Journal of Cellular Plastics最新文献_第7页

Patents 专利

IF 2.5 4区工程技术

Journal of Cellular Plastics Pub Date : 2021-07-01 DOI: 10.1177/0021955X211019492

引用次数: 0

Application of computed tomography data–based modelling technique for polymeric low density foams, Part A: Model development 基于计算机断层扫描数据的聚合物低密度泡沫建模技术的应用，第一部分:模型开发

IF 2.5 4区工程技术

Journal of Cellular Plastics Pub Date : 2021-06-28 DOI: 10.1177/0021955X211028166

Anna Hössinger-Kalteis, M. Reiter, M. Jerabek, Z. Major

引用次数: 6

A machine learning approach to estimate the strain energy absorption in expanded polystyrene foams 一种估计膨胀聚苯乙烯泡沫应变能吸收的机器学习方法

IF 2.5 4区工程技术

Journal of Cellular Plastics Pub Date : 2021-05-29 DOI: 10.1177/0021955X211021014

Alejandro E. Rodríguez-Sánchez, H. Plascencia-Mora

{"title":"A machine learning approach to estimate the strain energy absorption in expanded polystyrene foams","authors":"Alejandro E. Rodríguez-Sánchez, H. Plascencia-Mora","doi":"10.1177/0021955X211021014","DOIUrl":"https://doi.org/10.1177/0021955X211021014","url":null,"abstract":"Traditional modeling of mechanical energy absorption due to compressive loadings in expanded polystyrene foams involves mathematical descriptions that are derived from stress/strain continuum mechanics models. Nevertheless, most of those models are either constrained using the strain as the only variable to work at large deformation regimes and usually neglect important parameters for energy absorption properties such as the material density or the rate of the applying load. This work presents a neural-network-based approach that produces models that are capable to map the compressive stress response and energy absorption parameters of an expanded polystyrene foam by considering its deformation, compressive loading rates, and different densities. The models are trained with ground-truth data obtained in compressive tests. Two methods to select neural network architectures are also presented, one of which is based on a Design of Experiments strategy. The results show that it is possible to obtain a single artificial neural networks model that can abstract stress and energy absorption solution spaces for the conditions studied in the material. Additionally, such a model is compared with a phenomenological model, and the results show than the neural network model outperforms it in terms of prediction capabilities, since errors around 2% of experimental data were obtained. In this sense, it is demonstrated that by following the presented approach is possible to obtain a model capable to reproduce compressive polystyrene foam stress/strain data, and consequently, to simulate its energy absorption parameters.","PeriodicalId":15236,"journal":{"name":"Journal of Cellular Plastics","volume":"79 1","pages":"399 - 427"},"PeriodicalIF":2.5,"publicationDate":"2021-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74124072","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: 6

Characteristics of pre-strained polyisocyanurate foam: Deformation recovery and compressive mechanical behavior at cryogenic temperature 预应变聚异氰脲酸酯泡沫的特性:低温下的变形恢复和压缩力学行为

IF 2.5 4区工程技术

Journal of Cellular Plastics Pub Date : 2021-05-25 DOI: 10.1177/0021955X211020293

Seul-Kee Kim, Jeong-Dae Kim, Dong-Ha Lee, Jeong‐Hyeon Kim, Jaemyung Lee

引用次数: 1

Solid-state foaming of acrylonitrile butadiene styrene through microcellular 3D printing process 利用微孔3D打印技术制备丙烯腈-丁二烯-苯乙烯固态发泡

IF 2.5 4区工程技术

Journal of Cellular Plastics Pub Date : 2021-05-04 DOI: 10.1177/0021955X211009443

Rupesh Dugad, G. Radhakrishna, A. Gandhi

引用次数: 2

Patents May issue 专利可以发布

IF 2.5 4区工程技术

Journal of Cellular Plastics Pub Date : 2021-05-01 DOI: 10.1177/0021955X211010586

引用次数: 0

Morphological, thermal and mechanical properties of recycled HDPE foams via rotational molding 循环成型再生HDPE泡沫塑料的形态、热、机械性能

IF 2.5 4区工程技术

Journal of Cellular Plastics Pub Date : 2021-04-29 DOI: 10.1177/0021955X211013793

Y. Dou, D. Rodrigue

引用次数: 7

Cellular Bi2O3/natural rubber composites for light-weight and lead-free gamma-shielding materials and their properties under gamma irradiation 蜂窝状Bi2O3/天然橡胶复合材料的轻质无铅屏蔽材料及其在γ辐射下的性能

IF 2.5 4区工程技术

Journal of Cellular Plastics Pub Date : 2021-04-26 DOI: 10.1177/0021955X21997353

Phakamat Limarun, T. Markpin, N. Sombatsompop, E. Wimolmala, K. Saenboonruang

{"title":"Cellular Bi2O3/natural rubber composites for light-weight and lead-free gamma-shielding materials and their properties under gamma irradiation","authors":"Phakamat Limarun, T. Markpin, N. Sombatsompop, E. Wimolmala, K. Saenboonruang","doi":"10.1177/0021955X21997353","DOIUrl":"https://doi.org/10.1177/0021955X21997353","url":null,"abstract":"This work investigated the effects of a radiation-protective filler, namely bismuth oxide (Bi2O3), and blowing agents, namely azodicarbonamide (ADC) and oxy-bis (benzene sulfonyl) hydrazide (OBSH), on gamma attenuation and the mechanical, physical, and morphological properties of cellular natural rubber (NR) composites for potential use as light-weight and lead-free gamma-shielding materials. The contents of Bi2O3 were varied from 100 to 300 and 500 parts per hundred of rubber by weight (phr) and the contents of ADC or OBSH were varied from 0 to 8 and 16 phr. The results indicated that the addition of Bi2O3 enhanced the overall gamma-shielding ability, density, tensile modulus, and hardness (Shore OO), but lowered the tensile strength and elongation at break. On the other hand, the addition of ADC or OBSH resulted in decreases in the density, linear attenuation coefficient (μ), and overall tensile properties but an increase in the mass attenuation coefficient (μm), with ADC producing better mechanical properties than samples with OBSH. In addition, investigations on the properties of the cellular Bi2O3/NR composites under additional 35 kGy and 70 kGy gamma irradiation revealed that the irradiated samples had increased density, tensile modulus, and hardness (Shore OO), but decreased tensile strength, elongation at break, and μm after such ageing. In conclusion, the overall results suggested that the developed cellular Bi2O3/NR composites not only had efficient and promising gamma-shielding and mechanical properties but also offered comfort and light-weight to users, which could potentially reduce discomforts caused by wearing heavier conventional radiation-protective equipment.","PeriodicalId":15236,"journal":{"name":"Journal of Cellular Plastics","volume":"139 1","pages":"285 - 303"},"PeriodicalIF":2.5,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90154000","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: 6

Effect of tris(1-chloro-2-propyl)phosphate in combination with aluminum hypophosphite and melamine polyphosphate on flame retardancy and thermal decomposition of rigid polyurethane foams 磷酸三(1-氯-2-丙基)与次磷酸铝和聚磷酸三聚氰胺复合对硬质聚氨酯泡沫的阻燃性和热分解性能的影响

IF 2.5 4区工程技术

Journal of Cellular Plastics Pub Date : 2021-04-06 DOI: 10.1177/0021955X211001957

Daifang Xu, Kejing Yu, K. Qian, Weiguo Zhao

{"title":"Effect of tris(1-chloro-2-propyl)phosphate in combination with aluminum hypophosphite and melamine polyphosphate on flame retardancy and thermal decomposition of rigid polyurethane foams","authors":"Daifang Xu, Kejing Yu, K. Qian, Weiguo Zhao","doi":"10.1177/0021955X211001957","DOIUrl":"https://doi.org/10.1177/0021955X211001957","url":null,"abstract":"RPUF with tris(1-chloro-2-propyl)phosphate (TCPP), melamine polyphosphate (MPP) and aluminum hypophosphite (AHP) alone, as well as their binary and ternary blends, were prepared via a one-step process. The effect of TCPP in combination with AHP and MPP on flame retardancy and thermal decomposition in the RPUF has been investigated. The results show that adding TCPP, MPP and AHP into RPUF simultaneously can significantly ensure the uniform cell structure, enhance the compressive strength, thermal stability and fire resistance of RPUF, decrease the thermal conductivity, the release of toxic HCN at high temperature. TGA results indicate that partial substitution of TCPP with MPP and AHP could improve the char residue. When the content of TCPP is 10 wt%, the optimal ratio of MPP and DPER was 1/2, the TCPP10/MPP3.3/AHP6.7/RPUF sample reached a V1 rating in vertical UL-94 test with a limiting oxygen index of 27.4%. The compressive strength and specific compressive strength (compressive strength/density) for TCPP10/MPP3.3/AHP6.7/RPUF sample increased about 82.6% and 44.3% compared to that of pure RPUF, respectively. The cone calorimeter test results showed that adding EG, MPP and AHP into RPUF simultaneously can significantly decrease the heat release rate (HRR), total heat release (THR) and smoke emission behavior of RPUF sample. Based on these facts, a potential flame-retardant mechanism was proposed.","PeriodicalId":15236,"journal":{"name":"Journal of Cellular Plastics","volume":"216 1","pages":"263 - 284"},"PeriodicalIF":2.5,"publicationDate":"2021-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77002163","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

Evaluating the gas-laden ability of polymer melt under atmospheric conditions using a modified torque rheometer 用改进的扭矩流变仪评估常压条件下聚合物熔体的载气能力

IF 2.5 4区工程技术

Journal of Cellular Plastics Pub Date : 2021-03-05 DOI: 10.1177/0021955X21997351

Xing-Yu Mei, Ying‐Guo Zhou, Hongda Sun, Binbin Dong, Chun-tai Liu, L. Turng

{"title":"Evaluating the gas-laden ability of polymer melt under atmospheric conditions using a modified torque rheometer","authors":"Xing-Yu Mei, Ying‐Guo Zhou, Hongda Sun, Binbin Dong, Chun-tai Liu, L. Turng","doi":"10.1177/0021955X21997351","DOIUrl":"https://doi.org/10.1177/0021955X21997351","url":null,"abstract":"To investigate the effects of incorporating gas and the associated influencing factors on polymer melt, a method of evaluating the gas-laden ability using modified rheometric measurements was proposed. In this study, common and widely used thermoplastic materials—polypropylene (PP) and high-density polyethylene (HDPE), and their blends with different weight ratios—were selected, and the rheological properties of neat melt and gas-laden melts were tested using a modified torque rheometer. The foamed samples were also produced using a regular injection-molding machine, and the foamed morphology was examined by scanning electron microscope (SEM). The comparison of rheological curves of neat melt and gas-laden melt indicated that the incorporation of gas influenced the rheological properties of the gas-laden polymer melts as evidenced by a decrease of zero-rotational torque and an increase in the melt flow index. The results also suggested that the gas-laden ability of polymer melt could be evaluated quantitatively by the decay (due to desorption) of gas using the modified rheological measurement method. This study also demonstrated that the gas-laden ability can be used to predict the foaming behavior of polymer melts.","PeriodicalId":15236,"journal":{"name":"Journal of Cellular Plastics","volume":"30 1","pages":"237 - 261"},"PeriodicalIF":2.5,"publicationDate":"2021-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75607456","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