International Polymer Processing最新文献_第4页

Tensile properties of sandwich-designed carbon fiber filled PLA prepared via multi-material additive layered manufacturing and post-annealing treatment 多层材料增材和后退火处理制备的三明治设计碳纤维填充聚乳酸的拉伸性能

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-07-01 DOI: 10.1515/ipp-2022-4283

Zhaogui Wang, Xiuzeng Yin, Lihan Wang

{"title":"Tensile properties of sandwich-designed carbon fiber filled PLA prepared via multi-material additive layered manufacturing and post-annealing treatment","authors":"Zhaogui Wang, Xiuzeng Yin, Lihan Wang","doi":"10.1515/ipp-2022-4283","DOIUrl":"https://doi.org/10.1515/ipp-2022-4283","url":null,"abstract":"Abstract Polylactic Acid (PLA) experiences widely spread applications in Fused Filament Fabrication (FFF) owing to its relatively high stiffness, strength, and environmentally friendly biodegradability. Reinforcing inclusions like short carbon fibers are introduced to virgin PLA feedstock aiming to improve the mechanical performance of FFF-made products. Nevertheless, the rigid fibers significantly reduce the ductility of the overall fabricated parts. This study prepares sandwich specimens with PLA as core and its 10 wt% chopped carbon fiber reinforced composites (i.e., CF/PLA) as shell via a low-cost FFF-based multi-material additive layered manufacturing method. The sandwich specimen has three layers, which are changed according to different material volumes, which is able to design the local strength and toughness performances of a printed part. Tensile properties of these sandwich samples printed in the different volumetric rates of virgin PLA constituents are measured. It is found that the strength of sandwich specimens with 20% vol of PLA reduces noticeably as compared to the full CF/PLA specimens. The 80% vol specimens exhibit a competitive strength as compared to the 40% and 60% vol specimens, while its toughness increases notably as compared to the other cases. Finite element simulations of the layered manufacturing process show that the thermal residual stresses of 20% vol sandwich accumulates most significantly. We also explore the effects of thermal annealing on the prepared sandwiches. Experimental results indicated that the post-annealing process improved the strength and stiffness of the sandwich specimens, while enhancing the stability of the mechanical properties of the FFF printed sandwich.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"343 - 361"},"PeriodicalIF":1.3,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45131129","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}

引用次数: 0

Investigation of erosion wear performance and mechanism of mold materials 模具材料冲蚀磨损性能及机理研究

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-06-14 DOI: 10.1515/ipp-2022-0014

B. Jiang, M. Zhai

引用次数: 0

Effects of polymeric microcapsules on self-healing composites reinforced with carbon fibers: a comparative study 聚合物微胶囊对碳纤维增强自修复复合材料的影响：比较研究

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-06-14 DOI: 10.1515/ipp-2022-4320

N. Veeramani, Raja Samikannu, A. Deshpande, Sheril Varghese, V. Moses

{"title":"Effects of polymeric microcapsules on self-healing composites reinforced with carbon fibers: a comparative study","authors":"N. Veeramani, Raja Samikannu, A. Deshpande, Sheril Varghese, V. Moses","doi":"10.1515/ipp-2022-4320","DOIUrl":"https://doi.org/10.1515/ipp-2022-4320","url":null,"abstract":"Abstract Three different microcapsules, namely dicyclopentadiene (DCPD)-urea formaldehyde (UF) based single-walled microcapsules, DCPD-UF-Siloxane (DCPD-UF-Si) based double-walled microcapsules and DCPD-Carbon nanotubes-UF based dual-core microcapsules were synthesized, and their corresponding self-healing composites were prepared. This paper mainly focuses on the synthesis procedure of various microcapsules and a comparative study on the effect of microcapsules over the final composite properties. The core content of the microcapsules was measured and compared with theoretical calculations. DSC & TGA analyses have shown that the novel microcapsules (DCPD-UF-Si, DCPD-CNT-UF) and their composites have better thermal stability compared to DCPD-UF microcapsules. Epoxy-carbon fiber (2 wt.%) composite specimens with three different microcapsules were tested for surface morphology, mechanical, thermal and electrical properties. SEM analysis has shown that the microcapsules have a rough outer surface and smooth inner surface. The average diameter and shell thickness of the microcapsules were measured for all types of microcapsules. Addition of double-walled and dual-core microcapsules has reduced the glass transition temperature of the composites by 10 °C. Also, SHC with DCPD-UF-Si and DCPD-CNT-UF microcapsules have shown better thermal stability (300 °C) compared to DCPD-UF microcapsules (220 °C). The incorporation of CNT based microcapsules inside the composite has also improved the electrical conductivity by 2.2 times, without compromising on self-healing efficiency (78 %). Therefore, these novel microcapsules can be potential candidates for making multifunctional polymer composites for aerospace, windmills and automotive applications.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43102636","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}

引用次数: 0

Stereocomplex formation of a poly(D-lactide)/poly(L-lactide) blend on a technical scale 聚D-丙交酯/聚L-丙交酯共混物的立体复合物在技术规模上的形成

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-06-14 DOI: 10.1515/ipp-2022-4296

Boris Marx, Lars Bostan, A. Herrmann, E. Schmidt, M. M. Murshed

引用次数: 1

Improving the rheology of linear low-density polyethylene (LLDPE) and processability of blown film extrusion using a new binary processing aid 使用新型二元加工助剂改善线性低密度聚乙烯（LLDPE）的流变性和吹塑薄膜挤出的可加工性

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-06-13 DOI: 10.1515/ipp-2022-4309

Sarah Ramezan-Nejad, S. Mohamadi, N. Sharifi-Sanjani

{"title":"Improving the rheology of linear low-density polyethylene (LLDPE) and processability of blown film extrusion using a new binary processing aid","authors":"Sarah Ramezan-Nejad, S. Mohamadi, N. Sharifi-Sanjani","doi":"10.1515/ipp-2022-4309","DOIUrl":"https://doi.org/10.1515/ipp-2022-4309","url":null,"abstract":"Abstract To improve the processability of LLDPE, a binary processing aid composed of polyethylene glycol (PEG) and hydrocalumite was designed. Hydrocalumite containing HPO32− was successfully synthesized with co-precipitation of calcium and aluminum hydroxide in the presence of phosphorous acid. Scanning Electron Microscopy (SEM), Fourier-transform infrared (FTIR) spectroscopy, Thermogravimetric analyses (TGA) and Ion chromatography were utilized for the characterization of the synthesized hydrocalumite. SEM images showed the layered structure. Ion Chromatography demonstrated the molar ratio of Ca2+/Al3+ was 2:1.3 as an interlayer ion. The influence of PEG/hydrocalumite with the different ratios as a processing aid on the rheological properties of LLDPE was investigated by capillary rheometry. The results obtained showed that PEG/hydrocalumite processing aid with a ratio of 1:3 exhibited the best effect on the reduction of critical stress due to the best coverage of the extruder surface. The measurement of processing parameters in the blown film extruder revealed that hydrocalumite interacted with metallic oxides, created a slippery film layer on the die wall. This leads to a decrease in the die pressure and power consumption by 11% and 21%, respectively. SEM analysis confirmed a delay in Sharkskin instability at a higher shear rate.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"310 - 321"},"PeriodicalIF":1.3,"publicationDate":"2023-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44478293","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}

引用次数: 0

Molecular design of soluble poly(amide-imide) with high char yield for flame retardant epoxy resin 水溶性高炭产率聚酰胺-亚胺阻燃环氧树脂的分子设计

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-06-13 DOI: 10.1515/ipp-2023-4381

Yanbin Wang, Weiwei Zhang, Changlong Zhuang, Shengang Xu

{"title":"Molecular design of soluble poly(amide-imide) with high char yield for flame retardant epoxy resin","authors":"Yanbin Wang, Weiwei Zhang, Changlong Zhuang, Shengang Xu","doi":"10.1515/ipp-2023-4381","DOIUrl":"https://doi.org/10.1515/ipp-2023-4381","url":null,"abstract":"Abstract In this study, a noncoplanar diimide diacid monomer (DIDA) was synthesized by direct condensation of trimellitic anhydride (TMA) with m-tolidine. The noncoplanar unit was incorporated into poly(amide-imide)s (PAIs) main chain by Yamazaki-Higashi phosphorylation of DIDA with various aromatic diamines. Encouragingly, all of the PAIs show good solubility in some common solvents such as N,N-Dimethylacetamide (DMAc), N-methyl-2-pyrrolidinone (NMP), and m-cresol. In addition, the soluble PAIs show good optical transmittances of beyond 85 % at 500 nm due to the decreased crystallization ability. On the other hand, PAIs possess good mechanical properties with tensile strengths of 72–90 MPa and tensile moduli beyond 2 GPa. Meanwhile, the designed PAIs also exhibit excellent thermal properties: their glass transition temperatures (Tg) range from 278 to 314 °C, initial decomposition temperatures (5 % weight loss temperatures, T5wt%) are beyond 470 °C, coefficients of thermal expansion (CTE) are below 10 ppm/°C. The excellent mechanical and thermal properties are due to the strengthened hydrogen bonding interaction among the amide groups. Therefore, it is believed that incorporating noncoplanar unit and amide group into the polymer main chain at the same time can simultaneously improve processability, optical transparency, mechanical and thermal properties. Furthermore, it is worth noting that the char of PAI at 800 °C is as high as 72.5 %, which is one of the highest known values. When PAI was incorporated into epoxy resin, the blend passed UL94 V-0 rating due to the high charring capability of PAI.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48565957","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}

引用次数: 0

Effect of stacking sequence and thickness variation on the thermo-mechanical properties of flax-kenaf laminated biocomposites and prediction of the optimal configuration using a decision-making framework 铺层顺序和厚度变化对亚麻-红麻层合生物复合材料热力学性能的影响及基于决策框架的最佳构型预测

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-06-13 DOI: 10.1515/ipp-2023-4341

S Kumar, S. Bhowmik, D. Zindani

{"title":"Effect of stacking sequence and thickness variation on the thermo-mechanical properties of flax-kenaf laminated biocomposites and prediction of the optimal configuration using a decision-making framework","authors":"S Kumar, S. Bhowmik, D. Zindani","doi":"10.1515/ipp-2023-4341","DOIUrl":"https://doi.org/10.1515/ipp-2023-4341","url":null,"abstract":"Abstract The use of naturally derived eco-friendly biocomposites became more popular due to growing environmental concerns and hunt for sustainable materials. Biocomposites can reduce the residual waste and carbon emission to the environment during their lifecycle. The present study aims to develop biocomposites by reinforcing flax fiber (F) and kenaf fiber (K) laminates with bio-epoxy matrix at four different arrangements (FFF, FKF, KFK, and KKK). The biocomposite samples were fabricated with three laminated thicknesses (3 mm, 4 mm and 5 mm) and the thermo-mechanical performance was investigated. The results showed that FFF biocomposites recorded higher tensile, flexural, and interfacial properties with lower density and absorption of water compared to KKK biocomposites due to higher cylindrical lumen diameter of flax laminates. The hybridization of flax with kenaf fiber at different stacking sequences provided greater strength, modulus, toughness, stiffness, thermal stability and degradation behaviour due to greater interfacial interaction between laminated fiber and bio-epoxy. The FKF biocomposites showed maximum impact strength (52.96 kJ/m2), tensile strength (110.21 MPa), and compressive strength (139.64 MPa) at 5 mm laminated thickness while, flexural (158.67 MPa) and shear strength (39.45 MPa) were maximum at 4 mm thickness with the highest degradation temperature (336 °C). The optimal biocomposite configuration has been identified through employability of a novel decision-making framework encompassing interval-valued intuitionistic fuzzy sets, TOmada de DecisaoInterativaMulticriterio (TODIM) and Schweizer–Sklar operations. The inclusive evaluation with regard to the applied framework has revealed that FKF and KFK biocomposites with 4 mm thickness (Lam5 and Lam8) configuration to have the optimal configuration. On the other hand, Lam 10, i.e., KKK_3 mm turned out to be inferior to all the considered biocomposite configurations.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"404 - 423"},"PeriodicalIF":1.3,"publicationDate":"2023-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48817690","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}

引用次数: 1

Mechanical and dielectric properties of Cissus Quadrangularis fiber-reinforced epoxy/TiB2 hybrid composites 四角草纤维增强环氧树脂/TiB2杂化复合材料的力学和介电性能

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-05-31 DOI: 10.1515/ipp-2022-4321

V. Mani, Kumaresan Krishnaswamy, A. Felix Sahayaraj, Tamilselvan Manickam

引用次数: 3

Vulcanization kinetics and mechanical properties of filled ethylene-vinyl acetate copolymer rubber composites 填充乙烯-醋酸乙烯共聚物橡胶复合材料的硫化动力学和力学性能

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-05-26 DOI: 10.1515/ipp-2023-4365

C. Xiao, Qingshan Yang, Kefu Shao, Yongjiang Li, Songhan Wan, Xianru He

{"title":"Vulcanization kinetics and mechanical properties of filled ethylene-vinyl acetate copolymer rubber composites","authors":"C. Xiao, Qingshan Yang, Kefu Shao, Yongjiang Li, Songhan Wan, Xianru He","doi":"10.1515/ipp-2023-4365","DOIUrl":"https://doi.org/10.1515/ipp-2023-4365","url":null,"abstract":"Abstract The vulcanization reaction of ethylene vinyl acetate copolymer (EVM) rubber is fast, resulting in poor processing safety. EVM is often filled with flame-retardant fillers as insulating or sheathing material for wires and cables. Herein, the effects of flame-retardant magnesium hydroxide (Mg(OH)2), aluminum hydroxide (Al(OH)3) and of the traditional reinforcing fillers carbon black (CB) and silicon dioxide (SiO2) on the vulcanization kinetics of EVM were investigated. The vulcanization characteristics showed that the scorch time (T 10) of the unfilled EVM (KB), SiO2/EVM, Mg(OH)2/EVM, and Al(OH)3/EVM composites was about 1.75 min. T 10 of the CB/EVM composite was 2.22 min. Compared with KB, the activation energy (E a ) increased by about 15 kJ/mol for CB/EVM composites and by about 5 kJ/mol for SiO2/EVM, Mg(OH)2/EVM and Al(OH)3/EVM composites. The results indicate that CB delays the vulcanization time of EVM rubber, slows down the rate of vulcanization reaction and improves the safety of vulcanization. The addition of SiO2, Mg(OH)2 and Al(OH)3 has little effect on the vulcanization reaction. The mechanical properties show that CB/EVM is more uniformly vulcanized and has the best mechanical properties with a tensile strength of 17.61 MPa and elongation at break of 404.58 %. Mg(OH)2/EVM and Al(OH)3/EVM samples have prominent vulcanization non-uniformity resulting in poor mechanical properties.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44632175","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}

引用次数: 0

Design and manufacture of an additive manufacturing printer based on 3D melt electrospinning writing of polymer 基于聚合物三维熔融静电纺丝书写的增材制造打印机的设计与制造

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-05-10 DOI: 10.1515/ipp-2023-4352

B. Akhoundi, V. Modanloo, A. Mashayekhi

{"title":"Design and manufacture of an additive manufacturing printer based on 3D melt electrospinning writing of polymer","authors":"B. Akhoundi, V. Modanloo, A. Mashayekhi","doi":"10.1515/ipp-2023-4352","DOIUrl":"https://doi.org/10.1515/ipp-2023-4352","url":null,"abstract":"Abstract Objectives Electrospinning is one of the most well-known approaches to producing polymer nanofibers from a polymer solution by applying a potential difference (voltage) between the spinner and the collector, which is used in various industries such as medicine and military. This method has some significant restrictions, like low process efficiency due to the evaporation of the solvent, remaining solvent on the fibers, which are sometimes toxic, and inability to control the geometry of the produced fibers. On the other hand, preparing some solvents used in the electrospinning of polymer solutions is costly. Polymer melt electrospinning writing is a replacement for this type of electrospinning, which can be mentioned in terms of economy, efficiency, and production of solvent-free fibers. Therefore, in this research, a melt polymer electrospinning device was designed and manufactured according to existing extrusion-based additive manufacturing (AM) devices (3D printer). Methods Changes in an extrusion-based 3D printer to convert it into a writing electrospinning device experimentally. Results PLA and PCL fibers with diameters ranging from 8 to 84 μm were produced. The effect of process variables on the produced fibers’ diameter was investigated: Applied potential difference between the nozzle and the substrate: As its increases, the fiber diameter decreases. Increasing temperature: As its increases, the fiber diameter decreases. Distance between the nozzle and the substrate: As its increases, the fiber diameter increases. Flow rate: As its increases, the fiber diameter increases. Conclusions By presenting a 3D printer-electrospinning device, it is possible to control the fiber’s diameter and the 3D geometry in the 3D printing-electrospinning process.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"424 - 433"},"PeriodicalIF":1.3,"publicationDate":"2023-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42701715","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}

引用次数: 1