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Blended composite modified asphalt and preparation method thereof

A composite modified asphalt and blending technology, which is applied to building components, building insulation materials, buildings, etc., can solve the problem of large amount of modified asphalt material polymer, complex equipment, high temperature rigidity, low temperature flexibility, etc. problem, to achieve the effect of improving the comprehensive waterproof performance of asphalt, lowering the price, and alleviating white pollution

Inactive Publication Date: 2012-03-07
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a blended composite modified asphalt, which solves the problems of high temperature rigidity, low temperature flexibility and unsatisfactory temperature sensitivity of the existing blended composite modified asphalt
[0005] Another object of the present invention is to provide the preparation method of the above-mentioned blending compound modified asphalt, which solves the problems that the existing physical modification method prepares the modified asphalt material with a large amount of polymer and complicated equipment

Method used

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  • Blended composite modified asphalt and preparation method thereof
  • Blended composite modified asphalt and preparation method thereof
  • Blended composite modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]Take by weight 2% waste packaging polymer EVA, 5% waste tire powder, 90.5% matrix asphalt, 0.5% divinylbenzene, 2% p-toluenesulfonic acid at a temperature of 150 ° C. Melt the weighed base asphalt, add waste packaging polymer EVA and waste tire powder to the melted base asphalt, keep the temperature constant, manually stir for 20 minutes, add divinylbenzene and p-toluenesulfonic acid, and stir with shears 100min to obtain the blended composite modified asphalt.

Embodiment 2

[0039] Take by weighing 6% waste packaging polymer EVA, 15% waste tire powder, 77.98% matrix asphalt, 0.02% divinylbenzene, 1% p-toluenesulfonic acid according to mass percentage, and put The weighed base asphalt is melted, waste packaging polymer EVA and waste tire powder are added to the melted base asphalt, the temperature is kept constant, manual stirring is carried out for 40 minutes, divinylbenzene and p-toluenesulfonic acid are added, and shearing machine is stirred After 120 minutes, the blended composite modified asphalt was obtained.

Embodiment 3

[0041] Take by weighing 6% waste packaging polymer EVA, 2% waste tire powder, 89.5% matrix asphalt, 0.5% divinylbenzene, 2% p-toluenesulfonic acid according to mass percentage, and put them at a temperature of 160°C Melt the weighed base asphalt, add waste packaging polymer EVA and waste tire powder to the melted base asphalt, keep the temperature constant, manually stir for 30 minutes, add divinylbenzene and p-toluenesulfonic acid, and stir with shears After 120 minutes, the blended composite modified asphalt was obtained.

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Abstract

The invention discloses blended composite modified asphalt, which comprises the following components in percentage by mass: 2 to 6 percent of waste packing polymer EVA, 2 to 15 percent of waste tire powder, 76.5 to 90.5 percent of matrix asphalt, 0.02 to 0.5 percent of cross linker and 1 to 2 percent of catalyst. A preparation method for the blended composite modified asphalt comprises the following steps: firstly, weighing 2 to 6 percent of waste packing polymer EVA, 2 to 15 percent of waste tire powder, 76.5 to 90.5 percent of matrix asphalt, 0.02 to 0.5 percent of cross linker and 1 to 2 percent of catalyst in percentage by mass; and smelting the matrix asphalt at the temperature of between 150 and 180 DEG C, adding the waste packing polymer EVA and the waste tire powder into the smelted matrix asphalt, keeping the temperature constant, manually stirring the mixture for 20 to 40 minutes, adding the cross linker and the catalyst into the mixture, and stirring the mixture for 100 to 120 minutes by a shearing machine to obtain the blended composite modified asphalt. The blended composite modified asphalt and the preparation method thereof of the invention solve the problems of large consumption of waterproof material polymer and complex equipment in the physical modification method for preparing the modified asphalt.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to a modified asphalt material, in particular to a blended composite modified asphalt, and also relates to a preparation method of the blended composite modified asphalt. Background technique [0002] The so-called modified asphalt, according to the definition of my country's "GB / T18378-2000 Terminology of Waterproof Asphalt and Waterproof Membrane", refers to the uniform mixing of rubber, synthetic resin and other organic polymers with a molecular weight greater than that of the asphalt itself. mixture. [0003] At present, most of the modified asphalt waterproofing materials are dispersed in the molten asphalt by stirring and grinding the polymer through the hot-melt method, that is, the physical modification method. After modification by this method, the high-temperature rigidity, low-temperature flexibility and temperature sensitivity of asphalt are improved. Although ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L23/08C08L31/04C08L21/00C08K5/01C08J3/24C08J11/04
CPCY02P20/143Y02W30/62
Inventor 方长青周世生陈瑞骆光林
Owner XIAN UNIV OF TECH
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