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

A technology of cement composite slats and plant fibers, applied in the field of building materials, can solve problems such as the decrease of bending tensile strength and elastic modulus, affecting the durability of composite slats, and the distortion and deformation of composite slats. The effect of improving corrosion resistance and strong compactness

Inactive Publication Date: 2015-09-16
HEFEI RUIHE DECORATION ENG
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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

Method used

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Embodiment Construction

[0013] The plant fiber cement composite strip with strong frost resistance is characterized in that it is made of the following raw materials in parts by weight: plant fiber 32, Portland cement 26, fly ash 43, peat soil 16, nano Silicon dioxide 8, carboxymethyl cellulose 0.4, nylon fiber 13, antimony trioxide 0.6, zinc sulfate 0.3, acrylate emulsion 15, lemon oil 3, ethylhexyl methoxycinnamate 8, appropriate amount of water.

[0014] The preparation method comprises the following steps:

[0015] (1) Put the plant fiber in an oven at 105°C for about 3-4 hours, dry it at room temperature, tap it with a leather hammer until the pectin is removed and crushed to a diameter of 3-6mm, and place it in a mass concentration Soak in 10% acrylic emulsion for 24 hours, press dry and then dry, blast to the state of tumbling, spray lemon oil in mist, and dry;

[0016] (2) Calcinate the peat soil at 640-710°C for 1-2 hours, add fly ash and nano silicon dioxide after cooling, stir and grind f...

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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...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B16/06C04B24/26C04B24/08C04B18/08
CPCY02W30/91
Inventor 黄二华
Owner HEFEI RUIHE DECORATION ENG
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