Modeling and simulation of urethane acrylates synthesis. II. Kinetics of uncatalyzed reaction of toluene diisocyanate with a polyether diol

2001 ◽  
Vol 81 (13) ◽  
pp. 3149-3160 ◽  
Author(s):  
B. Grepinet ◽  
F. Pla ◽  
Ph. Hobbes ◽  
Th. Monge ◽  
Ph. Swaels
Keyword(s):  
Modeling And Simulation ◽  
Toluene Diisocyanate ◽  
Uncatalyzed Reaction ◽  
Kinetics Of

Effect of Soy Protein on Kinetics of Polyurethane Formation

2010 ◽  
Vol 160-162 ◽  
pp. 1712-1715
Author(s):  
Guang Heng Wang
Keyword(s):  
Soy Protein ◽  
Soy Protein Isolate ◽  
Kissinger Method ◽  
Toluene Diisocyanate ◽  
Polymerization Reaction ◽  
Dibutyltin Dilaurate ◽  
Ozawa Method ◽  
Scanning Calorimetry ◽  
Model Free ◽  
Kinetics Of

The polymerization reaction kinetics of biodegradable polyurethane extended with soy protein isolate (SPI) with dibutyltin dilaurate (DBTDL) as the curing catalyst was studied by means of non-isothermal differential scanning calorimetry (DSC). Model-free methods, Kissinger method and Ozawa method, were applied for analyzing the DSC data. The Ea and lnA obtained from Kissinger method for catalyzed reaction between toluene diisocyanate (TDI) and Polyoxypropyleneglycol (PPG) are 60.80 kJ•mol-1 and 12.09, and for catalyzed reaction among TDI, PPG, and SPI they were 65.91 kJ•mol-1and 14.04. Similarly the Ea obtained from Ozawa method for catalyzed reaction between TDI and PPG and catalyzed reaction among TDI, PPG, and SPI were 63.49 kJ•mol-1 and 64.78 kJ•mol-1, respectively. The results showed that, the incorporation of a small amount of SPI into polyurethane did not affect the reaction kinetic strongly, but increases the reaction activation energy Ea and lnA.

Kinetics of castor oil based polyol–toluene diisocyanate reactions

1998 ◽  
Vol 34 (9) ◽  
pp. 1273-1276 ◽  
Author(s):  
S. Ajithkumar ◽  
S.S. Kansara ◽  
N.K. Patel
Keyword(s):  
Castor Oil ◽  
Toluene Diisocyanate ◽  
Kinetics Of

Modeling and Simulation of a Wind Turbine Gear Set With Hydrodynamic Bearings Attached to an Induction Generator

2016 ◽  
Author(s):  
Eduardo Paiva Okabe ◽  
Jaime Izuka ◽  
Pierangelo Masarati
Keyword(s):  
Modeling And Simulation ◽  
Wind Turbine ◽  
Hydrodynamic Lubrication ◽  
Induction Generator ◽  
Hydrodynamic Bearings ◽  
Hydrodynamic Bearing ◽  
Epicyclic Gear ◽  
Gear Trains ◽  
Electrical Components ◽  
Kinetics Of

This work presents the numerical modeling and simulation of a wind turbine gearset with hydrodynamic bearings and an induction generator. Transmissions based on epicyclic gear trains applied to wind turbines have some advantages, i.e., compactness, robustness and low maintenance requirement. The early stages of the development of such mechanism need numerical results in order to design it properly. The complexity of this machine requires a multidisciplinary approach to model and simulate a system comprising of mechanical, fluid and electrical components. The bearing model is integrated to the kinetics of the gearbox, allowing a precise evaluation of the journal bearing’s movements. Through a multidisciplinary multibody dynamics software, the gearbox dynamics, the bearing behavior and the induction generator are calculated in a single system. The numerical solution of the hydrodynamic lubrication problem of a finite bearing is achieved using the finite element method. The hydrodynamic bearing and the induction generator are implemented as a user module in MBDyn software, which makes them available to model and simulate other types of rotating machinery. Simulations of two different conditions showed a better damping property when compared to rolling bearings, in this gearset.

Real-Time Monitoring on the Kinetics of the Toluene Diisocyanate–Polyol Reaction

2008 ◽  
Vol 33 (3) ◽  
pp. 283-292 ◽  
Author(s):  
Dawei Qin ◽  
Xia Meng ◽  
Hongdong Duan ◽  
Xiaomeng Li ◽  
Dengxue Du ◽  
...  
Keyword(s):  
Real Time ◽  
Toluene Diisocyanate ◽  
Real Time Monitoring ◽  
Kinetics Of
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