초록 ▼

A method and a composition are provided for molding low density desiccant syntactic foam articles. A low density molded desiccant article may be made as a syntactic foam by blending a thermosetting resin, microspheres and molecular sieve desiccant powder, molding and curing. Such articles have densi

A method and a composition are provided for molding low density desiccant syntactic foam articles. A low density molded desiccant article may be made as a syntactic foam by blending a thermosetting resin, microspheres and molecular sieve desiccant powder, molding and curing. Such articles have densities of 0.2-0.9 g/cc, moisture capacities of 1-12% by weight, and can serve as light weight structural supports.

대표청구항 ▼

A process for molding to size a desiccant syntactic foam article having a density of 0.2-0.9 g/cc and a moisture capacity of 1-12% by weight, comprising the steps of: (a) charging a mold with a powdery mixture of an activated molecular sieve desiccant, microspheres and a thermosetting resin, the amo

A process for molding to size a desiccant syntactic foam article having a density of 0.2-0.9 g/cc and a moisture capacity of 1-12% by weight, comprising the steps of: (a) charging a mold with a powdery mixture of an activated molecular sieve desiccant, microspheres and a thermosetting resin, the amount of the desiccant being sufficient to provide the required moisture capacity, and the amounts of the microspheres and resin being such that the microspheres/desiccant volume fraction exceeds the packing factor by an amount sufficient to substantially avoid shrinkage without causing excessively high molding pressures; (b) covering the mold and heating the covered mold to a temperature and for an amount of time sufficient to melt the resin; and (c) tightly closing the mold and heating the closed mold to a temperature and for an amount of time sufficient to cure the resin, and removing the resultant desiccant syntactic foam article from the mold.