International Polymer Processing最新文献_第7页

Influence of mold cavity thickness on electrical, morphological and thermal properties of polypropylene/carbon micromoldings 模腔厚度对聚丙烯/碳微模电学、形态和热学性能的影响

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-01-30 DOI: 10.1515/ipp-2022-4288

Shengtai Zhou, Renze Jiang, Xue Lei, H. Zou, A. Hrymak

{"title":"Influence of mold cavity thickness on electrical, morphological and thermal properties of polypropylene/carbon micromoldings","authors":"Shengtai Zhou, Renze Jiang, Xue Lei, H. Zou, A. Hrymak","doi":"10.1515/ipp-2022-4288","DOIUrl":"https://doi.org/10.1515/ipp-2022-4288","url":null,"abstract":"Abstract In this work, a comparative study on the electrical conductivity (σ) and thermal properties of polypropylene (PP)/carbon microparts with different part thickness (namely, 0.85 and 0.50 mm) is reported. Two different types of carbon filler (i.e., CNT and CB) were adopted to study the efficacy of different carbon fillers in improving the σ of PP/carbon microparts. In general, the σ of 0.85 mm thickness microparts were higher than the 0.50 mm thickness microparts, regardless of the carbon filler type and testing directions. This suggested that higher shearing conditions that prevailed in the microinjection molding (μIM) process were unfavorable for the formation of intact conductive pathways in corresponding moldings, albeit the distribution of carbon fillers turned better with increasing shear rates, as confirmed by morphology observations. Differential scanning calorimetry results showed that prior thermomechanical histories (including melt blending and μIM) experienced by the polymer melts had an influence on the thermal behavior of subsequent moldings. Also, there existed a strong shear flow-induced crystallization of polymer chains during μIM because the crystallinity of microparts was higher than that of feed materials.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"214 - 224"},"PeriodicalIF":1.3,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48056184","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

Vibration damping properties of graphene nanoplatelets filled glass/carbon fiber hybrid composites 石墨烯纳米片填充玻璃/碳纤维混杂复合材料的减振性能

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-01-27 DOI: 10.1515/ipp-2022-4241

A. Erkliğ, Bashar Younus, N. Doğan, M. Alsaadi, M. Bulut, B. Sulaiman

{"title":"Vibration damping properties of graphene nanoplatelets filled glass/carbon fiber hybrid composites","authors":"A. Erkliğ, Bashar Younus, N. Doğan, M. Alsaadi, M. Bulut, B. Sulaiman","doi":"10.1515/ipp-2022-4241","DOIUrl":"https://doi.org/10.1515/ipp-2022-4241","url":null,"abstract":"Abstract The present study investigates the effect of carbon fiber hybridization and graphene nanoplatelets inclusion on the vibration damping properties of glass fiber reinforced polymer composites. The hand layup method was utilized with hot press molding in hybrid/non-hybrid composite plate production. A total of sixteen laminates, eight containing pure glass/epoxy and pure carbon/epoxy, and the remainder containing glass/carbon, were stacked in four different arrays and impregnated with an epoxy matrix to provide a hybrid/non-hybrid configuration. In the first hybrid configuration, the glass fiber fabric is on the outer surface and the carbon fiber fabric is on the inside of the composite plate; in the second configuration, the opposite of this sequence was used. Graphene Nanoplatelets (GNPs) were added into the epoxy resin in different weight fractions (0, 0.1, 0.25, and 0.5 wt%). Experimental modal analysis was performed to evaluate the natural frequency and damping ratios of the GNPs modified/unmodified test samples. According to the results obtained, carbon fiber hybridization not only increased the natural frequency but also caused a decrease in the damping ratio of the glass fiber reinforced composite material. On the other hand, incorporating 0.5% by weight of GNPs into the epoxy matrix improved damping ratios by approximately 42.1, 51.6, 16.7 and 17.2% for the G05, GC05, CG05 and C05 samples, respectively, compared to the pure samples. Also, a decrease in natural frequency and loss storage values were observed at high GNPs content.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"145 - 153"},"PeriodicalIF":1.3,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45462356","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

Thermal, mechanical and dielectric properties of glass fiber reinforced epoxy-lanthanum manganite nanocomposites 玻璃纤维增强环氧-锰酸镧纳米复合材料的热、力学和介电性能

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-01-18 DOI: 10.1515/ipp-2022-0009

Preseetha Paul Chiriyankandath, S. Varghese

引用次数: 0

Three-dimensional simulation of capillary rheometry for an estimation of extensional viscosity 用于估算拉伸粘度的毛细管流变仪的三维模拟

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-01-16 DOI: 10.1515/ipp-2022-4280

H. Tseng

引用次数: 4

Numerical visualization of extensional flows in injection molding of polymer melts 聚合物熔体注射成型中拉伸流动的数值可视化

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-01-11 DOI: 10.1515/ipp-2022-4316

H. Tseng

引用次数: 6

Optical and temperature dependent electrical properties of poly (vinyl chloride)/copper alumina nanocomposites for optoelectronic devices 光电器件用聚氯乙烯/铜氧化铝纳米复合材料的光学和温度相关电学特性

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2022-12-26 DOI: 10.1515/ipp-2022-4270

S. Suvarna, A. Sebastian, Furhan, M. T. Ramesan

{"title":"Optical and temperature dependent electrical properties of poly (vinyl chloride)/copper alumina nanocomposites for optoelectronic devices","authors":"S. Suvarna, A. Sebastian, Furhan, M. T. Ramesan","doi":"10.1515/ipp-2022-4270","DOIUrl":"https://doi.org/10.1515/ipp-2022-4270","url":null,"abstract":"Abstract The practical applications of poly (vinyl chloride) have been constrained due to its poor thermal stability, low dielectric constant and inability to shield against ultraviolet (UV) radiation. In this study, we tried to improve the optical properties, thermal stability, temperature-dependent electrical conductivity and dielectric constant using copper alumina (Cu–Al2O3) nanoparticles reinforced poly (vinyl chloride) (PVC). Optical absorption measured with an ultraviolet-visible (UV-visible) spectrometer emphasises the blueshift in absorption edges and decreasing bandgap energies of PVC/Cu–Al2O3 nanocomposites compared to PVC. The presence of Cu–Al2O3 in PVC and its interaction with the polymer were confirmed by FTIR spectroscopy. Thermogravimetric analysis (TGA) demonstrates that nanocomposites have higher thermal stability than PVC, and that thermal stability increases with filler loading. Scanning electron microscopy (SEM) indicates the homogeneous dispersion of nanosized Cu–Al2O3 in the polymer matrix. The activation energy determined by the Arrhenius equation revealed that AC conductivity increases with the addition of nanoparticles up to a specific loading. The dielectric constant increases as a function of temperature and decreases with frequency. The magnitude of AC conductivity and dielectric constant were highest for 7 wt% loaded nanocomposites. The dielectric constant predicted by the Bruggeman and Maxwell-Garnet models were in good agreement with the experimental permittivity. The semiconducting nature of nanocomposites was investigated by impedance analysis. The semi-circular nature of Cole-Cole plots manifests the combination of parallel capacitance with low bulk resistance. The enhanced optical, thermal, electrical and dielectric properties of PVC/Cu–Al2O3 nanocomposites can be utilized in fabricating optoelectronic devices with excellent charge-storing ability.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"154 - 166"},"PeriodicalIF":1.3,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42303046","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

Influence of process parameters of a continuous final mixer on the properties of carbon black/rubber composites 连续混炼工艺参数对炭黑/橡胶复合材料性能的影响

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2022-12-15 DOI: 10.1515/ipp-2022-4265

Kongshuo Wang, Deshang Han, Xinxin Xiao, Luyin Wang, Guangzhi Niu, Shoufeng Zhang, Chuansheng Wang, H. Bian

{"title":"Influence of process parameters of a continuous final mixer on the properties of carbon black/rubber composites","authors":"Kongshuo Wang, Deshang Han, Xinxin Xiao, Luyin Wang, Guangzhi Niu, Shoufeng Zhang, Chuansheng Wang, H. Bian","doi":"10.1515/ipp-2022-4265","DOIUrl":"https://doi.org/10.1515/ipp-2022-4265","url":null,"abstract":"Abstract As the final stage of the mixing process, the final mixing has a profound impact on the properties of rubber compounds. The influence of the process parameters of a continuous final mixer on the properties of carbon black/rubber composites is studied. It is found that there are two factors affecting the performance of the composite: the rotating speed of the dual rotors and the temperature of the continuous final mixer. When the temperature is unchanged, the extruding temperature of the final-mixing rubber compound increases with increasing rotating speed, and the Mooney viscosity, T10, T90 and rolling resistance gradually decrease. The Payne effect decreases first and then increases, and the overall trend gradually decreases. When the rotating speed is constant, as the temperature of the continuous final mixer rises, the extruding temperature also rises, and the temperature difference between feeding and extruding increases. Mooney viscosity and tensile strength increase. The Payne effect is more significant. T10, T90 and rolling resistance gradually decrease. The M300 of a vulcanized sample shows the following laws: When the control temperature is low, the influence of rotational speed is small, the fluctuation range is small, and has a steady rising trend; however, when the temperature is higher, M300 fluctuates greatly under the influence of rotational speed. The optimal process parameters of the rubber continuous final mixer are determined: the double rotor speed is 30RPM, and the temperature control temperature is 60–70 °C.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"133 - 144"},"PeriodicalIF":1.3,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66814074","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

Three-dimensional simulation of vortex growth within entry flow of a polymer melt 聚合物熔体入口流涡旋生长的三维模拟

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2022-12-06 DOI: 10.1515/ipp-2022-4277

H. Tseng

引用次数: 3

Comparison of fibre reorientation of short-and long-fibre reinforced polypropylene by injection molding with a rotating mold core 旋转型芯注射成型短纤维和长纤维增强聚丙烯纤维取向的比较

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2022-12-05 DOI: 10.1515/ipp-2022-4252

Philipp Land, T. Krumpholz, H. Heim

引用次数: 0

The impact of accelerated aging on the mechanical and thermal properties and VOC emission of polypropylene composites reinforced with glass fibers 加速老化对玻璃纤维增强聚丙烯复合材料力学性能、热性能及VOC排放的影响

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2022-12-05 DOI: 10.1515/ipp-2022-4268

A. Rüppel, Susanne Wolff, H. Heim

{"title":"The impact of accelerated aging on the mechanical and thermal properties and VOC emission of polypropylene composites reinforced with glass fibers","authors":"A. Rüppel, Susanne Wolff, H. Heim","doi":"10.1515/ipp-2022-4268","DOIUrl":"https://doi.org/10.1515/ipp-2022-4268","url":null,"abstract":"Abstract This paper presents the impact of accelerated aging on selected mechanical and thermal properties and VOC emission of polypropylene composites filled with glass fiber with different fiber contents. Due to their positive properties (good thermal and mechanical properties, low weight), glass fiber reinforced thermoplastics are becoming increasingly important. Fiber reinforced thermoplastics are mainly produced by injection molding and extrusion, whereby the extrusion compounding process is primarily used to prepare fiber-filled granulates while the injection molding process is used to manufacture products. In this study, short glass fiber reinforced thermoplastics (polypropylene) are produced on a twin screw extruder. Then, tensile test specimens are produced by injection molding. The glass fiber content is between 20 and 40 wt%. In order to investigate the long-term stability, the test specimens are artificially aged in accordance with ASTM 1980. The thermal, mechanical, and emission properties were evaluated by means of differential scanning calorimetry (DSC), tensile tests, and TDS-GC-MS analysis prior to and after accelerated aging. The objective of this study was to investigate the effects of thermal aging on crystallinity and mechanical properties and on VOC emission of glass fiber reinforced isotactic polypropylene.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"111 - 125"},"PeriodicalIF":1.3,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41720534","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