Composition for pre-laid reverse-sticking polymer waterproof roll, pre-laid reverse-sticking polymer waterproof roll and preparation method and application thereof
By using a combination of natural rubber and butyl rubber to prepare a pre-laid reverse-adhesive polymer waterproof membrane, the problem of insufficient deformation and self-recovery ability of existing membranes is solved, achieving improved high elasticity and self-healing ability, and meeting the requirements for long-term use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- FOSHAN KESHUN BUILDING MATERIAL CO LTD
- Filing Date
- 2026-03-23
- Publication Date
- 2026-07-07
AI Technical Summary
Existing pre-laid polymer waterproof membranes are insufficient in responding to deformation caused by factors such as earthquakes and in their ability to self-recover after deformation. Furthermore, their performance stability and self-healing ability are poor, making it difficult to meet the requirements for long-term use.
Using natural rubber as the base material, a specific vulcanization system and anti-aging agent are added, and butyl rubber is used as the self-adhesive layer of the waterproof membrane to form rubber compound A and rubber compound B. The pre-laid reverse adhesive polymer waterproof membrane is prepared by mixing, molding and vulcanization treatment, including coating a butyl rubber layer on the base material and covering it with reactive sand.
It improves the resilience and self-healing ability of the roll material, ensuring performance stability and recovery ability after deformation, and meeting the long-term use needs of buildings.
Smart Images
Figure CN122344355A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of building waterproofing, specifically to a composition for pre-laid reverse-adhesive polymer waterproof membrane, the pre-laid reverse-adhesive polymer waterproof membrane, its preparation method, and its application. Background Technology
[0002] Waterproof membranes mainly include SBS modified bitumen membranes, bitumen-based adhesive membranes, and polymer membranes. Bitumen-based membranes remain the most commonly used waterproofing materials, accounting for approximately 50% of the total. Among polymer membranes, pre-applied self-adhesive polymer membranes are highly favored for their ease of construction, leading to increased demand in the real estate sector and driving overall demand for polymer membranes.
[0003] The durability advantage of current polymer roll materials is not obvious, and the waterproofing project has a short service life.
[0004] Polymer waterproof membranes are green building materials, and the industry has experienced rapid development thanks to policy and market promotion. Currently, polymer waterproof membranes are mainly used in basements and roofs. It is expected that as product performance improves, their application scenarios will become increasingly diversified, with huge potential in single-layer roofing systems and basement green roofs. It is estimated that single-layer roofing systems alone will drive a market of over 10 billion yuan for polymer waterproofing.
[0005] Existing polymer waterproof membranes are mainly divided into pre-laid reverse-adhesive polymer waterproof membranes and self-adhesive polymer waterproof membranes. Among them, pre-laid polymer waterproof membranes account for more than 60%. Pre-laid reverse-adhesive polymer waterproof membranes refer to waterproof membranes on which structural concrete is directly poured. The self-adhesive layer of the membrane has a good adhesion to the concrete, achieving the effect of pre-laid reverse adhesion.
[0006] Pre-laid polymer waterproof membrane is a waterproof membrane with a polymer self-adhesive film layer laid loosely on the base surface in advance, so that the concrete slurry poured later is tightly bonded to the membrane film layer. It is called the pre-laid reverse bonding method. Its characteristics are: (1) In the waterproof construction of the base slab and exterior wall of underground engineering structures, the protective layer is eliminated, and the construction is convenient; (2) It solves the problem of poor bonding between the structure and the waterproof membrane, so that the bonding surface is not prone to water seepage. Therefore, the pre-laid polymer waterproof membrane becomes an integral part of the building body. Factors such as earthquakes can cause the building body to experience large-scale settlement, partial area cracking, and foundation disturbance. Therefore, the pre-laid polymer waterproof membrane has high requirements for its ability to cope with deformation and self-recover after deformation.
[0007] Currently, pre-laid polymer waterproof membranes are mainly P-type products, with HDPE sheets as the main material. They have poor resistance to deformation and recovery from deformation. In contrast, R-type pre-laid polymer waterproof membranes have excellent elastic recovery rates, which can effectively protect buildings from damage caused by earthquakes and other factors. They also play a very positive role in ensuring the earthquake resistance of construction projects. However, in actual use, these products still have problems such as insufficient performance stability, and their self-healing ability and resilience do not meet expectations, making it difficult to meet the requirements for long-term use in engineering projects. Summary of the Invention
[0008] The purpose of this invention is to provide a pre-applied self-adhesive polymer waterproof membrane with high elasticity, self-healing ability, and stable performance.
[0009] To achieve the above objectives, a first aspect of the present invention provides a composition for pre-laid reverse-adhesive polymer waterproof membrane, the composition comprising adhesive combination A and adhesive combination B; The rubber compound A contains a first main agent and a first auxiliary agent; the first main agent contains natural rubber, a vulcanization system and an anti-aging agent I; the Mooney viscosity ML(1+4) of the natural rubber at 100°C is 60-80; in the rubber compound A, based on 100 parts by weight of the total weight of the natural rubber, the content of the vulcanization system is 2-4 parts by weight and the content of the anti-aging agent I is 4-6 parts by weight. The rubber compound B contains a second main agent and a second auxiliary agent; the second main agent contains butyl rubber, SIS modifier, anti-aging agent II, tackifying resin, and polyisobutylene; the tackifying resin is selected from at least one of terpene resin and DCPD resin; based on 100 parts by weight of the total weight of the rubber compound B, the content of butyl rubber is 16-18 parts by weight, the content of SIS modifier is 14-16 parts by weight, the content of anti-aging agent II is 0.8-1.2 parts by weight, the content of tackifying resin is 36-40 parts by weight, and the content of polyisobutylene is 20-24 parts by weight.
[0010] A second aspect of the present invention provides a method for preparing a pre-laid reverse-adhesive polymer waterproof membrane, the method comprising using the components of the composition described in the first aspect of the present invention, including: (1) Material I containing each component of rubber compound A is subjected to a first mixing, molding, and vulcanization treatment in sequence to obtain a base material; and Material II, containing each component of rubber compound B, is mixed a second time to obtain butyl rubber compound; (2) The butyl rubber is coated on one side of the substrate to form a butyl rubber layer, and reactive sand is applied to the butyl rubber layer to obtain the pre-laid reverse adhesive polymer waterproof membrane.
[0011] A third aspect of the present invention provides a pre-laid reverse-adhesive polymer waterproof membrane prepared by the method described in the second aspect.
[0012] The fourth aspect of the present invention provides the application of the pre-laid reverse-adhesive polymer waterproof membrane described in the third aspect in the field of building waterproofing.
[0013] Through the above technical solution, the present invention has at least the following advantages: This solution uses natural rubber as the base material, adds a specific vulcanization system and anti-aging agent, and supplements it with butyl rubber as the self-adhesive layer of the waterproof membrane, which can effectively provide the membrane with resilience and self-healing ability. Attached Figure Description
[0014] Figure 1 This is a structural diagram of a pre-laid reverse-adhesive polymer waterproof membrane. Detailed Implementation
[0015] The endpoints and any values of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values should be understood to include values close to these ranges or values. For numerical ranges, the endpoint values of the various ranges, the endpoint values of the various ranges and individual point values, and individual point values can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.
[0016] As mentioned above, a first aspect of the present invention provides a composition for pre-laid reverse-adhesive polymer waterproof membrane, the composition comprising adhesive combination A and adhesive combination B; The rubber compound A contains a first main agent and a first auxiliary agent; the first main agent contains natural rubber, a vulcanization system and an anti-aging agent I; the Mooney viscosity ML(1+4) of the natural rubber at 100°C is 60-80; in the rubber compound A, based on 100 parts by weight of the total weight of the natural rubber, the content of the vulcanization system is 2-4 parts by weight and the content of the anti-aging agent I is 4-6 parts by weight. The rubber compound B contains a second main agent and a second auxiliary agent; the second main agent contains butyl rubber, SIS modifier, anti-aging agent II, tackifying resin, and polyisobutylene; the tackifying resin is selected from at least one of terpene resin and DCPD resin; based on 100 parts by weight of the total weight of the rubber compound B, the content of butyl rubber is 16-18 parts by weight, the content of SIS modifier is 14-16 parts by weight, the content of anti-aging agent II is 0.8-1.2 parts by weight, the content of tackifying resin is 36-40 parts by weight, and the content of polyisobutylene is 20-24 parts by weight.
[0017] In a preferred embodiment, the mechanical impurity content in the natural rubber of the present invention is ≤0.05wt%.
[0018] It should be noted that, in this invention, the DCPD resin refers to dicyclopentadiene resin.
[0019] Preferably, in the rubber compound A, the first additive contains a softening oil and a reinforcing agent.
[0020] Preferably, in the rubber compound A, the content of the softening oil is 5-8 parts by weight and the content of the reinforcing agent is 20-40 parts by weight, based on 100 parts by weight of the total weight of the natural rubber.
[0021] Preferably, in the rubber compound A, the vulcanization system is a combination of a vulcanizing agent and a vulcanization accelerator in a mass ratio of 1-2:1; the vulcanizing agent is selected from at least one of sulfur, organic peroxide, and sulfur donor; the vulcanization accelerator is selected from at least one of N-cyclohexyl-2-benzothiazole sulfenamide, N-oxodiethyl-2-benzothiazole sulfenamide, and N-tert-butyl-2-benzothiazole sulfenamide.
[0022] Preferably, in the rubber compound A, the anti-aging agent I is a combination of an antioxidant and an activator in a mass ratio of 1:0.5-0.8; the antioxidant is selected from at least one of antioxidant 4020 and antioxidant 4010NA; and the activator is selected from at least one of zinc stearate and 2,2,4-trimethyl-1,2-dihydroquinoline polymer.
[0023] Preferably, the natural rubber is selected from at least one of SCR CV, SMR CV, and SCR WF.
[0024] In a preferred embodiment, the softening oil is an aromatic oil selected from at least one of TDAE and MES.
[0025] In a preferred embodiment, the reinforcing agent is selected from at least one of carbon black, silicon dioxide, and precipitated silica.
[0026] Preferably, in the rubber compound B, the second additive contains titanium dioxide, heavy calcium carbonate and silane coupling agent; based on 100 parts by weight of the total weight of the rubber compound B, the content of titanium dioxide is 1-2 parts by weight, the content of heavy calcium carbonate is 4-6 parts by weight, and the content of silane coupling agent is 0.4-0.6 parts by weight.
[0027] Preferably, the weight-average molecular weight of the butyl rubber is 300,000-450,000 g / mol.
[0028] Preferably, in the rubber compound B, the content of styrene structural units in the SIS modifier is ≤25wt%.
[0029] More preferably, the SIS modifier is a combination of SIS YH1716 and SIS RR-210 in a mass ratio of 1:1-2; in this invention, the SIS modifier refers to a styrene-isoprene block copolymer, and SIS YH1716 and SIS RR-210 are different grades of SIS modifiers, wherein the styrene structural unit content in SIS YH1716 is 18-20 wt%, and the styrene structural unit content in SIS RR-210 is 21 wt%.
[0030] Preferably, in the rubber compound B, the anti-aging agent II is a combination of an antioxidant and a light stabilizer in a mass ratio of 2-3:1; the antioxidant is selected from at least one of antioxidant 1010 and antioxidant 168; and the light stabilizer is selected from at least one of light stabilizer 770 and light stabilizer 622.
[0031] Preferably, the number-average molecular weight of the polyisobutylene is 900-1000 g / mol.
[0032] In a preferred embodiment, the titanium dioxide has an average particle size of 0.2-0.3 μm; the titanium dioxide is selected from at least one of rutile titanium dioxide and anatase titanium dioxide.
[0033] In a preferred embodiment, the average particle size of the heavy calcium carbonate is 10-15 μm.
[0034] In a preferred embodiment, the silane coupling agent is selected from at least one of KH560 and KH520.
[0035] In this invention, KH560 and KH520 are silane coupling agents of different grades, wherein KH560 refers to γ-glycidoxypropyltrimethoxysilane and KH520 refers to γ-aminopropylmethyldiethoxysilane.
[0036] As previously described, a second aspect of the present invention provides a method for preparing a pre-laid reverse-adhesive polymer waterproof membrane, the method comprising using the components of the composition described in the first aspect of the present invention, including: (1) Material I containing each component of rubber compound A is subjected to a first mixing, molding, and vulcanization treatment in sequence to obtain a base material; and Material II, containing each component of rubber compound B, is mixed a second time to obtain butyl rubber compound; (2) The butyl rubber is coated on one side of the substrate to form a butyl rubber layer, and reactive sand is applied to the butyl rubber layer to obtain the pre-laid reverse adhesive polymer waterproof membrane.
[0037] Preferably, in step (1), the conditions for the first mixing include: a temperature of 145-155°C and a time of 4-6 min.
[0038] Preferably, in step (2), a release film and reactive sand are applied to the butyl rubber layer to obtain a pre-laid reverse adhesive polymer waterproof membrane containing a side film.
[0039] In a preferred embodiment, the first mixing is carried out in an internal mixer.
[0040] Preferably, in step (1), the molding process is carried out in a single-screw extruder; the conditions of the molding process include: barrel temperature of 130-140℃ and die temperature of 135-145℃.
[0041] Preferably, in step (1), the conditions for the vulcanization treatment include: a temperature of 150-180℃, a pressure of 10-20MPa, and a time of 2-3min.
[0042] More preferably, the vulcanization process is carried out in a drum vulcanizing machine. The inventors have found that, under this preferred condition, the substrate surface obtained by the present invention is smoother and the thickness is more precisely controllable.
[0043] Preferably, in step (1), the conditions for the second mixing include: a temperature of 100-130°C and a time of 1-3 hours.
[0044] More preferably, the second mixing is carried out in a polymer rubber kneader; the second mixing operation further includes: first adding the butyl rubber and the SIS modifier to the polymer rubber kneader, stirring at a temperature of 90-110℃ and a frequency of 22-25Hz for 1-1.5h; raising the temperature to 125-135℃, adding the titanium dioxide, the anti-aging agent II, the tackifying resin and the heavy calcium carbonate, stirring at a frequency of 28-30Hz for 1-1.5h until there are no particles, then adding the polyisobutylene and the silane coupling agent, continuing to stir under the same conditions for 1-1.5h until there are no particles, cooling to 95-105℃ and discharging to obtain the butyl rubber compound.
[0045] In a preferred embodiment, the second mixing is carried out under vacuum conditions, with a vacuum degree of -0.05 to -0.095 MPa.
[0046] As previously stated, a third aspect of the present invention provides a pre-laid reverse-adhesive polymer waterproof membrane prepared by the method described in the second aspect.
[0047] Preferably, the roll material comprises, from top to bottom: an upper reactive sand layer, a middle butyl rubber layer, and a lower sheet substrate; the thickness of the upper layer is 0.2-0.3 mm, the thickness of the middle layer is 0.25-0.3 mm, and the thickness of the lower layer is 1-1.2 mm.
[0048] This invention exemplarily provides the structure of a pre-laid reverse-adhesive polymer waterproof membrane prepared according to a preferred embodiment, such as... Figure 1 As shown. By Figure 1 It can be seen that the upper layer of the pre-laid reverse-adhesive polymer waterproof membrane is a release film and reactive sand, the middle layer is butyl rubber, and the lower layer is a sheet substrate.
[0049] This invention provides an exemplary process for the fabrication of a pre-laid reverse-adhesive polymer waterproof membrane, specifically including: mixing materials I containing each component of adhesive combination A to obtain a compounded adhesive; sequentially extruding and continuously drum-curing to obtain a substrate; cooling and trimming the substrate; extruding butyl rubber; controlling the coating thickness and die temperature; applying butyl rubber to one side of the substrate to form a butyl rubber layer; and covering the surface of the butyl rubber layer with an edge film and sand, while paying attention to alignment and correction, to obtain the pre-laid reverse-adhesive polymer waterproof membrane; after cooling, the obtained pre-laid reverse-adhesive polymer waterproof membrane can be subsequently rolled up (inspecting appearance and dimensions), packaged, weighed, labeled with a certificate of conformity, stacked, inspected for finished products (performing quality control inspection), and put into storage.
[0050] As previously stated, the fourth aspect of the present invention provides the application of the pre-laid reverse-adhesive polymer waterproof membrane described in the third aspect in the field of building waterproofing.
[0051] The present invention will be described in detail below through embodiments. Unless otherwise specified, the raw materials and equipment used in the following embodiments are commercially available products, and some key raw material information is shown in Table 1.
[0052] Table 1
[0053] White masterbatch: Grade White Masterbatch 122, purchased from Foshan Bikun Plastics Co., Ltd. Thermoplastic rubber (TPR): Grade TPR30, purchased from Dongguan Guofeng Plastics Co., Ltd.; Thermoplastic elastomer (TPO): Grade 3020, purchased from ExxonMobil; Polypropylene (PP): Grade T03, purchased from Sinopec Refining & Chemical Co., Ltd. Linear low-density polyethylene (LLDPE): Grade 7042, purchased from Sinopec Guangzhou Branch; Polyolefin elastomer (POE): Grade 8150, purchased from Dow Chemical.
[0054] Example 1 (1) Add natural rubber (100g), vulcanization system, anti-aging agent I, softening oil (specifically TDAE) and reinforcing agent (specifically carbon black) to a mixer for the first mixing to obtain a mixture; after the obtained mixture is formed into sheets in a single screw extruder, it is vulcanized in a drum vulcanizing machine to obtain a base material; The temperature of the first mixing was 145℃, and the time was 6 minutes. The barrel temperature of the single-screw extruder is 130℃, and the die temperature is 135℃. The vulcanization treatment temperature was 150℃, the pressure was 10MPa, and the time was 2min.
[0055] (2) Under vacuum conditions (vacuum degree is -0.05MPa), butyl rubber (17g) and SIS modifier are added to a polymer rubber kneader and stirred for 1h at 100℃ and 5th gear (frequency is 25Hz); then the temperature is raised to 130℃, titanium dioxide (specifically rutile titanium dioxide with an average particle size of 0.2μm), anti-aging agent II, tackifying resin and heavy calcium carbonate (average particle size of 10μm) are added and stirred for 1h at 6th gear (frequency is 30Hz) until there are no particles. Then polyisobutylene and silane coupling agent (specifically KH560) are added and stirred for another 1h under the same conditions until there are no particles. After cooling to 100℃, the material is discharged to obtain butyl rubber compound.
[0056] (3) The butyl rubber material obtained in step (2) is coated on one side of the substrate obtained in step (1) to form a butyl rubber layer, and a release film and reactive sand are applied to the butyl rubber layer to obtain a pre-laid reverse adhesive polymer waterproof membrane.
[0057] The remaining key process parameters of this embodiment are shown in Table 2.
[0058] Examples 2-8 Examples 2 through 8 all adopted a similar process to that of Example 1, with the differences listed in Table 2.
[0059] Comparative Examples 1-3 Comparative Examples 1-3 all adopted a similar process to Example 1, and the differences are listed in Table 2.
[0060] In Table 2 and the following description, 100 parts by weight (or portions) represent a mass of 100g.
[0061] Table 2
[0062] Comparative Example 4 A type R polymer waterproof membrane, the raw materials by weight are: 96 parts TPR and 4 parts white masterbatch, and it is prepared by the following steps: Mix 96g of TPR with 4g of white masterbatch evenly, add it to a single screw extruder, control the barrel temperature at 150℃-180℃ for melt extrusion, calender it through a three-roll calender at a temperature of 65℃, and then treat it with a tempering roller at a temperature of 45℃ to obtain R-type polymer waterproof membrane.
[0063] Comparative Example 5 A TPO polymer waterproof membrane, comprising, by weight, 50 parts TPO, 18 parts PP, 30 parts LLDPE, and 3 parts white masterbatch, is prepared through the following steps: Mix 50g of TPO, 18g of PP, 30g of LLDPE and 3g of white masterbatch evenly, add to a single screw extruder, control the barrel temperature at 170℃-190℃ for melt extrusion, calender through a three-roll calender at 65℃, and then tempered by a tempering roller at 45℃ to obtain TPO polymer waterproof membrane.
[0064] Comparative Example 6 A type of HDPE polymer waterproof membrane, comprising the following raw materials by weight: 12 parts POE, 50 parts PP, 35 parts LLDPE, and 3 parts white masterbatch, is prepared through the following steps: Mix 12g of POE, 50g of PP, 35g of LLDPE and 3g of white masterbatch evenly, add to a single screw extruder, control the barrel temperature at 190℃-210℃ for melt extrusion, calender by a three-roll calender at 65℃, and then temper by a tempering roller at 45℃ to obtain HDPE polymer waterproof membrane.
[0065] Test case The performance test data of the polymer waterproof membranes in the examples and comparative examples are shown in Tables 3 and 4.
[0066] The standards in Tables 3 and 4 are the requirements of GB / T 23457-2017 "Pre-laid Waterproof Membranes".
[0067] Thickness and dimensional change rate were measured in accordance with GB / T 23457-2017 "Pre-laid Waterproof Membrane".
[0068] Tensile force, tensile strength, elongation at break, elongation at maximum tensile force, and tensile phenomena were tested in accordance with GB / T328.9-2007 "Test Methods for Waterproofing Membranes - Part 9: Tensile Properties of Polymer Waterproofing Membranes".
[0069] The tear strength of the nail rod was tested in accordance with GB / T328.8-2007 "Test Methods for Waterproofing Membranes - Part 8: Tensile Properties of Bituminous Waterproofing Membranes".
[0070] The elastic recovery rate was tested in accordance with GB / T528-2009 "Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber".
[0071] The puncture resistance was tested in accordance with CJ / T234-2006 "High-density polyethylene geomembrane for landfill".
[0072] Impact resistance was tested in accordance with GB12952-2011 "Polyvinyl chloride (PVC) waterproof membrane".
[0073] Static load resistance was tested in accordance with GB / T328.25-2007 "Test Methods for Waterproofing Membranes - Part 25: Static Load Resistance of Bituminous and Polymer Waterproofing Membranes".
[0074] Heat resistance was tested in accordance with GB / T328.11-2007 "Test Methods for Waterproofing Membranes - Part 11: Heat Resistance of Bituminous Waterproofing Membranes".
[0075] Low-temperature bending performance was tested in accordance with GB / T328.15-2007 "Test Methods for Waterproofing Membranes - Part 15: Low-Temperature Bending Performance of Polymer Waterproofing Membranes".
[0076] Low-temperature flexibility was tested in accordance with GB / T328.14-2007 "Test Methods for Building Waterproofing Membranes Part 14: Low-Temperature Flexibility of Bituminous Waterproofing Membranes".
[0077] Oil permeability and peel strength from post-poured concrete were tested in accordance with GB / T23457-2017 "Pre-laid Waterproof Membranes".
[0078] The impermeability was tested in accordance with GB / T328.10-2007 "Test Methods for Waterproofing Membranes - Part 10: Impermeability of Bituminous and Polymer Waterproofing Membranes".
[0079] The peel strength between rolls was tested in accordance with GB / T328.20-2007 "Test Methods for Waterproofing Membranes - Part 20: Peel Performance of Joints in Bituminous Waterproofing Membranes".
[0080] The immersion conditions were: temperature 23±2℃, time 168±2h.
[0081] The operating conditions for thermal aging are: temperature 80±2℃ and time 168±2h.
[0082] Repair efficiency is characterized by the retention rate of tensile strength of butyl rubber. The specific determination method is as follows: Butyl rubber material prepared in the examples or comparative examples is uniformly coated onto a release liner, and then another release liner is applied to the surface. The sample is cut into strips and stretched to fracture using a universal testing machine. Before testing, the release liner on both the top and bottom surfaces must be removed, and the original tensile strength at this point is recorded. The fractured surfaces of the sample are then re-aligned and placed in a standard environment (temperature 23±2℃) for 1 hour to allow for self-healing. The healed sample is then placed back into the universal testing machine, and the tensile strength after healing is measured using the same method. The formula for calculating repair efficiency is: Repair efficiency = 100% × (Healed tensile strength / Original tensile strength).
[0083] Table 3
[0084] Table 3 (continued)
[0085] Table 4
[0086] Table 4 (continued)
[0087] The results above show that the pre-laid reverse-adhesive polymer waterproof membrane provided by the present invention has excellent elasticity, self-healing ability and performance stability.
[0088] The preferred embodiments of the present invention have been described in detail above; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention, including combinations of various technical features in any other suitable manner. These simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.
Claims
1. A composition for pre-laid reverse-adhesive polymer waterproof membrane, characterized in that, The composition contains rubber compound A and rubber compound B; The rubber compound A contains a first main agent and a first auxiliary agent; the first main agent contains natural rubber, a vulcanization system and an anti-aging agent I; the Mooney viscosity ML(1+4) of the natural rubber at 100°C is 60-80; in the rubber compound A, based on 100 parts by weight of the total weight of the natural rubber, the content of the vulcanization system is 2-4 parts by weight and the content of the anti-aging agent I is 4-6 parts by weight. The rubber compound B contains a second main agent and a second auxiliary agent; the second main agent contains butyl rubber, SIS modifier, anti-aging agent II, tackifying resin, and polyisobutylene; the tackifying resin is selected from at least one of terpene resin and DCPD resin; based on 100 parts by weight of the total weight of the rubber compound B, the content of butyl rubber is 16-18 parts by weight, the content of SIS modifier is 14-16 parts by weight, the content of anti-aging agent II is 0.8-1.2 parts by weight, the content of tackifying resin is 36-40 parts by weight, and the content of polyisobutylene is 20-24 parts by weight.
2. The composition according to claim 1, characterized in that, In the rubber compound A, the first additive contains softening oil and reinforcing agent; And / or, in the rubber compound A, based on 100 parts by weight of the total weight of the natural rubber, the content of the softening oil is 5-8 parts by weight, and the content of the reinforcing agent is 20-40 parts by weight.
3. The composition according to claim 1, characterized in that, In the rubber compound A, the vulcanization system is a combination of a vulcanizing agent and a vulcanization accelerator in a mass ratio of 1-2:1; the vulcanizing agent is selected from at least one of sulfur, organic peroxide, and sulfur donor; the vulcanization accelerator is selected from at least one of N-cyclohexyl-2-benzothiazole sulfenamide, N-oxodiethylene-2-benzothiazole sulfenamide, and N-tert-butyl-2-benzothiazole sulfenamide. And / or, in the rubber compound A, the anti-aging agent I is a combination of an antioxidant and an activator in a mass ratio of 1:0.5-0.8; the antioxidant is selected from at least one of antioxidant 4020 and antioxidant 4010NA; the activator is selected from at least one of zinc stearate and 2,2,4-trimethyl-1,2-dihydroquinoline polymer.
4. The composition according to any one of claims 1-3, characterized in that, In the rubber compound B, the second additive contains titanium dioxide, heavy calcium carbonate and silane coupling agent; based on 100 parts by weight of the total weight of the rubber compound B, the content of titanium dioxide is 1-2 parts by weight, the content of heavy calcium carbonate is 4-6 parts by weight, and the content of silane coupling agent is 0.4-0.6 parts by weight. And / or, in the rubber compound B, the content of styrene structural units in the SIS modifier is ≤25wt%; And / or, in the rubber compound B, the anti-aging agent II is a combination of an antioxidant and a light stabilizer in a mass ratio of 2-3:1; the antioxidant is selected from at least one of antioxidant 1010 and antioxidant 168; the light stabilizer is selected from at least one of light stabilizer 770 and light stabilizer 622.
5. A method for preparing a pre-laid reverse-adhesive polymer waterproof membrane, characterized in that, This method is performed using any of the components in the composition according to any one of claims 1-4, comprising: (1) Material I containing each component of rubber compound A is subjected to a first mixing, molding, and vulcanization treatment in sequence to obtain a base material; and Material II, containing each component of rubber compound B, is mixed a second time to obtain butyl rubber compound; (2) The butyl rubber is coated on one side of the substrate to form a butyl rubber layer, and reactive sand is applied to the butyl rubber layer to obtain the pre-laid reverse adhesive polymer waterproof membrane.
6. The method according to claim 5, characterized in that, In step (1), the conditions for the first mixing include: a temperature of 145-155°C and a time of 4-6 min; And / or, in step (1), the molding process is carried out in a single-screw extruder; the conditions of the molding process include: barrel temperature of 130-140°C and die temperature of 135-145°C; And / or, in step (1), the conditions for the vulcanization treatment include: a temperature of 150-180°C, a pressure of 10-20 MPa, and a time of 2-3 min.
7. The method according to claim 5 or 6, characterized in that, In step (1), the conditions for the second mixing include: a temperature of 100-130°C and a time of 1-3 hours.
8. The pre-laid reverse-adhesive polymer waterproof membrane prepared by the method according to any one of claims 5-7.
9. The pre-laid reverse-adhesive polymer waterproof membrane according to claim 8, characterized in that, The roll material comprises, from top to bottom: an upper reactive sand layer, a middle butyl rubber layer, and a lower sheet substrate; The thickness of the upper layer is 0.2-0.3 mm, the thickness of the middle layer is 0.25-0.3 mm, and the thickness of the lower layer is 1-1.2 mm.
10. The application of the pre-laid reverse-adhesive polymer waterproof membrane according to claim 8 or 9 in the field of building waterproofing.