Strong frost resistance plant fiber cement composite slat and production method thereof

Abstract

The present invention discloses a strong frost resistance plant fiber cement composite slat, which is prepared from the following raw materials by weight: 25-35 parts of plant fibers, 20-27 parts of silicate cement, 40-45 parts of fly ash, 10-20 parts of peat soil, 8-10 parts of nanometer silica, 0.3-0.6 part of carboxymethyl cellulose, 11-14 parts of nylon fibers, 0.4-0.7 part of Diantimony trioxide, 0.2-0.4 part of zinc sulfate, 12-16 parts of an acrylic ester emulsion, 3-5 parts of lemon oil, 8-10 parts of 2-ethylhexyl 4-methoxycinnamate, and a proper amount of water. The prepared strong frost resistance plant fiber cement composite slat of the present invention has advantages of strong frost resistance, excellent thermal insulation, light self-weight, low shrinkage, strong compactness, and the like.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a plant fiber cement composite strip with strong frost resistance 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 plants i...

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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