[article]
| Titre : |
Role of imino functionality in melamine formaldehyde resin and designing its optimum proportion by multi-variate statistical analysis |
| Type de document : |
texte imprimé |
| Auteurs : |
Somnath Ray, Auteur ; Jayanta Pal, Auteur |
| Année de publication : |
2007 |
| Article en page(s) : |
p. 77-100 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
It is a very common practice that to get the desired property we often depend on huge number of trials at a time. But this will not only cost money/resources as well as time also. A better design strategy should be to minimise number of trials, efforts and randomise the trials. We can statistically extrapolate available data to the desired region and then go for a valid run. The work described in this paper has been done with this objective in mind . Three imino type melamine formaldehyde and one highly butylated melamine formaldehyde resin were synthesised under different processing condition, and using different levels of pH & melamine, formaldehyde & butanol ratios. Relative structural characteristics of these resins were determined using proton- Fourier Transfer Nuclear Magnetic Resonance Spectroscopy. Molecular weight and its distribution were studied using gel permeation chromatography. Polyester Melamine White Enamel Paints were prepared using these Melamine Resins and their rheological properties, short term, and long term properties were checked by non-destructive methods as well as conventional methods. Based on these experimental data, authors of this paper made efforts to correlate the attributes & variables statistically and determine the optimum proportion of imino functionality required to get desired property by simple and multi-variable regression analysis and other statistical tools. |
| Note de contenu : |
- Introduction
High imino melamine formaldehyde crosslinking agent
Preparation of imino resins
1) NMR analysis
2) Amine value calculation
Definition of amine value
Reagents
Standardization of (N/10) perchloric acid
Procedure
- Results
A) Rheological properties
1) Creep & recovery
2) Creep & recovery test
3) Flow behaviour of spray, coating after application
4) Thixotropic character measuremnet
B) Mechanical properties
C) Accelerated weathering resistance test
D) Water resistance
E) Solvent resistance
F) Solvent popping
Regression analysis
Linear or simple variable regression equation
Multivariate regression equation
Limitation of regression analysis method
- Conclusion |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11508 |
in PAINTINDIA > Vol. LVII, N° 10 (10/2007) . - p. 77-100
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Role of imino functionality in melamine formaldehyde resin and designing its optimum proportion by multi-variate statistical analysis in PAINTINDIA, Vol. LVII, N° 10 (10/2007)
