innoTRAC Journal最新文献

Closed-Loop-Recycling von Förderketten aus Kunststoff 塑料围栏循环利用

innoTRAC Journal Pub Date : 2022-12-08 DOI: 10.14464/innotrac.v2i1.523

Jens Sumpf, Markus Golder

{"title":"Closed-Loop-Recycling von Förderketten aus Kunststoff","authors":"Jens Sumpf, Markus Golder","doi":"10.14464/innotrac.v2i1.523","DOIUrl":"https://doi.org/10.14464/innotrac.v2i1.523","url":null,"abstract":"In Transport- und Verkettungsprozessen werden zunehmend Stetigförderer mit Ketten aus technischen Thermoplasten, vorzugsweise aus Polyoxymethylen (POM), hergestellt. Verschlissene Ketten, die sich im Schnitt ca. 2-10 Jahre im industriellen Einsatz unter verschiedensten Belastungs- und Umgebungsbedingungen befinden, werden ausgetauscht und derzeit ausschließlich im Restmüll entsorgt. Im Beitrag werden die mechanischen und tribologischen Eigenschaften von homo- und copolymerem POM bei mehrfacher Verarbeitung sowie Vermischung der Materialtypen analysiert. Auf dieser Grundlage wurde ein Rezyklat aus mehrjährig in industriellen Anwendungen gelaufenen POM-Ketten hergestellt und daraus Proben und Förderketten für weitere Untersuchungen gefertigt. Es wird gezeigt, dass die wertvollen Kunststoffe durchaus erfolgreich recycelt und wieder zu neuen Bauteilen verarbeitet werden können. \u0000In transport and linking processes, continuous conveyors with chains made of engineering thermoplastics, preferably polyoxymethylene (POM), are increasingly being used. Worn chains, which are used in industrial applications for an average of 2-10 years under a wide variety of load and environmental conditions, are replaced and currently disposed of in the residual waste. The article analyses the mechanical and tribological properties of homo- and copolymeric POM during multiple processing and blending of the material types. Based on this, a recyclate was produced from POM conveyor chains that had been used in industrial applications for several years. Samples and chains were made from this material for further investigations. It is shown that the valuable plastics can be successfully recycled and reprocessed into new components.","PeriodicalId":348432,"journal":{"name":"innoTRAC Journal","volume":"289 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117298240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simulative Abbildung der Blattfederaufstellung eines Vibrationsförderers durch Timoshenko Balken in SimulationX 模拟地在模拟

innoTRAC Journal Pub Date : 2022-12-08 DOI: 10.14464/innotrac.v2i1.521

C. Kuhn, Thomas Risch, Markus Golder

引用次数: 0

Structural stability of Polylactide rope drums with a hybrid Gyroid-spokes infill structure, manufactured through fused filament fabrication 采用熔丝法制造的螺旋-辐条混合填充结构聚乳酸绳筒的结构稳定性

innoTRAC Journal Pub Date : 2022-12-08 DOI: 10.14464/innotrac.v2i1.516

R. Hofmann, Armin Bochert, T. Schmidt

{"title":"Structural stability of Polylactide rope drums with a hybrid Gyroid-spokes infill structure, manufactured through fused filament fabrication","authors":"R. Hofmann, Armin Bochert, T. Schmidt","doi":"10.14464/innotrac.v2i1.516","DOIUrl":"https://doi.org/10.14464/innotrac.v2i1.516","url":null,"abstract":"Additive manufacturing (AM) offers greater design freedom than conventional manufacturing processes. AM allows for components with complex infill structures of e. g. triply periodic-minimal surfaces (TPMS) that lead to significant weight reduction. Nevertheless, AM is mainly used in specialised engineering branches such as aerospace and medical engineering. This is due to high system cost and the high energy costs of the machines used, which utilise selective laser sintering (SLS), laser powder bed fusion (LPBF), or stereolithography (SLA). Fused filament fabrication (FFF) can offer cheaper and more energy-efficient machines. A series of tensile tests with FFF rope drum bodies made from polylactide (PLA) aims to investigate the stability of FFF machine elements. The test specimens possess a novel, hybrid infill structure comprised of straight spokes and a TPMS-gyroid surface. Compared to previous investigations, the specific breaking force – relative to the test specimens’ weight – increased by up to 159%. Whereas the infill density affects tensile strength as well as deformation, the infill distribution between the TPMS and spokes part of said hybrid structure affects especially the deformation behaviour. The results show that FFF machine elements such as the tested drum bodies have a realistic perspective for use in future products with regard to static strength.","PeriodicalId":348432,"journal":{"name":"innoTRAC Journal","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133755112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prüfung der mechanischen Zeitstandfestigkeit von Filamentgarn bei heterogenen Wirkpaarungen 检查基本形态的纤维线的机械对时间的运用

innoTRAC Journal Pub Date : 2022-12-08 DOI: 10.14464/innotrac.v2i1.519

Enrico Putzke, Thomas Hühnel, K. Grosser, F. Ficker

引用次数: 0

Untersuchung der Quersteifigkeit geflochtener hochfester Faserseile 我是在调查竹竿交叉的情况

innoTRAC Journal Pub Date : 2022-12-08 DOI: 10.14464/innotrac.v2i1.573

K. Stange, C. Müller, Markus Golder

引用次数: 0

Einfluss der Lastabstützung und des Antriebssystems auf den Energiebedarf von Zahnriemenförderern 支柱支撑和发动机对牙线钳需求的影响

innoTRAC Journal Pub Date : 2022-12-08 DOI: 10.14464/innotrac.v2i1.570

J. Finke, Jens Sumpf, Markus Golder

引用次数: 0

Permanently installed rope monitoring in conveyor systems 在输送系统中永久安装绳索监控

innoTRAC Journal Pub Date : 2022-12-08 DOI: 10.14464/innotrac.v2i1.575

R. Eisinger, Gregor Novak, Stefan Hecht

引用次数: 0

Tribological and mechanical properties of lubricant filled microcapsules in thermoplastic composites 热塑性复合材料中润滑油填充微胶囊的摩擦学和力学性能

innoTRAC Journal Pub Date : 2022-12-08 DOI: 10.14464/innotrac.v2i1.514

M. Grünewald, A. Latnikova, Katrin Hohmann, A. Sänger, J. Rudloff, Michaelle Bosse, T. Hochrein, M. Bastian

{"title":"Tribological and mechanical properties of lubricant filled microcapsules in thermoplastic composites","authors":"M. Grünewald, A. Latnikova, Katrin Hohmann, A. Sänger, J. Rudloff, Michaelle Bosse, T. Hochrein, M. Bastian","doi":"10.14464/innotrac.v2i1.514","DOIUrl":"https://doi.org/10.14464/innotrac.v2i1.514","url":null,"abstract":"Polymeric materials with long lifetime and low frictional energy loss are frequently required for a broad range of applications. Microencapsulation of lubricating oils by in-situ polymerization (melamine-formaldehyde) and interfacial polymerization (polyurethane/polyurea) was used to obtain free-flowing powders, which can be used as additive for thermoplastic materials resulting in microcapsule-containing self-lubricating composites. The specific functionality of such composites is achieved via portioned and localised release of the lubricant in the areas of the interface, which experiences the highest degrees of stress and wear due to the friction. Friction-triggered on-demand release of the lubricating oil results in materials with higher wear resistance and potentially leading to new products with prolonged lifetime. In this study, different ratios of microcapsules were added in polyoxymethylene (POM) and polybutylterephthalat (PBT) matrices by using laboratory scale twin-screw extruder resulting in self-lubricating composite materials. The effect of such modification on the tribological and mechanical properties of the thermoplastic composites were investigated. Rotational ball on disc tests were used to investigate the wear loss and coefficient of friction for the composites with varied microcapsule concentrations. Tensile tests revealed decreased mechanical stability for the composites with higher microcapsule content regardless of microcapsule wall material composition. Addition of 5 wt.- % of encapsulated lubricant oil led to the substantial decrease of the frictional and wear coefficients. Further increase of encapsulated lubricant oil content to 10 wt.-% had a major decreasing impact on the mechanical properties, whilst the effect on the tribological performance was rather small.","PeriodicalId":348432,"journal":{"name":"innoTRAC Journal","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116745945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Endverbindungen von kunststoffummantelten Faserseilen 塑料和纤维纤维的最后连接

innoTRAC Journal Pub Date : 2022-12-08 DOI: 10.14464/innotrac.v2i1.574

T. Heinze, Tobias Halle

引用次数: 0

Tieftemperatur-Dauerbiegeprüfung von Faserseilen (konstruktive Entwicklung eines Versuchstandes) 纤维纤维单轴加工

innoTRAC Journal Pub Date : 2022-12-08 DOI: 10.14464/innotrac.v2i1.522

U. Metzner

引用次数: 0