International Polymer Processing最新文献_第6页

Time series data for process monitoring in injection molding: a quantitative study of the benefits of a high sampling rate 注塑过程监控的时间序列数据：高采样率效益的定量研究

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-04-14 DOI: 10.1515/ipp-2022-4258

Lucas Bogedale, Alexander Schrodt, H. Heim

{"title":"Time series data for process monitoring in injection molding: a quantitative study of the benefits of a high sampling rate","authors":"Lucas Bogedale, Alexander Schrodt, H. Heim","doi":"10.1515/ipp-2022-4258","DOIUrl":"https://doi.org/10.1515/ipp-2022-4258","url":null,"abstract":"Abstract Process monitoring systems are playing an increasingly important role in reducing production capacity losses in injection molding. Process monitoring and optimization systems are mostly based on processing data of injection molding machine control systems. These data consist of scalar data and time series. This paper introduces a novel approach to modelling injection molding processes using only time series data and evaluates the quantitative influences of varying sampling times on calculation of integral values and model quality. On the basis of the first experiment, it is shown that the sampling rates of these time series have a large influence on information which can be derived from this data (e.g. injection work). These findings provide an assessment of whether the effort is justified for the respective requirements on the accuracy of the injection work and other parameters derived from the time series. In the second experiment, a model is presented which uses only the injection flow and injection pressure profile as input and achieves high coefficients of determination for the prediction of the part weight, despite the absence of mold sensor data and scalar data. It is shown that higher sampling rates of time series results in higher prediction quality of these models. This improves the understanding of the data needed for high quality machine learning models of injection molding processes and enable users to estimate a lower bound for the sample rates of time series for their use cases.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"167 - 174"},"PeriodicalIF":1.3,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47238065","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

Study on the thermal stability and combustion performance of polyurethane foams modified with manganese phytate 植酸酶改性聚氨酯泡沫的热稳定性和燃烧性能研究

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-03-20 DOI: 10.1515/ipp-2022-4278

Xu Zhang, Dehe Yuan, Simiao Sun, Handong Li, Zhi Wang, Hua Xie

{"title":"Study on the thermal stability and combustion performance of polyurethane foams modified with manganese phytate","authors":"Xu Zhang, Dehe Yuan, Simiao Sun, Handong Li, Zhi Wang, Hua Xie","doi":"10.1515/ipp-2022-4278","DOIUrl":"https://doi.org/10.1515/ipp-2022-4278","url":null,"abstract":"Abstract A new environmental friendly flame retardant manganese phytate (MnPa) was prepared by a direct precipitation method and the polyurethane foam (PUF) modified with MnPa was obtained by a one-step all-water foaming method. The thermal stability and combustion performance of the MnPa-modified PUF (MnPUF) were investigated by using thermogravimetric (TG), thermal decomposition kinetics, smoke density characterization, limiting oxygen index (LOI) and UL-94 horizontal combustion test. The results indicated that the addition of MnPa significantly improved the thermal stability and combustion performance of the modified PUF. On the basis of the thermogravimetric analysis, Flynn-Wall-Ozawa method, Kissinger method and Coats Redfern method, it could be concluded that PUF with 7.5 wt% MnPa (MnPUF3) had the highest activation energy and the best thermal stability. Smoke density analysis, LOI and horizontal combustion analysis also showed that the addition of MnPa was positively correlated with smoke suppression, LOI value and burning time. The current research results can provide a reference for the subsequent flame retardant modification of PUF.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"300 - 309"},"PeriodicalIF":1.3,"publicationDate":"2023-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47166621","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: 2

Development of a prototype for the rubber latex industry to detect dry rubber content of fresh natural rubber latex using a novel measurement system with proton-electron transfer 用新型质子电子转移测量系统检测新鲜天然胶乳干橡胶含量的胶乳工业原型的开发

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-03-17 DOI: 10.1515/ipp-2022-4304

Sittidet Chooduang, Korn Taksapattanakul

{"title":"Development of a prototype for the rubber latex industry to detect dry rubber content of fresh natural rubber latex using a novel measurement system with proton-electron transfer","authors":"Sittidet Chooduang, Korn Taksapattanakul","doi":"10.1515/ipp-2022-4304","DOIUrl":"https://doi.org/10.1515/ipp-2022-4304","url":null,"abstract":"Abstract Rubber latex industry has been looking for techniques to rapidly estimate the dry rubber content (DRC) of rubber latex with accuracy, at a low cost, and to be used by non-technical people in the field. The basis of electrical charge in terms of proton-electron transfer (P.E.TF) was used to develop a new prototype. The prototype was created with the P.E.TF system, two electrode probe detectors, and a new code program on Arduino board. The data was collected using the P.E.TF system of fresh natural rubber latex and presented as the P.E.TF number and the percentage of dry rubber content (%DRC). The standard method (ISO126:2005(E)) was used to calculate %DRC. The comparison of the %DRC measurement using the prototype and the standard method was studied. It was found that the new code program on Arduino board could evaluate the data. In real-time, it converted the P.E.TF number into %DRC on the LCD screen. The %DRC measurement using the prototype was close to that calculated using the standard method. The correlation between the two methods is 0.9814 of Rsqr. Therefore, the novel measurement system can replace the standard method for the %DRC measurement of fresh natural rubber latex. The prototype is simple, fast to detect, small, and low-cost without operator training.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"225 - 232"},"PeriodicalIF":1.3,"publicationDate":"2023-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49454517","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

Notable electrical and mechanical properties of polyacrylamide (PAM) with graphene oxide (GO) and single-walled carbon nanotubes (SWCNTs) 氧化石墨烯(GO)和单壁碳纳米管(SWCNTs)对聚丙烯酰胺(PAM)电学和力学性能的影响

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-03-14 DOI: 10.1515/ipp-2022-4295

Seema Awasthi, T. Yadav, K. Awasthi

{"title":"Notable electrical and mechanical properties of polyacrylamide (PAM) with graphene oxide (GO) and single-walled carbon nanotubes (SWCNTs)","authors":"Seema Awasthi, T. Yadav, K. Awasthi","doi":"10.1515/ipp-2022-4295","DOIUrl":"https://doi.org/10.1515/ipp-2022-4295","url":null,"abstract":"Abstract In the present investigation, a polyacrylamide (PAM) – graphene oxide (GO)-single-walled carbon nanotubes (SWNTs) composite has been prepared through a cost effective solution cast method and physical properties (electrical and mechanical) measurements have been carried out. The GO sheets contain oxygen functional groups which enhance the interfacial adhesion with the polymer matrix, while the SWNTs act as wires joining the GO together in the composite matrix. This interconnected network creates a conducting path, lowering film resistance and improving PAM films’ electrical, mechanical, and thermal properties. Raman study demonstrated that carbon nanofiller (SWNTs, GO) and polymer PAM have good interfacial bonding. The electrical conductivity and mechanical characteristics (hardness and elastic modulus) of these composite films were enhanced at a loading of 15 wt% GO and 15 wt% SWNTs in PAM matrix. Electrical conductivity of GO (15 wt%) – SWNTs (15 wt%)-PAM composite film was found to be 2.8 × 10−2 S/cm, which is five orders of magnitude higher than that of the PAM polymer. In comparison to pure PAM polymer, the elastic modulus and hardness are found to be 1.14 and 65 times higher, respectively.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"290 - 299"},"PeriodicalIF":1.3,"publicationDate":"2023-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45441677","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

Frontmatter 头版头条

4区工程技术

International Polymer Processing Pub Date : 2023-03-01 DOI: 10.1515/ipp-2023-frontmatter1

引用次数: 0

Feasibility assessment of injection molding online monitoring based on oil pressure/nozzle pressure/cavity pressure 基于油压/喷嘴压力/型腔压力的注塑在线监测可行性评估

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-02-22 DOI: 10.1515/ipp-2022-4281

Hao-Hsuan Tsou, Chung-Ching Huang, Zhi-Hao Wang, Tingting Zhao

引用次数: 1

Experimental investigation and simulation of 3D printed sandwich structures with novel core topologies under bending loads 新型芯拓扑三维打印夹层结构在弯曲载荷作用下的实验研究与仿真

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-02-22 DOI: 10.1515/ipp-2022-4311

M. Eryildiz

{"title":"Experimental investigation and simulation of 3D printed sandwich structures with novel core topologies under bending loads","authors":"M. Eryildiz","doi":"10.1515/ipp-2022-4311","DOIUrl":"https://doi.org/10.1515/ipp-2022-4311","url":null,"abstract":"Abstract In a range of applications, such as the automotive, aerospace, and shipbuilding sectors, where weight reduction is essential, sandwich structures are getting more popular. The performance of sandwich structures in bending can be enhanced by using lightweight core topologies. In this study, six different novel and new core topologies were designed with CATIA V5. Polylactic acid (PLA) sandwich structures with new core designs were produced using the fused deposition modeling (FDM) additive manufacturing method. In order to determine the mechanical characteristics of these six designed core topologies, three-point bending tests on sandwich structures were performed. The influence of core topology on the flexural characteristics of lightweight sandwich structures was investigated to appropriately choose and design the core topology of the sandwich structures to meet desired structural requirements. To evaluate the flexural behavior of sandwich structures, finite element simulation using ANSYS Workbench 2021 R2 was also performed. Both the experimental data and simulation were in good agreement and clearly showed that the sandwich structure with the triple bow core exhibited the highest mechanical properties. These results provide new perspectives on the investigation of the mechanical response of sandwich structures, which can be beneficial for many other industries and applications.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"277 - 289"},"PeriodicalIF":1.3,"publicationDate":"2023-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48559302","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

A comparative analysis of the effect of post production treatments and layer thickness on tensile and impact properties of additively manufactured polymers 生产后处理和层厚度对添加制造聚合物拉伸和冲击性能影响的比较分析

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-02-20 DOI: 10.1515/ipp-2022-4267

Çağın Bolat, Berkay Ergene, Hasan Ispartalı

{"title":"A comparative analysis of the effect of post production treatments and layer thickness on tensile and impact properties of additively manufactured polymers","authors":"Çağın Bolat, Berkay Ergene, Hasan Ispartalı","doi":"10.1515/ipp-2022-4267","DOIUrl":"https://doi.org/10.1515/ipp-2022-4267","url":null,"abstract":"Abstract In recent years, additive manufacturing (AM) technologies have become greatly popular in the polymer, metal, and composite industries because of the capability for rapid prototyping, and appropriateness for the production of complex shapes. In this study, a comprehensive comparative analysis focusing on the influence of post-processing types (heat treatment and water absorption) on tensile and impact responses was carried out on 3D printed PETG, PLA, and ABS. In addition, layer thickness levels (0.2, 0.3, and 0.4 mm) were selected as a major production parameter and their effect on mechanical properties was combined with post-processing type for the first time. The results showed that both tensile and impact resistance of the printed polymers increased thanks to the heat treatment. The highest tensile strength was measured for heat-treated PLA, while the peak impact endurance level was reached for heat-treated PETG. Also, water absorption caused a mass increment in all samples and induced higher tensile elongation values. Decreasing layer thickness had a positive effect on tensile features, but impact strength values dropped. On the other hand, all samples were subjected to macro and micro failure analyses to understand the deformation mechanism. These inspections indicated that for impact samples straight crack lines converted to zigzag style separation lines after the heat treatment. As for the tensile samples, the exact location of the main damage zone altered with the production stability, the water absorption capacity of the polymer, and the thermal diffusion ability of the filament.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"244 - 256"},"PeriodicalIF":1.3,"publicationDate":"2023-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41413529","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: 2

Effect of molding history on molecular orientation relaxation during physical aging of polystyrene injection moldings 成型历史对聚苯乙烯注塑制品物理老化过程中分子取向弛豫的影响

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-02-17 DOI: 10.1515/ipp-2022-4264

Kousaku Tao, K. Yamada, S. Higashi, K. Kago, Shiho Kuwashiro, H. Hirano, Hiroki Takeshita, K. Tokumitsu

{"title":"Effect of molding history on molecular orientation relaxation during physical aging of polystyrene injection moldings","authors":"Kousaku Tao, K. Yamada, S. Higashi, K. Kago, Shiho Kuwashiro, H. Hirano, Hiroki Takeshita, K. Tokumitsu","doi":"10.1515/ipp-2022-4264","DOIUrl":"https://doi.org/10.1515/ipp-2022-4264","url":null,"abstract":"Abstract This work examined the effect of changing molding conditions on the physical aging of polystyrene injection moldings. First, we investigated the relationship between the molecular orientation and the molding conditions. The molecular orientation near the surface changed with changing injection rate, so we hypothesized that this molecular orientation might form during the filling stage. Because this molecular orientation did not relax under heat treatment below the glass transition temperature (Tg), the oriented molecules near the surface were thought to be elongated owing to the high strain rate during the filling stage. On the other hand, the molecular orientation in the core layer changed with changing holding pressure and relaxed under heat treatment below Tg. Thus, the molecules in the core layer might become oriented during the holding stage and not be elongated owing to the slow strain rate. Furthermore, the molecular orientation in the core layer decreased with increasing mold temperature, and the physical heat resistance improved with increasing mold temperature. Meanwhile, the excess enthalpy did not change with changing molding conditions. Therefore, the improvement in physical heat resistance with increasing mold temperature was likely caused by the decrease in the molecular orientation in the core layer. Analyzing the relaxation behavior of the molecular orientation suggested that increasing mold temperature reduced the number of oriented molecules with large deformation in the core layer.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"233 - 243"},"PeriodicalIF":1.3,"publicationDate":"2023-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49641527","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

Statistical research on the mixing properties of wave based screws by numerical simulations 波浪型螺杆混合特性的数值模拟统计研究

IF 1.3 4区工程技术

International Polymer Processing Pub Date : 2023-02-15 DOI: 10.1515/ipp-2022-4253

Tian Liu, Yaoxue Du, Xiangdong He

{"title":"Statistical research on the mixing properties of wave based screws by numerical simulations","authors":"Tian Liu, Yaoxue Du, Xiangdong He","doi":"10.1515/ipp-2022-4253","DOIUrl":"https://doi.org/10.1515/ipp-2022-4253","url":null,"abstract":"Abstract Research based on numerical simulation with the CFD software ANSYS POLYFLOW is conducted on the mixing properties for the wave screw elements, as well as barrier screw elements, by using statistical tools. Then, the investigation is conducted in detail on the relationship between pressure, maximum shear rate, mixing index and other flow field characteristics of the two above screws under the same simulation conditions. It is found that polymer melt flow in the wave screw possesses various advantages compared with the normal barrier screw, such as acquiring larger pressure, stronger shearing and stretching action, better mixing and efficiency, which mainly result from the periodic depth change design in the screw groove. On the other hand, the increased wave bulge in the wave screw lessens the space for the polymer melt to be conveyed forward, which can greatly reduce the original function of the secondary flight. Also, the convergent and divergent zones in the wave screw groove produce a much stronger stress favoring the shear and elongation rates, and also lead to a sharp increase of the axial force load on the wave screw. Consequently, for the optimization of the wave screw configuration it is suggested to reduce the axial force without decreasing the effect of the excellent distributive and dispersive mixing.","PeriodicalId":14410,"journal":{"name":"International Polymer Processing","volume":"38 1","pages":"200 - 213"},"PeriodicalIF":1.3,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44314103","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