CN1279221A - Thermally insulating material for building - Google Patents
Thermally insulating material for building Download PDFInfo
- Publication number
- CN1279221A CN1279221A CN99109400A CN99109400A CN1279221A CN 1279221 A CN1279221 A CN 1279221A CN 99109400 A CN99109400 A CN 99109400A CN 99109400 A CN99109400 A CN 99109400A CN 1279221 A CN1279221 A CN 1279221A
- Authority
- CN
- China
- Prior art keywords
- insulating material
- thermally insulating
- building
- magnesium
- magnesium chloride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/30—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing magnesium cements or similar cements
- C04B28/32—Magnesium oxychloride cements, e.g. Sorel cement
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
A thermally insulating material for building is prepared from straw or stalk of crops as aggregate and magnesium cement as adhesive in weight ratio of 1:(2.5-4.0). Its advantages include no environmental pollution, low cost and high insulating performance.
Description
The present invention relates to material of construction, specifically have the light building material of heat-insulating property.
Thermally insulating material for building is surpassing important effect in reducing the daily use energy consumption of building.In today that energy order is becoming tight, the development of thermally insulating material for building is subject to people's attention especially.Present thermally insulating material for building has many kinds such as rock mineral wool, glass wool, pearlstone, porous plastics, and these materials have good heat-insulating property mostly, but the defective that also exists some self to be difficult to overcome.As the rock mineral wool, though its insulation heat-insulating property is fine,, itself want consumes energy so produce this material because it need adopt raw material centrifuging or winding-up legal system cotton, collection cotton, moulding again after molten appearance the under 1500 ℃ of high temperature when producing, its processing requirement is also higher, so the product price is higher.At present the rock mineral wool abroad the flourishing country of industry to be used for building heat preservation quite general, but in China, be used for industrial heat preservation fields such as oil, chemical industry, generating more than now, the ratio that is used for building heat preservation is less; Porous plastics, be to be base-material with various resins, add whipping agent, subsidiary material such as catalyzer, stablizer, through heating, foaming forms, because its starting material are organic compound, in manufacturing process, can bring pollution to ecotope inevitably, bring somatic damage for the workman who is engaged in the manufacturing.Thereby this kind neither a kind of ideal thermally insulating material for building.For addressing these problems, pearlstone is listed in national new technology spread main project, various expanded perlite products are come out one after another, as the disclosed high temperature expansion pearlite insulated material of CN1037697 is exactly wherein a kind of, and it is made up of pearlstone, china clay, magnesium oxide and auxiliary material.Though this material has reduced the cost of thermally insulating material for building to a certain extent, the environmental pollution of having avoided foam production to bring, but ideal thermally insulating material for building very, because this goods are to be main raw with the pearlstone, and the essential process of pearlstone itself is with the perlite fragmentation, classification, preheating, high-temperature roasting, instantaneous rapid heating expansible technological process just can be made, thereby raw materials for production itself still need expend a large amount of energy and manpower, its product price can not reduce naturally significantly, moreover, perlite is not desirable everywhere, renewable resources must be subjected to the restriction of natural condition in the production use.Be subjected to the deadweight that influences its goods of raw material weight also bigger in addition, the load-bearing that is not easy to alleviate buildings.How can find a kind of with make full use of the nature renewable resource, avoid environmental pollution, lightweight and the material of construction that has good thermo-insulation properties simultaneously, be the problem that people explore for a long time.
Purpose of the present invention just provides a kind of like this thermally insulating material for building, and it is a raw material with natural renewable resource, and its production preparation process can effectively avoid destroying ecotope, draws materials conveniently, cheap, light weight, excellent heat insulating performance.
The object of the present invention is achieved like this: selecting the crop stalk powder for use is aggregate, is tackiness agent with the magnesium cement, is 1: 2.5-4.0 prescription by weight ratio, is mixed with.
Crop stalk can be selected various farm crop thing straws such as corn, jowar, beans, cotton, wheat, paddy rice for use, but with the present economic use value crop stalk low than rate such as corn, jowar, beans, cotton is the best, can further reduce raw-material cost like this.
The fineness of crop stalk powder is preferably 5-10mm, can guarantee that like this straw powder and magnesium cement can be fully bonding, guarantees that product has good ultimate compression strength and less thermal conductivity.
The consumption proportion of crop stalk powder of the present invention and magnesium cement is very crucial, when the magnesium cement interpolation is heavily very few, prepared material hardness is not enough, when its consumption is too much, though hardness is enhanced, but the heat-insulating property of prepared material is restricted again, so will be chosen in 1: 2.4～4.0 weight ranges.Best ratio range is 1: 3～3.5.
Magnesium cement among the present invention can be to be formed by magnesium oxide and the magnesium chloride solution system of mixing, and also can be that magnesium oxide and Adlerika mix, but preferably the former, so not only can further reduce cost, and can guarantee that its effect is better.
The magnesium oxide in the magnesium cement and the weight proportion of magnesium chloride solution preferably be selected in 1: 0.6～1.4 scopes within, best ratio range is 1: 0.8～1.This be because, when the magnesium chloride solution consumption was too much, the heat-insulating property of finished product weakened thereupon, when the magnesium chloride solution consumption was very few, though heat-insulating property has strengthened, the intensity of its finished product was affected.
Its concentration of magnesium chloride solution among the present invention is preferably 28-32%, can further guarantee the effect of magnesium cement in goods like this.
Concrete manufacture method of the present invention is:
A. select exsiccant farm crop bar, be ground into the end;
B. magnesium chloride or Adlerika are added in the magnesium oxide, be modulated into the pasty state magnesium cement;
C. the pasty state magnesium cement is added in the crop stalk powder, stir, as dry and cracked shapeless, can add an amount of water again, can be shaped with it is as the criterion;
The mixture that d. will stir well shaping is packed in the mould, curing molding.
The present invention can be used as the various thermal insulator below 300 ℃, as the top layer that is used for buildings makes thermal baffle, also can be prefabricated into plate and place the wall interlayer to be used for heat insulation, sound insulation, also can be made into various models, is used for the heat-insulation and heat-preservation that pipeline etc. send heating equipment.
One of innovative point of the present invention is: the present invention designs a kind of crop stalk that makes full use of and makes aggregate, and formula combination is simple, the reasonable building thermal insulation material.Making full use of of crop stalk, particularly corn, Chinese sorghum, beans, plant straw that these present economic use values of cotton are lower can change the environmental pollution that burn processing these useless straws in rural area bring effectively.And crop stalk itself belongs to a kind of continuous regenerated resource year after year, this resource consumption increase will inevitably ease people to the excessive employing of nonrenewable resource.
Two of innovative point of the present invention is: search out a kind of extremely low thermally insulating material for building of energy consumption of producing own.The present invention fills a prescription simply, and production process only needs simple pulverizing and stirring, spontaneous curing to be shaped, thereby production thermally insulating material for building of the present invention has the effect of good energy-conservation consumption reduction.
Three of innovative point of the present invention is: search out the stoichiometric(al) scope of each component, can guarantee with the crop stalk to be that the thermally insulating material for building that aggregate is made has good heat-insulating property.
Four of innovative point of the present invention is that the crop stalk of having selected light weight is as single aggregate, and its finished product are than general thermally insulating material for building light 1/3-1/2.
Beneficial effect of the present invention is embodied in: not only having solved for a long time, people want to solve thermally insulating material for building production contaminate environment always, the problem that product price is high, and its finished product have good heat-insulating property and crushing resistance, use for a large amount of recovery of rural area crop stalk simultaneously and find an outlet.
Have the fire of chance with the thermal insulation material of manufacturing of the present invention and do not burn, the ultimate compression strength height (〉=2.0MPa) thermal conductivity α (0.1-0.14) is little, cost is low, the advantage of light weight.
Below be specific embodiments of the invention
Embodiment 1:
Select corn stalk for use, 200kg is ground into the end, and fineness is 15-20mm, 500kg magnesium cement (312.5kg magnesium oxide and 187.5kg concentration are that 30% magnesium chloride solution mixes) is put into the straw end stirs, add less water, stir all after, place in the mould natural air drying.
Its ultimate compression strength is 2.10, and thermal conductivity is 0.12.
Following examples 2-5 its preparation methods are all with embodiment 1, and just different on the consumption of each component, the performance of product is different.
| Embodiment | Straw (kg) | Magnesium cement (kg) and proportioning | Performance | |
| ????2 | Sorghum rod 5-10mm 200kg | ??800kg | The 335kg magnesium chloride | Ultimate compression strength 3.0MPa, thermal conductivity 1.4 |
| 30% magnesium chloride solution 465kg | ||||
| ????3 | Cotton bar 5-10mm 200kg | ??600kg | The 300kg magnesium chloride | Ultimate compression strength 2.1MPa thermal conductivity 0.1 |
| 28% magnesium chloride solution 300kg | ||||
| ????4 | The various straws of assorted bar 10mm 200kg mix | ??700kg | The 389kg magnesium chloride | Ultimate compression strength 2.7MPa thermal conductivity 0.12 |
| 32% magnesium chloride 311kg | ||||
| ????5 | Corn stalk 10-15m 200kg | ??600kg | The 400kg magnesium chloride | Ultimate compression strength 2.1 heat conduction marks 0.14 |
| The molten 200kg of 20% sal epsom | ||||
Claims (7)
1, a kind of thermally insulating material for building is characterized in that this material is an aggregate with the crop stalk powder, and magnesium cement is a tackiness agent, and its weight proportion is 1: 2.5～4.0.
2, thermally insulating material for building according to claim 1 is characterized in that said crop stalk is corn stalk, sorghum rod, cotton bar, beans plant bar.
3, thermally insulating material for building according to claim 1 is characterized in that said crop stalk powder fineness is 5-10mm.
4, the thermally insulating material for building of stating according to claim 1 is characterized in that said magnesium cement is made up of magnesium oxide and magnesium chloride solution.
5, thermally insulating material for building according to claim 5, the weight proportion that it is characterized in that said magnesium oxide and magnesium chloride solution is 1: 0.6-1.4.
6, thermally insulating material for building according to claim 6, the weight proportion that it is characterized in that said magnesium oxide and magnesium chloride solution is 1: 0.8-1.
7, thermally insulating material for building according to claim 5, the concentration that it is characterized in that said magnesium chloride solution is 28～32%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99109400A CN1279221A (en) | 1999-06-30 | 1999-06-30 | Thermally insulating material for building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99109400A CN1279221A (en) | 1999-06-30 | 1999-06-30 | Thermally insulating material for building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1279221A true CN1279221A (en) | 2001-01-10 |
Family
ID=5273888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99109400A Pending CN1279221A (en) | 1999-06-30 | 1999-06-30 | Thermally insulating material for building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1279221A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100368636C (en) * | 2005-04-04 | 2008-02-13 | 中国科学院寒区旱区环境与工程研究所 | Hollow concrete block for protecting perenial frozen soil road bed and slope |
| CN103449795A (en) * | 2013-08-25 | 2013-12-18 | 汪硕 | Magnesite straw concrete slab and manufacturing method thereof |
| CN104261760A (en) * | 2014-09-18 | 2015-01-07 | 常熟市康信节能材料工程有限公司 | Thermal-insulation energy-saving material |
| CN113698122A (en) * | 2021-10-27 | 2021-11-26 | 北京慕湖外加剂有限公司 | Modified plant material aggregate and lightweight concrete containing same |
-
1999
- 1999-06-30 CN CN99109400A patent/CN1279221A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100368636C (en) * | 2005-04-04 | 2008-02-13 | 中国科学院寒区旱区环境与工程研究所 | Hollow concrete block for protecting perenial frozen soil road bed and slope |
| CN103449795A (en) * | 2013-08-25 | 2013-12-18 | 汪硕 | Magnesite straw concrete slab and manufacturing method thereof |
| CN104261760A (en) * | 2014-09-18 | 2015-01-07 | 常熟市康信节能材料工程有限公司 | Thermal-insulation energy-saving material |
| CN104261760B (en) * | 2014-09-18 | 2016-06-22 | 常熟市康信节能材料工程有限公司 | Heat insulating energy saving material |
| CN113698122A (en) * | 2021-10-27 | 2021-11-26 | 北京慕湖外加剂有限公司 | Modified plant material aggregate and lightweight concrete containing same |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |