Cement composite panel reinforced with organic short fibers coated with inorganic powder particles and its manufacturing method

摘要

The present invention relates to a fiber-reinforced cement composite panel, to manufacture organic short fibers coated with inorganic powder particles as an alternative to asbestos, which is a widely used reinforcing fiber, and to produce an organic fiber-reinforced cement composite panel using the same. Characterized in that the manufacturing method is dispersed in 10 parts by weight of cement powder and 20 parts by weight of organic fibers having a fiber length of about 6mm to 100 parts by weight of water, and mixed with 2 parts by weight of polyacrylamide, Step 1 of recovering the organic fiber coated with the inorganic powder particles by dehydration, 0.02 to 5 parts by weight of dispersant and 0.02 to 5 parts of the precipitation inhibitor is added to 100 parts by weight of water, mixed and the inorganic powder particles recovered in step 1 2 to 4 parts by weight of coated organic fibers, 100 parts by weight of cement, 45 parts by weight of filler, 0.01 to 5 parts by weight of binder and 3 to 5 parts by weight of wood pulp were added and mixed. The sum obtained, and then the slurry, characterized in that precipitation and the forming of water and isolated by compression of the panel shape of the precipitate consisting of a predetermined thickness in two steps for producing the organic fiber-reinforced cement composite panel. The cement panel manufactured according to the present invention has excellent binding strength between organic fibers and cement, so that bending strength, elastic modulus, fracture date, and toughness are greatly improved, and the fiber panel has a fractured cross section that greatly reduces fiber pullability when broken.