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Oil-filled SBS as well as preparation method and application thereof

A technology of aromatic hydrocarbon oil and styrene block, which is applied in the field of modified asphalt to achieve good effect, enhanced fatigue resistance and improved yellowing resistance

Active Publication Date: 2021-06-25
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the effect of the existing environmentally friendly extender oil compatible with SBS on road engineering and road performance evaluation need to be studied urgently to find a more suitable dosage and preparation scheme

Method used

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  • Oil-filled SBS as well as preparation method and application thereof
  • Oil-filled SBS as well as preparation method and application thereof
  • Oil-filled SBS as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment provides an oil-extended SBS and a preparation method thereof, comprising the following steps:

[0036] (1) Inject 41 parts of styrene-butadiene-styrene block copolymer, 2 parts of zinc oxide, and 1 part of stearic acid into a small electric mixer, and stir for 10 minutes at a speed of 200 r / min. Mix it evenly; wherein the ratio of polystyrene segment and polybutadiene segment in the styrene-butadiene-styrene block copolymer is 30:70;

[0037] (2) Add 2 parts of antioxidants, 3 parts of alkylphenolic resins and 2 parts of accelerators to the mixture prepared in step (1), and stir and develop at a speed of 200r / min for 10min; wherein the antioxidants are hindered phenolic antioxidants. Oxygen agent 565 and phosphite antioxidant TNPP are compounded at a mass ratio of 1:15, and the accelerators are dithiodimorpholine and tetramethylthioperoxydicarbonic acid diamide at a mass ratio of 1: 3 compounded;

[0038](3) Add 1 part of sulfur and 6 parts of carbon ...

Embodiment 2

[0043] This embodiment provides an oil-extended SBS and a preparation method thereof, comprising the following steps:

[0044] (1) Inject 41 parts of styrene-butadiene-styrene block copolymer, 2 parts of zinc oxide, and 1 part of stearic acid into a small electric mixer, and stir for 10 minutes at a speed of 200 r / min. Mix it evenly; wherein the ratio of polystyrene segment and polybutadiene segment in the styrene-butadiene-styrene block copolymer is 30:70;

[0045] (2) Add 1.5 parts of antioxidants, 2 parts of alkylphenolic resins and 1.5 parts of accelerators to the mixture prepared in step (1), and stir and develop at a speed of 200r / min for 10 minutes; wherein the antioxidants are hindered phenolic antioxidants. Oxygen agent 565 and phosphite antioxidant TNPP are compounded at a mass ratio of 1:15, and the accelerators are dithiodimorpholine and tetramethylthioperoxydicarbonic acid diamide at a mass ratio of 1: 3 compounded;

[0046] (3) Add 1 part of sulfur and 5 parts ...

Embodiment 3

[0051] This embodiment provides an oil-extended SBS and a preparation method thereof, comprising the following steps:

[0052] (1) Inject 38 parts of styrene-butadiene-styrene block copolymer, 3 parts of zinc oxide, 2 parts of stearic acid and 38 parts of environmentally friendly aromatic oil into a small electric mixer, and stir at a speed of 250r / min for 12min, Mix it evenly; wherein the ratio of polystyrene segment and polybutadiene segment in the styrene-butadiene-styrene block copolymer is 30:70;

[0053] (2) Add 3 parts of antioxidants, 4 parts of alkylphenolic resins and 3 parts of accelerators to the mixture prepared in step (1), and stir and develop at a speed of 250r / min for 10min; wherein the antioxidants are hindered phenolic antioxidants. Oxygen agent 565 and phosphite antioxidant TNPP are compounded at a mass ratio of 1:15, and the accelerators are dithiodimorpholine and tetramethylthioperoxydicarbonic acid diamide at a mass ratio of 1: 3 compounded;

[0054] (...

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Abstract

The invention discloses oil-filled SBS as well as a preparation method and application thereof. The oil-filled SBS comprises the following components in parts by weight: 36-41 parts of a styrene-butadiene-styrene block copolymer, 2-4 parts of zinc oxide, 1-3 parts of stearic acid, 2-4 parts of an antioxidant, 2-4 parts of tackifying resin, 2-4 parts of an accelerant, 1-2 parts of sulfur, 5-9 parts of carbon black and 35-45 parts of environment-friendly aromatic oil. The oil-filled SBS modified asphalt can be prepared by adding the prepared oil-filled SBS into matrix asphalt, the anti-fatigue performance of an existing cementing material in each temperature interval is effectively improved on the premise of ensuring the mechanical properties of the original asphalt cementing material, and the used raw materials are more environment-friendly compared with other oil-filled asphalt cementing materials; and the oil-filled SBS actively responds to the concept of environment-friendly pavements, and has industrial utilization value.

Description

technical field [0001] The invention relates to the technical field of modified asphalt, in particular to an oil-extended SBS and its preparation method and application. Background technique [0002] In recent years, the traffic volume in my country has increased rapidly, and the heavy-duty traffic has increased day by day, and the accompanying fatigue cracking of the road surface has become more and more obvious. Pavement fatigue is a phenomenon that the pavement performance of asphalt pavement is attenuated under the double action of long-term repeated traffic load and temperature stress. The formation of fatigue cracks will lead to the infiltration of rainwater and groundwater, which will cause pavement diseases such as mud pumping, mud turning, water damage, mesh cracking, etc., and seriously affect the service life of asphalt pavement. With the rise and application of the concept of long-life pavement, high fatigue resistance The development of performance cement is im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L91/00C08L61/06C08K13/02C08K3/22C08K5/09C08K3/06C08K3/04C08K5/526C08K5/378C08K5/43C08K5/40
CPCC08L53/02C08L2205/03C08K2003/2296C08L91/00C08L61/06C08K13/02C08K3/22C08K5/09C08K3/06C08K3/04C08K5/526C08K5/378C08K5/43C08K5/40
Inventor 颜川奇任东亚艾长发袁林新张新玉易虹宇
Owner SOUTHWEST JIAOTONG UNIV
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