Modified asphalt and preparation method and application thereof

A technology for modifying asphalt and asphalt, which is applied in building components, building insulation materials, buildings, etc., can solve problems such as affecting the forming speed of the coil, affecting the yield of the product, and groove marks on the coil product, so as to avoid adverse effects and shorten the Modification time, the effect of improving quality

Pending Publication Date: 2022-02-01
SHENZHEN ZHUOBAO TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The modified bitumen production method in the above-mentioned novel modified bitumen waterproofing membrane also has the defect that it takes a long time
Moreover, after adding fillers, carbides are produced during the high-temperature modification process, which affects the molding speed during coil production, and it is easy to produce groove marks in coil products, which affects the yield of products

Method used

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  • Modified asphalt and preparation method and application thereof
  • Modified asphalt and preparation method and application thereof
  • Modified asphalt and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] This embodiment provides a kind of modified asphalt, the preparation method of described modified asphalt comprises the steps:

[0051] (1) Mix asphalt at 110°C, asphalt regenerant at 55°C, and white oil at 25°C according to the formula, and keep warm at 160°C for 60 minutes to obtain premixed asphalt;

[0052] (2) Shearing and grinding mixing the modifying agent and the premixed asphalt obtained in step (1) for 60 minutes according to the formula to obtain the first shearing material; the shearing and grinding is mixed in a colloid mill, and the grinding gap is 0.2 mm;

[0053] (3) Add talcum powder to the first shearing material obtained in step (2), after stirring and mixing, keep it warm at 180°C for 60min, and then perform shearing, grinding and mixing for 30min in a colloid mill with a grinding gap of 0.1mm to obtain the modified Sexual asphalt.

[0054] In parts by weight, the raw materials for preparing the modified asphalt include: 40 parts of asphalt (70#), 1...

Embodiment 2

[0056] This embodiment provides a kind of modified asphalt, the raw material composition of described modified asphalt is identical with embodiment 1, and the preparation method of described modified asphalt comprises the following steps:

[0057] (1) Mix asphalt at 100°C, asphalt regenerant at 50°C and white oil at 20°C according to the formula, and keep warm at 150°C for 70 minutes to obtain premixed asphalt;

[0058] (2) Shearing and grinding mixing the modifying agent and the premixed asphalt obtained in step (1) for 50 minutes according to the formula amount to obtain the first shearing material; the shearing and grinding is mixed in a colloid mill, and the grinding gap is 0.18mm;

[0059] (3) Add talcum powder to the first shearing material obtained in step (2), after stirring and mixing, keep it warm at 175°C for 70min, and then shear, grind and mix for 25min in a colloid mill with a grinding gap of 0.08mm to obtain the modified Sexual asphalt.

Embodiment 3

[0061] This embodiment provides a kind of modified asphalt, the raw material composition of described modified asphalt is identical with embodiment 1, and the preparation method of described modified asphalt comprises the following steps:

[0062] (1) Mix asphalt at 120°C, asphalt regenerant at 60°C and white oil at 30°C according to the formula, and keep warm at 170°C for 50 minutes to obtain premixed asphalt;

[0063] (2) Shearing and grinding mixture modifier and step (1) gained premixed asphalt 70min according to formula quantity, obtains the first shearing material; Said shearing and grinding is mixed and carried out in colloid mill, and grinding gap is 0.24mm;

[0064] (3) Add talcum powder to the first shearing material obtained in step (2), after stirring and mixing, keep it warm at 185°C for 50min, then perform shearing, grinding and mixing for 35min in a colloid mill with a grinding gap of 0.12mm, to obtain the modified Sexual asphalt.

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Abstract

The invention relates to modified asphalt and a preparation method and application thereof, and the modified asphalt is prepared from the following raw materials in parts by weight: 30-50 parts of asphalt, 5-20 parts of an asphalt regenerant, 1-6 parts of white oil, 0.5-2 parts of wax powder, 4-25 parts of a modifier and 20-50 parts of talcum powder. The preparation method comprises the following steps: mixing asphalt, an asphalt regenerant and white oil according to a formula ratio, and preserving heat to obtain premixed asphalt; shearing, grinding and mixing the modifier and the premixed asphalt according to the formula ratio to obtain a first shearing material; adding talcum powder into the first shearing material, stirring and mixing, preserving heat, and then shearing, grinding and mixing to obtain the modified asphalt. Through shearing, grinding and mixing in the preparation process, the modification time of asphalt is shortened, and the adverse effect of carbides generated in the high-temperature modification process on coiled material preparation is also avoided.

Description

technical field [0001] The invention belongs to the technical field of waterproofing, and relates to a waterproof coiled material, in particular to a modified asphalt and its preparation method and application. Background technique [0002] Modified bitumen waterproofing membrane is widely used in roofing, basement, toilet and other waterproofing projects of industrial and civil buildings, as well as waterproofing and moisture-proofing of roof gardens, roads, bridges, tunnels, parking lots, swimming pools and other projects. The leak-free connection is the waterproof barrier of the whole project. The existing modified asphalt waterproofing membrane uses modified petroleum asphalt as the covering layer, polyester fiber non-woven fabric, jute cloth, glass fiber mat and other materials as the base, and plastic film as the anti-adhesive isolation layer. It is processed through certain processing procedures, and has good water resistance, high elasticity and fatigue resistance. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/06C08L53/02C08L9/06C08L57/02C08K3/34
CPCC08L95/00C08L91/06C08L53/02C08L9/06C08L57/02C08K3/34
Inventor 张伟易晓妮吴彩花
Owner SHENZHEN ZHUOBAO TECH
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