Synthesis and properties of a nano-silica modified environmentally friendly polyurethane adhesive

RSC Advances ◽  
2015 ◽  
Vol 5 (56) ◽  
pp. 44990-44997 ◽  
Author(s):  
Guo Jia-Hu ◽  
Liu Yu-Cun ◽  
Chai Tao ◽  
Jing Su-Ming ◽  
Ma Hui ◽  
...  
Keyword(s):  
Environmentally Friendly ◽  
Waterborne Polyurethane ◽  
Nano Silica ◽  
Polyurethane Adhesive ◽  
High Adhesion ◽  
Adhesion Performance

In this study, a nano-SiO2 modified waterborne polyurethane (WPU) adhesive with remarkably low VOC content and high adhesion performance was successfully synthesized via in situ polymerization.

Comparative study of in situ polymerized waterborne polyurethane/nano-silica composites and polyethersiloxanediol-modified polyurethane

2016 ◽  
Vol 30 (1) ◽  
pp. 107-120 ◽  
Author(s):  
Han Yan-ting ◽  
Cheng Zheng ◽  
Dong Wei ◽  
Zhang Fan ◽  
Xin Zhong-yin
Keyword(s):  
Temperature Region ◽  
Film Formation ◽  
Waterborne Polyurethane ◽  
Nano Silica ◽  
Elongation At Break ◽  
Lower Elongation ◽  
Higher Temperature ◽  
Lower Temperature ◽  
Lower Temperature Region

The waterborne polyurethane/nano-silica composites (WPU/nano-silica, WPUS) and WPU composites modified by polyethersiloxanediol (WPUPES) were prepared, respectively. The properties of WPUS and WPUPES were investigated by various characterizations. The results showed both WPUS and WPUPES had better waterproof property and thermal stability than neat WPU. However, WPUPES has a lower elongation at break due to the higher micro-phase separation. This is ascribed to migration and aggregation of siloxane segments during the film formation. The tensile strength of WPUS was higher than that of neat WPU. This is attributed to the WPUS chain restriction caused by the network and physical cross-link points of nano-silica particles. Moreover, the glass transition temperature of WPUS shifted to higher temperature region while that of WPUPES shifted to lower temperature region.

Novel environmentally friendly waterborne polyurethane/hollow Ni0.3Zn0.5Fe2O4 nanocomposite films: superior magnetic and mechanical properties

RSC Advances ◽  
2016 ◽  
Vol 6 (79) ◽  
pp. 75440-75448 ◽  
Author(s):  
Suli Chen ◽  
Tao Jin ◽  
Wenling Wu ◽  
Guanghui Zhao
Keyword(s):  
Mechanical Properties ◽  
Environmentally Friendly ◽  
Waterborne Polyurethane ◽  
Nanocomposite Films

Superparamagnetic nanocomposite films based on waterborne polyurethane and hollow Ni0.3Zn0.5Fe2O4 nanospheres (WPU/h-NZFO) were synthesized via an in situ polymerization technique.

Catalytic asymmetric hydrogenation reaction by in situ formed ultra-fine metal nanoparticles in live thermophilic hydrogen-producing bacteria

Nanoscale ◽  
2021 ◽  
Author(s):  
Wei Bing ◽  
Faming Wang ◽  
Yuhuan Sun ◽  
Jinsong Ren ◽  
Xiaogang Qu
Keyword(s):  
Metal Nanoparticles ◽  
Catalytic Hydrogenation ◽  
Asymmetric Hydrogenation ◽  
Environmentally Friendly ◽  
Hydrogenation Reaction ◽  
Highly Efficient ◽  
Hydrogenation Reactions ◽  
Live Bacteria ◽  
Catalytic Asymmetric Hydrogenation

An environmentally friendly biomimetic strategy has been presented and validated for the catalytic hydrogenation reaction in live bacteria. In situ formed ultra-fine metal nanoparticles can realize highly efficient asymmetric hydrogenation reactions.

Role of in situ added cellulose nanocrystals as rheological modulator of novel waterborne polyurethane urea for 3D-printing technology

Cellulose ◽  
2021 ◽  
Author(s):  
Julen Vadillo ◽  
Izaskun Larraza ◽  
Tamara Calvo-Correas ◽  
Nagore Gabilondo ◽  
Christophe Derail ◽  
...  
Keyword(s):  
3D Printing ◽  
Cellulose Nanocrystals ◽  
Waterborne Polyurethane ◽  
Printing Technology ◽  
3D Printing Technology

In situ fabrication of wood flour/nano silica hybrid and its application in polypropylene‐based wood‐plastic composites

2019 ◽  
Vol 41 (2) ◽  
pp. 573-584 ◽  
Author(s):  
Yuanbin Ma ◽  
Hui He ◽  
Bai Huang ◽  
Huaishuai Jing ◽  
Zijin Zhao
Keyword(s):  
Wood Flour ◽  
Nano Silica ◽  
Wood Plastic Composites ◽  
In Situ Fabrication ◽  
Plastic Composites ◽  
Silica Hybrid

scholarly journals A new environmentally-friendly route to in situ form a high-corrosion-resistant nesquehonite film on pure magnesium

RSC Advances ◽  
2020 ◽  
Vol 10 (58) ◽  
pp. 35480-35489 ◽  
Author(s):  
Xianlong Cao ◽  
Quanyou Ren ◽  
Youkun Yang ◽  
Xianglong Hou ◽  
Yongbo Yan ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Environmentally Friendly ◽  
Pure Magnesium ◽  
Protective Film ◽  
High Corrosion Resistance ◽  
Corrosion Resistant ◽  
High Corrosion

A nesquehonite protective film with high corrosion resistance was prepared on pure Mg via a new environmentally-friendly in situ carbonation route.

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