PMID- 34883704 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20211214 IS - 2073-4360 (Electronic) IS - 2073-4360 (Linking) VI - 13 IP - 23 DP - 2021 Nov 30 TI - Preparation and Finite Element Analysis of Fly Ash/HDPE Composites for Large Diameter Bellows. LID - 10.3390/polym13234204 [doi] LID - 4204 AB - In recent years, buried bellows have often had safety accidents such as pipeline bursts and ground subsidence due to the lack of adequate mechanical properties and other quality problems. In order to improve the mechanical properties of bellows, fly ash (FA) was used as a reinforced filler in high density polyethylene (HDPE) to develop composites. The FA was surface treated with a silane coupling agent and HDPE-g-maleic anhydride was used as compatibilizer. Dumbbell-shaped samples were prepared via extrusion blending and injection molding. The cross-section morphology, thermal stability and mechanical properties of the composites were studied. It was observed that when 10% modified FA and 5% compatibilizer were added to HDPE, the tensile yield strength and tensile breaking strength of the composites were nearly 30.2% and 40.4% higher than those of pure HDPE, respectively, and the Young's modulus could reach 1451.07 MPa. In addition, the ring stiffness of the bellows was analyzed using finite element analysis. Compared with a same-diameter bellows fabricated from common commercially available materials, the ring stiffness increased by nearly 23%. The preparation method of FA/HDPE is simple, efficient, and low-cost. It is of great significance for the popularization of high-performance bellows and the high value-added utilization of FA. FAU - Wu, Angxuan AU - Wu A AD - College of Materials Science & Engineering, Taiyuan University of Technology, Taiyuan 030024, China. FAU - Jia, Lan AU - Jia L AD - College of Materials Science & Engineering, Taiyuan University of Technology, Taiyuan 030024, China. AD - Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030024, China. FAU - Yu, Wenwen AU - Yu W AD - College of Materials Science & Engineering, Taiyuan University of Technology, Taiyuan 030024, China. FAU - Zhu, Fengbo AU - Zhu F AD - College of Materials Science & Engineering, Taiyuan University of Technology, Taiyuan 030024, China. FAU - Liu, Fuyong AU - Liu F AD - College of Materials Science & Engineering, Taiyuan University of Technology, Taiyuan 030024, China. FAU - Wang, Yanqin AU - Wang Y AD - College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China. FAU - Lu, Guoyun AU - Lu G AD - College of Architecture and Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China. FAU - Qin, Shuhao AU - Qin S AD - National Engineering Research Center for Compounding and Modification of Polymer Materials, College of Materials Science and Metallurgy, Guizhou University, Guiyang 550014, China. FAU - Gao, Dongyang AU - Gao D AD - College of Architecture and Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China. FAU - Wang, Hua AU - Wang H AD - Kangmingyuan (Guizhou) Technology Development Co., Ltd., Anshun 561000, China. FAU - Wu, Xiaogang AU - Wu X AUID- ORCID: 0000-0003-3220-8933 AD - College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China. FAU - Zheng, Qiang AU - Zheng Q AD - College of Materials Science & Engineering, Taiyuan University of Technology, Taiyuan 030024, China. AD - Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China. LA - eng GR - 11972242/the National Natural Science Foundation of China/ GR - 52103019/the National Natural Science Foundation of China/ GR - 1331 Project/the Fund for Shanxi "1331 Project"/ GR - 2021SX-TD008/Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering/ GR - 20181102004/Shanxi Province Science and Technology Major Project/ PT - Journal Article DEP - 20211130 PL - Switzerland TA - Polymers (Basel) JT - Polymers JID - 101545357 PMC - PMC8659467 OTO - NOTNLM OT - bellows OT - composite materials OT - finite element analysis OT - fly ash OT - high density polyethylene OT - mechanical properties COIS- We declare that we have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2021/12/11 06:00 MHDA- 2021/12/11 06:01 PMCR- 2021/11/30 CRDT- 2021/12/10 01:01 PHST- 2021/11/11 00:00 [received] PHST- 2021/11/26 00:00 [revised] PHST- 2021/11/27 00:00 [accepted] PHST- 2021/12/10 01:01 [entrez] PHST- 2021/12/11 06:00 [pubmed] PHST- 2021/12/11 06:01 [medline] PHST- 2021/11/30 00:00 [pmc-release] AID - polym13234204 [pii] AID - polymers-13-04204 [pii] AID - 10.3390/polym13234204 [doi] PST - epublish SO - Polymers (Basel). 2021 Nov 30;13(23):4204. doi: 10.3390/polym13234204.