Effect of poly(amidoamine) dendrimer-grafted silica nanoparticles and different chain extenders on thermal properties of epoxy-modified polyurethane composites

2021 ◽  
Vol 44 (3) ◽  
Author(s):  
Mohammadreza Izadi ◽  
Hanieh Mardani ◽  
Hossein Roghani-Mamaqani ◽  
Mehdi Salami-Kalajahi
Keyword(s):  
Thermal Properties ◽  
Silica Nanoparticles ◽  
Chain Extenders ◽  
Polyurethane Composites

Mechanical and Thermal Properties of Epoxy Composites Containing Amine-Modified Silica Nanoparticles

2017 ◽  
Vol 737 ◽  
pp. 262-268
Author(s):  
Hye Ryun Lee ◽  
Moon Il Kim ◽  
Hye Ryun Na ◽  
Choong Sun Lim ◽  
Bong Kuk Seo
Keyword(s):  
Tensile Strength ◽  
Glass Transition ◽  
Thermal Properties ◽  
Silica Nanoparticles ◽  
Flexural Modulus ◽  
Silica Particles ◽  
Test Machine ◽  
Mechanical And Thermal Properties ◽  
Modified Silica ◽  
Modified Silica Nanoparticles

Epoxy/silica composites were prepared using aminopropyl triethoxysilane (APTES)-modified silica nanoparticles in the sol state. Different sizes of silica particles were synthesized and they were applied into the epoxy/silica composites with different compositions. The mechanical and thermal properties of the composites were investigated and compared with those of pristine epoxy composite. The structure and morphology of the modified silica nanoparticles and epoxy/silica composites were analyzed using field emission scanning electron microscope. The flexural modulus and tensile strength of the epoxy/silica composites were investigated by universal test machine (UTM). Also, glass transition and thermal stability were investigated using thermomechanical analyzer (TMA). Sizes of silica particles in sol state were controlled by using different concentration of the accelerator. The tensile strength of epoxy/silica composites containing 20 wt% of 30 nm silica was found to be 37.98 MPa. In addition, the glass transition temperature (Tg) decreased with increasing silica particle sizes.

scholarly journals Effect of sisal fiber filler on thermal properties of bio-based polyurethane composites

2017 ◽  
Vol 130 (1) ◽  
pp. 113-122 ◽  
Author(s):  
Ewa Głowińska ◽  
Janusz Datta ◽  
Paulina Parcheta
Keyword(s):  
Thermal Properties ◽  
Sisal Fiber ◽  
Polyurethane Composites

Morphology and thermal properties of polyurethane elastomer based on representative structural chain extenders

2017 ◽  
Vol 653 ◽  
pp. 116-125 ◽  
Author(s):  
Wanqing Lei ◽  
Changqing Fang ◽  
Xing Zhou ◽  
Youliang Cheng ◽  
Rong Yang ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Polyurethane Elastomer ◽  
Chain Extenders
Sign in / Sign up

Export Citation Format

Share Document