KR100728332B1 - Water-proof sheet applying bentonite and the manufacturing method thereof - Google Patents

Abstract

The present invention relates to a bentonite waterproof sheet capable of preventing leakage of roofs, walls, floors, and pipes of concrete building structures. More specifically, the sheet is mixed with 43-50 wt% of bentonite, 30-35 wt% of polybutene, 15-20 wt% of butyl rubber, 1-2 wt% of black carbon, and 1-2 wt% of coumarone. Forming a rubber of the form and having an adhesive portion on both sides of the rubber is configured a waterproof sheet provided with a protective paper on the outer surface.

The present invention provides a semi-permanent waterproof sheet prescription by the strong adhesive force when attached to the crack portion that leaks to prevent the initial leakage and by finding and sealing the voids that the body is disassembled and leaks while blowing the volume of the sheet in a short time. It is related with the bentonite waterproof sheet which became possible, and a manufacturing method.

Waterproof sheet, waterproof tape, bentonite, rubber

Description

Water-proof sheet applying bentonite and the manufacturing method

1 is a manufacturing process of the bent night waterproof sheet of the present invention.

Figure 2 is an illustration of a molding system according to the waterproof sheet manufacturing process of the present invention

Figure 3 is an illustration of the configuration of a waterproof sheet of the present invention.

Figure 4a is a cross-sectional view of the waterproof sheet of the present invention.

Figure 4a is a cross-sectional view of another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

1: Hopper 1 ': Agitator

2: discharge part 2a: extrusion mold

3: Air nozzle 5: Protective paper roll

6: Winding roller 7: Guide roller

10: waterproof sheet 20: rubber

30,30 ': Adhesion 40, 40': Protective paper

The present invention relates to a bentonite waterproof sheet capable of preventing leakage to cracks such as roofs, walls, floors, and pipes of concrete building structures. More specifically, bentonite, butyl rubber, black carbon, polybutene, and coumarone are mixed and melted to form a rubber sheet or tape, and then a waterproof sheet having adhesive parts on both sides is formed. Bentonite waterproof sheet that prevents water and moisture from penetrating completely and finds and seals air leaks in existing building ceilings, floors, walls, and pipes, making it easy to waterproof and semi-permanently. And to provide a manufacturing method.

As waterproofing material for waterproofing the roof of the existing building structure or the upper part of the parking lot or the underground outer wall (cooperative ward), synthetic polymer organic fiber based on solid brown asphalt, asphalt compound, asphalt felt and asphalt roofing obtained from petrochemical series Waterproofing materials are used, such as asphalt waterproofing method has been carried out for several decades, this is a repeated coating, the coating of the waterproof layer is relatively thick, the waterproof effect is excellent and oily, so it is possible to work in winter As the asphalt is required to be heated and laminated at the same time, the process is complicated, special construction techniques are required, labor costs are high, work risk is high, environmental pollution is serious, and temperature changes are sensitive, so cracks It is easy to occur, and the discovery of the joint site Given the difficult and rainy season, the air had a long disadvantage.

As another waterproofing agent, a sheet waterproofing agent in the form of a roll (ROLL) in which rubber compounded asphalt is mixed by mixing synthetic polymer compound and asphalt, using a cloth or PP nonwoven fabric as a main material, is easy to install. While it has the effect of shortening the air and has some flexibility in the occurrence of concrete cracks, it is difficult to find the defects at the time of defects due to the large number of joints, repair costs are high, and the construction is simple but requires precise construction. In addition to the need for a constant working space, there is a disadvantage in that the waterproofing construction must be performed in parallel when the retaining wall is waterproofing.

In addition, a tar urethane waterproofing method using a coating waterproofing material made of an elastic rubber-like flexible coating film formed by mixing a polyurethane resin, which is an organic polymer material, and refined tar (TAR), is used, but it is resistant to concrete cracking and has no joints. Excellent resistance to cracks and vibrations, excellent waterproofing effect, easy to find defects, easy to repair, while the construction cost is expensive and the curing agent of the main material of the waterproofing material is divided, it is necessary to pay attention to the construction. It is harmful to a human body and there is a problem that there is a fear of fire.

Another waterproofing agent is bentonite tape, but the existing bentonite tape is not sticky, so it is difficult to fix it because it does not stick to the pipe or building wall. In particular, when the bentonite is in contact with water can be maintained by the water absorption and expansion, but the adhesive force is dropped when contacted with water for a long time, so that there is a problem that the water absorption effect is lost in the crack part is lost.

The present invention for achieving the above object is 43 to 50% by weight of bentonite, 30 to 35% by weight of polybutene, 15 to 20% by weight of butyl rubber, 1 to 2% by weight of black carbon, 1 to 5 of coumarone It is manufactured by mixing 2% by weight of the waterproof sheet bonded with protective paper on both sides of the molded rubber to completely prevent the penetration of water and moisture during construction, as well as finding and sealing voids leaking from existing building ceilings, floors, walls, and pipes. It is an object of the present invention to provide a bentonite waterproof sheet and a manufacturing method which can be easily and easily waterproofed and semi-permanently protected by waterproofing.

An embodiment of the present invention configured as described above is as follows.

43-50 wt% of bentonite, 30-35 wt% of polybutene, 15-20 wt% of butyl rubber, 1-2 wt% of black carbon, 1-2 wt% of coumarone It forms and forms the waterproof sheet 10 provided with protective paper 40, 40 'on the rubber 20 double-sided adhesive portion 30, 30'.

Looking at the manufacturing process of the waterproof sheet 10 made as described above,

43-50 wt% of sheet material bentonite, 30-35 wt% polybutene, 15-20 wt% butyl rubber, 1-2 wt% black carbon, 1-2 wt% coumarone Stirring at 80 to 100 ° C. for 50 minutes to form a gel;

The cooling process and the natural cooling of the mixed sheet material for 24 hours:

Cutting the cooled sheet material into a hopper and passing the screw at 100 to 150 ° C;

Extruding the sheet material liquid melted in the hopper into a sheet-shaped rubber through a discharge part formed of an extrusion mold at the bottom of the hopper;

Cooling the rubber extruded from the discharge part with air nozzles installed at both sides;

The waterproof sheet is manufactured by bonding protective paper to both sides of the cooled rubber.

Looking at the characteristics of the composition used as a waterproof sheet in the present invention,

Bentonite [bentonite] is primarily a montmorillonite clay as a (粘土), in many cases, including quartz, feldspar (長石), and zeolite. The color is white, gray, light brown, light green and so on. It has pearlescent gloss and lead gloss, and is produced as a dense mass with a sense of fat. It is similar to the properties of montmorillonite, such as swelling by adsorbing water and having excellent cation exchangeability. Tuff and vitreous rhyolite have been altered. Its use is very wide, and it is used as a main component of petroleum refining distillation, binder of casting type, mixing agent of ceramic raw materials, and base of ointment.

Polybutene is used as lubricants, adhesives, caulking and sealing compounds, electrical insulation, dispersants such as pigments and paints, food additives, gum bases, etc.

In addition, the hydrogen-free grade is used as a raw material for the production of charcoal dispersants for automobile engine oils by using the reactivity thereof, and mixed with various fillers and dry oils to prepare a durable caulking and sealing agent.

It is also used as a low temperature softening agent for chewing gum based on polyvinyl acetic acid.

In addition, polybutene has good adhesion to natural rubber, synthetic rubber, etc., and has strong adhesiveness. It has good compatibility with natural rubber, SBR, and butyl rubber, so it is a process oil of dyeing products. Can be used.

Polybutene is colorless and transparent and is used as a pigment propellant of ink, and it is also used to give adhesiveness to printing ink and to prevent ink from sinking.

Butyl rubber ( Btyl Rubber) , one of synthetic rubbers, is made by isobutylene copolymerizing a small amount of isoprene. A colorless pure polymer is obtained by cation copolymerization at about abbreviation IIR and about -95 degreeC low temperature. Vulcanized rubber is used as a dustproof material due to its high shock absorption function, and its gas permeability is very low, so it is used for tire dive. It is also relatively stable against acids, alkalis, oxygen and the like.

Carbon black (carbon black), as follows, depending on the carbon, the formula to fine powder obtained by a combination of pyrolysis and incomplete combustion of natural gas or oil such as a hydrocarbon.

1) Channel block, gas-shaped hydrocarbon flame is made by hitting cold channel steel, and small particles are used as color block.

2) Thermal block, made by pyrolysis, which is used as a pigment due to its large particle size.

3) It is made in furnace block and heat storage furnace. It is used to reinforce rubber products such as tires and to give plastic conductivity. The rubber of waterproof sheet is formed in black.

Coumarone (cumarone), corresponds to a benzofuran, a colorless oil, boiling point 174 ℃, be present in the coal tar with its homologs. In other words, it becomes Coumaran. Coumarone resin is produced by inorganic acids.

The manufacturing process according to the embodiment of the present invention configured as described above will be described in detail.

First step: mixing raw materials

In order to manufacture the waterproof sheet, 43-50 wt% of bentonite, 30-35 wt% of polybutene, 15-20 wt% of butyl rubber, and 1-4 carbon black, which are raw materials for forming the rubber 20 in the form of a sheet or tape, are first manufactured. 1 wt% and 2 wt% of coumarone are mixed and mixed with a separately formed stirrer 1 ′. The mixed raw materials are stirred in a stirrer 1 'at a temperature of 80 to 100 ° C. for 50 minutes to form a gel.

Bentonite, which is a raw material of the rubber 20 of the waterproof sheet 10, hydrates and expands when reacted with water to form a gel type diaphragm in a compacted state. Therefore, it consists of a high-performance sodium bentonite that exhibits an impermeable effect and a double waterproof membrane structure formed by compression-molding a physical and chemically strong and tough high-performance sheet (HDPE), and the construction material is simple and quick, so the construction is wide and the construction material can overcome the construction conditions. Used as

Second step: cooling and cutting raw materials in gel form

The mixed sheet material is continuously stirred in a stirrer (1 ') at 80 to 100 ° C. to form a gel, and then aged for 24 hours to naturally cool to remove bubbles in the process of stabilization and cooling. The component of does not cause a chemical reaction. At this time, since the gel is matured while naturally cooled for 24 hours, the gel is cut to a predetermined size and put into a hopper 1 having an extrusion mold 2a.

Third Process: Extrusion

The raw material cut | disconnected in the said 2nd process is put into the hopper 1 which has the extrusion mold 2a at the low stage, and is melted. At this time, since the hopper 1 is installed with a heater and heated to 100 to 150 ° C., the raw material in the hopper is melted again to form a gel state.

The raw material formed in the gel state is molded into a rubber 20 in the form of a sheet or tape while passing through the discharge part 2 formed of the extrusion mold 2a at the bottom of the hopper 1.

The shape of the rubber in the form of a sheet or a tape is selected in accordance with the extrusion mold 2a of the discharge portion 2. That is, when the extrusion mold 2a constituting the discharge part 2 is used in the form of a tape having a small width, the rubber 20 is extruded in the form of a tape, and when the extrusion mold 2a is used in the wide shape, The rubber 20 in the form of a sheet can be extruded. At this time, the rubber that is extruded is in a state of adhesive strength on both sides.

Fourth Process: Cooling and Protecting Paper Bonding

The rubber 20 formed in the third process is cooled to maintain the sheet or tape shape by the air nozzle 3 installed at the bottom of the hopper 1. The air nozzle 3 is positioned at the bottom of the discharge part 2 to blow air to both sides of the extruded rubber to cool it.

At this time, the molded rubber 20 contains adhesiveness on both sides, and there is no need to apply a separate adhesive.

The rubber 20 thus formed is transported by a plurality of guide rollers 7, and the protective paper rolls 5 are formed on the upper and lower portions of the rubber so that the protective paper (release paper) 40, 40 'can be adhered to both sides of the rubber of the conveying line. At the same time, the rubber 20 is moved so that the protective paper is released from the protective paper roll 5 to be bonded to the adhesive parts 30 and 30 'of the rubber.

The rubber 20 having the adhesive parts 30 and 30 ′ is wound in a roll by the winding roller 6 on one side in a state in which the protective papers 40 and 40 ′ are attached to protect both sides thereof.

The protective papers 40 and 40 'used in the present invention are easily separated from the adhesive sheets 30 and 30' when used as a waterproof sheet 10 by using a general release paper. .

According to the present invention, the adhesive parts 30 and 30 'are formed on both surfaces of the rubber 20 of the waterproof sheet 10 so as to adhere or tape to cracked parts of the building roof and pipes where water is leaked. Is able to maintain 1.5㎏f / ㎠ at all times, so it is completely waterproof from the beginning of waterproofing.

In addition, the present invention by forming the adhesive portion 30, 30 'on both sides of the rubber 20 used as the waterproof sheet 10, the adhesive force is improved when attached to the crack portion is not only waterproof but also by using bentonite as the main raw material After contact with water, the rubber body starts to decompose after 2 hours, and after 24 hours, it finds and seals the water leakage voids and has a permanent waterproof effect.

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Waterproof sheet 10 of the present invention is to provide a waterproof sheet 10 to maintain the adhesive force 1.5kgf / ㎠ when attached by forming the adhesive portion 30, 30 'on both sides of the rubber 20. will be.

In the present invention as described above, the waterproof sheet raw material for forming a sheet or tape-type rubber is mixed with bentonite, polybutene, butyl rubber, black carbon, and coumarone to form a rubber and to form an adhesive part on both sides, so that leakage occurs. The adhesive force is strong when attached to the crack part to prevent the initial leak and also has the effect of providing a semi-permanent waterproof sheet by finding and sealing the pores where the body is disassembled and leaks while the volume is blown in a quick time.

Claims (2)

43 to 50% by weight of bentonite, 30 to 35% by weight of polybutene, 15 to 20% by weight of butyl rubber, 1 to 2% by weight of black carbon, and 1 to 2% by weight of coumarone to form a sheet-shaped rubber. Bentonite waterproof sheet, characterized in that the protective paper 40, 40 'is provided on both sides of the rubber 20 having. 43-50 wt% of sheet material bentonite, 30-35 wt% of polybutene, 15-20 wt% of butyl rubber, 1-2 wt% of black carbon, 1-2 wt% of coumarone, and then 80-100 in a stirrer Stirring at 50 ° C. for 50 minutes to form a gel; The cooling process and the natural cooling of the mixed sheet material for 24 hours: Cutting the cooled sheet material into a hopper and melting it at 100 to 150 ° C; Extruding the sheet material liquid melted in the hopper into a sheet-shaped rubber through a discharge part formed of an extrusion mold at the bottom of the hopper; A cooling step of cooling the rubber extruded from the discharge part by injecting air into the air nozzle; A method for producing a bentonite waterproof sheet, comprising the step of adhering protective paper to both surfaces of a cooled rubber.

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