High Performance Polymers最新文献_第9页

Study on the aging properties of 3D woven composites under corrosive conditions 三维编织复合材料在腐蚀条件下的老化性能研究

IF 2.1 4区化学

High Performance Polymers Pub Date : 2022-12-19 DOI: 10.1177/09540083221146924

Liang Xu, Jing Xiao, Song Zhou

{"title":"Study on the aging properties of 3D woven composites under corrosive conditions","authors":"Liang Xu, Jing Xiao, Song Zhou","doi":"10.1177/09540083221146924","DOIUrl":"https://doi.org/10.1177/09540083221146924","url":null,"abstract":"Different aging conditions have an important influence on the performance of carbon fiber composites. In this study, the properties of three-dimensional woven carbon fiber reinforced resin matrix composites were investigated and analyzed in three different aging environments (distilled water immersion, 30% H2SO4 solution immersion, and 10% NaOH solution immersion) at 60°C. Mass change, moisture absorption change, Fourier transform infrared spectra (FTIR), surface morphology before and after aging, glass transition temperature (Tg), compression properties, bending properties, and interlayer shear properties were analyzed. The results showed that the immersion in 10% NaOH solution made the specimens destroyed and the aging process was chemically changed. Distilled water immersion and 30% H2SO4 solution immersion moisture absorption rate to meet the FICK law, the aging process only physical changes. The surface of the composite specimens under the three aging conditions produced different degrees of cracks and different degrees of debonding at the interface between the fibers and the resin matrix. The Tg, flexural properties, interlaminar shear properties, and compressive properties of the aged specimens all showed different degrees of degradation.","PeriodicalId":12932,"journal":{"name":"High Performance Polymers","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41392242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Fire retardant polyethylene terephthalate containing 4,4′-(hexafluoroisopropylidene)diphenol-substituted cyclotriphosphazene microspheres 含有4,4′-(六氟异丙烯)二酚取代环三磷腈微球的阻燃型聚对苯二甲酸乙二醇酯

IF 2.1 4区化学

High Performance Polymers Pub Date : 2022-12-16 DOI: 10.1177/09540083221145881

Hai-yan Sun, Yuanzhao Zhu, Hong Chao Xu, Yi Zhong, Linping Zhang, Yimeng Ma, X. Sui, Bijia Wang, Xueling Feng, Zhiping Mao

{"title":"Fire retardant polyethylene terephthalate containing 4,4′-(hexafluoroisopropylidene)diphenol-substituted cyclotriphosphazene microspheres","authors":"Hai-yan Sun, Yuanzhao Zhu, Hong Chao Xu, Yi Zhong, Linping Zhang, Yimeng Ma, X. Sui, Bijia Wang, Xueling Feng, Zhiping Mao","doi":"10.1177/09540083221145881","DOIUrl":"https://doi.org/10.1177/09540083221145881","url":null,"abstract":"Polyphosphazene derivatives are gaining popularity due to their eco-friendly character and high content of flame-retardant components. Herein, a polyphosphazene derivative (PZAF) microsphere was successfully synthesized utilizing an in-situ template approach, which was then employed as an additive flame retardant in polyethylene terephthalate (PET) to improve the fire safety. Thermogravimetric analysis revealed that PZAF promoted the pyrolysis of PET in advance to generate a stable char layer that protects the matrix from heat, consequently increasing char residues. With addition of 10 wt% PZAF, the PET nanocomposites obtained a V-0 grade in vertical combustion test and its LOI value increased from 24.2 vol% to 32.1 vol%. Moreover, the peak heat release and carbon monoxide production decreased by 46.6% and 50.6%, respectively. This was because the phosphonic acid fragments and pyridine ring compounds produced by the PZAF pyrolysis encouraged the development of a robust char layer. Meanwhile, the •PO radicals generated by the pyrolysis of PZAF could capture free radicals in the gas phase, ultimately ending the chain reaction of combustion. Also, mechanical properties of the PET nanocomposites were noticeably enhanced by the addition of 3 or 5 wt% PZAF.","PeriodicalId":12932,"journal":{"name":"High Performance Polymers","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44287825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advances in the application of named reactions in polymer synthesis 命名反应在聚合物合成中的应用进展

IF 2.1 4区化学

High Performance Polymers Pub Date : 2022-12-13 DOI: 10.1177/09540083221143691

Dawei Lu, Xudong Zou, Chaofan Li

引用次数: 1

Influence of sulfonated SBA - 15 on fuel cell performance of sulfonated polysulfone electrolyte membranes 磺化SBA-15对磺化聚砜电解质膜燃料电池性能的影响

IF 2.1 4区化学

High Performance Polymers Pub Date : 2022-12-06 DOI: 10.1177/09540083221144257

P. V

{"title":"Influence of sulfonated SBA - 15 on fuel cell performance of sulfonated polysulfone electrolyte membranes","authors":"P. V","doi":"10.1177/09540083221144257","DOIUrl":"https://doi.org/10.1177/09540083221144257","url":null,"abstract":"The prepared mesoporous SBA-15 (Santa Barbara Amorphous-15) was sulfonated and used as filler for the preparation of sulfonated polysulfone based composite electrolyte membranes. The SBA-15 and polysulfone were sulfonated using 3-mercaptopropyl trimethoxysilane and trimethylsilyl chlorosulfonate, respectively. The different weight percentages (1, 3, and 5 wt%) of sulfonated SBA-15 (SSBA-15) were used to prepare composite electrolyte membranes. Water uptake, ion exchange capacity, swelling ratio and proton conductivity of the composite membranes were studied for assessing the suitability of the electrolyte membranes for use in fuel cells. Characterization techniques such as FT-IR, XRD, SEM, TEM and Brunauer–Emmett– Teller were used to study the physico-chemical properties of the electrolyte membranes. TEM and BET analysis showed that SBA -15 retained its mesoporous structure even after sulfonation process. The prepared membranes were then tested in an in-house built single-cell fuel cell using hydrogen as fuel and oxygen as the oxidant. The fuel cell study showed that the presence of Sulfonated SBA-15 in the polymer matrix provided additional ion exchange sites and retained water for proton transfer which resulted in higher power density of 815 mW/cm2 with SPSU + 3% SSBA-15 membrane as compared with Nafion 117®.","PeriodicalId":12932,"journal":{"name":"High Performance Polymers","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49656502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical and thermal properties of fully green composites from vanillin-based benzoxazine and silane surface modified chopped basalt fibers 香草基苯并恶嗪和硅烷表面改性短切玄武岩纤维的全绿色复合材料的力学和热性能

IF 2.1 4区化学

High Performance Polymers Pub Date : 2022-11-28 DOI: 10.1177/09540083221143688

M. Derradji, Karim Khiari, Oussama Mehelli, S. Abdous, Abdelmalek Habes, Noureddine Ramdani, Abdeljalil Zegaoui, Wen-ben Liu, A. Daham

{"title":"Mechanical and thermal properties of fully green composites from vanillin-based benzoxazine and silane surface modified chopped basalt fibers","authors":"M. Derradji, Karim Khiari, Oussama Mehelli, S. Abdous, Abdelmalek Habes, Noureddine Ramdani, Abdeljalil Zegaoui, Wen-ben Liu, A. Daham","doi":"10.1177/09540083221143688","DOIUrl":"https://doi.org/10.1177/09540083221143688","url":null,"abstract":"By following the rules of green chemistry, a novel composite is developed from a renewable and ecofriendly resource, namely the vanillin. The latter was used as a phenolic precursor for the microwave synthesis of a bio-based benzoxazine resin (Va-BZ). Afterwards, high performance green composites were developed by reinforcing the Va-BZ with various amounts of chopped silane surface modified basalt fibers (BFs). The chemical structure of the Va-BZ monomers was confirmed by 1H NMR and FTIR spectroscopy. The grafting of the silane moiety on the BFs surface was assessed by FTIR and TGA analyses. The autocatalytic ring opening polymerization of the Va-BZ monomers was confirmed by DSC analysis. The mechanical performances of the developed green composites were studied by flexural and tensile investigations. The findings suggested that the maximum amount of 20 wt. BFs afforded the best results, with flexural and tensile strengths of 447 and 460 MPa, respectively. The SEM was used to study the fractured tensile surfaces and elucidated the toughening mechanism. Meanwhile, the TGA showed that the introduction of the BFs markedly improved the thermal stability of the benzoxazine matrix. Finally, the gamma rays shielding effectiveness was studied and revealed the highly benefic role of the BFs. For instance, a 1 cm thick Va-BZ polymer only showed a 6% gamma rays screening ratio, the latter was improved to 18.4% for the composite made of 20 wt.% of treated BFs. Overall, this study confirmed that greener approaches can also result in high performance composite satisfying the needs of exigent applications.","PeriodicalId":12932,"journal":{"name":"High Performance Polymers","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44687244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Effect of 3-methoxysalicylaldehyde on transparency and mechanical properties of EP modified with aminopyridine-based DOPO derivative 3-甲氧基水杨醛对氨基吡啶基DOPO衍生物改性EP透明度和力学性能的影响

IF 2.1 4区化学

High Performance Polymers Pub Date : 2022-11-24 DOI: 10.1177/09540083221142758

Rui Chen, Bao Dongmei, Jiaye Jiang, Chuanbo Sun, Han Chen, M. Zhang

引用次数: 0

The evaluation of an inorganic-organic poly(carborane-siloxane-arylacetylene) hybrid resin system 无机-有机聚碳硼烷-硅氧烷-芳基乙炔杂化树脂体系的评价

IF 2.1 4区化学

High Performance Polymers Pub Date : 2022-11-17 DOI: 10.1177/09540083221140015

W. Monzel, Kyle Berglund, M. Kolel-Veetil, D. Simone, T. Gibson

{"title":"The evaluation of an inorganic-organic poly(carborane-siloxane-arylacetylene) hybrid resin system","authors":"W. Monzel, Kyle Berglund, M. Kolel-Veetil, D. Simone, T. Gibson","doi":"10.1177/09540083221140015","DOIUrl":"https://doi.org/10.1177/09540083221140015","url":null,"abstract":"The realization of aerospace vehicle technologies demanding extreme service conditions is facilitated by the development of materials with greater oxidative stability at high temperatures. Thermal performance of polymer composites can be increased by incorporating a hybrid (organic-inorganic) resin as a thermal barrier coating. One such resin system, meta-poly (carborane-siloxane-arylacetylene) (m-PCSAA), developed by the U.S. Naval Research Laboratory, shows potential for such application and is further investigated in this work. The resin has a low viscosity (0.1 Pa s) with large processing window (2.5 h) from 100°C to 230°C. These processing characteristics are advantageous for infusion processes or the inclusion of fillers for coating applications. Curing was accomplished in two stages, corresponding to two exothermic reactions. After the first curing stage, the resin exhibits elastomeric behavior, and after the second curing stage is rigid with a high glass transition temperature (∼330°C). The materials exhibited high char yields (89%) in air at 1000°C and may be useful in space or for attritable technology. No cracks were observed during long-term service at 288°C, but significant degradation and cracking were observed after aging at 316°C. The materials exhibited high coefficients of thermal expansion; 186.9 and 168.6 μm/(m∙°C) after first and second curing stage respectively. Similar to epoxies and polyimides, the resin acquired up to 3% moisture at 70°C and 85% relative humidity.","PeriodicalId":12932,"journal":{"name":"High Performance Polymers","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41389294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and compression mechanical properties of carbon fiber/epoxy nanoparticle composites 碳纤维/环氧纳米粒子复合材料的制备及其压缩力学性能

IF 2.1 4区化学

High Performance Polymers Pub Date : 2022-11-17 DOI: 10.1177/09540083221140755

X. Zhong, Lian-Ping Zhang, J. Bao, Weidong Li, Hansong Liu, B. Dong

引用次数: 0

4D printing light-/thermo-responsive shape memory composites based on thermoplastic polyurethane/polylactic acid/polyaniline blends 基于热塑性聚氨酯/聚乳酸/聚苯胺共混物的4D打印光/热响应形状记忆复合材料

IF 2.1 4区化学

High Performance Polymers Pub Date : 2022-11-04 DOI: 10.1177/09540083221135499

Yanmei Wang, Yanen Wang, Minyan Liu, Q. Wei, B. Du

{"title":"4D printing light-/thermo-responsive shape memory composites based on thermoplastic polyurethane/polylactic acid/polyaniline blends","authors":"Yanmei Wang, Yanen Wang, Minyan Liu, Q. Wei, B. Du","doi":"10.1177/09540083221135499","DOIUrl":"https://doi.org/10.1177/09540083221135499","url":null,"abstract":"In this work, a series of polylactic acid/thermoplastic polyurethane/polyaniline (PLA/TPU/PANI) blends with different weight ratios were prepared by Fused deposition molding First, six groups of PLA/TPU (U9A1/U8A2/U7A3/U6A4/U5A5/U4A6) and three groups of PLA/TPU/PANI (821/823/825) with different ratios were fabricated by melt blending. Then, the effects of different filament forming and printing process parameters on print resolution and quality were investigated. Next, printed samples were characterized by Fourier transform infrared (FTIR), Thermogravimetric analysis (TGA), Scanning electron microscopy (SEM) and mechanical experiments. The results of FTIR and TGA showed no chemical reaction between different components, and uniform distribution of the material was observed in the SEM. The tensile and compressive curves of the samples showed an inverted U-shape. Finally, the shape-memory property was evaluated by differential scanning calorimetry. For PLA/TPU blends, U8A2 had the best shape memory capability ( R r = 80.8% and R f = 100%). Based on the excellent shape memory performance of PLA/TPU, the addition of PANI can introduce a light-actuated mechanism to form a binary-driven shape memory material. The composite materials prepared in this work can be applied to tissue engineering scaffolds, medical devices, soft robots and so on. Graphical Abstract","PeriodicalId":12932,"journal":{"name":"High Performance Polymers","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45268370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Fabrication, mechanical and electrical properties of polyimide films cured at low-temperature assisted by microwave radiation 微波辅助低温固化聚酰亚胺薄膜的制备及其力学和电学性能

IF 2.1 4区化学

High Performance Polymers Pub Date : 2022-11-01 DOI: 10.1177/09540083221100366

K. Tao, Fei Qin, Yahui Li, Shuai Zhang, Shihui Han, Guangming Liu, Jun Wang, Junchang Shen, Zailin Yang, Yi Tang, Gaohui Sun

{"title":"Fabrication, mechanical and electrical properties of polyimide films cured at low-temperature assisted by microwave radiation","authors":"K. Tao, Fei Qin, Yahui Li, Shuai Zhang, Shihui Han, Guangming Liu, Jun Wang, Junchang Shen, Zailin Yang, Yi Tang, Gaohui Sun","doi":"10.1177/09540083221100366","DOIUrl":"https://doi.org/10.1177/09540083221100366","url":null,"abstract":"Polyimide (PI) films with excellent mechanical and electrical properties were produced at a low temperature assisted by microwave. Depending on the reciprocating movement of dipole molecules excited by microwave, even though under a low temperature, the rotation and conformational changes of functional groups could also be promoted. Thus, reaction between N-H bond and -OH in carboxyl which could realize dehydration and cyclization of polyamic acid proceeded normally. Results revealed that the combination between ambient temperature only at 70°C and microwave power at 2000 W or higher could also produce PI films with imidization degree of 100%. For PI-2000W, compared with traditional PI film (PI-300°C) that generated only at temperature of 300°C, even though on the basis of no any change in molecular structure and addition of filler, the tensile strength, elastic modulus, crystallinity, and apparent density increased by about 21%, 51%, 37%, and 5%, respectively. For electrical properties, conductivity enhanced by one to two orders of magnitude comparing with PI-300°C. Results indicated that while keeping the original molecular structure of PI films unchanged, this work provided a new and effective method to assist the enhancement in mechanical and electrical properties of PI films.","PeriodicalId":12932,"journal":{"name":"High Performance Polymers","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46455199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1