| abstract |
"FIBER-COMPOUND MATERIALS USING COLLED CELLULOSIC FIBERS". This invention describes a novel technology for fiber reinforced cement composite materials using fiber cement which is treated with inorganic and / or organic resins to make the fibers more hydrophobic as well as other chemical treatments. This invention describes four aspects of technology: fiber treatment, formulations, methods and the final product. This technology advantageously provides fiber cement building materials, with the desirable characteristics of reduced water absorption, reduced water absorption rate, lower water migration and lower water permeability. This invention also provides the end products with improved freeze - thaw resistance, reduced efflorescence, and improved rot and ultraviolet radiation resistance compared to conventional fiber cement products. These improved attributes are acquired without loss of dimensional stability, strength, deformation or toughness. In some cases the physical and mechanical properties are improved. This invention also describes the process of treating cellulosic fibers with various chemicals to impart fiber hydrophobicity for applications in fiber reinforced cement composite materials. |