KR20080013488A - The characterist of water-proof stimulus coating method on woven, non- woven fabric and paper sheet with crm modified asphalt - Google Patents

Abstract

A method for manufacturing a waterproof sheet using asphalt modified with waste tire rubber powder is provided to solve the environmental problem caused by the use of a petroleum-based solvent, and to improve thermal properties, low-temperature properties and durability of asphalt. A method for manufacturing a waterproof sheet using asphalt modified with waste tire rubber powder comprises the steps of: mixing 200 g of waste tire rubber powder(80 mesh) with 40g of process oil and 1000 g of asphalt in an agitator to obtain asphalt modified with waste tire rubber powder having a softening point of 70-80 deg.C; heating and melting the modified asphalt; and spray coating the asphalt onto a polyester sheet(3) to a uniform thickness of 0.1-2.0 mm, stacking another polyester sheet(2) on the top of the resultant coating layer, leveling the sheet by a blade, and cutting the sheet into a desired size.

Description

Waterproofing Paper Using Asphalt Modified With Waste Tire Rubber Powder And Its Manufacturing Asphalt {The characterist of water-proof stimulus coating method on woven, non-woven fabric and paper sheet with CRM modified asphalt}

1 and 2 waterproof paper using asphalt modified with the tire tire rubber powder of the present invention

Figure 3 is a state diagram for producing a waterproof paper using the modified asphalt tire rubber of the present invention

<Description of the symbols in the drawing>

Modified asphalt (1), first nonwoven fabric sheet (2), second nonwoven fabric sheet (3), modified asphalt (4) soaked on the upper surface of the first nonwoven fabric sheet, modified asphalt containing waste tire (5) before coating, blade coating (6),

The present invention is a waste tire rubber powder that can be used for waterproofing applications such as roof waterproofing, underground waterproofing and building walls by applying a predetermined thickness to nylon and polyester sheets, nonwoven sheets, and paper sheets using asphalt modified with tire tires. It relates to a modified asphalt and a method for producing a waterproofing agent using the same.

Conventional asphalt waterproof sheet is generally coated with a high-density film such as polyethylene non-woven fabric as a reinforcing material for waterproofing underground structures and buildings, and coated rubberized asphalt to a certain thickness on the top and bottom, and then based on polypropylene or polyethylene on one side. On the other side, products with siliconized release paper on the other side are mainly used as waterproof sheets. However, rubberized asphalt sheets have recently been used due to their low elasticity, tensile strength and elongation and low durability. There have been many studies to solve the problem of not being used.

For example, Korean Laid-Open Patent Publication No. 10-2006-43935 impregnates a rubberized asphalt melt with a thickness of 1 mm or more on the upper and lower surfaces of a central substrate made of a woven fabric or a nonwoven fabric, and has a rubberized asphalt layer on one side. It is attached to the silica sand to increase the adhesion to the concrete floor, the other side of the rubberized asphalt layer is a mat-type waterproof sheet by bonding a non-woven fabric coated with a polyethylene film layer, and its manufacturing method and construction method are described.

In Korean Utility Model Publication No. 20-1986-1731, kraft paper is adhered to both sides of a central core made by immersing asphalt resin in a tough, tough thin nonwoven fabric, and then a synthetic resin film is opened on the outer surface of the kraft paper thus bonded. Glued roofing paper is disclosed,

Korean Patent Publication No. 10-242728 discloses a rubber main body by means of a mixer or semi-barrier mixer, which is a hermetically sealed mixer, not a method of manufacturing a sheet by heating and liquefying asphalt and mixing and stirring the mixture in a liquid state. Although a method of producing a rubberized asphalt waterproof sheet has been described by mixing and stirring coarse cast material, rubber powder, and recycled rubber while adding asphalt, tackifier, filler, and the like during cooling,

As described above, in the case of using the conventional general asphalt, as a liquid asphalt mixed with petroleum solvent and emulsified, it has been applied to the surface of concrete, cement mortar, iron, etc. to form a film to express a waterproof effect. However, the use of petroleum solvents cause environmental problems, and general asphalt has a low softening point, which causes difficulties in construction due to a decrease in thermal properties. And in the case of winter, the substrate of the concrete is repeatedly expanded and contracted, the problem occurs such that the low temperature characteristics are broken and cracks occur.

In order to solve the above problems, the present invention can solve the environmental problems because it is not necessary to use a petroleum solvent by applying the asphalt modified with the tire tire rubber to the nylon sheet. In addition, since the waste tire rubber powder was used, it was found that by utilizing the viscoelastic properties of the rubber powder, the softening point of the asphalt was increased to improve the thermal characteristics, and also the low temperature characteristics.

It solved the problem of using asphalt, that is, non-environmentally friendly and low thermal property using petroleum solvent, and solved the difficulty of construction. By uniformly applying the asphalt to the nylon sheet, the waste resources can be used once to have the advantage of recycling the resources, and the viscoelastic properties of the rubber powder can be utilized to improve the thermal characteristics and the excellent low temperature characteristics to extend the product life. It is a technical object of the present invention to provide a waterproof paper using a modified asphalt with rubber tire powder, and a method for manufacturing the same and modified asphalt.

In order to achieve the above object, the present invention can be used as a waterproof sheet by applying a predetermined thickness to the woven or non-woven fabric sheet, the paper sheet, asphalt modified with the waste tire rubber, spin-coated asphalt modified asphalt tire with rubber -It is applied to a certain thickness with coating method of rudder, roll co-coater and spray, and it heat-compresses with heat medium such as torch or iron to show adhesion to concrete, cement mortar, steel, etc. At the same time, the present invention relates to a waterproof paper using asphalt modified with waste tire rubber powder expressing waterproof properties, a manufacturing method thereof, and modified asphalt.

In the case of the waste tire rubber powder modified asphalt, the waste tire rubber powder is simply incompatible with each other when it is mixed with asphalt, and the tire tire rubber powder cannot be uniformly dispersed. Difficulties may arise when coating on top.

Therefore, in the present invention, by adding a small amount of process oil (a crude petroleum oil, P-4), it is possible to prevent the dispersibility and increase in viscosity of the waste tire rubber powder.

If the tire tire rubber powder is not uniformly dispersed, some of the tire tire rubber powder is applied less, resulting in poor thermal and low temperature properties. Too much waste tire rubber powder may cause the asphalt to lose adhesion.

As for waterproofing, the characteristics of asphalt are also important. Asphalt is to play the role of adhesive and binder. It should have the role of binder to adhere the waste tire rubber powder to the base material such as concrete or steel and have the property of exerting the self-adhesive force of asphalt.

Asphalt modified with the tire tire rubber powder is uniformly applied on the nylon sheet by spin co-ta, roll co-ta, or spray coating. At this time, the coating method, according to the characteristics of the substrates (nylon sheet, polyester sheet, non-woven fabric sheet, paper sheet) to be used, spin coating, roll coating and spray coating method should be used. When applying here, the modified asphalt was heated and melted between 150 and 200 ° C. and then applied.

As the nonwoven fabric used in the present invention, it is preferable to use a nylon sheet or a polyester sheet. Nylon and polyester have the characteristics of withstanding high temperature and low hygroscopicity at 200 ° C or higher. Withstanding the high temperature of 200 ℃, when the heat applied to the torch or iron during construction can show the advantage of widening the temperature range of the construction. Since the hygroscopicity is low, it is possible to apply heat during construction and reduce the occurrence of bubbles due to moisture during contraction.

After modifying the asphalt modified rubber tires into nylon sheets, the modified asphalt is remelted with a torch or an iron to be bonded to a substrate such as concrete or steel. At this time, it is preferable to use the torch or iron temperature higher by about 10 to 30 ° C than the temperature at which the modified asphalt softens.

Asphalt modified with waste tire rubber powder has a softening point of 70 ~ 80 ℃. If the softening point is more than 80 ℃ low temperature properties, and if the temperature is 70 ℃ or less, the modified asphalt is too sticky during construction, the construction difficulty occurs.

The temperature during construction should be determined by the substrate used and the thickness of the modified asphalt. The softening point of the waste tire powder modified asphalt used in the present invention showed a value of 78 ° C.

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

Example 1

First process (manufacture of modified asphalt)

A modified asphalt is prepared from waste tire rubber powder having a softening point of 70 to 80 ° C by mixing 40 g of process oil (unchanged petroleum, P-4) and 1000 g of asphalt with a stirrer to 200 g of waste tire rubber powder.

2nd process (waterproofing)

Asphalt modified by the waste tire rubber powder prepared in the first step is heated and melted between 150 ~ 200 ℃ and put into a sprayer spray coating on a polyester sheet (second nonwoven fabric sheet 3) 0.1mm ~ After uniform coating with a thickness of 2.0 mm, the polyester sheet (first nonwoven sheet 2) is again placed on the applied top.

The modified asphalt (4) oozed into the polyester sheet (first non-woven fabric sheet (2)) located at the top is fixed (flat) thickness with a blade coating (6), and then cut to a desired size to use waste tire rubber Waterproof paper was prepared using asphalt modified with powder.

Example 2

First process (manufacture of modified asphalt)

A modified asphalt is prepared from waste tire rubber powder having a softening point of 70 to 80 ° C by mixing 40 g of process oil (unchanged petroleum, P-4) and 1000 g of asphalt with a stirrer to 200 g of waste tire rubber powder.

2nd process (waterproofing)

Asphalt modified with the waste tire rubber powder prepared in the first step is heated and melted between 150 ~ 200 ℃ and put into a roll coat, and then a polyester sheet (second nonwoven fabric sheet (3)) to the roll coat Pass through and uniformly apply a thickness of 0.1 mm to 2.0 mm on the surface of the polyester sheet (second nonwoven fabric sheet 3), and then place the polyester sheet (first nonwoven fabric sheet 2) again on the applied top. next,

The modified asphalt (4) oozed into the polyester sheet (first non-woven fabric sheet (2)) located at the top is fixed (flat) thickness with a blade coating (6), and then cut to a desired size and used tire rubber powder To prepare a waterproof paper using asphalt modified with.

Example 3

First process (manufacture of modified asphalt)

A modified asphalt is prepared from waste tire rubber powder having a softening point of 70 to 80 ° C by mixing 40 g of process oil (unchanged petroleum, P-4) and 1000 g of asphalt with a stirrer to 200 g of waste tire rubber powder.

2nd process (waterproofing)

Asphalt modified by the waste tire rubber powder prepared in the first step is heated to melt between 150 ~ 200 ℃ and put into the spin coat, and then the second nonwoven fabric sheet 3 through the spin coat to the second nonwoven fabric After uniformly applying a thickness of 0.1mm to 2.0mm on the surface of the sheet (3), place the first nonwoven fabric sheet (2) again on the applied top,

After modifying (flat) the thickness of the modified asphalt (4) oozed into the first nonwoven fabric sheet (2) located at the upper portion with the blade coating (6), the asphalt is modified into waste tire rubber powder by cutting to a desired size. The used waterproof paper was prepared.

Example 4

First process (manufacture of modified asphalt)

A modified asphalt is prepared from waste tire rubber powder having a softening point of 70 to 80 ° C by mixing 40 g of process oil (unchanged petroleum, P-4) and 1000 g of asphalt with a stirrer to 200 g of waste tire rubber powder.

2nd process (waterproofing)

Asphalt modified by the waste tire rubber powder prepared in the first step is heated to melt between 150 ~ 200 ℃ and put into the spin coat, and then the second nonwoven fabric sheet 3 through the spin coat to the second nonwoven fabric After uniformly coating the surface of the sheet 3 with a thickness of 0.1 mm to 2.0 mm, and then applying the modified modified asphalt (4) to a uniform thickness (flat) with the blade coating 6 as shown in Figure 3, By cutting to size, a waterproof paper using asphalt modified with tire tire rubber powder was prepared.

Example 5

First process (manufacture of modified asphalt)

A modified asphalt is prepared from waste tire rubber powder having a softening point of 70 to 80 ° C by mixing 40 g of process oil (unchanged petroleum, P-4) and 1000 g of asphalt with a stirrer to 200 g of waste tire rubber powder.

2nd process (waterproofing)

The modified asphalt rubber powder produced in the first step is melted by heating between 150-200 ° C. and then poured a predetermined amount on a 0.2-0.5 mm thick sheet of paper, followed by applying the modified asphalt 4 to FIG. 3. After the thickness was constant (flat) with the blade coating (6) as described above, it was cut into a desired size to prepare a waterproof paper using asphalt modified with waste tire rubber powder.

Experimental Example

The waste tire rubber powder prepared in Example 1 was measured for the following physical properties.

Softening point measurement was performed using a CFT-500D rheometer (manufactured by Shimadzu), 5 kg _f The rate of temperature increase to the load was measured under test conditions of 3 ° C / min.

After a certain period of time after construction, if the low temperature characteristics are bad in winter, the asphalt hardens and cracks occur, causing water to leak out between the gaps, resulting in a loss of waterproof properties.

Thus, the low temperature characteristics were measured in the DS (heat-analyzer DSDS (TA Instrument, Dupont)).

As a result of measuring the asphalt modified with waste tire powder, it was found that the glass transition temperature showing low temperature characteristics is -33 ° C, which can withstand the winter weather in Korea.

As a result of measuring the water pressure of the waterproof sheet coated with 0.1 mm to 2.0 mm on the asphalt modified asphalt tire powder, it was found that not only it can withstand 2,000 mmHg but also exhibit water repellent properties. The water pressure measurement was measured using the model name HS-5 of KHNP.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 waterproof paper using asphalt modified with the tire tire rubber powder of the present invention, Figure 3 is a state diagram for manufacturing a waterproof paper using the asphalt modified with the tire tire rubber powder of the present invention, modified asphalt (1), first 1, the second nonwoven fabric sheet (2, 3), the modified asphalt (4) oozing on the upper surface of the first nonwoven fabric sheet (2), the waste tire containing modified asphalt (5) before coating, the blade coating (6) It can be seen that.

Looking at the structure, as shown in Figure 1,

The second nonwoven fabric sheet 3 formed on the lower portion, the modified asphalt 1 coated on the upper portion of the second nonwoven fabric sheet 3, and the first nonwoven fabric sheet 2 laminated on the modified asphalt 1, It is a structure of a waterproof paper using asphalt modified with tire tire powder composed of.

2 is a waterproof paper structure using asphalt modified with other types of waste tire rubber powders, the second nonwoven fabric sheet 3, the second nonwoven fabric sheet 3 formed on the bottom, and the second nonwoven fabric sheet 3 of FIG. It is a structure of waterproof paper using asphalt modified with a tire tire rubber powder composed of modified asphalt (1) applied on the top.

When explaining the construction method,

After cleaning the floor or wall to be cleaned, modified asphalt (4) portion of the modified asphalt (1) or the first nonwoven fabric (2) sheet of waterproof paper using asphalt modified with the tire tire rubber powder of the present invention After heating with a torch or iron, the modified asphalt (4), which has been heated to the floor or wall, is heated to the upper surface of the modified asphalt (1) or the nonwoven fabric sheet. It is a method of construction to increase the waterproof effect by attaching.

As described above, the present invention can be expected to improve the working environment by not using a volatile solvent when used as a waterproofing agent by forming a sheet by uniformly applying the asphalt modified with the tire tire rubber powder on a nylon sheet. In addition, although curing time, which is a time when the solvent is volatilized, the waterproof sheet of the present invention can be expected to reduce the construction time by reducing the working time since the work is completed in a few minutes with the construction. In addition, the use of waste tire rubber powder is expected to indirectly utilize the recycling of resources and the viscoelastic properties of the waste tire rubber powder.

Claims (4)

In the manufacturing method of waterproof paper using asphalt modified with waste tire rubber powder, First process (manufacture of modified asphalt) A modified asphalt is prepared from waste tire rubber powder having a softening point of 70 to 80 ° C by mixing 40 g of process oil (unchanged petroleum, P-4) and 1000 g of asphalt with a stirrer to 200 g of waste tire rubber powder. 2nd process (waterproofing) Asphalt modified by the waste tire rubber powder prepared in the first step is heated and melted between 150 ~ 200 ℃ and put into a sprayer spray coating on a polyester sheet (second nonwoven fabric sheet 3) 0.1mm ~ After uniform coating with a thickness of 2.0 mm, the polyester sheet (first nonwoven sheet 2) is again placed on the applied top. The modified asphalt (4) infiltrated on the polyester sheet (first nonwoven fabric sheet (2)) located on the upper portion of the modified asphalt (6) with a constant thickness (flat), and then cut to a desired size Method for producing a waterproof paper using asphalt modified with waste tire rubber powder. In the manufacturing method of waterproof paper using asphalt modified with waste tire rubber powder, First process (manufacture of modified asphalt) A modified asphalt is prepared from waste tire rubber powder having a softening point of 70 to 80 ° C by mixing 40 g of process oil (unchanged petroleum, P-4) and 1000 g of asphalt with a stirrer to 200 g of waste tire rubber powder. 2nd process (waterproofing) The asphalt modified with the waste tire rubber powder prepared in the first step is heated and melted between 150 ~ 200 ℃ and poured a predetermined amount on a 0.2 ~ 0.5mm thick sheet of paper and then coated with a modified asphalt (4) blade coating (6) a method of producing a waterproof paper using asphalt modified with waste tire rubber powder, characterized in that the thickness is made constant (flat) and then cut into a desired size. In modified asphalt with waste tire rubber powder, Waste tire rubber powder is modified with 40g of process oil (unchanged petroleum, P-4) and 1000g of asphalt and 200g of soft tire rubber powder. In the waterproof paper using asphalt modified with waste tire rubber powder, The second nonwoven fabric sheet 3 formed on the lower portion, the modified asphalt 1 coated on the upper portion of the second nonwoven fabric sheet 3, and the first nonwoven fabric sheet 2 laminated on the modified asphalt 1, Waterproof paper using asphalt modified with tire tire rubber powder, characterized in that it is configured to include.

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