Fiber cement composition materials using cellulose fibers loaded with inorganic and/or organic substances

A cellulose fiber and fiber cement technology, used in fiber raw material processing, building materials, plant fibers, etc., can solve problems such as reducing freeze-thaw cycle resistance, increasing the rate and amount of water absorption into products, and improving mechanical and physical properties. properties, improved mechanical properties and usability, effect of high water absorption
CN1473138AInactive Publication Date: 2004-02-04JAMES HARDIE INT FINANCE BV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JAMES HARDIE INT FINANCE BV
Publication Date
2004-02-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

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.
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Description

Technical field:

[0001] This invention relates to the chemical treatment of cellulose fibers to render the fibers more hydrophobic and / or durable. More specifically, the present invention relates to cellulose fiber reinforced cementitious composites using sized cellulose fibers, including fiber treatment methods, formulations, manufacturing methods and end products with improved relative material properties relative to the same product. Background technique:

[0002] In general, Portland cement is the basic raw material for many products such as buildings and structures, primary concrete and reinforced concrete. Compared to plaster, wood, particle board, fiberboard and other common materials used in building products, cement has a number of advantages such as being a hydraulically settable binder and being less affected by water after setting. That's not to say water won't affect cement. Some of the chemical components do dissolve when the cement is saturated with fresh wa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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