Mortise and tenon structure waterproof coiled material and preparation method thereof

Abstract

The invention relates to the technical field of waterproof coiled materials, and provides a waterproof coiled material with a mortise and tenon structure and a preparation method of the waterproof coiled material with the mortise and tenon structure. Each composite waterproof coiled material prefabricated body comprises an isolating membrane layer I, a first modified asphalt self-adhesive layer, a macromolecular matrix layer and a second modified asphalt self-adhesive layer which are sequentially arranged from bottom to top, and the compounding is that the second modified asphalt self-adhesive layers of two same composite waterproof coiled material prefabricated bodies are compounded; the connecting surfaces of the two same composite waterproof coiled material preforms are staggered, a lap joint structure is formed at the staggered position, an isolating membrane layer II is arranged at the staggered position, and the waterproof coiled material with the mortise and tenon joint structure is obtained. By means of the technical scheme, the problems that in the prior art, the peel strength of the waterproof roll is low, and the peel strength is obviously reduced after water soaking are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproof coiled materials, and in particular to a mortise and tenon structure waterproof coiled material and a preparation method thereof. Background Art

[0002] With the continuous improvement of building waterproofing technology, waterproof membranes, as an important waterproof material, are widely used in the waterproofing and moisture-proofing fields of construction projects such as roofs, basements, bridges, and tunnels.

[0003] The main types of waterproofing membranes are: SBS waterproofing membranes, polypropylene waterproofing membranes, EPDM waterproofing membranes, PVC waterproofing membranes, TPO waterproofing membranes, etc. Among them, SBS modified asphalt waterproofing membranes are widely used in the field of building waterproofing as a kind of waterproofing material. They have the advantages of compact structure, corrosion resistance, good waterproofing performance, convenient and fast construction, and low repair cost. However, due to the long-term presence of water in the underground engineering process, the peeling strength of the waterproofing membrane will be significantly reduced, resulting in shedding and peeling problems, resulting in a decrease in the service life of the waterproofing membrane. Summary of the invention

[0004] The present invention provides a mortise and tenon structure waterproof coiled material and a preparation method thereof, which solves the problem in the related art that the peeling strength of the waterproof coiled material is low and the peeling strength is significantly reduced after being immersed in water.

[0005] The technical solution of the present invention is as follows: The present invention provides a mortise and tenon structure waterproofing membrane, which is formed by compounding two identical composite waterproofing membrane preforms, wherein the composite waterproofing membrane preform comprises an isolation membrane layer I, a first modified asphalt self-adhesive layer, a polymer carcass layer, and a second modified asphalt self-adhesive layer, which are sequentially arranged from bottom to top. The compounding is the compounding of the second modified asphalt self-adhesive layers of the two identical composite waterproofing membrane preforms. During the compounding process, the joint surfaces of the two identical composite waterproofing membrane preforms are staggered, and an overlap structure is formed at the staggered position. An isolation membrane layer II is arranged at the staggered position to obtain the mortise and tenon structure waterproofing membrane; The material for the modified asphalt self-adhesive layer includes the following raw materials in parts by weight: 60-70 parts of petroleum asphalt, 25-30 parts of softener, 20-25 parts of tackifier, 30-40 parts of filler, 8-10 parts of SBS modifier, 2-4 parts of 3,4,5-tricarboxylic acid aniline, 1-3 parts of 2-aminocarboxylmethyl benzoic acid, and 1-1.5 parts of lubricant; the polymer carcass layer includes one of a polyester carcass layer, a PET carcass layer, and a PE carcass layer.

[0006] As a further technical solution, the mass ratio of the 3,4,5-tricarboxylic acid aniline to 2-aminocarboxymethyl benzoic acid is 2:1.

[0007] As a further technical solution, the SBS modifier consists of SBS 4303 and SBS1901.

[0008] In the present invention, it is found that when the SBS modifier is composed of SBS 4303 and SBS1901, the peel strength between the overlapping edge rolls of the mortise and tenon structure waterproof roll can be further improved and the change rate of the peel strength after immersion in water can be reduced.

[0009] As a further technical solution, the mass ratio of SBS 4303 to SBS1901 is 5:3.

[0010] As a further technical solution, the petroleum asphalt is 90# petroleum asphalt.

[0011] As a further technical solution, the tackifier includes one or more of C9 petroleum resin, C5 petroleum resin and rosin.

[0012] As a further technical solution, the lubricant includes one or two of wax powder, calcium stearate and stearic acid.

[0013] As a further technical solution, the softener is one or more of polyethylene wax, glycerol, and polyethylene glycol.

[0014] As a further technical solution, the filler consists of talc and kaolin.

[0015] The present invention also includes a method for preparing a mortise and tenon structure waterproofing coiled material, comprising the following steps: S1, stirring petroleum asphalt and softener to obtain mixture I; S2, adding SBS modifier and lubricant to mixture I and stirring evenly to obtain mixture II; S3, adding filler, 3,4,5-tricarboxylic acid aniline and 2-aminocarboxyl methyl benzoic acid to the mixture II and stirring evenly to obtain a modified asphalt self-adhesive layer material; S4, coating the upper and lower surfaces of the polymer carcass layer with modified asphalt self-adhesive layer materials to form a first modified asphalt self-adhesive layer and a second modified asphalt self-adhesive layer, and obtaining a semi-finished mortise and tenon structure waterproofing membrane; S5, covering the first modified asphalt self-adhesive layer of the semi-finished mortise and tenon structure waterproof membrane with an isolation film I to form an isolation film layer, thereby obtaining a mortise and tenon structure waterproof membrane preform; S6, compounding the second modified asphalt self-adhesive layer of the mortise and tenon structure waterproof membrane preform with the second modified asphalt self-adhesive layer of another mortise and tenon structure waterproof membrane preform, during the compounding process, the joint surfaces of the two identical composite waterproof membrane preforms are staggered, and an overlap structure is formed at the staggered position, and an isolation membrane layer II is arranged at the staggered position to obtain the mortise and tenon structure waterproof membrane. As a further technical solution, the width of the overlapping structure is 8 to 10 cm.

[0016] As a further technical solution, the coating temperature in S4 is 180-200°C.

[0017] As a further technical solution, the thickness of the first modified asphalt self-adhesive layer and the second modified asphalt self-adhesive layer are the same.

[0018] As a further technical solution, the thickness of the mortise and tenon structure waterproof membrane is 4 mm.

[0019] As a further technical solution, the thickness of the polymer carcass layer is 0.5 mm.

[0020] As a further technical solution, the thickness of the isolation layer is 0.04 mm.

[0021] The working principle and beneficial effects of the present invention are: In the present invention, the waterproof membrane is a prefabricated, staggered overlapped, double polymer membrane-based mortise and tenon structure waterproof membrane, and has the following characteristics: the modified asphalt self-adhesive layer in the present invention adopts a unique formula, with 3,4,5-tricarboxylic acid aniline and 2-aminocarboxymethylbenzoic acid added, and the prepared mortise and tenon structure waterproof membrane has high peeling strength between the overlapping edge membranes and can still maintain a high peeling strength after being immersed in water. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Figure 1 It is a schematic structural diagram of the mortise and tenon structure waterproof membrane in Example 1 of the present invention. DETAILED DESCRIPTION

[0024] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0025] In the following examples and comparative examples Separator film I and separator film II are both the same polyethylene film; SBS 4303, Yanshan Petrochemical; SBS 1901, Hunan Yueyang Petrochemical General Plant; Wax powder, model: TITAN 7686, Honeywell International Inc.; Kaolin, silica content 89% by mass; Talc, silicon dioxide mass content 60%.

[0026] Example 1 A method for preparing a mortise and tenon structure waterproof coiled material comprises the following steps: S1, stirring 60 parts of 90# petroleum asphalt and 25 parts of polyethylene wax to obtain a mixture I; S2. Add 4 parts of SBS 4303, 4 parts of SBS 1901 and 1 part of wax powder to mixture I and stir evenly to obtain mixture II; S3, adding 30 parts of filler (composed of 600 mesh talc and 600 mesh kaolin in a mass ratio of 1:3), 4 parts of 3,4,5-tricarboxylic acid aniline and 1 part of 2-aminocarboxylmethyl benzoic acid to the mixture II, stirring evenly, to obtain a modified asphalt self-adhesive layer material; S4, coating the upper and lower surfaces of the polyester carcass layer with a modified asphalt self-adhesive layer material at 180° C., and setting the thickness by a thickness setting device to form a first modified asphalt self-adhesive layer and a second modified asphalt self-adhesive layer, and obtaining a semi-finished mortise and tenon structure waterproof membrane; S5, covering the first modified asphalt self-adhesive layer of the semi-finished mortise and tenon structure waterproof membrane with a polyethylene film to form an isolation film layer, thereby obtaining a mortise and tenon structure waterproof membrane preform; S6. Compound the second modified asphalt self-adhesive layer of the mortise and tenon structure waterproof membrane preform with the second modified asphalt self-adhesive layer of another mortise and tenon structure waterproof membrane preform. During the compounding process, the joint surfaces of the two identical composite waterproof membrane preforms are staggered to form an overlap structure (the overlap structure width is 10 cm) at the staggered position, and an isolation film layer II is arranged at the staggered position to obtain a mortise and tenon structure waterproof membrane with a thickness of 4 mm; wherein the thickness of the polyester matrix layer is 0.5 mm, the thickness of the polyethylene film is 0.04 mm, the thickness of the first modified asphalt self-adhesive layer and the second modified asphalt self-adhesive layer are the same, and the structural schematic diagram of the mortise and tenon structure waterproof membrane in this embodiment is as shown in FIG. Figure 1 shown.

[0027] Example 2 A method for preparing a mortise and tenon structure waterproof coiled material comprises the following steps: S1, stirring 65 parts of 90# petroleum asphalt and 28 parts of propylene glycol to obtain a mixture I; S2, adding 4.5 parts of SBS 4303, 4.5 parts of SBS 1901 and 1.2 parts of stearic acid to the mixture I and stirring evenly to obtain a mixture II; S3, adding 35 parts of filler (composed of 600 mesh talc and 600 mesh kaolin in a mass ratio of 1:3), 2 parts of 3,4,5-tricarboxylic acid aniline and 1.5 parts of 2-aminocarboxylmethyl benzoic acid to the mixture II, and stirring evenly to obtain a modified asphalt self-adhesive layer material; S4, coating the upper and lower surfaces of the polyester carcass layer with a modified asphalt self-adhesive layer material at 190° C., and setting the thickness by a thickness setting device to form a first modified asphalt self-adhesive layer and a second modified asphalt self-adhesive layer, to obtain a semi-finished mortise and tenon structure waterproof membrane; S5, covering the first modified asphalt self-adhesive layer of the semi-finished mortise and tenon structure waterproof membrane with an isolation film I to form an isolation film layer, thereby obtaining a mortise and tenon structure waterproof membrane preform; S6. Compound the second modified asphalt self-adhesive layer of the mortise and tenon structure waterproof membrane preform with the second modified asphalt self-adhesive layer of another mortise and tenon structure waterproof membrane preform. During the compounding process, the joint surfaces of the two identical composite waterproof membrane preforms are staggered to form an overlapping structure (the overlapping structure width is 10 cm) at the staggered position, and an isolation film layer II is arranged at the staggered position to obtain a mortise and tenon structure waterproof membrane with a thickness of 4 mm; wherein the thickness of the polyester matrix layer is 0.5 mm, the thickness of the polyethylene film is 0.04 mm, and the thickness of the first modified asphalt self-adhesive layer is the same as that of the second modified asphalt self-adhesive layer.

[0028] Example 3 A method for preparing a mortise and tenon structure waterproof coiled material comprises the following steps: S1, stirring 70 parts of 90# petroleum asphalt and 30 parts of polyethylene glycol to obtain a mixture I; S2, adding 5 parts of SBS 4303, 5 parts of SBS 1901 and 1.5 parts of calcium stearate to the mixture I and stirring evenly to obtain a mixture II; S3, adding 40 parts of filler (composed of 600 mesh talc and 600 mesh kaolin in a mass ratio of 1:3), 3 parts of 3,4,5-tricarboxylic acid aniline and 2 parts of 2-aminocarboxylmethyl benzoic acid to the mixture II, and stirring evenly to obtain a modified asphalt self-adhesive layer material; S4, coating the upper and lower surfaces of the polyester carcass layer with a modified asphalt self-adhesive layer material at 200° C., and setting the thickness by a thickness setting device to form a first modified asphalt self-adhesive layer and a second modified asphalt self-adhesive layer, thereby obtaining a semi-finished mortise and tenon structure waterproofing membrane; S5, covering the first modified asphalt self-adhesive layer of the semi-finished mortise and tenon structure waterproof membrane with an isolation film I to form an isolation film layer, thereby obtaining a mortise and tenon structure waterproof membrane preform; S6. Compound the second modified asphalt self-adhesive layer of the mortise and tenon structure waterproof membrane preform with the second modified asphalt self-adhesive layer of another mortise and tenon structure waterproof membrane preform. During the compounding process, the joint surfaces of the two identical composite waterproof membrane preforms are staggered to form an overlapping structure (the overlapping structure width is 10 cm) at the staggered position, and an isolation film layer II is arranged at the staggered position to obtain a mortise and tenon structure waterproof membrane with a thickness of 4 mm; wherein the thickness of the polyester matrix layer is 0.5 mm, the thickness of the polyethylene film is 0.04 mm, and the thickness of the first modified asphalt self-adhesive layer is the same as that of the second modified asphalt self-adhesive layer.

[0029] Example 4 The difference between this embodiment and embodiment 1 is that the amount of 3,4,5-tricarboxylic acid aniline is 2.5 parts and the amount of 2-aminocarboxymethylbenzoic acid is 2.5 parts.

[0030] Example 5 The difference between this embodiment and embodiment 1 is that the amount of 3,4,5-tricarboxylic acid aniline is 2 parts and the amount of 2-aminocarboxymethylbenzoic acid is 3 parts.

[0031] Example 6 The difference between this embodiment and embodiment 1 is that the amount of SBS 4303 is 5 and the amount of SBS 1901 is 3.

[0032] Example 7 The difference between this embodiment and embodiment 1 is that the amount of SBS 4303 is 6 and the amount of SBS 1901 is 2.

[0033] Example 8 The difference between this embodiment and embodiment 1 is that SBS1901 is replaced with an equal amount of SBS 4303.

[0034] Example 9 The only difference between this embodiment and Embodiment 1 is that SBS 4303 is replaced by an equal amount of SBS1901.

[0035] Example 10 The only difference between this embodiment and Embodiment 1 is that SBS 4303 is replaced by an equal amount of SBS 4402.

[0036] Comparative Example 1 The difference between this comparative example and Example 1 is that 3,4,5-tricarboxylic acid aniline is replaced by an equal amount of 2-aminocarboxymethylbenzoic acid.

[0037] Comparative Example 2 The difference between this comparative example and Example 1 is that 2-aminocarboxylmethylbenzoic acid is replaced by an equal amount of 3,4,5-tricarboxylic acid aniline.

[0038] Comparative Example 3 The only difference between this comparative example and Example 1 is that 3,4,5-tricarboxylic acid aniline and 2-aminocarboxymethyl benzoic acid are not added.

[0039] Test example The mortise and tenon structure waterproof membranes prepared in Examples 1 to 10 and Comparative Examples 1 to 3 were tested for peel strength between overlapping membranes and peel strength after immersion in 23±2°C water for 168 hours and then drying the surface water according to the test method in GB 23441-2009 "Self-adhesive polymer modified asphalt waterproof membranes". The peel strength change rate was calculated using the following formula: Peel strength change rate = (peel strength after immersion in water / peel strength before immersion in water - 1) × 100%. The test results are shown in Table 1.

[0040] Table 1 Performance test results of the mortise and tenon structure waterproof membranes prepared in Examples 1 to 10 and Comparative Examples 1 to 3

[0041] The waterproof membranes in Examples 1 to 10 of the present invention were all impermeable to water at 0.3 MPa after a test of 120 minutes.

[0042] Compared with Example 1, Comparative Example 1 does not add 3,4,5-tricarboxylic acid aniline, Comparative Example 2 does not add 2-aminocarboxymethyl benzoic acid, and Comparative Example 3 does not add 3,4,5-tricarboxylic acid aniline and 2-aminocarboxymethyl benzoic acid. As a result, the un-immersed peel strength of the mortise and tenon structure waterproof membrane in Comparative Examples 1 to 3 is lower than that in Example 1, and the peel strength change rate is greater than that in Example 1, indicating that 3,4,5-tricarboxylic acid aniline and 2-aminocarboxymethyl benzoic acid can both improve the peel strength of the mortise and tenon structure waterproof membrane and reduce the peel strength change rate after immersion in water.

[0043] Compared with Example 1, Examples 4 to 5 change the mass ratio of 3,4,5-tricarboxylic acid aniline and 2-aminocarboxymethyl benzoic acid. As a result, the un-immersed peel strength of the mortise and tenon structure waterproof membrane in Example 4 is lower than that in Example 1, and the peel strength change rate is greater than that in Example 1, indicating that when the mass ratio of 3,4,5-tricarboxylic acid aniline and 2-aminocarboxymethyl benzoic acid is 1:1, the peel strength of the mortise and tenon structure waterproof membrane can be further improved and the peel strength change rate after immersion can be reduced.

[0044] Compared with Example 1, Example 8 only adds SBS 4303, Example 9 only adds SBS1901, Example 10 replaces SBS 4303 with an equal amount of SBS 4402, and Examples 6-7 change the mass ratio of SBS 4303 and SBS 1901. As a result, the un-immersed peel strength of the mortise and tenon structure waterproof membrane in Examples 8-10 is lower than that in Example 1, Example 6 and Example 7, and the peel strength change rate is greater than that in Example 1, Example 6, Example 7 and Example 10, indicating that the SBS modifier composed of SBS 4303 and SBS 1901 can improve the peel strength of the mortise and tenon structure waterproof membrane and reduce the peel strength change rate after immersion.

[0045] By comparing Example 1 with Examples 6 and 7, it is found that the un-watered peeling strength of the mortise and tenon structure waterproof membrane in Example 6 is higher than that in Example 1 and Example 7, and the peeling strength change rate is lower than that in Example 1 and Example 7, indicating that when the mass ratio of SBS 4303 to SBS1901 is 5:3, the peeling strength of the mortise and tenon structure waterproof membrane can be further improved and the absolute value of the peeling strength change rate after water immersion can be reduced.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mortise and tenon structure waterproofing membrane, which is composed of two identical composite waterproofing membrane prefabricated bodies, characterized in that: The composite waterproofing membrane preform comprises an isolation membrane layer I, a first modified asphalt self-adhesive layer, a polymer carcass layer, and a second modified asphalt self-adhesive layer, which are sequentially arranged from bottom to top. The composite is a composite of the second modified asphalt self-adhesive layer of two identical composite waterproofing membrane preforms. During the composite process, the joint surfaces of the two identical composite waterproofing membrane preforms are staggered, and an overlap structure is formed at the staggered position. An isolation membrane layer II is arranged at the staggered position to obtain a mortise and tenon structure waterproofing membrane; The material for the modified asphalt self-adhesive layer includes the following raw materials in parts by weight: 60-70 parts of petroleum asphalt, 25-30 parts of softener, 20-25 parts of tackifier, 30-40 parts of filler, 8-10 parts of SBS modifier, 2-4 parts of 3,4,5-tricarboxylic acid aniline, 1-3 parts of 2-aminocarboxylmethyl benzoic acid, and 1-1.5 parts of lubricant; the polymer carcass layer includes one of a polyester carcass layer, a PET carcass layer, and a PE carcass layer.

2. The mortise and tenon structure waterproofing membrane according to claim 1, characterized in that: The SBS modifier consists of SBS4303 and SBS1901.

3. The mortise and tenon structure waterproofing membrane according to claim 1, characterized in that: The petroleum asphalt includes.

4. The mortise and tenon structure waterproofing membrane according to claim 1, characterized in that: The tackifier includes one or more of C9 petroleum resin, C petroleum resin and rosin.

5. The mortise and tenon structure waterproofing membrane according to claim 1, characterized in that: The lubricant includes one or two of wax powder, calcium stearate and stearic acid.

6. The mortise and tenon structure waterproofing membrane according to claim 1, characterized in that: The softener is one or more of polyethylene wax, glycerol and polyethylene glycol.

7. The mortise and tenon structure waterproofing membrane according to claim 1, characterized in that: The filler consists of talc and kaolin.

8. The mortise and tenon structure waterproofing membrane according to claim 1, characterized in that: The method for preparing the mortise and tenon structure waterproof coiled material comprises the following steps: S1, stirring petroleum asphalt and softener to obtain mixture I; S2, adding SBS modifier and lubricant to mixture I and stirring evenly to obtain mixture II; S3, adding filler, 3,4,5-tricarboxylic acid aniline and 2-aminocarboxyl methyl benzoic acid to the mixture II and stirring evenly to obtain a modified asphalt self-adhesive layer material; S4, coating the upper and lower surfaces of the polymer carcass layer with modified asphalt self-adhesive layer materials to form a first modified asphalt self-adhesive layer and a second modified asphalt self-adhesive layer, and obtaining a semi-finished mortise and tenon structure waterproofing membrane; S5, covering the first modified asphalt self-adhesive layer of the semi-finished mortise and tenon structure waterproof membrane with an isolation film I to form an isolation film layer, thereby obtaining a mortise and tenon structure waterproof membrane preform; S6. Compound the second modified asphalt self-adhesive layer of the mortise and tenon structure waterproof membrane preform with the second modified asphalt self-adhesive layer of another mortise and tenon structure waterproof membrane preform. During the compounding process, the contact surfaces of the two identical composite waterproof membrane preforms are staggered to form an overlap structure at the staggered position, and an isolation membrane layer II is arranged at the staggered position to obtain the mortise and tenon structure waterproof membrane.

9. The method for preparing a mortise and tenon structure waterproofing membrane according to claim 8, characterized in that: The coating temperature in S4 is 180-200°C.

10. The method for preparing a mortise and tenon structure waterproofing membrane according to claim 1, characterized in that: The thickness of the polymer carcass layer is 0.5 mm.

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