A prefabricated polymer waterproof membrane with a double-layer occlusal overlap

Abstract

The present invention relates to the technical field of waterproof materials and proposes a prefabricated polymer waterproof membrane with a double-layer, interlocking overlap. The polymer waterproof membrane comprises, from top to bottom, a first waterproof layer, a base layer, and a second waterproof layer. The first and second waterproof layers each independently comprise the following raw materials in parts by weight: 85-95 parts PVC resin, 15-30 parts metallocene polyethylene, 45-55 parts plasticizer, 18-22 parts filler, 1-5 parts calcium zinc stabilizer, 1-2 parts antioxidant, 5-8 parts talc, 3-5 parts titanium dioxide, and 2-3 parts compatibilizer. This technical solution solves the problem of poor mechanical properties and aging resistance of waterproof membranes in related technologies.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproof materials, and in particular to a prefabricated polymer waterproof roll material with a bite-type overlapping double-layer waterproof layer. Background Art

[0002] With the acceleration of urbanization and the continuous improvement of people's requirements for the quality of residential and public buildings, the importance of building waterproofing has become increasingly prominent. During the use of buildings, they are subject to long-term erosion by rainwater, groundwater, domestic water, etc. If the waterproofing measures are not in place, it is easy to cause leakage problems, which not only affects the beauty and usability of the building, but may also shorten the service life of the building and even threaten the safety of the building structure. Waterproof membranes have been widely used in the field of building waterproofing due to their excellent performance. However, traditional asphalt waterproof membranes have poor mechanical properties and are prone to cracking, aging and other problems during long-term use. Therefore, it is necessary to develop a waterproof membrane with good mechanical properties and aging resistance to enhance the durability of the waterproof membrane and reduce the maintenance cost of the building. Summary of the Invention

[0003] The present invention provides a prefabricated polymer waterproofing membrane with a double-layer occlusal overlap, which solves the problem of poor mechanical properties and aging resistance of waterproofing membranes in related technologies.

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

[0005] The present invention provides a prefabricated polymer waterproof roll with a double-layer occlusal overlap, wherein the polymer waterproof roll comprises a first waterproof layer, a base layer, and a second waterproof layer from top to bottom.

[0006] One side of the polymer waterproof roll is provided with an overlapping opening, which is formed by separating the first waterproof layer and the second waterproof layer, and is used for bite-type overlapping with the side of another polymer waterproof roll without the overlapping opening.

[0007] On one of the long sides of the roll material, the first waterproof layer and the second waterproof layer are separated from each other to form a layered overlapping edge structure; and the composite integral edge of the other roll material is overlapped in a bite-type manner;

[0008] The first waterproof layer and the second waterproof layer each independently include the following raw materials in parts by weight: 85-95 parts of PVC resin, 15-30 parts of metallocene polyethylene, 45-55 parts of plasticizer, 18-22 parts of filler, 1-5 parts of calcium zinc stabilizer, 1-2 parts of antioxidant, 5-8 parts of talc, 3-5 parts of titanium dioxide, and 2-3 parts of compatibilizer.

[0009] As a further technical solution, the mass ratio of the metallocene polyethylene to the calcium zinc stabilizer is 5~11:1.

[0010] In the present invention, by limiting the mass ratio of metallocene polyethylene to calcium zinc stabilizer to 5-11:1, the mechanical properties and aging resistance of the waterproof membrane are further improved.

[0011] As a further technical solution, the metallocene polyethylene includes a first metallocene polyethylene and a second metallocene polyethylene, and the first metallocene polyethylene and the second metallocene polyethylene have different melt indexes.

[0012] As a further technical solution, the melt index of the first metallocene polyethylene is 0.8 g / 10 min (190°C / 2.16 kg), and the melt index of the second metallocene polyethylene is 3.5 g / 10 min (190°C / 2.16 kg).

[0013] As a further technical solution, the mass ratio of the first metallocene polyethylene to the second metallocene polyethylene is 5-7:1.

[0014] In the present invention, by limiting the mass ratio of the first metallocene polyethylene to the second metallocene polyethylene to 5-7:1, the mechanical properties and aging resistance of the waterproof membrane are further improved.

[0015] As a further technical solution, the filler is calcium carbonate modified by a modifier, and the modifier includes a silane coupling agent and 2-aminophenol-4-sulfonylureamid.

[0016] In the present invention, the calcium carbonate is modified by using a silane coupling agent and 2-aminophenol-4-sulfonylureamid, thereby further improving the mechanical properties and aging resistance of the waterproof membrane.

[0017] As a further technical solution, the preparation method of the filler includes the following steps: dissolving a silane coupling agent and 2-aminophenol-4-sulfonylureamine in an acidic aqueous solution, adding calcium carbonate for modification, and obtaining the filler after filtering and drying.

[0018] As a further technical solution, the modification temperature is 50° C. and the modification time is 6 hours.

[0019] As a further technical solution, the silane coupling agent is γ-methacryloxypropyl-trimethoxysilane.

[0020] As a further technical solution, the acidic aqueous solution is a hydrochloric acid aqueous solution.

[0021] As a further technical solution, the pH of the hydrochloric acid aqueous solution is 4-6.

[0022] As a further technical solution, the amount of the modifier added is 2% to 5% of the mass of the calcium carbonate.

[0023] As a further technical solution, the mass ratio of the silane coupling agent to the 2-aminophenol-4-sulfonylureamid is 4-7:1.

[0024] As a further technical solution, the antioxidant includes one or more of antioxidant 1010, antioxidant 168, and antioxidant DLTP.

[0025] As a further technical solution, the compatibilizer includes one or two of maleic anhydride grafted polyethylene and maleic anhydride grafted polypropylene.

[0026] As a further technical solution, the tire base layer is glass fiber cloth.

[0027] As a further technical solution, the plasticizer is plasticizer DOTP.

[0028] As a further technical solution, the thickness of the first waterproof layer and the second waterproof layer are independently 1.2 mm to 1.5 mm.

[0029] The present invention also provides a method for preparing a prefabricated polymer waterproof roll material with a double-layer occlusal overlap waterproof layer, comprising the following steps:

[0030] S1, melt-extrude the first waterproof layer raw material and the second waterproof layer raw material, and then calender to obtain the first waterproof layer sheet and the second waterproof layer sheet;

[0031] S2. Lay the first waterproof layer sheet and the second waterproof layer sheet on both sides of the base layer respectively, and obtain a bite-type overlapping double-layer prefabricated polymer waterproof membrane after hot pressing.

[0032] The present invention also proposes a construction process for the prefabricated polymer waterproof membrane with a double-layer occlusal overlap waterproof layer, comprising the following steps:

[0033] The first polymer waterproof membrane is laid on the base layer according to the design requirements. The first polymer waterproof membrane is provided with a first waterproof layer and a second waterproof layer on one side of the overlapping opening, which are overlapped on the first waterproof layer and the second waterproof layer on the non-overlapping opening side of the other polymer waterproof membrane respectively, and hot air welded to form a bite-type overlapping structure.

[0034] The working principle and beneficial effects of the present invention are:

[0035] In the present invention, by arranging a layered overlapping edge structure on one side of the waterproof membrane and adopting a bite overlapping method, the tensile strength and shear strength of the overlapping part are enhanced, water vapor penetration is blocked, and the waterproof performance is improved; by adding metallocene polyethylene and calcium zinc stabilizer to the waterproof layer for compounding, the mechanical properties and aging resistance of the waterproof membrane are improved, and the problem of poor mechanical properties and aging resistance of the waterproof membrane is solved. DETAILED DESCRIPTION

[0036] 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.

[0037] In the following examples and comparative examples:

[0038] Metallocene polyethylene model NG 5045.11P, melt index (190°C, 2.16 kg): 0.8 g / 10 min;

[0039] Metallocene polyethylene model 3518CB, melt index (190°C, 2.16kg): 3.5g / 10min;

[0040] PVC resin, model: P440; calcium zinc stabilizer, model GP382, purchased from Qingdao Guangde New Materials Co., Ltd.

[0041] Maleic anhydride grafted polyethylene, model: AT1113A; maleic anhydride grafted polypropylene, model: P613.

[0042] Example 1

[0043] A method for preparing a prefabricated polymer waterproofing membrane with a double-layer occlusal overlap waterproofing layer comprises the following steps:

[0044] S1. 85 parts of PVC resin, 19 parts of metallocene polyethylene 3518CB, 45 parts of plasticizer DOTP, 18 parts of calcium carbonate, 5 parts of calcium zinc stabilizer, 1 part of antioxidant 1010, 5 parts of talc, 3 parts of titanium dioxide, and 2 parts of maleic anhydride grafted polyethylene were melt-extruded and calendered to obtain a first waterproof layer sheet with a thickness of 1.2 mm.

[0045] S2, melt-extrude 85 parts of PVC resin, 19 parts of metallocene polyethylene 3518CB, 45 parts of plasticizer DOTP, 18 parts of calcium carbonate, 5 parts of calcium zinc stabilizer, 1 part of antioxidant 1010, 5 parts of talc, 3 parts of titanium dioxide, and 2 parts of maleic anhydride grafted polyethylene, and calender to obtain a second waterproof layer sheet with a thickness of 1.2 mm;

[0046] S3. Lay the first waterproof layer sheet and the second waterproof layer sheet on both sides of the glass fiber cloth respectively, and obtain a bite-type overlapping double-layer prefabricated polymer waterproof membrane after hot pressing.

[0047] Example 2

[0048] A method for preparing a prefabricated polymer waterproof roll with a double-layer occlusal overlap waterproof layer comprises the following steps:

[0049] S1. Melt-extrude 90 parts of PVC resin, 15 parts of metallocene polyethylene 3518CB, 50 parts of plasticizer DOTP, 20 parts of calcium carbonate, 4 parts of calcium zinc stabilizer, 1 part of antioxidant 168, 7 parts of talc, 4 parts of titanium dioxide, and 3 parts of maleic anhydride grafted polypropylene, and calender to obtain a first waterproof layer sheet with a thickness of 1.3 mm.

[0050] S2, melt-extrude 90 parts of PVC resin, 15 parts of metallocene polyethylene 3518CB, 50 parts of plasticizer DOTP, 20 parts of calcium carbonate, 4 parts of calcium zinc stabilizer, 1 part of antioxidant 168, 7 parts of talc, 4 parts of titanium dioxide, and 3 parts of maleic anhydride grafted polypropylene, and calender to obtain a second waterproof layer sheet with a thickness of 1.3 mm;

[0051] S3. Lay the first waterproof layer sheet and the second waterproof layer sheet on both sides of the glass fiber cloth respectively, and obtain a bite-type overlapping double-layer prefabricated polymer waterproof membrane after hot pressing.

[0052] Example 3

[0053] A method for preparing a prefabricated polymer waterproof roll with a double-layer occlusal overlap waterproof layer comprises the following steps:

[0054] S1. Melt-extrude 95 parts of PVC resin, 30 parts of metallocene polyethylene 3518CB, 55 parts of plasticizer DOTP, 22 parts of calcium carbonate, 1 part of calcium zinc stabilizer, 2 parts of antioxidant DLTP, 8 parts of talc, 5 parts of titanium dioxide, and 3 parts of maleic anhydride grafted polypropylene, and calender to obtain a first waterproof layer sheet with a thickness of 1.5 mm.

[0055] S2, melt-extrude 95 parts of PVC resin, 30 parts of metallocene polyethylene 3518CB, 55 parts of plasticizer DOTP, 22 parts of calcium carbonate, 1 part of calcium zinc stabilizer, 2 parts of antioxidant DLTP, 8 parts of talc, 5 parts of titanium dioxide, and 3 parts of maleic anhydride grafted polypropylene, and calender to obtain a second waterproof layer sheet with a thickness of 1.5 mm;

[0056] S3. Lay the first waterproof layer sheet and the second waterproof layer sheet on both sides of the glass fiber cloth respectively, and obtain a bite-type overlapping double-layer prefabricated polymer waterproof membrane after hot pressing.

[0057] Example 4

[0058] The only difference between this embodiment and embodiment 1 is that the amount of metallocene polyethylene 3518CB added in S1 and S2 is 23 parts, and the amount of calcium zinc stabilizer added is 1 part.

[0059] Example 5

[0060] The only difference between this embodiment and embodiment 1 is that the amount of metallocene polyethylene 3518CB added in S1 and S2 is 20 parts, and the amount of calcium zinc stabilizer added is 4 parts.

[0061] Example 6

[0062] The only difference between this embodiment and embodiment 1 is that the amount of metallocene polyethylene 3518CB added in S1 and S2 is 22 parts, and the amount of calcium zinc stabilizer added is 2 parts.

[0063] Example 7

[0064] The only difference between this example and Example 5 is that the metallocene polyethylene 3518CB in S1 and S2 is replaced by an equal amount of metallocene polyethylene NG 5045.11P.

[0065] Example 8

[0066] The only difference between this embodiment and embodiment 5 is that the metallocene polyethylene in S1 and S2 is composed of metallocene polyethylene NG 5045.11P and metallocene polyethylene 3518CB in a mass ratio of 5:1.

[0067] Example 9

[0068] The only difference between this embodiment and embodiment 5 is that the metallocene polyethylene in S1 and S2 is composed of metallocene polyethylene NG 5045.11P and metallocene polyethylene 3518CB in a mass ratio of 7:1.

[0069] Example 10

[0070] The only difference between this embodiment and embodiment 9 is that calcium carbonate is replaced by an equal amount of modified calcium carbonate.

[0071] The preparation method of modified calcium carbonate comprises the following steps:

[0072] 1.5 g of γ-methacryloyloxypropyl-trimethoxysilane and 0.5 g of 2-aminophenol-4-sulfonylureamid were dissolved in 300 mL of hydrochloric acid aqueous solution (pH 5), 40 g of calcium carbonate was added, and the mixture was stirred at 50°C for 6 h. The modified calcium carbonate was obtained after filtration and drying.

[0073] Example 11

[0074] The only difference between this embodiment and embodiment 10 is that the amount of γ-methacryloxypropyl-trimethoxysilane added is 1.8 g, and the amount of 2-aminophenol-4-sulfonylureamid added is 0.2 g.

[0075] Example 12

[0076] The only difference between this embodiment and embodiment 10 is that the amount of γ-methacryloxypropyl-trimethoxysilane added is 1.6 g, and the amount of 2-aminophenol-4-sulfonylureamid added is 0.4 g.

[0077] Example 13

[0078] The only difference between this embodiment and embodiment 10 is that the amount of γ-methacryloxypropyl-trimethoxysilane added is 1.75 g, and the amount of 2-aminophenol-4-sulfonylureamid added is 0.25 g.

[0079] Comparative Example 1

[0080] The only difference between this comparative example and Example 1 is that metallocene polyethylene 3518CB is not added.

[0081] Comparative Example 2

[0082] The only difference between this comparative example and Example 1 is that the calcium zinc stabilizer is replaced by stabilizer 770.

[0083] The elongation at break of the waterproof membranes prepared in Examples 1 to 13 and Comparative Examples 1 to 2 was measured according to Method B in GB / T 328.9-2007 "Test methods for building waterproof membranes - Part 9: Tensile properties of polymer waterproof membranes";

[0084] Aging resistance: After the waterproof membrane is placed at 80℃ for 168h, the change rate of its elongation at break is measured;

[0085] Change rate of elongation at break = (1-elongation at break after thermal aging / elongation at break before thermal aging) × 100%;

[0086] The test results are shown in Table 1.

[0087] Table 1 Waterproof membrane performance test results

[0088]

[0089] Compared with Example 1, no metallocene polyethylene was added in Comparative Example 1, and the calcium zinc stabilizer was replaced with stabilizer 770 in Comparative Example 2. As a result, the elongation at break of the waterproof membrane prepared in Comparative Examples 1 and 2 was lower than that in Example 1, and the change rate of elongation at break after thermal aging was higher than that in Example 1, indicating that the addition of metallocene polyethylene and calcium zinc stabilizer to the waterproof membrane can improve the mechanical properties and aging resistance of the waterproof membrane.

[0090] Compared with Example 1, the mass ratio of metallocene polyethylene and calcium zinc stabilizer was changed in Examples 4 to 6. As a result, the elongation at break of the waterproof membrane prepared in Examples 5 to 6 was higher than that in Example 1 and Example 4, and the change rate of elongation at break after thermal aging was lower than that in Example 1 and Example 4, indicating that when the mass ratio of metallocene polyethylene and calcium zinc stabilizer is 5 to 11:1, the mechanical properties and aging resistance of the waterproof membrane can be further improved.

[0091] Compared with Example 5, Examples 7 to 9 changed the composition of the metallocene polyethylene. As a result, the elongation at break of the waterproof membrane prepared in Examples 8 to 9 was higher than that in Example 5 and Example 7, and the change rate of elongation at break after thermal aging was lower than that in Example 5 and Example 7, indicating that when the mass ratio of the metallocene polyethylene with a melt index of 3.5 g / 10 min to the metallocene polyethylene with a melt index of 0.8 g / 10 min is 5 to 7:1, the mechanical properties and aging resistance of the waterproof membrane can be further improved.

[0092] Compared with Example 9, in Examples 10 to 13, calcium carbonate was modified using a silane coupling agent and 2-aminophenol-4-sulfonylureamides. As a result, the elongation at break of the waterproof membranes prepared in Examples 12 to 13 was higher than that in Examples 9, 10, and 11, and the change rate of elongation at break after thermal aging was lower than that in Examples 9, 10, and 11, indicating that when the mass ratio of the silane coupling agent to 2-aminophenol-4-sulfonylureamides is 4 to 7:1, the mechanical properties and aging resistance of the waterproof membranes can be further improved.

[0093] 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 prefabricated polymer waterproof membrane with a double-layer occlusal overlap, characterized in that: The polymer waterproof roll material comprises, from top to bottom, a first waterproof layer, a base layer, and a second waterproof layer; The first waterproof layer and the second waterproof layer each independently comprise the following raw materials in parts by weight: 85-95 parts of PVC resin, 15-30 parts of metallocene polyethylene, 45-55 parts of plasticizer, 18-22 parts of filler, 1-5 parts of calcium zinc stabilizer, 1-2 parts of antioxidant, 5-8 parts of talc, 3-5 parts of titanium dioxide, and 2-3 parts of compatibilizer; The metallocene polyethylene includes a first metallocene polyethylene and a second metallocene polyethylene; The first metallocene polyethylene is NG 5045.11P, with a melt index of 0.8 g / 10 min and a melt index test condition of 190°C / 2.16 kg; the second metallocene polyethylene is 3518CB, with a melt index of 3.5 g / 10 min and a melt index test condition of 190°C / 2.16 kg; The mass ratio of the first metallocene polyethylene to the second metallocene polyethylene is 5 to 7:1; The filler is calcium carbonate modified by a modifier, wherein the modifier includes γ-methacryloxypropyl-trimethoxysilane and 2-aminophenol-4-sulfonylethylamide; The mass ratio of the γ-methacryloxypropyl-trimethoxysilane to the 2-aminophenol-4-sulfonylureamid is 4-7:

1.

2. The prefabricated polymer waterproofing membrane with a double-layer occlusal overlap according to claim 1 is characterized in that: The mass ratio of the metallocene polyethylene to the calcium zinc stabilizer is 5-11:

1.

3. The prefabricated polymer waterproofing membrane with a double-layer occlusal overlap according to claim 1 is characterized in that: The amount of the modifier added is 2% to 5% of the mass of the calcium carbonate.

4. The prefabricated polymer waterproofing membrane with a double-layer occlusal overlap according to claim 1 is characterized in that: The antioxidant includes one or more of antioxidant 1010, antioxidant 168, and antioxidant DLTP.

5. The prefabricated polymer waterproofing membrane with a double-layer occlusal overlap according to claim 1 is characterized in that: The compatibilizer includes one or two of maleic anhydride grafted polyethylene and maleic anhydride grafted polypropylene.

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