scholarly journals A Study on Making Rigid Polyurethane Foams from Vietnam Rubber Seed Oil-Based Polyol by Using Water as a Single Blowing Agent

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Nguyen Thi Thuy ◽  
Pham Ngoc Lan
Keyword(s):  
Cell Size ◽  
Cell Walls ◽  
Seed Oil ◽  
Polyurethane Foams ◽  
Dibutyltin Dilaurate ◽  
Rubber Seed Oil ◽  
Rubber Seed ◽  
Rigid Polyurethane Foams ◽  
Blowing Agent ◽  
Foaming Process

In this work, for making rigid polyurethane foams, only water was used to serve as a blowing agent. Vietnam rubber seed oil-based polyol was also used. Following our previous research results, water content was fixed at 4 wt.% and glycerol content at 3 wt.%, as compared to biopolyol. The effect of the NCO/OH ratio, main catalyst (dibutyltin dilaurate), cocatalyst (triethylamine), and surfactant content as well as the surfactants on performances of foams was investigated through compressive strength, density, cell size, and size distribution. A suitable formulation for making foam by using biopolyol made from rubber seed oil was established. In parallel with it, foam based on commercial polyol derived from petroleum was also manufactured. The characteristics of the foaming process were assessed. The mechanical properties, thermal behavior, water absorption, and dimensional stability of foams were evaluated. The cellular morphology study shows that the cells of foam based on biopolyol were closed and rather uniform; however, cell size was 3% bigger and cell walls were also a bit thicker. The results showed that the properties of foam based on biopolyol were similar to those of petrofoams. This result may open a possibility to replace petropolyol with renewable biopolyol in foam fabrication.

Modified rubber seed oil based polyurethane foams

2016 ◽  
Vol 23 (3) ◽  
Author(s):  
Nitinart Saetung ◽  
Suthira Somjit ◽  
Pradit Thongkapsri ◽  
Tulyapong Tulyapitak ◽  
Anuwat Saetung
Keyword(s):  
Seed Oil ◽  
Polyurethane Foams ◽  
Rubber Seed Oil ◽  
Rubber Seed

OPTIMISATION OF ENERGY AND MATERIALS IN ACID ESTERFICATION OF RUBBER SEED OIL THROUGH RSM AND ANN

2018 ◽  
Author(s):  
Jilse Sebastian ◽  
Vishnu Vardhan Reddy Mugi ◽  
C. Muraleedharan ◽  
Santhiagu A
Keyword(s):  
Seed Oil ◽  
Rubber Seed Oil ◽  
Rubber Seed

Experimental investigations to predict optimistic biodiesel(s) and its optimistic operating conditions by varying ignition delay period and fuel spray pressures for lower emissions and better performance

2020 ◽  
Vol 234 (19) ◽  
pp. 3890-3902
Author(s):  
Vishal V Patil ◽  
Ranjit S Patil
Keyword(s):  
Methyl Ester ◽  
Ignition Delay ◽  
Seed Oil ◽  
Delay Period ◽  
Operating Conditions ◽  
Experimental Investigations ◽  
Rubber Seed Oil ◽  
Rubber Seed ◽  
Neem Seed Oil ◽  
Ignition Delay Period

In this study, different characteristics of sustainable renewable biodiesels (those have a high potential of their production worldwide and in India) were compared with the characteristics of neat diesel to determine optimistic biodiesel for the diesel engine at 250 bar spray pressure. Optimistic fuel gives a comparatively lower level of emissions and better performance than other selected fuels in the study. Rubber seed oil methyl ester was investigated as an optimistic fuel among the other selected fuels such as sunflower oil methyl ester, neem seed oil methyl ester, and neat diesel. To enhance the performance characteristics and to further decrease the level of emission characteristics of fuel ROME, further experiments were conducted at higher spray (injection) pressures of 500 bar, 625 bar, and 750 bar with varying ignition delay period via varying its spray timings such as 8°, 13°, 18°, 23°, 28°, and 33° before top dead center. Spray pressure 250 bar at 23° before top dead center was investigated as an optimistic operating condition where fuel rubber seed oil methyl ester gives negligible hydrocarbon emissions (0.019 g/kW h) while its nitrogen oxide (NOX) emissions were about 70% lesser than those observed with neat diesel, respectively.

High value polyurethane resins from rubber seed oil

2016 ◽  
Vol 66 (1) ◽  
pp. 126-132 ◽  
Author(s):  
Jian Hong ◽  
Xiao-Qin Yang ◽  
Xianmei Wan ◽  
Zhifeng Zheng ◽  
Zoran S Petrović
Keyword(s):  
Seed Oil ◽  
Rubber Seed Oil ◽  
Rubber Seed

scholarly journals The study of interaction between rubber seed oil and epoxy resin

2021 ◽  
Vol 1030 ◽  
pp. 012011
Author(s):  
Elena Gotlib ◽  
Elena Cherezova ◽  
Anh Nguyen Thi Lan ◽  
Alla Sokolova
Keyword(s):  
Epoxy Resin ◽  
Seed Oil ◽  
Rubber Seed Oil ◽  
Rubber Seed

Development of Water Blown Bio-Based Thermoplastic Polyurethane Foams

2012 ◽  
Vol 584 ◽  
pp. 361-365 ◽  
Author(s):  
Baralu Jagannatha Rashmi ◽  
Daniela Rusu ◽  
Kalappa Prashantha ◽  
Marie France Lacrampe ◽  
Patricia Krawczak
Keyword(s):  
Compressive Strength ◽  
Cell Size ◽  
Surfactant Concentration ◽  
Thermoplastic Polyurethane ◽  
Polyurethane Foams ◽  
Chain Extender ◽  
Morphological Properties ◽  
Foam Sample ◽  
Glass Transition Temperatures ◽  
Blowing Agent

Water blown biobased thermoplastic polyurethane (TPU) foams were prepared using synthetic and biobased chain extender. The concentration of chain extender, blowing agent (BA) and surfactant were varied and their effects on physical, mechanical and morphological properties of foams were investigated. Density, compressive strength and modulus of foams decreases with an increase in BA content and increased with chain extender concentration, but do not change significantly with change in surfactant concentration. The glass-transition temperatures of the foam samples increases with an increase in BA and chain extender concentration. The cell size of the foam sample increases slightly with an increase in BA whereas chain extender concentration has no effect on cell size.

Sign in / Sign up

Export Citation Format

Share Document