Polymer Engineering and Science最新文献

{"title":"Mechanically robust and thermal stable polyurethane elastomers with self‐healing and recycling ability","authors":"Tian Pan, Li Yuan, Guozheng Liang, Aijuan Gu","doi":"10.1002/pen.27062","DOIUrl":"https://doi.org/10.1002/pen.27062","url":null,"abstract":"Abstract A series of supramolecular interaction‐based polyurethane elastomers (SPUEs) were synthesized from the reactions of hexamethylene diisocyanate‐functionalized 2‐ureido‐4[1H]‐pyrimidinone (UPy) derivatives and polytetrahydrofuran (PTHF), followed by reactions with polyether amines. The tensile strength, elongation at break and toughness of the optimum SPUE system can reach 62 MPa, 693%, and 189 MJ·m −3 , respectively. All SPUEs have much higher tensile strength and toughness than the reference materials while maintaining large elongation at break owing to the increased hydrogen (H)‐bonding sites and favorable crosslinked networks. SPUEs possess double glass transition temperatures and display good multi‐shape memory behaviors resulting from different soft and hard domains. SPUEs have nanophase‐separated structures, which endow them with excellent transparency within visible light wavelengths ranging from 500 to 800 nm. Owing to adequate H‐bonds, SPUEs exhibit stress relaxation, shape‐reconfigurability, and outstanding healing/recycling properties. The damaged SPUEs show high healing efficiency of 77–97% after heat treatment at 100°C for 12 h. The used SPUEs can be recycled multiple times by dissolving them in N, N‐dimethylformamide (DMF) at ~110°C for 20–30 min, and the third recycled SPUEs can have high mechanical strength retention rate of up to 100%. Highlights Elastomer was constructed through H‐bonds and favorable crosslinked networks. The elastomer has high comprehensive mechanical properties. The elastomer has extremely low and high glass transition temperatures. The elastomer has a high self‐healing efficiency of ~97% after treatment at 100°C. The elastomer can be recycled multiple times.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 3","pages":"1136-1150"},"PeriodicalIF":0.0,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147921151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biomass‐based crosslinked composite anion exchange membranes using bacterial cellulose template towards enhanced ionic conductivity and alkaline stability","authors":"Shijun Nie, LI Zheng-yu, Xinyi Li, Xinhuan Lu, Chunli Gong, Zhengguang Sun","doi":"10.1002/pen.27029","DOIUrl":"https://doi.org/10.1002/pen.27029","url":null,"abstract":"Abstract A balanced relationship among ionic conductivity, mechanical properties and alkaline stability of anion exchange membranes (AEMs) is essential for their practical application in fuel cells. Herein, a porous substrate (BC@LDH) with hierarchical structure was constructed using natural bacterial cellulose (BC) as a template and then in situ grew inorganic hydroxide ion conductor (layered double hydroxide, LDH). The membrane was fabricated via a filling together with sol–gel crosslinking strategy after impregnating an ionomer containing both quaternary ammonium and hydroxyl groups into the porous substrate and then crosslinked by organosiloxane. Due to the synergistic enhancement effect of BC, LDH and cross‐linking, the obtained membrane exhibited a tensile strength of 47.48 MPa that was 88.3% higher than that of the pure ionomer membrane, and showed an ionic conductivity of 70.7 mS cm −1 (80°C) which benefited from the introduction of ionic conductor LDH. More importantly, its alkaline stability was significantly improved and the residual conductivity ratio was still as high as 81.5% even after hot alkali treatment for 580 h. The direct methanol fuel cell assembled with this membrane exhibited a peak power density of 13.6 mW cm −2 with an open‐circuit voltage of 0.72 V, indicating its potential application in biomass‐based AEMs for fuel cells. Highlights Hierarchical porous substrate comprising LDHs anchored BC fiber was prepared. LDH@BC served as a reinforcing substrate and an ion transport medium. The crosslinked membrane showed significantly improved alkaline stability. The membrane had high ionic conductivity and mechanical strength. Providing a new way to design biomass‐based AEMs with high performance.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 2","pages":"620-630"},"PeriodicalIF":0.0,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pen.27029","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147898451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crystallization, thermal, and compatibility performances of poly (butylene succinate) (<scp>PBS</scp>)/poly((R)‐3‐hydroxybutyrate‐co‐(R) 3‐hydroxyhexanoate) (<scp>PHBHHx</scp>) blends","authors":"Yanbo Li, Jinsuo Yu, D. H. Wei, Chengkai Liu, Yan Zhao, Junjia Bian, Shulin Sun, Hongwei Pan, Huili Yang, Lijing Han, Huiliang Zhang","doi":"10.1002/pen.27013","DOIUrl":"https://doi.org/10.1002/pen.27013","url":null,"abstract":"Abstract Biodegradable materials provide protective properties comparable to conventional plastics while diminishing reliance on nonrenewable resources. Environmentally friendly polymer blends were prepared by melting poly(R)‐3‐hydroxybutyrate‐co‐(R)‐3‐hydroxyhexanoate) (PHBHHx) with poly (butylene succinate) (PBS). PBS was synthesized through esterification and polycondensation using 1,4‐butanediol and succinic acid, with tetrabutyltitanate as the catalyst. The PHBHHx is supplied by Bulepha®PHA Company of China, model number BP330. The effects of PHBHHx content on thermal behavior, compatibility, and thermal stability of PBS/PHBHHx blends were systematically investigated. Differential scanning calorimetry (DSC) results indicated that the addition of PHBHHx influenced the crystallization behavior, the crystallization temperature ( T c ) of PBS decreased meanwhile, the crystallization half‐time of PBS is reduced to 1.5 min compared with neat PBS (5 min) after isothermal is crystallized at 95°C. Polarized Optical Microscopy (POM) images also revealed that crystallization rate accelerated in the blend with increasing PHBHHx content. Rheological and Scanning Electron Microscopy (SEM) analysis demonstrated that incorporating a significant content of PHBHHx reduced compatibility between PBS and PHBHHx. Mechanical property testing indicates that the addition of PHBHHx reduced the toughness of blends. Additionally, the addition of a small amount of PHBHHx imparts a higher crystallinity (56%) and heat resistance of the PBS/PHBHHx blends (78°C) was higher than neat PBS (74°C). Highlights Laboratory synthesis of high molecular weight PBS. Optimal ratios improved crystallinity and thermal stability of blends. A systematic study of the crystallization properties of blends.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 1","pages":"338-352"},"PeriodicalIF":0.0,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heterochain entanglements forced by shear forces and their influence on the properties of polylactic acid/hydrogenated styrene‐ethylene‐butylene‐styrene tri‐block copolymers blends","authors":"Yufei Ren, Weiju Hao, Ying Chen, Deling Li, Wenchang Zhuang, Yue Ding, Liming Dong","doi":"10.1002/pen.27002","DOIUrl":"https://doi.org/10.1002/pen.27002","url":null,"abstract":"Abstract A forced entanglement between polylactic acid (PLA) chains and hydrogenated styrene‐ethylene‐butylene‐styrene (SEBS) tri‐block copolymers chains is designed based on the inertia of PLA to shear force and the sensitivity of SEBS to shear force. The melt blending of PLA with SEBS prepared through a twin‐screw extruder is a strategic method to form interchain entanglements. The influence of star‐shaped SEBS ( s ‐SEBS) and linear SEBS ( l ‐SEBS) on the compatibility, crystallization behavior, tensile properties, and rheological characteristics is systematically investigated. The incompatible interfaces between PLA and s ‐SEBS or l ‐SEBS are confirmed by their interfacial tension and micrographs of their cryo‐fractured surfaces. Although the interfacial incompatibility in PLA/ s ‐SEBS blends and PLA/ l ‐SEBS blends, s ‐SEBS, or l ‐SEBS could effectively enhance their crystallization behavior, tensile ductility and dynamic rheological properties. Relative to the Newtonian behavior of PLA, PLA/SEBS blends exhibit obvious shear‐thinning behavior under frequency‐dependent conditions, which clarifies the physical entanglements of PLA/SEBS blends. PLA/ s ‐SEBS blends possess stronger heterogeneous entanglements than PLA/ l ‐SEBS blends, which is verified by the micrographs of cryo‐fractured surfaces, crystallization characteristics, and rheological behavior. This designed concept based on the chain dynamics in the processing provides clues for polymer blends with significantly different sensitivity of chains to shear force to improve their properties. Highlights The melt blending of PLA with SEBS prepared through a twin‐screw extruder. The forced entanglement between PLA chain and SEBS chain is designed. PLA/ s ‐SEBS blends have stronger heterogeneous entanglement. The addition of SEBS can enhance its crystallization behavior and toughness. PLA/SEBS blends exhibit show shear‐thinning behavior in frequency dependence.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 1","pages":"202-214"},"PeriodicalIF":0.0,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pen.27002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147332773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and characterization of waterborne silicone modified epoxy resin","authors":"Lihong He, Jialing Wang, Liming Yang, Fan Yang, Yuefan Ma","doi":"10.1002/pen.26998","DOIUrl":"https://doi.org/10.1002/pen.26998","url":null,"abstract":"Abstract Silicone modified epoxy resin was synthesized with bisphenol‐A epoxy resin (E51) and dimethyldichlorosilane (DMDCS), and waterborne silicone modified epoxy resin (WSER) was prepared. The WSER emulsion exhibited good stability with particle size ranging from 0.5 to 2 μm. Compared with waterborne epoxy resin (WER) cured film, the water resistance of WSER cured film was enhanced by the excellent hydrophobicity of DMDCS. Furthermore, the WSER cured film with 6% DMDCS showed better mechanical properties, and Shore hardness and tensile strength of that were greatly increased. Moreover, the corrosion resistance and ultraviolet (UV) aging resistance of WSER cured film were obviously improved compared to WER cured film. Highlights Dimethyldichlorosilane (DMDCS) was employed to modify bisphenol‐A epoxy resin (E51). Waterborne silicone modified epoxy resin (WSER) was prepared by phase inversion method. WSER cured films did better than WER cured film in water resistance and mechanical properties. WSER cured films showed good corrosion resistance and ultraviolet aging resistance.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"65 1","pages":"149-160"},"PeriodicalIF":0.0,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pen.26998","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147881414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unique polymer‐based composite coating with high anti‐corrosion characteristics and functional fillers","authors":"Aigul Kydyraliyeva, O.K. BEISENBAEV, К. С. Надиров, Сауле Абдразаковна Сакибаева, Nurlybek Otarbayev, B.A. Sakybayev, Saltanat E. Baibotayeva, A.K. Orynbasarov","doi":"10.1002/pen.26941","DOIUrl":"https://doi.org/10.1002/pen.26941","url":null,"abstract":"Abstract The objective of this research is to develop a composite polymer coating with increased thermal conductivity and corrosion resistance for protecting structural materials in heat exchange apparatuses. Chemically pure compounds such as graphene, boron nitride, tyrosine, sodium hydroxide, zinc pyrophosphate, ethyl acetate, and epoxy resin with the addition of secondary polypropylene were utilized as raw materials. The obtained coatings were evaluated using an emission scanning microscope equipped with an energy‐dispersive spectroscopy (EDS) detector. Electrochemical activity was measured using standard equipment within a frequency range of 0.1–0.01 Hz. Thermal conductivity and corrosion resistance were measured at 0.24 W/m K and 9.70 Ω/cm 2 when using only epoxy resin with the addition of secondary polypropylene. When employing a composite consisting of epoxy resin with the addition of secondary polypropylene, boron nitride, graphene, tyrosine, and zinc pyrophosphate, the thermal conductivity and corrosion resistance values were 1.65 W/m K and 11.10 Ω/cm 2 , respectively. Polymer coatings containing 30% composite demonstrated the highest thermal conductivity (1.65 W/m K) and corrosion resistance (11.20 Ω/cm 2 ). The research findings can be utilized to create polymer coatings with enhanced thermal conductivity and corrosion resistance values. This polymer coatings could serve as structural materials for heat exchange devices. Highlights Corrosion resistance increase with complexing of composite coating. Thermal conductivity increase with complexing of composite coating. Use of epoxy resin with secondary polypropylene make thermal conductivity value.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"64 11","pages":"5649-5661"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pen.26941","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147894008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biodegradable composites from poly(butylene adipate‐<i>co</i>‐terephthalate) with soybean protein isolate: Preparation, characterization, and performances","authors":"Mingtian Ren, Yaqing Zhang, Yazhou Yi, Huiling Wang, Qiangxian Wu","doi":"10.1002/pen.26977","DOIUrl":"https://doi.org/10.1002/pen.26977","url":null,"abstract":"Abstract Soy protein isolate (SPI), a widely available and inexpensive natural polymer, can be used as a filler to reduce the cost of poly(butylene adipate‐ co ‐terephthalate) (PBAT) materials. To improve the compatibility between SPI and PBAT, a series of polycaprolactone‐based polyurethane prepolymers (PCLPUs) with different soft segment molecular weights were synthesized and used as compatibilizers to prepare SPI/PBAT composites. At the same time, the effect of PCLPU soft segment molecular weight on the properties of SPI/PBAT composites was studied. Structural, morphological, and property analyses were carried out on the composite materials; the results showed that PCLPU was an effective compatibilizer for SPI/PBAT composite materials. The –NCO group at its end forms a urethane bond with the hydroxyl group in SPI and PBAT. At the same time, the soft segment of PCLPU is physically crosslinked with PBAT to produce a dual physical and chemical effect. The lower the soft segment molecular weight of PCLPU added, the better the performance of the SPI/PBAT composite materials. This is observed because PCLPU with a lower soft segment molecular weight contains more –NCO functional groups, which can better achieve compatibilization between SPI and PBAT through chemical crosslinking. The addition of 5% PCLPU‐500 content to the SPI/PBAT composite material increased its tensile elongation, impact strength, and tensile strength by 867%, 264%, and 150%, respectively, compared with those of the SPI/PBAT composite material without a compatibilizer, achieving toughening and strengthening with good processability and biodegradability. This work provides a simple, effective solution for preparing high‐performance, green, and low‐cost biodegradable composite materials. Highlights PBAT composites were prepared using soy protein isolate (SPI) as filler. Different types of PCLPU exist as a reactive compatibilizer for PBAT and SPI. Polycaprolactone‐based polyurethane prepolymer significantly improves the interfacial compatibility of PBAT composites. SPI/PBAT film has good degradability and is a rich source of nitrogen.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"64 12","pages":"6142-6158"},"PeriodicalIF":0.0,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pen.26977","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147904305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Green and safe preparation of antibacterial sutures composed of PLA ultrafine fibers","authors":"Yuhang Wang, H. Y. Fu, Jing Tan, Mahmoud M. Bubakir, Xiaodong Xu, Haoyi Li, Weimin Yang","doi":"10.1002/pen.26948","DOIUrl":"https://doi.org/10.1002/pen.26948","url":null,"abstract":"Abstract The electrospun yarn for sutures has gained worldwide attention due to its fine fibers that resemble the extracellular matrix and its abundant functional sites. However, the use of a large number of toxic solvents poses safety risks and environmental pollution during production, making it challenging to directly apply electrospun yarn in the biomedical field. In this study, an environmentally friendly and safe method without toxic solvents was proposed for preparing antibacterial PLA ultrafine fiber sutures. This method involves melt electrospinning, hot‐stretching, low‐temperature plasma treatment, and chitosan grafting. The PLA ultrafine fiber sutures exhibit a high tensile strength which is 2.04 N before knotting and 1.57 N after knotting. The suture diameter is 118.7 μm and average fiber diameter is 1.72 μm. Chitosan grafted on the fiber surface provides excellent antibacterial properties for the sutures, with antibacterial rates against Escherichia coli and Staphylococcus aureus reaching 99.89% and 99.11%, respectively. The cell survival rate is 97.33%, while hemolysis rate is only 2.35%, demonstrating excellent biocompatibility of PLA ultrafine fiber sutures. This study presents a green and safe method for preparing clinically applicable absorbable antibacterial surgical sutures with high mechanical properties. Highlights A green and safe method for preparing PLA‐CS ultrafine fiber sutures. PLA‐CS suture with a tensile strength of 2.04 N and a fiber diameter of 1.72 μm. PLA‐CS suture with good antibacterial property and biocompatibility.","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"64 11","pages":"5737-5749"},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/pen.26948","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147913093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Epoxy composite dust reinforced novel polypropylene composites: An eco‐friendly approach toward sustainable resource management","authors":"Hitesh Sharma, Sandeep Gairola, Joy Prakash Misra, Inderdeep Singh","doi":"10.1002/pen.26968","DOIUrl":"https://doi.org/10.1002/pen.26968","url":null,"abstract":"<jats:label/>This study presents an innovative technique for recycling leftover epoxy composites reinforced with natural fillers. The waste epoxy composites were successfully ground into a 75–150 μm fine powder. With the aid of extrusion injection molding, this powder was subsequently utilized to create polypropylene matrix‐based polymer composites with variable filler loadings ranging from 10% to 30%. The mechanical, thermal, thermomechanical, and morphological properties of the developed composites were assessed. The greatest tensile strength of the polypropylene composites produced with 10% filler loading was found to be 24.15 MPa. The addition of epoxy composite filler increased the thermal stability. During morphological investigations, it was discovered that pits, voids, and filler agglomerations predominated the fractured surface of the developed composites. Overall, it can be concluded that there is a lot of promise for value‐added recycling of thermosetting resin‐based composites using this low‐cost, high‐efficiency, and ecologically benign process, which would lessen the environmental impact of plastic.Highlights<jats:list list-type=\"bullet\"> <jats:list-item>Novel polypropylene composites using epoxy composite dust was developed.</jats:list-item> <jats:list-item>Mechanical, thermal, thermomechanical, and morphological studies were performed.</jats:list-item> <jats:list-item>Toys, tableware, mementos, and furniture can be the potential applications.</jats:list-item> <jats:list-item>The developed composites can reduce plastic load on the environment.</jats:list-item> </jats:list>","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"42 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanosilica reinforced epoxy under super high strain rate loading","authors":"Zhibo Wu, Chenxu Zhang, Jianping Yin, Zhongbin Tang, Yinggang Miao","doi":"10.1002/pen.26966","DOIUrl":"https://doi.org/10.1002/pen.26966","url":null,"abstract":"<jats:label/>Nanosilica reinforced epoxy‐matrix composites have been extensively investigated for higher mechanical strengths since its emergence, while few literatures are available about enhancement characteristics under super high strain rate loading, which is usually encountered during impact. Hereby, this work investigates the composites containing various kinds of nanosilica subjected to compression of strain rate higher than 20,000 s<jats:sup>−1</jats:sup>. A series of stress:strain curves are obtained and it is found that peak stresses increase with increasing strain rate along with silica fraction. Excitedly, the silica particle plays another enhancement role in anti‐localization of adiabatic shearing which occurs in pure epoxy, as indicated from abruptly dropped strain‐hardening index at ~22,000 s<jats:sup>−1</jats:sup>. A mechanism is proposed that uniformly distributed silica delays adiabatic shearing localizations to form through cracks, which is confirmed by fracture surface observance.Highlights<jats:list list-type=\"bullet\"> <jats:list-item>Higher strain rate is achieved experimentally up to ~20,000 s<jats:sup>−1</jats:sup>.</jats:list-item> <jats:list-item>Strain rate effect is found on the peak stress of composites.</jats:list-item> <jats:list-item>Reinforcement of nanosilica is more distinct on strain‐hardening behavior.</jats:list-item> <jats:list-item>Silica particles hinder adjacent shearing localizations from abrupt evolution.</jats:list-item> </jats:list>","PeriodicalId":20281,"journal":{"name":"Polymer Engineering and Science","volume":"54 1","pages":""},"PeriodicalIF":3.2,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}