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US 6,610,228 B2Granted
Dry process for bonding silica-rich plant materials
AssigneeSantee, Inc.
InventorCharles L. Capps
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Abstract
Particles of silica-rich plant material are bonded into a rigid unitary body. The silica content of such materials is believed to enter into bonding reactions when the materials are combined with a polymeric resin base material such as PAPI that has been previously converted by reaction with a colloidal gel formed from silica and a basic solution. The resulting product exhibits characteristics superior to most engineered wood products. A theoretical analysis of the bonding chemistry is proposed.
Claims13
A method forming a rigid structural body comprising the steps of:
- providing a polymeric resin base material comprising 4,4′ or 2,4′ methylene diisocyanate;
- forming a colloidal gel formed from silica and a basic solution;
- forming a binder material by incorporating the colloidal gel into said polymeric base material;
- forming a composition from a substantially dry mixture of silica-rich plant material and said binder material;
- heating said composition;
- and
- compressing said composition.
4 more elements
Dependencies are inferred from the claim text.