Influence of pigment and binder composition on the dynamic water penetration and dried structure of precoating layers for double-coated paper / Hye Jung Youn in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 3 (05/2022) . - p. 931-938 Titre : Influence of pigment and binder composition on the dynamic water penetration and dried structure of precoating layers for double-coated paper Type de document : texte imprimé Auteurs : Hye Jung Youn, Auteur ; Hak Lae Lee, Auteur Année de publication : 2022 Article en page(s) : p. 931-938 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Couleur Enrobage (technologie) Formulation (Génie chimique) Humidité -- Absorption:Eau -- Absorption Liants Papier -- Revêtements Papier et carton couché Pigments Rayonnement ultraviolet -- Absorption Revêtements -- Analyse Séchage Index. décimale : 667.9 Revêtements et enduits Résumé : The influence of precoating colors on the dynamic water penetration behavior of double-coated paper was investigated using a laboratory coater equipped with two coating heads. Emphasis was placed on the effects of the pigment combination and binder type on dynamic water penetration. In addition, the latex content on the surface of the coating layer was examined by UV absorbance analysis. The amount of water that penetrated the base paper was found to be proportional to the square root of the contact time between the coating color and the base paper, regardless of the pigments and binders used. When a large amount of pigment with a fine particle size was used, or the starch binder content was increased, the low shear viscosity of the coating color increased, and the amount of water penetration into the base paper decreased. The UV absorbance analysis showed that higher water holding in the coating color increased the latex content on the surface of the coating layer. Increasing the viscosity or water retention of the coating color was found to reduce the amount of binder migration into the base paper. Note de contenu : - EXPERIMENTAL SECTION : Materials - Coating formulation - Coating and drying - Coating analysis - RESULTS AND DISCUSSION : Dynamic absorption of coating color - Pore structure of the precoating layer - Surface properties of precoating layer - Table 1 : Precoating color formulations in parts per hundred - Table 2 : Properties of precoating color as a function of pigment mixing ratio - Table 3 : Properties of precoating color as a function of the binder mixing ratio - Table 4 : Structural parameters of precoated layers as a function of pigment composition - Table 5 : Structural parameters of precoated layers as a function of pigment mixing ratio - Table 6 : Surface properties of precoated layers as a function of pigment composition and pigment mixing ratio - Table 7 : Precoated layer UV absorbance and water absorption into the base paper DOI : https://doi.org/10.1007/s11998-021-00569-8 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00569-8.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38087 [article]

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