A heat-reflective modified asphalt waterproofing roll material that can be exposed and used and a preparation method thereof

Abstract

The present invention relates to the technical field of waterproofing coiled materials, and proposes a heat-reflective modified asphalt waterproofing coiled material that can be used exposed and a preparation method thereof. The heat-reflective modified asphalt waterproofing coiled material that can be used exposed comprises, arranged in order from top to bottom: a heat-reflective heat-insulating mineral granular material layer (201), a first modified asphalt coating (202), a modified asphalt fully impregnated polyester base layer (203), a second modified asphalt coating (204), and a PE film (205). The above technical solution solves the problem of high surface temperature of the coiled material when it is used exposed in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproofing coiled materials, and in particular to a heat-reflective modified asphalt waterproofing coiled material that can be exposed for use and a preparation method thereof. Background Art

[0002] According to Article 4 of 4.1.2 of GB 50345-2012 Technical Specification for Roof Engineering, a protective layer should be set on the waterproof layer of the roll or coating. 4.7.1 clearly states that the protective layer material of the non-walkable roof can be opaque mineral granules. According to this technical specification, the surface-covered shale-modified asphalt waterproof roll is widely used for exposed use on non-walkable roofs. The shale of this product has a certain covering effect, which can improve the aging resistance of the roll and has a certain flame retardant effect. The color of shale is generally black, gray, green or red. However, there are also certain problems with this product during use. The shale is dark in color and absorbs heat seriously under the sunlight in summer. The surface temperature of the roll can reach more than 70℃. On the one hand, long-term high temperature will cause the indoor temperature to be too high and waste energy. On the other hand, long-term high temperature will reduce the aging resistance of the roll. In addition, high temperature will reduce the cohesion of the modified asphalt coating of the roll, resulting in risks such as sagging and falling off.

[0003] The surface of the mineral aggregate SBS modified asphalt rolls currently used in the market is mostly shale, yellow sand, colored sand, etc., and is exposed during use. When the temperature is high in summer, it absorbs heat severely and the surface temperature of the roll can reach above 60°C. The high surface temperature of the roll will reduce the service life of the roll, and cause risks such as slippage and falling on sloping roofs. At the same time, the high indoor temperature on the top floor causes energy waste. Summary of the invention

[0004] The present invention provides a heat-reflective modified asphalt waterproofing coiled material that can be used exposed and a preparation method thereof, which solves the problem in the related art that the surface temperature of the coiled material is high when used exposed.

[0005] The technical solution of the present invention is as follows:

[0006] A heat-reflective modified asphalt waterproofing coiled material that can be used exposed includes: a heat-reflective heat-insulating mineral granular material layer, a first modified asphalt coating, a modified asphalt fully impregnated polyester base layer, a second modified asphalt coating, and a PE film, which are arranged in sequence from top to bottom.

[0007] As a further technical solution, the heat-reflecting insulating mineral granular layer is made of heat-reflecting insulating mineral granular materials. The preparation method of the heat-reflecting insulating mineral granular materials includes the following steps: drying the microporous calcium silicate particles, mixing them with heat-reflecting coating, and sintering them at 180°C.

[0008] As a further technical solution, the heat reflective coating is used in an amount sufficient to completely immerse the microporous calcium silicate particles.

[0009] As a further technical solution, the microporous calcium silicate particles include: primary microporous calcium silicate with a mesh size of 10 to 15, secondary microporous calcium silicate with a mesh size of 15 to 25, and tertiary microporous calcium silicate with a mesh size of 25 to 30. The ratio of the primary microporous calcium silicate, the secondary microporous calcium silicate and the tertiary microporous calcium silicate is 1:(2 to 8):1.

[0010] As a further technical solution, the heat reflective coating is composed of the following components in parts by weight: 45-55 parts of water-based acrylic emulsion, 5-15 parts of rutile titanium dioxide, 5-15 parts of borate glass beads, 1 part of silane coupling agent, and 15-25 parts of deionized water.

[0011] The silane coupling agent in the present invention is Dow Corning 6040.

[0012] As a further technical solution, the first modified asphalt coating and the second modified asphalt coating are both prepared from modified asphalt, and the preparation method of the modified asphalt comprises the following steps: stirring 90# asphalt and heating it to 180°C, adding SBS and APAO and dispersing for 50 minutes, adding tire rubber powder and stirring for 2 hours, adding talcum powder and dispersing for 30 minutes to obtain modified asphalt.

[0013] The tire rubber powder added in the present invention is 60 mesh tire rubber powder, which can be purchased on the market.

[0014] As a further technical solution, the total thickness of the first modified asphalt coating, the modified asphalt fully impregnated polyester tire base layer and the second modified asphalt coating is 3 to 5 mm.

[0015] As a further technical solution, the mass ratio of the 90# asphalt, SBS, APAO, tire rubber powder and talcum powder is 52:5:3:15:25.

[0016] As a further technical solution, the method for preparing the modified asphalt fully impregnated polyester tire base comprises the following steps: 2 The long-fiber polyester tire base is pre-impregnated in pre-impregnated oil to obtain a modified asphalt fully impregnated polyester tire base.

[0017] As a further technical solution, the preparation method of the pre-impregnation oil is as follows: 90# asphalt, 10# asphalt, and C9 resin are added to a reactor in sequence, the temperature is raised to 180-190°C, and stirred evenly to obtain pre-impregnation oil, wherein the mass ratio of 90# asphalt, 10# asphalt, and C9 resin is 6:3:1.

[0018] The present invention also proposes a method for preparing a heat-reflective modified asphalt waterproofing coiled material that can be used externally, comprising the following steps: dipping a fully-impregnated polyester base layer of the modified asphalt into the modified asphalt, shaping it with a shaping roller, then covering one side with a PE film and the other side with heat-reflective heat-insulating mineral granules, embossing, cooling, and rolling to obtain the waterproofing coiled material.

[0019] The working principle and beneficial effects of the present invention are:

[0020] 1. The present invention adopts mineral particles with heat reflection and heat insulation properties. The mineral particles are sintered by microporous calcium silicate particles with a heat reflection coating wrapped on the outer layer. They have reflection and heat insulation functions. The surface temperature of the coil is 30 to 40°C lower than that of ordinary coils. In addition, the combination of different particle sizes will have better effects.

[0021] 2. The microporous calcium silicate particles in the present invention have a porous structure and have heat insulation properties, which can effectively block the heat radiated by sunlight. The heat reflective coating causes the reflection and scattering effect of sunlight through the refractive difference between the resin and the glass beads in the coating. The solar reflectance of the coating (white) is greater than 0.81, and the hemispherical emissivity is greater than 0.83. The sintered mineral particles are applied to the surface of the modified asphalt coil. In the actual outdoor application test, the surface temperature of the ordinary coil is above 60°C, while the surface temperature of the coil of the present invention is 33-36°C, which effectively reduces the surface temperature of the coil and prolongs the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the waterproof membrane of the present invention;

[0023] In the figure, 201 is a heat-reflecting and heat-insulating mineral granular layer, 202 is a first modified asphalt coating, 203 is a modified asphalt fully impregnated polyester tire base layer, 204 is a second modified asphalt coating, and 205 is a PE film;

[0024] Figure 2 It is a heat-reflecting and heat-insulating mineral granular layer structure;

[0025] In the figure, 101 is heat reflective coating, and 102 is microporous calcium silicate particles. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The modified asphalt in the following examples and comparative examples was prepared by the following method: first, 52 parts of 90# asphalt was added, stirred and heated to 180°C, then 5 parts of SBS and 3 parts of APAO were added and dispersed for 50 minutes, 15 parts of 60-mesh tire rubber powder was added, stirred for 2 hours, and finally 25 parts of talcum powder was added and dispersed for 30 minutes to obtain modified asphalt.

[0028] Figure 1 201 is a heat-reflecting and heat-insulating mineral granular layer, 202 is a first modified asphalt coating, 203 is a modified asphalt fully impregnated polyester base layer, 204 is a second modified asphalt coating, and 205 is a PE film;

[0029] Figure 2 It is a heat-reflecting and heat-insulating mineral granular layer structure; in the figure, 101 is a heat-reflecting coating, and 102 is microporous calcium silicate particles.

[0030] Example 1

[0031] A heat-reflective modified asphalt waterproofing coiled material that can be used externally comprises, arranged in order from top to bottom: a heat-reflective heat-insulating mineral granular material layer, a first modified asphalt coating, a modified asphalt fully impregnated polyester base layer, a second modified asphalt coating, and a PE film; wherein the total thickness of the first modified asphalt coating, the modified asphalt fully impregnated polyester base layer, and the second modified asphalt coating is 4 mm;

[0032] The preparation method thereof comprises the following steps:

[0033] S1, mixing 45 parts of water-based acrylic emulsion, 10 parts of rutile titanium dioxide, 5 parts of borate glass microspheres, 1 part of Dow Corning silane coupling agent 6040, and 20 parts of deionized water to obtain a heat reflective coating;

[0034] S2, drying the microporous calcium silicate particles, mixing them with heat reflective coating, impregnating the microporous calcium silicate particles, and sintering them at 180° C. to obtain heat reflective insulation mineral granules, wherein the ratio of primary microporous calcium silicate with 10-15 meshes, secondary microporous calcium silicate with 15-25 meshes, and tertiary microporous calcium silicate with 25-30 meshes in the microporous calcium silicate particles is 1:2:1;

[0035] S3, sequentially add 90# asphalt, 10# asphalt and C9 resin into a reaction kettle, heat to 180°C, stir evenly to obtain pre-soak oil, wherein the mass ratio of 90# asphalt, 10# asphalt and C9 resin is 6:3:1;

[0036] S4, 260g / m 2 The long-fiber polyester tire base is pre-impregnated in pre-impregnated oil to obtain a modified asphalt fully impregnated polyester tire base;

[0037] S5. Dip the modified asphalt fully impregnated polyester base layer into the modified asphalt, and after being shaped by a shaping roller, cover one side with a PE film and the other side with heat-reflecting and heat-insulating mineral granules, emboss, cool, and roll to obtain a waterproof roll material.

[0038] Example 2

[0039] A heat-reflective modified asphalt waterproofing coiled material that can be used externally comprises, arranged in order from top to bottom: a heat-reflective heat-insulating mineral granular material layer, a first modified asphalt coating, a modified asphalt fully impregnated polyester base layer, a second modified asphalt coating, and a PE film; wherein the total thickness of the first modified asphalt coating, the modified asphalt fully impregnated polyester base layer, and the second modified asphalt coating is 3 mm;

[0040] The preparation method thereof comprises the following steps:

[0041] S1, mixing 50 parts of water-based acrylic emulsion, 5 parts of rutile titanium dioxide, 10 parts of borate glass microspheres, 1 part of Dow Corning silane coupling agent 6040, and 25 parts of deionized water to obtain a heat reflective coating;

[0042] S2, drying the microporous calcium silicate particles, mixing them with heat reflective coating, impregnating the microporous calcium silicate particles, and sintering them at 180° C. to obtain heat reflective insulation mineral granules, wherein the ratio of primary microporous calcium silicate with 10-15 meshes, secondary microporous calcium silicate with 15-25 meshes, and tertiary microporous calcium silicate with 25-30 meshes in the microporous calcium silicate particles is 1:3:1;

[0043] S3, add 90# asphalt, 10# asphalt and C9 resin to the reactor in sequence, heat to 185°C, stir evenly to obtain pre-soak oil, wherein the mass ratio of 90# asphalt, 10# asphalt and C9 resin is 6:3:1;

[0044] S4, 260g / m 2 The long-fiber polyester tire base is pre-impregnated in pre-impregnated oil to obtain a modified asphalt fully impregnated polyester tire base;

[0045] S5. Dip the modified asphalt fully impregnated polyester base layer into the modified asphalt, and after being shaped by a shaping roller, cover one side with a PE film and the other side with heat-reflecting and heat-insulating mineral granules, emboss, cool, and roll to obtain a waterproof roll material.

[0046] Example 3

[0047] A heat-reflective modified asphalt waterproofing coiled material that can be used externally comprises, arranged in order from top to bottom: a heat-reflective heat-insulating mineral granular material layer, a first modified asphalt coating, a modified asphalt fully impregnated polyester base layer, a second modified asphalt coating, and a PE film; wherein the total thickness of the first modified asphalt coating, the modified asphalt fully impregnated polyester base layer, and the second modified asphalt coating is 5 mm;

[0048] The preparation method thereof comprises the following steps:

[0049] S1, 55 parts of water-based acrylic emulsion, 15 parts of rutile titanium dioxide, 15 parts of borate glass microspheres, 1 part of Dow Corning silane coupling agent 6040, and 15 parts of deionized water are mixed to obtain a heat reflective coating;

[0050] S2, drying the microporous calcium silicate particles, mixing them with heat reflective coating, impregnating the microporous calcium silicate particles, and sintering them at 180° C. to obtain heat reflective insulation mineral granules, wherein the ratio of primary microporous calcium silicate with 10-15 meshes, secondary microporous calcium silicate with 15-25 meshes, and tertiary microporous calcium silicate with 25-30 meshes in the microporous calcium silicate particles is 1:8:1;

[0051] S3, add 90# asphalt, 10# asphalt and C9 resin to the reactor in sequence, heat to 190°C, stir evenly to obtain pre-soak oil, wherein the mass ratio of 90# asphalt, 10# asphalt and C9 resin is 6:3:1;

[0052] S4, 260g / m 2 The long-fiber polyester tire base is pre-impregnated in pre-impregnated oil to obtain a modified asphalt fully impregnated polyester tire base;

[0053] S5. Dip the modified asphalt fully impregnated polyester base layer into the modified asphalt, and after being shaped by a shaping roller, cover one side with a PE film and the other side with heat-reflecting and heat-insulating mineral granules, emboss, cool, and roll to obtain a waterproof roll material.

[0054] Example 4

[0055] A heat-reflective modified asphalt waterproofing coiled material that can be used externally comprises, arranged in order from top to bottom: a heat-reflective heat-insulating mineral granular material layer, a first modified asphalt coating, a modified asphalt fully impregnated polyester base layer, a second modified asphalt coating, and a PE film; wherein the total thickness of the first modified asphalt coating, the modified asphalt fully impregnated polyester base layer, and the second modified asphalt coating is 4 mm;

[0056] The preparation method thereof comprises the following steps:

[0057] S1, mixing 45 parts of water-based acrylic emulsion, 10 parts of rutile titanium dioxide, 5 parts of borate glass microspheres, 1 part of Dow Corning silane coupling agent 6040, and 20 parts of deionized water to obtain a heat reflective coating;

[0058] S2, drying the first-grade microporous calcium silicate particles with a mesh size of 10 to 15, mixing them with heat-reflective coating, impregnating the microporous calcium silicate particles, and sintering them at 180° C. to obtain heat-reflective and heat-insulating mineral granules;

[0059] S3, sequentially add 90# asphalt, 10# asphalt and C9 resin into a reaction kettle, heat to 180°C, stir evenly to obtain pre-soak oil, wherein the mass ratio of 90# asphalt, 10# asphalt and C9 resin is 6:3:1;

[0060] S4, 260g / m 2 The long-fiber polyester tire base is pre-impregnated in pre-impregnated oil to obtain a modified asphalt fully impregnated polyester tire base;

[0061] S5. Dip the modified asphalt fully impregnated polyester base layer into the modified asphalt, and after being shaped by a shaping roller, cover one side with a PE film and the other side with heat-reflecting and heat-insulating mineral granules, emboss, cool, and roll to obtain a waterproof roll material.

[0062] Example 5

[0063] A heat-reflective modified asphalt waterproofing coiled material that can be used externally comprises, arranged in order from top to bottom: a heat-reflective heat-insulating mineral granular material layer, a first modified asphalt coating, a modified asphalt fully impregnated polyester base layer, a second modified asphalt coating, and a PE film; wherein the total thickness of the first modified asphalt coating, the modified asphalt fully impregnated polyester base layer, and the second modified asphalt coating is 4 mm;

[0064] The preparation method thereof comprises the following steps:

[0065] S1, mixing 45 parts of water-based acrylic emulsion, 10 parts of rutile titanium dioxide, 5 parts of borate glass microspheres, 1 part of Dow Corning silane coupling agent 6040, and 20 parts of deionized water to obtain a heat reflective coating;

[0066] S2, drying the third-grade microporous calcium silicate particles with a mesh size of 25 to 30, mixing them with heat-reflective coating, impregnating the microporous calcium silicate particles, and sintering them at 180° C. to obtain heat-reflective and heat-insulating mineral granules;

[0067] S3, sequentially add 90# asphalt, 10# asphalt and C9 resin into a reaction kettle, heat to 180°C, stir evenly to obtain pre-soak oil, wherein the mass ratio of 90# asphalt, 10# asphalt and C9 resin is 6:3:1;

[0068] S4, 260g / m 2 The long-fiber polyester tire base is pre-impregnated in pre-impregnated oil to obtain a modified asphalt fully impregnated polyester tire base;

[0069] S5. Dip the modified asphalt fully impregnated polyester base layer into the modified asphalt, and after being shaped by a shaping roller, cover one side with a PE film and the other side with heat-reflecting and heat-insulating mineral granules, emboss, cool, and roll to obtain a waterproof roll material.

[0070] Comparative Example 1

[0071] The only difference from Example 1 is that the microporous calcium silicate particles are replaced by an equal amount of gray shale.

[0072] Comparative Example 2

[0073] The only difference from Example 1 is that the microporous calcium silicate particles are replaced by an equal amount of black shale.

[0074] Comparative Example 3

[0075] The only difference from Example 1 is that the microporous calcium silicate particles are replaced with an equal amount of red colored sand.

[0076] Comparative Example 4

[0077] The only difference from Example 1 is that the microporous calcium silicate particles are replaced with an equal amount of green colored sand.

[0078] Comparative Example 5

[0079] The only difference from Example 1 is that the microporous calcium silicate particles are replaced by an equal amount of quartz sand.

[0080] After the waterproofing membranes provided in Examples 1 to 5 and Comparative Examples 1 to 5 were exposed to sunlight for 2 hours at 30 to 34° C., the surface temperature of the membranes was tested. The test results are shown in Tables 1 and 2.

[0081] Microporous calcium silicate with a mesh size of 10 to 15 is called primary microporous calcium silicate, microporous calcium silicate with a mesh size of 15 to 25 is called secondary microporous calcium silicate, and microporous calcium silicate with a mesh size of 25 to 30 is called tertiary microporous calcium silicate. Different mesh sizes are used to make heat-reflective and heat-insulating mineral particles, which are also called primary, secondary and tertiary heat-reflective and heat-insulating mineral particles.

[0082] Table 1 Surface temperature of coils in Examples 1 to 5

[0083]

[0084] Table 2 Surface temperature of coils in Example 1 and Comparative Examples 1 to 5

[0085]

[0086] It can be seen from Table 1 that after the coils obtained in Examples 1 to 5 were exposed to sunlight for 2 hours at an environment of 30 to 34°C, the surface temperature of the coils was in the range of 33 to 48°C. Since Examples 4 to 5 used heat-reflecting and heat-insulating mineral particles of the same grade, the surface temperature of the coils was relatively high, while Examples 1 to 3 used mineral particles of different grades to cover the surface of the modified asphalt coils, which reduced the surface temperature of the coils. Therefore, the combination of different particle sizes has a better effect on reducing the surface temperature of the coils.

[0087] As can be seen from Table 2, comparative examples 1 to 4 respectively use gray shale, black shale, red colored sand and green colored sand as mineral particles on the surface of the coil. After the prepared coils are exposed to sunlight for 2 hours at an environment of 30 to 34°C, the surface temperature of the coils is as high as 60°C or more. Comparative example 5 uses quartz sand as mineral particles on the surface of the coil. After being exposed to sunlight for 2 hours at an environment of 30 to 34°C, the surface temperature of the coil reaches 42°C. The surface temperature of the coil provided in Example 1 of the present invention is only 34°C after being exposed for 2 hours under the same environmental conditions. Therefore, the coil provided by the present invention using microporous calcium silicate as the mineral particles on the surface of the coil can effectively reduce the temperature of the surface of the coil, thereby increasing the life of the coil.

[0088] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat-reflective modified asphalt waterproofing membrane that can be used exposed, characterized in that: It comprises, arranged in order from top to bottom: a heat-reflecting heat-insulating mineral granular material layer (201), a first modified asphalt coating (202), a modified asphalt fully impregnated polyester tire base layer (203), a second modified asphalt coating (204), and a PE film (205); The heat-reflecting and heat-insulating mineral granular material layer (201) is made of heat-reflecting and heat-insulating mineral granular materials. The preparation method of the heat-reflecting and heat-insulating mineral granular materials comprises the following steps: drying microporous calcium silicate particles, mixing with heat-reflecting paint, and sintering at 180°C; The microporous calcium silicate particles include: primary microporous calcium silicate with a mesh size of 10-15, secondary microporous calcium silicate with a mesh size of 15-25, and tertiary microporous calcium silicate with a mesh size of 25-30. The ratio of the primary microporous calcium silicate, the secondary microporous calcium silicate, and the tertiary microporous calcium silicate is 1:(2-8):

1.

2. The heat-reflective modified asphalt waterproofing membrane that can be exposed for use according to claim 1 is characterized in that: The heat reflective coating is composed of the following components in parts by weight: 45-55 parts of water-based acrylic emulsion, 5-15 parts of rutile titanium dioxide, 5-15 parts of borate glass microbeads, 1 part of silane coupling agent, and 15-25 parts of deionized water.

3. The heat-reflective modified asphalt waterproofing membrane that can be exposed for use according to claim 1 is characterized in that: The first modified asphalt coating (202) and the second modified asphalt coating (204) are both prepared from modified asphalt. The preparation method of the modified asphalt comprises the following steps: stirring 90# asphalt and heating it to 180°C, adding SBS and APAO and dispersing them for 50 minutes, adding tire rubber powder and stirring for 2 hours, adding talcum powder and dispersing it for 30 minutes to obtain modified asphalt.

4. The heat-reflective modified asphalt waterproofing membrane that can be exposed for use according to claim 1 is characterized in that: The total thickness of the first modified asphalt coating (202), the modified asphalt fully impregnated polyester tread base layer (203), and the second modified asphalt coating (204) is 3 to 5 mm.

5. The heat-reflective modified asphalt waterproofing membrane that can be exposed for use according to claim 3 is characterized in that: The mass ratio of the 90# asphalt, SBS, APAO, tire rubber powder and talcum powder is 52:5:3:15:

25.

6. The heat-reflective modified asphalt waterproofing membrane that can be exposed for use according to claim 1 is characterized in that: The preparation method of the modified asphalt fully impregnated polyester tire base layer (203) comprises the following steps: 2 The long-fiber polyester tire base is pre-impregnated in pre-impregnation oil to obtain a modified asphalt fully impregnated polyester tire base layer (203).

7. The heat-reflective modified asphalt waterproofing membrane that can be exposed for use according to claim 6 is characterized in that: The preparation method of the pre-impregnation oil is as follows: 90# asphalt, 10# asphalt and C9 resin are added into a reaction kettle in sequence, the temperature is raised to 180-190° C., and stirred evenly to obtain the pre-impregnation oil, wherein the mass ratio of the 90# asphalt, 10# asphalt and C9 resin is 6:3:

1.

8. A method for preparing a heat-reflective modified asphalt waterproofing membrane that can be exposed for use according to any one of claims 1 to 7, characterized in that: The following steps are involved: The modified asphalt fully impregnated polyester tire base layer (203) is dipped in the modified asphalt, shaped by a shaping roller, one side is covered with a PE film, the other side is covered with heat-reflecting and heat-insulating mineral granules, embossed, cooled, and rolled to obtain a waterproof roll material.

Images