in the lifespan of civil engineering structures. Therefore, waterproof construction is required for concrete structures.

Materials used in the waterproof construction include sheet waterproofing material, coating film waterproofing material and mastic waterproofing material.

First of all, the sheet waterproofing material is fused by using a heating torch at the time of construction, so the construction is very demanding and the construction time is very long. Since it leaks in other places along with the damaged part by moving along the space of, the defect point cannot be found and there is a disadvantage that the entire waterproof layer needs to be rebuilt.

And as the coating film waterproofing material is sprayed and rollers, the construction is simple and the construction speed is fast. However, the hardening or drying process is required after the construction, and the air becomes considerably longer. In the case of the aqueous coating waterproofing material, there is a problem that it cannot be applied in winter. . In addition, the waterproof coating layer cured and dried after the coating waterproofing material is fixed to the adhered surface of the structure, so that if a crack occurs in the structure, the waterproof layer does not stretch along the crack and is torn, so that the crack cannot be followed and leaks occur.

In addition, the mastic waterproofing material must be applied by spreading all the waterproofing materials with manpower, so that the construction properties are not good and the thickness of the waterproofing layer is not uniform, and the construction period is prolonged and the cost increases due to the manpower construction. In addition, the waterproofing material flows down due to the high temperature after the construction of the vertical wall in summer, and the thickness of the upper and lower waterproof layers is not uniform, and the attached sheet flows down even when the protective sheet is installed.

In addition, the existing mastic waterproofing material has a solid content of 70-85% by weight, so when the volatiles fly away after construction of the waterproofing material, the fluidity peculiar to the mastic waterproofing material disappears and hardens, resulting in very low temperature performance and traceability to structural cracking. It is weakened and there are disadvantages such as water leakage due to breakage of the waterproof layer due to winter season and structure cracks.

Therefore, the present inventors invented the 'spray rubberized asphalt mastic waterproofing and its manufacturing method' of the domestic patent application No. 10-2005-112153 to solve the above problems, the spray rubberized asphalt mastic waterproofing is a waterproof material Expensive spray equipment is required to construct the concrete, as well as the heating of the material is necessary because it sprays at a high temperature, making it difficult to waterproof the narrow or complex structures that the spray construction machine cannot enter. There is a risk of fire, there is a disadvantage that not only bad odor due to steam generated from the material, but also workers can be burned.

Therefore, an object of the present invention is to solve the problems of the conventional mastic waterproofing material, by dispersing inorganic fillers, asphalt, fiber, modifiers, etc. in the process oil to produce a mastic waterproofing material for high solids room temperature construction It can be installed at room temperature and is easy to install, and has excellent high temperature durability in winter and low temperature elasticity in winter. Also, it has excellent heat resistance and flowability. The present invention provides a high solids room temperature waterproofing mastic waterproofing material and a method of manufacturing the same, which are easy to find and repair a defect site after construction.

Asphalt mastic waterproofing material for high solids room temperature construction of the present invention for achieving the above object, process oil 30 to 72% by weight, inorganic filler 20 to 50% by weight, asphalt 5 to 30% by weight, modifier 1 to 10% by weight %, 1 to 10% by weight of viscosity modifier, 0.7 to 5% by weight of fiber, and 0.3 to 1% by weight of compatibilizer.

And the fiber is characterized in that one or two selected from the group consisting of polyester fibers, polyethylene fibers, polypropylene fibers, cellulose fibers, fiber glass, haemulseok, nylon fibers.

Manufacturing method according to the invention,

A primary dispersion step of uniformly dispersing 5-30% by weight of asphalt and 1-10% by weight of modifier to 30-72% by weight of process oil at 160-200 ° C;

A second dispersion step of uniformly dispersing by adding 1 to 10% by weight of a viscosity modifier to the primary dispersion,

A third dispersion step of uniformly dispersing 0.3 to 1% by weight of a compatibilizer into the secondary dispersion;

And a fourth dispersion step of uniformly dispersing the inorganic filler by adding 20-50 wt% of inorganic filler and 0.7-5 wt% of fiber.

And the viscosity modifier is added with the asphalt and the modifier, characterized in that the first dispersion step and the second dispersion step is one step.

In addition, the temperature of the dispersion is maintained at 160 to 200 ° C. during the first, second, and third dispersion steps, and the fourth dispersion step is characterized by uniform dispersion of inorganic fillers and fibers at room temperature into the third dispersion. do.

According to the high solids room temperature mastic waterproofing material and the manufacturing method of the present invention, by dispersing an inorganic filler, asphalt, fiber, modifier, etc. in process oil to produce a high solids room temperature mastic waterproofing material, Unlike the conventional mastic waterproofing material whose properties change accordingly, it has excellent elasticity and adhesive strength even after a long time after construction, shows excellent elasticity at low temperature, and does not flow down at high temperature to form a very excellent waterproofing layer. Excellent flowability provides useful effects, such as being able to form a constant coating film thickness without falling down during construction of the vertical wall area.

In addition, it is possible to install at room temperature, so that the construction is not only simple, but also complicated and difficult parts can be easily installed, and additional curing time is not required. do.

In addition, it can maintain excellent flexibility and elasticity even at low temperatures, thereby exhibiting excellent followability due to concrete cracks, and provides effects such as facilitating the discovery and repair of defects after construction.

Hereinafter, the present invention will be described in detail with reference to the drawings. In addition, the compounding ratio described below is based on 100% by weight of mastic waterproofing material.

First, each composition used in the present invention and the mixing ratio thereof will be described.

Process oil used in the present invention is to ensure the waterproofing performance and fluidity as the main material constituting the waterproofing material, the kind of petroleum-based, coal-based, vegetable-based oils can be used, as petroleum and coal-based oil Aromatic, naphtan, paraffin-based, etc. may be used, and as the vegetable oil may be used linseed oil, soybean oil, linseed oil, rice bran oil and the like. The process oil is blended in 30 to 72% by weight, which means that if the blending ratio of the process oil is less than 30% by weight, the viscosity of the waterproofing material itself becomes high, making the construction very difficult, and the workability is poor. This is because the physical properties of the product are not sufficiently secured due to the poor effect of the modification, and the physical properties required for heat resistance stability and waterproofing are reduced, making it difficult to use as a waterproofing material.

In addition, the inorganic filler is used to increase the cost-saving mill physical strength of the waterproofing material, such as calcium carbonate (heavy coal, hard coal), talc, mica, clay, bentonite, slaked lime, cement, needle-like inorganic powder (wallastonite, pangel) Or more) may be used. The inorganic filler is blended with 20 to 50% by weight, which means that when the blending ratio of the inorganic filler is less than 20% by weight, the cost reduction and strength increase effect is very low, making it difficult to manufacture a product having excellent price competitiveness and when the product exceeds 50% by weight. This is because the viscosity of the product is increased and the adhesive strength is weakened, so that a product having excellent physical properties cannot be manufactured.

The asphalt is for waterproofing and rustproofing performance, and the type thereof is not limited. And when the asphalt is blended with 5 to 30% by weight, when the blending ratio of the asphalt is less than 5% by weight can not exhibit the inherent waterproof and rust-proof performance, if it exceeds 30% by weight the low temperature characteristics are weakened and relative This is because the amount of the modifier and the oil is small, so fluidity and durability are also weakened.

And the modifier is to reinforce the elasticity, viscosity, durability, etc. of the waterproof material, the type of rubber, thermoplastic elastomer or a mixture thereof is used, styrene-butadiene-styrene block copolymer (SBS), styrene-isoprene Rubber (SIS), styrene-butadiene rubber (SB), styrene-butadiene rubber latex (SBR), styrene-ethylene-butadiene-styrene rubber (SEBS), ethyl-vinyl-acetate (EVA), atactic polypropylene ( APP), amorphous polyolefin (APAO), polyethylene (PE), polypropylene (PP), petroleum resin (C5, C9, C5-C9 copolymer), natural resin (rosin, ester), coumarone resin, waste tire Powder (30-120 mesh thing) etc. can be used. The modifier may be used alone as well as mixed use.

In particular, the waste tire powder is preferably used in the particle size of 30 to 120 mesh (mesh) bar, which means that when the particle size of the waste tire powder is less than 30 mesh, the diameter of the particles is too large, not easy to process the modification effect This is because there is a disadvantage in falling, and if it exceeds 120 mesh, it is difficult to manufacture the waste tire powder, so that the price rises as well as the supply is not smooth.

When the modifier is blended in an amount of 1 to 10% by weight, when the blending ratio of the modifier is less than 1% by weight, the effect as a modifier is very weak, so that the heat resistance and cold resistance are not sufficiently exhibited. This is because the construction performance is deteriorated and the use of excess modifiers increases the unit price of the product, which results in a weakening of the product's competitiveness.

In addition, the viscosity modifier is to ensure the construction performance of the waterproofing material and to strengthen the heat resistance, the kind of paraffin wax, micro wax, polyethylene wax, polypropylene wax, amide wax, metal stearate, dioctyl phthalate, di Various plasticizers, such as butyl phthalate, can be used, and as asphalt, straight asphalt, blown asphalt, trininard asphalt, natural asphalt, such as gilsonite, etc. can be used. The viscosity modifier can be used alone as well as mixed use.

When the viscosity modifier is blended in an amount of 1 to 10% by weight, if the blending ratio of the viscosity modifier is less than 1% by weight, the effect is insignificant and the viscosity cannot be properly adjusted. If the viscosity is more than 10% by weight, the elasticity and fluidity of the product may be adversely affected. Because it's going crazy.

In addition, the fiber (fiber) is to enhance the physical strength of the product, and to increase the adhesive strength and bonding strength, the type of polyester fiber, the fiber length of 0.5 ~ 20mm, polyethylene fiber, polypropylene fiber, cellulose fiber, fiber bar Glass, a calcite stone, nylon fiber, etc. can be used. The fiber can be used alone as well as mixed.

When the fiber is blended at 0.7 to 5% by weight, if the blending ratio of the fiber ratio is less than 0.7% by weight, the adhesive and bonding strength of the product cannot be sufficiently secured, and an excellent product cannot be produced. This is because the viscosity is very high and the price is rising, making the construction of the product difficult and the price competitiveness not be good.

Compatibilizers are used to maximize the compatibility between asphalt and process oils and modifiers.The types are PT-423, PT-743, and R & C's RC-001, RC-003, RC of Hudson Asphalt Co., Ltd. -004 may be used, and other polyphosphoric acid and metal salt inorganic acids may be used. The compatibilizer may be used alone as well as mixed use.

Since the compatibilizer is blended at 0.3 to 1.0% by weight, the compounding ratio of the compatibilizer is less than 0.3% by weight, and the effect of the compatibilizer is insignificant.

Asphalt mastic waterproofing material for high solids room temperature construction of the present invention blended at the above-mentioned mixing ratio is 30 to 72% by weight of process oil, 20 to 50% by weight of inorganic filler, 5 to 30% by weight of asphalt, and 1 to 10% by weight of modifier. %, 1 to 10% by weight of viscosity modifier, 0.7 to 5% by weight of fiber, and 0.3 to 1% by weight of compatibilizer, and the solid content is 99% or more to have excellent workability and physical properties.

Hereinafter, a method of manufacturing the asphalt mastic waterproofing material for high solids room temperature construction of the present invention will be described. Substances used in the manufacturing method of the present invention and their dosages have already been described above sufficiently, and thus description thereof will be omitted.

First, asphalt and modifiers are added to the process oil at 160 to 200 ° C. and uniformly dispersed. At this time, if the temperature of the process oil is less than 160 ℃ temperature is too low, it is difficult to disperse the modifier, and if the temperature exceeds 200 ℃, the physical properties of the modifier is changed, it is difficult to secure the desired properties, the temperature is 160 ~ 200 ℃ To keep it.

When the primary dispersion is completed as described above, the primary dispersion becomes a gel-like substance, and the second dispersion is uniformly dispersed by adding a viscosity modifier to the dispersed primary dispersion, and then a compatibilizer is added to the third uniform dispersion. do.

When the third dispersion is completed, the inorganic filler and the fiber are added to the fourth uniform dispersion to complete the manufacture of the waterproofing material.

In each dispersion step, it is easy to disperse by maintaining the temperature of the process oil from 160 to 200 ℃ from the beginning to the third dispersion step, that is, compatibilizing agent, and the inorganic filler and fiber bar without further heating in the fourth dispersion. Disperse by adding

In addition, the viscosity modifier added during the secondary dispersion may be prepared in three stages of primary dispersion, tertiary dispersion, and quaternary dispersion by simultaneously adding asphalt, a modifier, and a viscosity modifier during primary dispersion.

In addition, the inorganic filler may also be added and dispersed together during the first dispersion, such as a viscosity modifier, and may be dispersed by simultaneously adding a modifier, asphalt, a viscosity modifier, and an inorganic filler to the process oil, and then dispersing the compatibilizer sequentially. This does not limit the order of introducing the inorganic filler and the viscosity modifier.

And the reason for dispersing in turn over the fourth order, as described above, because the modifier is best dispersed in the process oil first, and then dispersed first, and then by adding asphalt and viscosity modifier to minimize the production time of the waterproofing material and the manufacturing cost This is to reduce the cost.

The compatibilizer may be added after the modifier is sufficiently dispersed and aged to maximize the effect. Therefore, the compatibilizer is preferably added after the modifier is dispersed.

The waterproofing material of the present invention manufactured as described above is a mastic waterproofing material that is applied to civil structures such as the roof of a building, the upper part of an underground parking lot, an underground outer wall, a subway, an underground driveway, a joint pit, and exhibits excellent fluidity and adhesion and excellent elasticity at low temperatures. It does not flow down at high temperature and can form a very good waterproof layer.

In addition, it prevents the penetration of water and moisture, and is not affected by alkali or acidic substances, and has excellent elasticity and adhesion to the adherend, so that there is almost no volatile matter and thus has a permanent preservation property in a jelly state at room temperature.

Hereinafter, the present invention will be described in more detail with reference to the following examples.

Hereinafter, the present invention will be described in more detail with reference to the following examples.

First, the waterproofing material of the present invention was prepared by the formulations shown in Tables 1 and 2 below.

Compounding ratio according to Example 1 division Compounding ratio (% by weight) Remarks Process oil 35.6 Aromatic Oil Modifier 2 SBS, Linear type Fiber 2 3mm polyester Mineral filler 35 Calcium carbonate Viscosity modifier 5 Micro wax asphalt 20 AP-3 Compatibilizer 0.4 PT-423

Compounding ratio according to Example 2 division Compounding ratio (% by weight) Remarks Process oil 41.7 Paraffin oil Modifier 2 SBS, Linear type 5 Waste Tire Powder (80mesh) Fiber 3 polyester Mineral filler 30 Calcium carbonate Viscosity modifier 3 PE Wax asphalt 15 AP-3 Compatibilizer 0.3 RC-003

And Comparative Examples of the above Examples were prepared as Tables 3 and 4.

Compounding ratio according to Comparative Example 1 division Compounding ratio (% by weight) Remarks Process oil 20 Aromatic oils Modifier 10 SBS, Linear type 6 Waste Tire Powder (80mesh) Fiber 6 polyester Mineral filler 5 Calcium carbonate Viscosity modifier 8 PE Wax asphalt 43 AP-3 Compatibilizer 2 PT-423

Compounding ratio according to Comparative Example 2 division Compounding ratio (% by weight) Remarks Process oil 75 Paraffin oil Modifier One APP 5 Waste Tire Powder (80mesh) Fiber One polyester Mineral filler 15 Calcium carbonate Viscosity modifier 0.5 PE Wax asphalt 2.2 AP-3 Compatibilizer 0.3 PT-423

Physical properties such as specific gravity, heat flow resistance, low temperature flexibility, and viscosity according to the above Examples and Comparative Examples were measured and shown in Table 5 together with the conditions.

Physical property measurement result of each Example and Comparative Example division unit Exam conditions standard Example 1 Example 2 Comparative Example 1 Comparative Example 2 importance - 25 ℃ 1 or more 1.23 1.20 1.32 0.92 Heat flow resistance mm 60 ℃, 24hr, left vertical 5 or less 0 0 0 5 or more Low temperature flexibility - -20 ℃, 180 ° bending No crack Pass Pass Pass Pass Nonvolatile matter wt% 105 ℃, 3hr Over 99 99.9 99.8 99.6 99.7 Viscosity CPS 100 ℃ Less than 5000 2500 3500 More than 20000 1600

As can be clearly seen from the above experimental results, the waterproofing materials of Examples 1 and 2 of the present invention were confirmed that the specific gravity, heat flow resistance, low temperature flexibility, viscosity, etc. are all satisfied with the specification. However, in the case of Comparative Examples 1 and 2, the viscosity of the required physical properties of the product is too high, it is impossible to install at room temperature, it was found that the heat resistance is manufactured to a product that does not meet the specifications.

As described above, the present invention has been described with reference to the above embodiments, but it is not necessarily limited thereto, and various modifications may be made without departing from the scope and spirit of the present invention.

Claims (5)

 30 to 72% by weight of process oil, 20 to 50% by weight of inorganic filler, 5 to 30% by weight of asphalt, 1 to 10% by weight of modifier, 1 to 10% by weight of viscosity modifier, 0.7 to 5% by weight of fiber and compatibilizer 0.3 to Mastic waterproofing material for high-solid-temperature room temperature construction, comprising 1% by weight. The method of claim 1, Wherein the fiber is a polyester fiber, polyethylene fiber, polypropylene fiber, cellulose fiber, fiber glass, haemulseok, nylon fibers, characterized in that at least one selected from the group consisting of two or more kinds of high-temperature room temperature mastic waterproofing material. A primary dispersion step of uniformly dispersing 5-30% by weight of asphalt and 1-10% by weight of modifier to 30-72% by weight of process oil at 160-200 ° C; A second dispersion step of uniformly dispersing by adding 1 to 10% by weight of a viscosity modifier to the primary dispersion, A third dispersion step of uniformly dispersing 0.3 to 1% by weight of a compatibilizer into the secondary dispersion; 20 to 50% by weight of inorganic fillers, 0.7 to 5% by weight of the filler in the tertiary dispersion, the method of producing a mastic waterproofing material for a solid content at room temperature, characterized in that it comprises a fourth dispersion step of uniform dispersion. The method of claim 3, wherein The viscosity modifier is added together with the asphalt and the modifier, the method of producing a mastic waterproofing material for high solids room temperature construction, characterized in that the first and second dispersion step is one step. The method according to claim 3 or 4, The first, second, and third dispersion step is a manufacturing method of the mastic waterproof material for high solids room temperature construction, characterized in that the temperature of the dispersion is maintained at 160 ~ 200 ℃.