Results 161 to 170 of about 306,995 (193)

On Mooney viscosity and Mooney stress relaxation. I

Journal of Applied Polymer Science, 1999
Mooney relaxation is highly nonlinear, strongly differs from stress relaxation at small strains, and can be described by Wagner's nonlinear rheological model for polymer melts. In the practical evaluation, the Mooney Stress Relaxation slope is more accurate than quantities such as t80. © 1999 John Wiley & Sons, Inc.
exaly   +2 more sources

Industrial Mooney viscosity prediction using fast semi-supervised empirical model

Chemometrics and Intelligent Laboratory Systems, 2017
Abstract In industrial rubber mixing processes, the quality index (i.e., Mooney viscosity) cannot be online measured directly. Traditional data-driven empirical models for online prediction of the Mooney viscosity have not utilized the information hidden in lots of unlabeled data (e.g., process input variables during each mixing batch). A simple semi-
Wenjian Zheng, Jianguo Yang, Yi Liu
exaly   +2 more sources

Relations between high-temperature mastication and Mooney viscosity relaxation in natural rubber

Journal of Applied Polymer Science, 2009
AbstractMastication of natural rubber (NR) is undertaken as a preliminary step towards the preparation of NR‐based vulcanizates, a process during which the elastomer is broken down to a homogeneous matrix of lower viscosity. Several tests and indicators are in use for characterizing the behavior of elastomers but these have mostly been adopted for the ...
Frederic Bonfils
exaly   +5 more sources

Influence of modulus of elasticity and Mooney viscosity on the homogeneity of rubber products

Progress in Rubber, Plastics and Recycling Technology
The uniformity of rubber products is one of the important indicators of the quality of rubber products. For some special rubber products, such as rubber bladders, uniformity becomes a decisive indicator of their quality. There are many factors affecting the uniformity of rubber products, but the effects of elastic modulus and Mooney viscosity of rubber
Dongmei Jiao
exaly   +2 more sources

Combining KPCA with LSSVM for the Mooney-Viscosity Forecasting

2008 Second International Conference on Genetic and Evolutionary Computing, 2008
Least squares support vector machine (LSSVM) has been used in soft sensor modeling in recent years. In developing a successful model based on LSSVM, the first important step is feature extraction. Principal components analysis (PCA) is a usual method for linear feature extraction and kernel PCA (KPCA) is a nonlinear PCA developed by using the kernel ...
Mei Liu, Daoping Huang, Zonghai Sun, Zhengshi Chen   +3 more
openaire   +1 more source

Method of Obtaining Viscosity Curves with Mooney Rheometer

Rubber Chemistry and Technology, 1979
Abstract A mathematical expression is derived for calculating shear stresses from torque values observed with the Mooney rheometer. Examination of this expression indicates that some improvement is possible in the rotor design. The numerical values of the conversion factor are given for both small and large rotors.
N. Nakajima, E. R. Harrell
openaire   +1 more source

Correlating mooney viscosity to average molecular weight

Journal of Applied Polymer Science, 1972
AbstractCopolymers of styrene and butadiene of the same chemical conposition, but widely different molecular weight distributions, were characterized by gel permeation chromatography. A very good correlation was obtained between the logarithm of the Mooney viscosity and the logarithm of the geometric mean of the number‐ and weight‐average molecular ...
O. Kramer, W. R. Good
openaire   +1 more source

Mooney Viscosity Stability and Polymer Filler Interactions in Silica Filled Rubbers

Rubber Chemistry and Technology, 2002
Abstract The change in Mooney viscosity (ML1+4) with aging was followed for silica filled compounds containing various silanes and polar additives. Several mechanisms for the aging stability are postulated and evaluated through experimentation.
Chenchy Lin, William L. Hergenrother, Ashley S. Hilton   +2 more
openaire   +1 more source

Mooney Viscosity Measurements in Determining Processibility of Technically Classified Rubbers

1953
Mooney viscosity measurements have been found helpful in estimating the processing characteristics of rubbers. They must be supplemented by other types of tests, however, before a comprehensive measure of processibility can be obtained.
Rolla H. Taylor, Alan G. Veith
openaire   +1 more source

Development of high Mooney viscosity, homogeneous long-chain branched EPDM

Rubber World, 2014
A study was conducted to demonstrate the development of high Mooney viscosity, homogeneous long-chain branched EPDM. It was demonstrated that the design of EPDM for sponge bulb profiles was the most demanding of all applications in automotive weatherstrip.
Li Pi Shan, C., Clayfield, T., Den Doelder, C.F.J.   +2 more
openaire   +1 more source