Results 1 to 10 of about 761 (109)
Applicazione della meccanica della frattura viscoelastica alla previsione della vita di tubi in polibutene [PDF]
Fracture and Structural Integrity, 2013 Isotactic polybutene-1 (i-PB1) is a polymer used for the manufacturing of pressurized pipes. In this work two grades of i-PB1 with a different degree of isotacticity have been investigated; they have been supplied by Basell Polyolefins. Fracture tests
Luca Andena +2 more
doaj +6 more sources
Lamellar thickness and stretching temperature dependency of cavitation in semicrystalline polymers. [PDF]
PLoS ONE, 2014 Polybutene-1 (PB-1), a typical semicrystalline polymer, in its stable form I shows a peculiar temperature dependent strain-whitening behavior when being stretched at temperatures in between room temperature and melting temperature of the crystallites ...
Yaotao Wang +4 more
doaj +4 more sources
Synthesis of Isotactic Polybutene-1 with Ziegler-Natta Catalyst [PDF]
علوم و تکنولوژی پلیمر, 2022 Hypothesis: Butene-1 is in excess in the polyolefin plants of Iran. Considering the properties of isotactic polybutene-1, including high creep and environmental stress cracking resistances, excellent elastic reversibility and good chemical abrasion ...
shokoufeh Hakim +2 more
doaj +1 more source
LDPE and poly(1-butene) blends: Morphology, crystallinity and rheological properties [PDF]
Polyolefins Journal, 2021 In this work, the compatibility and crystallinity of low density polyethylene (LDPE) and polybutene-1 (PB-1) blends were studied. Various blends of LDPE/PB-1 containing 5, 10 and 20 wt.% PB-1 were prepared in a corotating twin-screw extruder and ...
Reza Poorghasemi, Yousef Jahani
doaj +1 more source
An improved method for the high isotacticity measurement of polybutene-1
Polymer Testing, 2021 High isotactic polybutene-1 (HiPB) plays important roles in presenting outstanding resistance to creep and crack at high temperature. Therefore, rapid and accurate measurement of the HiPB is extremely important for both synthesis and application of ...
Weiping Zheng +4 more
doaj +1 more source
The influence of branching efficiency on the rheology and morphology of melt state long chain branched polypropylene/polybutene-1 blends [PDF]
Polyolefins Journal, 2019 In this study, the compatibility of the blends of polypropylene (PP) and polybutene-1(PB-1) homopolymer before and after long chain branching process were studied.
Ali Foroozan +2 more
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Polymer Testing, 2023 Isotactic polybutene-1 (PB)/isotactic polypropylene (PP) blends, typical crystalline/crystalline polymer blends with low-melting-temperature (Tm) PB and high-Tm PP, exhibit complicated interactions between their components in both molten and solid states.
Xiangjie Yan +5 more
doaj +1 more source
Polymer Testing, 2023 The creep resistance of polymer determines the dimensional stability of product under stress. The isotactic polybutene-1 (iPB) with outstanding high-temperature creep resistance and stress-crack resistance is applied widely in the field of hot-water ...
Yuanjin Zhao +3 more
doaj +1 more source
Journal of CO2 Utilization, 2023 As a polycrystalline polymer, isotactic polybutene-1 (iPB-1) will form different crystalline structures when it crystallizes under different conditions. In this work, we found a simple method to manipulate the cell structure of iPB-1 foams by controlling
Weijie Li +4 more
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Polymer Testing, 2023 Investigating the structure of spherulite is instructive for better understanding the polymer crystallization process and mechanism, which is critical for the design and manufacture of polymeric products with high performance. Wide angle X-ray scattering
Peng Rao +5 more
doaj +1 more source