Abstract
A styrene-butadiene-styrene (SBS) modified asphalt compound was prepared by the addition of polyphosphoric acid (PPA) and sulfur. The effect of PPA and sulfur on major physical properties, including toughness and tenacity, aging resistance, and storage stability was investigated. The structural characteristics of SBS-modified (SM) asphalt, SBS/PPA-modified (SPM) asphalt, and SBS/PPA/sulfur-modified (SPSM) asphalt were investigated using scanning electron microscopy (SEM), gel filtration chromatography (GPC), and thermal analysis. It has been found that acidification prompted the clustering of SBS particles and confined the swelling of SBS, making SPM asphalt more susceptible to aging. Vulcanization changed the morphological characteristics of SBS in asphalt, improved the compatibility between SBS and asphalt, and weakened the aging susceptibility. Therefore, it is reasonable to modify SM asphalt by using PPA and sulfur together.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Articles in the same Issue
- Frontmatter
- Review Articles
- Electron beam processing of rubbers and their composites
- A review on graphene/rubber nanocomposites
- Recent advances on melt-spun fibers from biodegradable polymers and their composites
- Research Articles
- Toughened poly(butylene succinate)/polylactide/poly(vinyl acetate) ternary blend without sacrificing the strength
- Investigation on the sealing performance of polymers at ultra high pressures
- Effect mechanism of acidification and vulcanization on SBS-modified asphalt
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Articles in the same Issue
- Frontmatter
- Review Articles
- Electron beam processing of rubbers and their composites
- A review on graphene/rubber nanocomposites
- Recent advances on melt-spun fibers from biodegradable polymers and their composites
- Research Articles
- Toughened poly(butylene succinate)/polylactide/poly(vinyl acetate) ternary blend without sacrificing the strength
- Investigation on the sealing performance of polymers at ultra high pressures
- Effect mechanism of acidification and vulcanization on SBS-modified asphalt
- Effects of blending poly(lactic acid) and thermoplastic polyester polyurethanes on the mechanical and adhesive properties in two-component injection molding
- Mechanical and morphological characterization of sisal/kenaf/pineapple mat reinforced hybrid composites
- News
- PPS News