Journal of Elastomers and Plastics最新文献_第8页

Flowing Performance, Microstructures, and Fracture Toughness of Dynamically Vulcanized PP/EPDM Blends 动态硫化PP/EPDM共混物的流动性能、微观结构和断裂韧性

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2010-01-01 DOI: 10.1177/0095244309349481

Hui-Juan Huang, Wei Yang, Bang-hu Xie, Qing-Guo Li, Ming‐bo Yang

{"title":"Flowing Performance, Microstructures, and Fracture Toughness of Dynamically Vulcanized PP/EPDM Blends","authors":"Hui-Juan Huang, Wei Yang, Bang-hu Xie, Qing-Guo Li, Ming‐bo Yang","doi":"10.1177/0095244309349481","DOIUrl":"https://doi.org/10.1177/0095244309349481","url":null,"abstract":"The fracture behavior of polypropylene/ethylene—propylene— diene terpolymer (100/8) blends with different microstructure was investigated using the essential work of fracture approach. Ethylene—propylene—diene terpolymer and dicumyl peroxide were mixed in a single-screw extruder at 140°C, and the crosslinking reaction had hardly taken place at this temperature. Then the reactive extrusion of ethylene—propylene—diene terpolymer and polypropylene was performed on a twin-screw extruder at a temperature range of 160—210°C and ethylene—propylene—diene terpolymer was crosslinked in this process. Various crosslinking density of ethylene—propylene—diene terpolymer in polypropylene/ethylene—propylene—diene terpolymer (100/8) blends was obtained by varying the concentration of dicumyl peroxide. With increasing dicumyl peroxide concentration, melt flow rate of the blends gradually increased but the increasing trend was slowed up. The degradation reaction of polypropylene was markedly restrained by adopting such a processing method. From the result of scanning electron microscopy, the size of ethylene—propylene—diene terpolymer particles was reduced and a more uniform particle size distribution was obtained. The existence of polypropylene/ ethylene—propylene—diene terpolymer graft copolymer was demonstrated by differential scanning calorimetry and the negative effect of the graft copolymer on the crystalline rate of polypropylene macromolecules which were grafted onto ethylene—propylene—diene terpolymer chains was validated. The specific essential work of fracture (we) increased markedly with increasing dicumyl peroxide concentration for the blends prepared. When the concentration of dicumyl peroxide was 0.3 wt% of ethylene—propylene—diene terpolymer content, the value of we of the dynamic vulcanized blends was about 165% as that of polypropylene/ethylene—propylene—diene terpolymer simple blends or polypropylene, while the specific plastic work (βwp) was still larger than that of polypropylene.","PeriodicalId":15644,"journal":{"name":"Journal of Elastomers and Plastics","volume":"113 1","pages":"75 - 91"},"PeriodicalIF":1.7,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79236936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Poly(Methyl Methacrylate-co-Styrene) Modified with Hydrogenated Natural Rubber 氢化天然橡胶改性聚甲基丙烯酸甲酯-co-苯乙烯

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2010-01-01 DOI: 10.1177/0095244309345407

S. Thawornwisit, K. Charmondusit, G. Rempel, N. Hinchiranan, P. Prasassarakich

引用次数: 3

Compatibilizing Effect of Fluororubber Grafted by γ-Methacryloxypropyltrimethoxysliane in Fluororubber/Silicone Rubber Blends γ-甲基丙烯氧基丙基三甲氧基苯乙烯接枝氟橡胶在氟橡胶/硅橡胶共混物中的增容作用

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2009-11-01 DOI: 10.1177/0095244309345409

Jianhua Guo, Xingrong Zeng, Quankun Luo

引用次数: 14

Characterization of Microwave-Devulcanized Composites of Ground SBR Scraps SBR碎料微波脱硫复合材料的研究

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2009-11-01 DOI: 10.1177/0095244309345411

Aline Zanchet, L. N. Carli, M. Giovanela, J. S. Crespo, C. H. Scuracchio, R. Nunes

{"title":"Characterization of Microwave-Devulcanized Composites of Ground SBR Scraps","authors":"Aline Zanchet, L. N. Carli, M. Giovanela, J. S. Crespo, C. H. Scuracchio, R. Nunes","doi":"10.1177/0095244309345411","DOIUrl":"https://doi.org/10.1177/0095244309345411","url":null,"abstract":"The recycling of waste rubber has considerable significance in terms of environmental protection and energy conservation. Considering that most of the relevant literature is concerned with tire recycling, the objective of this study is to develop and characterize styrene-butadiene rubber composites containing only industrial rubber scraps devulcanized by microwave. The styrene-butadiene rubber extruded profile scraps were collected and ground under ambient conditions. The obtained powder styrene-butadiene rubber-r was physically, thermally, and chemically characterized. From the devulcanized styrene-butadiene rubber-r two composites were prepared, varying the exposure time of the powder in the microwave (3 and 4 min). These composites were compared to a control sample supplied by the industry from which the styrene-butadiene rubber extruded profile scraps were collected. Vulcanization parameters were determined by oscillatory disk rheometry. Vulcanized composites were characterized by crosslink density and physical-mechanical properties (Shore A hardness, tensile and tear strength, and compression set) before and after a postcure process. The mechanical properties of the compositions were ∼25% for tensile strength and 41% for tear strength compared to the control sample. The results for the crosslink density verified those for the mechanical properties of the composites.","PeriodicalId":15644,"journal":{"name":"Journal of Elastomers and Plastics","volume":"194 1","pages":"497 - 507"},"PeriodicalIF":1.7,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75882458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 48

Studies on the Effect of Novel Antistatic Agent on the Properties of Polyurethane Foam 新型抗静电剂对聚氨酯泡沫塑料性能影响的研究

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2009-11-01 DOI: 10.1177/0095244309340984

Jincheng Wang, K. Yang, X. Zheng

引用次数: 2

Comparison of Interaction of Aromatic Solvents in Hybrid and Textile Biocomposites 芳香族溶剂在杂化和纺织生物复合材料中的相互作用比较

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2009-11-01 DOI: 10.1177/0095244309099083

M. John, Sabu Thomas, K. T. Varughese

引用次数: 1

Admicellar Polymerization of Polystyrene on Natural Rubber Particles 聚苯乙烯在天然橡胶颗粒上的胶束聚合

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2009-07-22 DOI: 10.1177/0095244309340982

R. Magaraphan, Vijitra Srinarang

{"title":"Admicellar Polymerization of Polystyrene on Natural Rubber Particles","authors":"R. Magaraphan, Vijitra Srinarang","doi":"10.1177/0095244309340982","DOIUrl":"https://doi.org/10.1177/0095244309340982","url":null,"abstract":"Admicellar polymerization is a reaction for coating a thin-film of polymer on a surface. The process consists of the polymerization of the adsolubilized monomer in the hydrophobic regions of the surfactant bilayers that adsorbed on the substrate surface. In this research, the admicellar polymerization of polystyrene was carried out using micron to submicron size natural rubber particles as substrates. Cetyl trimethyl ammonium bromide (CTAB) was used to form the surfactant template. The adsorption isotherm of CTAB was determined in the absence and presence of salt. Styrene adsolubilization was found to increase with initial styrene concentration and in the presence of salt. The synthesized polystyrene in the molecular bilayer of micelles surrounding the natural rubber particles was characterized by optical microscope, Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). The observed morphology of the rubber particles after reaction was clearly two phases, a core-shell structure having the natural rubber core covered by the polystyrene shell. These core-shell particles were spheres and aggregated strongly in the emulsion. Effect of initiator type was investigated. The synthesized products showed core-shell morphology, which was still obtained after heating but after cooling phase inversion occurred and showed polystyrene-rich core and natural rubber-rich shell. Thin lamellar of both components was found in both polystyrene-rich core and natural rubber-rich shell making unique morphology and extended single transition of thermal decomposition. FTIR results show characteristic peaks of natural rubber and polystyrene and the absorbance of styrene increases with increasing styrene content. The TGA result showed that the decomposition temperatures of the products were altered by the amount of polystyrene.","PeriodicalId":15644,"journal":{"name":"Journal of Elastomers and Plastics","volume":"41 1","pages":"457 - 477"},"PeriodicalIF":1.7,"publicationDate":"2009-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79613229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Application of Factorial Design in Determination of Physico-Mechanical Properties of NR/SBR Alloy — Influence of Sulfur Curing System 析因设计在测定NR/SBR合金物理力学性能中的应用——硫固化体系的影响

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2009-07-22 DOI: 10.1177/0095244309342011

R. Manshaie, M. Hafezi, S. Nouri Khorasani

引用次数: 3

Effect of Metallic Salts of Glutaric Acid on the Formation of β-crystalline Form in Isotactic Polypropylene 戊二酸金属盐对等规聚丙烯中β-结晶形成的影响

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2009-07-13 DOI: 10.1177/0095244309339789

Q. Dou, Quliang Lu, Huai-Dong Li

引用次数: 7

Effect of Kaolin on Adhesion Property of Epoxidized Natural Rubber-based Pressure-sensitive Adhesive Using Gum Rosin as the Tackifier 高岭土对松香为增粘剂的环氧化天然橡胶基压敏胶粘接性能的影响

IF 1.7 4区材料科学

Journal of Elastomers and Plastics Pub Date : 2009-07-13 DOI: 10.1177/0095244309340980

B. T. Poh, C.E. Chew

引用次数: 16