A special-purpose composite waterproofing membrane and its production process

Abstract

The present invention relates to the technical field of waterproof materials and proposes a special-purpose composite waterproof roll and its production process. The special-purpose composite waterproof roll comprises, from top to bottom, a polypropylene cloth layer, a first adhesive layer, a plastic intermediate layer, a second adhesive layer, and an isolation layer. The plastic intermediate layer is made of a material selected from the group consisting of metal mesh, metal mesh cloth, polymer elastic material, plastic sheet, plastic fabric, and fiber-reinforced paper sheet. The raw materials for the first and second adhesive layers each independently comprise the following components by weight: 40-50 parts asphalt, 10-15 parts SBS elastomer, 8-10 parts naphthenic oil, 25-30 parts guanidine-modified filler, 3-6 parts tackifier, and 0.5-1 part antioxidant. This technical solution solves the problems of poor plasticity, low bonding strength, and poor waterproofing performance of waterproof rolls in related technologies.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproof materials, and in particular to a special-purpose composite waterproof coiled material and a production process thereof. Background Art

[0002] In building waterproofing projects, roof ridges, corners, gutters, eaves, and other complexly shaped areas have always presented challenges. Due to the irregular structures of these areas, traditional waterproofing membranes struggle to adhere perfectly, leading to hollowing, wrinkling, and other issues that pose a risk of leaks. Existing waterproofing materials still lack adaptability, plasticity, and sealing properties, making them difficult to meet the requirements of waterproofing complex areas. Therefore, developing a waterproofing membrane with excellent plasticity and adhesion properties is of great practical significance. Summary of the Invention

[0003] The present invention provides a special-purpose composite waterproofing coil and a production process thereof, which solves the problems of poor plasticity, low bonding strength and poor waterproofing performance of waterproofing coil in related technologies.

[0004] The technical solutions of the present invention are as follows:

[0005] The present invention proposes a special-purpose composite waterproof roll, which includes, from top to bottom, a polypropylene cloth layer, a first adhesive layer, a plastic middle layer, a second adhesive layer, and an isolation layer; the material of the plastic middle layer is one of a metal mesh, a metal mesh cloth, a polymer elastic, a plastic sheet, a plastic fabric, and a fiber-reinforced paper sheet; the raw materials of the first adhesive layer and the second adhesive layer each independently include the following components by weight: 40 to 50 parts of asphalt, 10 to 15 parts of SBS elastomer, 8 to 10 parts of cyclohexane oil, 25 to 30 parts of guanidine-modified filler, 3 to 6 parts of tackifier, and 0.5 to 1 part of antioxidant.

[0006] In the present invention, the middle plastic material layer has good conformability, and the design of the arc-shaped groove allows the roll to flexibly adapt to various complex-shaped building parts (such as ridges, corners, gutters, eaves, roof structures, etc.), ensuring a tight fit without hollows or wrinkles; the adhesive layers on the upper and lower sides of the plastic middle layer provide strong bonding force, ensuring a firm bond between the roll and the base layer, preventing the waterproof layer from falling off, and improving the reliability of the waterproof effect. The composite waterproof roll can adapt to various harsh environments, extend the service life of the waterproof layer, and reduce maintenance costs.

[0007] As a further technical solution, the shape of the plastic middle layer is an arc-shaped groove.

[0008] As a further technical solution, the raw materials of the guanidine-modified filler include a guanidine compound and a filler, wherein the guanidine compound is a phenyl-containing guanidine compound, and the phenyl-containing guanidine compound includes one or two of N-(3-methoxyphenyl)guanidine and N-(4-cyanophenyl)guanidine.

[0009] The present invention finds that after the filler is modified with a guanidine compound containing phenyl, the stability of the adhesive layer structure can be well maintained when subjected to external force, and the bonding strength of the composite waterproof membrane can be further improved.

[0010] As a further technical solution, the mass ratio of the phenyl guanidine compound to the filler is 5-7:50.

[0011] As a further technical solution, the phenyl-containing guanidine compound consists of N-(3-methoxyphenyl)guanidine and N-(4-cyanophenyl)guanidine.

[0012] The present invention finds that when the guanidine compound containing phenyl is composed of N-(3-methoxyphenyl)guanidine and N-(4-cyanophenyl)guanidine, the bonding strength of the composite waterproof membrane can be further improved.

[0013] As a further technical solution, the mass ratio of N-(3-methoxyphenyl)guanidine to N-(4-cyanophenyl)guanidine is 1:3-5.

[0014] As a further technical solution, the filler includes one or both of talc and calcium carbonate.

[0015] As a further technical solution, the preparation method of the guanidine-modified filler is: adding a phenyl-containing guanidine compound to a solvent and mixing uniformly, adding a filler and stirring, filtering and drying to obtain the guanidine-modified filler.

[0016] As a further technical solution, the solvent is dimethyl sulfoxide.

[0017] As a further technical solution, the mass volume ratio of the filler to dimethyl sulfoxide is 1 g:10 mL.

[0018] As a further technical solution, the tackifier includes one or both of petroleum resin and rosin resin.

[0019] As a further technical solution, the antioxidant includes one or more of antioxidant 1010, antioxidant 1076, and antioxidant 168.

[0020] As a further technical solution, the raw materials of the first adhesive layer and the second adhesive layer also contain 1 part of 4-acetaminothiophenol.

[0021] As a further technical solution, the material of the isolation layer is one of a polyethylene film, a polyethylene terephthalate film, and a polypropylene film with a silicone oil layer coated on the surface.

[0022] The present invention also proposes a production process for a special-purpose composite waterproof roll, which comprises a polypropylene cloth layer, a first adhesive layer, a plastic middle layer, a second adhesive layer, and an isolation layer in the order from top to bottom. After coating the first adhesive layer material and the second adhesive layer material, the composite waterproof roll is calendered.

[0023] As a further technical solution, the first adhesive layer material and the second adhesive layer material are both prepared by the following steps: after uniformly mixing asphalt and cyclohexane oil at 140-150° C., heating to 175-185° C., adding the remaining other components and mixing again to obtain.

[0024] As a further technical solution, the first adhesive layer material and the adhesive layer material are both prepared by the following steps: after uniformly mixing asphalt, cyclohexane oil and guanidine-modified filler at 140-150°C, heating to 175-185°C, adding the remaining other components and mixing again to obtain.

[0025] As a further technical solution, the method for preparing the plastic intermediate layer is: pressing arc-shaped grooves at intervals of 10mm to 50mm perpendicular to the longitudinal center line of the plastic intermediate layer material to obtain the plastic intermediate layer.

[0026] As a further technical solution, the thickness of the first adhesive layer and the second adhesive layer are independently 1.0-3.0 mm.

[0027] As a further technical solution, the thickness of the isolation layer is 0.05 mm.

[0028] As a further technical solution, removable isolation films may be provided on the edges of the upper and lower surfaces on both longitudinal sides of the composite waterproof membrane.

[0029] As a further technical solution, the width of the removable isolation film is 50-300 mm.

[0030] As a further technical solution, the width of the contactable isolation membrane is measured from the longitudinal outer edge line of the composite waterproof membrane to the longitudinal center line of the membrane.

[0031] The design of the contactable isolation membrane in the present invention facilitates bonding or overlapping of the composite waterproof membrane with the substrate or other membranes, making construction convenient and quick, improving construction efficiency and reducing labor costs.

[0032] The working principle and beneficial effects of the present invention are:

[0033] In the present invention, a plastic middle layer is provided in the composite waterproof membrane. The plastic middle layer improves the plasticity and surface area of ​​the waterproof membrane, can effectively adapt to building parts with complex shapes, and is suitable for waterproof sealing and flooding treatment of building parts with complex shapes such as ridges, corners, gutters, and eaves, thereby improving construction efficiency and extending the service life of the building; the material of the adhesive layer adopts modified asphalt adhesive material, and the raw material of the modified asphalt adhesive material contains guanidine-modified filler. The material of the adhesive layer in the present invention can further improve the waterproof performance and bonding strength of the composite waterproof membrane. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0035] In the following examples and comparative examples:

[0036] Asphalt: Model 70 # ;

[0037] Naphthenic oil: Model 4006, Shandong Xinjiu New Material Technology Co., Ltd.

[0038] SBS elastomer: Model 1401E, Baling Petrochemical;

[0039] Talc: particle size 325 mesh;

[0040] Metal mesh: Aluminum alloy metal mesh cloth with a circular cross section, a pore size of 5mm, and an equivalent diameter of the aluminum alloy wire of 0.2mm;

[0041] Polypropylene cloth layer: The material is polypropylene cloth, with a thickness of 0.1mm.

[0042] Example 1

[0043] A production process for a special-purpose composite waterproof membrane comprises the following steps:

[0044] S1. Mix 40 parts of asphalt and 8 parts of naphthenic oil at 140°C, heat to 175°C, add 10 parts of SBS elastomer, 25 parts of guanidine-modified talc, 3 parts of C5 petroleum resin, and 0.5 parts of antioxidant 1010, and mix again to obtain an adhesive layer material;

[0045] S2. Press arc-shaped grooves at intervals of 10 mm perpendicular to the longitudinal center line of the metal mesh to obtain a plastic middle layer;

[0046] S3. Apply adhesive layer material to the upper and lower surfaces of the plastic middle layer in the order of polypropylene cloth layer, first adhesive layer, plastic middle layer, second adhesive layer, and isolation layer from top to bottom, forming a first adhesive layer and a second adhesive layer each with a thickness of 1 mm. The polypropylene cloth layer is laminated on the first adhesive layer, and the isolation layer is laminated on the second adhesive layer. The laminate is then calendered to obtain a composite waterproof membrane; the isolation layer is made of a polyethylene film (0.05 mm thick) coated with a silicone oil layer.

[0047] S4. Install a 50mm wide removable isolation film (polyethylene film (0.05mm thick) coated with silicone oil) on the upper and lower edges of both longitudinal sides of the composite waterproof membrane.

[0048] The preparation method of the guanidine-modified talc comprises the following steps: adding 5 g of N-(3-methoxyphenyl)guanidine to 500 mL of dimethyl sulfoxide and mixing them evenly, adding 50 g of talc and stirring for 2 hours, filtering and drying to obtain the guanidine-modified talc.

[0049] Example 2

[0050] A production process for a special-purpose composite waterproof membrane comprises the following steps:

[0051] S1. Mix 50 parts of asphalt and 10 parts of naphthenic oil at 150°C, heat to 185°C, add 15 parts of SBS elastomer, 30 parts of guanidine-modified talc, 6 parts of C5 petroleum resin, and 1 part of antioxidant 1076, and mix again to obtain an adhesive layer material;

[0052] S2. Press arc-shaped grooves at intervals of 50 mm perpendicular to the longitudinal center line of the metal mesh to obtain a plastic middle layer;

[0053] S3. Apply adhesive layer material to the upper and lower surfaces of the plastic intermediate layer in the order of polypropylene cloth layer, first adhesive layer, plastic intermediate layer, second adhesive layer, and isolation layer from top to bottom, forming a first adhesive layer and a second adhesive layer each 3 mm thick. Lay the polypropylene cloth layer on the first adhesive layer and the isolation layer on the second adhesive layer, and calender to obtain a composite waterproof membrane; the isolation layer is made of a polyethylene film (0.05 mm thick) coated with a silicone oil layer.

[0054] S4. Install a 300mm wide removable isolation film (polyethylene film (thickness 0.05mm) coated with silicone oil) on the upper and lower edges of both longitudinal sides of the composite waterproof membrane.

[0055] The preparation method of the guanidine-modified talc comprises the following steps: adding 7 g of N-(3-methoxyphenyl)guanidine to 500 mL of dimethyl sulfoxide and mixing them evenly, adding 50 g of talc and stirring for 2 hours, filtering and drying to obtain the guanidine-modified talc.

[0056] Example 3

[0057] The only difference between this example and Example 1 is that N-(3-methoxyphenyl)guanidine is replaced by an equal amount of N-(4-cyanophenyl)guanidine.

[0058] Example 4

[0059] The only difference between this embodiment and embodiment 1 is that N-(3-methoxyphenyl)guanidine is replaced by an equal amount of 1,6-dicyanoguanidine.

[0060] Example 5

[0061] The only difference between this embodiment and embodiment 1 is that N-(3-methoxyphenyl)guanidine is replaced by N-(3-methoxyphenyl)guanidine and N-(4-cyanophenyl)guanidine in a mass ratio of 1:3.

[0062] Example 6

[0063] The only difference between this embodiment and embodiment 1 is that N-(3-methoxyphenyl)guanidine is replaced by N-(3-methoxyphenyl)guanidine and N-(4-cyanophenyl)guanidine in a mass ratio of 1:5.

[0064] Example 7

[0065] The difference between this embodiment and embodiment 6 is only in step S1. In this embodiment, step S1 is: 40 parts of asphalt and 8 parts of cyclohexane oil are mixed uniformly at 140°C, the temperature is raised to 175°C, 10 parts of SBS elastomer, 25 parts of guanidine-modified filler, 3 parts of C5 petroleum resin, 0.5 parts of antioxidant 1010, and 1 part of 4-acetaminobenzenethiol are added and mixed uniformly to obtain an adhesive layer material.

[0066] Example 8

[0067] The difference between this embodiment and embodiment 7 is only step S1. In this embodiment, step S1 is as follows: 40 parts of asphalt, 8 parts of cyclohexane oil, and 25 parts of guanidine-modified filler are mixed uniformly at 140° C., the temperature is raised to 175° C., 10 parts of SBS elastomer, 3 parts of C5 petroleum resin, 0.5 parts of antioxidant 1010, and 1 part of 4-acetaminothiophenol are added and mixed uniformly to obtain an adhesive layer material.

[0068] Comparative Example 1

[0069] Compared with Example 1, the only difference of this comparative example is that the guanidine-modified talc is replaced by an equal amount of talc.

[0070] Comparative Example 2

[0071] Compared with Example 1, the only difference in this comparative example is that the guanidine-modified talc is replaced with an equal amount of silane coupling agent-modified talc. The specific preparation method of the silane coupling agent KH-550-modified talc is as follows: 5 g of silane coupling agent KH-550 is added to 500 mL of water and mixed evenly, then 50 g of talc is added and stirred for 2 h. The mixture is filtered and dried to obtain a silane coupling agent-modified filler.

[0072] Test Example 1

[0073] According to the test method in GB / T35467-2017 "Wet-laid waterproof membrane", the performance of the composite waterproof membrane in Examples 1 to 8 and Comparative Examples 1 to 2 was measured, and the measurement results are shown in Table 1.

[0074] Table 1 Performance test results of the composite waterproof membranes in Examples 1 to 8 and Comparative Examples 1 to 2

[0075]

[0076] The peeling strength of the composite waterproof membrane and the peeling strength with cement mortar in Examples 1 to 10 all meet the requirements of peeling strength and peeling strength with cement mortar in GB / T35467-2017 "Wet-laid waterproof membrane".

[0077] As shown in Table 1, the bonding strength of the composite waterproof membrane in Example 1 is higher than that in Comparative Examples 1 and 2, indicating that modifying the filler with a guanidine compound can improve the bonding strength of the composite waterproof membrane.

[0078] The bonding strength of the composite waterproof membrane in Examples 5 to 6 is higher than that in Examples 1 and 3 to 4, indicating that the simultaneous addition of N-(3-methoxyphenyl)guanidine and N-(4-cyanophenyl)guanidine to modify the filler in the present invention can further improve the bonding strength of the composite waterproof membrane.

[0079] The bond strength of the composite waterproof membrane in Example 7 was higher than that of Examples 1 and 3-6, indicating that the addition of 4-acetaminothiophenol can further improve the bond strength of the composite waterproof membrane. The bond strength of the composite waterproof membrane in Example 8 was higher than that of Example 7, indicating that the preparation method of the adhesive layer material further defined in the present invention can further improve the bond strength of the composite waterproof membrane.

[0080] Test Example 2

[0081] According to the test method in GB / T35467-2017 "Wet-laid waterproof membrane", the waterproof effect of the composite waterproof membrane in Example 6 and Example 8 was measured. The measurement results are shown in Table 2.

[0082] Table 2 Waterproof effect test results

[0083]

[0084] As shown in Table 2, the waterproof effect of the composite waterproof membrane in Example 8 of the present invention is better than that in Example 6.

[0085] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A special-purpose composite waterproof membrane, characterized in that: From top to bottom, the adhesive comprises a polypropylene cloth layer, a first adhesive layer, a plastic middle layer, a second adhesive layer, and an isolation layer. The plastic middle layer is made of a metal mesh, a metal mesh cloth, a polymer elastomer, a plastic sheet, a plastic fabric, or a fiber-reinforced paper sheet. The first adhesive layer and the second adhesive layer are each independently made of the following components by weight: 40-50 parts asphalt, 10-15 parts SBS elastomer, 8-10 parts naphthenic oil, 25-30 parts guanidine-modified filler, 3-6 parts tackifier, and 0.5-1 part antioxidant. The raw materials of the guanidine-modified filler include a guanidine compound and a filler. The guanidine compound is a phenyl-containing guanidine compound, and the phenyl-containing guanidine compound is composed of N-(3-methoxyphenyl)guanidine and N-(4-cyanophenyl)guanidine in a mass ratio of 1:3~5.

2. The special-purpose composite waterproof membrane according to claim 1, characterized in that: The shape of the plastic middle layer is an arc-shaped groove.

3. The special-purpose composite waterproof membrane according to claim 1, characterized in that: The filler includes one or both of talc and calcium carbonate.

4. The special-purpose composite waterproof membrane according to claim 1, characterized in that: The tackifier includes one or both of petroleum resin and rosin resin.

5. The special-purpose composite waterproof membrane according to claim 1, characterized in that: The antioxidant includes one or more of antioxidant 1010 , antioxidant 1076 , and antioxidant 168 .

6. The special-purpose composite waterproof membrane according to claim 1, characterized in that: The material of the isolation layer is one of a polyethylene film, a polyethylene terephthalate film and a polypropylene film with a silicone oil layer coated on the surface.

7. The production process of a special-purpose composite waterproof membrane according to any one of claims 1 to 6, characterized in that: The composite waterproof roll is obtained by coating the first adhesive layer material and the second adhesive layer material in the order of a polypropylene cloth layer, a first adhesive layer, a plastic middle layer, a second adhesive layer and an isolation layer from top to bottom, and then calendering.

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