Cargando…

The Effect of Direct-to-Plant Styrene-Butadiene-Styrene Block Copolymer Components on Bitumen Modification

Five types of material, styrene-butadiene-styrene block copolymer (SBS), ethyl-vinyl-acetate (EVA), naphthenic oil, maleic anhydride grafted ethylene-vinyl acetate copolymer (EVA-g-MAH) and butylated hydroxytoluene (BHT) were used as the raw ingredients for manufacturing direct-to-plant SBS in this...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhang, Wengang, Jia, Zhirong, Zhang, Yixia, Hu, Kui, Ding, Longting, Wang, Fang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6401709/
https://www.ncbi.nlm.nih.gov/pubmed/30960124
http://dx.doi.org/10.3390/polym11010140
_version_ 1783400208755851264
author Zhang, Wengang
Jia, Zhirong
Zhang, Yixia
Hu, Kui
Ding, Longting
Wang, Fang
author_facet Zhang, Wengang
Jia, Zhirong
Zhang, Yixia
Hu, Kui
Ding, Longting
Wang, Fang
author_sort Zhang, Wengang
collection PubMed
description Five types of material, styrene-butadiene-styrene block copolymer (SBS), ethyl-vinyl-acetate (EVA), naphthenic oil, maleic anhydride grafted ethylene-vinyl acetate copolymer (EVA-g-MAH) and butylated hydroxytoluene (BHT) were used as the raw ingredients for manufacturing direct-to-plant SBS in this paper. Thirteen kinds of direct-to-plant SBS with different EVA/SBS and naphthenic oil/SBS were prepared as well as the processes diagrammatic sketch of dispersion and swelling of direct-to-plant SBS modifier in bitumen were discussed. Microscopic images of direct-to-plant SBS modified bitumen with different components were obtained using fluorescence microscopy. The micro-images were analysed and quantified with MATLAB software. The influence of key components on the micro-morphology of direct-to-plant SBS-modified bitumen is discussed, followed with the tests on melting points and the melting indexes of direct-to-plant SBS with different EVA/SBS and naphthenic oil/SBS. The performances test of bitumen and bituminous mixture modified by these direct-to-plant SBS were also conducted. Results show that, with the ratio improvement of EVA/SBS or naphthenic oil/SBS, the number of the pixel dot number of area (SBS) in microscopic images increased. Enlargement of the pixel dot number of centre line elongate and the structure fineness was observed, indicating that the dispersion and swelling effect of the SBS modifier in bitumen had been improved. Meanwhile, the macro index, such as the melting point and melting index of direct-to-plant SBS, was also improved corresponding to the increase of EVA/SBS ratio or naphthenic oil/SBS ratio. With the addition of EVA or naphthene oil content, penetration and ductility of direct-to-plant SBS modified bitumen received gradual enhancement, but the softening point and viscosity were found out to be decreased. The high-temperature and low-temperature performances of direct-to-plant SBS modified bituminous mixture can be effectively improved by adding EVA or naphthenic oil. By meeting the required performances of direct-to-plant SBS, modified bitumen and bituminous mixture, the component of direct-to-plant SBS is recommended as, SBS:EVA:naphthenic oil:EVA-g-MAH:BHT is 1:0.1–0.5:0.05–0.2:0.03:0.05. For the compatibleness of SBS with different bitumen are different, necessary tests verification is recommended to be carried out prior to usage.
format Online
Article
Text
id pubmed-6401709
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-64017092019-04-02 The Effect of Direct-to-Plant Styrene-Butadiene-Styrene Block Copolymer Components on Bitumen Modification Zhang, Wengang Jia, Zhirong Zhang, Yixia Hu, Kui Ding, Longting Wang, Fang Polymers (Basel) Article Five types of material, styrene-butadiene-styrene block copolymer (SBS), ethyl-vinyl-acetate (EVA), naphthenic oil, maleic anhydride grafted ethylene-vinyl acetate copolymer (EVA-g-MAH) and butylated hydroxytoluene (BHT) were used as the raw ingredients for manufacturing direct-to-plant SBS in this paper. Thirteen kinds of direct-to-plant SBS with different EVA/SBS and naphthenic oil/SBS were prepared as well as the processes diagrammatic sketch of dispersion and swelling of direct-to-plant SBS modifier in bitumen were discussed. Microscopic images of direct-to-plant SBS modified bitumen with different components were obtained using fluorescence microscopy. The micro-images were analysed and quantified with MATLAB software. The influence of key components on the micro-morphology of direct-to-plant SBS-modified bitumen is discussed, followed with the tests on melting points and the melting indexes of direct-to-plant SBS with different EVA/SBS and naphthenic oil/SBS. The performances test of bitumen and bituminous mixture modified by these direct-to-plant SBS were also conducted. Results show that, with the ratio improvement of EVA/SBS or naphthenic oil/SBS, the number of the pixel dot number of area (SBS) in microscopic images increased. Enlargement of the pixel dot number of centre line elongate and the structure fineness was observed, indicating that the dispersion and swelling effect of the SBS modifier in bitumen had been improved. Meanwhile, the macro index, such as the melting point and melting index of direct-to-plant SBS, was also improved corresponding to the increase of EVA/SBS ratio or naphthenic oil/SBS ratio. With the addition of EVA or naphthene oil content, penetration and ductility of direct-to-plant SBS modified bitumen received gradual enhancement, but the softening point and viscosity were found out to be decreased. The high-temperature and low-temperature performances of direct-to-plant SBS modified bituminous mixture can be effectively improved by adding EVA or naphthenic oil. By meeting the required performances of direct-to-plant SBS, modified bitumen and bituminous mixture, the component of direct-to-plant SBS is recommended as, SBS:EVA:naphthenic oil:EVA-g-MAH:BHT is 1:0.1–0.5:0.05–0.2:0.03:0.05. For the compatibleness of SBS with different bitumen are different, necessary tests verification is recommended to be carried out prior to usage. MDPI 2019-01-15 /pmc/articles/PMC6401709/ /pubmed/30960124 http://dx.doi.org/10.3390/polym11010140 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Wengang
Jia, Zhirong
Zhang, Yixia
Hu, Kui
Ding, Longting
Wang, Fang
The Effect of Direct-to-Plant Styrene-Butadiene-Styrene Block Copolymer Components on Bitumen Modification
title The Effect of Direct-to-Plant Styrene-Butadiene-Styrene Block Copolymer Components on Bitumen Modification
title_full The Effect of Direct-to-Plant Styrene-Butadiene-Styrene Block Copolymer Components on Bitumen Modification
title_fullStr The Effect of Direct-to-Plant Styrene-Butadiene-Styrene Block Copolymer Components on Bitumen Modification
title_full_unstemmed The Effect of Direct-to-Plant Styrene-Butadiene-Styrene Block Copolymer Components on Bitumen Modification
title_short The Effect of Direct-to-Plant Styrene-Butadiene-Styrene Block Copolymer Components on Bitumen Modification
title_sort effect of direct-to-plant styrene-butadiene-styrene block copolymer components on bitumen modification
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6401709/
https://www.ncbi.nlm.nih.gov/pubmed/30960124
http://dx.doi.org/10.3390/polym11010140
work_keys_str_mv AT zhangwengang theeffectofdirecttoplantstyrenebutadienestyreneblockcopolymercomponentsonbitumenmodification
AT jiazhirong theeffectofdirecttoplantstyrenebutadienestyreneblockcopolymercomponentsonbitumenmodification
AT zhangyixia theeffectofdirecttoplantstyrenebutadienestyreneblockcopolymercomponentsonbitumenmodification
AT hukui theeffectofdirecttoplantstyrenebutadienestyreneblockcopolymercomponentsonbitumenmodification
AT dinglongting theeffectofdirecttoplantstyrenebutadienestyreneblockcopolymercomponentsonbitumenmodification
AT wangfang theeffectofdirecttoplantstyrenebutadienestyreneblockcopolymercomponentsonbitumenmodification
AT zhangwengang effectofdirecttoplantstyrenebutadienestyreneblockcopolymercomponentsonbitumenmodification
AT jiazhirong effectofdirecttoplantstyrenebutadienestyreneblockcopolymercomponentsonbitumenmodification
AT zhangyixia effectofdirecttoplantstyrenebutadienestyreneblockcopolymercomponentsonbitumenmodification
AT hukui effectofdirecttoplantstyrenebutadienestyreneblockcopolymercomponentsonbitumenmodification
AT dinglongting effectofdirecttoplantstyrenebutadienestyreneblockcopolymercomponentsonbitumenmodification
AT wangfang effectofdirecttoplantstyrenebutadienestyreneblockcopolymercomponentsonbitumenmodification