DOB fast-adhesion and permanent-adhesion high-molecular two-component waterproof coating and preparation method thereof

Abstract

The invention discloses a DOB fast-adhesion and persistent-adhesion polymer two-component waterproof coating and a preparation method thereof.The DOB fast-adhesion and persistent-adhesion polymer two-component waterproof coating comprises a component A and a component B. The component A comprises, by weight, 60%-75% of modified asphalt, 20%-30% of petroleum resin and 5%-10% of polymer rubber, and the component B is specifically a curing agent. When in use, the waterproof coating is sprayed at normal temperature, the A material and the B material are instantly demulsified after being contacted, a waterproof layer which keeps viscidity for a long time is formed after demulsification, and the waterproof coating is fully adhered to a base surface, can be contacted with air for a long time, is not cured, is insoluble in water, has excellent adhesive property, is suitable for a complex construction base surface, and can keep a viscous colloid state after being constructed and formed; the waterproof coating has the characteristics of self-healing, low temperature resistance, heat resistance and the like, can be compounded with various waterproof materials for use, has super-strong binding power, forms full adhesion with various base surfaces, is subjected to 100% cohesive failure, and does not fall off or peel off.

Description

Technical Field

[0001] The invention relates to the technical field of waterproof coatings, and in particular to a DOB fast-adhesive and long-adhesive polymer two-component waterproof coating and a preparation method thereof. Background Art

[0002] Waterproof coatings are coating materials used to prevent moisture from penetrating into building materials or structures. They are widely used in buildings, bridges, roads, basements and other fields.

[0003] The Chinese invention patent with authorization announcement number CN113831804B discloses a waterproof coating and its preparation method. The waterproof coating is used for repairing and waterproofing asphalt coils, and is composed of liquid and powder. The liquid includes: 80-90 parts by weight of silane-modified acrylic emulsion; 5-10 parts by weight of water; 1-3 parts by weight of emulsifier; 0.2-1.0 parts by weight of wetting dispersant; 1-3 parts by weight of film-forming aid; 1-3 parts by weight of other additives; the powder includes: 30-60 parts by weight of cement. The waterproof coating provided by this application has high permeability and can penetrate deep into the repaired asphalt coil to fill, repair and block the pores of cracked and aged coils.

[0004] The waterproof coating in the above patent has average bonding effect with the base surface and coating mortar during use, and average bonding effect with the roll material, and is prone to falling off, peeling, bulging and bubbling on the finished construction surface. Summary of the invention

[0005] The purpose of the present invention is to provide a DOB quick-adhesion and long-adhesion polymer two-component waterproof coating and a preparation method thereof, which solves the problems that the existing waterproof coating has average bonding effect with the base surface and coating mortar during use, average bonding effect with the coiled material, and is prone to falling off, peeling, bulging and bubbling on the finished construction surface.

[0006] The present invention solves the above technical problems through the following technical solutions. A DOB fast-adhesive and long-adhesive polymer two-component waterproof coating comprises:

[0007] The invention comprises component A and component B, wherein the component A comprises modified asphalt, petroleum resin and polymer rubber, and the component B is specifically a curing agent.

[0008] Preferably, the modified asphalt accounts for 60% to 75% by weight, the petroleum resin accounts for 20% to 30% by weight, and the polymer rubber accounts for 5% to 10% by weight.

[0009] Preferably, the curing agent mainly comprises aluminum salt and does not contain chloride ions.

[0010] A method for preparing a DOB fast-adhesive and long-adhesive polymer two-component waterproof coating, specifically comprising the following steps:

[0011] Step 1: Preparation of component A: Prepare modified asphalt, petroleum resin and polymer rubber according to demand to prepare component A;

[0012] Step 2, preparation of component B: selecting aluminum salt and fully mixing it with other ingredients to prepare component B;

[0013] Step 3: Application: Spray component A and component B through a spray gun with two nozzles to form the required waterproof coating layer.

[0014] Preferably, the preparation of component A specifically comprises the following steps:

[0015] Step S1, compounding modified asphalt: modifying the asphalt and compounding it with petroleum resin to improve its performance;

[0016] Step S2, emulsification: the modified asphalt is emulsified by an emulsifier to generate an emulsion;

[0017] Step S3, compounding polymer rubber: mixing the modified asphalt emulsion with the polymer rubber, stirring them evenly to ensure that the materials are well dispersed, and forming component A with excellent bonding and waterproof properties;

[0018] Step S4, cooling and packaging: final packaging is performed after cooling treatment to ensure safety and stability during transportation and storage.

[0019] Preferably, the preparation of component B specifically comprises the following steps:

[0020] Step V1, powder mixing: select aluminum salt and other ingredients and mix them thoroughly to ensure their uniformity;

[0021] Step V2, measuring and packaging: measuring and packaging is performed to ensure the correct ratio when used.

[0022] Preferably, the application specifically comprises the following steps:

[0023] Step N1, preparation: First clean the construction surface to ensure that there is no dust, oil and other pollutants to ensure the adhesion of the coating and ensure that component A (liquid polymer) and component B (curing agent) are evenly mixed;

[0024] Step N2, spraying: spraying component A and component B through a spray gun with two nozzles, and nozzle 1 (component A) and nozzle 2 (component B) are started at the same time;

[0025] Step N3, mixing and reaction: Component A and component B collide and mix, and begin to condense on the construction surface. After condensation is completed, salting out begins to precipitate water;

[0026] Step N4, molding: The coating will begin to gradually solidify to form a dense waterproof film. As the curing progresses, the coating will eventually form a stable, waterproof film with good elasticity and tensile strength, which can effectively resist the penetration of water.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. The waterproof coating of the present invention is sprayed at room temperature when used. The AB materials demulsify instantly after contact, and a waterproof layer with long-lasting viscosity is formed after demulsification. It is fully adhered to the base surface and can be in contact with the air for a long time. It is not solidified and is insoluble in water. It has excellent bonding performance and is suitable for complex construction base surfaces. The product can maintain a viscous colloidal state after construction and has the characteristics of self-healing, low temperature resistance, heat resistance, etc., and can be used in combination with a variety of waterproof materials.

[0029] 2. The waterproof coating of the present invention has super strong adhesion, and forms full adhesion with various base surfaces, 100% cohesive failure, no falling off, no peeling, and no bulging or blistering on the completed construction surface. It can be compounded with self-adhesive, SBS and other waterproof membranes, has good adhesion effect at room temperature, high strength, good full adhesion effect, is green and environmentally friendly, and has good high and low temperature resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the preparation process of the present invention;

[0031] Figure 2 This is a schematic diagram of the process for preparing component A in the present invention;

[0032] Figure 3 This is a schematic diagram of the process for preparing component B in the present invention;

[0033] Figure 4 It is a schematic diagram of the coating work in the present invention;

[0034] Figure 5 It is a schematic diagram of the process of applying in the present invention;

[0035] Figure 6 It is a schematic diagram of the peel strength test under different conditions in the present invention. DETAILED DESCRIPTION

[0036] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0037] A DOB quick-adhesion and long-adhesion polymer two-component waterproof coating comprises a component A and a component B. The component A comprises modified asphalt, petroleum resin and polymer rubber, and the component B is specifically a curing agent.

[0038] Furthermore, the weight of modified asphalt accounts for 60% to 75%, the weight of petroleum resin accounts for 20% to 30%, and the weight of polymer rubber accounts for 5% to 10%.

[0039] Furthermore, the curing agent mainly comprises aluminum salt and does not contain chloride ions.

[0040] like Figure 1-6 As shown, a preparation method of a DOB fast-adhesive and long-adhesive polymer two-component waterproof coating comprises a preparation unit, an asphalt powder preparation unit, a waterproof roll material preparation unit and a performance testing unit, and specifically comprises the following steps:

[0041] Step 1: Preparation of component A: Prepare modified asphalt, petroleum resin and polymer rubber according to demand to prepare component A;

[0042] Step 2, preparation of component B: selecting aluminum salt and fully mixing it with other ingredients to prepare component B;

[0043] Step 3: Application: Spray component A and component B through a spray gun with two nozzles to form the required waterproof coating layer.

[0044] Further, the preparation of component A specifically includes the following steps:

[0045] Step S1, compounding modified asphalt: modifying the asphalt and compounding it with petroleum resin to improve its performance;

[0046] Step S2, emulsification: the modified asphalt is emulsified by an emulsifier to generate an emulsion;

[0047] Step S3, compounding polymer rubber: mixing the modified asphalt emulsion with the polymer rubber, stirring them evenly to ensure that the materials are well dispersed, and forming component A with excellent bonding and waterproof properties;

[0048] Step S4, cooling and packaging: final packaging is performed after cooling treatment to ensure safety and stability during transportation and storage.

[0049] Furthermore, the preparation of component B specifically includes the following steps:

[0050] Step V1, powder mixing: select aluminum salt and other ingredients and mix them thoroughly to ensure their uniformity;

[0051] Step V2, measuring and packaging: measuring and packaging is performed to ensure the correct ratio when used.

[0052] Furthermore, the application specifically comprises the following steps:

[0053] Step N1, preparation: First clean the construction surface to ensure that there is no dust, oil and other pollutants to ensure the adhesion of the coating and ensure that component A (liquid polymer) and component B (curing agent) are evenly mixed;

[0054] Step N2, spraying: spraying component A and component B through a spray gun with two nozzles, and nozzle 1 (component A) and nozzle 2 (component B) are started at the same time;

[0055] Step N3, mixing and reaction: Component A and component B collide and mix, and begin to condense on the construction surface. After condensation is completed, salting out begins to precipitate water;

[0056] Step N4, molding: The coating will begin to gradually solidify to form a dense waterproof film. As the curing progresses, the coating will eventually form a stable, waterproof film with good elasticity and tensile strength, which can effectively resist the penetration of water.

[0057] Take the A component and the B component prepared in the same ratio, spray them on the self-adhesive coil and the SBS coil through two nozzle spray guns, and the different treatment conditions include three different treatment conditions:

[0058] No treatment: Test the performance of the material without any special treatment;

[0059] 7 days immersion: Test the performance after 7 days of immersion in water.

[0060] Wet Base: Test the performance of the material under wet base conditions;

[0061] Peel strength test was performed, and the test results were as follows: Figure 6 As shown, it can be seen from the test results that DOB quick-adhesive and long-lasting polymer two-component waterproof coating has good bonding effect with self-adhesive, SBS and other waterproof membranes. It has good bonding effect, high strength and good full bonding effect at room temperature. The polymer water-based coating has super strong bonding force and forms full adhesion with various base surfaces, with 100% cohesive failure, no falling off or peeling, and no bulging or bubbling on the completed construction surface.

[0062] Embodiment 1

[0063] This embodiment provides a technical solution: a DOB fast-adhesive and long-adhesive polymer two-component waterproof coating, including component A and component B, component A includes modified asphalt, petroleum resin and polymer rubber, and component B is specifically a curing agent.

[0064] Furthermore, the modified asphalt accounts for 60% by weight, the petroleum resin accounts for 30% by weight, and the polymer rubber accounts for 10% by weight.

[0065] Furthermore, the curing agent mainly contains aluminum salt and does not contain chloride ions, and the aluminum salt content is 100%.

[0066] Embodiment 2

[0067] This embodiment provides a technical solution: a DOB fast-adhesive and long-adhesive polymer two-component waterproof coating, including component A and component B, component A includes modified asphalt, petroleum resin and polymer rubber, and component B is specifically a curing agent.

[0068] Furthermore, the modified asphalt accounts for 65% by weight, the petroleum resin accounts for 25% by weight, and the polymer rubber accounts for 10% by weight.

[0069] Furthermore, the curing agent mainly contains aluminum salt and does not contain chloride ions, and the aluminum salt content is 90%.

[0070] Embodiment 3

[0071] This embodiment provides a technical solution: a DOB fast-adhesive and long-adhesive polymer two-component waterproof coating, including component A and component B, component A includes modified asphalt, petroleum resin and polymer rubber, and component B is specifically a curing agent.

[0072] Furthermore, the modified asphalt accounts for 70% by weight, the petroleum resin accounts for 20% by weight, and the polymer rubber accounts for 10% by weight.

[0073] Furthermore, the curing agent mainly contains aluminum salt and does not contain chloride ions, and the aluminum salt content is 85%.

[0074] Embodiment 4

[0075] This embodiment provides a technical solution: a DOB fast-adhesive and long-adhesive polymer two-component waterproof coating, including component A and component B, component A includes modified asphalt, petroleum resin and polymer rubber, and component B is specifically a curing agent.

[0076] Furthermore, the modified asphalt accounts for 70% by weight, the petroleum resin accounts for 25% by weight, and the polymer rubber accounts for 5% by weight.

[0077] Furthermore, the curing agent mainly contains aluminum salt and does not contain chloride ions, and the aluminum salt content is 100%.

[0078] Embodiment 5

[0079] This embodiment provides a technical solution: a DOB fast-adhesive and long-adhesive polymer two-component waterproof coating, including component A and component B, component A includes modified asphalt, petroleum resin and polymer rubber, and component B is specifically a curing agent.

[0080] Furthermore, the modified asphalt accounts for 75% by weight, the petroleum resin accounts for 20% by weight, and the polymer rubber accounts for 5% by weight.

[0081] Furthermore, the curing agent mainly contains aluminum salt and does not contain chloride ions, and the aluminum salt content is 100%.

[0082] Take equal amounts of the waterproof coating obtained in Example 1, the waterproof coating obtained in Example 2, the waterproof coating obtained in Example 3, the waterproof coating obtained in Example 4 and the waterproof coating obtained in Example 5, and test the environmental performance of the prepared waterproof coatings. The volatile organic compounds (VOC); free formaldehyde; the sum of benzene, toluene, ethylbenzene and xylene; and ammonia are tested and the following table is obtained:

[0083] Standard requirements: Volatile organic compounds (VOC) ≤ 80g / L;

[0084] Free formaldehyde ≤100mg / kg;

[0085] The sum of benzene, toluene, ethylbenzene and xylene is ≤300mg / kg;

[0086] Ammonia ≤ 500 mg / kg;

[0087] Table 1 Environmental performance test table of waterproof coating

[0088]

[0089] From Table 1, by comparing the environmental performance of the waterproof coating obtained in Example 1, the waterproof coating obtained in Example 2, the waterproof coating obtained in Example 3, the waterproof coating obtained in Example 4 and the waterproof coating obtained in Example 5, it can be known that the content of harmful substances in the waterproof coatings of each embodiment meets the standard requirements.

[0090] Take equal amounts of the waterproof coating obtained in Example 1, the waterproof coating obtained in Example 2, the waterproof coating obtained in Example 3, the waterproof coating obtained in Example 4 and the waterproof coating obtained in Example 5, test the high and low temperature resistance of the prepared waterproof coating, and test its heat resistance; elongation; impermeability; low temperature flexibility to obtain the following table:

[0091] Standard requirements:

[0092] Heat resistance: According to T / CBMF 84-2020, the coating is tested at 120±2℃ to ensure that the coating will not flow, slide or drip at high temperatures;

[0093] Elongation: According to T / CBMF 84-2020, the elongation requirement is ≥30mm, which indicates the ability of the material to stretch when stretched;

[0094] Waterproofness: According to T / CBMF 84-2020, the test condition is to maintain a pressure of 0.3MPa for 120 minutes to ensure that there is no water penetration within the specified time;

[0095] Low temperature flexibility: According to T / CBMF 84-2020, it is required that there is no breakage at -25°C, ensuring that the material can still maintain flexibility at low temperatures;

[0096] Table 2 High and low temperature resistance test table of waterproof coating

[0097] Serial number Heat resistance Elongation, mm Waterproof Low temperature flexibility Embodiment 1 120 32 No leakage -25 Embodiment 2 125 34 No leakage -30 Embodiment 3 130 36 No leakage -35 Embodiment 4 135 38 No leakage -30 Embodiment 5 140 40 No leakage -25

[0098] Table 2 shows that the high and low temperature resistance of the waterproof coating obtained in Example 1, the waterproof coating obtained in Example 2, the waterproof coating obtained in Example 3, the waterproof coating obtained in Example 4 and the waterproof coating obtained in Example 5 are compared. It can be seen that all examples meet the requirement of 120°C and perform well. All examples meet the requirement of elongation ≥ 30mm. Examples 3 and 5 perform best. All examples maintain no leakage for 120 minutes under a pressure of 0.3MPa, meeting the standard. Example 3 performs best and can maintain flexibility at -35°C.

[0099] Example 3 (70% modified asphalt, 20% petroleum resin, 10% polymer rubber) performs best in terms of elongation and low-temperature flexibility. If the data is too little, more groups can be made.

[0100] The above are only preferred embodiments of the present invention, which are only illustrative and not restrictive. Those skilled in the art understand that many changes, modifications, and even equivalences may be made to the present invention within the spirit and scope defined by the claims, but all of them will fall within the scope of protection of the present invention.

Claims

1. A DOB fast-adhesive and long-adhesive polymer two-component waterproof coating, comprising component A and component B, characterized in that: The component A includes modified asphalt, petroleum resin and polymer rubber, and the component B is specifically a curing agent.

2. A DOB fast-adhesive and long-adhesive polymer two-component waterproof coating as claimed in claim 1, characterized in that: The modified asphalt accounts for 60% to 75% by weight, the petroleum resin accounts for 20% to 30% by weight, and the high molecular rubber accounts for 5% to 10% by weight.

3. A DOB fast-adhesive and long-adhesive polymer two-component waterproof coating as claimed in claim 1, characterized in that: The curing agent is mainly composed of aluminum salt and does not contain chloride ions.

4. A method for preparing a DOB fast-adhesive and long-adhesive polymer two-component waterproof coating, characterized in that: The preparation method is applied to the DOB fast-adhesive and long-adhesive polymer two-component waterproof coating as described in any one of claims 1 to 3, and specifically comprises the following steps: Step 1: Preparation of component A: Prepare modified asphalt, petroleum resin and polymer rubber according to demand to prepare component A; Step 2, preparation of component B: selecting aluminum salt and fully mixing it with other ingredients to prepare component B; Step 3: Application: Spray component A and component B through a spray gun with two nozzles to form the required waterproof coating layer.

5. The method for preparing a DOB fast-adhesion and long-adhesion polymer two-component waterproof coating as claimed in claim 4, characterized in that: The preparation of component A specifically comprises the following steps: Step S1, compounding modified asphalt: modifying the asphalt and compounding it with petroleum resin to improve its performance; Step S2, emulsification: the modified asphalt is emulsified by an emulsifier to generate an emulsion; Step S3, compounding polymer rubber: mixing the modified asphalt emulsion with the polymer rubber, stirring them evenly to ensure that the materials are well dispersed, and forming component A with excellent bonding and waterproof properties; Step S4, cooling and packaging: final packaging is performed after cooling treatment to ensure safety and stability during transportation and storage.

6. The method for preparing a DOB fast-adhesion and long-adhesion polymer two-component waterproof coating according to claim 4, characterized in that: The preparation of component B specifically comprises the following steps: Step V1, powder mixing: select aluminum salt and other ingredients and mix them thoroughly to ensure their uniformity; Step V2, measuring and packaging: measuring and packaging is performed to ensure the correct ratio when used.

7. The method for preparing a DOB fast-adhesion and long-adhesion polymer two-component waterproof coating as claimed in claim 5, characterized in that: The application specifically comprises the following steps: Step N1, preparation: First clean the construction surface to ensure that there is no dust, oil and other pollutants to ensure the adhesion of the coating and ensure that component A (liquid polymer) and component B (curing agent) are evenly mixed; Step N2, spraying: spraying component A and component B through a spray gun with two nozzles, and nozzle 1 (component A) and nozzle 2 (component B) are started at the same time; Step N3, mixing and reaction: Component A and component B collide and mix, and begin to condense on the construction surface. After condensation is completed, salting out begins to precipitate water; Step N4, molding: The coating will begin to gradually solidify to form a dense waterproof film. As the curing progresses, the coating will eventually form a stable, waterproof film with good elasticity and tensile strength, which can effectively resist the penetration of water.

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