Modified asphalt coating material with penetration plugging function and preparation method and application thereof

Abstract

The present application relates to a kind of modified asphalt coating material with penetration plugging function, the raw material of preparation described modified asphalt coating material is composed of sulfonated asphalt, rock asphalt, modifier, porous ceramic particles, the heat resistance of the modified asphalt coating material is 90-105 ℃, 2h no flow dripping, low temperature flexibility is minus 30- minus 25 ℃, 2h no crack.The modified asphalt coating material with penetration plugging function of the present application also has water solubility and oil solubility, and can also make modified asphalt coating material meet the performance required by waterproofing membrane, such as high and low temperature resistance.The waterproofing membrane prepared by the coating material of the present application can timely plug and repair when water channeling and leakage occurs due to cracks or external damage of concrete base, and terminate water channeling and leakage.It can also be used as a buffer layer to continue to absorb structural stress and avoid the generation of new cracks.The preparation method of the coating material of the present application is simple and does not require complex chemical reactions, and is more suitable for promotion.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of waterproofing membranes, in particular to a modified asphalt coating material with permeation and plugging functions, and a preparation method and application thereof. BACKGROUND

[0002] Waterproofing materials with permeation to cement concrete structures are basically represented by cement-based permeable crystalline waterproofing coatings, and cement-based permeable crystalline waterproofing materials belong to rigid materials. When the permeable crystalline material seals the pores of the structure layer, it is difficult to release the stress of the structure layer, which can easily cause new cracks in the structure layer in the later application. The waterproofing materials represented by polypropylene, polyurethane and ordinary modified asphalt membranes can only protect the surface of the structure layer and cannot repair the pores and cracks of the structure layer.

[0003] CN 106947273 B discloses a rubber asphalt-based material for concrete structure expansion joints, which comprises, by mass percentage: asphalt 35-45%, softening oil 20-30%, modifier 10-20%, polyolefin elastomer 0-5%, plasticizer 0-6%, tackifying resin 5-15%, viscosity regulator 0-3%, interface agent 0-5%, and special asphalt additive 0-3%. Although this asphalt material has good self-healing, corrosion resistance and fatigue resistance, it cannot act as a sealing material to fill the cracks in the base layer when cracks occur in the base surface, and cannot fundamentally solve the impact of long-term cracks in the base layer. Moreover, only low-temperature resistance performance is disclosed, and it is unknown whether the asphalt material can meet the high-temperature resistance performance.

[0004] CN 110863518 B discloses a kind of aging-resistant asphalt-based pre-laid waterproofing membrane, which comprises, from top to bottom: heat-resistant material anti-sticking layer, modified asphalt self-adhesive layer, base layer, modified asphalt self-adhesive layer, polyethylene film layer, and the thickness of the membrane is 4.0 mm;The modified asphalt self-adhesive material comprises the following components calculated by mass percentage: mixed asphalt 58%~62%, oil-extended SBS 2%~4%, thermoplastic rubber SAM 2%~3%, solution-polymerized styrene-butadiene rubber 2%~3%, tackifying resin 1%~2%, anti-aging additive 2%~3%, rubber powder 9%~12%, and filler 18%~22%. It is disclosed that solution-polymerized styrene-butadiene rubber is used as a modifier of asphalt, which can only effectively alleviate the aging of the modified asphalt self-adhesive layer caused by the external environment during the exposure period before the pouring of the membrane and the pouring of the concrete, and cannot achieve the plugging function when the base layer is aging and cracking.

[0005] Based on the above-mentioned prior art, there is a technical problem in the prior art that the modified asphalt material cannot simultaneously satisfy the permeation and plugging functions for the cracked base layer, and the material itself has high and low temperature resistance performance. SUMMARY

[0006] To solve the above-mentioned technical problems, the present application develops a new modified asphalt coating process, and provides a modified asphalt coating material with a penetration plugging function, the raw materials for preparing the modified asphalt coating material are composed of sulfonated asphalt, rock asphalt, a modifier, and porous ceramic particles, the heat resistance of the modified asphalt coating material is 90-105 DEG C, no dripping for 2h, the low-temperature flexibility is minus 30-25 DEG C, and no cracks for 2h.

[0007] Further, the mass ratio of the sulfonated asphalt in the coating material is 50-70 parts, the mass ratio of the rock asphalt in the coating material is 10-15 parts, the mass ratio of the modifier in the coating material is 1-4 parts, and the mass ratio of the porous ceramic particles in the coating material is 30-40 parts.

[0008] Further, the mass content of water-soluble substances in the sulfonated asphalt is ≥70%, the mass content of oil-soluble substances in the sulfonated asphalt is ≥20%, and the mass content of asphalt in the sulfonated asphalt is ≥40%.

[0009] Further, the mass content of asphalt in the rock asphalt is ≥20%.

[0010] Further, the modifier is self-adhesive rubber asphalt, which is used to solve the viscosity problem of the modified asphalt coating material and the compatibility problem of the sulfonated asphalt.

[0011] Further, the self-adhesive rubber asphalt is selected from self-adhesive rubber asphalt with a brand of SAM1901 produced by Balin Petrochemical.

[0012] Further, the outer diameter of the porous ceramic particles is ≤0.08mm, and the inner pore diameter is ≤0.01mm.

[0013] The present application also provides a preparation method of the modified asphalt coating material with the penetration plugging function, and the specific steps are as follows:

[0014] (1) adding sulfonated asphalt and rock asphalt, heating to 160-170 DEG C, and stirring until melting to obtain a mixture A;

[0015] (2) adding a modifier to the mixture A in step (1), stirring until the modifier is completely dissolved, and fully mixing to obtain a mixture B;

[0016] (3) adding porous ceramic particles to the mixture B in step (2) to fully immerse the mixture B in the porous ceramic particles to obtain a mixture C;

[0017] (4) continuing to control the temperature of the mixture C in step (3) to 160-170 DEG C, and stirring for 100-120 min to obtain the modified asphalt coating material with the penetration plugging function.

[0018] The application also provides an application of the modified asphalt coating material with the penetration plugging function.

[0019] Further, the waterproof roll material sequentially comprises an upper surface isolation layer, an upper surface modified asphalt layer, an intermediate reinforcing layer, a lower surface modified asphalt layer, and a lower surface isolation layer from top to bottom.

[0020] Further, the material of the upper surface isolation layer is one of a release film or a non-release film, or the material of the lower surface isolation layer is one of a release film or a non-release film.

[0021] Further, the material of the upper surface modified asphalt layer is one of a self-adhesive modified asphalt or a hot-melt modified asphalt.

[0022] Further, the material of the intermediate reinforcing layer is one of a polyester cloth, a glass fiber cloth, a polyethylene film, or a polypropylene film or a composite of two or more thereof.

[0023] Further, the lower surface modified asphalt layer is divided into a main part and an overlapping edge part.

[0024] Further, the material of the main part is the modified asphalt coating material with the penetration plugging function.

[0025] Further, the material of the overlapping edge part is one of a self-adhesive modified asphalt or a hot-melt modified asphalt, and the width of the overlapping edge part is 10-15 cm.

[0026] The application has the following beneficial effects:

[0027] 1. The application develops a new modified asphalt coating material process, and provides a modified asphalt coating material with the penetration plugging function, which also has water solubility and oil solubility, and can meet the requirements of the waterproof roll material in high and low temperature resistance and other properties, has a heat resistance of 90-105℃, no dripping for 2 hours, a low temperature flexibility of minus 30-25℃, and no cracks for 2 hours.

[0028] 2. The waterproof roll material prepared by using the modified asphalt coating material with the penetration plugging function is different from the rigid material of the cement-based penetration and crystallization waterproof roll material, the modified asphalt coating material in the waterproof roll material has flexibility and the penetration plugging function of the cement-based penetration and crystallization waterproof material, and will not affect the stress release of the concrete structure, that is, the waterproof roll material prepared by using the modified asphalt coating material with the penetration plugging function can timely plug and repair the water channeling and leakage caused by cracks or external damage of the concrete base, and terminate the water channeling and leakage. The waterproof roll material can also be used as a buffer layer to continue to absorb the structural stress and avoid the generation of new cracks.

[0029] 3、The modified asphalt coating material with the penetration plugging function provided by the application has a simple preparation method, does not need complex chemical reactions, and is more suitable for promotion.

[0030] 4、The waterproof coiled material provided by the application guarantees the lap reliability of the waterproof coiled material and does not conflict with the penetration plugging function thereof, and simultaneously has the advantages of repairing, plugging, waterproofing and isolating waterproofing of a concrete structure. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 The waterproof coiled material with the penetration plugging function provided by the application has a simple preparation method, does not need complex chemical reactions, and is more suitable for promotion.

[0032] The label names in the figure are as follows:

[0033] 1, upper surface isolation layer; 2, upper surface modified asphalt layer; 3, middle reinforcing layer; 4, lower surface modified asphalt layer; 401, main part; 402, lap edge part; 5, lower surface isolation layer. DETAILED DESCRIPTION

[0034] Examples 1-2 and Comparative Example 1 of the application are a comparison between the modified asphalt coating material of the application and a common commercially available coating material, and Example 3 is a waterproof coiled material prepared from the modified asphalt coating material of the application.

[0035] Example 1 Sample One

[0036] The embodiment provides a modified asphalt coating material with a penetration plugging function, and raw materials for preparing the modified asphalt coating material are composed of sulfonated asphalt, rock asphalt, a modifier and porous ceramic particles. The modified asphalt coating material with the penetration plugging function prepared in the embodiment has no dripping and flowing under the condition of heating at 90 DEG C for 2 hours, and has no cracks under the condition of freezing at -25 DEG C for 2 hours, that is, the heat resistance is 90 DEG C, 2 hours without dripping and flowing, and the low-temperature flexibility is -25 DEG C, 2 hours without cracks.

[0037] The mass ratio of the sulfonated asphalt to the coating material is 52.5 parts, the mass ratio of the rock asphalt to the coating material is 11 parts, the mass ratio of the modifier to the coating material is 2 parts, and the mass ratio of the porous ceramic particles to the coating material is 34.5 parts.

[0038] The mass content of water-soluble substances in the sulfonated asphalt is 84%, the mass content of oil-soluble substances in the sulfonated asphalt is 28%, and part of the substances have both water solubility and oil solubility, and the mass content of asphalt in the sulfonated asphalt is 54%.

[0039] The mass content of asphalt in the rock asphalt is 23.5%.

[0040] The modifier is a self-adhesive rubber asphalt selected from a self-adhesive rubber asphalt with a brand of SAM1901 produced by Balin Petrochemical, which is used to solve the viscosity problem of the modified asphalt coating and the compatibility problem of the sulfonated asphalt

[0041] The porous ceramic particles have an outer diameter of 0.05 mm and an inner pore diameter of 0.008 mm.

[0042] The preparation method of the modified asphalt coating with the penetration plugging function in the embodiment is specifically as follows:

[0043] (1) Add sulfonated asphalt and rock asphalt into a stirring tank, heat to 166℃, and stir for 30 min until the asphalt is completely melted to obtain a mixture A;

[0044] (2) Add a modifier, i.e., a self-adhesive rubber asphalt with a brand of SAM1901 produced by Balin Petrochemical, into the mixture A of step (1), stir for 60 min until the modifier is completely dissolved in the asphalt, and then filter to check that the SAM1901 self-adhesive rubber asphalt has been fully mixed to obtain a mixture B;

[0045] (3) Add porous ceramic particles into the mixture B of step (2), and observe the internal complete infiltration of the porous ceramic particles after physical crushing and infiltration under a microscope. After stirring for 60 min, the mixture B is fully infiltrated into the porous ceramic particles to obtain a mixture C;

[0046] (4) Continue to control the temperature of the mixture C in step (3) at 170℃ and stir for 120 min to obtain a sample one of the modified asphalt coating with the penetration plugging function in the embodiment.

[0047] Sample two of Example 2

[0048] The embodiment provides a modified asphalt coating with a penetration plugging function, and raw materials for preparing the modified asphalt coating include sulfonated asphalt, rock asphalt, a modifier, and porous ceramic particles. The modified asphalt coating with the penetration plugging function prepared in the embodiment has no flow and dripping at 100℃ for 2 h, and no cracks at-30℃ for 2 h, i.e., the heat resistance is 100℃ for 2 h without flow and dripping, and the low-temperature flexibility is-30℃ for 2 h without cracks.

[0049] The sulfonated asphalt accounts for 56.5 parts by mass of the coating, the rock asphalt accounts for 10 parts by mass of the coating, the modifier accounts for 3 parts by mass of the coating, and the porous ceramic particles account for 30.5 parts by mass of the coating.

[0050] The content of water-soluble substances in the sulfonated asphalt is 78% by mass, the content of oil-soluble substances in the sulfonated asphalt is 25% by mass, part of the substances have both water-solubility and oil-solubility, and the content of asphalt in the sulfonated asphalt is 49% by mass.

[0051] The content of asphalt in the rock asphalt is 25% by mass.

[0052] The modifier is self-adhesive rubber asphalt, and the self-adhesive rubber asphalt is selected from self-adhesive rubber asphalt with a brand of SAM1901 produced by Balin Petrochemical, which is used to solve the viscosity problem of the modified asphalt coating and the compatibility problem of the sulfonated asphalt

[0053] The outer diameter of the porous ceramic particles is 0.05 mm, and the inner pore diameter is 0.008 mm.

[0054] The preparation method of the modified asphalt coating with the penetration plugging function in the embodiment is specifically as follows:

[0055] (1) Add the sulfonated asphalt and the rock asphalt into a stirring tank, heat to 169℃, and stir for 35 min until the asphalt is completely melted to obtain a mixture A;

[0056] (2) Add the modifier, i.e., the self-adhesive rubber asphalt with a brand of SAM1901 produced by Balin Petrochemical, into the mixture A in step (1), stir for 80 min until the modifier is completely dissolved in the asphalt, check the SAM1901 self-adhesive rubber asphalt by filtration to confirm that the SAM1901 self-adhesive rubber asphalt is fully mixed, and obtain a mixture B;

[0057] (3) Add the porous ceramic particles into the mixture B in step (2), and observe the internal complete infiltration of the porous ceramic particles by a microscope after physical crushing and infiltration, i.e., after stirring for 60 min, the mixture B is fully infiltrated in the porous ceramic particles to obtain a mixture C;

[0058] (4) Continue to control the temperature of the mixture C in step (3) at 165℃, and stir for 110 min to obtain the sample two of the modified asphalt coating with the penetration plugging function in the embodiment.

[0059] Example 3

[0060] The application of the modified asphalt coating with the penetration plugging function in the embodiment is the application of the modified asphalt coating in the preparation of a waterproof roll material.

[0061] As shown in Figure 1 The waterproof roll material comprises, from top to bottom, an upper surface isolation layer 1, an upper surface modified asphalt layer 2, an intermediate reinforcing layer 3, a lower surface modified asphalt layer 4, and a lower surface isolation layer 5.

[0062] The material of the upper surface isolation layer 1 is one of non-release films, and a 0.01 mm polyethylene non-release film is used for isolation.

[0063] The material of the lower surface isolation layer 5 is one of non-release films, and a 0.01 mm polyethylene non-release film is used for isolation.

[0064] The material of the upper surface modified asphalt layer 2 is hot melt modified asphalt, and the thickness is 1 mm.

[0065] The material of the middle reinforcing layer 3 is a composite of polyester cloth and glass fiber cloth, and the grammage is 300 g / m 2 .

[0066] The lower surface modified asphalt layer 4 is divided into a main part 401 and an overlapping edge part 402.

[0067] The material of the main part 401 is the modified asphalt coating material with the penetration plugging function in Example 1, and the thickness is 1 mm.

[0068] The material of the overlapping edge part 402 is hot melt modified asphalt, and the width of the overlapping edge part 402 is 10 cm.

[0069] The waterproofing membrane is manufactured by the prior art.

[0070] The waterproofing membrane with the modified asphalt coating material with the penetration plugging function in the example is melted by a hot melt construction process, and the lower surface isolation layer 5 is melted to complete the bonding of the waterproofing membrane and the concrete base and the overlapping construction of the adjacent waterproofing membranes. The upper surface modified asphalt layer 2 and the overlapping edge part 402 of the waterproofing membrane after construction can play a waterproofing / drainage function; the lower surface modified asphalt layer 4 with the penetration plugging function is closely attached to the concrete base, and when the concrete base has cracks or water seepage caused by external damage, the modified asphalt coating material in the lower surface modified asphalt layer 4 with the penetration plugging function is compatible with water and enters the cracks or pores of the concrete base to plug them, thereby completing the repair of the concrete by the waterproofing membrane with the penetration plugging function and stopping the water seepage. After the modified asphalt coating material with the penetration plugging function seals the cracks and pores, it can continue to absorb structural stress and prevent new cracks.

[0071] Comparative Example 1 Sample Three

[0072] The sample three of the comparative example is a common modified asphalt coating material provided by Yueyang Dongfang Yuhong Waterproof Technology Co., Ltd., which does not flow and drip at 90℃ for 2 h and does not have cracks at -20℃ for 2 h, i.e., the heat resistance is 90℃ for 2 h without flow and dripping, and the low temperature flexibility is -20℃ for 2 h without cracks.

[0073] Take 100g of the modified asphalt coating material with penetration plugging function in Example 1 (sample one), Example 2 (sample two) and Comparative Example 1 (sample three) respectively, and prepare a coating film with a thickness of 1mm by using a sample preparation tool. Weigh the three samples, then flush the coating film with water at a pressure of 0.05Mpa for 30min, dry and weigh again. Calculate the mass loss of the coating material of the three samples to verify the water solubility of the coating material. The test results are shown in Table 1:

[0074] Table 1

[0075] Sample Mass loss / % Example 1 (Sample One) 1.73 Example 2 (Sample Two) 2.23 Comparative Example 1 (Sample Three) 0.02

[0076] The test results show that the modified asphalt coating material with penetration plugging function in Example 1 and Example 2 has water solubility and can meet the penetration function of the structural layer in the actual application process.

[0077] In summary, the modified asphalt coating material with penetration plugging function of the present application has better water solubility than the ordinary commercially available coating material, and can meet the penetration function of the structural layer in the actual application process. Moreover, the waterproofing membrane prepared by using the modified asphalt coating material with penetration plugging function of the present application can timely plug and repair the water channeling and leakage caused by cracks or external damage of the concrete base, and terminate the water channeling and leakage. The modified asphalt coating material with penetration plugging function of the present application can also be used as a buffer layer to continue to absorb structural stress and avoid the generation of new cracks.

[0078] It should be understood that the present application is not limited to the content and structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A modified bitumen coating material having a permeation plugging function, characterized by, The raw material for preparing the modified asphalt coating material is composed of sulfonated asphalt, rock asphalt, modifier, porous ceramic particles, the heat resistance of the modified asphalt coating material is 90-105 DEG C, no dripping for 2h, the low temperature flexibility is minus 30- minus 25 DEG C, no cracks for 2h; The sulfonated asphalt accounts for 50-70 parts by mass of the coating material, the rock asphalt accounts for 10-15 parts by mass of the coating material, the modifier accounts for 1-4 parts by mass of the coating material, and the porous ceramic particles account for 30-40 parts by mass of the coating material; The water-soluble matter in the sulfonated asphalt accounts for ≥70% of the mass content of the sulfonated asphalt, the oil-soluble matter accounts for ≥20% of the mass content of the sulfonated asphalt, and the asphalt accounts for ≥40% of the mass content of the sulfonated asphalt; The asphalt in the rock asphalt accounts for ≥20% of the mass content of the rock asphalt; The modifier is self-adhesive rubber asphalt, which is used to solve the viscosity problem of the modified asphalt coating material and the compatibility problem of the sulfonated asphalt; The porous ceramic particles have an outer diameter ≤0.08mm and an internal pore diameter ≤0.01mm.

2. The modified bitumen coating of claim 1, wherein, The self-adhesive rubber asphalt is selected from the self-adhesive rubber asphalt with the SAM1901 brand produced by Balin Petrochemical.

3. A method for preparing the modified bitumen coating material with the penetration plugging function according to any one of claims 1-2, characterized in that, The specific steps are as follows: (1) add the sulfonated asphalt and the rock asphalt, heat to 160-170 DEG C, and stir until melted to obtain a mixture A; (2) add the modifier to the mixture A of step (1), stir until the modifier is completely dissolved, and mix thoroughly to obtain a mixture B; (3) add the porous ceramic particles to the mixture B of step (2) to make the mixture B fully infiltrate into the porous ceramic particles to obtain a mixture C; (4) continue to control the temperature of the mixture C in step (3) at 160-170 DEG C, and stir for 100-120 min to obtain the modified asphalt coating material with the permeation and plugging functions.

4. Use of the modified bituminous coating material with the penetration plugging function according to any one of claims 1-2, characterized in that, The modified asphalt coating material is used for preparing a waterproof roll material.

5. Use of a modified bitumen coating material according to claim 4, characterized in that The waterproof roll material has, from top to bottom, an upper surface isolation layer, an upper surface modified asphalt layer, an intermediate reinforcing layer, a lower surface modified asphalt layer, and a lower surface isolation layer; The lower surface modified asphalt layer is divided into a main part and an overlapping edge part, the material of the main part is the modified asphalt coating material with the permeation and plugging functions, and the material of the overlapping edge part is one of self-adhesive modified asphalt and hot-melt modified asphalt, and the width of the overlapping edge part is 10-15 cm.

6. Use of a modified bituminous coating material according to claim 5, characterised in that The material of the upper surface isolation layer is one of a release film and a non-release film, or the material of the lower surface isolation layer is one of a release film and a non-release film, or the material of the upper surface modified asphalt layer is one of self-adhesive modified asphalt and hot-melt modified asphalt, or the material of the intermediate reinforcing layer is one or a combination of polyester cloth, glass fiber cloth, polyethylene film, and polypropylene film.

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