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Modified asphalt coating, mineral granule surface modified asphalt waterproofing sheet material, preparation methods of coating and sheet material and mineral granule heating spreading device

A technology for modifying asphalt and mineral granules, applied in asphalt coatings, devices for coating liquid on surfaces, chemical instruments and methods, etc., can solve the problem of poor adhesion of mineral granules that affect the service life and waterproof performance of waterproof membranes , Mineral particles falling off and other problems, to achieve the effect of simple and exquisite device design, improve adhesion, and delay performance attenuation

Inactive Publication Date: 2019-07-05
河南东方雨虹建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the waterproofing membranes used in civil engineering and construction projects are SBS elastomer modified asphalt waterproofing membranes or APP plastic modified asphalt waterproofing membranes; the standard stipulates that the waterproofing membranes used for long-term exposure can only be modified with mineral granules. However, the mineral particle surface modified asphalt waterproofing membrane on the market has very poor adhesion of mineral particles, and it is difficult to pass the test; during the construction of the waterproofing membrane and after a period of construction, Mineral aggregates are easy to fall off to varying degrees, which affects the service life and waterproof performance of the waterproof membrane. Therefore, it is urgent to develop a mineral aggregate surface modified bitumen waterproof membrane, which can ensure the adhesion of mineral aggregates. Qualified, it can also ensure that the shedding of mineral particles is greatly reduced during the construction of the waterproofing membrane and during the exposed use after construction, and at the same time it can prolong the service life of the waterproofing membrane in the actual application process

Method used

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  • Modified asphalt coating, mineral granule surface modified asphalt waterproofing sheet material, preparation methods of coating and sheet material and mineral granule heating spreading device
  • Modified asphalt coating, mineral granule surface modified asphalt waterproofing sheet material, preparation methods of coating and sheet material and mineral granule heating spreading device
  • Modified asphalt coating, mineral granule surface modified asphalt waterproofing sheet material, preparation methods of coating and sheet material and mineral granule heating spreading device

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preparation example Construction

[0032] The second aspect of the present invention provides the preparation method of above-mentioned modified asphalt coating material, and this preparation method comprises:

[0033] (1) Grinding and mixing anhydrous asphalt with SBR to obtain a first mixture; then grinding and mixing said first mixture with SEBS to obtain a second mixture, and finally grinding and mixing said second mixture with a tackifying resin to obtain the third mixture;

[0034] (2) Mix the third mixture and the filler uniformly to obtain the coating material.

[0035] According to the present invention, preferably, in step (1), the dehydration method of the anhydrous asphalt is: dehydrating the asphalt above 160°C for 0.5-1.5h;

[0036] Grinding and mixing anhydrous asphalt and SBR at 180-200°C for 0.5-1h to obtain the first mixture; then grinding and mixing the first mixture and SEBS at 180-200°C for 1-1.5h to obtain the second mixture, and finally Grinding and mixing the second mixture with the ta...

Embodiment 1

[0067] (1) Preparation of modified asphalt coating material: in the mixing tank, pour 58wt% asphalt, heat up to 160°C and dehydrate for 1 hour to obtain anhydrous asphalt; then, add 2wt% in the mixing tank SBR, start the colloid mill grinding, control the temperature at 190°C for 1 hour, then add 14wt% SEBS, continue to grind and stir at 190°C for 1 hour, then add 3wt% tackifying resin, continue to grind and stir at 190°C for 0.5 hours; finally, Add the mixed material and 23wt% filler after grinding and mixing with a colloid mill into the mixing tank, and continue to stir at 190°C for 1.5 hours to obtain the modified asphalt coating material.

[0068] (2) Preparation of modified asphalt waterproofing membrane on the surface of mineral granules: long-fiber polyester non-woven fabric is used as the tire base, soaked with pre-impregnated oil, squeezed dry, and then covered with steps on both sides of the impregnated and squeezed tire base. The modified asphalt coating material pr...

Embodiment 2

[0070] (1) Preparation of modified asphalt coating material: In the mixing tank, pour 60wt% asphalt, heat up to 160°C and dehydrate for 1 hour to obtain anhydrous asphalt; then, add 3wt% in the mixing tank SBR, start the colloid mill grinding, control the temperature at 190°C for 0.5 hours, then add 13wt% SEBS, continue to grind and stir at 190°C for 1.5 hours, then add 3wt% tackifying resin, continue to grind and stir at 190°C for 1 hour; finally, Add the mixed material and 21wt% filler after colloid mill grinding and mixing into the mixing tank, and continue to stir at 190°C for 1.5 hours to obtain the modified asphalt coating material.

[0071] (2) Preparation of modified asphalt waterproofing membrane on the surface of mineral granules: long-fiber polyester non-woven fabric is used as the tire base, soaked with pre-impregnated oil, squeezed dry, and then covered with steps on both sides of the impregnated and squeezed tire base. The modified asphalt coating material prepar...

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Abstract

The invention discloses a modified asphalt coating, a mineral granule surface modified asphalt waterproofing sheet material, preparation methods of the coating and the sheet material and a mineral granule heating spreading device. The modified asphalt coating comprises the following components, based on a total weight of the modified asphalt coating: 58-65 wt% of asphalt, 2-6 wt% of SBR, 8-14 wt%of SEBS, 3-6 wt% of tackifying resin, and 15-23 wt% of a filler, wherein the sum of weight fractions the components is 100%. According to the coating provided by the invention, a softening agent is not added, the coating does not contain the softening agent, so that the prepared mineral granule surface modified asphalt waterproofing sheet material has better stability, the performance degradationof the waterproof sheet material can be delayed, and adhesion of mineral granules can be improved; the SEBS is added, so that the prepared mineral granule surface modified asphalt waterproofing sheetmaterial has better UV-resistant stability, oxidation resistance and thermal stability, the performance degradation of the waterproof sheet material can be delayed, and the adhesion of the sheet material and the mineral granules can be improved.

Description

technical field [0001] The invention belongs to the technical field of modified asphalt waterproof coiled material, and more specifically relates to a modified asphalt coating material, a modified asphalt waterproof coiled material on the surface of mineral granules, a preparation method thereof, and a mineral granule heating and spreading device. Background technique [0002] Asphalt waterproofing membrane refers to a roll material made of asphalt material, tire material and anti-sticking material spread on the surface, also known as linoleum. Commonly used in post-type waterproof layer. Bitumen waterproofing membrane refers to tire membrane and tireless membrane. Any roll-shaped material made of thick paper or glass cloth, asbestos cloth, cotton and linen fabrics and other tire materials impregnated with petroleum asphalt is called tire-shaped roll material; asbestos, rubber powder, etc. are mixed into the asphalt material, and after rolling The resulting roll material i...

Claims

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Application Information

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IPC IPC(8): B32B27/32B32B27/02B32B27/36B32B27/12B32B27/08B32B27/14B32B33/00B32B37/00B32B37/08C09D195/00C09D7/61C09D7/65B05C19/04
CPCB05C19/04B32B5/02B32B27/08B32B27/12B32B27/14B32B27/32B32B33/00B32B37/00B32B37/08B32B2255/02B32B2255/26B32B2262/0276B32B2264/10C08K2003/265C08L2205/035C09D7/61C09D7/65C09D195/00C08L9/06C08L53/025C08K3/26
Inventor 姚笃章刘金景吴士玮罗伟新
Owner 河南东方雨虹建筑材料有限公司
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