Performance of Local Clay-Titanium Dioxide Core-Shell Extender Pigments in Alkyd Paints

Ewulonu, Chinomso M.; Igwe, Isaac O.; Onyeagoro, G. N.

doi:10.4236/anp.2016.51011

Cited by 8 publications

(3 citation statements)

References 23 publications

(25 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They suggested kaolin can act as a reinforcing agent in polymer compositing. Ewulonu [9] synthesized and characterized local clay-titanium dioxide core-shell extender pigment employing simple chemical technique and determined their combined properties of both the local clays and titanium dioxide. Improvement of the thermal degrading property of polyacrylonitrile/nano composite filaments by using montmorillonite clay was investigated and reported that fibers with higher montmorillonite clay concentrations showed more crystallinity Rahim M. et al [10].…”

Section: Introductionmentioning

confidence: 99%

AkwaIbom (Iba Oku) Clay as Extender Pigment in Formulation of Anti-Corrosive Alkyd Paints for Saline Medium

Oguzie,

Nwanonenyi,

Ichetaonye

et al. 2023

IJASE

View full text Add to dashboard Cite

Akwaibom (Iba Oku clay) was employed as a pigment extender to produce alkyd paints with mild steel-friendly anti-corrosive properties. 0.075 mm of this clay particles were employed as extender contents ranging from 0 to 80.0 weight percent. Reference alkyd paint was produced with titanium dioxide, and xylene. Main ingredients found in this clay in wt.%, where silica (58.19), alumina (35.35), titanium dioxide (2.60), and traces of other metallic oxides. From the study this clay was stable to heat and chemical medium. Products painted with the sample paint had satisfactory surface and complete drying times with best complete drying time gotten at 220 minutes for 80 wt.% clay. The paint film thickness was between 0.10 and 0.15 mm, showing abilities to give weather-resistant barriers and good impact resistance. The quantity of clay in the dry paint film increased the hardness of the paint film giving a maximum pencil hardness of 5H for 60 and 80 wt.% clay. General adhesion of the paint dry coatings on mild steel surface was in the range of 3.0 to 25.0%. Neither blistering, nor serious paint defects were seen on immersion into 2.5% NaCl, except minor color changes due to anticorrosive properties inherent in it. This is in contrast to the performance at 2.5% for H2SO4, where some notable paint flaws occurred while 2.5% Na2CO3 was generally satisfactory. This study gives value to this clay as an extender pigment suitable in the formulation of paints for the protection of mild steel in saline conditions.

show abstract

Section: Introductionmentioning

confidence: 99%

AkwaIbom (Iba Oku) Clay as Extender Pigment in Formulation of Anti-Corrosive Alkyd Paints for Saline Medium

Oguzie,

Nwanonenyi,

Ichetaonye

et al. 2023

IJASE

View full text Add to dashboard Cite

show abstract

“…The performance of Obowo, and Ihitte-Uboma clays-TiO 2 core-shell extender pigments in alkyd paint formulations was investigated by Ewulonu et al [10].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Utilization of Eziulo Clay as an Extender in Emulsion Paint Formulations

Igwe¹,

Osuoha²,

Nwapa³

2017

JMMCE

View full text Add to dashboard Cite

A series of emulsion paint samples were prepared using Eziulo clay as an extender, commercial whiting, and titanium dioxide (TiO 2). The clay that was calcined at 850˚C and sieved to three particle sizes (0.075, 0.100 and 0.150 mm) was incorporated into emulsion paints at varying amounts ranging from 5%-32% of the total extender and pigment in the paints. Poly (vinyl acetate) was used as the binder while distilled water served as the solvent. The Eziulo clay which consisted mostly of silica (63.30%), alumina (19.40%), and iron (III) oxide (2.10%) had the following properties: pH (6.67), specific gravity (2.47) and oil absorption (34.30 g/100 g clay). The colour and solubility of the clay in dilute hydrochloric acid, acetic acid, sodium chloride solution, methanol and distilled water were generally unaffected either in the cold or when heated expect for the slight solubility observed in methanol. The clay formulated paint samples exhibited higher viscosity (7.0-7.80 poise) than the paint sample without Eziulo clay (6.60 poise). Conversely, the pH and specific gravity of the paint sample without Eziulo clay were higher than those of paint sample containing the clay. The surface and hard dry times of the formulated paint samples were greater than that of the paint sample without Eziulo clay. The determined surface dry times were within the range, 16-18 min, irrespective of clay content and particle size. The hard dry times of the formulated paint samples were found to reverse with increases in clay content. The paint dry film flexibility was unaffected by the incorporation of clay, irrespective of the amount and clay particle size. The emulsion paint dry films exhibited decreases in film adhesion to substrates with increases in clay content, and increases in film adhesion with increases in clay particle size. The paint dry films did not exhibit any chalking tendency, were resistant to fungal attack, and passed the water drop test. The present study has demonstrated the utility of Eziulo clay in emulsion paint formulations which should justify its use in the surface coatings industry. How to cite this paper: Igwe, I.O., Osuoha, G. and Nwapa, C. (2017) Characterization and Utilization of Eziulo Clay as an Extender in Emulsion Paint Formulations.

show abstract

“…Kaolin and metakaolin coated with layer of metal oxides have been studied [13] and the new composite materials were found to have interesting properties for use as pigment. The study on performance of local clay-titanium dioxide core-shell extender pigments in alkyd paints have shown that the new pigment combine the properties of both the clays and titanium dioxide, and have the potential to overcome their disadvantages [14]. Kaolin has also been used to prepare core-shell pigments containing ferrites and was found to be efficient as coating for protecting metal substrates [15].…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Aro-Ndizuogu Local Clay in Alkyd Paint Production

Igwe

Ewulonu

Chikei

et al. 2016

IJET

View full text Add to dashboard Cite

Abstract. The potentials of Aro-Ndizuogu clay as an extender in gloss paint have been investigated. The physical properties of the local clay investigated: refractive index (1.54), pH (7.10), oil absorption (32g/100g clay), and specific gravity (2.13) compared favourably with that of conventional extenders. Gloss paints were prepared using the local clay (as an extender), xylene as solvent, and alkyd resin as binder. Paint samples prepared using TiO 2 pigment was used for comparison. Results obtained from the analysis of the paint samples showed that TiO 2 formulated alkyd paint samples exhibited the highest specific gravity (1.42) while the alkyd paint containing 50 % local clay, the least (1.30). While TiO 2 formulated paint samples did not show any settling tendency, paint samples containing 50 and 60 % local clay had poor settling tendencies. The resistance of dry paint films was generally good in 2 % Na 2 CO 3 , distilled water, and 2 % NaCl. However, all the prepared paint samples failed NH 3 , and H 2 SO 4 resistance tests. The present study has shown that Aro-Ndizuogu clay exhibited similar performance properties in the prepared alkyd paint samples like TiO 2 prepared paint, and should find utilization in the surface coatings industry.

show abstract

Performance of Local Clay-Titanium Dioxide Core-Shell Extender Pigments in Alkyd Paints

Cited by 8 publications

References 23 publications

AkwaIbom (Iba Oku) Clay as Extender Pigment in Formulation of Anti-Corrosive Alkyd Paints for Saline Medium

AkwaIbom (Iba Oku) Clay as Extender Pigment in Formulation of Anti-Corrosive Alkyd Paints for Saline Medium

Characterization and Utilization of Eziulo Clay as an Extender in Emulsion Paint Formulations

Performance Evaluation of Aro-Ndizuogu Local Clay in Alkyd Paint Production

Contact Info

Product

Resources

About