Lightweight fire-refractory high strength plant fiber cement composite strip plate and producing method thereof

Abstract

The present invention discloses a lightweight fire-refractory high strength plant fiber cement composite strip plate comprising the following raw materials by weight: 31-36 parts of plant fiber, 23-27 parts of Portland cement, 45-50 parts of fly ash, 8-10 parts of Dead Sea black mud, 15-20 parts of blast furnace slag, 0.2-0.4 part of sodium phosphate, 0.4-0.7 parts of silicon nitride, 0.02-0.05 part of deacetylated chitin, 9-12 parts of methyl methacrylate, 3-6 parts of hexyldecanol, 13-16 parts of silicone-modified acrylate emulsion, 5-8 parts of liquid paraffin, and proper amount of water; the lightweight fire-refractory high strength plant fiber cement composite strip plate is light in weight, high in strength, fire retardant, sound-absorption, sound-insulation, simple and quick in installation and construction, and widely suitable for demand for new structural systems, and is an energy saving green environmentally friendly building material.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a light-weight refractory high-strength plant fiber cement composite strip and a manufacturing method thereof. Background technique [0002] Since the 1990s, in terms of the choice of living environment, people are no longer satisfied with ordinary housing, but are pursuing building materials with natural characteristics, that is, environment-friendly new materials. Environmentally harmonious building materials must meet the characteristics of heat preservation and energy saving, sound absorption and sound insulation, water resistance and fire prevention, non-toxic and tasteless, light weight, high strength, and safety. Plant fiber cement composite slats are a new type of environmentally harmonious building materials. Fiber refers to annual plant fibers, mainly crop straws such as corn stalks, wheat stalks, cotton stalks, hemp stalks, etc. [0003] The yield of annual...

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Problems solved by technology

[0004] However, the anti-coagulation effect of plant fiber extracts on cement and the alkaline erosion of cement hydrates limit the application of plant fiber cement composite strips. The performance is: the highly alkaline liquid in the pores of the cement substrate has an erosion effect on the plant fibers. effect, thus affecting the durability of the composite slats; plant fibers have a high water absorption rate, which will cause volume changes, resulting in a significant decrease in the bending and tensile strength and elastic modulus of the plant fiber cement composite slats after being damp, causing the composite slats to be twisted Deformation, even cracking; plant fibers depolymerize under the action of microorganisms, resulting in a decrease in the degree of polymerization and a corresponding decrease in their tensile strength