Molecular Weight Effects on the Processing, Thermal, and Mechanical Properties of Oligomeric Bisphenol a Phthalonitrile Resins

2019 ◽  
Author(s):  
Tristan Butler ◽  
Stephen Deese ◽  
Madeleine Taylor ◽  
Matt Laskoski
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Bisphenol A ◽  
Thermal And Mechanical Properties

Influence of molecular weight on thermal and mechanical properties of bisphenol A‐based phthalonitrile resins

2021 ◽  
pp. 51783
Author(s):  
Tristan Butler ◽  
Caleb Bunton ◽  
Heonjune Ryou ◽  
Boris Dyatkin ◽  
Nickolaus Weise ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Bisphenol A ◽  
Thermal And Mechanical Properties

Weldability of pipe grade polyethylenes as realized from thermal and mechanical properties assessments

2016 ◽  
Vol 36 (8) ◽  
pp. 853-860 ◽  
Author(s):  
Vahabodin Goodarzi ◽  
Zahed Ahmadi ◽  
Mohammad Reza Saeb ◽  
Farkhondeh Hemmati ◽  
Mehdi Ghaffari ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Analysis ◽  
Molecular Weight ◽  
Aging Process ◽  
Pipe Production ◽  
Lamellar Thickness ◽  
Thermal And Mechanical Properties ◽  
Scanning Calorimetry ◽  
Injection Molded ◽  
The One

Abstract Since polyethylene (PE) has been widely accepted for the production of high-pressure fluid conveying pipelines, studies devoted to weldability of PE connections were always of major importance. In this study, two industrial PE grades designed for pipe production, namely PE80 and PE100, were injection molded, cut, and then welded as PE100-PE100, PE100-PE80, and PE80-PE80. The heat-welded joints were assessed by differential scanning calorimetry and tensile measurements. The results obtained from thermal and mechanical analyses were compared with equivalents for aged samples. Thermal analysis revealed that the melting point of the PE100-PE100 sample is obviously larger than the one for the PE80-PE80 joint, for the PE80 chains deteriorate the crystallization of PE100. Further, the PE80-PE80 sample showed the lowest lamellar thickness and crystalline molecular weight among the studied joints. The aging process was found to increase lamellar thickness and molecular weight, though in the PE100-PE100 sample such quantities very limitedly increased. The yield stress of aged joints was higher than that for just-prepared samples, while an inverse trend was seen for strain at break. From a practical viewpoint, the PE100-PE100 welds offer better properties.

Influence of molecular weight on the thermal and mechanical properties of polyurethane elastomers based on 4,4′-diisocyanato dicyclohexylmethane

1992 ◽  
Vol 44 (11) ◽  
pp. 2029-2035 ◽  
Author(s):  
Hans F. Hespe ◽  
Alfred Zembrod ◽  
Farhad J. Cama ◽  
Christopher W. Lantman ◽  
Stephen D. Seneker
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Thermal And Mechanical Properties ◽  
Polyurethane Elastomers

Curing, Thermal and Mechanical Properties of Liquid Crystalline p-SBPEPB/BPAER/DDE System

2011 ◽  
Vol 239-242 ◽  
pp. 3253-3256 ◽  
Author(s):  
Li Huo ◽  
Jun Gang Gao ◽  
Yong Gang Du
Keyword(s):  
Mechanical Properties ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Impact Strength ◽  
Bisphenol A ◽  
Liquid Crystalline ◽  
Curing Agent ◽  
Thermal And Mechanical Properties ◽  
Component System

The curing, thermal and mechanical properties of bi-component system for bisphenol A epoxy resin (BPAER) modified by liquid crystalline Sulfonyl bis(4,1-phenylene)bis[4-(2,3-epoxypro pyloxy)benzoate] (p-SBPEPB), with 4,4'-diaminodiphenyl ether (DDE) as a curing agent, were investigated. The effect of the different liquid crystalline contents and the heating rate on curing reaction was discussed. The results show that the curing peak temperature decreases, curing rate increases, the glass transition temperature (Tg)and impact strength all increase with adding of liquid crystalline p-SBPEPB when the content is not over 8wt%.

Influence of amine‐terminated additives on thermal and mechanical properties of diglycidyl ether of bisphenol A (DGEBA) cured epoxy

2019 ◽  
Vol 137 (8) ◽  
pp. 48404 ◽  
Author(s):  
Zahra Baig ◽  
Nadia Akram ◽  
Khalid Mahmood Zia ◽  
Muhammad Saeed ◽  
Muhammad Kaleem Khosa ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bisphenol A ◽  
Diglycidyl Ether ◽  
Thermal And Mechanical Properties
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