Title:
MODIFIED ASPHALT AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/129148
Kind Code:
A1
Abstract:
The modified asphalt provided by the present invention is prepared from the following raw materials in parts by weight: 100-120 parts of asphalt, 6-20 parts of a modifier, 3-9 parts of a compatilizer, 0.15-0.25 part of sulfur, 0.4-0.6 parts of a non-amine anti-stripping agent and 0.2-0.4 parts of a coupling agent; and the modifier comprises a styrene-butadiene-styrene block copolymer, a rubber and a polyurethane. The modified asphalt provided by the present invention can simultaneously satisfy: an elastic recovery at 25ºC of ≥98%, a dynamic viscosity at 60ºC of ≥500,000 Pa·s, a composite shear modulus at 60ºC of ≥10 Pa, and a critical temperature at G*/Sin≥2.2kPa of ≥94ºC.
Inventors:
YU JIANGMIAO (CN)
SU GUOCHENG (CN)
MO GUANGLIANG (CN)
CHEN FUDA (CN)
CHEN LIJUAN (CN)
LU JIANYUAN (CN)
SU GUOCHENG (CN)
MO GUANGLIANG (CN)
CHEN FUDA (CN)
CHEN LIJUAN (CN)
LU JIANYUAN (CN)
Application Number:
PCT/CN2018/124387
Publication Date:
July 04, 2019
Filing Date:
December 27, 2018
Export Citation:
Assignee:
UNIV SOUTH CHINA TECH (CN)
GUANGDONG GT TECH ROAD MATERIAL TECH CO LTD (CN)
GUANGDONG GT TECH ROAD MATERIAL TECH CO LTD (CN)
International Classes:
C08K5/01; C08L95/00; C08L21/00; C08L53/02; C08L75/04
Foreign References:
| CN108034270A | 2018-05-15 | |||
| CN103740119A | 2014-04-23 | |||
| CN103468010A | 2013-12-25 | |||
| CN101560332A | 2009-10-21 | |||
| CN106221252A | 2016-12-14 | |||
| CN107163597A | 2017-09-15 |
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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