Root-piercing resistant double-layered polymer film-based waterproof roll material and method for manufacturing the same

Abstract

This invention belongs to the technical field of waterproof roll materials and provides a double-layered, double polymer film-based waterproof roll material resistant to root penetration and a method for manufacturing the same. The waterproof roll material comprises an anti-tack layer, a first adhesive layer, a first polymer film base layer, a second adhesive layer, a second polymer film base layer, a third adhesive layer, and a separator, arranged in order from top to bottom. The first polymer film base layer and the second polymer film base layer each independently contain polyethylene terephthalate, polypropylene, magnesium silicate, and an anti-aging agent. The first adhesive layer, the second adhesive layer, and the third adhesive layer each independently contain asphalt, ethylene vinyl acetate copolymer, styrene-butadiene-styrene copolymer, a tackifier, and a root inhibitor. The tackifier contains sodium polyacrylate and manganese dioxide. According to the above technical means, the problem of low root penetration resistance of conventional waterproof roll materials is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproof roll materials, and specifically relates to a root puncture-resistant double overlapped double polymer film-based waterproof roll material and a manufacturing method therefor.

Background Art

[0002] Waterproof roll materials are construction products for preventing leakage of rainwater and groundwater from the outside on walls, roofs, etc. of buildings. They are the first barrier for waterproofing the entire construction project and play an important role in the whole construction project. With the continuous expansion of urban construction, constructing gardens and planting flowers and other green plants on rooftops has become a main measure for purifying air, improving and beautifying the environment.

[0003] Because plant roots grow rapidly, they easily penetrate waterproof roll materials, causing roof water leakage, seriously affecting the structure of buildings, and may even lead to safety accidents and quality accidents. Existing waterproof roll material products, due to their single formulation and structure, cannot form a complete root resistance system, and do not have the function of resisting root penetration (puncture). Therefore, developing a waterproof roll material that is resistant to root puncture is of great practical importance and has commercial value.

Summary of Invention

[0004] The present invention provides a root puncture-resistant double overlapped double polymer film-based waterproof roll material and a manufacturing method therefor, which solves the problem of low root puncture resistance performance of waterproof roll materials in the prior art.

[0005] The technical means of the present invention are as follows.

[0006] According to the present invention, there is provided a root puncture-resistant double overlapped double polymer film-based waterproof roll material, which comprises, in order from top to bottom, an anti-adhesion layer, a first adhesive layer, a first polymer film base layer, a second adhesive layer, a second polymer film base layer, a third adhesive layer and a separator, The first polymer film base layer and the second polymer film base layer each independently contain 60-80 parts by weight of polyethylene terephthalate, 40-60 parts of polypropylene, 15-30 parts of magnesium silicate, and 1-3 parts by weight of an antioxidant. The first adhesive layer, the second adhesive layer, and the third adhesive layer each independently contain, by weight, 40 to 60 parts asphalt, 30 to 40 parts ethylene vinyl acetate copolymer, 20 to 30 parts styrene-butadiene-styrene copolymer, 5 to 10 parts tackifier, and 1 to 3 parts root barrier. The aforementioned tackifier is provided as a root-piercing, double-layered, double polymer film-based waterproof roll material containing sodium polyacrylate and manganese dioxide.

[0007] As a further technical measure, the mass ratio of sodium polyacrylate to manganese dioxide is 1:4 to 4:1.

[0008] When the mass ratio of sodium polyacrylate to manganese dioxide is 1:4 to 4:1, the puncture strength and root puncture resistance of the waterproofing roll material can be further improved.

[0009] As a further technical measure, the mass ratio of sodium polyacrylate to manganese dioxide is 2:3.

[0010] When the mass ratio of sodium polyacrylate to manganese dioxide is 2:3, the waterproofing roll material has superior puncture strength and root puncture resistance.

[0011] As a further technical measure, the magnesium silicate is polyvinyl acetate-modified magnesium silicate.

[0012] Modifying magnesium silicate with polyvinyl acetate is advantageous in increasing the dispersion effect of magnesium silicate in the polymer film base layer, further improving the puncture strength and root puncture resistance of the waterproof roll material.

[0013] As a further technical measure, in the polyvinyl acetate-modified magnesium silicate, the mass ratio of polyvinyl acetate to magnesium silicate is 2:13 to 4:11.

[0014] In polyvinyl acetate-modified magnesium silicate, when the mass ratio of polyvinyl acetate to magnesium silicate is 2:13 to 4:11, the puncture strength and root puncture resistance of the waterproofing roll material can be further improved.

[0015] As a further technical means, the method for producing the polyvinyl acetate-modified magnesium silicate involves dissolving polyvinyl acetate in acetone, adding magnesium silicate, mixing uniformly, and drying to obtain the polyvinyl acetate-modified magnesium silicate.

[0016] As a further technical measure, the anti-aging agent is one or more of the anti-aging agent 4010, anti-aging agent DPPD, and anti-aging agent IPPD.

[0017] As a further technical measure, the root inhibitor is either a B2 root inhibitor or a B5 root inhibitor.

[0018] As a further technical measure, the separator is one of the following: polyvinyl chloride film, polyethylene film, or polypropylene film.

[0019] As a further technical measure, the anti-adhesion layer is a polyethylene film or a polypropylene film.

[0020] According to the present invention, a method for manufacturing a root-piercing, double-layered, double polymer film-based waterproof roll material, S1: The steps of obtaining a first polymer film base layer sheet by primary blend extrusion of each component of the first polymer film base layer, and obtaining a second polymer film base layer sheet by secondary blend extrusion of each component of the second polymer film base layer, S2: After softening the asphalt, ethylene vinyl acetate copolymer, styrene-butadiene-styrene copolymer, tackifier, and root barrier are added and mixed uniformly to obtain an adhesive. S3: Steps to obtain a double-layered double polymer film-based waterproof roll material, in which the adhesive is sprayed onto the surfaces of the first polymer film-based layer sheet and the second polymer film-based layer sheet in the order of the first adhesive layer, the first polymer film-based layer, the second adhesive layer, the second polymer film-based layer, and the third adhesive layer, the upper surface of the first adhesive layer is covered with an anti-adhesion layer, the lower surface of the third adhesive layer is covered with a separator, and so on. A manufacturing method including this is provided.

[0021] As a further technical measure, in step S1, when the primary blend extrusion and secondary blend extrusion are performed, the extrusion temperatures are independently set to 170-180°C in the first region, 190-200°C in the second region, and 210-220°C in the third region.

[0022] As a further technical measure, in step S2, when the asphalt is softened, the temperature is 180-190°C.

[0023] The operating principle and beneficial effects of the present invention are as follows. 1. In the present invention, the tackifier in the adhesive layer contains sodium polyacrylate and manganese dioxide, and the tackiness of the adhesive layer is improved by the synergistic effect of organic and inorganic, thereby improving the puncture strength and root puncture resistance of the waterproof roll material. Furthermore, by adding magnesium silicate to the polymer film base layer, the mechanical properties of the waterproof roll material are improved and the physical barrier effect is enhanced, thereby improving the puncture strength and root puncture resistance of the waterproof roll material. [Modes for carrying out the invention]

[0024] Hereinafter, the technical means in the embodiments of the present invention will be clearly and completely described through the embodiments of the present invention. Obviously, the following embodiments are only part of the embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention shall all fall within the protection scope of the present invention.

[0025] In the following examples and comparative examples, unless otherwise specified, the model number of polyethylene terephthalate is RE5329, the model number of styrene-butadiene-styrene copolymer is JH-7546, the model number of polypropylene is HX-3700, the particle size of magnesium silicate is 45 μm, the model number of polyvinyl acetate is LA-5T, the model number of asphalt is 90# asphalt, the model number of ethylene-vinyl acetate copolymer is BJ-806H, the molecular weight of sodium polyacrylate is 5000, the particle size of manganese dioxide is 13 μm, the thickness of the polyethylene film is 0.15 mm, and the thickness of the polypropylene film is 0.15 mm.

[0026] Example 1 A method for producing a root-puncture-resistant double-layered double polymer film-based waterproof roll material comprises the following steps. S1: In parts by weight, 60 parts of polyethylene terephthalate, 40 parts of polypropylene, 15 parts of magnesium silicate, and 1 part of antioxidant 4010 are blended and extruded to obtain a first polymer film-based layer sheet. 60 parts of polyethylene terephthalate, 40 parts of polypropylene, 15 parts of magnesium silicate, and 1 part of antioxidant 4010 are secondarily blended and extruded to obtain a second polymer film-based layer sheet. Here, in the primary blending extrusion, the temperature of the first zone was 170°C, the temperature of the second zone was 190°C, and the temperature of the third zone was 210°C; in the secondary blending extrusion, the temperature of the first zone was 170°C, the temperature of the second zone was 190°C, and the temperature of the third zone was 210°C. S2: After softening 40 parts of asphalt at 180°C, 30 parts of ethylene vinyl acetate copolymer, 20 parts of styrene-butadiene-styrene copolymer, 0.5 parts of sodium polyacrylate, 4.5 parts of manganese dioxide, and 1 part of B2 root barrier were added and mixed uniformly to obtain an adhesive. S3: Adhesives were sprayed onto the surfaces of the first polymer film base layer sheet and the second polymer film base layer sheet in the order of the first adhesive layer, first polymer film base layer, second adhesive layer, second polymer film base layer, and third adhesive layer. The upper surface of the first adhesive layer was covered with a polyethylene film, and the lower surface of the third adhesive layer was covered with a polypropylene film to obtain a double-layered double polymer film base waterproof roll material.

[0027] Example 2 The method for manufacturing a root-piercing, double-layered, double polymer film-based waterproof roll material includes the following steps. S1: A blend of 80 parts by weight of polyethylene terephthalate, 60 parts by weight of polypropylene, 30 parts by weight of magnesium silicate, and 3 parts by weight of antioxidant 4010 was extruded to obtain a first polymer film base layer sheet. A second blend of 80 parts by weight of polyethylene terephthalate, 60 parts by weight of polypropylene, 30 parts by weight of magnesium silicate, and 3 parts by weight of antioxidant 4010 was extruded to obtain a second polymer film base layer sheet. In the primary blend extrusion, the temperature in the first region was 180°C, the temperature in the second region was 200°C, and the temperature in the third region was 220°C. In the secondary blend extrusion, the temperature in the first region was 180°C, the temperature in the second region was 200°C, and the temperature in the third region was 220°C. S2: After softening 60 parts of asphalt at 190°C, 40 parts of ethylene vinyl acetate copolymer, 30 parts of styrene-butadiene-styrene copolymer, 1 part of sodium polyacrylate, 9 parts of manganese dioxide, and 3 parts of B2 root barrier were added and mixed uniformly to obtain an adhesive. S3: Adhesives were sprayed onto the surfaces of the first polymer film base layer sheet and the second polymer film base layer sheet in the order of the first adhesive layer, first polymer film base layer, second adhesive layer, second polymer film base layer, and third adhesive layer. The upper surface of the first adhesive layer was covered with a polyethylene film, and the lower surface of the third adhesive layer was covered with a polypropylene film to obtain a double-layered double polymer film base waterproof roll material.

[0028] Example 3 In this embodiment, the composition is the same as in Example 2, except that the amount of sodium polyacrylate is 9 parts by weight and manganese dioxide is 1 part by weight.

[0029] Example 4 In this embodiment, the composition is the same as in Example 2, except that the amount of sodium polyacrylate is 2 parts by weight and the amount of manganese dioxide is 8 parts by weight.

[0030] Example 5 In this embodiment, the composition is the same as in Example 2, except that the amount of sodium polyacrylate is 8 parts by weight and the amount of manganese dioxide is 2 parts by weight.

[0031] Example 6 In this embodiment, the composition is the same as in Example 2, except that the amount of sodium polyacrylate is 4 parts by weight and the amount of manganese dioxide is 6 parts by weight.

[0032] Example 7 In this embodiment, magnesium silicate is polyvinyl acetate-modified magnesium silicate, and the method for producing polyvinyl acetate-modified magnesium silicate is the same as in Example 6, except that 3 parts polyvinyl acetate is dissolved in 20 parts acetone, 27 parts magnesium silicate is added, the mixture is uniformly mixed, and dried to obtain polyvinyl acetate-modified magnesium silicate.

[0033] Example 8 In this embodiment, the composition is the same as in Example 7, except that the parts by weight of polyvinyl acetate is 9 parts and the parts by weight of magnesium silicate is 21 parts.

[0034] Example 9 In this embodiment, the composition is the same as in Example 7, except that the parts by weight of polyvinyl acetate is 4 parts and the parts by weight of magnesium silicate is 26 parts.

[0035] Example 10 In this embodiment, the composition is the same as in Example 7, except that the parts by weight of polyvinyl acetate are 8 parts and the parts by weight of magnesium silicate are 22 parts.

[0036] Comparative Example 1 In this comparative example, the procedure is the same as in Example 1, except that magnesium silicate is not added.

[0037] Comparative Example 2 In this comparative example, sodium polyacrylate is not added, and the amount of manganese dioxide added is 5 parts by weight, otherwise it is the same as in Example 1.

[0038] Comparative Example 3 In this comparative example, manganese dioxide is not added, and the amount of sodium polyacrylate added is 5 parts by weight, otherwise it is the same as in Example 1.

[0039] Comparative Example 4 In this comparative example, the procedure is the same as in Example 1, except that manganese dioxide and sodium polyacrylate are not added.

[0040] Experimental Example 1: Puncture Strength The puncture strength of the double-layered, double polymer film-based waterproof roll materials manufactured in Examples 1-10 and Comparative Examples 1-4 was measured according to GB / T 23457-2017 "Pre-laid Waterproof Roll Materials". The measurement results are shown in Table 1 below.

[0041] Table 1: Measurement results of puncture strength [Table 1]

[0042] As can be seen from the comparison between Example 1 and Comparative Example 1, adding magnesium silicate to the polymer film base layer improves the puncture strength of the waterproof roll material. As can be seen from the comparison between Example 1 and Comparative Examples 2-4, the synergistic effect of sodium polyacrylate and manganese dioxide improves the puncture strength of the waterproof roll material. As can be seen from the comparison between Examples 2-3 and Examples 4-6, when the mass ratio of sodium polyacrylate to manganese dioxide is 1:4 to 4:1, the puncture strength of the waterproof roll material is further improved. As can be seen from the comparison between Example 6 and Examples 4-5, when the mass ratio of sodium polyacrylate to manganese dioxide is 2:3, the waterproof roll material has even better puncture strength. As can be seen from the comparison between Example 6 and Examples 7-10, modifying magnesium silicate with polyvinyl acetate is advantageous for further improving the puncture strength of the waterproof roll material. As can be seen from the comparison between Examples 9-10 and Examples 7-8, the puncture strength of the waterproof roll material is further improved when the mass ratio of polyvinyl acetate to magnesium silicate is 2:13 to 4:11.

[0043] Experimental Example 2: Root Penetration Resistance The double-layered, double polymer film-based waterproof roll materials manufactured in Examples 1 to 10 were tested for root puncture resistance according to GB / T 35468-2017 "Root-Puncture Resistant Waterproof Roll Materials for Planted Roofs". The test period was 6 months, and the measurement results are shown in Table 2 below.

[0044] Table 2: Measurement results for root penetration resistance [Table 2]

[0045] The foregoing are merely preferred embodiments of the present invention and do not limit it. Any modifications, equivalent substitutions, improvements, etc., made within the scope of the spirit and principles of the present invention should all be within the scope of protection of the present invention.

Claims

1. A root-piercing, double-layered, double polymer film-based waterproof roll material comprising, in order from top to bottom, an anti-adhesion layer, a first adhesive layer, a first polymer film base layer, a second adhesive layer, a second polymer film base layer, a third adhesive layer, and a separator, The first polymer film base layer and the second polymer film base layer each independently contain 60 to 80 parts by weight of polyethylene terephthalate, 40 to 60 parts by weight of polypropylene, 15 to 30 parts by weight of magnesium silicate, and 1 to 3 parts by weight of an antioxidant. The first adhesive layer, the second adhesive layer, and the third adhesive layer each independently contain, by weight, 40 to 60 parts asphalt, 30 to 40 parts ethylene vinyl acetate copolymer, 20 to 30 parts styrene-butadiene-styrene copolymer, 5 to 10 parts tackifier, and 1 to 3 parts root barrier. The aforementioned tackifier is characterized by containing sodium polyacrylate and manganese dioxide, and is a root-piercing, double-layered, double polymer film-based waterproof roll material.

2. The root-piercing double-layered double polymer film-based waterproof roll material according to claim 1, characterized in that the mass ratio of sodium polyacrylate to manganese dioxide is 1:4 to 4:

1.

3. The root-piercing double-layered double polymer film-based waterproof roll material according to claim 2, characterized in that the mass ratio of sodium polyacrylate to manganese dioxide is 2:

3.

4. The aforementioned magnesium silicate is polyvinyl acetate-modified magnesium silicate, as described in claim 1, for a root-piercing, double-layered, double polymer film-based waterproof roll material.

5. The puncture-resistant double-layered double polymer film-based waterproof roll material according to claim 4, characterized in that the polyvinyl acetate-modified magnesium silicate has a mass ratio of 2:13 to 4:11 between polyvinyl acetate and magnesium silicate.

6. The aforementioned anti-aging agent is one or more of the anti-aging agent 4010, anti-aging agent DPPD, and anti-aging agent IPPD, as described in claim 1, for a root-piercing resistant double-layered double polymer film-based waterproof roll material.

7. The root-piercing double-layered double polymer film-based waterproof roll material according to claim 1, characterized in that the root-piercing agent is a B2 root-piercing agent or a B5 root-piercing agent.

8. A method for producing a root-piercing, double-layered, double polymer film-based waterproof roll material according to any one of claims 1 to 7, S1: The steps of obtaining a first polymer film base layer sheet by primary blend extrusion of each component of the first polymer film base layer, and obtaining a second polymer film base layer sheet by secondary blend extrusion of each component of the second polymer film base layer, S2: After softening the asphalt, add ethylene vinyl acetate copolymer, styrene-butadiene-styrene copolymer, tackifier and root barrier, and mix uniformly to obtain an adhesive. S3: The steps of obtaining a double-layered double polymer film-based waterproof roll material, which involves spraying the adhesive onto the surfaces of the first polymer film-based layer sheet and the second polymer film-based layer sheet in the order of the first adhesive layer, the first polymer film-based layer, the second adhesive layer, the second polymer film-based layer, and the third adhesive layer, covering the upper surface of the first adhesive layer with an anti-tack layer, and covering the lower surface of the third adhesive layer with a separator, and A manufacturing method characterized by including the following.

9. The manufacturing method according to claim 8, characterized in that, in step S1, when the primary blend extrusion and secondary blend extrusion are performed, the extrusion temperatures are independently set to a first region of 170 to 180°C, a second region of 190 to 200°C, and a third region of 210 to 220°C.

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