High-viscosity wet skid-resistant rubber-asphalt waterproof coating and its preparation method

Abstract

The present invention relates to the technical field of waterproof coating, and provides a rubber asphalt waterproof coating with high viscosity wet skid resistance, comprising 50-70 parts modified asphalt, 20-30 parts styrene butadiene rubber latex, 1-2 parts thickener, 0.1-0.5 parts defoamer, 1-5 parts inorganic filler, 0.1-0.5 parts dispersion medium and 0.1-0.2 parts aging resistance agent, characterized in that the modified asphalt is styrene butadiene rubber modified asphalt, which solves the problem in related technologies that the modified asphalt waterproof coil material has poor adhesion to the basement vertical wall or sloped roof during construction, causing slippage.

Description

[Technical Field]

[0001] The present invention relates to the technical field of waterproof coating, and particularly to a rubber-asphalt waterproof coating with high viscosity and skid resistance and a method for preparing the same. [Background technology]

[0002] Among the waterproofing materials frequently used in architectural waterproofing processes, modified asphalt waterproof coil material accounts for the largest proportion and is widely used for above-ground and underground buildings and other special architectural structures. However, existing modified asphalt waterproof coil material on the market has problems such as poor adhesion to basement vertical walls and sloped roofs during construction, causing slippage. Therefore, there is an urgent need to combine new high-viscosity, skid-resistant water-based rubber asphalt waterproofing paint with waterproof coil material to improve the adhesive strength and anti-slip ability of modified asphalt waterproof coil material and basement vertical walls and sloped roofs. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention provides a rubber asphalt waterproof coating with high viscosity and skid resistance and a preparation method thereof, and solves the problem in related technologies that modified asphalt waterproof coil material has poor adhesion to basement upright walls and sloped roofs during construction, causing slippage. [Means for solving the problem]

[0004] The technical solution of the present invention is as follows:

[0005] The present invention provides It contains 50-70 parts of modified asphalt, 20-30 parts of styrene butadiene rubber latex, 1-2 parts of thickener, 0.1-0.5 parts of defoamer, 1-5 parts of inorganic filler, 0.1-0.5 parts of dispersion medium and 0.1-0.2 parts of anti-aging agent, The modified asphalt is a styrene butadiene rubber modified asphalt. High viscosity wet skid resistant rubber asphalt waterproof coating to provide.

[0006] As a further technical solution, in the modified asphalt, the mass ratio of asphalt to styrene-butadiene rubber is 100:(6-8).

[0007] In another technical solution, the styrene-butadiene rubber is a mixture of a first styrene-butadiene rubber and a second styrene-butadiene rubber in a mass ratio of 1:(2-3), the first styrene-butadiene rubber having a weight average molecular weight of 2500-4500, and the second styrene-butadiene rubber having a weight average molecular weight of 150,000-200,000.

[0008] Another technical solution is to mix asphalt and arene oil and heat to 150°C, add first styrene-butadiene rubber to the mixture, stir for 30 minutes, and heat to 170°C, add second styrene-butadiene rubber to the mixture, further heat to 190°C and stir for 1.5 hours, shear the mixture at a speed of 8000 rpm for 1 hour, and then stir the mixture for 30 minutes to obtain modified asphalt.

[0009] In a further technical alternative, the asphalt is No. 70 asphalt or No. 90 asphalt.

[0010] In a further technical solution, the inorganic filler is one or more of talcum powder, wollastonite, calcium carbonate, kaolin.

[0011] In a further technical solution, the thickener is a mixture of cellulose ether and polyacrylamide in a mass ratio of 1 to 1.5:1.

[0012] In a further technical solution, the dispersion medium is sodium oleate or sodium sulfonate, and the anti-aging agent is antioxidant 4020 or antioxidant RD.

[0013] The present invention provides Step S1: Mixing styrene butadiene rubber latex, inorganic filler, dispersion medium, and antifoaming agent for 0.2-0.5 hours to obtain a premixed material; Step S2: Mix the pre-mixed material and the modified asphalt and grind it for 1-1.5 hours to obtain a mixed material; Step S3: Adding thickener and anti-aging agent to the mixed material and mixing them evenly to obtain a high viscosity wet skid resistant rubber waterproof coating. A method for preparing the high viscosity wet skid-resistant rubber asphalt waterproof coating, characterized in that Also provided.

[0014] The present invention provides The high viscosity wet skid resistant rubber asphalt waterproof coating is also applied to basement upright walls and sloped roofs. [Effects of the Invention]

[0015] The operating principle and beneficial effects of the present invention are as follows.

[0016] The present invention uses styrene-butadiene rubber to modify asphalt, and the styrene-butadiene rubber is composed of a mixture of primary styrene-butadiene rubber and secondary styrene-butadiene rubber in a mass ratio of 1:(2-3). The resulting modified asphalt can then be further mixed with styrene-butadiene rubber latex, thickeners, and other additives to obtain a water-based rubber-asphalt waterproof coating. This significantly improves the adhesion and slip resistance of the water-based rubber-asphalt waterproof coating, resulting in a highly viscous, skid-resistant water-based rubber-asphalt waterproof coating. This solves the problem in related technologies of poor adhesion of modified asphalt waterproof coil material to basement upright walls and sloped roofs during construction, causing slippage. [Brief explanation of the drawings]

[0017] [Figure 1]FIG. 1 is a test chart of the skid resistance after the water-based rubber asphalt waterproof coating in Example 1 of the present invention is adhered to the self-adhesive coil material. [Figure 2] FIG. 2 is a front view of the water-based rubber asphalt waterproof coating in Example 1 of the present invention adhered to the self-adhesive coil material and subjected to a skid resistance test under a load of 100 kg. [Figure 3] FIG. 3 is a left view of the water-based rubber asphalt waterproof coating in Example 1 of the present invention adhered to a self-adhesive coil material and subjected to a skid resistance test under a load of 100 kg. DETAILED DESCRIPTION OF THE INVENTION

[0018] In combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without original work are all within the scope of protection of the present invention.

[0019] In the following examples and comparative examples, the primary styrene-butadiene rubber has a weight average molecular weight of 2500-4500, model number HTBS, I, and is purchased from Shandong Zhuoqilong Chemical Engineering Co., Ltd. The secondary styrene-butadiene rubber has a weight average molecular weight of 176000, model number ESBR1739E, and is purchased from China Petroleum Lanzhou Petrochemical Co., Ltd. The defoamer is BASF A10. [Example]

[0020] Example 1 A high-viscosity wet skid-resistant rubber asphalt waterproof coating contains 50 parts modified asphalt, 20 parts styrene butadiene rubber latex, 1 part thickener, 0.1 part defoamer, 1 part talcum powder, 0.1 part sodium oleate, and 0.1 part antioxidant 4020.

[0021] In this method, No. 70 asphalt and arene oil are mixed and heated to 150°C. Primary styrene-butadiene rubber is added to the resulting mixture, which is then stirred for 30 minutes and heated to 170°C. Secondary styrene-butadiene rubber is added to the resulting mixture, which is then heated to 190°C and stirred for 1.5 hours. The resulting mixture is sheared at 8000 rpm for 1 hour, and then stirred for 30 minutes to obtain a modified asphalt. The mass ratio of asphalt to aromatic oil to primary styrene-butadiene rubber to secondary styrene-butadiene rubber is 100:15:2:4. The thickener is a mixture of cellulose ether and polyacrylamide in a 1:1 mass ratio.

[0022] The method for preparing the high viscosity wet skid resistant rubber asphalt waterproof coating comprises: Step S1: Styrene butadiene rubber latex, talcum powder, sodium oleate, and antifoaming agent are added to a mixing tank, and the mixing tank is started to stir, and the resulting mixture is dispersed for 20 minutes, and the stirring speed is set to 400 rpm, to obtain a pre-mixed material; Step S2: mixing the pre-mixed material and the modified asphalt and then grinding it for 1 hour to obtain a mixed material; Step S3: Add thickener and anti-aging agent 4020 to the mixed material, disperse the obtained mixture for 40 minutes, and set the stirring speed to 800 rpm to obtain high viscosity wet skid resistant rubber waterproof paint; Includes. [Example]

[0023] Example 2 A high viscosity wet skid-resistant rubber asphalt waterproof coating contains 60 parts modified asphalt, 25 parts styrene butadiene rubber latex, 1.5 parts thickener, 0.3 parts defoamer, 3 parts talcum powder, 0.3 parts sodium sulfonate, and 0.15 parts antioxidant RD.

[0024] In this method, No. 70 asphalt and arene oil are mixed and heated to 150°C. Primary styrene-butadiene rubber is added to the resulting mixture, which is then stirred for 30 minutes and heated to 170°C. Secondary styrene-butadiene rubber is added to the resulting mixture, which is then heated to 190°C and stirred for 1.5 hours. The resulting mixture is sheared at 8000 rpm for 1 hour, and then stirred for 30 minutes to obtain a modified asphalt. The mass ratio of asphalt to aromatic oil to primary styrene-butadiene rubber to secondary styrene-butadiene rubber is 100:15:2:4. The thickener is a mixture of cellulose ether and polyacrylamide in a 1:1 mass ratio.

[0025] The method for preparing the high viscosity wet skid resistant rubber asphalt waterproof coating comprises: Step S1: Styrene butadiene rubber latex, talcum powder, sodium sulfonate, and antifoaming agent are added to a mixing tank, and the mixing tank is started to stir and disperse the mixture for 20 minutes, with the stirring speed set to 400 rpm, to obtain a pre-mixed material; Step S2: mixing the pre-mixed material and the modified asphalt and then grinding it for 1 hour to obtain a mixed material; Step S3: Add thickener and antioxidant RD to the mixed material, disperse the mixture for 40 minutes, and set the stirring speed to 800 rpm to obtain a high viscosity wet skid-resistant rubber waterproof coating; Includes. [Example]

[0026] Example 3 A high viscosity wet skid-resistant rubber asphalt waterproof coating contains 70 parts modified asphalt, 30 parts styrene butadiene rubber latex, 2 parts thickener, 0.5 parts defoamer, 5 parts wollastonite, 0.5 parts sodium sulfonate, and 0.2 parts antioxidant RD.

[0027] In this method, No. 90 asphalt and arene oil are mixed and heated to 150°C. Primary styrene-butadiene rubber is added to the resulting mixture, which is then stirred for 30 minutes and heated to 170°C. Secondary styrene-butadiene rubber is added to the resulting mixture, which is then heated to 190°C and stirred for 1.5 hours. The resulting mixture is sheared at 8000 rpm for 1 hour, and then stirred for 30 minutes to obtain a modified asphalt. The mass ratio of asphalt to aromatic oil to primary styrene-butadiene rubber to secondary styrene-butadiene rubber is 100:15:2:4. The thickener is a mixture of cellulose ether and polyacrylamide in a 1:1 mass ratio.

[0028] The method for preparing the high viscosity wet skid resistant rubber asphalt waterproof coating comprises: Step S1: Styrene butadiene rubber latex, wollastonite, sodium sulfonate, and antifoaming agent are added to a mixing tank, and the mixing tank is started to stir and disperse the mixture for 20 minutes at a stirring speed of 400 rpm to obtain a pre-mixed material; Step S2: mixing the pre-mixed material and the modified asphalt and then grinding it for 1 hour to obtain a mixed material; Step S3: Add thickener and antioxidant RD to the mixed material, disperse the mixture for 40 minutes, and set the stirring speed to 800 rpm to obtain a high viscosity wet skid-resistant rubber waterproof coating; Includes. [Example]

[0029] Example 4 A high-viscosity wet skid-resistant rubber asphalt waterproof coating contains 50 parts modified asphalt, 20 parts styrene butadiene rubber latex, 1 part thickener, 0.1 part defoamer, 1 part talcum powder, 0.1 part sodium oleate, and 0.1 part antioxidant 4020.

[0030] In this method, No. 70 asphalt and arene oil are mixed and heated to 150°C. Primary styrene-butadiene rubber is added to the resulting mixture, which is then stirred for 30 minutes and heated to 170°C. Secondary styrene-butadiene rubber is added to the resulting mixture, which is then heated to 190°C and stirred for 1.5 hours. The resulting mixture is sheared at 8000 rpm for 1 hour, and then stirred for 30 minutes to obtain a modified asphalt. The mass ratio of asphalt to aromatic oil to primary styrene-butadiene rubber to secondary styrene-butadiene rubber is 100:15:2:6. The thickener is a mixture of cellulose ether and polyacrylamide in a 1:1 mass ratio.

[0031] The preparation method of the high viscosity wet skid resistant rubber asphalt waterproof coating material is the same as that in Example 1. [Example]

[0032] Example 5 A high-viscosity wet skid-resistant rubber asphalt waterproof coating contains 50 parts modified asphalt, 20 parts styrene butadiene rubber latex, 1 part thickener, 0.1 part defoamer, 1 part talcum powder, 0.1 part sodium oleate, and 0.1 part antioxidant 4020.

[0033] In this method, No. 70 asphalt and arene oil are mixed and heated to 150°C. Primary styrene-butadiene rubber is added to the resulting mixture, which is then stirred for 30 minutes and heated to 170°C. Secondary styrene-butadiene rubber is added to the resulting mixture, which is then heated to 190°C and stirred for 1.5 hours. The resulting mixture is sheared at 8000 rpm for 1 hour, and then stirred for 30 minutes to obtain a modified asphalt. The mass ratio of asphalt to aromatic oil to primary styrene-butadiene rubber to secondary styrene-butadiene rubber is 100:15:3:3. The thickener is a mixture of cellulose ether and polyacrylamide in a 1:1 mass ratio.

[0034] The preparation method of the high viscosity wet skid resistant rubber asphalt waterproof coating material is the same as that in Example 1. [Example]

[0035] Example 6 A high-viscosity wet skid-resistant rubber asphalt waterproof coating contains 50 parts modified asphalt, 20 parts styrene butadiene rubber latex, 1 part thickener, 0.1 part defoamer, 1 part talcum powder, 0.1 part sodium oleate, and 0.1 part antioxidant 4020.

[0036] In this method, No. 70 asphalt and arene oil are mixed and heated to 150°C. Primary styrene-butadiene rubber is added to the resulting mixture, which is then stirred for 30 minutes and heated to 170°C. Secondary styrene-butadiene rubber is added to the resulting mixture, which is then heated to 190°C and stirred for 1.5 hours. The resulting mixture is sheared at 8000 rpm for 1 hour, and then stirred for 30 minutes to obtain a modified asphalt. The mass ratio of asphalt to aromatic oil to primary styrene-butadiene rubber to secondary styrene-butadiene rubber is 100:15:1.2:4.8. The thickener is a mixture of cellulose ether and polyacrylamide in a 1:1 mass ratio.

[0037] The preparation method of the high viscosity wet skid resistant rubber asphalt waterproof coating material is the same as that in Example 1. [Example]

[0038] Example 7 A high-viscosity wet skid-resistant rubber asphalt waterproof coating contains 50 parts modified asphalt, 20 parts styrene butadiene rubber latex, 1 part thickener, 0.1 part defoamer, 1 part talcum powder, 0.1 part sodium oleate, and 0.1 part antioxidant 4020.

[0039] In this method, No. 70 asphalt and arene oil are mixed and heated to 150°C. Primary styrene-butadiene rubber is added to the resulting mixture, which is then stirred for 30 minutes and heated to 170°C. Secondary styrene-butadiene rubber is added to the resulting mixture, which is then heated to 190°C and stirred for 1.5 hours. The resulting mixture is sheared at 8000 rpm for 1 hour, and then stirred for 30 minutes to obtain a modified asphalt. The mass ratio of asphalt to aromatic oil to primary styrene-butadiene rubber to secondary styrene-butadiene rubber is 100:15:2:4. The thickener is a mixture of cellulose ether and polyacrylamide in a mass ratio of 1:1.5.

[0040] The preparation method of the high viscosity wet skid resistant rubber asphalt waterproof coating material is the same as that in Example 1.

[0041] Comparison 1 The only difference between this comparative example and Example 1 is as follows: No. 70 asphalt and arene oil are mixed and heated to 150°C, and the resulting mixture is added with primary styrene-butadiene rubber. The mixture is further heated to 190°C and stirred for 1.5 hours. The resulting mixture is sheared at a speed of 8000 rpm for 1 hour, and then stirred for 30 minutes to obtain a modified asphalt. The mass ratio of asphalt, aromatic oil, and primary styrene-butadiene rubber is 100:15:6. Comparative Example 2

[0042] Comparison 2 The only difference between this comparative example and Example 1 is as follows: No. 70 asphalt and arene oil are mixed and heated to 170°C, and the resulting mixture is added with secondary styrene-butadiene rubber. The mixture is further heated to 190°C and stirred for 1.5 hours. The resulting mixture is sheared at a speed of 8000 rpm for 1 hour, and then stirred for 30 minutes to obtain a modified asphalt. The mass ratio of asphalt, aromatic oil, and secondary styrene-butadiene rubber is 100:15:6. Comparative Example 3

[0043] Comparison 3 The only difference between this comparative example and Example 1 is as follows: No. 70 asphalt and arene oil were mixed and heated to 170°C. The first styrene-butadiene rubber and the second styrene-butadiene rubber were added to the resulting mixture, which was then heated to 190°C and stirred for 1.5 hours. The resulting mixture was sheared at 8000 rpm for 1 hour, and then stirred for 30 minutes to obtain a modified asphalt. The mass ratio of asphalt to aromatic oil to first styrene-butadiene rubber to second styrene-butadiene rubber was 100:15:2:4.

[0044] The water-based rubber asphalt waterproof coatings of Examples 1-7 and Comparative Examples 1-2 were subjected to the following performance tests.

[0045] 1. Adhesive strength: The adhesive strength of the sample is measured according to the method specified in GB / T 16777-2008 "Test method for architectural waterproof coatings."

[0046] 2. Peel strength: The peel strength of the sample is measured according to the method specified in JC / T1069-2008 "Primer for asphalt-based waterproof coil material."

[0047] 3. Dripping resistance: The dripping resistance of the test sample is measured according to the method specified in GB / T9264-2012 "Assessment of Dripping Resistance of Color Coatings and Varnishes."

[0048] The test results are shown in the table below.

[0049] Table 1: Performance test results of water-based rubber asphalt waterproofing paint for Examples 1-7 and Comparative Examples 1-2 TIFF0007745933000001.tif109123

[0050] From the data in the above table, it can be seen that the adhesive strength, peel strength, and sagging resistance of the water-based rubber asphalt waterproofing coating of Examples 1-7 are significantly improved when compared with Comparative Examples 1-2, and this is particularly true for the water-based rubber asphalt waterproofing coatings of Examples 1-3 and 7. The present invention uses ethylene butadiene rubber to modify asphalt, while the styrene butadiene rubber is formed from a mixture of primary styrene butadiene rubber and secondary styrene butadiene rubber in a mass ratio of 1:(2-3), which significantly improves the adhesive performance and slip resistance of the water-based rubber asphalt waterproofing coating, allowing for the preparation of a high-viscosity, skid-resistant water-based rubber asphalt waterproofing coating, thereby enhancing the construction performance of the water-based rubber asphalt waterproofing coating for applications such as basement vertical walls and sloped roofs.

[0051] Compared with Example 1, the adhesive strength, peel strength, and sagging resistance of the water-based rubber asphalt waterproofing coating of Comparative Example 3 are all poor. The reason for this is that the primary styrene-butadiene rubber and secondary styrene-butadiene rubber are added to the modified asphalt simultaneously during the preparation of the water-based rubber asphalt waterproofing coating of Comparative Example, which results in the inability to fully utilize the modifying effect of the styrene-butadiene rubber on the asphalt. It can be asserted that by adjusting the preparation method of the modified asphalt, the modifying effect of the styrene-butadiene rubber on the asphalt can be fully utilized, thereby improving the adhesive strength and anti-slip performance of the water-based rubber asphalt waterproofing coating.

[0052] Examples of construction applications: The water-based rubber asphalt waterproofing paint and self-adhesive coil material of Example 1 are used in combination. As shown in Figures 1 and 2, when a 1m wide coil material supports an adult, there is no slippage or sliding down, and when a 1m wide coil material supports a balancing weight of 100kg, there is no slippage within 7 days.

[0053] The water-based rubber asphalt waterproof coating prepared in Example 1 was sent to the National Building Materials Industry Building Cladding and Tubular Products Quality Supervision and Testing Center for commissioned testing, and the test report is shown in the table below.

[0054] Table 2. Detection report for water-based rubber asphalt waterproofing paint in Example 1 TIFF0007745933000002.tif5598TIFF0007745933000003.tif5398

[0055] Report No.: JC2021MJ0536

[0056] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for preparing a high viscosity wet skid resistant rubber asphalt waterproof coating, comprising: The rubber asphalt waterproof coating comprises 50-70 parts of modified asphalt, 20-30 parts of styrene butadiene rubber latex, 1-2 parts of thickener, 0.1-0.5 parts of antifoaming agent, 1-5 parts of inorganic filler, 0.1-0.5 parts of dispersion medium, and 0.1-0.2 parts of anti-aging agent; The modified asphalt is a styrene-butadiene rubber modified asphalt, and in the modified asphalt, the mass ratio of asphalt to styrene-butadiene rubber is 100: (6-8); The styrene-butadiene rubber is a mixture of a first styrene-butadiene rubber and a second styrene-butadiene rubber in a mass ratio of 1:(2-3), the first styrene-butadiene rubber has a weight average molecular weight of 2500-4500 and a model number of HTBS, I type, and the second styrene-butadiene rubber has a weight average molecular weight of 176000 and a model number of ESBR1739E, Asphalt and arene oil are mixed and heated to 150°C, a first styrene-butadiene rubber is added to the resulting mixture, stirred for 30 minutes, and the temperature is raised to 170°C. A second styrene-butadiene rubber is added to the resulting mixture, and the temperature is further raised to 190°C and stirred for 1.5 hours. The resulting mixture is sheared at a speed of 8000 rpm for 1 hour, and then the resulting mixture is stirred for 30 minutes to obtain a modified asphalt. the thickener is a mixture of cellulose ether and polyacrylamide in a mass ratio of 1 to 1.5:1; The preparation method comprises: Step S1: Mixing styrene-butadiene rubber latex, inorganic filler, dispersion medium, and antifoaming agent for 0.2-0.5 hours to obtain a premixed material; Step S2: Mix the pre-mixed material and the modified asphalt and then grind for 1-1.5 hours to obtain a mixed material; Step S3: Add a thickener and an anti-aging agent to the mixed material and mix them evenly to obtain a rubber waterproof coating with high viscosity and skid resistance. A preparation method comprising:

2. 10. The method of claim 1, wherein the asphalt is No. 70 asphalt or No. 90 asphalt.

3. 10. The method of claim 1, wherein the inorganic filler is one or more of talcum powder, wollastonite, calcium carbonate, and kaolin.

4. 10. The method of claim 1, wherein the dispersion medium is sodium oleate or sodium sulfonate.

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