Asphaltic coating and chain double-bite double-lap waterproofing membrane

Abstract

The present application relates to the technical field of building waterproofing, and proposes a bitumen coating and chain type double-bite double-lap waterproofing coiled material. The bitumen coating comprises the following components by weight: bitumen 40-50 parts, styrene-butadiene rubber 3-5 parts, SBS 5-10 parts, PPO 5-10 parts, terpene resin 1-3 parts, styrene-maleic anhydride copolymer 1-2 parts, plasticizer 5-10 parts, antioxidant 0.1-1 part, and filler 15-35 parts. The PPO model includes SE1GFN2-701 and / or PX9406-701. The above technical solution solves the problem of low high-temperature resistance of the double-lap waterproofing coiled material in the related art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building waterproofing, in particular to a bituminous coating and chain type double-bite double-lap waterproofing membrane. BACKGROUND

[0002] Traditional roll material waterproofing construction mostly adopts single lap or simple hot melting, self-bonding lap joint method, which is prone to lap joint cracking and delamination when deformation joints, structural joints or external forces are encountered, thus increasing the risk of leakage. The double-lap waterproofing membrane can effectively reduce the penetration caused by lap joint cracking and delamination through the two-layer lap joint structure. Even if there is a slight gap in the first lap joint, the second lap joint structure can continue to block the water, forming a double waterproofing guarantee. This is particularly crucial for building parts such as roofs and basements that have extremely high waterproofing requirements, and can significantly reduce the risk of leakage and protect the building structure from water erosion.

[0003] Waterproofing membranes are generally divided into bituminous waterproofing membranes and high polymer waterproofing membranes. Bituminous waterproofing membranes are widely used due to their smooth surface and convenient construction. However, the softening point of bitumen is relatively low, and it is prone to deformation at high temperatures, causing the lap joint to crack and water to penetrate, affecting the waterproofing effect. Therefore, it is of great significance to develop a double-lap waterproofing membrane with high temperature resistance. SUMMARY

[0004] The present application provides a bituminous coating and chain type double-bite double-lap waterproofing membrane, which solves the problem of low high temperature resistance of double-lap waterproofing membranes in related technologies.

[0005] The technical solution of the present application is as follows:

[0006] The present application provides a bituminous coating, which comprises the following components by weight: bitumen 40-50 parts, styrene-butadiene rubber 3-5 parts, SBS 5-10 parts, PPO 5-10 parts, terpene resin 1-3 parts, styrene-maleic anhydride copolymer 1-2 parts, plasticizer 5-10 parts, antioxidant 0.1-1 part, and filler 15-35 parts. The PPO includes SE1GFN2-701 and / or PX9406-701.

[0007] As a further technical solution, the PPO includes SE1GFN2-701 and PX9406-701, and the mass ratio of SE1GFN2-701 to PX9406-701 is 1:2-4.

[0008] In the present application, the PPO with model SE1GFN2-701 and PX9406-701 has higher thermal stability and rigid molecular structure, and can interact with asphalt molecules after being added into the asphalt waterproofing membrane, thereby improving the heat resistance. SE1GFN2-701 has regular molecular chain and higher crystallinity, and plays a role of physical crosslinking point in the asphalt system. The rigid structure of SE1GFN2-701 enables the asphalt system to maintain certain skeleton support at high temperature, limits the freedom degree of asphalt molecules at high temperature, and prevents the asphalt from flowing excessively due to softening caused by heating. PX9406-701 enhances the viscosity of asphalt by improving the interaction between molecules, and further inhibits the flow phenomenon.

[0009] As a further technical solution, the raw material of the filler comprises mica powder and styrene-acrylic copolymer.

[0010] In the present application, the mica powder is a mineral with sheet structure, and has higher hardness and good mechanical strength. When the mica powder is added into the asphalt waterproofing membrane as a filler, the sheet structure of the mica powder can form a support network in the asphalt matrix, and can bear part of the tensile stress and disperse stress concentration points when subjected to external tensile force, thereby effectively improving the tensile strength of the waterproofing membrane. The mica powder also has higher thermal stability, and can inhibit the thermal expansion of asphalt when the asphalt waterproofing membrane is heated, thereby reducing the dimensional deformation of the membrane caused by temperature change. The styrene-acrylic copolymer has good dispersibility and fluidity, and can uniformly disperse the mica powder in the asphalt system. The styrene-acrylic copolymer can also maintain certain flexibility and adhesion at high temperature, and can maintain the stability of the internal structure of asphalt after being mixed with the mica powder.

[0011] As a further technical solution, the mass ratio of the mica powder to the styrene-acrylic copolymer is 5:0.1-0.5, for example, it can be 5:0.1, 5:0.2, 5:0.3, 5:0.4 or 5:0.5.

[0012] In the present application, by limiting the mass ratio of the mica powder to the styrene-acrylic copolymer to 5:0.1-0.5, the tensile strength of the waterproofing membrane can be further improved. When the mass ratio of the mica powder to the styrene-acrylic copolymer is lower than 5:0.1, the styrene-acrylic copolymer cannot form a complete film on the surface of the mica powder, thereby reducing the adhesion to asphalt. When the mass ratio of the mica powder to the styrene-acrylic copolymer is higher than 5:0.5, the excess styrene-acrylic copolymer increases the flexible segment, thereby weakening the rigid support structure constructed by the mica powder, and leading to the decrease of the tensile strength of the waterproofing membrane.

[0013] As a further technical solution, the preparation method of the filler comprises the following steps: adding mica powder and styrene-acrylic copolymer into toluene for mixing, and obtaining the filler after drying.

[0014] As a further technical solution, the temperature of the mixing is 50-60 DEG C, and the mixing time is 2-3h.

[0015] As a further technical solution, the plasticizer comprises one or both of dibutyl phthalate and dioctyl phthalate; and / or,

[0016] The antioxidant comprises one or more of antioxidant BHT, antioxidant 1010, and antioxidant 1024.

[0017] In the present application, the dibutyl phthalate and dioctyl phthalate have long alkyl chains in the molecular structure, which can be inserted between the asphalt molecules, weaken the interaction force between the asphalt molecules, make the asphalt molecules more easily slide, improve the flexibility of the roll material, make it not easy to be brittle in low temperature environment, and better adapt to the deformation of the base layer; the dibutyl phthalate and dioctyl phthalate can also adjust the hardness and viscosity of the asphalt, and in high temperature environment, can prevent the asphalt from losing viscosity due to excessive hardening, and maintain the adhesion between the waterproof roll material and each layer.

[0018] The asphalt will be oxidized during long-term heating and contact with oxygen, resulting in performance degradation, and the addition of antioxidant can improve the chemical structure stability of the asphalt. The antioxidant 1010 molecule contains multiple hindered phenol structures, which can react with the free radicals generated in the thermal oxidation process of the asphalt, convert them into stable compounds, and thus terminate the chain oxidation reaction; the antioxidant 1024 can react with unstable groups in the asphalt to form more stable chemical bonds, reduce the problem of molecular chain rupture and crosslinking caused by oxidation.

[0019] As a further technical solution, the asphalt model comprises one or more of 30#, 70#, and 90#, preferably 90#.

[0020] The present application also proposes a preparation method of asphalt coating material, which is used for preparing the asphalt coating material, and comprises the following steps: adding the asphalt after heating, adding styrene-butadiene rubber, SBS, PPO, and styrene-maleic anhydride copolymer for mixing, and adding the remaining components after cooling.

[0021] In the present application, the asphalt is in liquid state after heating, which provides a good dispersion medium, then the styrene-butadiene rubber, SBS, PPO, styrene-maleic anhydride copolymer are added, which can be fully diffused, swollen and uniformly dispersed in the asphalt system through stirring, and are intertwined with the asphalt molecules, which are more uniformly distributed in the asphalt, avoiding the aggregation phenomenon; then other additives are added after cooling, avoiding the volatilization or decomposition of other components due to high temperature, which can ensure that each component can fully play its own role and ensure the stability of the waterproofing membrane performance.

[0022] As a further technical solution, the heating temperature is 185-195 DEG C, and the cooling temperature is 160-170 DEG C.

[0023] The present application also provides a chain type double-bite double-lap waterproofing membrane, comprising an A type waterproofing membrane and a B type waterproofing membrane, wherein the A type waterproofing membrane is provided with a lap joint on both sides, and the B type waterproofing membrane is provided with a lap edge on both sides; the A type waterproofing membrane and the B type waterproofing membrane each independently comprise, from top to bottom, an anti-sticking and adhesion-reducing layer, a first permeation reaction layer, a first high polymer matrix layer, a second permeation reaction layer, a second high polymer matrix layer, a third permeation reaction layer and a first isolation film; the raw materials of the first permeation reaction layer, the second permeation reaction layer and the third permeation reaction layer each independently comprise the asphalt coating material.

[0024] In the present application, the lap joint is arranged on both long sides of the A type waterproofing membrane, the lap edge is arranged on both long sides of the B type waterproofing membrane, and the chain-double-bite-double-lap structure is used, so that the combination between the long sides of adjacent waterproofing membranes forms an infinite chain type bite type lap joint structure, and a double or even multiple waterproof sealing structure is formed, which can significantly improve the waterproofing, tensile resistance and shear resistance of the lap joint area. In construction, it also has higher fault tolerance and operability, and can reduce the dependence on additional reinforcing accessories, and has excellent overall quality and durability.

[0025] As a further technical solution, the raw materials of the anti-sticking and adhesion-reducing layer comprise one or more of river sand, quartz sand and recycled concrete sand; and / or,

[0026] The raw materials of the first high polymer matrix layer and the second high polymer matrix layer each independently comprise one of PET film, BON film, BOPP film, EVA film and PVDF film; and / or,

[0027] The first isolation film comprises one of PP film and PE film.

[0028] In the present application, SBS is styrene-butadiene-styrene block copolymer; PPO is polyphenylene oxide; PET is polyethylene terephthalate; BON is two-way nylon; BOPP is two-way stretched polypropylene; EVA is ethylene-vinyl acetate copolymer; PVDF is polyvinylidene fluoride; PP is polypropylene; and PE is polyethylene.

[0029] River sand, quartz sand and recycled concrete sand are all granular materials, and when used as the raw material of the anti-sticking and adhesion-reducing layer, the irregular particle morphology can form a physical barrier on the surface of the material, which can prevent the surface of the waterproof roll from directly contacting other objects, thereby preventing the mutual adhesion between the waterproof rolls.

[0030] The PET film has high tensile strength, and the ester group and benzene ring in the molecular structure form a stable conjugated system, so that when used as a high molecular matrix layer, the overall strength of the waterproof roll can be effectively enhanced, and deformation or rupture is less likely to occur when subjected to large tensile force, pressure and other external forces.

[0031] The BON film has a unique molecular orientation structure, good flexibility and high puncture resistance, the hydrogen bonds formed by the amide groups in the molecular chain enhance the intermolecular interaction force, and the biaxial stretching process further optimizes the molecular arrangement.

[0032] The BOPP film is easy to process, and in the biaxial stretching process, the molecular chains are oriented along the stretching direction, so that the strength and toughness of the material are improved while maintaining good flexibility, facilitating the compounding with other materials.

[0033] The EVA film has good adhesion to various materials and can be tightly combined with the asphalt layer in the waterproof roll to form a stable composite structure, and in the production process, the EVA film matrix can be firmly bonded to other layers through hot melting or adhesive, thereby improving the overall performance and reliability of the product.

[0034] The PVDF film has a highly stable molecular structure, and the C-F bond in the molecule has high bond energy, excellent weather resistance and chemical corrosion resistance. Using the PVDF film as the matrix of the waterproof roll can effectively resist chemical corrosion and prolong the service life of the waterproof roll.

[0035] As a further technical solution, the thickness of the anti-sticking and adhesion-reducing layer is 0.05-0.07mm, for example, it can be 0.05mm, 0.06mm or 0.07mm.

[0036] As a further technical solution, the thickness of the first high molecular matrix layer and the second high molecular matrix layer is independently 0.1-0.3mm, for example, it can be 0.1mm, 0.2mm or 0.3mm.

[0037] As a further technical solution, the thickness of the first permeation reaction layer, the second permeation reaction layer, and the third permeation reaction layer is independently 1-2 mm, for example, 1 mm, 1.5 mm, or 2 mm.

[0038] As a further technical solution, the A-type waterproofing membrane overlap is arranged between the second permeation reaction layer and the second polymer carcass layer, and the upper surface of the overlap is provided with a second isolation film; the B-type waterproofing membrane overlap edge is an extension of the first permeation reaction layer, the first polymer carcass layer, the second permeation reaction layer, the second polymer carcass layer, and the third permeation reaction layer, and the upper surface of the first permeation reaction layer is provided with a third isolation film, and the lower surface of the third permeation reaction layer is provided with a fourth isolation film.

[0039] As a further technical solution, the length of the A-type waterproofing membrane overlap is 60-100 mm, and the length of the B-type waterproofing membrane overlap edge is 60-100 mm.

[0040] As a further technical solution, the second isolation film, the third isolation film, and the fourth isolation film each independently include one of a PP film and a PE film.

[0041] As a further technical solution, the thickness of the first isolation film, the second isolation film, the third isolation film, and the fourth isolation film is independently 0.03-0.05 mm.

[0042] In the present application, a preparation method of the chain type double-bite double-overlap waterproofing membrane is also proposed, which is used to prepare the chain type double-bite double-overlap waterproofing membrane, and the adhesive-reducing layer, the first permeation reaction layer, the first polymer carcass layer, the second permeation reaction layer, the second polymer carcass layer, the third permeation reaction layer, and the first isolation film are sequentially laid in order, and the chain type double-bite double-overlap waterproofing membrane is obtained after compaction.

[0043] The present application also proposes a construction process of the chain type double-bite double-overlap waterproofing membrane, which includes the following steps:

[0044] The A-type waterproofing membrane is laid on the base layer, the isolation film on the upper surface of the overlap is removed, the uppermost and lowermost isolation films of the overlap edge of the B-type waterproofing membrane are removed, and then the B-type waterproofing membrane is inserted into the overlap of the A-type waterproofing membrane, and the chain type double-bite double-overlap waterproofing membrane is formed after the A-type waterproofing membrane and the B-type waterproofing membrane are overlapped with each other.

[0045] The working principle and beneficial effects of the present application are as follows:

[0046] In the present application, in the raw material of the asphalt coating, the asphalt as the basic material provides the basic waterproof performance, the butadiene styrene rubber can improve the flexibility and low temperature performance of the asphalt, so that the asphalt coating is not easy to crack in cold environment; the SBS significantly enhances the fatigue resistance of the asphalt, and in the case of frequently bearing dynamic load, the asphalt coating is not easy to appear deformation phenomenon; the PPO type is SE1GFN2-701 and / or PX9406-701, which has good high temperature resistance, can effectively inhibit the softening and flowing of the asphalt, and can improve the stability of the waterproof roll material in high temperature when the asphalt coating is applied in the waterproof roll material. BRIEF DESCRIPTION OF DRAWINGS

[0047] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0048] Figure 1 Structure schematic diagram of the A type waterproof roll material prepared in Example 1;

[0049] In the figure: 1-adhesion reducing layer, 2-first permeation reaction layer, 3-first high molecular matrix layer, 4-second permeation reaction layer, 6-second high molecular matrix layer, 7-third permeation reaction layer, 8-first separation film, 5-second separation film;

[0050] Figure 2 Structure schematic diagram of the B type waterproof roll material prepared in Example 1;

[0051] In the figure: 1-adhesion reducing layer, 2-first permeation reaction layer, 3-first high molecular matrix layer, 4-second permeation reaction layer, 5-second high molecular matrix layer, 6-third permeation reaction layer, 7-first separation film, 8-third separation film, 9-fourth separation film;

[0052] Figure 3 Structure schematic diagram of the chain type double-bite double-lap waterproof roll material prepared in Example 1. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the present application.

[0054] In the following examples and comparative examples:

[0055] Butadiene styrene rubber, type: SBR-1712; SBS, type: D-1152; styrene-maleic anhydride copolymer, type: GA1700; terpene resin, type: TP7042.

[0056] Embodiment 1

[0057] A preparation method of a chain type double-bite double-lap waterproof roll, comprising the following steps:

[0058] A chain type double-bite double-lap waterproof roll, comprising an A type waterproof roll (as shown in Figure 1 ) and a B type waterproof roll (as shown in Figure 2 ), the A type and B type waterproof rolls are sequentially laid in the order of from top to bottom: an anti-sticking adhesion-reducing layer, a first permeation reaction layer, a first high polymer matrix layer, a second permeation reaction layer, a second high polymer matrix layer, a third permeation reaction layer, and a first isolation film, and the A type and B type waterproof rolls are obtained after compaction;

[0059] The A type waterproof roll is provided with a lap joint of 60 mm in length at the second permeation reaction layer and the second high polymer matrix layer, and the upper surface of the lap joint is provided with a second isolation film;

[0060] The B type waterproof roll extends the first permeation reaction layer, the first high polymer matrix layer, the second permeation reaction layer, the second high polymer matrix layer, and the third permeation reaction layer by 60 mm on both sides as lap edges, the upper surface of the first permeation reaction layer is provided with a second isolation film, and the lower surface of the third permeation reaction layer is provided with a third isolation film; the structure of the A type and B type waterproof rolls after lapping is as shown in Figure 3 ;

[0061] The anti-sticking adhesion-reducing layer is river sand with a thickness of 0.05 mm;

[0062] The first high polymer matrix layer and the second high polymer matrix layer are both BON films with a thickness of 0.1 mm;

[0063] The first isolation film, the second isolation film, and the third isolation film are all PE films with a thickness of 0.03 mm;

[0064] A preparation method of the first permeation reaction layer, the second permeation reaction layer, and the third permeation reaction layer, comprising the following steps: 40 parts of 30# asphalt are heated to 185°C, then 3 parts of styrene-butadiene rubber, 5 parts of SBS, 5 parts of PPO SE1 GFN2-701, and 1 part of styrene-maleic anhydride copolymer are added and uniformly mixed, the temperature is lowered to 160°C, then 1 part of terpene resin, 5 parts of dibutyl phthalate, 0.1 part of antioxidant BHT, and 15 parts of filler are added and uniformly mixed to obtain the permeation reaction layer;

[0065] The filler is mica powder;

[0066] The thickness of the first permeation reaction layer, the second permeation reaction layer, and the third permeation reaction layer is 1 mm.

[0067] Embodiment 2

[0068] A preparation method of a chain type double-bite double-lap waterproof roll, comprising the following steps:

[0069] A chain type double-bite double-lap waterproof roll, comprising an A type waterproof roll and a B type waterproof roll, the A type and the B type waterproof roll are sequentially laid in the order from top to bottom: an anti-sticking adhesion-reducing layer, a first permeation reaction layer, a first high polymer matrix layer, a second permeation reaction layer, a second high polymer matrix layer, a third permeation reaction layer, and a first isolation film, and the A type and the B type waterproof roll are obtained after compaction;

[0070] The A type waterproof roll is provided with a lap joint of 80 mm in length at the second permeation reaction layer and the second high polymer matrix layer, and the upper surface of the lap joint is provided with a second isolation film;

[0071] The B type waterproof roll extends the first permeation reaction layer, the first high polymer matrix layer, the second permeation reaction layer, the second high polymer matrix layer, and the third permeation reaction layer by 80 mm on both sides as lap edges, and the upper surface of the first permeation reaction layer is provided with a second isolation film, and the lower surface of the third permeation reaction layer is provided with a third isolation film;

[0072] The anti-sticking adhesion-reducing layer is quartz sand with a thickness of 0.06 mm;

[0073] The first high polymer matrix layer and the second high polymer matrix layer are both PET films with a thickness of 0.2 mm;

[0074] The first isolation film, the second isolation film, and the third isolation film are all PP films with a thickness of 0.04 mm;

[0075] A preparation method of the first permeation reaction layer, the second permeation reaction layer, and the third permeation reaction layer, comprising the following steps: heating 45 parts of 90# asphalt to 190℃, then adding 4 parts of butadiene-styrene rubber, 8 parts of SBS, 8 parts of PPO SE1 GFN2-701, 1 part of styrene-maleic anhydride copolymer, mixing uniformly, cooling to 165℃, then adding 2 parts of terpene resin, 7 parts of dioctyl phthalate, 0.5 parts of antioxidant 1010, 25 parts of filler, and mixing uniformly to obtain the permeation reaction layer;

[0076] The filler is mica powder;

[0077] The thickness of the first permeation reaction layer, the second permeation reaction layer, and the third permeation reaction layer is 1.5 mm.

[0078] Example 3

[0079] A preparation method of a chain type double-bite double-lap waterproof roll, comprising the following steps:

[0080] A chain type double-bite double-lap waterproof roll material, comprising an A type waterproof roll material and a B type waterproof roll material, the A type and the B type waterproof roll material are sequentially laid in the order from top to bottom: an anti-sticking adhesion-reducing layer, a first permeation reaction layer, a first high polymer matrix layer, a second permeation reaction layer, a second high polymer matrix layer, a third permeation reaction layer, and a first isolation film, and after compaction, the A type and the B type waterproof roll materials are obtained;

[0081] The A type waterproof roll material is provided with a lap joint of 100 mm in length at the second permeation reaction layer and the second high polymer matrix layer, and the upper surface of the lap joint is provided with a second isolation film;

[0082] The B type waterproof roll material extends the first permeation reaction layer, the first high polymer matrix layer, the second permeation reaction layer, the second high polymer matrix layer, and the third permeation reaction layer by 100 mm on both sides as lap edges, and the upper surface of the first permeation reaction layer is provided with a second isolation film, and the lower surface of the third permeation reaction layer is provided with a third isolation film;

[0083] The anti-sticking adhesion-reducing layer is recycled concrete sand with a thickness of 0.07 mm;

[0084] The first high polymer matrix layer and the second high polymer matrix layer are both PVDF films with a thickness of 0.3 mm;

[0085] The first isolation film, the second isolation film, and the third isolation film are all PP films with a thickness of 0.05 mm;

[0086] The preparation method of the first permeation reaction layer, the second permeation reaction layer, and the third permeation reaction layer comprises the following steps: 50 parts of 70# asphalt are heated to 195℃, then 5 parts of styrene-butadiene rubber, 10 parts of SBS, 10 parts of PPO PX9406-701, 2 parts of styrene-maleic anhydride copolymer are uniformly mixed, the temperature is reduced to 170℃, then 3 parts of terpene resin, 10 parts of dioctyl phthalate, 1 part of antioxidant 168, and 35 parts of filler are uniformly mixed to obtain the permeation reaction layer;

[0087] The filler is mica powder;

[0088] The thickness of the first permeation reaction layer, the second permeation reaction layer, and the third permeation reaction layer is 2 mm.

[0089] Example 4

[0090] Compared with Example 2, the difference is that PPO SE1GFN2-701 is replaced by an equal amount of PPO SE1GFN2-701 and PPO PX9406-701 with a mass ratio of 2:1.

[0091] Example 5

[0092] The difference between this example and Example 4 is only that the mass ratio of PPO SE1 GFN2-701 and PPO PX9406-701 is 1:7.

[0093] Example 6

[0094] The difference between this example and Example 4 is only that the mass ratio of PPO SE1 GFN2-701 and PPO PX9406-701 is 1:2.

[0095] Example 7

[0096] The difference between this example and Example 4 is only that the mass ratio of PPO SE1 GFN2-701 and PPO PX9406-701 is 1:4.

[0097] Example 8

[0098] The difference between this example and Example 7 is only that the preparation method of the filler comprises the following steps:

[0099] 50 g of mica powder and 0.5 g of styrene-acrylic acid copolymer are added to 600 mL of toluene, heated to 60°C, and after 2 h of incubation with stirring, the filler is obtained by drying.

[0100] Example 9

[0101] The difference between this example and Example 8 is only that the addition amount of styrene-acrylic acid copolymer is 10 g.

[0102] Example 10

[0103] The difference between this example and Example 8 is only that the addition amount of styrene-acrylic acid copolymer is 1 g.

[0104] Example 11

[0105] The difference between this example and Example 8 is only that the addition amount of styrene-acrylic acid copolymer is 5 g.

[0106] Comparative Example 1

[0107] The difference between this comparative example and Example 1 is only that PPO SE1 GFN2-701 is replaced with an equal amount of PPO IMR2000BK.

[0108] Comparative Example 2

[0109] The difference between this comparative example and Example 1 is only that PPO SE1 GFN2-701 is not added.

[0110] Experimental Example 1

[0111] The A type waterproofing membrane prepared in examples 1-7 and comparative examples 1-2 was tested for heat resistance according to the method described in GB / T 35467-2017 "wet laid waterproofing membrane", the heating time was 2h, and the test results are shown in Table 1.

[0112] Table 1 Test results of waterproofing membrane high temperature resistance

[0113]

[0114] As shown in Table 1, the heat resistance of the waterproofing membrane prepared in examples 1-7 is higher than that of comparative examples 1-2, which shows that adding PPO with model SE1GFN2-701 and / or PX9406-701 in the penetration reaction layer can improve the high temperature resistance of the waterproofing membrane.

[0115] Experimental example 2

[0116] The A type waterproofing membrane prepared in examples 7-11 was tested for maximum tensile force in the longitudinal direction and maximum tensile force in the transverse direction according to the method described in GB / T 35467-2017 "wet laid waterproofing membrane", and the test results are shown in Table 2.

[0117] Table 2 Test results of waterproofing membrane tensile strength

[0118]

[0119] As shown in Table 2, the maximum tensile force in the longitudinal direction and the maximum tensile force in the transverse direction of the waterproofing membrane prepared in examples 8-11 are higher than that of example 7, which shows that adding styrene-acrylic copolymer in the filler can improve the tensile strength of the waterproofing membrane.

[0120] Experimental example 3

[0121] The isolation film on the upper surface of the A type waterproofing membrane prepared in examples 1-3 was removed, the isolation film on the lapping edge of the B type waterproofing membrane was removed, then the lapping edge of the B type waterproofing membrane was lapped in the lapping port of the A type waterproofing membrane, to obtain the lapped waterproofing membrane, and the waterproofing membrane at the lapping port was tested for impermeability according to the method described in GB / T 35467-2017 "wet laid waterproofing membrane", and the test results are shown in Table 3.

[0122] Table 3 Test results of waterproofing membrane impermeability

[0123]

[0124] As shown in Table 3, the double-bite double-lap waterproofing membrane prepared in the application has good impermeability, which meets the standard requirements.

[0125] The above merely preferred embodiments of the present application are not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An asphaltic coating material, characterized in that, The raw material comprises the following components by weight: asphalt 40-50 parts, styrene-butadiene rubber 3-5 parts, SBS 5-10 parts, PPO 5-10 parts, terpene resin 1-3 parts, styrene-maleic anhydride copolymer 1-2 parts, plasticizer 5-10 parts, antioxidant 0.1-1 part, filler 15-35 parts; the PPO includes SE1GFN2-701 and / or PX9406-701; The raw material of the filler comprises mica powder and styrene-acrylic acid copolymer; The mass ratio of the mica powder and the styrene-acrylic acid copolymer is 5:0.1-0.5; The plasticizer comprises one or both of dibutyl phthalate and dioctyl phthalate; and / or, The antioxidant comprises one or more of antioxidant BHT, antioxidant 1010, and antioxidant 1024.

2. An asphaltic coating material according to claim 1, characterised in that, The PPO includes SE1GFN2-701 and PX9406-701; the mass ratio of the SE1GFN2-701 and the PX9406-701 is 1:2-4.

3. An asphaltic coating material according to claim 1, characterised in that The preparation method of the filler comprises the following steps: adding mica powder and styrene-acrylic acid copolymer into toluene for mixing, and obtaining the filler after drying.

4. An asphaltic coating material according to claim 3, characterised in that, The temperature of the mixing is 50-60 DEG C, and the mixing time is 2-3 h.

5. A chain dual-seaming dual-lap waterproofing membrane, characterized in that, The waterproofing membrane comprises A-type waterproofing membrane and B-type waterproofing membrane, the A-type waterproofing membrane is provided with overlapping joints on both sides, and the B-type waterproofing membrane is provided with overlapping edges on both sides; the A-type waterproofing membrane and the B-type waterproofing membrane each independently comprise, from top to bottom, an anti-sticking tackiness-reducing layer, a first permeation reaction layer, a first high polymer matrix layer, a second permeation reaction layer, a second high polymer matrix layer, a third permeation reaction layer, and a first isolation film; the raw material of the first permeation reaction layer, the second permeation reaction layer, and the third permeation reaction layer each independently comprises the asphalt coating material according to any one of claims 1-4.

6. The chain type dual-seaming dual-lap waterproof roll material according to claim 5, characterized in that, The raw material of the anti-sticking tackiness-reducing layer comprises one or more of river sand, quartz sand, and recycled concrete sand; and / or, The raw material of the first high polymer matrix layer and the second high polymer matrix layer each independently comprises one of PET film, BON film, BOPP film, EVA film, and PVDF film; and / or, The first isolation film comprises one of PP film and PE film.

7. The chain type dual-seaming dual-lap waterproof roll material according to claim 5, characterized in that, The thickness of the anti-sticking tackiness-reducing layer is 0.05-0.07 mm; The thickness of the first high polymer matrix layer and the second high polymer matrix layer each independently is 0.1-0.3 mm; The thickness of the first permeation reaction layer, the second permeation reaction layer, and the third permeation reaction layer each independently is 1-2 mm.

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