CN1247211A - Formula of compound magnesia material and technology for making big plastic hot-shed with it - Google Patents
Formula of compound magnesia material and technology for making big plastic hot-shed with it Download PDFInfo
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- CN1247211A CN1247211A CN 98117957 CN98117957A CN1247211A CN 1247211 A CN1247211 A CN 1247211A CN 98117957 CN98117957 CN 98117957 CN 98117957 A CN98117957 A CN 98117957A CN 1247211 A CN1247211 A CN 1247211A
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Abstract
A skeleton of big plastic greenhouse for agricultural planting or cultivating is made up of magnesium oxide, magnesium chloride, aluminium ammonium sulfate, wallastonite powder, polyvinyl alcohol, rice husk ash, broken rice husk, pigment and glass fibre through reaction between magnesium oxide, magnesium chloride and aluminium ammonium sulfate, mixing with other raw materials, stirring, moulding, curing and drying.
Description
The present invention relates to the prescription and the production technique of a kind of agricultural planting, the needed greenhouse of breed big plastic hot-shed with it.
At present, domestic production magnesite (magnesium oxide) composite product, though several times setback are risen and fallen, it with of many uses, economical, societal benefits are remarkable, cause the society great attention.The producer that has produces big plastic hot-shed with it with magnesite material, though cost is low, save timber, steel, owing to there is defective, can not apply together, and its weak point is as follows:
One, adopt the urea-formaldehyde resin Diazolidinyl Urea in the prescription, formaldehyde is not only harmful also to be unfavorable for the plant and animal growth, and the organic adhesion agent that adopts other then cost increases; Two, the muscle material in the skeleton is most adopts waddy, bamboo reinforcement, reed, because manual production, if it is bad to give treatment technology, not only the sectional area of skeleton increases, and mechanical strength is also relatively poor; Three, because prescription is not suitable at wet environment,, influenced the work-ing life of skeleton so it is more serious to return halogen.
Task of the present invention provides that a kind of prescription is simple, and cost is low, and the big-canopy framework sectional area after the moulding is little, but mechanical strength height, nontoxic, tasteless, humidity, halogenation, life-span long, easy for installation, time saving and energy saving, can save a large amount of timber and steel.
Framework formula for greenhouse of the present invention is applicable to manual production, molded and shaped very much, and all not contain Toxic matter, its formula material and weight ratio (kg) as follows for employed various materials in the prescription:
1, magnesite (magnesium oxide): have the magnesite that uses in the alumina, prescription of high-content aluminum oxide and contain magnesium oxide 80～85%, it is that main material, the amount ratio of big plastic hot-shed with it is 100.
2, magnesium chloride hexahydrate: use commercial grade, contain magnesium chloride 45～50%, be reacted into tackiness agent with magnesium oxide, be bonded together with other material, form hard object, and play smooth interaction in goods, amount ratio is 71～82.
3, exsiccated ammonium alum: generate hard crystalline material with magnesium oxide, magnesium chloride, consumption is 1.80～1.85.
4, silica ashes: be a kind of multi-usage non-metallic material that have, shrinkability is little, impact strength height (35～45Kg/cm
2), film-formation result is good and can suppress product and return the halogen phenomenon in wet environment in goods, but requires wollastonite powder 320 orders, and its consumption is 3～4.
5, polyvinyl alcohol glue: after the polyvinyl alcohol in-depth is a kind of nontoxic high-quality glue, can organically stopping composition be combined as a whole, and can improve the density of goods, the space of sealing material, and its consumption is 4.5～6.0.
6, rice hull ash: be the remaining ash content in moist closet rice husk ashing furnace burning back, account for 20% of rice husk gross weight, contain 95～9.8% silicic anhydride and unformed silicon in the ash content, can suppress to return halogen, its consumption is 3～4.
7, broken rice husk: with rice husk coarse breaking one time, thick, the thin shell powder in broken back all uses, and contains robust fibre 30-45% in the rice husk, xylogen 21～26%, amorphous silica 20%, ash 7～9%, very strong with above-mentioned material avidity, can play the effect of aggregate, its consumption is 7～10.
8, oxalic acid: be the potential of hydrogen of regulating material, its consumption equals 7 for regulating pH value.
9, glass cloth, silk: as lacing wire and stiffening web, can increase the intensity and the toughness of goods, but require no wax, middle alkali or alkali-free all can.Its consumption is 1.2～2.0.
10, colorant: can be according to liking and needs are dosed shades of colour, but will select alkaline-resisting light-resistant pigment for use, as cobalt blue acid and alkali-resistance, fast light solarization, or alkaline-resisting light-resistant pigment such as chromoxide green.
It is pointed out that above-mentioned prescription transfers when rare as the face cloth, can increase the polyvinyl alcohol glue; When coagulating the soup, can increase rice hull ash or broken rice husk as bed material; But utilize above-mentioned prescription to use mould manual production semiellipse type (1/2 oval type) big plastic hot-shed with it, size can be selected: semiellipse type base is 45～46mm, high 45～the 47mm of semiellipse type, the radius 17mm of semiellipse type tip circle, and can suitably strengthen or dwindle half elliptic sectional area according to the factors such as wind-force of various places, also can utilize above-mentioned prescription to produce the big plastic hot-shed with it of other shape.
The production technique of big-canopy framework of the present invention is:
A. water transfers to U.S. degree 27～29 degree with magnesium chloride, takes by weighing required weight in proportion, injects the spice bucket.
B. exsiccated ammonium alum is added in the liquid of a in proportion, fully stirring and dissolving;
C. magnesium oxide is joined in a, the b liquid and stirred 5～10 minutes, it is fully reacted with stirrer or portable agitator;
D. wollastonite powder is joined and continue in a, b, the c glue to stir
E. the water injection reactor with 5 times of polyvinyl alcohol heats up 60～85 ℃, adds polyvinyl alcohol, intensification again, stops temperature after the dissolving fully, is added to after cooling, the filtration and continues stirring in the abcd glue;
F. add rice hull ash, broken rice husk, colorant then in proportion successively, fully mix, make it to become semi-fluid pasty state glue, regulate pH value with oxalic acid at last and equal 7, all operating process is about 25 minutes, and thick dilution is regulated with rice hull ash, polyvinyl alcohol glue and is the finished product slurry.One deck slurry is smeared in surface in mould by elder generation during article of manufacture, irregular subsequently shop earlier adds the layer of glass fiber silk, and have thorough grasp slurry, can make the surface of goods produce marmorean decorative pattern like this, and then do down one deck, the limit is reinforced, the limit adds glass cloth, silk requires to be no less than on the entire cross section glass cloth more than 5 layers, silk is to increase mechanical strength, it is floating at last mould to be filled it up with slurry, send into the moulding of moist closet heat preservation solidification, or room temperature natural curing moulding, when temperature got final product demoulding during at 10～15 ℃ in 24 hours, got final product the demoulding in 6-8 hour in the time of more than 30 ℃, carry out dry maintenance behind the demoulding and be finished product.
Advantage of the present invention is:
Qualified finished product, fracture are conchoidal, and density is very high, the wet environment halogenation, high temperature does not expand, low temperature does not shrink, and protection against corrosion, anti-damaging by worms are by the big-canopy framework of above-mentioned prescription production, use in the harsh climate environment northeastward and do not find any untoward reaction in 2 years, the superiority that has fully shown magnesite product, price are lower than timber, steel, and specification can be diversified, be convenient to install, the practical value height is easy to promote for this reason, helps the development with plantation, aquaculture.
Next table is the Chemical Composition (weight %) of 3 groups of embodiment of the present invention
| Rice hull ash | ????3 | ????3.5 | ????4 |
| Pulverize rice husk | ????7 | ????8.5 | ????10 |
| Colorant (acid and alkali-resistance, sun-proof) | Decide flexibly as required | ||
| Oxalic acid (in right amount) | Adjust pH value and equal 7 | ||
| Glass cloth silk (no wax, middle alkali or alkali-free) | ????1.2 | ????1.5 | ????1.8 |
The each component that last tabular goes out all can, molded and shaped produce ideal big plastic hot-shed with it manual according to different situations by the method for the invention.
Claims (7)
1, a kind of prescription of magnesite composite big plastic hot-shed with it and production technique, its formula material and weight ratio (Kg) are: magnesium chloride solution (Be ° 27～29) 71～82, exsiccated ammonium alum 1.80～1.85, magnesium oxychloride (magnesium oxide) 100, wollastonite powder 3～4, polyvinyl alcohol glue 4.5～6, rice hull ash 3～4, broken rice husk 7～10, colorant is an amount of, glass cloth silk 1.2～2.0, oxalic acid is an amount of.
2, the prescription of magnesite composite big plastic hot-shed with it according to claim 1 and production technique, the wollastonite powder in it is characterized in that filling a prescription must be more than 320 orders.
3, the prescription of magnesite composite big plastic hot-shed with it according to claim 1 and production technique, polyethylene PYA17-99 in it is characterized in that filling a prescription, the water injection reactor of 5 times of polyvinyl alcohol is heated up 60～85 ℃, add polyvinyl alcohol, intensification again, stop temperature, cooling, filtration after the dissolving fully.
4, the prescription of magnesite composite big plastic hot-shed with it according to claim 1 and production technique, the broken rice husk in it is characterized in that filling a prescription, only broken one time, thick, thin, shell, powder all use.
5, the prescription and the production technique of water chestnut aluminum composite big plastic hot-shed with it according to claim 1, glass cloth, silk in it is characterized in that filling a prescription must be no wax, middle alkali or alkali-free.
6, the prescription of magnesite composite big plastic hot-shed with it according to claim 1 and production technique, the colorant in it is characterized in that filling a prescription must be selected sun-proof, acid and alkali-resistance pigment for use, and as cobalt blue, consumption is arbitrarily decided as required.
7, the prescription of magnesite composite shed skeleton of the present invention and production technique, its production technique is:
A. water transfers to degree Beaume 27～29 degree with magnesium chloride, takes by weighing required weight in proportion, injects the spice bucket;
B. exsiccated ammonium alum is added in the liquid of a in proportion, fully stirring and dissolving;
C. magnesium oxide is joined in the liquid of a, b and stirred 5～10 minutes, it is fully reacted with stirrer or portable agitator;
D. wollastonite powder is joined and continue in a, b, the c glue to stir;
E. the water injection reactor with 5 times of polyvinyl alcohol heats up 60～85 ℃, adds polyvinyl alcohol again, heats up, and stops after the dissolving fully to join continuation stirring in a, b, c, the d glue after temperature, cooling, the filtration;
F. add rice hull ash then in proportion successively, broken rice husk, colorant, fully mix, make it to become semi-fluid pasty state glue, regulate pH value with oxalic acid at last and equal 7, all operating process is about 25 minutes, thick dilution is with rice hull ash, the polyvinyl alcohol glue is regulated, and one deck slurry is smeared on the surface in mould then, and irregular subsequently shop earlier adds the layer of glass fiber silk, and have thorough grasp slurry, make product surface produce marbling, and then do down one deck, the limit is reinforced, the limit adds glass cloth, silk, require to be no less than glass cloth more than 5 layers on the entire cross section, silk, it is floating at last mould to be filled it up with slurry, sends into the moist closet curing molding, or room temperature natural curing moulding, when temperature 24 hours demouldings during at 10～15 ℃, got final product demoulding in 6～8 hours in the time of more than 30 ℃, carry out dry maintenance behind the demoulding and be finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98117957 CN1247211A (en) | 1998-09-09 | 1998-09-09 | Formula of compound magnesia material and technology for making big plastic hot-shed with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98117957 CN1247211A (en) | 1998-09-09 | 1998-09-09 | Formula of compound magnesia material and technology for making big plastic hot-shed with it |
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| Publication Number | Publication Date |
|---|---|
| CN1247211A true CN1247211A (en) | 2000-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98117957 Pending CN1247211A (en) | 1998-09-09 | 1998-09-09 | Formula of compound magnesia material and technology for making big plastic hot-shed with it |
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| CN (1) | CN1247211A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101920516A (en) * | 2010-07-27 | 2010-12-22 | 南昌大学 | One-time reinforcing bar-arranging and rapid forming method of magnesite composite agricultural shed support |
| CN103043994A (en) * | 2013-01-23 | 2013-04-17 | 武汉理工大学 | High-strength efficient cement-based light transmission material and preparation method thereof |
-
1998
- 1998-09-09 CN CN 98117957 patent/CN1247211A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101920516A (en) * | 2010-07-27 | 2010-12-22 | 南昌大学 | One-time reinforcing bar-arranging and rapid forming method of magnesite composite agricultural shed support |
| CN101920516B (en) * | 2010-07-27 | 2011-12-21 | 南昌大学 | One-time reinforcing bar-arranging and rapid forming method of magnesite composite agricultural shed support |
| CN103043994A (en) * | 2013-01-23 | 2013-04-17 | 武汉理工大学 | High-strength efficient cement-based light transmission material and preparation method thereof |
| CN103043994B (en) * | 2013-01-23 | 2015-02-04 | 武汉理工大学 | High-strength efficient cement-based light transmission material and preparation method thereof |
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