Asphalt waterproofing roll and preparation method thereof

Abstract

The present invention belongs to the technical field of waterproofing coiled materials, and specifically relates to an asphalt waterproofing coiled material and a preparation method thereof. The preparation method is to heat asphalt, then heat a high molecular polymer, stir, shear, cool to a certain temperature, add KH-560, muscovite and nano zinc oxide, stir, coat, and cover with a PE film to obtain an asphalt waterproofing coiled material. The asphalt waterproofing coiled material prepared by the present invention effectively improves the high temperature resistance and mechanical properties of the asphalt coiled material.

Description

Technical Field

[0001] The present invention belongs to the technical field of waterproofing coiled materials, and more specifically, relates to an asphalt waterproofing coiled material and a preparation method thereof. Background Art

[0002] With the rapid development of the economy, the construction industry has achieved remarkable achievements, but there are also many waterproofing problems, which are particularly evident in the rainy southern regions. At present, the most commonly used building waterproof materials are SBS modified asphalt waterproof membranes, which have excellent impermeability, low-temperature flexibility and heat resistance. However, SBS is relatively expensive and easily volatilizes harmful gases during the heating production process. Therefore, another modified material can be added to the traditional SBS modified asphalt to prepare a composite modified asphalt waterproof membrane, which can not only enhance the technical performance of the traditional SBS modified asphalt waterproof membrane, but also reduce production costs and improve the comprehensive performance of the membrane.

[0003] CN112277212A discloses a method for manufacturing a polymer modified asphalt waterproofing coiled material, comprising the following steps: step 1, melting raw materials: heating the polymer modified asphalt until the polymer modified asphalt is melted; step 2, impregnation of tire material: immersing the tire material in the melted polymer modified asphalt, taking it out, scraping and cooling the asphalt material on the surface of the tire material until the asphalt material becomes solid, and obtaining a tire material with asphalt covered on the surface; step 3, trimming both sides of the tire material with asphalt covered on the surface prepared in step 2, and removing the asphalt material on both sides of the tire material; wherein step 3 is completed by using a polymer modified asphalt waterproofing coiled material manufacturing machine. The present invention ensures that the edges of both sides of the waterproofing coiled material are neat after trimming; and avoids the occurrence of waste materials adhering to the surface of the waterproofing coiled material and burrs on the edges of the waterproofing coiled material.

[0004] CN112876872A A modified asphalt waterproofing roll for roads and bridges and a preparation method thereof. The modified asphalt waterproofing roll for roads and bridges comprises a sand layer, an upper surface modified asphalt layer, a tread base layer, a lower surface modified asphalt layer and an isolation layer. The raw materials for preparing the upper surface modified asphalt layer include 60-80 parts of asphalt, 10-20 parts of ethylene butyl acrylate copolymer, 5-15 parts of ethylene vinyl acetate copolymer, 5-15 parts of anhydride modified esterified rosin, 25-35 parts of filler, and 25 parts of silane coupling agent. The modified asphalt waterproofing roll for roads and bridges provided in the present application can improve low-temperature flexibility and shear strength, and can also improve the heat resistance and impermeability of the modified asphalt waterproofing roll for roads and bridges, and has low requirements on construction conditions and good impermeability after hot rolling.

[0005] CN112871594A discloses a method for preparing an asphalt polymer waterproofing roll, which adopts the following waterproofing roll leveling device, which includes two side support plates, a scraping bracket, a scraping mechanism, a stabilizing wheel, a stabilizing connecting frame and a cleaning mechanism; the method for preparing an asphalt polymer waterproofing roll using the above waterproofing roll leveling device includes the following steps: S1, conveying the carcass of the waterproofing roll; S2, scraping the asphalt layer flat; S3, leveling the waterproofing roll; S4, coating the waterproofing roll. The present invention can solve the problems existing in the existing cleaning of excess asphalt on the waterproofing roll: the excess asphalt on the waterproofing roll will move to the middle after being scraped, thereby causing the flatness of the middle part of the waterproofing roll to decrease, the waterproofing roll is easily damaged when the solidified asphalt on the waterproofing roll is scraped, and the cleaning of the solidified asphalt is inconvenient.

[0006] The existing asphalt waterproofing membrane still has poor high temperature resistance and insufficient mechanical properties, so it is urgently needed to further improve the high temperature resistance and mechanical properties. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the defects and shortcomings of the prior art and provide an asphalt waterproofing coiled material and a preparation method thereof. The preparation method is to heat asphalt, then heat a high molecular polymer, stir, shear, cool to a certain temperature, add KH-560, muscovite and nano zinc oxide, stir, coat, and cover with a PE film to obtain an asphalt waterproofing coiled material. The asphalt waterproofing coiled material prepared by the present invention effectively improves the high temperature resistance and mechanical properties of the asphalt coiled material.

[0008] The purpose of the invention is to provide a method for preparing an asphalt waterproofing membrane.

[0009] Another object of the present invention is to provide an asphalt waterproofing membrane.

[0010] The above-mentioned purpose of the present invention is achieved through the following technical solutions:

[0011] A method for preparing a high temperature resistant asphalt waterproofing coiled material comprises the following steps:

[0012] S1. Heat the base asphalt to 120-130°C;

[0013] S2, add SEBS, SIS, PU, ​​SBS and aromatic oil, heat to a certain temperature and stir; then use a high-speed shearing machine to continuously shear;

[0014] S3, cooling to a certain temperature, adding KH-560, muscovite and nano zinc oxide, and stirring;

[0015] S4. Finally, the obtained mixture is evenly coated on the dried long-fiber polyester base and covered with a PE film to form an asphalt waterproof membrane.

[0016] Preferably, by weight: 100 parts of asphalt matrix, 2-6 parts of SEBS, 3-5 parts of SIS; 4-8 parts of PU, 6-10 parts of SBS, 20-30 parts of aromatic oil, 6-12 parts of KH-560; 6-10 parts of muscovite; 5-7 parts of nano zinc oxide.

[0017] Further preferably, the asphalt matrix is ​​90# matrix asphalt.

[0018] In a further preferred embodiment, the particle size of the muscovite is 20 to 60 μm.

[0019] Preferably, the particle size of the muscovite is 40 μm.

[0020] More preferably, the particle size of the muscovite is a combination of 20 μm and 60 μm, and the mass ratio between the 20 μm muscovite and the 60 μm muscovite is 3-1:1.

[0021] Preferably, the particle size of the nano zinc oxide is 100-200 nm.

[0022] Preferably, in step S2, the stirring after heating to a certain temperature is heating to 200-220°C and stirring for 1-2h; the shearing speed of the high-speed shearing machine is 4800-5000r / min, and the shearing time is 2-4h.

[0023] Preferably, in step S3, the certain temperature is 160-180° C., and the stirring time is 1-3 hours.

[0024] A high temperature resistant asphalt waterproofing membrane is prepared based on the above-mentioned method for preparing a high temperature resistant asphalt waterproofing membrane.

[0025] The present invention has the following beneficial effects:

[0026] (1) The present invention improves the compatibility between muscovite and zinc oxide and asphalt by adding KH-560, thereby improving the high temperature resistance and mechanical properties of the waterproof membrane, and further improves the above properties by adding high molecular polymer materials. The waterproof membrane prepared by the present invention has excellent mechanical properties and high temperature resistance. DETAILED DESCRIPTION

[0027] The present invention is further described below with reference to specific examples, but the examples do not limit the present invention in any form. Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in the art.

[0028] Among them, the asphalt matrix is ​​90# matrix asphalt:

[0029] SBS is SBS 4402, SIS is 1105, both are products of Sinopec;

[0030] The styrene content of the SEBS modifier is 20-24wt%;

[0031] PU Xi'an Qinglianhua New Material Technology Co., Ltd.

[0032] Unless otherwise specified, the reagents and materials used in the following examples are commercially available.

[0033] Example 1

[0034] A method for preparing a high temperature resistant asphalt waterproofing membrane comprises the following steps:

[0035] S1. Heat the base asphalt to 125°C;

[0036] S2, add SEBS, SIS, PU, ​​SBS and aromatic oil, and heat to 210 ° C and stir for 1.5 hours; then use a high-speed shearing machine to continuously shear at a shear rate of 4900r / min for 3 hours;

[0037] S3, cool to 170℃, add KH-560, muscovite and nano zinc oxide, and stir for 2h;

[0038] S4. Finally, the obtained mixture is evenly coated on the dried long-fiber polyester base and covered with a PE film to form an asphalt waterproof membrane.

[0039] By weight: 100 parts of asphalt matrix, 4 parts of SEBS, 4 parts of SIS; 6 parts of PU, 8 parts of SBS, 25 parts of aromatic oil, 9 parts of KH-560; 8 parts of muscovite; 6 parts of nano zinc oxide;

[0040] The particle size of the muscovite is 40 μm; the particle size of the nano zinc oxide is 160 nm;

[0041] Example 2

[0042] A method for preparing a high temperature resistant asphalt waterproofing membrane comprises the following steps:

[0043] S1. Heat the base asphalt to 130°C;

[0044] S2, add SEBS, SIS, PU, ​​SBS and aromatic oil, heat to 220℃ and stir for 1h; then use a high-speed shearing machine to continuously shear at a shear rate of 5000r / min for 2h;

[0045] S3, cool to 180℃, add KH-560, muscovite and nano zinc oxide, and stir for 1h;

[0046] S4. Finally, the obtained mixture is evenly coated on the dried long-fiber polyester base and covered with a PE film to form an asphalt waterproof membrane.

[0047] By weight: 100 parts of asphalt matrix, 6 parts of SEBS, 3 parts of SIS; 8 parts of PU, 6 parts of SBS, 30 parts of aromatic oil, 6 parts of KH-560; 10 parts of muscovite; 5 parts of nano zinc oxide;

[0048] The asphalt matrix is ​​90# matrix asphalt:

[0049] The particle size of the muscovite is 60 μm; the particle size of the nano zinc oxide is 200 nm;

[0050] Example 3

[0051] The particle size of the muscovite is a combination of 20 μm and 60 μm, the mass ratio between the 20 μm muscovite and the 60 μm muscovite is 2:1, and the other steps and conditions are exactly the same as those in Example 1.

[0052] Example 4

[0053] By weight: 100 parts of asphalt matrix, 2 parts of SEBS, 5 parts of SIS, 4 parts of PU, 10 parts of SBS, 20 parts of aromatic oil, 12 parts of KH-560, 6 parts of muscovite, and 7 parts of nano zinc oxide. Other steps and conditions are exactly the same as those in Example 1.

[0054] Comparative Example 1

[0055] By weight: 100 parts of asphalt matrix, 8 parts of SEBS, 6 parts of PU, 8 parts of SBS, 25 parts of aromatic oil, 9 parts of KH-560, 8 parts of muscovite, and 6 parts of nano zinc oxide. Other steps and conditions are exactly the same as those in Example 1.

[0056] Comparative Example 2

[0057] By weight: 100 parts of asphalt matrix, 4 parts of SEBS, 10 parts of PU, 8 parts of SBS, 25 parts of aromatic oil, 9 parts of KH-560, 8 parts of muscovite, and 6 parts of nano zinc oxide. Other steps and conditions are exactly the same as those in Example 1.

[0058] Comparative Example 3

[0059] By weight: 100 parts of asphalt matrix, 4 parts of SEBS, 4 parts of SIS, 14 parts of SBS, 25 parts of aromatic oil, 9 parts of KH-560, 8 parts of muscovite, and 6 parts of nano zinc oxide. Other steps and conditions are exactly the same as those in Example 1.

[0060] Comparative Example 4

[0061] By weight: 100 parts of asphalt matrix, 4 parts of SEBS, 4 parts of SIS, 6 parts of PU, 8 parts of SBS, 25 parts of aromatic oil, 9 parts of KH-560, and 14 parts of nano zinc oxide. Other steps and conditions are exactly the same as those in Example 1.

[0062] The heat resistance and peel strength of Examples 1-3 and Comparative Examples 1-4 were measured. The specific test results are shown in Table 1: Wherein: the heat resistance test standard is GB / T 328.11-2007; the peel strength test standard is GB / T 328.20-2007;

[0063] Table 1:

[0064] Heat resistance(℃) Peel strength (N / mm) Example 1 163 2.96 Example 2 161 2.86 Example 3 166 3.06 Example 4 159 2.93 Comparative Example 1 146 2.73 Comparative Example 2 139 2.69 Comparative Example 3 149 2.75 Comparative Example 4 153 2.79

[0065] It can be seen from Table 1 that the asphalt waterproofing membrane prepared by the present invention can significantly improve the heat resistance and mechanical strength of the asphalt waterproofing membrane by adding high molecular polymer materials and inorganic fillers.

[0066] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A method for preparing a high temperature resistant asphalt waterproofing coiled material, characterized in that: The preparation method comprises the following steps: S1. Heat the base asphalt to 120-130°C; S2, add SEBS, SIS, PU, ​​SBS and aromatic oil, heat to a certain temperature and stir; then use a high-speed shearing machine to continuously shear; S3, cooling to a certain temperature, adding KH-560, muscovite and nano zinc oxide, and stirring; S4, finally, the obtained mixture is evenly coated on the dried long-fiber polyester base, and covered with a PE film to obtain an asphalt waterproofing membrane; In parts by weight: 100 parts of matrix asphalt, 2-6 parts of SEBS, 3-5 parts of SIS; 4-8 parts of PU, 6-10 parts of SBS, 20-30 parts of aromatic oil, 6-12 parts of KH-560; 6-10 parts of muscovite; 5-7 parts of nano zinc oxide; the particle size of the muscovite is a combination of 20μm and 60μm, and the mass ratio between the 20μm muscovite and the 60μm muscovite is 3-1:1; in step S2, the stirring after heating to a certain temperature is heating to 200-220℃ and stirring for 1-2h.

2. The method for preparing a high temperature resistant asphalt waterproofing coiled material according to claim 1, characterized in that: The base asphalt is 90# base asphalt.

3. The method for preparing a high temperature resistant asphalt waterproofing coiled material according to claim 1, characterized in that: The particle size of the nano zinc oxide is 100-200 nm.

4. The method for preparing a high temperature resistant asphalt waterproofing coiled material according to claim 1, characterized in that: In step S2, the shearing speed of the high-speed shearing machine is 4800-5000 r / min, and the shearing time is 2-4 h.

5. The method for preparing a high temperature resistant asphalt waterproofing coiled material according to claim 1, characterized in that: In step S3, the certain temperature is 160-180°C, and the stirring time is 1-3 hours.

6. A high temperature resistant asphalt waterproofing membrane prepared according to the method for preparing a high temperature resistant asphalt waterproofing membrane according to any one of claims 1 to 5.