发布求助
文献互助 智能选刊 最新文献

Journal of Cellular Plastics最新文献

筛选
英文 中文
Experimental and numerical study of the polyurethane foaming process using high-pressure CO2 高压CO2发泡聚氨酯过程的实验与数值研究
IF 2.5 4区 工程技术
Journal of Cellular Plastics Pub Date : 2020-12-08 DOI: 10.1177/0021955X20974291
D. Hu, Chen Zhou, Tao Liu, Yichong Chen, Zhen Liu, Ling Zhao
{"title":"Experimental and numerical study of the polyurethane foaming process using high-pressure CO2","authors":"D. Hu, Chen Zhou, Tao Liu, Yichong Chen, Zhen Liu, Ling Zhao","doi":"10.1177/0021955X20974291","DOIUrl":"https://doi.org/10.1177/0021955X20974291","url":null,"abstract":"A simulation of simultaneous bubble nucleation and growth was performed for polyurethane/CO2 physical foaming process. The single-factor and comprehensive effects of viscoelastic properties, Henry’s constant, CO2 diffusion coefficient and surface tension on the cell morphology were numerically analyzed. The results show that the cell density of PU foam (N0) increases and its average cell diameter (Dv) reduces with increased Henry’s constant and slower gas diffusion. Both N0 and Dv reduces with the curing degree (α). In addition, the effects of α and foaming conditions on the cell structure were experimentally investigated. With an increase of α at foamable range, Dv decreases continuously and N0 increases first and then declines. With increasing saturation pressure and depressurization rate or decreasing temperature, N0 increases and Dv reduces. There is an intrinsic correlation between the simulated and experimental variables, and the results of the simulation and experiment are generally consistent.","PeriodicalId":15236,"journal":{"name":"Journal of Cellular Plastics","volume":"39 1","pages":"927 - 949"},"PeriodicalIF":2.5,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88233273","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: 4
Effect of extrudate swell on extrusion foam of polyethylene terephthalate 挤出物膨胀对聚对苯二甲酸乙二醇酯挤出泡沫的影响
IF 2.5 4区 工程技术
Journal of Cellular Plastics Pub Date : 2020-12-07 DOI: 10.1177/0021955X20973599
D. Tammaro, C. Walker, L. Lombardi, U. Trommsdorff
{"title":"Effect of extrudate swell on extrusion foam of polyethylene terephthalate","authors":"D. Tammaro, C. Walker, L. Lombardi, U. Trommsdorff","doi":"10.1177/0021955X20973599","DOIUrl":"https://doi.org/10.1177/0021955X20973599","url":null,"abstract":"The effect of extrudate swell on extrusion foam of thermoplastic polymers is presented using an experimental approach supported by a modelling of the phenomenon. Its understanding is fundamental in designing the geometry of a die for extrusion foam and to predict foaming. The extrudate swell is the swelling of a viscoelastic material due to a fast elastic recovery after being subjected to stresses. We show that there exists a link between the extrudate swell and foaming, performing experiments with simple and complex extrusion dies to measure the expansion ratio. It was found that the expansion ratio is anisotropic and the anisotropy in the expansion of the foam is due to the extrudate swell that affects strongly the final shape of the product and it cannot be neglected in standard application for extrusion foam. A simple heuristic model was developed to predict the extrudate swell from geometrical parameters and rheological characterization of the fluid. It was found that the foaming mechanism of polyethylene terephthalate, blown with cyclopentane, changes as function of extrudate swell and the lowest density foam is achieved using the die that has the bigger extrudate swell.","PeriodicalId":15236,"journal":{"name":"Journal of Cellular Plastics","volume":"64 1","pages":"911 - 925"},"PeriodicalIF":2.5,"publicationDate":"2020-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85042888","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: 13
Foaming behavior of the fluorinated ethylene propylene copolymer assisted with supercritical carbon dioxide 超临界二氧化碳辅助下氟化乙烯丙烯共聚物的发泡行为
IF 2.5 4区 工程技术
Journal of Cellular Plastics Pub Date : 2020-11-25 DOI: 10.1177/0021955X20964003
Ziyin Jiang, Yun-fei Zhang, Chang-jing Gong, Zhen Yao, A. Shukla, Kun Cao
{"title":"Foaming behavior of the fluorinated ethylene propylene copolymer assisted with supercritical carbon dioxide","authors":"Ziyin Jiang, Yun-fei Zhang, Chang-jing Gong, Zhen Yao, A. Shukla, Kun Cao","doi":"10.1177/0021955X20964003","DOIUrl":"https://doi.org/10.1177/0021955X20964003","url":null,"abstract":"Foaming behavior of the fluorinated ethylene propylene copolymer (FEP) and its composites assisted with supercritical carbon dioxide (scCO2) as the blowing agent were investigated. The batch foaming process was applied at temperature ranging from 250°C to 265°C and pressure ranging between 12 MPa and 24 MPa. The optimal foaming temperature and saturation pressure were obtained for both pure FEP and FEP composites with 1 wt% different-sized BaTiO3 as nucleating agent. The cell diameter of pure FEP foam ranging from 80–140 µm was observed while the cell diameter decreased to 20–40 µm after adding BaTiO3 particles. The cell density of foamed FEP with BaTiO3 increased significantly from 106 to 108 cells/cm3 and the expansion ratio ranged between 4.0 and 5.5. Moreover, a decrease in an abnormal phenomenon that expansion ratio for the pure FEP foam was observed as the saturation pressure increased. This unexpected phenomenon can be explained by the relationship between foaming and crystallization coupling processes.","PeriodicalId":15236,"journal":{"name":"Journal of Cellular Plastics","volume":"41 1","pages":"893 - 909"},"PeriodicalIF":2.5,"publicationDate":"2020-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77005556","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: 3
Synergetic effect of crystal nucleating agent and melt self-enhancement of isotactic polypropylene on its rheological and microcellular foaming properties 结晶成核剂和熔体自增强剂对等规聚丙烯流变性能和微孔发泡性能的协同作用
IF 2.5 4区 工程技术
Journal of Cellular Plastics Pub Date : 2020-11-13 DOI: 10.1177/0021955X20969553
Xiaoli Zhang, Xihuan Wang, Binbin Dong, G. Zheng, Jingbo Chen, Changyu Shen, Chul B. Park
{"title":"Synergetic effect of crystal nucleating agent and melt self-enhancement of isotactic polypropylene on its rheological and microcellular foaming properties","authors":"Xiaoli Zhang, Xihuan Wang, Binbin Dong, G. Zheng, Jingbo Chen, Changyu Shen, Chul B. Park","doi":"10.1177/0021955X20969553","DOIUrl":"https://doi.org/10.1177/0021955X20969553","url":null,"abstract":"Crystal nucleating agent Bis (3, 4- dimethylbenzylidene) sorbitol (DMDBS) was used to tune the melt strength and microcellular foaming properties of isotactic polypropylene (iPP) in this study. Rheological testing results reveal that the introduction of DMDBS could enhance the storage modulus and complex viscosity of iPP, obviously increase its crystallization onset temperature, compared to its counterparts without DMDBS. The addition of DMDBS could also significantly increase the cell nucleating ability of iPP, due to its large surface, cooperating with a thermal history control treatment. Quite fine microcellular iPP/DMDBS foams were fabricated with relatively small average cell sizes of nano to several micrometers, and cell densities up to 1011∼1012 cells/cm3, using the synergy effect of DMDBS and iPP’s melt self-enhancement. Under a comparatively low re-saturation pressure of 8 to 12 MPa, ideal microcellular foams could be generated, at a temperature zone of 158 to 162°C, which is slightly below to iPP’s original pellets nominal melting point.","PeriodicalId":15236,"journal":{"name":"Journal of Cellular Plastics","volume":"18 1","pages":"101 - 121"},"PeriodicalIF":2.5,"publicationDate":"2020-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83055262","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: 5
Patents 专利
IF 2.5 4区 工程技术
Journal of Cellular Plastics Pub Date : 2020-11-01 DOI: 10.1177/0021955X20961896
{"title":"Patents","authors":"","doi":"10.1177/0021955X20961896","DOIUrl":"https://doi.org/10.1177/0021955X20961896","url":null,"abstract":"","PeriodicalId":15236,"journal":{"name":"Journal of Cellular Plastics","volume":"141 1","pages":"561 - 610"},"PeriodicalIF":2.5,"publicationDate":"2020-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74866778","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
Quasistatic response of a shear-thickening foam: Microstructure evolution and infrared thermography 剪切增厚泡沫的准静态响应:微观结构演变和红外热成像
IF 2.5 4区 工程技术
Journal of Cellular Plastics Pub Date : 2020-10-13 DOI: 10.1177/0021955X20963989
KB Bhagavathula, JS Parcon, A. Azar, S. Ouellet, S. Satapathy, CR Dennison, JD Hogan
{"title":"Quasistatic response of a shear-thickening foam: Microstructure evolution and infrared thermography","authors":"KB Bhagavathula, JS Parcon, A. Azar, S. Ouellet, S. Satapathy, CR Dennison, JD Hogan","doi":"10.1177/0021955X20963989","DOIUrl":"https://doi.org/10.1177/0021955X20963989","url":null,"abstract":"In this work, the authors study the thermo-mechanical response of a dilatant polymeric foam in quasistatic tension and compression, focusing on the links between microstructure, mechanical response, and associated temperature rises in these materials. The authors study these links for a commercially-available shear-thickening foam, named D3O LITE D. Samples were tested under quasi-static conditions for a strain rate of 0.1 s−1 in tension and compression. Micro X-ray computed tomography (XCT) was used to study the evolution of microstructure (pore size and wall thickness) as a function of strain and this was achieved by developing MATLAB-based programs to analyze these microstructural features. The foam specimens were loaded until failure which allowed for the investigation of the elastic, inelastic, and failure regimes. From the XCT images, pore stretching and cell wall tearing are observed in tension, and buckling and pore collapse are observed in compression. These mechanisms are studied in-situ using an infrared thermal camera which record temperature profiles, and temperature measurements are linked back to stress-strain, and temperature-strain responses. For this material, the tensile yield stress was 0.57 ± 0.10 MPa and the elastic modulus was 5.47 ± 0.10 MPa respectively, at a yield strain of 0.10 ± 0.04. At the time of failure, the average temperature of the specimen was found to increase by ∼3.00°C and a local temperature increase of ∼8.00°C was observed in the failure region. In compression, the elastic collapse stress and elastic modulus were found to be 0.130 ± 0.016 MPa and 2.5 ± 0.2 MPa, respectively. The temperature increase in compression at ∼0.83 strain was ∼0.65°C. These results represent some of the first mechanical properties on shear-thickening foams in the literature, and the discoveries on the linkages between the microstructure and the mechanical properties in this study are important for researchers in materials design and modelling.","PeriodicalId":15236,"journal":{"name":"Journal of Cellular Plastics","volume":"139 1","pages":"863 - 892"},"PeriodicalIF":2.5,"publicationDate":"2020-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76348389","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: 4
Enhanced energy absorption characteristics of novel integrated hybrid honeycomb/polystyrene foam 新型蜂窝/聚苯乙烯复合材料增强吸能特性研究
IF 2.5 4区 工程技术
Journal of Cellular Plastics Pub Date : 2020-10-13 DOI: 10.1177/0021955X20965216
S. K. Bhudolia, Goram Gohel, K. Leong
{"title":"Enhanced energy absorption characteristics of novel integrated hybrid honeycomb/polystyrene foam","authors":"S. K. Bhudolia, Goram Gohel, K. Leong","doi":"10.1177/0021955X20965216","DOIUrl":"https://doi.org/10.1177/0021955X20965216","url":null,"abstract":"Expanded Polystyrene (EPS) is commonly used as an inner liner for a bicycle helmet due to its outstanding energy absorption characteristic and light-weight property. The current investigation presents a novel technique to manufacture hybrid EPS/honeycomb structure foam using an integrated manufacturing approach to further enhance the energy dissipation properties for improved safety against head injuries. Different foam designs were analysed under curb-stone impact tests and the failure mechanisms are deliberated. Integrated EPS-honeycomb hybrid liners have shown up to 20% higher energy absorption, with the additional energy being absorbed in associated densification of foam and the elastic buckling features of the honeycomb.","PeriodicalId":15236,"journal":{"name":"Journal of Cellular Plastics","volume":"12 1","pages":"839 - 848"},"PeriodicalIF":2.5,"publicationDate":"2020-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87580089","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: 11
Impact performance of innovative corrugated polystyrene foam for bicycle helmets 新型波纹聚苯乙烯泡沫自行车头盔的冲击性能
IF 2.5 4区 工程技术
Journal of Cellular Plastics Pub Date : 2020-10-13 DOI: 10.1177/0021955X20965215
S. K. Bhudolia, Goram Gohel, K. Leong
{"title":"Impact performance of innovative corrugated polystyrene foam for bicycle helmets","authors":"S. K. Bhudolia, Goram Gohel, K. Leong","doi":"10.1177/0021955X20965215","DOIUrl":"https://doi.org/10.1177/0021955X20965215","url":null,"abstract":"Expanded Polystyrene (EPS) is a common material used to manufacture the inner foam liner of a bicycle helmet due to its outstanding energy absorption characteristics and light-weight property. The current research presents a novel corrugated expanded polystyrene (EPS) foam design concept which is used to enhance the impact dissipation of bicycle helmets from the safety standpoint to reduce head injuries and make them lighter. The baseline comparison study under impact for different foam configurations is compared with a conventional EPS foam sample without corrugation. Corrugated foam designs under current investigation are 12.5–20% lighter and provide up to 10% higher energy absorption. The details of the novel manufacturing concept, CPSC 1203 helmet impact tests, high-speed camera study to understand the differences in the failure mechanisms are deliberated in this paper.","PeriodicalId":15236,"journal":{"name":"Journal of Cellular Plastics","volume":"57 1","pages":"849 - 862"},"PeriodicalIF":2.5,"publicationDate":"2020-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88426532","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: 5
Rigid bio-based wood/polyurethane foam composites expanded under confinement 刚性生物基木材/聚氨酯泡沫复合材料在约束下膨胀
IF 2.5 4区 工程技术
Journal of Cellular Plastics Pub Date : 2020-10-12 DOI: 10.1177/0021955X20964018
E. F. Kerche, R. Delucis, C. Petzhold, S. Amico
{"title":"Rigid bio-based wood/polyurethane foam composites expanded under confinement","authors":"E. F. Kerche, R. Delucis, C. Petzhold, S. Amico","doi":"10.1177/0021955X20964018","DOIUrl":"https://doi.org/10.1177/0021955X20964018","url":null,"abstract":"Rigid polyurethane biofoams (RPUF) were produced by single shot-method using a bio-based polyol and 10 wt% of pinewood particles. Two different confinement degrees were investigated (70% and 50% of the free-rising volume), along with a control group produced under free-rising. RPUF were studied using SEM images (to estimate average foam cell size and anisotropy index), mechanical testing (under compression and tension), apparent density, and thermal conductivity analysis. The results were statistically evaluated using ANOVA tests prior to means tests. The RPUF produced under confinement showed more rounded and homogeneous cell structures compared to those freely expanded. The filled RPUF produced under a confinement degree of 50% yielded very high compressive and tensile strengths, whereas thermal conductivity decreased with confinement.","PeriodicalId":15236,"journal":{"name":"Journal of Cellular Plastics","volume":"35 1","pages":"757 - 768"},"PeriodicalIF":2.5,"publicationDate":"2020-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83848158","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: 10
Thermal conductivity analysis of a new sub-micron sized polystyrene foam 新型亚微米级聚苯乙烯泡沫的热导率分析
IF 2.5 4区 工程技术
Journal of Cellular Plastics Pub Date : 2020-10-06 DOI: 10.1177/0021955X20943101
FA Almeida, H. Beyrichen, N. Dodamani, R. Caps, A. Müller, R. Oberhoffer
{"title":"Thermal conductivity analysis of a new sub-micron sized polystyrene foam","authors":"FA Almeida, H. Beyrichen, N. Dodamani, R. Caps, A. Müller, R. Oberhoffer","doi":"10.1177/0021955X20943101","DOIUrl":"https://doi.org/10.1177/0021955X20943101","url":null,"abstract":"New polystyrene (PS) foams with submicron pore sizes and open pore structure are introduced as potential cores for vacuum insulation panels (VIPs). Measurements of the thermal conductivity λ of the air-filled and evacuated PS foams, the influence of temperature T, opacifiers as well as gas pressure p on the thermal conductivity λ are presented. First results of the foam microstructures, as visualized by electron microscopy, confirm that pore sizes below 1 µm can be achieved. Thermal conductivity values of advanced samples in vacuum of about 7 mW/(m·K) were measured.","PeriodicalId":15236,"journal":{"name":"Journal of Cellular Plastics","volume":"416 1","pages":"493 - 515"},"PeriodicalIF":2.5,"publicationDate":"2020-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78779108","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: 5
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信