KR101698027B1 - Reinforced composite PVC waterproof sheet - Google Patents

Abstract

The present invention relates to a reinforcement composite PVC waterproof sheet. According to the present invention, the reinforcement composite PVC waterproof sheet comprises: upper and lower sheets formed into two layers; a reinforcement core weaved in a V-shape with reinforcement yarn, weft yarn, and warp yarns; and an ultraviolet coating material. The present invention is provided as a single layer by being thermally glued. The present invention is able to be used as a waterproof sheet for a top floor or a rooftop of a building without a defect caused by a temperature change by having sufficient tensile and tearing performance even to a bias load by enhancing durability more than an existing waterproof sheet. Moreover, the present invention is capable of significantly reducing costs for maintenance (LCC) as well as costs for waterproof construction by enabling direct construction on a flat rooftop or roof, an inclined rooftop or roof, and the rooftop of a truss structure (even on a panel with gullies) with a single sheet layer even without using a paint film like complex waterproofing.

Description

{Reinforced composite PVC waterproof sheet}

The present invention relates to a reinforced composite type PVC waterproof sheet, and more particularly, to a PVC waterproof sheet having improved durability to minimize the surface aging of the sheet due to temperature change and to minimize tearing of the waterproof sheet by wind load To a reinforced composite PVC waterproof sheet which can be suitably applied to a roof of a building, a roof of an apartment, and a top layer of a truss structure.

In general, waterproof works are necessary to prevent water leakage due to rain or the like on the roof of the building or the upper surface of the parking lot. Various types of waterproofing methods are used, and mortar liquid waterproofing, water-soluble or oil-based waterproofing, asphalt waterproofing and waterproofing sheets are used.

Waterproofing using double sheet is made of synthetic rubber, synthetic resin or rubberized asphalt which has excellent elasticity, and made waterproof sheet of a certain standard, and adheres firmly to the floor or wall so that it can cope with rainfall from the outside .

Such a waterproof sheet is a waterproofing method of forming a waterproof layer by spreading a sheet-like waterproofing material on a floor surface to be waterproofed and has a merit that the construction is relatively simple and the construction period is shortened. Therefore, It is one.

The waterproof sheet used for waterproofing the sheet is manufactured in the form of a roll-shaped sheet having a predetermined width and length (usually 1 to 2 M in length and 10 to 20 M in length) in advance in the factory so as to facilitate construction and handling in the field And they are installed on the bottom surface at regular intervals.

Generally, in the case of a rubberized asphalt waterproofing sheet, the overlapped portion of the sheet is heated and melted by using a heating mechanism such as a tundish and the like. In the case of a synthetic resin or synthetic rubber waterproof sheet, an adhesive or an adhesive tape is used (PVC sheet, TPO sheet, ECV sheet, EPO sheet, PVC sheet, TPO sheet, etc.) or by using a solvent (PVC sheet) or hot air blower HDPE sheet, etc.).

The majority of domestic waterproofing methods are currently being absorbed in complex waterproofing methods. The reason for this is that the conventional sheet layer can not function as a roof waterproof property of a building. Therefore, the present invention is directed to a composite method using a coating after a sheet waterproofing process.

However, there is a problem of defects and maintenance due to increase in waterproof construction cost and complexity of the construction process as described above.

Although the waterproofing sheet construction method is applied by using the front adhesion type or the partial insulation type, the waterproof layer is continuously damaged due to lack of responsiveness to the behavior of the building.

In order to solve the above problem, Korean Patent No. 10-1484093 (entitled: Integrated Waterproof Antifouling Color Sheet Using PVC Sheet and Adhesive, and Waterproofing Method Using the Same), filed on Jan. 13, 2015, Quot;).

The above-mentioned patent document has environmental friendliness, excellent waterproofness and antistatic property, can make various colors, has a simple workability and durability, has a heat insulating effect, is easy to join joints, It is formed on the uppermost layer that complements the shortcomings of aging when exposed to sunlight. It protects the lower layer by blocking ultraviolet rays, and has weather resistance and primary waterproofing ability to withstand severe climate, A colored ultraviolet barrier coating layer; A primary polyvinyl chloride layer formed below the ultraviolet barrier coating layer and functioning as a secondary waterproof antipyretic; A secondary polyvinyl chloride layer formed below the primary chlorinated scale layer and functioning as a third waterproof antipyretic; A polyester layer formed between the primary polyvinyl chloride layer and the secondary polyvinyl chloride layer to prevent wrinkles when the primary polyvinyl chloride layer and the secondary polyvinyl chloride layer are bonded together, ; An adhesive layer formed at a lower portion of the secondary polyvinyl chloride layer to function as a final waterproof antipand and to join the waterproof antiperspirant sheet to a concrete layer or a layer of other material, And a release film layer formed as a release film and layered below the adhesive layer to protect the adhesive layer for storage and transportation.

The polyester layer is a polyester fabric in the form of a mesh having a weft and a warp. Since the PVC is impregnated between the meshes, wrinkles are prevented from occurring when mutual bonding of the primary polyvinyl chloride layer and the secondary polyvinyl chloride layer occurs, It is a component that increases the tensile strength and elongation to make a waterproof anticorrosive layer without a change in physical properties even if it is used for a long time. However, it is a woven fabric of mutually intersecting weft and warp, There is a problem of tearing and durability remarkably lowering in the elongation percentage. Moreover, since it is a material which can be applied to the sheet layer by removing the latency of the concrete base surface by the front adhesion type, It is difficult to apply it to the waterproof layer.

In this patent document, the surface of the waterproof sheet due to climate change is repeatedly shrunk, dried and expanded, and in the case of a waterproof sheet installed outdoors, a curing phenomenon occurs due to exposure to ultraviolet rays to cause a fine surface crack , The tensile and tearing performance is remarkably deteriorated depending on the degree of occurrence of cracks, and there is a problem that the waterproof sheet durability of outdoor use (exposure) is remarkably deteriorated.

In order to construct the sheet, it is necessary to apply the primer, which is a harmful substance, to the entire surface of the construction site and the adherend to ensure the waterproof performance of the sheet. Therefore, There are various risk factors from time to completion.

It is an object of the present invention to solve the above-mentioned conventional problems, and it is an object of the present invention to improve the monolayer structure of the PVC waterproof sheet to minimize the surface aging of the sheet according to the temperature change and to minimize the tear of the waterproof sheet by the wind load The present invention provides a reinforced composite type PVC waterproofing sheet which can be suitably applied to roofs of roofs, roofs and trusses of apartment buildings, roofs of apartments, and trusses.

That is, in order to solve the problems of the patent literature which can not secure the workability and performance by the material itself, the present invention is applicable to both new and existing buildings and existing buildings, It is possible to construct and to improve the waterproof performance and the performance of the sheet itself by a single layer of the sheet, not the composite method.

According to an aspect of the present invention, there is provided a reinforced composite type PVC waterproof sheet comprising: an upper sheet member made of a first sheet and a second sheet by thermal bonding; A base sheet material made of a third sheet and a fourth sheet by thermal bonding; And the warp and weft yarns are woven in a weft-warp and weft-warp manner while maintaining warp and weft spacing while passing through weft yarns and warp yarns as reinforcing yarns, A reinforcing core attached by welding; An ultraviolet coating material coated on a surface of the first sheet; .

The upper sheet member and the lower sheet member according to the present invention were prepared by mixing 58.0 parts by weight of a plasticizer DOP (dioctyl phthalate), 2.5 parts by weight of a stabilizer as a stabilizer, 3.0 parts by weight of a flame retardant diantimony trioxide 0.5 parts by weight of a UV stabilizer, 0.3 parts by weight of a color fading agent, 30.0 parts by weight of calcium carbonate and 4.0 parts by weight of a pigment.

The reinforcing core material according to the present invention is woven in a thickness of 1.2 to 1.5 mm and the reinforcing yarn constituting the reinforcing core material is continuously woven in a V-shape while being bound at regular intervals in the longitudinal direction parallel to the weft and the warp .

The reinforced composite type PVC waterproof sheet according to the present invention includes a top sheet material, a bottom sheet material, a V-shaped reinforcing thread made of two layers, a reinforcing core material woven with warp and weft, and a UV coating material, It is provided as a single layer to enhance durability compared to existing waterproof sheet, and it has tensile and tear performance sufficient for unbalanced load. It is waterproof for the top and top floor of buildings. It is used for purpose purpose. It can be used without defects and can be used as a single layer of flat roof or roof of a sheet without using a coating material like a composite waterproofing, and on the roof of a sloping roof, roof or truss structure (work on a framed panel) It is possible to reduce the cost of waterproof construction significantly.

In addition, when a sheet is damaged or flawed, it can be repaired using a reinforced patch by a simple process, unlike a composite waterproofing.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view of a reinforced composite type PVC waterproof sheet of the present invention,
FIG. 2 is a cross-sectional view showing the heat adhesion relationship of the reinforced composite type PVC waterproof sheet according to the present invention,
FIG. 3 is an enlarged photograph of a reinforced composite waterproof sheet according to the present invention,
FIG. 4 is an enlarged photograph taken by extracting a reinforcing fabric impregnated in a conventional waterproof sheet corresponding to FIG. 3,
FIG. 5 is a table showing results of basic tests on the physical properties of the reinforced composite type PVC waterproof sheet according to the present invention,
Figs. 6 to 11 are test results of tensile and stretch tests after the deterioration treatment of the reinforced composite type PVC waterproof sheet. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

1 and 2, the PVC waterproof sheet 100 according to the present invention comprises a top sheet sheet material 10 composed of first and second sheets 12, 14 by thermal bonding; A base sheet material (20) composed of third and fourth sheets (22, 24) by thermal bonding; The warp yarns 31 and the warp yarns 32 are woven in a transverse and longitudinal grid pattern while the warp yarns and weft yarns are passed through the weft yarns and weft yarns as the weft yarns 33, A reinforcing core member (30) attached by heat fusion between the sheet (10) and the base sheet material (20); And an ultraviolet coating material (40) coated on the surface of the first sheet (12).

The upper sheet member 10 and the lower sheet member 20 were prepared by mixing 58.0 parts by weight of a plasticizer DOP (dioctyl phthalate), 2.5 parts by weight of a stabilizer stabilizer based on 100 parts by weight of a PVC resin, ), 0.5 parts by weight of a UV stabilizer, 0.3 parts by weight of a color fading agent, 30.0 parts by weight of calcium carbonate and 4.0 parts by weight of a pigment.

That is, the upper sheet sheet material 10 and the lower sheet sheet material 20 are synthetic high-molecular-weight PVC sheets, and the base sheet material is manufactured at a ratio of 70% of the new material and 30% of the recycled material, It can be used as a single layer waterproof sheet.

The reinforcing yarn 33 is a conventional polyester fiber material and is generally made of a polyester fiber material, as shown in FIGS. 3 and 4, And the reinforcing core material 30 is woven in a thickness of 1.2 to 1.5 mm.

The reinforcing core material is such that the reinforcing yarns are continuously stitched on the warp yarns and the warp yarns to form a V-shaped binding yarn.

The reinforced composite PVC waterproof sheet of the present invention as described above was able to obtain sufficient durability as compared with the conventional waterproof sheet through each experiment.

This shows that the optimum waterproof stability of the waterproof sheet can be ensured by keeping the resistance strength of the PVC waterproof sheet 33 as large as possible to prevent the tearing of the waterproof sheet 33 as much as possible. .

division
unit Weaving method of weft and warp only Addition of V-weaving method of weft yarn and warp yarn Company A Company B Company C Tear performance
Lengthwise N
115 121 139 141 Bow direction 93 105 107 144

division
unit Weaving method of weft and warp only Addition of V-weaving method of weft yarn and warp yarn Company A Company B Company C Tensile performance
Lengthwise N
55 20 40 78 Bow direction 53 20 40 68

In the test methods for the above [Table 1] and [Table 2], 75 mm was cut in parallel to the long side in the center of the short side of the test piece, and 45 mm was fixed from each end of the test piece. The specimens were stretched until they were broken at a tensile speed of 100 mm / min by applying a tensile tester.

As a result, as can be seen from the attached FIG. 5, the conventional PVC waterproof sheets of A, B, and C that are woven with wefts and warp yarns all have a strength in the width direction of 70 to 80% In contrast, the PVC waterproof sheet impregnated with the V-shaped fabric as the reinforcing core in the present invention has a tear performance substantially equal to the strength in the longitudinal direction and the width direction.

4 is a view showing that a reinforcing fabric applied to a reinforcing fabric in a conventional waterproof sheet is woven with a weft and a warp in an X-like shape. As in the present invention, a reinforcing yarn is woven in a V- The tensile strength of the multi-direction is increased. However, since the manufacturing cost and the material cost are high, and the impregnation effect at the time of fusion of the upper sheet material and the lower sheet material is poor, There is a disadvantage in that the defective rate is increased when the waterproof sheet is manufactured by winding the sheet in a roll form due to a decrease in the adhesion force of the base sheet material.

3, the reinforcing core 33 constituting the reinforcing core material 30 of the present invention is V-shaped and has a high impregnation effect between the sheets and has a high tensile strength. The tear strength value It can also be predicted that tear performance equivalent to the length and width direction of the waterproof sheet appears.

The result of the test method shown in FIG. 5 of the PVC waterproof sheet of the present invention to which the V-shaped reinforcing room is applied is as follows.

First, in the PVC waterproof sheet 100 according to the present invention, the surface of the first sheet 12 of the upper sheet member 10, which is the first outer surface, is coated with an ultraviolet coating material 40, This is because the tension and tear performance of the PVC waterproof sheet 100 is higher than that of the conventional waterproof sheet due to the application standard of the reinforced core 30 in which the reinforcing chamber 33 is woven with the V- Cracks) can be minimized.

Therefore, in the present invention, the examples including both the top sheet material, the base sheet material, the reinforcing core material and the ultraviolet coating material having two layers have a correlation according to the tensile and tearing performance as described above.

The reinforced composite type PVC waterproof sheet according to the present invention had a tensile strength of 78 N / mm in the longitudinal direction and 68 N / mm in the width direction (KS performance standard: 24 N / mm or more) The tensile strength was improved by 330% in the longitudinal direction and by 280% in the width direction with respect to the quality standard, and the elongation was improved by 200% in the width direction compared with the quality standard, while the direction was 30% and the width direction was 31% %, And the width direction was improved by 210%.

In addition, referring to the test result table, the tear performance was improved by 230% in the longitudinal direction and by 220% in the width direction with respect to the quality standard, with 117N in the longitudinal direction and 111N in the width direction (KS performance standard: 50N or more).

As a result of performance evaluation on the temperature dependent performance, the tensile strength was 54 N / mm in the longitudinal direction and 50 N / mm in the width direction (at KS performance standard: 10 N / mm or more) at 60 ° C., The tensile strength was 540% in the longitudinal direction and 500% in the width direction, and the elongation was 290% in the longitudinal direction and 280% in the width direction. .

On the other hand, the performance evaluation result of the reinforced composite PVC waterproof sheet on the heat stretchability was evaluated as follows: when the elongation was 0.5 mm in the longitudinal direction and 0.5 mm in the width direction (KS: 2.0 mm or less in extension and less than 4.0 mm in shrinkage) It was found that the shrinkage amount in the longitudinal direction and the width direction was the same as 0.5 mm, and it was reduced by 1/8 in the longitudinal direction and the width direction with respect to the quality standard.

On the other hand, the performance evaluation results on the tensile performance after the deterioration treatment of the reinforced composite PVC waterproof sheet were 92% in the longitudinal direction and 91% in the width direction (more than 80% in KS) (97% in the direction and 90% in the width direction (70% or more in the KS standard)), and the accelerated exposure treatment: the tensile strength ratio is 85% in the longitudinal direction and 91% in the width direction (more than 80% in KS).

The tensile strength ratio at the time of alkali treatment is 97% in the longitudinal direction and 97% in the butterfly direction (KS: 80% or more) in the longitudinal direction and 97% in the longitudinal direction and 87% The elongation ratio was 93% in the lengthwise direction and 84% in the butterfly direction. As a result of the quality improvement analysis (as compared with the KS quality standard), the tensile strength ratio in the longitudinal direction was increased by 120% The tensile strength ratio was 110% in the longitudinal direction and 110% in the width direction during the accelerated exposure treatment. The elongation ratio in the accelerated exposure treatment was 120% in the longitudinal direction %, 110% in the width direction. The tensile strength ratio in the alkali treatment was 120% in the longitudinal direction and 120% in the width direction, and the elongation ratio was 120% in the longitudinal direction and 110% .

6 to 11 show test results according to the test results of the bonding tensile and elongation ratios after the deterioration treatment of the reinforced composite type PVC waterproof sheet 100 and show excellent durability results against deterioration and elongation after deterioration and bonding It is possible to construct a single layer of waterproof sheet suitable for various places without using the existing film waterproofing such as the roof of the building, the outdoor roof, and the top layer. In particular, in the case of the base sheet material, It is possible to increase the reliability of the product to the satisfaction of the maintenance after the waterproofing construction.

As described above, the present invention has been described with reference to particular embodiments, such as specific elements, and specific embodiments and drawings. However, it should be understood that the present invention is not limited to the above- And various modifications and changes may be made thereto by those skilled in the art to which the present invention pertains.

Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

10: upper limb sheet material 12: first sheet
14: second sheet 20: base sheet material
22: third sheet 24: fourth sheet
30: reinforcement core 31: weft
32: slant 33: reinforcement room
40: ultraviolet coating material 100: PVC waterproof sheet

Claims (3)

In a PVC waterproof sheet,
The PVC waterproof sheet (100)
A top sheet sheet material 10 made up of first and second sheets 12, 14 by thermal bonding;
A base sheet material 20 composed of third and fourth sheets 22, 24 by thermal bonding;
The warp yarns 31 and the warp yarns 32 are woven in a transverse and longitudinal grid pattern while the warp yarns and weft yarns are passed through the weft yarns and weft yarns as the weft yarns 33, A reinforcing core member (30) attached by heat fusion between the sheet (10) and the base sheet material (20);
An ultraviolet coating material 40 coated on the surface of the first sheet 12; Reinforced composite type PVC waterproof sheet.
The method according to claim 1,
The upper sheet member 10 and the lower sheet member 20 were prepared by mixing 58.0 parts by weight of a plasticizer DOP (dioctyl phthalate), 2.5 parts by weight of a stabilizer stabilizer based on 100 parts by weight of a PVC resin, ), 3.0 parts by weight of a UV stabilizer, 0.5 parts by weight of a UV stabilizer, 0.3 parts by weight of a color fading agent, 30.0 parts by weight of a calcium carbonate and 4.0 parts by weight of a pigment.
The method according to claim 1,
The reinforcing core material 30 is woven into a thickness of 1.2 to 1.5 mm and the reinforcing chamber 33 constituting the reinforcing core material is bound at regular intervals in the longitudinal direction parallel to the weft yarn 31 and the warp yarns 32 Wherein the reinforcing composite waterproof sheet is woven continuously in a V-shape.

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