B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 13/02 (2006.01) B01J 13/18 (2006.01)
Patent
CA 2511177
A process for the microencapsulation of phase transitional paraffin compounds is described. Polypropylene glycols with the average molecule weight over 400 were used as the surface tension modifiers for emulsifying the paraffin compounds. Polyisocyanates capable of being dissolved in the phase change materials were employed to promote the deposition of melamine, partially methylolated melamine and the precondensate of melamine-formaldehyde onto the hydrophobic droplets for the microencapsulation. The prepared emulsion of microencapsulated phase change materials was successfully coated on textile fabrics and the coated products showed improved thermal regulation function.
L'invention concerne un processus de micro-encapsulation de composés de paraffine à transition de phase. On a utilisé en tant que modificateur de tension de surface des polypropylèneglycols à masse moléculaire moyenne supérieure à 400 pour émulsifier les composés de paraffine. On a utilisés des polyisocyanates pouvant être dissous dans des matériaux à changement de phase pour favoriser le dépôt de mélamine, de mélamine partiellement méthylolée et de précondensat de mélamine-formaldéhyde en gouttelettes hydrophobes destinées à la micro-encapsulation. On a réussi ainsi à enrober des tissus textiles avec une émulsion ainsi formée à base de matériaux à changement de phase micro-encapsulés, et les produits ainsi enrobés ont manifesté une fonction de régulation thermique importante à un degré élevé.
Li Yi
Newton Edward
Xing Jianwei
Nano-Sports Technologies Ltd.
Smart & Biggar
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