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Anti-aging plastomer modified asphalt coating material with magnalium-based layed double hydroxide and preparation method thereof

A double hydroxide, anti-aging technology, applied in the direction of building structure, building insulation materials, building components, etc., can solve the problems of difficult asphalt-based waterproof membrane anti-aging performance, limited stability, etc., to improve UV aging resistance Performance and service life extension effect

Inactive Publication Date: 2011-09-28
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, carbon black must be used in a large amount (greater than 10wt%) to significantly improve the anti-aging ability of asphalt, while organic ultraviolet absorbers and polymer anti-aging layers are organic matter, and their own stability under the action of ultraviolet rays is limited. , so it is difficult to maintain the anti-aging performance of asphalt-based waterproofing membrane for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 12 parts (parts by mass, the same below) of atactic polypropylene (APP) to 58 parts of asphalt (softening point 44.5°C, penetration 120dmm) that has been heated to 170°C, keep the temperature at 170-180°C, Stir with the rotating speed of 4000rpm on the shear mixer for 1.5 hours, add 3 parts of magnesium-aluminum-based layered double hydroxides (formed as Mg 0.75 al 0.25 (OH) 2 (CO 3 ) 0.12 1.2H 2 O, and surface modified by dodecyl siloxane, the particle size in a and b directions is 2.1 μm, and the particle size in the c-axis direction is 0.13 μm, about 110 layers), and the holding temperature is 170-180 ° C , stirred and reacted at a speed of 4000rpm for 1 hour, then added 27 parts of talc powder (200 mesh in particle size), reduced the stirring speed to 2000rpm, kept the temperature at 170-180°C, and stirred for 1 hour to obtain a magnesium aluminum Base-layer double hydroxide aging-resistant plastic body modified asphalt coating material.

[0023] The ultra...

Embodiment 2

[0025] Add 13.5 parts of atactic polypropylene (APP) to 56 parts of asphalt (softening point 44.5°C, penetration 120dmm) that has been heated to 170°C, keep the temperature at 170-180°C, and use a high-shear mixer at 5000rpm Stir at a rotating speed of 1 hour, add 5 parts of magnesium-aluminum-based layered double hydroxide, keep the temperature at 170-180 ° C, stir and react at a rotating speed of 5000 rpm for 1 hour, and then add 25.5 parts of talcum powder (particle size: 200 mesh), Reduce the stirring speed to 3000rpm, keep the temperature at 170-180°C, and stir for 1 hour to obtain a magnesium-aluminum-based layered double hydroxide aging-resistant plastic body modified asphalt coating material.

[0026] The magnesium-aluminium-based layered double hydroxide aging-resistant plastic body modified asphalt coating material was subjected to ultraviolet aging test in the ultraviolet aging box. The softening point before and after increased from 144.2°C to 148.4°C, an increase ...

Embodiment 3

[0028] Add 9 parts of amorphous olefin copolymer (APAO) and 4 parts of random polypropylene (APP) to 55 parts of asphalt (softening point 46.5 °C, penetration 95 dmm) that has been heated to 180 ° C, and keep the temperature at 180 ~ 190°C, stirred at a speed of 3000rpm on a high-shear mixer for 2 hours, added 2 parts of magnesium-aluminum-based layered double hydroxide, kept the temperature at 180-190°C, stirred and reacted at a speed of 4000rpm for 1 hour, and then added 15 1 part of talcum powder and 15 parts of heavy calcium carbonate (both particle sizes are 200 mesh), reduce the stirring speed to 2000rpm, keep the temperature at 180-190°C, and stir for 1 hour to obtain a magnesium-aluminum-based layered double hydroxide Aging-resistant plastomer-modified asphalt coatings.

[0029] The ultraviolet aging test was carried out on the magnesium-aluminum-based layered double hydroxide aging-resistant plastic body modified asphalt coating material in the ultraviolet aging box. ...

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PUM

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Abstract

The invention relates to an anti-aging plastomer modified asphalt coating material used for a waterproof coiled material and a preparation method thereof. The anti-aging plastomer modified asphalt coating material with magnalium-based layered double hydroxide is characterized by being prepared from the following raw materials in percent by mass of 47% to 64% of asphalt, 10% to 15% of plastomer modifier, 1 to 8% of magnalium-based layered double hydroxide and25% to 30% of stuffing. In the invention, by using the magnalium-based layered double hydroxide, ultraviolet aging resistant performance of the plastomer modified asphalt coating material can be prominently enhanced, the service life of the plastomer modified asphalt coating material is prolonged, and broad application prospects are wide.

Description

technical field [0001] The invention relates to an aging-resistant plastic body modified asphalt coating material for waterproof coiled materials and a preparation method thereof. Background technique [0002] Building waterproof materials are an important class of building materials. Asphalt-based waterproof materials are widely used because of their excellent waterproof performance and low price. At present, the amount used accounts for more than 70% of the total waterproof materials in my country. Asphalt-based waterproof material is a sheet material made of modified asphalt as the coating material, fiber fabric or fiber felt as the matrix, and powdery, granular, flake or film materials as the covering material. The properties of the asphalt-based waterproof material are mainly Depends on the asphalt coating used. The asphalt coating material should not only have high temperature non-flowing, low temperature non-brittle cracking, can well adapt to the deformation ability...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L23/12C08L23/00C08K13/06C08K9/06C08K3/26
Inventor 余剑英冯振刚吴少鹏庞凌张恒龙况栋梁秦靓
Owner WUHAN UNIV OF TECH
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