Drainage pavement asphalt modifier with improved viscosity and method for preparing same

A technology of asphalt modifier and weight, which is applied in the direction of building components, building insulation materials, construction, etc., can solve the problems of cost increase, and achieve the effect of improving viscosity and excellent pellet cohesion

Inactive Publication Date: 2006-12-13
KOREA KUMHO PETROCHEMICAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the process performance problems caused by condensation, anti-coagulation agents such as calcium carbonate or emulsified silicon (oil) need to be used, resulting in further cost increases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 50 parts by weight of star-shaped SBS, 50 parts by weight of linear SBS, 15 parts by weight of tackifying resin, 10 parts by weight of paraffin-based process oil, 0.2 parts by weight of polyethylene wax and 0.3 parts by weight of hindered phenol ( hindered phenol) source antioxidant into the Hensehl mixer. After mixing for 10 minutes, 15 parts by weight of an aromatic source tackifying resin (softening point: 110° C.) was added, followed by mixing with a tumbler mixer for 5 minutes. The mixture is then melted at 180-200°C and mixed with a twin-screw extruder. Extrude strips of asphalt modifier from a twin-screw extruder. Finally, the granular asphalt modifier is obtained by cooling and cutting the strip-shaped asphalt modifier. An asphalt composition was prepared by mixing 8% by weight of granular asphalt modifier and 92% by weight of asphalt. Melting properties, 60°C viscosity, softening point, penetration, toughness and toughness were then determined. The test res...

Embodiment 2

[0044] Put 60 parts by weight of star-shaped SBS, 40 parts by weight of linear SBS, 20 parts by weight of aromatic source tackifying resin (softening point is 110 ° C), 20 parts by weight of paraffin-based process oil, 0.2 parts by weight of polyethylene Wax and 0.3 parts by weight of hindered phenol source antioxidant are used as raw materials of asphalt modifier. The rest of the preparation steps are the same as those described in Example 1. In addition, the properties of the asphalt composition were measured in the same manner as in Example 1. The test results are shown in Table 1.

Embodiment 3

[0046] Put 60 parts by weight of star-shaped SBS, 40 parts by weight of linear SBS, 10 parts by weight of aromatic source tackifying resin (softening point is 110 ° C), 10 parts by weight of aliphatic hydrocarbon source tackifying resin, 20 parts by weight of paraffin Base process oil, 3 parts by weight of aromatic base process oil, 0.2 parts by weight of polyethylene wax and 0.3 parts by weight of hindered phenol derived antioxidant as raw materials for asphalt modifier. The rest of the preparation steps are the same as those described in Example 1. In addition, the properties of the asphalt composition were measured in the same manner as in Example 1. The test results are shown in Table 1.

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Abstract

Disclosed is a tar modifier which comprises: 1) 100 shares weight star styrene butadiene styrene compound block copolymer base material, wherein the styrene monomer is 15 to 50 weight percentage, andthe molecular weight of copolymer is 50000 to 300000; 2) 10 to 60 shares weight sticking resin; 3) 5 to 70 shares weight at least one from aromatic radical metal working fluid, paraffinic base metal working fluid, mining metal working fluid, liquid polymer metal working fluid or fat metal working fluid; wherein the compound block copolymer comprises 1) 40 to 100 weight percentage star styrene butadiene styrene block copolymer with 2 to 6 branches, 2) 0 to 40 weight percentage linear styrene butadiene styrene block copolymer, 3) 0 to 30 weight percentage multi block styrene butadiene styrene copolymer and 4) 0 to 10 weight percentage styrene butadiene double block copolymer.

Description

technical field [0001] The invention relates to a drainage pavement asphalt modifier with increased viscosity and a preparation method thereof. More specifically, the present invention relates to a kind of substituting linear vinyl aromatic hydrocarbon-conjugated diene block copolymer with star-shaped vinyl aromatic hydrocarbon-conjugated diene block copolymer as the active ingredient of asphalt modifier, which Increases the viscosity of the bituminous composition. [0002] Furthermore, while the drainage asphalt modifier of the present invention increases the viscosity of the asphalt composition at 60°C, asphalt melting and dispersion and other mechanical properties, such as permeability, rigidity, toughness, etc., can still be maintained. Therefore, the paving asphalt mixture containing the asphalt modifier and pellets provides both excellent pellet cohesion at low temperature, rutting resistance and impact resistance, and increases the viscosity of the asphalt composition....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/00B29C47/00B29B9/12
CPCC08K5/01C08L25/10C08L31/04C08L33/20C08L51/06C08L91/06C08L2201/00
Inventor 千胜瀚陈善雨李彰镕朴正镐
Owner KOREA KUMHO PETROCHEMICAL CO LTD
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