초록 ▼

This invention discloses a new technology related to cellulose fiber reinforced cement composite materials using cellulose fibers that are treated with inorganic and/or organic resins to make the fibers more hydrophobic, as well as other chemical treatments. This invention discloses four aspects of

This invention discloses a new technology related to cellulose fiber reinforced cement composite materials using cellulose fibers that are treated with inorganic and/or organic resins to make the fibers more hydrophobic, as well as other chemical treatments. This invention discloses four aspects of the 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 rate of water absorption, lower water migration, and lower water permeability. This invention also impart the final products improved freeze-thaw resistance, reduced efflorescence, and improved rot and UV resistances, compared to conventional fiber cement products. These improved attributes are gained without loss in dimensional stability, strength, strain or toughness. In some cases the physical and mechanical properties are improved. This invention also discloses the method of treating cellulose fibers with various chemicals to impart the fiber hydrophobicity for applications in the fiber reinforced cement composite materials.

대표청구항 ▼

This invention discloses a new technology related to cellulose fiber reinforced cement composite materials using cellulose fibers that are treated with inorganic and/or organic resins to make the fibers more hydrophobic, as well as other chemical treatments. This invention discloses four aspects of

This invention discloses a new technology related to cellulose fiber reinforced cement composite materials using cellulose fibers that are treated with inorganic and/or organic resins to make the fibers more hydrophobic, as well as other chemical treatments. This invention discloses four aspects of the 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 rate of water absorption, lower water migration, and lower water permeability. This invention also impart the final products improved freeze-thaw resistance, reduced efflorescence, and improved rot and UV resistances, compared to conventional fiber cement products. These improved attributes are gained without loss in dimensional stability, strength, strain or toughness. In some cases the physical and mechanical properties are improved. This invention also discloses the method of treating cellulose fibers with various chemicals to impart the fiber hydrophobicity for applications in the fiber reinforced cement composite materials. dia," Southcon/96, Conference Record, pp. 192-197, 1996. Digimarc presentation at RSA Conference, approximately Jan. 17, 1996, 4 pages. Frequently Asked Questions About Digimarc Signature Technology, Aug. 1, 1995, HTTP://WWW.DIGIMARC.COM, 9 pages. Hartung et al., Digital Watermarking of Raw and Compressed Video, Proc. SPIE 2952, Digital Compression Technologies and Systems for Video Communications, Oct., 1996, pp. 205-213. "Holographic signatures for digital images," The Sebold Report on Desktop Publishing, Aug. 1995, one page. Johhnson, "Steganography," Dec. 10, 1995, 32 pages. Kassan, "Elements of Statistical Hypothesis Testing/Signal Detection in NOn-Gaussian Noise," Dowden & Culver, pp. 1-96, 1988. Koch et al., "Towards Robust and Hidden Image Copyright Labeling," of 1995 Proc. IEEE Workshop on Nonlinear Signal and Image Processing, Jun. 20-22, 1995, 4 pages. Koch et al., "Digital Copyright Labeling: Providing Evidence of Misuse and Tracking Unauthorized Distribution of Copyrighted Materials," Oasis Magazine, Dec. 1995, 3 pages. Luc, "Analysis of Spread Spectrum System Parameters for Design of Hidden Transmission," Radioengineering, vol. 4, No. 2, Jun. 1995, pp. 26-29. Maco, "Cryptology for Digital TV Broadcasting,"Proceedings of the IEEE, vol. 83, No. 6, Jun. 1995, pp. 944-957. New Product Information, "FBI at AppleExpo"(Olympia, London), Nov., 1995, 2, pages. Oruanaidh et al., "Watermarking Digital Images for Copyright Protection," http://www/kalman,mee.td.ie/people/jjr/eva--pap.html, Feb. 2, 1996, 8 pages. (Also published Aug., 1996, IEE Proceddings-Vision, Image and Signal Processing, vol. 143. No. 4, pp. 250-256.). Pitas et al., "Applying Signatures on Digital Images," IEEE Workshop on Nonlinear Image and Signal Processing, Neos Marmaras, Greece, pp. 460-463, Jun., 1995. Quisquater, J., et al, "Access Control and Copyright Protection for Images, WorkPackage 1: Access Control and Copyright Protection for Images Need Evaluation," Jun., 1995, 21 pages. "Steganography,"Intellectual Property and the National Information Infrastructure The Report of the Working Group on Intellectual Property Rights, Sep. 1995, pp. 212-213. Ten Kate, W.R., et al., "A New Surround-Stereo-Surround Coding Technique", Philips Research Laboratories, The Netherland, May, 1992.