Journal of Elastomers & Plastics最新文献

A study of mechanical properties of photosensitive resins used in vat photopolymerization process 大桶光聚合工艺中使用的感光树脂的机械性能研究

Journal of Elastomers & Plastics Pub Date : 2024-06-05 DOI: 10.1177/00952443241256632

Frederico de Castro Magalhães, W. O. Leite, J. C. Campos Rubio

{"title":"A study of mechanical properties of photosensitive resins used in vat photopolymerization process","authors":"Frederico de Castro Magalhães, W. O. Leite, J. C. Campos Rubio","doi":"10.1177/00952443241256632","DOIUrl":"https://doi.org/10.1177/00952443241256632","url":null,"abstract":"In recent years, the rapid advancement of Additive Manufacturing (AM) technology has led to resource-efficient processes and reduced gaps between design and product/prototypes. Particularly, sectors like medicine and dentistry stand to gain from these advancements if materials with suitable mechanical characteristics for clinical use are available. One such evolving AM process is VAT photopolymerization through LCD 3D Printer technology, characterized by the curing of photosensitive polymeric resins. This study aims to assess the impact of the angle of layer photopolymerization of UV resin in three positions (horizontal, vertical, and inclined at 45°) using a cost-effective LCD 3D Printer. Additionally, specimens, distributed across five positions on the printing platform, underwent testing with three types of UV light-curing resin. Mechanical properties, including tensile stress, elasticity modulus, and hardness, were evaluated and analyzed statistically. Results indicate that both the chosen manufacturing platform position and the inclined layer angle significantly influence the final characteristics of the workpiece.","PeriodicalId":260382,"journal":{"name":"Journal of Elastomers & Plastics","volume":"326 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141386232","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

Evaluating the thermal, mechanical and swelling behavior of novel silicone and polyurethane additively manufactured O-rings in the presence of organic liquids and military fuels 评估新型硅树脂和聚氨酯添加剂制造的 O 形环在有机液体和军用燃料作用下的热性能、机械性能和膨胀性能

Journal of Elastomers & Plastics Pub Date : 2024-06-02 DOI: 10.1177/00952443241258469

D. L. Luning Prak, Peter Costello, Maya Novack, Brad W. Baker, J. Cowart, David P. Durkin

{"title":"Evaluating the thermal, mechanical and swelling behavior of novel silicone and polyurethane additively manufactured O-rings in the presence of organic liquids and military fuels","authors":"D. L. Luning Prak, Peter Costello, Maya Novack, Brad W. Baker, J. Cowart, David P. Durkin","doi":"10.1177/00952443241258469","DOIUrl":"https://doi.org/10.1177/00952443241258469","url":null,"abstract":"This work investigates the physical properties and swelling behavior of additively manufactured (AM) and traditionally manufactured (TM) polyurethane (PU) and silicone O-rings when exposed to organic liquids and military fuels. Polymer properties were explored using differential scanning calorimetry, thermal gravimetric analysis, and tensile testing, and two AM print orientations (vertical and horizontal) were investigated. The AM polyurethane vertical and horizontal O-rings formed from a selective laser sintering (SLS) process had similar thermal features to each other and differed slightly from the un-sintered polymer in the temperature at which the greatest rate of mass loss occurred in the TGA analysis. The thermal features of the AM silicone O-rings formed using stereolithography (SLA) were more similar to those of a commercial soft silicone than to those of a commercial high purity silicone. The horizontal print orientation for each polymer had a higher tensile strength than its respective vertically oriented print. A 1-week exposure of the AM O-rings to the various organic liquids reduced the tensile strength of AM O-rings by as much as 80% (tensile strength exposed/tensile strength unexposed = 0.2). Polyurethane AM O-rings swelled from 3 to 74% with the greatest swelling occurring from exposure to acetone. Silicone AM O-rings swelled from 13 to 258% with the greatest swelling occurring from exposure to iso-octane. In general, the commercial O-rings swelled less than their AM counterparts, had higher tensile strengths, and had smoother surfaces. The maximum swelling for the PU O-rings occurred at an overall Hansen solubility parameter (HSP) between 18 and 20 MPa1/2, while the maximum for silicone occurred at an HSP of 14.3 MPa1/2. These values are consistent with literature values, which can vary widely.","PeriodicalId":260382,"journal":{"name":"Journal of Elastomers & Plastics","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141273103","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

Comparison of the physico-chemical behavior of two prepregs used for body armor 防弹衣用两种预浸料的物理化学行为比较

Journal of Elastomers & Plastics Pub Date : 2024-05-21 DOI: 10.1177/00952443241256636

M. P. Zylberberg, J. R. d’Almeida

引用次数: 0

Patents for 56(4) 56(4)

Journal of Elastomers & Plastics Pub Date : 2024-05-15 DOI: 10.1177/00952443241256125

引用次数: 0

Preparation and properties of PP/SEBS foam materials PP/SEBS 泡沫材料的制备和性能

Journal of Elastomers & Plastics Pub Date : 2024-05-14 DOI: 10.1177/00952443241254932

Zhao Tian, Zhiqiang Wu, Yunfei Wang, Chunhui Shen, Shanjun Gao

{"title":"Preparation and properties of PP/SEBS foam materials","authors":"Zhao Tian, Zhiqiang Wu, Yunfei Wang, Chunhui Shen, Shanjun Gao","doi":"10.1177/00952443241254932","DOIUrl":"https://doi.org/10.1177/00952443241254932","url":null,"abstract":"In this study, styrene-ethylene-butene-styrene block copolymer (SEBS) is blended with polypropylene (PP) to improve the melt strength of PP. Azodicarbonamide (AC) is used as a chemical foaming agent to prepare PP foaming materials with good mechanical properties by moulding foaming. The melt strength of the material, the content of the nucleating agent and the concentration of the foaming agent will affect the foaming effect of the material. Orthogonal optimization experiments are designed for these three factors to explore the best ratio of foaming materials. The results show that when PP:SEBS = 85:15, the addition amount of nano-SiO2 is 3%, and the content of AC foaming agent is 5%, the cell structure of the foaming material is the best. The cell structure is observed by SEM,the average cell diameter is reduced to 45.73 μm, and the cell density is increased to 4.12 × 106 cells cm−3. The apparent density of the material is measured to be 0.62 g cm−3, which is 32% lower than that of pure PP (0.91 g·cm−3). The tensile strength of PP/SEBS foamed composites is lower than that of pure PP and pure PP foamed materials, but its elongation at break is 124.3% higher than that of pure PP, and 238.8% higher than that of pure PP foamed materials. The bending strength of PP/SEBS foamed material is lower than that of pure PP and pure PP foamed material. The impact strength of PP/SEBS is only 8.4 % lower than that of pure PP, and 60.8 % higher than that of pure PP foamed material.","PeriodicalId":260382,"journal":{"name":"Journal of Elastomers & Plastics","volume":"4 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140979433","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

Reinforcing effects of ground tyre rubber on physical, mechanical, and thermal properties of polyethylene terephthalate 地面轮胎橡胶对聚对苯二甲酸乙二酯物理、机械和热性能的强化作用

Journal of Elastomers & Plastics Pub Date : 2024-05-14 DOI: 10.1177/00952443241254934

Archisman Dasgupta, Prasenjit Dutta

{"title":"Reinforcing effects of ground tyre rubber on physical, mechanical, and thermal properties of polyethylene terephthalate","authors":"Archisman Dasgupta, Prasenjit Dutta","doi":"10.1177/00952443241254934","DOIUrl":"https://doi.org/10.1177/00952443241254934","url":null,"abstract":"This study examines the use of waste and recyclable polyethylene terephthalate (rPET) along with micro-sized ground tire rubber (GTR) to produce a polymer matrix composite (PMC) material. The PMC materials are made in a Twin-screw extruder, with different ratios of rPET to GTR ranging from 90:10 to 50:50. In order to assess the performance of the newly created rPET-GTR matrix composite materials, the physical, mechanical properties are empirically observed. The thermal properties and crystallinity (Xc) of PMC materials are analysed using DSC. SEM and microscopic imaging are used to determine the characteristics of rPET-GTR composite materials, including elemental compositions like carbon, oxygen, and silicon. The functional group and chemical structure are confirmed through IR spectra analysis using FTIR techniques. The inclusion of micro-sized GTR has shown a significant effect on the physical (density = 1.306 - 1.208 g/cm3, water absorption = 1.76%–10.74%, and melt flow index = 8.12 - 12.79 gm/10 min), mechanical (tensile strength = 52.78 – 73.58 MPa, impact strength = 110.64 - 138.44 J/m, hardness = 56.14 - 76.37, and flexural modulus = 66.23 - 106.32 MPa), and thermal (melting temperature = 220.25°C–192.57°C, Xc = 20.30 to 30.58%) properties of rPET. These studies all work together to improve the performance of waste rPET and GTR materials by repurposing them. It helps to promote sustainability, cost-effectiveness, and expands the range of applications (automotive parts, building materials, sports equipment, electrical insulation and prosthetics) for rPET-based composites with potential uses in the polymer industries.","PeriodicalId":260382,"journal":{"name":"Journal of Elastomers & Plastics","volume":"61 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140978952","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

Development of fiber-reinforced polylactic acid filaments using untreated/silane-treated trichosanthes cucumerina fibers for additive manufacturing 使用未经处理/硅烷处理的葫芦科植物纤维开发用于增材制造的纤维增强聚乳酸长丝

Journal of Elastomers & Plastics Pub Date : 2024-01-23 DOI: 10.1177/00952443241229186

V. Raghunathan, V. Ayyappan, S. Rangappa, S. Siengchin

{"title":"Development of fiber-reinforced polylactic acid filaments using untreated/silane-treated trichosanthes cucumerina fibers for additive manufacturing","authors":"V. Raghunathan, V. Ayyappan, S. Rangappa, S. Siengchin","doi":"10.1177/00952443241229186","DOIUrl":"https://doi.org/10.1177/00952443241229186","url":null,"abstract":"Multi-material additive manufacturing is gaining importance due to the enhancement of properties by utilizing different materials in a single additive process, especially in 3D printing. The prime motive is the need for eco-friendly materials, with the waste-to-wealth concept being the current global trend. Trichosanthes Cucumerina stem fiber, which is obtained from the discarded stem of Trichosanthes Cucumerina plant, is used in this work; the treatment of the Trichosanthes Cucumerina fibers was done using silane. Six filaments were developed with varying untreated/silane-treated Trichosanthes Cucumerina contents (3, 6, and 9%) compared with pure PLA filaments for 3D printing. Developed filaments were assessed for ultimate tensile strength, diameter variation, differential scanning calorimetry, water absorption, morphological and surface roughness. The test results elucidated that the 6% silane-treated Trichosanthes Cucumerina fiber-reinforced/PLA filament had the highest tensile strength of 63.5 MPa with better fiber distribution. The 3% silane-treated Trichosanthes Cucumerina fiber-reinforced/PLA filament had the least diameter deviation of 0.0015 mm. Based on the test data, the 6% silane-treated Trichosanthes Cucumerina fiber-reinforced/PLA filament can be utilized to prepare biodegradable components.","PeriodicalId":260382,"journal":{"name":"Journal of Elastomers & Plastics","volume":"134 39","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139604769","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

Optimization of impact strength and elastic modulus of polyamide-based nanocomposites: Using particle swarm optimization method 优化聚酰胺基纳米复合材料的冲击强度和弹性模量：使用粒子群优化法

Journal of Elastomers & Plastics Pub Date : 2024-01-19 DOI: 10.1177/00952443241229145

Valiollah Panahizadeh, Ehsan Hamidi, Sajjad Daneshpayeh, Hosna Saeifar

{"title":"Optimization of impact strength and elastic modulus of polyamide-based nanocomposites: Using particle swarm optimization method","authors":"Valiollah Panahizadeh, Ehsan Hamidi, Sajjad Daneshpayeh, Hosna Saeifar","doi":"10.1177/00952443241229145","DOIUrl":"https://doi.org/10.1177/00952443241229145","url":null,"abstract":"In the current paper, the mechanical properties of polymeric nanocomposites based on a two-phase PA6/EPDM matrix reinforced with carbon nanotubes have been optimized. The compounds consist of 0, 1, 2, and 3 wt% carbon nanotubes, 5 and 10 wt% EPDM-g-MA as a compatibilizer, and 10 and 20 wt% EPDM were made by an internal mixer. The mechanical tests were done to measure mechanical properties of the samples. In addition, SEM images were used to investigate the dispersion quality of nanotubes in the polymer matrix. From SEM findings, adding up to 2 wt% nanotubes in the matrix accompanied with a proper distribution and dispersion, whereas adding 3 wt% nanotubes into matrix results in inappropriate dispersion and agglomeration. Furthermore, samples including high level of EPDM-g-MA displayed better dispersion of nanotubes in the matrix. Moreover, the findings of mechanical tests depicted that the presence of EPDM and compatibilizing agent causes 12.5% and 22% increase in impact strength, respectively. Furthermore, the addition of nanotubes up to 2 wt% has enhanced the elastic modulus of the compounds. Finally, the optimization results of the PSO method indicate that adding 13.31 wt% EPDM, 9.91 wt% EPDM-g-MA and 2.61 wt% nanotubes progress the elastic modulus (by 36%) and impact strength (by 33%) of the matrix.","PeriodicalId":260382,"journal":{"name":"Journal of Elastomers & Plastics","volume":"72 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139613172","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

In situ formed poly(ε-caprolactone) as a novel non-toxic plasticizer of poly(vinyl chloride) 原位成型聚（ε-己内酯）作为聚氯乙烯的新型无毒增塑剂

Journal of Elastomers & Plastics Pub Date : 2024-01-17 DOI: 10.1177/00952443241227604

R. Kalousková, Edita Moravcová, Lenka Vránová, Zdeněk Hrdlička, Jiří Brožek

引用次数: 0

Patents 专利

Journal of Elastomers & Plastics Pub Date : 2024-01-16 DOI: 10.1177/00952443241228362

引用次数: 0

Journal of Elastomers &amp; Plastics最新文献

Journal of Elastomers & Plastics最新文献