scholarly journals Mechanical properties of epoxy-polyurethane polymer blends

2006 ◽  
Vol 3 (4) ◽  
pp. 637-642 ◽  
Author(s):  
Baghdad Science Journal
Keyword(s):  
Mechanical Properties ◽  
Polymer Blends ◽  
Thick Plates ◽  
Binary Polymer

Configured binary polymer blends of epoxy and Polyurethane was chosen varying proportions of these materials led to the production of homogeneous mixtures of Althermust Althermust and descent was poured polyurethane models required in the form of 4 mm thick plates

Mechanical Properties of Polymer Blends Having Shape-memory Capability

2009 ◽  
Vol 1190 ◽  
Author(s):  
Marc Behl ◽  
Ute Ridder ◽  
Wolfgang Wagermaier ◽  
Steffen Kelch ◽  
Andreas Lendlein
Keyword(s):  
Mechanical Properties ◽  
Polymer Blends ◽  
Shape Memory ◽  
Design Principle ◽  
Shape Memory Polymers ◽  
Multiblock Copolymers ◽  
New Class ◽  
Binary Polymer ◽  
Permanent Shape ◽  
Switching Temperature

AbstractThe general design principle of shape-memory polymers (SMP) requires two key compo-nents: covalent or physical crosslinks (hard domains) determining the permanent shape and switching domains fixing the temporary shape as well as influencing the switching temperature Tsw. In conventional thermoplastic SMP hard and switching domains determining segments are combined in one macromolecule, e.g. block copolymers such as polyurethanes. Recently, binary polymer blends having shape-memory properties, from two different multiblock copolymers have been presented, whereby the first one is providing the segments forming hard domains and the second one the segments forming the switching domains. Besides the shape-memory proper-ties, the mechanical properties of such materials are application relevant. Here we investigate how the blend composition influences mechanical properties of this new class of shape-memory materials.

scholarly journals The effects of morphological variation and polymer/polymer interface on the tensile modulus of binary polymer blends: a modeling approach

2020 ◽  
Vol 41 (2) ◽  
pp. 109-118
Author(s):  
Esmail Sharifzadeh ◽  
Yasahr Amiri
Keyword(s):  
Polymer Blends ◽  
Morphological Variation ◽  
Tensile Modulus ◽  
Network System ◽  
Test Results ◽  
Model Accuracy ◽  
Acceptable Accuracy ◽  
Polymer Interface ◽  
Binary Polymer ◽  
Neural Network System

Abstract In this work, the effects of the morphological variation and the polymer/polymer interface on the tensile modulus of binary polymer blends were evaluated using a combined modeling method. The characteristics of the polymer/polymer interface region were evaluated using a neural network system and the results were used to improve the analytical model. The model accuracy was investigated by comparing its predictions with the tensile test results of some prepared iPP/PA blend samples and also some other data from literature which revealed an acceptable accuracy (error < 5%).

scholarly journals Mechanical and Morphological Properties of Bio-Phenolic/Epoxy Polymer Blends

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 773
Author(s):  
Ahmad Safwan Ismail ◽  
Mohammad Jawaid ◽  
Norul Hisham Hamid ◽  
Ridwan Yahaya ◽  
Azman Hassan
Keyword(s):  
Mechanical Properties ◽  
Phase Separation ◽  
Polymer Blends ◽  
Epoxy Polymer ◽  
Flexural Modulus ◽  
Polymeric Materials ◽  
Morphological Properties ◽  
Comparison Results ◽  
Unique Material ◽  
Different Types

Polymer blends is a well-established and suitable method to produced new polymeric materials as compared to synthesis of a new polymer. The combination of two different types of polymers will produce a new and unique material, which has the attribute of both polymers. The aim of this work is to analyze mechanical and morphological properties of bio-phenolic/epoxy polymer blends to find the best formulation for future study. Bio-phenolic/epoxy polymer blends were fabricated using the hand lay-up method at different loading of bio-phenolic (5 wt%, 10 wt%, 15 wt%, 20 wt%, and 25 wt%) in the epoxy matrix whereas neat bio-phenolic and epoxy samples were also fabricated for comparison. Results indicated that mechanical properties were improved for bio-phenolic/epoxy polymer blends compared to neat epoxy and phenolic. In addition, there is no sign of phase separation in polymer blends. The highest tensile, flexural, and impact strength was shown by P-20(biophenolic-20 wt% and Epoxy-80 wt%) whereas P-25 (biophenolic-25 wt% and Epoxy-75 wt%) has the highest tensile and flexural modulus. Based on the finding, it is concluded that P-20 shows better overall mechanical properties among the polymer blends. Based on this finding, the bio-phenolic/epoxy blend with 20 wt% will be used for further study on flax-reinforced bio-phenolic/epoxy polymer blends.

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