Non-asphalt-based non-curing waterproof coating as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of building materials, and discloses a non-asphalt-based non-curing waterproof coating as well as a preparation method and application thereof. The waterproof coating comprises the following components: liquid resin, a thermoplastic elastomer modifier, a rubber modifier, a cross-linking agent, an accelerant, a filler, a chemical root inhibitor, a plasticizer, a dispersant, and at least one of optional pigment, a resin modifier, an antioxidant and a deodorant. The non-asphalt-based non-curing waterproof coating disclosed by the invention has high extensibility and thermal aging resistance.

Description

Technical Field

[0001] The present invention belongs to the technical field of building materials, and more specifically, relates to a non-asphalt-based non-curing waterproof coating and a preparation method and application thereof. Background Art

[0002] The root-penetration-resistant waterproof layer is one of the basic structural layers of building roofs and garage greening, and is usually composed of an ordinary waterproof layer and a root-penetration-resistant layer. The root-penetration-resistant waterproof layer is mainly composed of root-penetration-resistant waterproof membrane. Although the waterproof membrane has uniform thickness and stable root-penetration-resistant performance, a large number of joints make it possible for water to penetrate. During construction, human factors cause the membrane to not fully adhere to the base layer, resulting in water leakage, and at the same time causing the root-penetration-resistant membrane to fail. The combined use of building waterproof coatings and waterproof membranes can be applied to any complex-shaped base surface, and form a dense and seamless waterproof root-blocking system. It can be seen that the construction of a new root-penetration-resistant waterproof layer by coating and rolling is a key process for the success of the entire roof and garage greening.

[0003] Non-asphalt-based non-curing waterproof coatings are mainly composed of softening oil, petroleum resin, rubber and other materials. The waterproof products have good high and low temperature performance. However, due to the compatibility problem of chemical root inhibitors in the coating, the elongation performance, thermal aging performance and thermal stability of the non-asphalt-based non-curing waterproof coatings are reduced. At the same time, the viscosity of the coatings in the prior art is poor, and the connection is unstable when connecting the waterproof membrane, which easily causes the waterproof failure problem.

[0004] Therefore, the development of a non-asphalt-based, non-curing waterproof coating with high elongation and high stability (resistant to heat aging) is of great significance for constructing a new type of coated composite root-blocking and puncture waterproof system to achieve the waterproof requirements with the same lifespan as the green roof building. Summary of the invention

[0005] The purpose of the present invention is to address the deficiencies of the prior art and to provide a non-asphalt-based non-curing waterproof coating and a preparation method and application thereof. The non-asphalt-based non-curing waterproof coating of the present invention has high elongation and heat aging resistance.

[0006] In order to achieve the above-mentioned object, the first aspect of the present invention provides a non-asphalt-based non-curing waterproof coating, which comprises the following components: a liquid resin, a thermoplastic elastomer modifier, a rubber modifier, a cross-linking agent, an accelerator, a filler, a chemical root inhibitor, a plasticizer and a dispersant, and optionally at least one of a pigment, a resin modifier, an antioxidant and a deodorant.

[0007] According to the present invention, preferably, based on the total weight of the waterproof coating, the waterproof coating comprises: 25-50% liquid resin, 3-10% thermoplastic elastomer modifier, 3-10% rubber modifier, 0.01-0.5% cross-linking agent, 0.01-0.5% accelerator, 10-40% filler, 0.5-1% chemical root inhibitor, 0-5% pigment, 0.5-5% resin modifier, 10-25% plasticizer, 2-7% dispersant, 1-3% antioxidant and 0-1.5% deodorant.

[0008] According to the present invention, preferably, based on the total weight of the waterproof coating, the waterproof coating comprises: 25-50% liquid resin, 3-10% thermoplastic elastomer modifier, 3-10% rubber modifier, 0.01-0.4% cross-linking agent, 0.01-0.3% accelerator, 10-40% filler, 0.6-0.8% chemical root inhibitor, 0-5% pigment, 0.5-5% resin modifier, 10-25% plasticizer, 2-7% dispersant, 1-3% antioxidant and 0.5-1.5% deodorant.

[0009] According to the present invention, preferably, the liquid resin is at least one of C5 petroleum resin, hydrogenated C5 petroleum resin, C9 petroleum resin, hydrogenated C9 petroleum resin, white mineral oil, reduced line oil, terpene resin, rosin resin and coumarone resin.

[0010] According to the present invention, preferably, the thermoplastic elastomer modifier is at least one of SBS (styrene-butadiene-styrene block copolymer), SEBS (styrene-polyethylene / butyl-butadiene copolymer), SIS (styrene-isoprene-styrene block copolymer), polyurethane elastomer, polyurethane elastomer and polyolefin elastomer. More preferably, the thermoplastic elastomer modifier is SBS, and the SBS is a linear SBS with a mass ratio of styrene to butadiene of (3-4): (6-7).

[0011] The present invention uses a small molecule-induced double-bond cross-linking modifier strategy to achieve high elongation performance of non-asphalt-based non-curing waterproof coatings, while improving the high and low temperature performance of non-asphalt-based non-curing waterproof coatings. In addition, in terms of root penetration resistance, in order to fill the root penetration resistance application gap of non-asphalt-based non-curing waterproof coating products and meet the multi-faceted application requirements of the products, the present invention uses chemical root inhibitors in waterproof coating products for the first time, and achieves high compatibility of chemical root inhibitors in non-asphalt-based non-curing waterproof coatings, avoiding the impact of chemical root inhibitors on product performance after addition.

[0012] In the present invention, N,N-methylenebisacrylamide is selected as a crosslinking agent in the modification process, and N,N-methylenebisacrylamide is used to initiate the protonation of carbon-carbon double bonds (C=C), an electrophilic addition reaction occurs, and a crosslinking reaction is performed to form a three-dimensional spatial network structure of the rubber, further improving the ductility of the rubber and the extension performance of the non-asphalt-based non-curing waterproof coating. At the same time, due to the three-dimensional network structure of the rubber after cross-linking, the glass transition temperature of the waterproof coating is increased and the density of the spatial structure is improved, further improving the heat aging resistance and the extension performance after heat aging of the waterproof coating.

[0013] According to the present invention, preferably, the rubber modifier is at least one of natural rubber (NR), styrene butadiene rubber (SBR), ethylene propylene diene monomer rubber (EPDM), butadiene rubber (BR) and butyl rubber (IIR). More preferably, the rubber modifier is styrene butadiene rubber (SBR), and the rubber content in the styrene butadiene rubber (SBR) is 30%-90%.

[0014] According to the present invention, preferably, the cross-linking agent is N,N-methylenebisacrylamide.

[0015] According to the present invention, preferably, the accelerator is at least one of a thiazole accelerator, a thiuram accelerator, a dithiocarbamate accelerator, a guanidine accelerator, an aldehyde amine accelerator, a sulfonamide accelerator, a thiourea accelerator and a xanthate accelerator.

[0016] According to the present invention, preferably, the filler is at least one of heavy calcium carbonate, light calcium carbonate, talcum powder, fly ash, ore powder, kaolin and clay.

[0017] According to the present invention, preferably, the chemical root inhibitor is a phenoxypropionic acid ester compound and / or a 2-(4-chloro-2-methylphenoxy)propionic acid derivative.

[0018] According to the present invention, preferably, the pigment is at least one of iron oxide red, chromium oxide green and Prussian blue.

[0019] According to the present invention, preferably, the resin modifier is at least one of styrene-vinyl acetate copolymer (EVA), polyethylene (PE), polypropylene (APP) and random poly-α-olefin (APOP).

[0020] According to the present invention, preferably, the plasticizer is at least one of dibutyl phthalate, dioctyl phthalate, polyisobutylene, naphthenic oil and paraffin oil.

[0021] According to the present invention, preferably, the dispersant is at least one of polyethylene wax, polypropylene wax, polyamide wax, oxidized polyethylene wax, modified polypropylene wax and modified polyamide wax.

[0022] According to the present invention, preferably, the antioxidant is at least one of antioxidant 1076, antioxidant 1010, antioxidant 1024, antioxidant 1098, antioxidant 2246 and antioxidant 168.

[0023] The second aspect of the present invention provides a method for preparing the non-asphalt-based non-curing waterproof coating, the method comprising the following steps:

[0024] (1) Add liquid resin into a reaction kettle and heat and stir;

[0025] (2) adding a thermoplastic elastomer modifier, a rubber modifier and an optional resin modifier to perform swelling and grinding;

[0026] (3) adding a cross-linking agent, an accelerator, an optional antioxidant, and an optional deodorant to carry out a cross-linking reaction;

[0027] (4) adding a plasticizer and a dispersant and stirring;

[0028] (5) adding chemical root inhibitor and stirring;

[0029] (6) Add fillers and optional pigments, and stir to obtain the non-asphalt-based non-curing waterproof coating.

[0030] According to the present invention, preferably, in step (1), the mixture is heated at a speed of 400-700 r / min while stirring, the temperature is raised to 130° C.-160° C., and the mixture is stirred for at least 1 hour.

[0031] According to the present invention, preferably, in step (2), the mixture is heated while stirring at a speed of 500-800 r / min, the temperature is controlled to be 170°C-180°C for swelling, the temperature is controlled to be 170°C-190°C for grinding, and the stirring is performed for 1.5-3h. More preferably, in step (2), a rubber modifier is added, stirred for 30-50min, and then a thermoplastic elastomer modifier and an optional resin modifier are added for swelling and grinding; wherein the swelling time is 15-30min, and the grinding time is 60-90min.

[0032] According to the present invention, preferably, in step (3), the cross-linking reaction is carried out at a speed of 500-800 r / min while heating and stirring, and the temperature is controlled to be 170°C-180°C, and the stirring is carried out for at least 1 hour. More preferably, in step (3), the cross-linking reaction time is 60-90 minutes.

[0033] According to the present invention, preferably, in step (4), the mixture is heated while stirring at a speed of 500-700 r / min, and the temperature is controlled to be 160° C.-170° C. for stirring for 0.5 h-1 h.

[0034] According to the present invention, preferably, in step (5), the stirring is carried out at a speed of 400-600 r / min while heating, and the temperature is controlled to be 160°C-165°C for stirring for at least 0.5 h. More preferably, in step (5), the stirring temperature is 160-163°C.

[0035] According to the present invention, preferably, in step (6), the mixture is heated while stirring at a speed of 400-600 r / min, and the temperature is controlled to be 140° C.-165° C. for at least 1 hour.

[0036] The third aspect of the present invention provides the use of the non-asphalt-based non-curing waterproof coating in a rolled composite root-blocking and puncture-proof waterproof system.

[0037] The beneficial effects of the technical solution of the present invention are as follows:

[0038] The waterproof coating of the present invention can solve the problem of the lack of root barrier performance of the non-asphalt-based non-curing waterproof coating itself, and avoid the problem of vegetation penetrating the waterproof layer due to the failure of the root barrier effect of the roll material when the composite root barrier and puncture waterproof system is constructed. The waterproof coating of the present invention has good root puncture resistance performance, filling the gap in the application field of root puncture resistance of non-asphalt-based non-curing waterproof coating.

[0039] At the same time, due to the addition of the cross-linking agent, the cross-linking effect of the waterproof coating of the present invention is more obvious, and it has good elongation performance, heat aging resistance and bonding performance, which solves the problem of unstable connection when connecting waterproof membranes, which easily causes waterproof failure.

[0040] Other features and advantages of the present invention will be described in detail in the following detailed description. DETAILED DESCRIPTION

[0041] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0042] Example 1

[0043] This embodiment provides a non-asphalt-based non-curing waterproof coating, wherein, based on the total weight of the waterproof coating, the waterproof coating comprises:

[0044] Liquid resin (a mixture of hydrogenated C9 petroleum resin and white mineral oil, wherein the mass ratio of hydrogenated C9 petroleum resin to white mineral oil is 1:4) 33.4%,

[0045] Thermoplastic elastomer modifier (linear SBS with a mass ratio of styrene to butadiene of 3:7) 6%,

[0046] Rubber modifier (styrene-butadiene rubber SBR powder, rubber content 90%) 5%,

[0047] Cross-linking agent (N,N-methylenebisacrylamide) 0.05%,

[0048] Accelerator (N,N-dicyclohexyl-2-benzothiazole sulfenamide) 0.05%,

[0049] Filler heavy calcium 32.1%,

[0050] Chemical root inhibitor 2-4-chloro-2-methylphenoxy-propionic acid n-octyl ester 0.6%,

[0051] Pigment iron oxide red 3%,

[0052] Resin modifier (styrene-vinyl acetate copolymer EVA, vinyl acetate (VA) content is 40%) 0.8%,

[0053] Plasticizer (polyisobutylene, molecular weight greater than 1500) 13%,

[0054] Dispersant (polyethylene wax) 3%,

[0055] Antioxidant 1076 2%,

[0056] Deodorant 1%.

[0057] The preparation method of the non-asphalt-based non-curing waterproof coating of this embodiment comprises the following steps:

[0058] (1) Add liquid resin into the reactor and heat it at 600 r / min while stirring until the temperature reaches 155°C;

[0059] (2) adding a rubber modifier to the material obtained in step (1) at 155° C., stirring at 600 r / min for 45 min, then adding a resin modifier, stirring at 600 r / min for 30 min, and then adding a thermoplastic elastomer modifier, swelling at 175° C. for 20 min, controlling the temperature at 180° C., and grinding using a colloid mill for 60 min;

[0060] (3) adding a crosslinking agent, a accelerator, an antioxidant and a deodorant to the substance obtained in step (2), controlling the temperature to 175° C., stirring at 700 r / min for 60 min, and carrying out a crosslinking reaction;

[0061] (4) adding a plasticizer and a dispersant to the substance obtained in step (3), and stirring at 165° C. for 30 min;

[0062] (5) adding a chemical root inhibitor to the substance obtained in step (4), controlling the temperature at 160° C., and stirring at 500 r / min for 30 min;

[0063] (6) Add pigment to the substance obtained in step (5), control the temperature to 155° C., and stir at 600 r / min for 30 min. Then add filler, control the temperature to 145° C., and stir evenly at 400 r / min to obtain the non-asphalt-based non-curing waterproof coating.

[0064] Example 2

[0065] The difference between this embodiment and embodiment 1 is only that:

[0066] The liquid resin is a mixture of hydrogenated C9 petroleum resin and reduced-line oil, wherein the mass ratio of the hydrogenated C9 petroleum resin to the reduced-line oil is 1:3.5;

[0067] The accelerator is tetramethylthiuram disulfide;

[0068] The filler is a mixture of heavy calcium and talcum powder, and the mass ratio of heavy calcium to talcum powder is 1:1;

[0069] The chemical root inhibitor is 2-(4-chloro-2-methyl-phenoxy) propionic acid-polyethylene glycol ester;

[0070] The pigment is Prussian blue.

[0071] Example 3

[0072] The difference between this embodiment and embodiment 1 is only that:

[0073] The liquid resin is a mixture of hydrogenated C9 petroleum resin and reduced-line oil, wherein the mass ratio of the hydrogenated C9 petroleum resin to the reduced-line oil is 1:3;

[0074] The thermoplastic elastomer modifier is a linear SBS with a mass ratio of styrene to butadiene of 4:6;

[0075] The accelerator is tetramethylthiuram disulfide;

[0076] The filler is a mixture of fly ash and talcum powder, and the mass ratio of fly ash to talcum powder is 1:0.8;

[0077] The chemical root inhibitor is phenoxypropionate polyether;

[0078] The pigment is chromium oxide green;

[0079] The resin modifier is styrene-vinyl acetate copolymer EVA, and the content of vinyl acetate (VA) is 45%;

[0080] Antioxidant 1010.

[0081] Comparative Example 1

[0082] This comparative example provides a non-asphalt-based non-curing waterproof coating, wherein, based on the total weight of the waterproof coating, the waterproof coating comprises:

[0083] Plasticizer (mixture of polyisobutylene (number average molecular weight 1300) and naphthenic oil, the mass ratio of polyisobutylene (number average molecular weight 1300) and naphthenic oil is 1:4) 35%,

[0084] Thermoplastic elastomer modifier (linear SBS with a mass ratio of styrene to butadiene of 3:7) 6%,

[0085] Rubber modifier (styrene-butadiene rubber SBR powder, rubber content 90%) 5%,

[0086] Liquid resin (a mixture of C5 petroleum resin and C9 petroleum resin, wherein the mass ratio of C5 petroleum resin to C9 petroleum resin is 3:2) 25%,

[0087] Dispersant (polyethylene wax) 3%,

[0088] Deodorant 1%,

[0089] Antioxidant 1076 2%,

[0090] Pigment iron oxide red 3%,

[0091] Filler heavy calcium 20%.

[0092] The preparation method of the non-asphalt-based non-curing waterproof coating of this comparative example comprises the following steps:

[0093] (1) Add plasticizer to the reactor and heat it to 145°C;

[0094] (2) adding a rubber modifier to the material obtained in step (1) at 145° C., stirring at 600 r / min for 45 min, then adding a thermoplastic elastomer modifier, swelling at 175° C. for 20 min, controlling the temperature at 180° C., and grinding using a colloid mill for 60 min;

[0095] (3) adding an antioxidant and a deodorant to the substance obtained in step (2), controlling the temperature to 175° C., stirring at 700 rpm for 60 min, and performing a cross-linking reaction;

[0096] (4) adding liquid resin and dispersant to the substance obtained in step (3), and stirring at 165° C. for 30 min;

[0097] (5) Add pigment to the substance obtained in step (4), control the temperature to 155° C., stir at 600 r / min for 30 min, then add filler, control the temperature to 145° C., stir evenly at 400 r / min, to obtain the non-asphalt-based non-curing waterproof coating.

[0098] Test Case

[0099] The coatings of Examples 1-3 and Comparative Example 1 were tested for performance, wherein:

[0100] Elongation and elongation after heat aging shall comply with the standard JC / T2428-2017;

[0101] The heat aging elongation test time is extended from 7 days to 28 days;

[0102] Thermal segregation implementation standard JTG E20-2011 (T0661-2011);

[0103] The static load resistance of 2.0mm thick diaphragm complies with GB / T 328.25;

[0104] The anti-fungal corrosion performance is in accordance with GB / T 1742-2007;

[0105] The specific test results are shown in Table 1.

[0106] Table 1

[0107]

[0108]

[0109] It can be seen from Table 5 that the elongation, elongation performance after heat aging, and thermal segregation of the coating of the embodiment are higher than those of the comparative example, wherein the thermal aging elongation retention rate can reach more than 80%, and the thermal segregation is 5°C on average. It can be seen that the non-asphalt-based non-curing waterproof coating of the present invention has excellent high elongation performance and thermal stability, has very good ductility and long-term durability during construction, and has good root penetration resistance.

[0110] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A non-asphalt-based non-curing waterproof coating, characterized in that: The waterproof coating comprises the following components: liquid resin, thermoplastic elastomer modifier, rubber modifier, crosslinking agent, accelerator, filler, chemical root inhibitor, plasticizer and dispersant, and optionally at least one of pigment, resin modifier, antioxidant and deodorant.

2. The non-asphalt-based non-curing waterproof coating according to claim 1, wherein: Based on the total weight of the waterproof coating, the waterproof coating comprises: 25-50% of liquid resin, 3-10% of thermoplastic elastomer modifier, 3-10% of rubber modifier, 0.01-0.5% of crosslinking agent, 0.01-0.5% of accelerator, 10-40% of filler, 0.5-1% of chemical root inhibitor, 0-5% of pigment, 0.5-5% of resin modifier, 10-25% of plasticizer, 2-7% of dispersant, 1-3% of antioxidant and 0-1.5% of deodorant; Preferably, based on the total weight of the waterproof coating, the waterproof coating comprises: 25-50% liquid resin, 3-10% thermoplastic elastomer modifier, 3-10% rubber modifier, 0.01-0.4% cross-linking agent, 0.01-0.3% accelerator, 10-40% filler, 0.6-0.8% chemical root inhibitor, 0-5% pigment, 0.5-5% resin modifier, 10-25% plasticizer, 2-7% dispersant, 1-3% antioxidant and 0.5-1.5% deodorant.

3. The non-asphalt-based non-curing waterproof coating according to claim 1 or 2, wherein: The liquid resin is at least one of C5 petroleum resin, hydrogenated C5 petroleum resin, C9 petroleum resin, hydrogenated C9 petroleum resin, white mineral oil, reduced line oil, terpene resin, rosin resin and coumarone resin; The thermoplastic elastomer modifier is at least one of SBS, SEBS, SIS, polyurethane elastomer, polyurethane elastomer and polyolefin elastomer; The rubber modifier is at least one of natural rubber, styrene-butadiene rubber, EPDM rubber, butadiene rubber and butyl rubber; The cross-linking agent is N,N-methylenebisacrylamide; The accelerator is at least one of thiazole accelerators, thiuram accelerators, dithiocarbamate accelerators, guanidine accelerators, aldehyde amine accelerators, sulfenamide accelerators, thiourea accelerators and xanthate accelerators; The filler is at least one of heavy calcium, light calcium, talcum powder, fly ash, ore powder, kaolin and clay; The chemical root inhibitor is a phenoxypropionic acid ester compound and / or a 2-(4-chloro-2-methylphenoxy)propionic acid derivative; The pigment is at least one of iron oxide red, chromium oxide green and Prussian blue; The resin modifier is at least one of styrene-vinyl acetate copolymer, polyethylene, polypropylene and random poly-α-olefin; The plasticizer is at least one of dibutyl phthalate, dioctyl phthalate, polyisobutylene, naphthenic oil and paraffin oil; The dispersant is at least one of polyethylene wax, polypropylene wax, polyamide wax, oxidized polyethylene wax, modified polypropylene wax and modified polyamide wax; The antioxidant is at least one of antioxidant 1076 , antioxidant 1010 , antioxidant 1024 , antioxidant 1098 , antioxidant 2246 and antioxidant 168 .

4. The non-asphalt-based non-curing waterproof coating according to claim 3, wherein: The thermoplastic elastomer modifier is SBS, and the SBS is a linear SBS with a mass ratio of styrene to butadiene of (3-4):(6-7); The rubber modifier is styrene-butadiene rubber, and the rubber content in the styrene-butadiene rubber is 30%-90%.

5. The method for preparing the non-asphalt-based non-curing waterproof coating according to any one of claims 1 to 4, characterized in that: The preparation method comprises the following steps: (1) Add liquid resin into a reaction kettle and heat and stir; (2) adding a thermoplastic elastomer modifier, a rubber modifier and an optional resin modifier to perform swelling and grinding; (3) adding a cross-linking agent, an accelerator, an optional antioxidant, and an optional deodorant to carry out a cross-linking reaction; (4) adding a plasticizer and a dispersant and stirring; (5) adding chemical root inhibitor and stirring; (6) Add fillers and optional pigments, and stir to obtain the non-asphalt-based non-curing waterproof coating.

6. The method for preparing the non-asphalt-based non-curing waterproof coating according to claim 5, wherein: In step (1), the mixture is heated at a speed of 400-700 r / min while stirring, the temperature is raised to 130° C.-160° C., and the mixture is stirred for at least 1 hour; In step (2), the mixture is heated while stirring at a speed of 500-800 r / min, the temperature is controlled at 170° C.-180° C. for swelling, the temperature is controlled at 170° C.-190° C. for grinding, and stirring is performed for 1.5-3 h; In step (3), the cross-linking reaction is carried out while heating at a speed of 500-800 r / min, the temperature is controlled at 170° C.-180° C., and the stirring is performed for at least 1 hour; In step (4), the mixture is heated while stirring at a speed of 500-700 r / min, the temperature is controlled at 160° C.-170° C., and the stirring is performed for 0.5 h-1 h; In step (5), the mixture is heated while stirring at a speed of 400-600 r / min, the temperature is controlled to be 160° C.-165° C., and the stirring is performed for at least 0.5 h; In step (6), the mixture is heated while stirring at a speed of 400-600 r / min, and the temperature is controlled to be 140° C.-165° C. for at least 1 hour.

7. The method for preparing the non-asphalt-based non-curing waterproof coating according to claim 6, wherein: In step (2), a rubber modifier is added and stirred for 30-50 minutes, and then a thermoplastic elastomer modifier and an optional resin modifier are added to carry out swelling and grinding; wherein the swelling time is 15-30 minutes, and the grinding time is 60-90 minutes.

8. The method for preparing the non-asphalt-based non-curing waterproof coating according to claim 6, wherein: In step (3), the cross-linking reaction time is 60-90 minutes.

9. The method for preparing the non-asphalt-based non-curing waterproof coating according to claim 6, wherein: In step (5), the stirring temperature is 160-163°C.

10. Use of the non-asphalt-based non-curing waterproof coating according to any one of claims 1 to 4 in a rolled composite root-blocking and puncture-proof waterproof system.

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