Packaging waste polymer/nano coextrusion modified asphalt and preparation method thereof

A technology of modified asphalt and polymers, which is applied in the direction of building structure, building components, building insulation materials, etc., can solve the problems of limited improvement range, ineffective improvement of asphalt performance, and high cost of modified asphalt, so as to improve the comprehensive Performance, mitigation of white pollution, and reduction of modification costs

Inactive Publication Date: 2011-07-13
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a packaging waste polymer / nano co-extrusion modified asphalt, which solves the defects of high cost of existing modified asphalt, ineffective overall improvement of asphalt performance, and limited improvement range

Method used

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  • Packaging waste polymer/nano coextrusion modified asphalt and preparation method thereof
  • Packaging waste polymer/nano coextrusion modified asphalt and preparation method thereof
  • Packaging waste polymer/nano coextrusion modified asphalt and preparation method thereof

Examples

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Effect test

Embodiment 1

[0045] Melt and co-extrude 0.5% packaging waste polymer PE and 0.5% nano-montmorillonite on an extruder to prepare a modifier by mass percentage, take 99% mass percentage of base asphalt to heat and melt, keep the temperature at 150 ° C, add Modifier, manual stirring for 20 minutes, shearing machine stirring for 80 minutes, cooling to 150°C, standing for 50 minutes to make it fully swell; shearing the mixture again on the shearing machine for 80 minutes, until packaging waste polymer PE and nano-montmorillonite Soil melt co-extrusion modifier uniformly dispersed in asphalt, that is. After testing, the penetration of the modified asphalt is 78.8 (0.1mm), and the softening point is 50.4°C.

Embodiment 2

[0047] Melt and co-extrude 13% of packaging waste polymer PE and 12% of nano-montmorillonite on the extruder according to the mass percentage to prepare the modifier; take 75% of the mass percentage of the base asphalt to heat and melt, keep the temperature at 180 ° C, add The prepared modifier was manually stirred for 30 minutes, then stirred by a shear for 80 minutes, cooled to 120°C, and placed for 30 minutes to make it fully swell; the mixture was sheared again on a shear for 90 minutes until the waste polymer PE and The melt co-extrusion modifier of nanometer montmorillonite is evenly dispersed in asphalt. After testing, the penetration of the modified asphalt is 35.4 (0.1mm), and the softening point is 137.2°C.

Embodiment 3

[0049] According to the mass percentage, 10.9% of packaging waste polymer PE and 0.1% of nano-montmorillonite were melted and co-extruded on an extruder to prepare the modifier. Take 89% of the base asphalt by mass and heat it to melt, keep the temperature at 200°C, add the prepared modifier, stir manually for 40 minutes, stir with a shear for 100 minutes, cool down to 100°C, and let it stand for 20 minutes to fully swell; The material is sheared again on a shearing machine for 100 minutes until the melt co-extrusion modifier of packaging waste polymer PE and nano-montmorillonite is uniformly dispersed in the asphalt, and the product is obtained. After testing, the penetration of the modified asphalt is 38.7 (0.1mm), and the softening point is 107.9°C.

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Abstract

The invention discloses a packaging waste polymer / nano coextrusion modified asphalt which is prepared from the following components in percentage by mass: 0.5-13% of packaging waste polymer PE (polyethylene), 0.1-12% of nano montmorillonite and 75-99% base asphalt, wherein the sum of the mass percents of the three components is 100%. The preparation method comprises the following steps: melting and coextruding packaging waste polymer PE and nano montmorillonite on an extruder to prepare a modifier; adding the modifier into the base asphalt, melting by heating, and manually stirring and stirring by a shearing machine so that the mixture sufficiently swells; and shearing so that the modifier is evenly dispersed in the asphalt, thereby obtaining the packaging waste polymer / nano coextrusion modified asphalt. The invention utilizes the recovered packaging waste polymer and nano montmorillonite as the modifier, combines the respective characteristics, and prepares the modifier by melting and coextrusion by using a coextrusion modification technique; and the modifier is used for modifying the base asphalt, thereby lowering the modification cost and enhancing the comprehensive properties of the 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 packaging waste polymer / nano co-extruded modified asphalt, and also relates to a preparation method of the modified asphalt. Background technique [0002] The development of the packaging industry has made great contributions to economic construction, but it has also brought serious environmental problems to human beings. According to the results of a nationwide poll conducted by the US "Packaging" magazine, the vast majority of people believe that the environmental pollution caused by packaging is second only to water pollution, ocean and lake pollution, and air pollution, and is already in fourth place. According to statistics, my country's urban and rural areas generate 400 million tons of garbage every year, 30% of which are packaging waste. And more than 70% are single-use packaging products, which are discarded after...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L23/06C08K3/34
Inventor 方长青周世生陈瑞
Owner XIAN UNIV OF TECH
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