KR101184220B1 - Eco-friendly polyolefin complex sheets for water-proofing and water-proofing/anti-root and coating method using the same - Google Patents

Abstract

The present invention is a polyolefin composite sheet that improves the adhesion or compatibility (affinity) of the primer and polyurethane or polyurea coating waterproofing material and waterproof or waterproof / waterproof composite sheet used in the waterproof construction process and waterproof or waterproof using the same To provide a construction method.
Waterproofing or waterproof / waterproof composite sheet according to the present invention is 30 to 45 parts by weight of polypropylene, 25 to 35 parts by weight of olefin elastomer, 25 to 40 parts by weight of functional additives, 1 to 5 parts by weight of filler and additives 1 to 5 By forming the uneven layer (1a) on the surface of the polyolefin film (1) produced by extrusion of the resin mixture consisting of parts by weight at 250 ~ 1000 kgf / cm ² pressure and 150 ~ 250 ℃, and bonded to the glass fiber (2) It is made of a waterproof or waterproof / waterproof polyolefin composite sheet and a waterproof or waterproof / waterproof construction method using the same.
Polyolefin composite sheet and waterproof construction method using the same according to the present invention has excellent bonding performance with polyurethane and polyurea coating waterproofing material and elutes asphalt components which are problems in general asphalt sheet and polyurethane and polyurea composite waterproofing. There is an effect that the safety, durability, etc. due to the phenomenon such as oil injury caused by the weakening does not occur, and the glass fiber is bonded to the polyolefin film to minimize the shrinkage and expansion in the length and width direction of the composite sheet.

Description

Eco-friendly Polyolefin Complex Sheets for Water-proofing and Water-proofing / Anti-root and Coating Method Using The Same}

The present invention relates to an environmentally friendly polyolefin composite waterproof sheet, and also relates to a waterproof or waterproof / corrosion construction method for imparting waterproof or waterproof / corrosion performance to a structure using environmentally friendly polyolefin composite waterproof sheet.

In general, the waterproofing method mainly used in Korea is the asphalt waterproofing method with the longest history, the liquid waterproofing method applied or penetrated to the base surface of the concrete structure, the film waterproofing method using urethane and acrylic rubber manufactured for waterproofing, asphalt Waterproofing methods such as waterproofing using asphalt sheets molded as the main raw material and synthetic polymer sheets made of synthetic resin as raw materials are known. Recently, the safety of interlayer, rooftop or underground waterproofing of concrete structures is known. In order to secure and maintain durability, efforts are made to improve materials and construction quality for waterproof construction.

The above waterproof methods have advantages and disadvantages according to each construction method, and the asphalt waterproof method has inconveniences in construction (fire, burns, etc.) due to melting asphalt on the roof of a building, and the construction site is small in size and cross section. Although suitable for short, large structures and spans suffer from the difficulty of relying only on highly skilled workers, as cracks in the structure also destroy the waterproofing layer.

In addition, the urethane film waterproofing, which is widely used among the film waterproofing methods, has elasticity against slight background cracking, so that it can be exposed to water, is easy to repair, and has excellent chemical resistance such as chemical resistance and solvent resistance, and has a free film thickness. However, the urethane waterproofing method may cause swelling, lifting, or peeling due to moisture or poor primer coating, poor concrete surface treatment and poor surface treatment (cleaning, breakage, dryness, etc.). There is a problem that the lifespan for waterproof construction is shortened because the leak occurs.

In the waterproofing method by waterproof sheet, asphalt sheet waterproofing can obtain the required film thickness, and it can be applied to complex shapes or steep slopes, and it is relatively excellent in water resistance, weather resistance, etc. It is less sensitive to treatment, less affected by shrinkage and expansion of base surface and water vapor pressure by insulation method, and it is known to be able to secure uniform quality, but there is a risk of fire when heat-sealing joints between sheets, Water leakage occurs due to partial defusion due to accelerated deterioration or poor heat, peeling phenomenon due to complex finishing, wide repair range, expensive and difficult to repair cause due to high leakage Not only tensile and tear strength but also heat resistance is weak, so it can be cut off at high temperature according to temperature change. The phenomenon occurs, the breakage at low temperatures and the smoothness of the sheet during the winter season is a long time required for construction, and the short length of the asphalt sheet causes a large number of joints, resulting in high defects at the joints. The weight of the seat is too heavy, which increases the worker's working intensity and increases the load of the building.

For example, in the prior art related to the waterproofing method, the domestic registration patent publication No. 10-0238994 and the domestic registration patent publication No. 10-0334602 in the asphalt sheet waterproofing method of the most problematic connection between the sheets polyurethane Although the composite waterproofing method using an improved asphalt sheet and polyurethane is used in combination with the "I" type integrated joint structure using the joint, the joint is bonded due to the difference in the coefficient of thermal expansion according to the temperature change due to the physical adhesion with the nonwoven fabric. Lifting or cracking of the part occurs, and thinner component contained in the polyurethane coating waterproofing material melts the asphalt sheet, causing defects in the asphalt component when the bottom concrete cracks. Process of melting asphalt sheet It is eluted at the time of crack in the surface not been later and, in part, let this case repair is not easy, to defects in the way back to form a waterproof layer to the top of the existing waterproof layer repair is not let to heal. In addition, Korean Patent Publication No. 10-09211676 discloses a composite waterproof sheet structure and a composite sheet waterproofing method using a rubberized asphalt sheet coated with a solvent-free urethane waterproofing agent, but even in this case, only due to the physical adhesion to the nonwoven fabric Due to the difference in coefficient of thermal expansion according to the change occurs the phenomenon of lifting of the joint portion, for that reason, the asphalt elution phenomenon occurs at high temperature, which adversely affects the durability.

In addition, the waterproof or composite waterproofing method using synthetic resin sheet as waterproofing method by waterproof sheet has better tensile strength, elongation rate and tear strength than waterproofing film, and it can respond to structure's behavior, crack tracking and external impact. However, the waterproof method using the synthetic resin sheet is bonded to the connecting portion between the two sheets by an adhesive, heat fusion or solvent welding, and the bonding method by the adhesive or solvent welding may be instantaneously good adhesion. However, due to the high possibility of introducing air into the edges of the process, the sheet may be lifted, and the adhesive strength is weakened after time due to repeated contraction and expansion of the waterproof sheet according to the temperature change after the completion of construction. Detachment or lifting occurs at the joint of the waterproof sheet Is a problem, and thermal fusion bonding method is not fast, the pharmaceutical and speed of the ambient temperature, is somewhat defective portion in contact with the adhesive of a long time occurs, there is a disadvantage that the skilled person work required.

In addition, the synthetic resin sheet is mainly a synthetic resin film such as polyethylene (HDPE, LDPE and LLDPE), polypropylene, PVC, PETE, and these synthetic resin films, particularly polyethylene (HDPE, LDPE and LLDPE), polypropylene, etc. Since it is extremely inert because it does not have, it has difficulty in perfect construction due to poor adhesion or compatibility with the primer layer or the polyurethane coating waterproofing material.

The present invention completes the present invention by improving the waterproofing method using the sheet, and in particular, by improving the problems of the synthetic resin sheet and polyurethane coating waterproofing method consisting of polyethylene (HDPE, LDPE and LLDPE), polypropylene, PVC, PETE and the like. It was.

The present invention is to provide an environmentally friendly waterproof or waterproof / waterproof polyolefin composite sheet and a construction method of the waterproof or waterproof / waterproof polyolefin composite sheet using the same, and more specifically used in the waterproof construction process To provide a waterproof or waterproof / corrosive composite sheet composed of an olefin-based composite resin having improved affinity (adhesiveness or compatibility) between a primer and a polyurethane or polyurea coating waterproofing material and a waterproof or waterproof / corrosive composite sheet. And also aims to provide a waterproof construction method using a waterproof or waterproof / waterproof composite sheet made of such an olefin composite resin.

As a solution for achieving the object of the present invention, a polyolefin-based composite sheet (A) using a waterproof film having excellent adhesive performance by improving affinity (adhesiveness or compatibility) with a primer or a polyurethane or polyurea coating waterproofing material is poly Polyolefin film prepared by extruding a resin mixture consisting of 30 to 45 parts by weight of propylene, 25 to 35 parts by weight of olefin elastomer, 25 to 40 parts by weight of functional additive, 1 to 5 parts by weight of filler, and 1 to 5 parts by weight of additive aid (1 The uneven | corrugated layer 1a is formed in the surface of), and it bonds with the glass fiber 2.

Referring to the manufacturing process of the polyolefin-based composite sheet (A) according to the present invention in more detail, the melt time, temperature and pressure of the resin mixture when the extrusion process the resin mixture according to the residence time of each extruder (reactor) The extruder structure and temperature gradient considering the frictional stress due to the dispersion distribution and movement (discharge) of the resin mixture are important, and 250 ~ 1000 kgf / cm ² It is preferable to extrude at 150 to 250 ° C under pressure, and the temperature control section (gradient) of the extruder should be at least 10 sections. In addition, the gear pump is extruded so that the overall surface tension is high (48 dynes or more) by the gear pump so that the balance between the single bond and the double bond is not broken, and the polyolefin film 1 has a thickness of 200 to 1000㎛. If the thickness is too thin compared to 200 ㎛ and is not preferable because the film becomes thin in the process of forming the uneven layer (1a) on the film surface.

In addition, the formation of the uneven layer 1a on the surface of the polyolefin film 1 is to increase the adhesion area between the glass fiber and the polyolefin film 1 to improve the adhesion, and the formation of the uneven layer 1a is a polyolefin film. Concave and convexity is formed on both sides of (1) by corona discharge treatment, and the glass fiber 2 is bonded to the polyolefin film 1 having the concave-convex layer 1a formed thereon with an acrylic adhesive agent. According to the composite sheet (A) to minimize the shrinkage and expansion in the length and width direction of the waterproof or waterproof / waterproof composite sheet by bonding the glass fiber (2) to the polyolefin film (1) on which the uneven layer (1a) is formed.

The polypropylene used in the present invention may be selected as long as it has physical properties suitable for extrusion processing, and may be selected from commercially available products (Honam Petrochemical Co., Ltd. SB530), and is not particularly limited.

In addition, the olefin elastomer according to the present invention is selected from ethylene / propylene copolymer rubber (EPR) or ethylene / propylene / diene copolymer rubber (EPDM rubber).

The functional additive according to the present invention is a polymer component which is formulated to improve affinity (adhesiveness or compatibility) with other liquid waterproofing materials in the waterproofing, waterproofing / waterproofing composite sheet according to the present invention. A commercially available product (UNI-REZ @ 110, Versamid 7 series) or maleic anhydride (Maleic AnHydride, molecular weight 98.06 g / mol) as polyamide resin prepared by condensation polymerization of ethylene diamine with ethylene diamine. It consists of a product (MacroDEM, MWC-507G) commercially available from polymers grafted to EPDM rubber (Graft rate is 0.5% to 2.5%).

Also used in the present invention Fillers are generally selected fillers widely used in the resin molding field and calcium carbonate (CaCO ₃ ) is preferred, and additive additives are also commonly used processing aids commonly used in the resin molding field, such as antioxidants, ultraviolet absorbers, antistatic agents, Additives known as stabilizers, lubricants, pigments, and the like may be appropriately selected and added.

And waterproof construction method using the polyolefin-based composite sheet (A) as a solution for achieving another object of the present invention by applying a urethane-based adhesive to the bottom surface arranged for waterproof construction of the primer layer (P) And, the polyolefin composite sheet (A) to the construction of the primer layer (P) on the top and the composite sheet (A) to the polyurethane or polyurea coating film consists of forming a waterproof coating layer (U) , More specifically,

a) floor cleaning step to clean up the floor of the part to be constructed;

b) forming a primer layer (P) by applying a urethane-based adhesive to the cleaned bottom surface;

c) Install the waterproof or waterproof / waterproof polyolefin-based composite sheet (A) in close contact with the primer layer (P), between the bottom surface of the site to be constructed and the composite sheet (A) and the composite sheet (A) and Composite sheet construction step of applying by superimposing the urethane-based adhesive so that the adhesive between the composite sheet (A),

d) Composite sheet overlapping construction for installing and joining the composite sheet (A) by overlapping the composite sheet (A) formed in the composite sheet (A) construction step to the top of the portion facing the composite sheet (A) Steps and,

e) a waterproof coating film forming step of forming a waterproof coating layer (U) by applying a polyurethane or polyurea waterproofing material as a whole on the surface of the composite sheet (A) to the upper surface after the composite sheet overlapping construction step It is a waterproofing or waterproof / proofing construction method of the polyolefin composite sheet (A).

The primer (adhesive) layer and the polyurethane or polyurea waterproofing material coating layer formed during the waterproof construction by the composite sheet (A) according to the present invention is an olefin film (1) containing a functional additive which is a feature according to the present invention. Affinity with (adhesion to compatibility) is improved to achieve a more complete waterproof construction.

In addition, in the waterproof construction method according to the present invention, when the polyolefin-based composite sheet (A) is exposed to the outside, the surface of the composite sheet (A), which is exposed to the top of the d) composite sheet overlapping step, e) a waterproof coating film forming step. It is made of a waterproof or waterproof / waterproof construction method of the polyolefin-based composite sheet (A), characterized in that to form a waterproof coating layer (U) of the intermediate and top coat by a polyurethane or a polyurea waterproofing material as a whole.

Polyolefin adhesive used for the primer layer (P) and polyurethane and polyurea (dry or fast curing) waterproofing material used as a coating film waterproofing material is a waterproofing material known in the art to which the present invention belongs, the domestic registration of the applicant of the present invention Patent Publication No. 10-0519522 and Domestic Patent Publication No. 10-0465447 It is preferable to be selected from polyurethane and polyurea (dry or fast-drying) waterproofing materials, for example, Supertex 003, Supertex PU-100, Supertex HM, and HITA NT-200, which are commercially available products of Ahae Co., Ltd. , Urethane M-6030, urethane HV, urethane M-8012, urethane topcoat # 2000, and KS F 3211 urethane rubber-based first and second class.

Polyolefin composite sheet and waterproof construction method using the same according to the present invention has excellent bonding performance with polyurethane and polyurea coating waterproofing material and elutes asphalt components which are problems in general asphalt sheet and polyurethane and polyurea composite waterproofing. There is an effect that the safety, durability, etc. due to the phenomenon such as oil injury due to the weakening does not occur, and further minimize the shrinkage and expansion of the length and width direction of the sheet by bonding the glass fiber to the polyolefin film.

In addition, the waterproof or waterproof / waterproof polyolefin composite sheet according to the present invention is very excellent in mechanical properties to reduce the load to be applied to the construction as possible, as well as to improve the convenience and joint treatment method in construction, It is environmentally friendly to the material, and it is effective in minimizing the defects of the product by the simple construction method, so it is non-exposed and exposed waterproof, bridge waterproofing, non-exposed waterproofing for tunnels and landscaping of apartment buildings, and waterproofing tunnel. It can be used for other joints and repair sites.

1 is a cross-sectional view schematically showing a waterproof structure constructed using a polyolefin composite sheet (CNS-PO / WP-GA) and a polyolefin composite sheet (CNS-PO / WP-GA) according to the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings and examples. However, the following detailed description does not limit the invention.

≪ Example 1 >

Polyolefin  film( CNS - PO Of WP ) Produce

35 parts by weight of polypropylene (Honam Petrochemical Co., Ltd. SB530), 30 parts by weight of ethylene / propylene copolymer (Japan Polyethylene Corporation KC650T), a functional additive (a polymer obtained by grafting maleic anhydride to EPDM rubber, trade name MacroDM; MWC- 507G) A resin mixture composed of 25 parts by weight, 2 parts by weight of CaCO ₃ , 1 part by weight of antioxidant, 1 part by weight of ultraviolet absorber, 1 part by weight of antistatic agent, and 1 part by weight of lubricant was extruded to a thickness of 350 μm by a known extruder After the film was formed, both surfaces of the prepared polyolefin film were formed by concavities and convexities by corona discharge treatment, thereby preparing a polyolefin film 1 having concave and convex layers 1a formed on both surfaces.

<Example 2>

Polyolefin  Composite Sheet CNS - PO Of WP - GA ) Produce

The glass fiber 2 having a thickness of 0.1 mm was bonded to one surface of the polyolefin film 1 having the uneven layer 1a formed on both surfaces manufactured in <Example 1> with an acrylic adhesive, and finally a polyolefin having a width of 1020 mm. Waterproofing or waterproofing / waterproofing polyolefin-based composite sheet (A) in which glass fibers are bonded to one surface of the film was prepared.

The performance values of the polyolefin film (CNS-PO / WP) and the polyolefin composite sheet (CNS-PO / WP-GA) prepared in <Example 1> and <Example 2> are shown in Table 1 below. It was.

<Example 3>

Waterproof construction using the waterproof or waterproof / waterproof polyolefin-based composite sheet (CNS-PO / WP-GA) prepared in Example 2

First, as shown in FIG. After arranging the bottom surface of the portion to be constructed for waterproof construction, and then coated with a urethane-based adhesive to form a primer layer (P), the waterproof or waterproof / waterproof polyolefin composite sheet of the present invention cut to the top (CNS- After the PO / WP-GA) (A) is installed in close contact, the urethane-based adhesive is superimposed so that the bottom of the waterproof construction site and the composite sheet (A) and the composite sheet (A) and the composite sheet (A) adhere well. The composite sheet (A) and the composite sheet (A) by overlapping the composite sheet (A) to the upper part of the portion facing each other, installed, bonded, and then displayed on the composite sheet (A) The urethane waterproofing material was generally applied to the upper surface with a thickness of 2 to 3 mm to form a waterproof coating layer (U).

The waterproof construction according to the present invention was able to maximize the effect on waterproof or waterproof / waterproof by attaching the advantages of the synthetic polymer sheet (KS F 4911) and the coating film waterproofing material (KS F 3211) (Fig. 1 Reference).

<Example 4>

By using a high temperature and high pressure equipment as a whole on the upper surface of the waterproof or waterproof / waterproof polyolefin composite sheet (A) according to the present invention by applying a hardening polyurea waterproofing material and hand-drying dry polyurea waterproofing material with a thickness of 2-3 mm Except for forming the waterproof coating layer (U) to form a coating film in the same manner as in <Example 3> to complete the waterproof construction.

The waterproof construction was able to further improve the mechanical performance and chemical resistance.

A: Polyolefin composite sheet for waterproof or waterproof / proof
1: polyolefin film, 1a: uneven layer
2: glass fiber, P: primer layer, U; Waterproofing film layer

Claims (7)

Polyamide resin or maleic anhydride prepared by polycondensation of dimer acid and ethylene diamine was grafted onto ethylene / propylene / diene copolymer rubber (EPDM rubber) (Graft rate is 0.5% to 2.5%). 250 to 1000 kgf of a resin mixture consisting of 25 to 40 parts by weight of a functional additive consisting of a polymer, 30 to 45 parts by weight of polypropylene, 25 to 35 parts by weight of an olefin elastomer, 1 to 5 parts by weight of a filler, and 1 to 5 parts by weight of an additive aid. / cm ² and extruded at a pressure and 150 ~ 250 ℃ A polyolefin composite sheet for waterproofing or waterproofing / corrosion, characterized in that the uneven layer (1a) is formed on the surface of the manufactured polyolefin film (1) and bonded to the glass fiber (2).
The method of claim 1, wherein the olefin elastomer is waterproof or waterproof / waterproof polyolefin composite sheet, characterized in that selected from ethylene / propylene copolymer rubber (EPR) and ethylene / propylene / diene copolymer rubber (EPDM rubber).
delete The polyolefin composite sheet according to claim 2, wherein an uneven layer is formed on both sides of the polyolefin film (1).
The polyolefin-based composite sheet according to claim 4, wherein the uneven layer is formed on the surface of the polyolefin film (1) by corona discharge.
In the method of waterproofing or waterproofing / waterproofing by the waterproofing or waterproofing / waterproofing polyolefin type composite sheet (A) in any one of Claims 1, 2, 4, and 5,
a) floor cleaning step to clean up the floor of the part to be constructed;
b) forming a primer layer (P) by applying a urethane-based adhesive to the cleaned bottom surface;
c) a composite sheet construction step of constructing a polyolefin-based composite sheet (A) on the primer layer (P), and
d) waterproofing the polyolefin-based composite sheet (A) comprising the step of forming a waterproof coating layer (U) by applying a polyurethane or polyurea coating film on the composite sheet (A) layer Or waterproof / waterproof construction method.
In the method of waterproofing or waterproofing / waterproofing by the waterproofing or waterproofing / waterproofing / polyolefin type composite sheet (A) in any one of Claims 1, 2, 4, and 5,
a) floor cleaning step to clean up the floor of the part to be constructed;
b) forming a primer layer (P) by applying a urethane-based adhesive to the cleaned bottom surface;
c) Install the waterproof or waterproof / waterproof polyolefin composite sheet (A) in close contact with the primer layer (P), between the bottom surface and the composite sheet (A) of the site to be constructed and the composite sheet (A) and Composite sheet construction step of applying by superimposing the urethane-based adhesive so that the adhesive between the composite sheet (A),
d) The composite sheet overlapping construction step of installing and joining the composite sheet (A) by overlapping the composite sheet (A) formed in the composite sheet (A) construction step to the top of the portion facing the composite sheet (A) And
e) a waterproof coating film forming step of forming a waterproof coating layer (U) by applying a polyurethane or polyurea waterproofing material as a whole on the surface of the composite sheet (A) to the upper surface after the composite sheet overlapping construction step Waterproofing or waterproofing / corrosion construction method of polyolefin composite sheet (A).

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