Effects of nanoclay contents on the properties of water-based coating

Tumirah K., . and Alia Syahirah Y., . and Hamdan H., . and Lee S. H., . and Anwar U. M. K., . Effects of nanoclay contents on the properties of water-based coating. pp. 353-361. ISSN 0128-1283

Different loadings of nanoclay namely 2 4 6 8 and 10 were mixed into water based polyurethane by homogenisation process and were coated on rubberwood panels. Effects of the incorporation of nanoclay on the chemical thermal properties adhesion and mechanical properties of the wood coatings were investigated. Fourier transforms infrared analysis revealed that the polyurethane structure did not change by the addition of nanoclay. Thermogravimetric analysis showed that the coatings added with nanoclay possessed higher residual masses. Decomposition temperature of the coatings added with 2 4 and 6 nanoclay increased but decreased when higher loadings were used probably attributed to the nanoclay agglomeration effect. Impact and scratch resistance of the coatings were improved by the addition of up to 6 nanoclay. On the other hand abrasion resistance of the coatings was improved when 2 nanoclay was added but started to decrease when 4 nanoclay were used. Moreover the addition of nanoclay slightly reduced the transparency of the water based coating. Therefore addition of 2 nanoclay would be sufficient to obtain satisfying results as higher nanoclay content did not result in further improvement of the properties.

Full text available from: Official URL: https://info.frim.gov.my/infocenter_applications/j...

Abstract

Different loadings of nanoclay namely 2 4 6 8 and 10 were mixed into water based polyurethane by homogenisation process and were coated on rubberwood panels. Effects of the incorporation of nanoclay on the chemical thermal properties adhesion and mechanical properties of the wood coatings were investigated. Fourier transforms infrared analysis revealed that the polyurethane structure did not change by the addition of nanoclay. Thermogravimetric analysis showed that the coatings added with nanoclay possessed higher residual masses. Decomposition temperature of the coatings added with 2 4 and 6 nanoclay increased but decreased when higher loadings were used probably attributed to the nanoclay agglomeration effect. Impact and scratch resistance of the coatings were improved by the addition of up to 6 nanoclay. On the other hand abrasion resistance of the coatings was improved when 2 nanoclay was added but started to decrease when 4 nanoclay were used. Moreover the addition of nanoclay slightly reduced the transparency of the water based coating. Therefore addition of 2 nanoclay would be sufficient to obtain satisfying results as higher nanoclay content did not result in further improvement of the properties.

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Item Type:	Article
AGROVOC Term:	Clay
AGROVOC Term:	Polyurethane
AGROVOC Term:	Coating
AGROVOC Term:	Chemical properties
AGROVOC Term:	Thermogravimetric analysis
AGROVOC Term:	Decomposition
AGROVOC Term:	Heat stability
AGROVOC Term:	Mechanical properties
AGROVOC Term:	Temperature
AGROVOC Term:	Wood panels
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8208

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