Durable waterproof repair and maintenance system

Abstract

The invention provides a durable waterproof repair and maintenance system, and designs a roll-coating composite durable waterproof repair and maintenance system which has the main structure as follows: a thin coating type normal-temperature non-curing asphalt-based material is arranged on the innermost side, a durable powerful crossed pressed film structure is arranged on the outer side, a high-weather-resistant pressure-sensitive adhesive coating is arranged on the outer side of the crossed pressed film structure, and a waterproof layer is arranged on the outer side of the crossed pressed film structure. And a PET (Polyethylene Terephthalate) structural film with a fluorocarbon coating is arranged on the outermost side. According to the waterproof structure design, the waterproof repairing function of an existing building in the current market is achieved through composite use of four waterproof structures, meanwhile, the waterproof requirements of different areas of the current waterproof repairing structure can be completely met through composite use of multiple waterproof structures, and the waterproof system has good application prospects.

Description

Technical Field

[0001] The invention provides a durable waterproof repair and maintenance system, belonging to the field of manufacturing and application of building waterproof materials. Technical Background

[0002] The production, manufacturing and application technology of waterproof materials is a practical discipline closely related to the service life and use effect of construction projects. Because the environment of waterproof engineering structure design is complex, and there are various ways of leakage of rainwater, groundwater and environmental water, the design and maintenance of waterproof engineering have put forward higher and higher requirements. In recent years, with the promotion and update of construction engineering technology and the implementation of the corresponding production, design, processing, manufacturing and application specifications of waterproof materials, for new construction projects, the design selection and construction application technology of waterproof materials can meet the current requirements of building design life, the performance of waterproof materials is better, and the design and construction of waterproof engineering is more reasonable. The durability, weather resistance, corrosion resistance and resistance to environmental water invasion of waterproof engineering can be guaranteed. However, for existing buildings that have been built for a certain number of years, due to the insufficient design performance of waterproof materials in the early stage and the imperfect construction process, water leakage occurs frequently, and waterproof engineering rework and waterproof repair are required. At present, the waterproofing problem and repair demand of existing buildings have become one of the main problems affecting the function of existing buildings.

[0003] The waterproof repair of existing buildings is currently a blank area in the design and construction of waterproof projects due to the complex working conditions and the lack of preliminary design specifications. At present, there are mainly the following forms: 1. Renovation of waterproof projects. The advantage is that the design and construction of waterproof projects can be re-constructed. After the renovation is completed, the leakage of waterproof projects can be significantly improved. The disadvantage is that the cost is generally high, the cost is high, and some old buildings with a long history cannot be renovated. At the same time, the renovation project cannot handle the leakage of underground waterproof projects. 2: New construction of waterproof projects. The advantage is the integrated waterproof construction design, which can achieve a better waterproof effect. The disadvantage is that the composite problem of the new waterproof project and the original waterproof project cannot be effectively solved. The original waterproof project has generally lost its waterproof effect due to its age, and has been damaged and broken. The leakage part has been immersed in a water-rich environment for a long time. Setting another waterproof layer on the outside and the composite form and construction difficulty of the material are relatively high. 3: Repair the waterproof structure. The self-adhesive waterproof membrane or waterproof coating is mainly used for repair. The advantage of this solution is that it is simple and easy to operate, and the waterproof structure is treated and improved at the repair site. The disadvantage is that the repair effect is poor. Generally, it is necessary to carry out repair operations on the back water side of the waterproof project. The waterproof material on the back water side is more prone to leakage during repair. After the original waterproof layer fails, the water on the back water side has leaked. Compared with the waterproof effect of the front water side, the water blocking effect of the back water side is greatly reduced. Summary of the invention

[0004] The present invention aims to solve various problems existing in the repair process of existing building waterproofing projects, and designs a roll-coated composite durable waterproofing repair and maintenance system, whose main structure is as follows: 1: The innermost side is provided with a thin-coated room temperature non-curing asphalt-based material with a thickness of 0.3-0.8mm. A technical solution of asphalt modification using petroleum asphalt + rock asphalt as the main body and thickening resin + softening oil + cycloalkane oil + rubber material as asphalt modified materials is adopted. Through a specific process design, a thin-coat non-curing rubber asphalt waterproof coating that can be constructed at room temperature is prepared. The material can be constructed at room temperature and has high creep and adhesion. During construction, the material is scraped on the water-facing or water-receiving surface of the waterproof structure to be repaired. Because the material has good permeability and creep, it serves as the first line of protection for the waterproof repair and maintenance structure. 2: A durable strong cross-pressure membrane structure is provided on the outside of the non-curing coating. As the middle structure of the waterproof repair structure, it has good bonding effect with the normal temperature non-curing coating on the inside. The designed thickness is 0.10-0.15mm, and it is poorly pressed with 2 layers of PE film. The outermost side is coated with a weather-resistant spray coating. It has good sealing and protection effect while having good durability and joint deformation ability. 3: A high weather-resistant pressure-sensitive adhesive layer is set on the outside of the strong cross-pressed film, with a designed thickness of 0.2-0.3mm, which completely covers the above two-layer structure, further improving the sealing performance of the material and the bonding effect with the substrate. Its high weather-resistant pressure-sensitive adhesive layer structure is mainly composed of isoprene, isobutylene, cyclopentane oil and tackifying resin, anti-aging agent, light oxidation stabilizer and other structures, and is refined with various auxiliary materials. The pressure-sensitive structure has good adhesion with the inner cross-film structure, and the design construction range is larger than the inner cross-film and the normal temperature non-curing structure, further improving the sealing performance of the main body of the repair structure and improving the bonding effect between the material and the substrate. 4: A 0.09-0.12mm PET material structural film is set on the outermost side of the structure, and a fluorocarbon reflective coating is set on the outside, which can further improve the weather resistance and structural stability of the material and prevent the material from aging and damage due to exposure to the environment.

[0005] In order to achieve the above-mentioned technical effect, the present invention discloses a durable waterproof repair and maintenance system, whose main structure is as follows: the innermost side is provided with a thin-coated, room-temperature non-curing asphalt-based coating, the outer side is a durable, strong cross-laminated film structure, the outer side of the cross-laminated film structure is a weather-resistant pressure-sensitive adhesive coating, and the outermost side is provided with a PET structural film with a fluorocarbon coating.

[0006] Preferably, the innermost room temperature non-curing asphalt coating of the waterproof repair and maintenance system has a thickness of 0.3-0.8 mm and is prepared from 100 parts of mixed asphalt, 20-30 parts of main modifier, 15-25 parts of rubber modified material, 2-3 parts of high temperature additive, 2-3 parts of rheological additive, 05-1.5 parts of defoaming agent, 30-50 parts of filler and 10-12 parts of styrene-butadiene latex.

[0007] Preferably, the mixed asphalt in the room temperature non-curing coating of the waterproof repair and maintenance system is compounded by national standard 70 asphalt and rock asphalt, 70# asphalt: rock asphalt = 1-2.5:1, wherein the softening point of 70# asphalt is 45-66, the needle penetration is 66-80, the elongation is ≥1000mm, and the colloid content is ≥15%. The ash content of rock asphalt is 20-40%, the needle penetration is 15-35, and the softening point is 95-110.

[0008] Preferably, the room temperature non-curing waterproof coating of the waterproof repair and maintenance system uses tackifying resin + softening oil + cyclohexane oil + rubber material as the main modifier, and the compounding ratio is tackifying resin + softening oil + cyclohexane oil + rubber material = 1: 0.8-1.2: 0.6-0.8: 2-3, wherein the tackifying resin is a composite of rosin resin and terpene resin, and the compounding ratio is 2: 1, the softening oil uses rubber filler oil with an aromatic content of more than 50%, and the cyclohexane oil uses a high molecular weight cyclohexane oil with a cyclohexane content of more than 80%, and its molecular weight is 6000-18000, and the rubber modified material is a composite of styrene-butadiene rubber, chloroprene rubber, and butadiene rubber, and the compounding ratio is styrene-butadiene rubber: chloroprene rubber: butadiene rubber = 1: 0.3-0.5: 0.2-0.4.

[0009] Preferably, the durable strong cross-laminated membrane structure of the waterproof repair and maintenance system is designed to have a thickness of 0.10-0.15 mm, an elongation of ≥200%, and is formed by cross-laminated composite of two 0.05-0.08 mm high-strength PE films.

[0010] Preferably, the waterproof repair and maintenance system has a durable strong cross-laminated membrane structure with a high-strength acrylic isolation coating on the outside, with a designed thickness of 0.05-0.10 mm.

[0011] Preferably, the waterproof repair and maintenance system has a highly weather-resistant pressure-sensitive adhesive layer on the outer side of the cross membrane, with a designed thickness of 0.2-0.3 mm.

[0012] Preferably, the waterproof repair and maintenance system has a highly weather-resistant pressure-sensitive adhesive layer that completely covers the non-curing coating structure and the cross-membrane structure, and is prepared from 20-30 parts of isoprene, 15-25 parts of isobutylene, 10-20 parts of SIS, 25-40 parts of cyclohexane oil, 15-30 parts of tackifying resin, 1-2 parts of anti-aging agent, and 0.5-1.5 parts of light-oxidation stabilizer material.

[0013] Preferably, the waterproof repair and maintenance system has a highly weather-resistant pressure-sensitive adhesive layer structure with a 0.09-0.12 mm PET structural film on the outermost side, and a 0.02-0.04 mm thick fluorocarbon weather-resistant coating on the outer side of the structural film. DETAILED DESCRIPTION

[0014] Embodiment 1:

[0015] A roll-coated composite durable waterproof repair and maintenance system, whose main structure is as follows: the innermost side is provided with a thin-coated, room-temperature non-curing asphalt-based coating, the outer side is a durable, strong cross-laminated film structure, the outer side of the cross-laminated film structure is a weather-resistant pressure-sensitive adhesive coating, and the outermost side is provided with a PET structural film with a fluorocarbon coating.

[0016] The innermost room temperature non-curing asphalt coating has a thickness of 0.4-0.5 mm and is prepared from 100 parts of mixed asphalt, 25 parts of main modifier, 20 parts of rubber modified material, 2 parts of high temperature additive, 3 parts of rheological additive, 0.5 parts of defoamer, 40 parts of filler and 10 parts of styrene-butadiene latex.

[0017] The mixed asphalt is made of national standard 70 asphalt and rock asphalt, 70# asphalt: rock asphalt = 2:1, of which 70# asphalt has a softening point of 52-53, a needle penetration of 72-74, an elongation of ≥1000mm, and a colloid content of 18%. The ash content of rock asphalt is 25%, the needle penetration is 16, and the softening point is 105.

[0018] The room temperature non-curing waterproof coating uses tackifying resin + softening oil + cycloalkane oil + rubber material as the main modifiers, and the compounding ratio is tackifying resin + softening oil + cycloalkane oil + rubber material = 1:1:0.6:2. The tackifying resin is compounded with rosin resin and terpene resin in a ratio of 2:1. The softening oil uses rubber filler oil with an aromatic content of more than 50%. The cycloalkane oil uses high molecular weight cycloalkane oil with a cycloalkane content of more than 80%, and its molecular weight is 8000-10000. The rubber modified material is compounded with styrene-butadiene rubber, chloroprene rubber, and butadiene rubber, and the compounding ratio is styrene-butadiene rubber: chloroprene rubber: butadiene rubber = 1:0.4:0.3.

[0019] The preparation method of room temperature non-curing waterproof coating is as follows:

[0020] 1: Add the above mixed asphalt rubber modified material into the reactor, stir and heat to 125-135℃;

[0021] 2: After the temperature reaches the expected value, add the above main modifier and rubber modified material, keep the temperature at 125-135°C, stir at 600-700RPM / min, and stir for 1 hour;

[0022] 3: Add light stabilizer and antioxidant and continue stirring for 30 minutes;

[0023] 4: Add rheological additive, keep warm at 125-135℃ and continue stirring for 30-40 minutes;

[0024] 5: Lower the temperature to below 60°C, add filler, defoamer, styrene-butadiene latex and continue stirring for 30 minutes, then discharge the material.

[0025] The durable strong cross-laminated film structure is designed to have a thickness of 0.10mm and an elongation of ≥200%. It is made of two layers of 0.05mm high-strength PE films that are cross-laminated and composited.

[0026] The outer side of the durable strong cross-laminated membrane structure is coated with a high-strength acrylic isolation coating with a designed thickness of 0.05-0.06mm.

[0027] A highly weather-resistant pressure-sensitive adhesive layer is provided on the outside of the cross membrane, with a designed thickness of 0.25-0.3mm.

[0028] The high weather-resistant pressure-sensitive adhesive layer completely covers the non-curing coating structure and the cross-film structure, and is prepared from 25 parts of isoprene, 20 parts of isobutylene, 15 parts of SIS, 30 parts of cyclohexane oil, 25 parts of tackifying resin, 1.5 parts of anti-aging agent, and 1 part of light-oxidation stabilizer.

[0029] The preparation method of the highly weather-resistant pressure-sensitive adhesive is as follows:

[0030] 1: Add naphthenic oil, isoprene, isobutylene and SIS and heat to 140-145°C;

[0031] 2: Add tackifying resin and stir for 1-2 hours;

[0032] 3: Add anti-aging agent and light stabilizer, stir for 30 minutes, and discharge after mixing evenly. The outermost side of the high weather-resistant pressure-sensitive adhesive layer structure is provided with a 0.1mm PET material structural film, and the outer side of the structural film is provided with a 0.03mm thick fluorocarbon weather-resistant coating.

[0033] Embodiment 2:

[0034] A roll-coated composite durable waterproof repair and maintenance system, whose main structure is as follows: the innermost side is provided with a thin-coated, room-temperature non-curing asphalt-based coating, the outer side is a durable, strong cross-laminated film structure, the outer side of the cross-laminated film structure is a weather-resistant pressure-sensitive adhesive coating, and the outermost side is provided with a PET structural film with a fluorocarbon coating.

[0035] The innermost room temperature non-curing asphalt coating has a thickness of 0.6-0.8 mm and is prepared from 100 parts of mixed asphalt, 30 parts of main modifier, 25 parts of rubber modified material, 3 parts of high temperature additive, 3 parts of rheological additive, 1.5 parts of defoamer, 50 parts of filler and 12 parts of styrene-butadiene latex.

[0036] Mixed asphalt is made of national standard 70 asphalt and rock asphalt, 70# asphalt: rock asphalt = 1:1, of which 70# asphalt has a softening point of 56-58, a needle penetration of 72-74, an elongation of ≥1000mm, and a colloid content of 15%. The ash content of rock asphalt is 20%, the needle penetration is 16, and the softening point is 100.

[0037] The room temperature non-curing waterproof coating uses tackifying resin + softening oil + cyclohexane oil + rubber material as the main modifiers, and the compounding ratio is tackifying resin + softening oil + cyclohexane oil + rubber material = 1:1.2:0.6:3. The tackifying resin is a compound of rosin resin and terpene resin, and the compounding ratio is 2:1. The softening oil uses rubber filler oil with an aromatic content of more than 50%. The cyclohexane oil uses a high molecular weight cyclohexane oil with a cyclohexane content of more than 80%, and its molecular weight is 12000-16000. The rubber modified material is a compound of styrene-butadiene rubber, chloroprene rubber, and butadiene rubber, and the compounding ratio is styrene-butadiene rubber: chloroprene rubber: butadiene rubber = 1:0.3:0.3.

[0038] The preparation method of room temperature non-curing waterproof coating is as follows:

[0039] 1: Add the above mixed asphalt rubber modified material into the reactor, stir and heat to 125-135℃;

[0040] 2: After the temperature reaches the expected value, add the above main modifier and rubber modified material, keep the temperature at 125-135°C, stir at 600-700RPM / min, and stir for 1 hour;

[0041] 3: Add light stabilizer and antioxidant and continue stirring for 30 minutes;

[0042] 4: Add rheological additive, keep warm at 125-135℃ and continue stirring for 30-40 minutes;

[0043] 5: Lower the temperature to below 60°C, add filler, defoamer, styrene-butadiene latex and continue stirring for 30 minutes, then discharge the material.

[0044] The durable strong cross-laminated film structure is designed with a thickness of 0.15mm and an elongation of ≥200%. It is made of two layers of 0.08mm high-strength PE films cross-laminated and laminated.

[0045] The durable strong cross-laminated membrane structure is coated with a high-strength acrylic isolation coating on the outside with a designed thickness of 0.10mm.

[0046] A highly weather-resistant pressure-sensitive adhesive layer is provided on the outside of the cross membrane, with a designed thickness of 0.2mm.

[0047] The high weather-resistant pressure-sensitive adhesive layer completely covers the non-curing coating structure and the cross-film structure, and is prepared from 20 parts of isoprene, 25 parts of isobutylene, 20 parts of SIS, 40 parts of cyclohexane oil, 30 parts of tackifying resin, 2 parts of anti-aging agent, and 1.5 parts of light-oxidation stabilizer.

[0048] The preparation method of the highly weather-resistant pressure-sensitive adhesive is as follows:

[0049] 1: Add naphthenic oil, isoprene, isobutylene and SIS and heat to 140-145°C;

[0050] 2: Add tackifying resin and stir for 1-2 hours;

[0051] 3: Add anti-aging agent and light stabilizer, stir for 30 minutes, and discharge the material after mixing evenly.

[0052] The outermost side of the highly weather-resistant pressure-sensitive adhesive layer structure is provided with a 0.09PET structural film, and the outer side of the structural film is provided with a 0.02 thick fluorocarbon weather-resistant coating.

[0053] Embodiment 3:

[0054] A roll-coated composite durable waterproof repair and maintenance system, whose main structure is as follows: the innermost side is provided with a thin-coated, room-temperature non-curing asphalt-based coating, the outer side is a durable, strong cross-laminated film structure, the outer side of the cross-laminated film structure is a weather-resistant pressure-sensitive adhesive coating, and the outermost side is provided with a PET structural film with a fluorocarbon coating.

[0055] The innermost room temperature non-curing asphalt coating has a thickness of 0.5-0.6 mm and is prepared from 100 parts of mixed asphalt, 25 parts of main modifier, 15 parts of rubber modified material, 2 parts of high temperature additive, 2 parts of rheological additive, 0.5 parts of defoamer, 40 parts of filler and 10 parts of styrene-butadiene latex.

[0056] The mixed asphalt is made of national standard 70 asphalt and rock asphalt, 70# asphalt: rock asphalt = 2.5:1, of which 70# asphalt has a softening point of 54, a needle penetration of 72, an elongation of ≥1000mm, and a colloid content of 19%. The ash content of rock asphalt is 25%, the needle penetration is 30, and the softening point is 108.

[0057] The room temperature non-curing waterproof coating uses tackifying resin + softening oil + cyclohexane oil + rubber material as the main modifiers, and the compounding ratio is tackifying resin + softening oil + cyclohexane oil + rubber material = 1:1.0:0.6:2.5, wherein the tackifying resin is compounded with rosin resin and terpene resin in a ratio of 2:1, the softening oil uses rubber filler oil with an aromatic content of more than 50%, the cyclohexane oil uses a high molecular weight cyclohexane oil with a cyclohexane content of more than 80%, and its molecular weight is 12000-14000, and the rubber modified material is compounded with styrene-butadiene rubber, chloroprene rubber, and butadiene rubber in a ratio of styrene-butadiene rubber: chloroprene rubber: butadiene rubber = 1:0.3:0.4.

[0058] The preparation method of room temperature non-curing waterproof coating is as follows:

[0059] 1: Add the above mixed asphalt rubber modified material into the reactor, stir and heat to 125-135℃;

[0060] 2: After the temperature reaches the expected value, add the above main modifier and rubber modified material, keep the temperature at 125-135°C, stir at 600-700RPM / min, and stir for 1 hour;

[0061] 3: Add light stabilizer and antioxidant and continue stirring for 30 minutes;

[0062] 4: Add rheological additive, keep warm at 125-135℃ and continue stirring for 30-40 minutes;

[0063] 5: Lower the temperature to below 60°C, add filler, defoamer, styrene-butadiene latex and continue stirring for 30 minutes, then discharge the material.

[0064] The durable strong cross-laminated film structure is designed to have a thickness of 0.12mm and an elongation of ≥200%. It is made of two layers of 0.06mm high-strength PE films cross-laminated and laminated.

[0065] The durable strong cross-laminated membrane structure is coated with a high-strength acrylic isolation coating on the outside with a designed thickness of 0.10mm.

[0066] A highly weather-resistant pressure-sensitive adhesive layer is provided on the outside of the cross membrane, with a designed thickness of 0.3mm.

[0067] The high weather-resistant pressure-sensitive adhesive layer completely covers the non-curing coating structure and the cross-film structure, and is prepared from 25 parts of isoprene, 20 parts of isobutylene, 10 parts of SIS, 25 parts of cyclohexane oil, 15 parts of tackifying resin, 1 part of anti-aging agent, and 1.5 parts of light-oxidation stabilizer.

[0068] The preparation method of the highly weather-resistant pressure-sensitive adhesive is as follows:

[0069] 1: Add naphthenic oil, isoprene, isobutylene and SIS and heat to 140-145°C;

[0070] 2: Add tackifying resin and stir for 1-2 hours;

[0071] 3: Add anti-aging agent and light stabilizer, stir for 30 minutes, and discharge after mixing evenly. The outermost side of the high weather-resistant pressure-sensitive adhesive layer structure is provided with a 0.010mm PET material structural film, and the outer side of the structural film is provided with a 0.02mm thick fluorocarbon weather-resistant coating.

[0072] Embodiment 4:

[0073] A roll-coated composite durable waterproof repair and maintenance system, whose main structure is as follows: the innermost side is provided with a thin-coated, room-temperature non-curing asphalt-based coating, the outer side is a durable, strong cross-laminated film structure, the outer side of the cross-laminated film structure is a weather-resistant pressure-sensitive adhesive coating, and the outermost side is provided with a PET structural film with a fluorocarbon coating.

[0074] The innermost room temperature non-curing asphalt coating has a thickness of 0.3-0.4 mm and is prepared from 100 parts of mixed asphalt, 20 parts of main modifier, 15 parts of rubber modified material, 2.5 parts of high temperature additive, 2.5 parts of rheological additive, 0.5 parts of defoamer, 40 parts of filler and 10 parts of styrene-butadiene latex.

[0075] The mixed asphalt is compounded with national standard 70 asphalt and rock asphalt, 70# asphalt: rock asphalt = 2.2:1, of which 70# asphalt has a softening point of 62, a needle penetration of 72, an elongation of ≥1000mm, and a colloid content of 22%. The ash content of rock asphalt is 28%, the needle penetration is 30, and the softening point is 100.

[0076] The room temperature non-curing waterproof coating uses tackifying resin + softening oil + cyclohexane oil + rubber material as the main modifiers, and the compounding ratio is tackifying resin + softening oil + cyclohexane oil + rubber material = 1:0.9:0.8:2.5. The tackifying resin is a compound of rosin resin and terpene resin with a compounding ratio of 2:1. The softening oil uses rubber filler oil with an aromatic content of more than 50%. The cyclohexane oil uses a high molecular weight cyclohexane oil with a cyclohexane content of more than 80%, and its molecular weight is 17000-18000. The rubber modified material is a compound of styrene-butadiene rubber, chloroprene rubber, and butadiene rubber, and the compounding ratio is styrene-butadiene rubber: chloroprene rubber: butadiene rubber = 1:0.3:0.3.

[0077] The preparation method of room temperature non-curing waterproof coating is as follows:

[0078] 1: Add the above mixed asphalt rubber modified material into the reactor, stir and heat to 125-135℃;

[0079] 2: After the temperature reaches the expected value, add the above main modifier and rubber modified material, keep the temperature at 125-135°C, stir at 600-700RPM / min, and stir for 1 hour;

[0080] 3: Add light stabilizer and antioxidant and continue stirring for 30 minutes;

[0081] 4: Add rheological additive, keep warm at 125-135℃ and continue stirring for 30-40 minutes;

[0082] 5: Lower the temperature to below 60°C, add filler, defoamer, styrene-butadiene latex and continue stirring for 30 minutes, then discharge the material.

[0083] The durable strong cross-laminated film structure is designed to have a thickness of 0.14mm and an elongation of ≥200%. It is made of two layers of 0.07mm high-strength PE films cross-laminated and laminated.

[0084] The durable strong cross-laminated membrane structure is coated with a high-strength acrylic isolation coating on the outside with a designed thickness of 0.06mm.

[0085] A highly weather-resistant pressure-sensitive adhesive layer is provided on the outside of the cross membrane, with a designed thickness of 0.25mm.

[0086] The high weather-resistant pressure-sensitive adhesive layer completely covers the non-curing coating structure and the cross-film structure, and is prepared from 25 parts of isoprene, 20 parts of isobutylene, 15 parts of SIS, 35 parts of cyclohexane oil, 20 parts of tackifying resin, 1.5 parts of anti-aging agent, and 1.0 parts of light-oxidation stabilizer.

[0087] The preparation method of the highly weather-resistant pressure-sensitive adhesive is as follows:

[0088] 1: Add naphthenic oil, isoprene, isobutylene and SIS and heat to 140-145°C;

[0089] 2: Add tackifying resin and stir for 1-2 hours;

[0090] 3: Add anti-aging agent and light stabilizer, stir for 30 minutes, and discharge after mixing evenly. The outermost side of the high weather-resistant pressure-sensitive adhesive layer structure is provided with a 0.12mm PET material structural film, and the outer side of the structural film is provided with a 0.04mm thick fluorocarbon weather-resistant coating.

[0091] The present invention designs a roll-coated composite durable waterproof repair and maintenance system, the innermost side of which is provided with a thin-coated room-temperature non-curing asphalt-based material, which can be constructed at room temperature and has high creep and adhesion. During construction, the material is scraped and coated on the water-facing or water-retaining surface of the waterproof structure to be repaired. Because the material has good permeability and creep, a 0.10-0.15mm durable strong cross-laminated film structure is provided on the outside of the non-curing coating as the first protective layer of the waterproof repair and maintenance structure. The structure serves as the intermediate structure of the waterproof repair structure and has a good bonding effect with the room-temperature non-curing coating on the inner side. A high weather-resistant pressure-sensitive adhesive layer is provided on the outside of the strong cross-laminated film with a designed thickness of 0.2-0.3mm, which completely covers the above two-layer structure, further improving the sealing performance of the material and the bonding effect with the substrate. A 0.09-0.12mm thick film is provided on the outermost side of the structure. The PET structural film has a fluorocarbon reflective coating on the outside, which can further improve the weather resistance and structural stability of the material and prevent the material from aging and damage due to exposure to the environment.

[0092] Comparative Example 1

[0093] A roll-coated composite durable waterproof repair and maintenance system, the main structure of which is as follows: a thin-coated room-temperature non-curing asphalt-based coating is provided on the innermost side, and a durable strong cross-laminated membrane structure is provided on the outer side.

[0094] The innermost room temperature non-curing asphalt coating has a thickness of 0.4-0.5 mm and is prepared from 100 parts of mixed asphalt, 25 parts of main modifier, 20 parts of rubber modified material, 2 parts of high temperature additive, 3 parts of rheological additive, 0.5 parts of defoamer, 40 parts of filler and 10 parts of styrene-butadiene latex.

[0095] The mixed asphalt is made of national standard 70 asphalt and rock asphalt, 70# asphalt: rock asphalt = 2:1, of which 70# asphalt has a softening point of 52-53, a needle penetration of 72-74, an elongation of ≥1000mm, and a colloid content of 18%. The ash content of rock asphalt is 25%, the needle penetration is 16, and the softening point is 105.

[0096] The room temperature non-curing waterproof coating uses tackifying resin + softening oil + cycloalkane oil + rubber material as the main modifiers, and the compounding ratio is tackifying resin + softening oil + cycloalkane oil + rubber material = 1:1:0.6:2. The tackifying resin is compounded with rosin resin and terpene resin in a ratio of 2:1. The softening oil uses rubber filler oil with an aromatic content of more than 50%. The cycloalkane oil uses high molecular weight cycloalkane oil with a cycloalkane content of more than 80%, and its molecular weight is 8000-10000. The rubber modified material is compounded with styrene-butadiene rubber, chloroprene rubber, and butadiene rubber, and the compounding ratio is styrene-butadiene rubber: chloroprene rubber: butadiene rubber = 1:0.4:0.3.

[0097] The preparation method of room temperature non-curing waterproof coating is as follows:

[0098] 1: Add the above mixed asphalt rubber modified material into the reactor, stir and heat to 125-135℃;

[0099] 2: After the temperature reaches the expected value, add the above main modifier and rubber modified material, keep the temperature at 125-135°C, stir at 600-700RPM / min, and stir for 1 hour;

[0100] 3: Add light stabilizer and antioxidant and continue stirring for 30 minutes;

[0101] 4: Add rheological additive, keep warm at 125-135℃ and continue stirring for 30-40 minutes;

[0102] 5: Lower the temperature to below 60°C, add filler, defoamer, styrene-butadiene latex and continue stirring for 30 minutes, then discharge the material.

[0103] The durable strong cross-laminated film structure is designed to have a thickness of 0.10mm and an elongation of ≥200%. It is made of two layers of 0.05mm high-strength PE films that are cross-laminated and composited.

[0104] The outer side of the durable strong cross-laminated membrane structure is coated with a high-strength acrylic isolation coating with a designed thickness of 0.05-0.06mm.

[0105] Comparative Example 2

[0106] A roll-coated composite durable waterproof repair and maintenance system has the following main structure: a weather-resistant pressure-sensitive adhesive coating is provided on the innermost side, and a PET structural film with a fluorocarbon coating is provided on the outer side.

[0107] Highly weather-resistant pressure-sensitive adhesive layer, designed thickness is 0.25-0.3mm.

[0108] The high weather-resistant pressure-sensitive adhesive layer is prepared from 25 parts of isoprene, 20 parts of isobutylene, 15 parts of SIS, 30 parts of cyclohexane oil, 25 parts of tackifying resin, 1.5 parts of anti-aging agent and 1 part of light-oxidation stabilizer.

[0109] The preparation method of the highly weather-resistant pressure-sensitive adhesive is as follows:

[0110] 1: Add naphthenic oil, isoprene, isobutylene and SIS and heat to 140-145°C;

[0111] 2: Add tackifying resin and stir for 1-2 hours;

[0112] 3: Add anti-aging agent and light stabilizer, stir for 30 minutes, and discharge the material after mixing evenly.

[0113] The outermost side of the highly weather-resistant pressure-sensitive adhesive layer structure is provided with a 0.1mm PET material structural film, and the outer side of the structural film is provided with a 0.03mm thick fluorocarbon weather-resistant coating.

[0114] Comparative Example 3

[0115] A roll-coated composite durable waterproof repair and maintenance system, whose main structure is as follows: the innermost side is provided with a thin-coated, room-temperature non-curing asphalt-based coating, the outer side is a durable, strong cross-laminated film structure, the outer side of the cross-laminated film structure is a weather-resistant pressure-sensitive adhesive coating, and the outermost side is provided with a PET structural film with a fluorocarbon coating.

[0116] The innermost room temperature non-curing asphalt coating has a thickness of 1.5-2.0 mm and is prepared from 100 parts of mixed asphalt, 25 parts of main modifier, 20 parts of rubber modified material, 2 parts of high temperature additive, 3 parts of rheological additive, 0.5 parts of defoamer, 40 parts of filler and 10 parts of styrene-butadiene latex.

[0117] The mixed asphalt is made of national standard 70 asphalt and rock asphalt, 70# asphalt: rock asphalt = 2:1, of which 70# asphalt has a softening point of 52-53, a needle penetration of 72-74, an elongation of ≥1000mm, and a colloid content of 18%. The ash content of rock asphalt is 25%, the needle penetration is 16, and the softening point is 105.

[0118] The room temperature non-curing waterproof coating uses tackifying resin + softening oil + cycloalkane oil + rubber material as the main modifiers, and the compounding ratio is tackifying resin + softening oil + cycloalkane oil + rubber material = 1:1:0.6:2. The tackifying resin is compounded with rosin resin and terpene resin in a ratio of 2:1. The softening oil uses rubber filler oil with an aromatic content of more than 50%. The cycloalkane oil uses high molecular weight cycloalkane oil with a cycloalkane content of more than 80%, and its molecular weight is 8000-10000. The rubber modified material is compounded with styrene-butadiene rubber, chloroprene rubber, and butadiene rubber, and the compounding ratio is styrene-butadiene rubber: chloroprene rubber: butadiene rubber = 1:0.4:0.3.

[0119] The preparation method of room temperature non-curing waterproof coating is as follows:

[0120] 1: Add the above mixed asphalt rubber modified material into the reactor, stir and heat to 125-135℃;

[0121] 2: After the temperature reaches the expected value, add the above main modifier and rubber modified material, keep the temperature at 125-135°C, stir at 600-700RPM / min, and stir for 1 hour;

[0122] 3: Add light stabilizer and antioxidant and continue stirring for 30 minutes;

[0123] 4: Add rheological additive, keep warm at 125-135℃ and continue stirring for 30-40 minutes;

[0124] 5: Lower the temperature to below 60°C, add filler, defoamer, styrene-butadiene latex and continue stirring for 30 minutes, then discharge the material.

[0125] The durable strong cross-laminated film structure is designed to have a thickness of 0.10mm and an elongation of ≥200%. It is made of two layers of 0.05mm high-strength PE films that are cross-laminated and composited.

[0126] The outer side of the durable strong cross-laminated membrane structure is coated with a high-strength acrylic isolation coating with a designed thickness of 0.05-0.06mm.

[0127] A highly weather-resistant pressure-sensitive adhesive layer is provided on the outside of the cross membrane, with a designed thickness of 0.25-0.3mm.

[0128] The high weather-resistant pressure-sensitive adhesive layer completely covers the non-curing coating structure and the cross-film structure, and is prepared from 25 parts of isoprene, 20 parts of isobutylene, 15 parts of SIS, 30 parts of cyclohexane oil, 25 parts of tackifying resin, 1.5 parts of anti-aging agent, and 1 part of light-oxidation stabilizer.

[0129] The preparation method of the highly weather-resistant pressure-sensitive adhesive is as follows:

[0130] 1: Add naphthenic oil, isoprene, isobutylene and SIS and heat to 140-145°C;

[0131] 2: Add tackifying resin and stir for 1-2 hours;

[0132] 3: Add anti-aging agent and light stabilizer, stir for 30 minutes, and discharge the material after mixing evenly.

[0133] The outermost side of the highly weather-resistant pressure-sensitive adhesive layer structure is provided with a 0.1mm PET material structural film, and the outer side of the structural film is provided with a 0.03mm thick fluorocarbon weather-resistant coating.

[0134] Comparative Example 4

[0135] A roll-coated composite durable waterproof repair and maintenance system has the following main structure: a thin-coated room-temperature non-curing asphalt-based coating is provided on the innermost side, a durable strong cross-laminated film structure is provided on the outer side, a weather-resistant pressure-sensitive adhesive coating is provided on the outermost side, and a PET structural film is provided on the outermost side.

[0136] The innermost room temperature non-curing asphalt coating has a thickness of 0.4-0.5 mm and is prepared from 100 parts of mixed asphalt, 25 parts of main modifier, 20 parts of rubber modified material, 2 parts of high temperature additive, 3 parts of rheological additive, 0.5 parts of defoamer, 40 parts of filler and 10 parts of styrene-butadiene latex.

[0137] The mixed asphalt is made of national standard 70 asphalt and rock asphalt, 70# asphalt: rock asphalt = 2:1, of which 70# asphalt has a softening point of 52-53, a needle penetration of 72-74, an elongation of ≥1000mm, and a colloid content of 18%. The ash content of rock asphalt is 25%, the needle penetration is 16, and the softening point is 105.

[0138] The room temperature non-curing waterproof coating uses tackifying resin + softening oil + cycloalkane oil + rubber material as the main modifiers, and the compounding ratio is tackifying resin + softening oil + cycloalkane oil + rubber material = 1:1:0.6:2. The tackifying resin is compounded with rosin resin and terpene resin in a ratio of 2:1. The softening oil uses rubber filler oil with an aromatic content of more than 50%. The cycloalkane oil uses high molecular weight cycloalkane oil with a cycloalkane content of more than 80%, and its molecular weight is 8000-10000. The rubber modified material is compounded with styrene-butadiene rubber, chloroprene rubber, and butadiene rubber, and the compounding ratio is styrene-butadiene rubber: chloroprene rubber: butadiene rubber = 1:0.4:0.3.

[0139] The preparation method of room temperature non-curing waterproof coating is as follows:

[0140] 1: Add the above mixed asphalt rubber modified material into the reactor, stir and heat to 125-135℃;

[0141] 2: After the temperature reaches the expected value, add the above main modifier and rubber modified material, keep the temperature at 125-135°C, stir at 600-700RPM / min, and stir for 1 hour;

[0142] 3: Add light stabilizer and antioxidant and continue stirring for 30 minutes;

[0143] 4: Add rheological additive, keep warm at 125-135℃ and continue stirring for 30-40 minutes;

[0144] 5: Lower the temperature to below 60°C, add filler, defoamer, styrene-butadiene latex and continue stirring for 30 minutes, then discharge the material.

[0145] The durable strong cross-laminated film structure is designed to have a thickness of 0.10mm and an elongation of ≥200%. It is made of two layers of 0.05mm high-strength PE films that are cross-laminated and composited.

[0146] The outer side of the durable strong cross-laminated membrane structure is coated with a high-strength acrylic isolation coating with a designed thickness of 0.05-0.06mm.

[0147] A highly weather-resistant pressure-sensitive adhesive layer is provided on the outside of the cross membrane, with a designed thickness of 0.25-0.3mm.

[0148] The high weather-resistant pressure-sensitive adhesive layer completely covers the non-curing coating structure and the cross-film structure, and is prepared from 25 parts of isoprene, 20 parts of isobutylene, 15 parts of SIS, 30 parts of cyclohexane oil, 25 parts of tackifying resin, 1.5 parts of anti-aging agent, and 1 part of light-oxidation stabilizer.

[0149] The preparation method of the highly weather-resistant pressure-sensitive adhesive is as follows:

[0150] 1: Add naphthenic oil, isoprene, isobutylene and SIS and heat to 140-145°C;

[0151] 2: Add tackifying resin and stir for 1-2 hours;

[0152] 3: Add anti-aging agent and light stabilizer, stir for 30 minutes, and discharge the material after mixing evenly.

[0153] The outermost layer of the highly weather-resistant pressure-sensitive adhesive layer is provided with a 0.1mm PET structural film

[0154] Comparative Example 5

[0155] Commercially available single-sided tireless self-adhesive 1.5mm thick waterproof membrane for roof repair

[0156] Comparative Example 6

[0157] Commercially available polymer emulsion waterproof mortar is used for roof repair, with a design thickness of 6mm

[0158] Comparative Example 7

[0159] Commercially available 0.3mm thick non-asphalt-based pressure-sensitive adhesive coating + 0.1mm thick fluorocarbon film on the outside

[0160] The long-term comparison of outdoor repair effects of the embodiment and the comparative example is shown in the following table:

[0161]

[0162] The above table shows the performance verification results of the embodiments and the comparative examples. It can be seen from the above table that embodiments 1-4 are durable waterproof repair and maintenance systems designed and processed using the technical solution described in the patent of the present invention. The composite use of multi-level lightweight structures can achieve a long-lasting effect of the waterproof repair structure and meet the weather resistance requirements of the waterproof repair project for more than 2 years.

[0163] Compared with Example 1, Comparative Example 1 removed the outer pressure-sensitive adhesive layer coating structure and the outermost PET structural film and fluorocarbon weather-resistant coating. During the verification period of 6 months, cracks and weathering of the outer cross-membrane structure occurred, and leakage eventually occurred.

[0164] Compared with Example 1, Comparative Example 2 removes the inner room temperature non-curing thin coating structure and the cross membrane structure. The material can ensure a good waterproof repair effect in the initial stage, but leakage of the waterproof layer will occur in the later stage.

[0165] Compared with Example 1, Comparative Example 3 has the same material design structure, but the innermost non-curing coating is designed to be 1.5-2.0 mm, which exceeds the design standard of 0.4-0.5 mm required by this patent. The repair structure is exposed for a long time, and the non-curing coating slips, which causes waterproof leakage.

[0166] Compared with Example 1, in Comparative Example 4, the outer aging-resistant fluorocarbon film structure was removed, and cracks appeared in the outer structural film after long-term outdoor exposure.

[0167] By comparing Examples 5-7 with Examples 1-4, it can be seen that the single-layer repair waterproof structure cannot meet the requirements of weather resistance and waterproof effect of the material for long-term outdoor exposure, and the material has slipped and cracked in short-term use.

[0168] The present invention designs a roll-coated composite durable waterproof repair and maintenance system, which adopts a multi-layer structure and an aging-resistant design, greatly improving the sealing performance of the material and the bonding effect with the substrate, improving the weather resistance and structural stability of the material, and preventing the material from aging and damage due to exposure to the environment.

[0169] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A roll-coated composite durable waterproof repair and maintenance system, whose main structure is as follows: the innermost side is provided with a thin-coated, room-temperature non-curing asphalt-based coating, the outer side is a durable, strong cross-laminated film structure, the outer side of the cross-laminated film structure is a weather-resistant pressure-sensitive adhesive coating, and the outermost side is provided with a PET structural film with a fluorocarbon coating.

2. The coil coating composite durable waterproof repair and maintenance system according to claim 1, characterized in that: The innermost room temperature non-curing asphalt coating has a thickness of 0.3-0.8 mm and is prepared from 100 parts of mixed asphalt, 20-30 parts of main modifier, 15-25 parts of rubber modified material, 2-3 parts of high temperature additive, 2-3 parts of rheological additive, 0.5-1.5 parts of defoaming agent, 30-50 parts of filler and 10-12 parts of styrene-butadiene latex.

3. The coil coating composite durable waterproof repair and maintenance system according to claims 1 and 2, characterized in that: The mixed asphalt is compounded from national standard 70 asphalt and rock asphalt, 70# asphalt: rock asphalt = 1-2.5:1, wherein the softening point of 70# asphalt is 45-66, the needle penetration is 66-80, the elongation is ≥1000mm, and the colloid content is ≥15%. The ash content of rock asphalt is 20-40%, the needle penetration is 15-35, and the softening point is 95-110.

4. The coil coating composite durable waterproof repair and maintenance system according to claims 1 and 2, characterized in that: The room temperature non-curing waterproof coating uses tackifying resin + softening oil + cycloalkane oil + rubber material as main modifiers, and the compounding ratio is tackifying resin + softening oil + cycloalkane oil + rubber material = 1: 0.8-1.2: 0.6-0.8: 2-3; wherein the tackifying resin is prepared by compounding rosin resin and terpene resin, and the compounding ratio is 2: 1, the softening oil uses rubber filling oil with an aromatic content of more than 50%, and the cycloalkane oil uses high molecular weight cycloalkane oil with a cycloalkane content of more than 80%, and the molecular weight is 6000-18000, and the rubber modified material is compounded by styrene-butadiene rubber, chloroprene rubber, and butadiene rubber, and the compounding ratio is styrene-butadiene rubber: chloroprene rubber: butadiene rubber = 1: 0.3-0.5: 0.2-0.

4.

5. The coil coating composite durable waterproof repair and maintenance system according to claim 1, characterized in that: The durable strong cross-laminated film structure is designed to have a thickness of 0.10-0.15 mm and an elongation of ≥200%, and is formed by cross-laminated composite of two 0.05-0.08 mm high-strength PE films.

6. The coil coating composite durable waterproof repair and maintenance system according to claims 1 and 5, characterized in that: The outer side of the durable strong cross-laminated film structure is coated with a high-strength acrylic isolation coating with a designed thickness of 0.05-0.10 mm.

7. The coil coating composite durable waterproof repair and maintenance system according to claim 1, characterized in that: A highly weather-resistant pressure-sensitive adhesive layer is arranged on the outer side of the cross film, and the designed thickness is 0.2-0.3 mm.

8. The coil coating composite durable waterproof repair and maintenance system according to claim 1, characterized in that: The high weather-resistant pressure-sensitive adhesive layer completely covers the non-curing coating structure and the cross-film structure, and is prepared from 20-30 parts of isoprene, 15-25 parts of isobutylene, 10-20 parts of SIS, 25-40 parts of cyclohexane oil, 15-30 parts of tackifying resin, 1-2 parts of anti-aging agent, and 0.5-1.5 parts of light-oxidation stabilizer.

9. The coil coating composite durable waterproof repair and maintenance system according to claim 1, characterized in that: The outermost side of the highly weather-resistant pressure-sensitive adhesive layer structure is provided with a 0.09-0.12 mm PET material structural film, and the outer side of the structural film is provided with a 0.02-0.04 mm thick fluorocarbon weather-resistant coating.

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