CN104909655A - Anti-seismic vegetable fiber cement composite strip plate and producing method thereof - Google Patents

Abstract

The present invention discloses an anti-seismic vegetable fiber cement composite strip plate which is prepared from the following raw materials by weight: 30-35 parts of vegetable fiber, 20-25 parts of Portland cement, 40-46 parts of fly ash, 10-20 parts of silica fume, 10-13 parts of diatomite, 7-9 parts of nano calcium carbonate, 3-5 parts of algae carbon fiber, 0.2-0.4 part of potassium bisulfate, 0.3-0.5 part of aluminum nitride, 14-18 parts of water-soluble phenolic resin, 6-10 parts of glycol dimethacrylate, 4-6 parts of methylsilicone oil, 0.1-0.2 part of polyvinylpyrrolidone, and proper amount of water; the obtained anti-seismic vegetable fiber cement composite strip plate has the advantages of anti-seismic, acoustic absorption thermal insulation, compressive strength, fracture resistance, strong density, good permeability and the like, and is suitable for large-scale construction of the anti-seismic energy-saving houses.

Description

A kind of anti-vibration plant fibrocement composite strip plate and preparation method thereof

Technical field

The present invention relates to material of construction material technical field, be specifically related to a kind of anti-vibration plant fibrocement composite strip plate and preparation method thereof.

Background technology

Since entering the nineties, in the selection of living environment, people have been not content with general has it to occupy, but is pursuing material of construction and the new building materials of environmental harmony type with natural characteristic.Environmental harmony type building materials must meet heat preservation energy-saving, sound absorption sound insulation, water-proof fire-retardant, nonpoisonous and tasteless, lightweight, the characteristic such as high-strength, safe, plant fiber-cement composite strip plate is exactly a kind of novel environmental harmony type material of construction, selected vegetable fibre refers to annual fiber, mainly refers to that crop stalk is as corn stalk, straw, cotton stem, waste of flax etc.

At China's yearly plant abundance, be inexhaustible, nexhaustible raw material, their lifetime is shorter, does not have too large purposes after withered.These crop stalks through cut off hammer broken after obtained vegetable fibre feature be that length-to-diameter ratio is large, specific tenacity is high, specific surface area is large, density is low and biodegradable, have that cost is low, tensile strength advantages of higher in addition, replace timber to make cementitious composite batten strongthener, in use unharmful substance and obnoxious flavour generate.

But the alkaline attack effect of vegetable fibre extract to the anticoagulation of cement and cement-hydrate all limits the application of plant fiber-cement composite strip plate, show: the high alkalinity liquid phase in cement matrix hole has erosion action to vegetable fibre, thus affects the weather resistance of composite strip plate; Vegetable fibre has very high water-intake rate, the declining to a great extent of flexural tensile strength and Young's modulus after volume change can be caused to cause plant fiber-cement composite strip plate to make moist, and composite strip plate is distorted distortion, even ftractures; Vegetable fibre because there is depolymerization, making its polymerization degree decline and causing the corresponding reduction of its tensile strength under microbial process.For solving the problems of the prior art, need to carry out modification to existing plant fibre surface and reduce the alkalescence of gelling material.

Summary of the invention

Object of the present invention is just to provide a kind of anti-vibration plant fibrocement composite strip plate and preparation method thereof, to overcome the deficiencies in the prior art.

The object of the present invention is achieved like this:

A kind of anti-vibration plant fibrocement composite strip plate, it is characterized in that, be made up of the raw material of following weight part: vegetable fibre 30-35, silicate cement 20-25, flyash 40-46, silicon ash 10-20, diatomite 10-13, nano-calcium carbonate 7-9, aethiops vegetabilis fiber 3-5, sal enixum 0.2-0.4, aluminium nitride 0.3-0.5, water soluble phenol resin 14-18, ethyleneglycol dimethyacrylate 6-10, methyl-silicone oil 4-6, polyvinylpyrrolidone 0.1-0.2, water are appropriate.

The preparation method of described a kind of anti-vibration plant fibrocement composite strip plate, is characterized in that comprising the following steps:

(1) within baking oven about 3-4 hour that vegetable fibre is put into 105 DEG C, dry, room temperature is dried, rap that to remove to pectin and be crushed to diameter be 3-6mm again with skin hammer, being placed on mass concentration is soak 24 hours in the water soluble phenol resin of 10%, press dry post-drying, air blast to the state of seething sprays into vaporific methyl-silicone oil, dries;

(2) diatomite is calcined 1-2 hour at 615-685 DEG C, cooling adds flyash, silicon ash, nano-calcium carbonate agitation grinding 30-40 minute, add aluminium nitride and be warming up to 225-255 DEG C of stirring 5-10 minute, be cooled to 50-80 DEG C, add ethyleneglycol dimethyacrylate to continue to stir 13-15 minute, be cooled to room temperature, dry porphyrize;

(3) sal enixum be dissolved in water and stir 10-15 minute, add step (1), (2) reaction mass stirring and evenly mixing, add silicate cement and other remaining components stirring 20-30 minute again, add forming machine shaping, after 20-30h, obtain finished product through cutting, the demoulding, natural curing successively.

The present invention has following beneficial effect: it is easy that the present invention prepares simple operations, first water soluble phenol resin dip treating technique is taked to make the surfaces externally and internally of vegetable fibre be enclosed with one layer of polymeric film to plant fibre surface pre-treatment, spray vaporific methyl-silicone oil again, make whole fibre dense and obtain certain rigidity, and water tolerance improves; Secondly flyash is added and in addition modification replaces part of cement, the growing amount of calcium hydroxide after minimizing aquation, improve the corrosion resistance of vegetable fibre, choose the water cement ratio of 0.42 simultaneously, obtained plant fiber-cement composite strip plate has the advantages such as antidetonation, sound-absorption and heat-insulation, resistance to compression, anti-folding, density are strong, good penetrability, is applicable to build earthquake-proof energy-saving room on a large scale.

Embodiment

Described a kind of anti-vibration plant fibrocement composite strip plate, it is characterized in that, be made up of the raw material of following weight part: vegetable fibre 31, silicate cement 22, flyash 43, silicon ash 15, diatomite 12, nano-calcium carbonate 7, aethiops vegetabilis fiber 3, sal enixum 0.3, aluminium nitride 0.4, water soluble phenol resin 16, ethyleneglycol dimethyacrylate 6, methyl-silicone oil 5, polyvinylpyrrolidone 0.1, water are appropriate.

Making method comprises the following steps:

(1) within baking oven about 3-4 hour that vegetable fibre is put into 105 DEG C, dry, room temperature is dried, rap that to remove to pectin and be crushed to diameter be 3-6mm again with skin hammer, being placed on mass concentration is soak 24 hours in the water soluble phenol resin of 10%, press dry post-drying, air blast to the state of seething sprays into vaporific methyl-silicone oil, dries;

(2) diatomite is calcined 1-2 hour at 615-685 DEG C, cooling adds flyash, silicon ash, nano-calcium carbonate agitation grinding 30-40 minute, add aluminium nitride and be warming up to 225-255 DEG C of stirring 5-10 minute, be cooled to 50-80 DEG C, add ethyleneglycol dimethyacrylate to continue to stir 13-15 minute, be cooled to room temperature, dry porphyrize;

(3) sal enixum be dissolved in water and stir 10-15 minute, add step (1), (2) reaction mass stirring and evenly mixing, add silicate cement and other remaining components stirring 20-30 minute again, add forming machine shaping, after 20-30h, obtain finished product through cutting, the demoulding, natural curing successively.

The technical parameter index of the plant fiber-cement composite strip plate using the present invention to produce is as follows:

(1) tensile splitting strength of maintenance 28d improves 23.45%;

(2) bending strength of maintenance 28d improves 16.58%;

(3) thermal conductivity (medial temperature 25 ± 2 DEG C): 0.071W/ (mk);

(4) sound absorption coefficient maximum is 0.528, and sound-damping qualities is 31dB.

Claims (2)

1. an anti-vibration plant fibrocement composite strip plate, it is characterized in that, be made up of the raw material of following weight part: vegetable fibre 30-35, silicate cement 20-25, flyash 40-46, silicon ash 10-20, diatomite 10-13, nano-calcium carbonate 7-9, aethiops vegetabilis fiber 3-5, sal enixum 0.2-0.4, aluminium nitride 0.3-0.5, water soluble phenol resin 14-18, ethyleneglycol dimethyacrylate 6-10, methyl-silicone oil 4-6, polyvinylpyrrolidone 0.1-0.2, water are appropriate.

2. the making method of a kind of anti-vibration plant fibrocement composite strip plate according to claim 1, is characterized in that comprising the following steps:

(1) within baking oven about 3-4 hour that vegetable fibre is put into 105 DEG C, dry, room temperature is dried, rap that to remove to pectin and be crushed to diameter be 3-6mm again with skin hammer, being placed on mass concentration is soak 24 hours in the water soluble phenol resin of 10%, press dry post-drying, air blast to the state of seething sprays into vaporific methyl-silicone oil, dries;

(2) diatomite is calcined 1-2 hour at 615-685 DEG C, cooling adds flyash, silicon ash, nano-calcium carbonate agitation grinding 30-40 minute, add aluminium nitride and be warming up to 225-255 DEG C of stirring 5-10 minute, be cooled to 50-80 DEG C, add ethyleneglycol dimethyacrylate to continue to stir 13-15 minute, be cooled to room temperature, dry porphyrize;

(3) sal enixum be dissolved in water and stir 10-15 minute, add step (1), (2) reaction mass stirring and evenly mixing, add silicate cement and other remaining components stirring 20-30 minute again, add forming machine shaping, after 20-30h, obtain finished product through cutting, the demoulding, natural curing successively.