Pub Date : 2024-01-11DOI: 10.35164/0554-2901-2023-11-12-26-30
A. Syatkovskiy, I. D. Simonov-Emelyanov
The purpose of the presented work is to investigate by DMA method the influence of the composition of filled and unfilled plasticized compositions based on polyvinyl acetate (PVA), polybutyl methacrylate (PBMA) and polymethyl methacrylate (PMMA) on their damping characteristics. It was found that when plasticizer is introduced into the polymer, the value of the mechanical loss coefficient first increases, reaches its maximum, and begins to decrease with further increase in the plasticizer content. The maximum effect is observed at a plasticizer/polymer volume ratio of 0.2-0.4. Two other dissipative characteristics, the temperature interval of effective damping and the integral coefficient of mechanical losses, are changing similarly. It is established that the additives of chlorinated paraffins in compositions based on PVA and PBMA can significantly improve their vibration absorbing characteristics. Introduction of mica filler into the composition of plasticized compositions based on PVA and PBMA does not lead to the appearаnсe of additional relaxation mechanisms. With increasing of the content of mica, the elastic modulus of compositions increases in the entire temperature range (especially significantly for compositions with a high content of plasticizer), the coefficient of mechanical losses slightly decreases, and the temperature practically does not change at which the maximum damping is observed.
{"title":"Damping materials based on plasticized polybutyl methacrylate, polymethyl methacrylate and polyvinyl acetate","authors":"A. Syatkovskiy, I. D. Simonov-Emelyanov","doi":"10.35164/0554-2901-2023-11-12-26-30","DOIUrl":"https://doi.org/10.35164/0554-2901-2023-11-12-26-30","url":null,"abstract":"The purpose of the presented work is to investigate by DMA method the influence of the composition of filled and unfilled plasticized compositions based on polyvinyl acetate (PVA), polybutyl methacrylate (PBMA) and polymethyl methacrylate (PMMA) on their damping characteristics. It was found that when plasticizer is introduced into the polymer, the value of the mechanical loss coefficient first increases, reaches its maximum, and begins to decrease with further increase in the plasticizer content. The maximum effect is observed at a plasticizer/polymer volume ratio of 0.2-0.4. Two other dissipative characteristics, the temperature interval of effective damping and the integral coefficient of mechanical losses, are changing similarly. It is established that the additives of chlorinated paraffins in compositions based on PVA and PBMA can significantly improve their vibration absorbing characteristics. Introduction of mica filler into the composition of plasticized compositions based on PVA and PBMA does not lead to the appearаnсe of additional relaxation mechanisms. With increasing of the content of mica, the elastic modulus of compositions increases in the entire temperature range (especially significantly for compositions with a high content of plasticizer), the coefficient of mechanical losses slightly decreases, and the temperature practically does not change at which the maximum damping is observed.","PeriodicalId":20254,"journal":{"name":"Plasticheskie massy","volume":" 46","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139627181","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}
Pub Date : 2023-11-21DOI: 10.35164/0554-2901-2023-9-10-33-35
D. Matveev, E. Grushevenko, Yu. I. Matveeva, V. Vasilevsky, I. Borisov
A novel composite hollow fiber membrane has been developed for the separation of C2+ hydrocarbons from their mixture with methane. A high-performance porous polysulfone hollow fiber support was fabricated. Polydecylmethylsiloxane (PDecMS) and polydimethylsiloxane (PDMS) were used as a thin selective layer. Comparison of the results of separation of binary mixture of CH4 and C4H10 using PDecMS/PSF and PDMS/PSF membranes showed that for the PDecMS/PSF module the specific retentate flux and n-butane concentration in the permeate are 1.7 times higher and energy consumption is 9 times lower.
{"title":"Development of novel composite polydecylmethylsiloxane hollow fiber membranes on highly permeable polysulfone support for С2+/С1 separation","authors":"D. Matveev, E. Grushevenko, Yu. I. Matveeva, V. Vasilevsky, I. Borisov","doi":"10.35164/0554-2901-2023-9-10-33-35","DOIUrl":"https://doi.org/10.35164/0554-2901-2023-9-10-33-35","url":null,"abstract":"A novel composite hollow fiber membrane has been developed for the separation of C2+ hydrocarbons from their mixture with methane. A high-performance porous polysulfone hollow fiber support was fabricated. Polydecylmethylsiloxane (PDecMS) and polydimethylsiloxane (PDMS) were used as a thin selective layer. Comparison of the results of separation of binary mixture of CH4 and C4H10 using PDecMS/PSF and PDMS/PSF membranes showed that for the PDecMS/PSF module the specific retentate flux and n-butane concentration in the permeate are 1.7 times higher and energy consumption is 9 times lower.","PeriodicalId":20254,"journal":{"name":"Plasticheskie massy","volume":"156 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139251469","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}
Pub Date : 2023-11-21DOI: 10.35164/0554-2901-2023-9-10-39-42
T. V. Komarova, V. V. Shashkov, N. E. Kalaytanova
The effect of mercury impurities on the process of gas-phase polymerization of ethylene has been studied. The effect of the MERCURY catalytic poison on the ethylene polymerization process is twofold: the poisons interact with the active centers of the catalyst, thereby suppressing their activity, and also react with the molecule of the resulting polymer, breaking the growing chain. This results in a decrease in the activity of the catalyst due to poisoning of the active centers and a decrease in the molecular weight of the resulting polymer due to premature chain termination. At the same time, the flow index increases and the size of the obtained polymer particles decreases, the density increases, since the comonomer does not react.
{"title":"Effect of mercury impurities in ethylene feed stream on ethylene gas-phase polymerisation processes","authors":"T. V. Komarova, V. V. Shashkov, N. E. Kalaytanova","doi":"10.35164/0554-2901-2023-9-10-39-42","DOIUrl":"https://doi.org/10.35164/0554-2901-2023-9-10-39-42","url":null,"abstract":"The effect of mercury impurities on the process of gas-phase polymerization of ethylene has been studied. The effect of the MERCURY catalytic poison on the ethylene polymerization process is twofold: the poisons interact with the active centers of the catalyst, thereby suppressing their activity, and also react with the molecule of the resulting polymer, breaking the growing chain. This results in a decrease in the activity of the catalyst due to poisoning of the active centers and a decrease in the molecular weight of the resulting polymer due to premature chain termination. At the same time, the flow index increases and the size of the obtained polymer particles decreases, the density increases, since the comonomer does not react.","PeriodicalId":20254,"journal":{"name":"Plasticheskie massy","volume":"73 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139252289","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}
Pub Date : 2023-11-21DOI: 10.35164/0554-2901-2023-9-10-26-28
M. M. Platonov, A. N. Babin, M. A. Evtekhov, I. A. Sharova, A. A. Shimkin
A new technology for molding polymer composite materials (PCMs) from prepregs has been developed. It is based on on the use of a special “active” core made of a closed-pored gas-filled material (foam), which expands at elevated temperatures and the creates pressure on the prepreg layers inside the closed forming equipment. The paper describes the new technology and the assortment of polymer compositions for the manufacture of the core.
{"title":"Sinterm foam materials for thermocompression molding of PCM products","authors":"M. M. Platonov, A. N. Babin, M. A. Evtekhov, I. A. Sharova, A. A. Shimkin","doi":"10.35164/0554-2901-2023-9-10-26-28","DOIUrl":"https://doi.org/10.35164/0554-2901-2023-9-10-26-28","url":null,"abstract":"A new technology for molding polymer composite materials (PCMs) from prepregs has been developed. It is based on on the use of a special “active” core made of a closed-pored gas-filled material (foam), which expands at elevated temperatures and the creates pressure on the prepreg layers inside the closed forming equipment. The paper describes the new technology and the assortment of polymer compositions for the manufacture of the core.","PeriodicalId":20254,"journal":{"name":"Plasticheskie massy","volume":"107 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139252904","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}
Pub Date : 2023-11-21DOI: 10.35164/0554-2901-2023-9-10-15-17
T. А. Grigorieva, P. А. Sitnikov
The paper considers the possibility of controlling the interfacial interactions of molecules of polar oligomers and the substrate by forming modified supramolecular structures as a result of acid-base interaction of components of the polymer matrix with the surface of nanodispersed oxides. The effect of aluminum oxide on the properties of ED-20 epoxy resin in the presence of the iso-ITA hardener has been studied: microstructure of oxide samples and acid-base properties of the oxide have been studied; the free energy of the surface and the work of adhesion of the material have been determined from the contact angle.
本文探讨了通过聚合物基体成分与纳米分散氧化物表面的酸碱相互作用形成改性超分子结构，从而控制极性低聚物分子与基体的界面相互作用的可能性。研究了氧化铝在异 ITA 硬化剂存在下对 ED-20 环氧树脂性能的影响：研究了氧化物样品的微观结构和氧化物的酸碱特性；根据接触角确定了材料表面的自由能和粘附功。
{"title":"Evaluation of the effect of acid-base nature of inorganic filler on the performance properties of epoxypolymer composite materials","authors":"T. А. Grigorieva, P. А. Sitnikov","doi":"10.35164/0554-2901-2023-9-10-15-17","DOIUrl":"https://doi.org/10.35164/0554-2901-2023-9-10-15-17","url":null,"abstract":"The paper considers the possibility of controlling the interfacial interactions of molecules of polar oligomers and the substrate by forming modified supramolecular structures as a result of acid-base interaction of components of the polymer matrix with the surface of nanodispersed oxides. The effect of aluminum oxide on the properties of ED-20 epoxy resin in the presence of the iso-ITA hardener has been studied: microstructure of oxide samples and acid-base properties of the oxide have been studied; the free energy of the surface and the work of adhesion of the material have been determined from the contact angle.","PeriodicalId":20254,"journal":{"name":"Plasticheskie massy","volume":"270 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139250681","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}
Pub Date : 2023-11-21DOI: 10.35164/0554-2901-2023-9-10-9-11
D. S. Tochiev, I. Dolbin, Khuseyn Kh. Sapaev
The effect of filler-filler and filler-polymer matrix interactions on the strength of polyamide-6-based composites has been studied. It is shown that the strengthening of interactions of both mentioned types leads to an increase in the strength of the investigated composites. Fillers with a layered structure are preferred over dispersed ones.
{"title":"The effect of intra- and interphase interactions on strength of polyamide-6-based composites","authors":"D. S. Tochiev, I. Dolbin, Khuseyn Kh. Sapaev","doi":"10.35164/0554-2901-2023-9-10-9-11","DOIUrl":"https://doi.org/10.35164/0554-2901-2023-9-10-9-11","url":null,"abstract":"The effect of filler-filler and filler-polymer matrix interactions on the strength of polyamide-6-based composites has been studied. It is shown that the strengthening of interactions of both mentioned types leads to an increase in the strength of the investigated composites. Fillers with a layered structure are preferred over dispersed ones.","PeriodicalId":20254,"journal":{"name":"Plasticheskie massy","volume":"29 S1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139253159","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}
Pub Date : 2023-11-21DOI: 10.35164/0554-2901-2023-9-10-48-52
A. Syatkovskiy
An effective way of damping engineering structures is to use elements formed by a combination of hard and soft alternating layers. The outer rigid layers, made of structural materials, take up force infl uences, while the soft layers of viscoelastic polymers provide energy dissipation of the layered structure. The paper summarizes the results of research on the development of thin thermoplastic fi lms of plasticized polyvinyl acetate, polybutylmethacrylate and polymethylmethacrylate which have ultra-high dissipative properties and are used as a vibration-absorbing component of composite structures. It is shown that high damping properties are realized in fi lms with thickness of 0.1 –0.05 mm, which makes it possible to obtain two- and three-layer vibration-absorbing films with an extended temperature interval of effective damping in the metal-polymer-metal structures.
{"title":"Thermoplastic film materials for damping in mechanical engineering","authors":"A. Syatkovskiy","doi":"10.35164/0554-2901-2023-9-10-48-52","DOIUrl":"https://doi.org/10.35164/0554-2901-2023-9-10-48-52","url":null,"abstract":"An effective way of damping engineering structures is to use elements formed by a combination of hard and soft alternating layers. The outer rigid layers, made of structural materials, take up force infl uences, while the soft layers of viscoelastic polymers provide energy dissipation of the layered structure. The paper summarizes the results of research on the development of thin thermoplastic fi lms of plasticized polyvinyl acetate, polybutylmethacrylate and polymethylmethacrylate which have ultra-high dissipative properties and are used as a vibration-absorbing component of composite structures. It is shown that high damping properties are realized in fi lms with thickness of 0.1 –0.05 mm, which makes it possible to obtain two- and three-layer vibration-absorbing films with an extended temperature interval of effective damping in the metal-polymer-metal structures.","PeriodicalId":20254,"journal":{"name":"Plasticheskie massy","volume":"30 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139252213","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}
Pub Date : 2023-11-21DOI: 10.35164/0554-2901-2023-9-10-29-32
V. Svetlichnyi, K. S. Polotnyanshchikov, E. M. Ivan’kova, A. G. Ivanov, G. Vaganov, L. A. Myagkova, E. N. Popova, V. Yudin
The synthesis of polyimide foams obtained as a result of heat treatment of lyophilized water-soluble salts of polyamide acids based on dianhydrides of 3,3’,4,4’-diphenyloxide-, 3,3’,4,4’-benzophenonetetracarboxylic acids and 4,4’-diaminodiphenyl ether was carried out. A study of the structure and morphology of foam samples obtained was carried out. The results of evaluating the mechanical properties and thermal stability of the resulting polyimide foams are presented.
{"title":"Properties of polyimide foams obtained using water-soluble salts of polyamide acids","authors":"V. Svetlichnyi, K. S. Polotnyanshchikov, E. M. Ivan’kova, A. G. Ivanov, G. Vaganov, L. A. Myagkova, E. N. Popova, V. Yudin","doi":"10.35164/0554-2901-2023-9-10-29-32","DOIUrl":"https://doi.org/10.35164/0554-2901-2023-9-10-29-32","url":null,"abstract":"The synthesis of polyimide foams obtained as a result of heat treatment of lyophilized water-soluble salts of polyamide acids based on dianhydrides of 3,3’,4,4’-diphenyloxide-, 3,3’,4,4’-benzophenonetetracarboxylic acids and 4,4’-diaminodiphenyl ether was carried out. A study of the structure and morphology of foam samples obtained was carried out. The results of evaluating the mechanical properties and thermal stability of the resulting polyimide foams are presented.","PeriodicalId":20254,"journal":{"name":"Plasticheskie massy","volume":"52 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139254260","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}
Pub Date : 2023-11-21DOI: 10.35164/0554-2901-2023-9-10-21-25
I. Zlobina, N. Bekrenev, A. S. Egorov, T. M. Alukaev
The effect of ultrasonic and microwave treatment of a monolayer formed by three-dimensional printing from prepregs reinforced with continuous carbon fiber on its three-point bending strength has been investigated. Empirical strain–stress relationships were obtained and the microstructure was investigated. The highest efficiency of electrophysical treatment (increase by 54–72 %) is observed for specimens exposed to microwave field in the deformation range of 0.5–1.3 mm.
{"title":"Influence of electrophysical impacts on the flexural strength of a cured monolayer reinforced with continuous carbon fiber","authors":"I. Zlobina, N. Bekrenev, A. S. Egorov, T. M. Alukaev","doi":"10.35164/0554-2901-2023-9-10-21-25","DOIUrl":"https://doi.org/10.35164/0554-2901-2023-9-10-21-25","url":null,"abstract":"The effect of ultrasonic and microwave treatment of a monolayer formed by three-dimensional printing from prepregs reinforced with continuous carbon fiber on its three-point bending strength has been investigated. Empirical strain–stress relationships were obtained and the microstructure was investigated. The highest efficiency of electrophysical treatment (increase by 54–72 %) is observed for specimens exposed to microwave field in the deformation range of 0.5–1.3 mm.","PeriodicalId":20254,"journal":{"name":"Plasticheskie massy","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139253114","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}
Pub Date : 2023-11-21DOI: 10.35164/0554-2901-2023-9-10-43-47
V. I. Skrebnev, S. L. Serzhan, E. V. Kalugina
The results of tests of materials for hydro-abrasive wear resistance, as well as the erosion values of studied materials, are presented. It has been found that the use of thermoplastic vulcanizates (TPV) as a co-extruded coating of the inner surface of polymer pipe systems can significantly increase the lifetime of slurry pipelines when exposed to hydraulic mixtures, in particular iron ore tailings. In a model test simulating actual operating conditions of the pipeline, it was shown that TPV and thermoplastic polyurethane (TPU) coatings are signifi cantly superior in wear resistance to high-density polyethylene (HDPE) and steel.
{"title":"Research of resistance to hydro-abrasive wear of thermoplastic polymers used to protect the inner surface of hydraulic transport systems","authors":"V. I. Skrebnev, S. L. Serzhan, E. V. Kalugina","doi":"10.35164/0554-2901-2023-9-10-43-47","DOIUrl":"https://doi.org/10.35164/0554-2901-2023-9-10-43-47","url":null,"abstract":"The results of tests of materials for hydro-abrasive wear resistance, as well as the erosion values of studied materials, are presented. It has been found that the use of thermoplastic vulcanizates (TPV) as a co-extruded coating of the inner surface of polymer pipe systems can significantly increase the lifetime of slurry pipelines when exposed to hydraulic mixtures, in particular iron ore tailings. In a model test simulating actual operating conditions of the pipeline, it was shown that TPV and thermoplastic polyurethane (TPU) coatings are signifi cantly superior in wear resistance to high-density polyethylene (HDPE) and steel.","PeriodicalId":20254,"journal":{"name":"Plasticheskie massy","volume":"239 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139250693","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}
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