CN102173723A - Dolomite magnesium cement composite ventilating duct and manufacturing method thereof - Google Patents
Dolomite magnesium cement composite ventilating duct and manufacturing method thereof Download PDFInfo
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- CN102173723A CN102173723A CN2011100340705A CN201110034070A CN102173723A CN 102173723 A CN102173723 A CN 102173723A CN 2011100340705 A CN2011100340705 A CN 2011100340705A CN 201110034070 A CN201110034070 A CN 201110034070A CN 102173723 A CN102173723 A CN 102173723A
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- magnesium chloride
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Abstract
The invention relates to a dolomite magnesium cement composite ventilating duct and a manufacturing method thereof. The manufacturing method comprises the following steps: taking out 1.00 part by mass of caustic dolomite powder, 0.12-0.40 part by mass of magnesium chloride, 0.10-0.60 part by mass of light filler, 0.05-0.30 part by mass of inert filler, 0.44-1.20 parts by mass of water and 0.05-0.15 part by mass of heat insulating material; dissolving the magnesium chloride in water to form a magnesium chloride solution, and mixing the solution with the caustic dolomite powder, light filler, inert filler and heat insulating material to form a slurry; injecting the slurry into a mold, laying a proper amount of reinforcing material, curing for 18-24 hours, and demolding; and after demolding, curing at 10-40 DEG C under the relative humidity of air of lower than 80% for 20-28 days. The ventilating duct has the advantages of fire resistance, heat insulation, high strength, favorable durability, corrosion resistance, shock resistance, favorable constructability, simple production technique, low energy consumption and the like.
Description
Technical field
The present invention relates to the chemical building field, specifically be meant a kind of rhombspar magnesium cementitious composite ventilator trunk and manufacture method thereof.
Background technology
Along with the fast development of Building Trade in China, many squares, underground parking lot, factory building etc. all need to use in a large number ventilator trunk.Traditional ventilator trunk is made material and is generally selected galvanized sheet iron and resin base glass reinforced plastic for use, but all there is serious deficiency in these two kinds of pipelines, and the galvanized sheet iron ventilator trunk is damaged by corrosion in wet environment easily, life-span is no more than 10 years, easily produce resonance, noise is big, and fire-resistant critical temperature is low; Resin base glass fibre reinforced plastics ventilation pipeline easy firing also fails to solve fully even add fire retardant.
So far a kind of is matrix with the magnesia oxychloride cement, is strongthener with the glass fibre, adds the inorganic glass fibre reinforced plastics ventilation pipeline (claiming the magnesite ventilator trunk again) that suitable packing material and properties-correcting agent etc. make and begins to use.Because the magnesite ventilator trunk is a kind of inorganic materials, it has fire prevention, performance such as corrosion-resistant, and production cost is low, and production technique is simple, and facility investment is few, and profit is higher.Yet the main raw material magnesium oxychloride of producing magnesite ventilator trunk goods at present claims light-burning magnesium powder or magnesia again, mainly concentrate on Liaoning, Shandong in China magnesite starting material production and supply base, limited by the resource region, the raw-material transportation cost of magnesite has improved the cost of magnesite ventilator trunk greatly, thereby restricted the development of magnesite ventilator trunk industry, also limited its popularization.
Summary of the invention
The present invention provides a kind of rhombspar magnesium cementitious composite ventilator trunk and manufacture method thereof for overcoming above deficiency.
To achieve the object of the present invention, the manufacture method of this rhombspar magnesium cementitious composite ventilator trunk may further comprise the steps:
(1), caustic dolomite powder, magnesium chloride, water being pressed mass ratio 1.00: 0.12～0.40: 0.44～1.20 takes out, the formation magnesium chloride solution at first is dissolved in the water the hydrate of magnesium chloride or magnesium chloride, then magnesium chloride solution is mixed stirring with the caustic dolomite powder, form caustic dolomite magnesium cement slurry;
(2), caustic dolomite magnesium cement slurry is injected particular manufacturing craft, an amount of supporting material is put in the shop, solidifies the demoulding after 18～24 hours;
(3), after the demoulding 10～40 ℃, relative air humidity less than 80% condition under maintenance, curing time 20-28 days.
The caustic dolomite powder is the product that obtains after the dolomite mineral roasting.
Also comprise in the above-mentioned manufacture method and use light filler, inert filler, lagging material, during manufacturing magnesium chloride solution is mixed stirring with caustic dolomite powder, light filler, inert filler, lagging material, form caustic dolomite magnesium cement slurry, wherein caustic dolomite powder, magnesium chloride, light filler, inert filler, water and lagging material are pressed mass ratio 1.00: 0.12～0.40: 0.10～0.60: 0.05～0.30: 0.44～1.20: 0.05～0.15.
Light filler is sawdust or straw end or rice husk or straw powder or its mixture, and inert filler is flyash or talcum powder or slag powders or its mixture, and lagging material is pearlstone or expanded vermiculite or its mixture, and supporting material is middle alkali glass screen cloth.
Caustic dolomite powder, magnesium chloride, light filler, inert filler, water and lagging material are 1.00: 0.12～0.30: 0.10～0.30: 0.05～0.15: 0.44～0.80: 0.05～0.15 by quality proportion optimization scheme.
Another object of the present invention provides a kind of rhombspar magnesium cementitious composite ventilator trunk:
This ventilator trunk body is made up of caustic dolomite powder, magnesium chloride, light filler, inert filler, water and lagging material at least, and its mass ratio is 1.00: 0.12～0.40: 0.10～0.60: 0.05～0.30: 0.44～1.20: 0.05～0.15.
This ventilator trunk body also is included in the supporting material that is provided with in the ventilator trunk body, and supporting material comprises several layers glass fibre screen cloth, and the glass fibre screen cloth makes body construction have high intensity.
The invention has the advantages that, this rhombspar magnesium cementitious composite ventilator trunk has simple, the low power consumption and other advantages of fire prevention, insulation, intensity height, good endurance, anticorrosion, shockproof, easy construction, environmental protection and energy saving and production technique, it is the renewal product that substitutes ventilator trunk materials such as various metal vents, glass reinforced plastic vent-pipe, PVC vent-pipe, belong to green structural material, can be widely used in building field.Except that the dolomite mineral resource distribution is extensive in addition, almost national each province all has, reserves are abundanter, make full use of the dolomite mineral resource, locally draw materials, will reduce the cost of producing this product, the application of expansion rhombspar magnesium cement material, various places economy and China are energy-saving and cost-reducing to have great importance in order to develop.
Description of drawings
Fig. 1 is a manufacturing process flow diagram of the present invention.
Embodiment
The present invention is further described with embodiment below in conjunction with accompanying drawing:
This rhombspar magnesium cementitious composite ventilator trunk and manufacture method thereof, its concrete technical process can be summarised as method at first caustic dolomite powder, magnesium chloride, light filler, inert filler, water and lagging material are taken out by mass ratio 1.00: 0.12～0.40: 0.10～0.60: 0.05～0.30: 0.44～1.20: 0.05～0.15 as shown in Figure 1; The formation magnesium chloride solution that then hydrate of magnesium chloride or magnesium chloride is dissolved in the water is mixed with magnesium chloride solution and caustic dolomite powder, light filler, inert filler, lagging material mixture and stirs, formation caustic dolomite magnesium cement slurry; The caustic dolomite powder is to obtain after the dolomite mineral roasting, light filler is sawdust or straw end or rice husk or straw powder or its mixture, inert filler is flyash or talcum powder or slag powders or its mixture, lagging material is pearlstone or expanded vermiculite or its mixture, then caustic dolomite magnesium cement slurry is injected particular manufacturing craft, an amount of supporting material is put in the shop, and supporting material is middle alkali glass screen cloth, solidifies the demoulding after 18～24 hours; After the demoulding 10～40 ℃, relative air humidity less than 80% condition under maintenance, curing time 20-28 days.The present invention is further specified in conjunction with the embodiment in concrete the application according to above-mentioned technical characterictic below.
Embodiment 1
This rhombspar magnesium cementitious composite ventilator trunk and the manufacture method thereof of present embodiment comprise: at first get caustic dolomite powder 10.00kg, magnesium chloride 1.20kg, straw powder 1.00kg, talcum powder 0.50kg, pearlstone 0.50kg, water 4.40kg; Then with the water-soluble formation magnesium chloride solution of magnesium chloride, magnesium chloride solution and unclassified stores stir in agitator, make caustic dolomite magnesium cement slurry; It is two-layer to put the glass fibre screen cloth at the particular manufacturing craft middle berth then, injects caustic dolomite magnesium cement slurry, under 10 ℃ of conditions of envrionment temperature, and forming and hardening demoulding after 18 hours; At 10 ℃, relative air humidity is less than being product after the maintenance to 28 under 80% condition day after the demoulding.
Its key technical indexes is as follows after measured:
Bending strength: 72MPa, coefficient of softening: 0.90, water-intake rate: 7.0%, apparent density: 1800kg/m
3, flange resistance to impact shock: 30kJ/m
2, combustionproperty: incombustible material A level.
Embodiment 2
This rhombspar magnesium cementitious composite ventilator trunk and manufacture method thereof, comprise: at first get caustic dolomite powder 10.0kg, magnesium chloride 4.0kg, sawdust 6kg, flyash 3.0kg, expanded vermiculite 1.5kg, water 12.0kg, then with the water-soluble formation magnesium chloride solution of magnesium chloride, magnesium chloride solution and unclassified stores stir in agitator, make caustic dolomite magnesium cement slurry; It is two-layer to put the glass fibre screen cloth at the mould middle berth then, injects caustic dolomite magnesium cement slurry, under 10 ℃ of conditions of envrionment temperature, and forming and hardening demoulding after 18 hours; At 10 ℃, relative air humidity is less than being product after the maintenance to 28 under 80% condition day after the demoulding.
Its key technical indexes is as follows after measured:
Bending strength: 68MPa, coefficient of softening: 0.88, water-intake rate: 0.75%, apparent density: 1500kg/m
3, flange resistance to impact shock: 26kJ/m
2, combustionproperty: incombustible material A level.
Embodiment 3
This rhombspar magnesium cementitious composite ventilator trunk and manufacture method thereof, comprise: at first get caustic dolomite powder 10.0kg, magnesium chloride 3.0kg, powdered rice hulls 3kg, slag powders 1.5kg, pearlstone 1.5kg, water 8.0kg, then with the water-soluble formation magnesium chloride solution of magnesium chloride, magnesium chloride solution and unclassified stores stir in agitator, make caustic dolomite magnesium cement slurry; It is two-layer to put the glass fibre screen cloth at the mould middle berth then, injects caustic dolomite magnesium cement slurry, under 10 ℃ of conditions of envrionment temperature, and forming and hardening demoulding after 18 hours; At 10 ℃, relative air humidity is less than being product after the maintenance to 20 under 80% condition day after the demoulding.
Its key technical indexes is as follows after measured:
Bending strength: 70MPa, coefficient of softening: 0.89, water-intake rate: 7.3%, apparent density: 1600kg/m
3, flange resistance to impact shock: 28kJ/m
2, combustionproperty: incombustible material A level.
Look product materials proportioning situation and maintenance envrionment conditions when maintenance needs after the demoulding, generally needed 28-35 days can reach requirement.
Be not difficult to find out that from the foregoing description the manufacture craft of this rhombspar magnesium cementitious composite ventilator trunk is simple, energy waste is low, and manufacture method is many, can satisfy product application aborning; On technology, can effectively control its cost, from product design, can satisfy service requirements, so this rhombspar magnesium cementitious composite ventilator trunk is a superior prod that substitutes various metal vents, glass reinforced plastic vent-pipe, PVC vent-pipe by material and manufacture method.
Claims (10)
1. the manufacture method of a rhombspar magnesium cementitious composite ventilator trunk is characterized in that: may further comprise the steps:
(1), caustic dolomite powder, magnesium chloride, water being pressed mass ratio 1.00: 0.12～0.40: 0.44～1.20 takes out, the formation magnesium chloride solution at first is dissolved in the water the hydrate of magnesium chloride or magnesium chloride, then magnesium chloride solution is mixed stirring with the caustic dolomite powder, form caustic dolomite magnesium cement slurry;
(2), caustic dolomite magnesium cement slurry is injected particular manufacturing craft, an amount of supporting material is put in the shop, solidifies the demoulding after 18～24 hours;
(3), after the demoulding 10～40 ℃, relative air humidity less than 80% condition under maintenance, curing time 20-28 days.
2. the manufacture method of rhombspar magnesium cementitious composite ventilator trunk according to claim 1 is characterized in that: described caustic dolomite powder is the product that obtains after the dolomite mineral roasting.
3. the manufacture method of rhombspar magnesium cementitious composite ventilator trunk according to claim 1, it is characterized in that: also comprise light filler, inert filler, lagging material, magnesium chloride solution is mixed stirring with caustic dolomite powder, light filler, inert filler, lagging material, form caustic dolomite magnesium cement slurry, wherein caustic dolomite powder, magnesium chloride, light filler, inert filler, water and lagging material are pressed mass ratio 1.00: 0.12～0.40: 0.10～0.60: 0.05～0.30: 0.44～1.20: 0.05～0.15.
4. the manufacture method of rhombspar magnesium cementitious composite ventilator trunk according to claim 3 is characterized in that: described light filler is sawdust or straw end or rice husk or straw powder or its mixture.
5. the manufacture method of rhombspar magnesium cementitious composite ventilator trunk according to claim 3 is characterized in that: described inert filler is flyash or talcum powder or slag powders or its mixture.
6. the manufacture method of rhombspar magnesium cementitious composite ventilator trunk according to claim 3 is characterized in that: described lagging material is pearlstone or expanded vermiculite or its mixture.
7. the manufacture method of rhombspar magnesium cementitious composite ventilator trunk according to claim 1 is characterized in that: described supporting material is middle alkali glass screen cloth.
8. according to the manufacture method of each described rhombspar magnesium cementitious composite ventilator trunk in the claim 3 to 7, it is characterized in that: described caustic dolomite powder, magnesium chloride, light filler, inert filler, water and lagging material are 1.00: 0.12～0.30: 0.10～0.30: 0.05～0.15: 0.44～0.80: 0.05～0.15 by the quality proportioning.
9. rhombspar magnesium cementitious composite ventilator trunk, it is characterized in that: this ventilator trunk body is made up of caustic dolomite powder, magnesium chloride, light filler, inert filler, water and lagging material at least, and its mass ratio is 1.00: 0.12～0.40: 0.10～0.60: 0.05～0.30: 0.44～1.20: 0.05～0.15.
10. rhombspar magnesium cementitious composite ventilator trunk according to claim 9, it is characterized in that: described ventilator trunk body also is included in the supporting material that is provided with in the ventilator trunk body, and supporting material comprises several layers glass fibre screen cloth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100340705A CN102173723A (en) | 2011-01-31 | 2011-01-31 | Dolomite magnesium cement composite ventilating duct and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100340705A CN102173723A (en) | 2011-01-31 | 2011-01-31 | Dolomite magnesium cement composite ventilating duct and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446314A (en) * | 2014-11-04 | 2015-03-25 | 北京工业大学 | Lightweight keel for fabricated external wall heat insulation system and preparation method of lightweight keel |
| CN111704420A (en) * | 2020-05-30 | 2020-09-25 | 同济大学 | Corrosion-resistant aluminate cement pipeline and preparation method thereof |
| CN114439186A (en) * | 2022-02-21 | 2022-05-06 | 南京林业大学 | Surface non-combustible composite material plate and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237672A (en) * | 1998-05-29 | 1999-12-08 | 王俊华 | Air channel and its making and forming method |
| CN101104294A (en) * | 2007-07-26 | 2008-01-16 | 武汉工程大学 | Application of magnesia oxychloride cement |
-
2011
- 2011-01-31 CN CN2011100340705A patent/CN102173723A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237672A (en) * | 1998-05-29 | 1999-12-08 | 王俊华 | Air channel and its making and forming method |
| CN101104294A (en) * | 2007-07-26 | 2008-01-16 | 武汉工程大学 | Application of magnesia oxychloride cement |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446314A (en) * | 2014-11-04 | 2015-03-25 | 北京工业大学 | Lightweight keel for fabricated external wall heat insulation system and preparation method of lightweight keel |
| CN111704420A (en) * | 2020-05-30 | 2020-09-25 | 同济大学 | Corrosion-resistant aluminate cement pipeline and preparation method thereof |
| CN114439186A (en) * | 2022-02-21 | 2022-05-06 | 南京林业大学 | Surface non-combustible composite material plate and manufacturing method thereof |
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Application publication date: 20110907 |