CN107573010A - A kind of stalk exterior wall thermal insulation brick and preparation method thereof - Google Patents
A kind of stalk exterior wall thermal insulation brick and preparation method thereof Download PDFInfo
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- CN107573010A CN107573010A CN201710993363.3A CN201710993363A CN107573010A CN 107573010 A CN107573010 A CN 107573010A CN 201710993363 A CN201710993363 A CN 201710993363A CN 107573010 A CN107573010 A CN 107573010A
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Abstract
The invention discloses a kind of stalk exterior wall thermal insulation brick and preparation method thereof, it is related to building material technical field, is made up of the raw material of following parts by weight：80 100 parts of agricultural crop straw, 38 parts of glass bead, 38 parts of vermiculite, 5 10 parts of flyash, 40 50 parts of magnesia, 36 parts of magnesium chloride, 10 20 parts of stone flour, 13 parts of polyphenylene sulfide powder, 36 parts of cement, 36 parts of calcium oxide, appropriate liquid nitrogen；Using the formula in the present invention, the exterior wall thermal insulation brick of preparation is functional, and intensity is high, thermal conductivity factor is small, is incubated, is in light weight, and cost is low, turns waste into wealth, and improves the application of stalk building material product.
Description
Technical field
The present invention relates to building material technical field, more particularly to a kind of stalk exterior wall thermal insulation brick and preparation method thereof.
Background technology
In Chinese more than 430 hundred million square metres building, 99% belongs to highly energy-consuming building.Even new building, also have
More than 95% is still high energy consumption, and unit area heating energy consumption is close equivalent to weather conditions in the world national two 3 times.Build
The standard brick built is used for load bearing wall, porous brick is used for frame structure filling wall, and wall does not reach the Gongjian 50% of national regulation, occupied
65% energy-saving heat preserving effect is built, therefore also needs to be incubated in exterior wall.
Because stalk building material product has wide application space, on the one hand can solve a large amount of crop straw burnings and cause environment dirty
Dye problem；On the other hand new outlet is have found to agricultural crop straw, can turned waste into wealth, channel is increased newly for peasant's extra earning.And
And the advantages that production cost of such product is relatively low, and properties of product are superior, such product will be caused to have stronger market competition
Power.Therefore rationally using existing resource exploitation meet national energy-saving insulation standard from heavy and light, the high materials for wall of intensity is mesh
The direction of preceding research and development.
The content of the invention
Based on technical problem existing for background technology, the present invention proposes a kind of stalk exterior wall thermal insulation brick and its preparation side
Method, the exterior wall thermal insulation brick of preparation is functional, has the characteristics that intensity is high, thermal conductivity factor is small, is incubated, is in light weight.
A kind of stalk exterior wall thermal insulation brick proposed by the present invention and preparation method thereof, technical scheme is as follows：
A kind of stalk exterior wall thermal insulation brick, is made up of the raw material of following parts by weight：Agricultural crop straw 80-100 parts, glass bead
3-8 parts, vermiculite 3-8 parts, flyash 5-10 parts, magnesia 40-50 parts, magnesium chloride 3-6 parts, stone flour 10-20 parts, polyphenylene sulfide powder
1-3 parts, cement 3-6 parts, calcium oxide 3-6 parts, appropriate liquid nitrogen.
Preferably, it is made up of the raw material of following parts by weight：Agricultural crop straw 90-100 parts, glass bead 5-7 parts, vermiculite 4-
6 parts, flyash 6-8 parts, magnesia 43-47 parts, magnesium chloride 3-6 parts, stone flour 12-16 parts, polyphenylene sulfide powder 1-3 parts, cement 4-6
Part, calcium oxide 4-6 parts, appropriate liquid nitrogen.
Preferably, the agricultural crop straw is one kind in wheat stalk, maize straw, straw.
Preferably, the particle diameter of the vermiculite is 0.1-0.3mm, hardness 1.2-1.4.
A kind of preparation method of stalk exterior wall thermal insulation brick, step are as follows：
S1, agricultural crop straw dried, roll, be added in 10%NaOH solution and be standing and soak for 15-20h, pull out, washed
To neutrality, dry, crush, obtain powder of straw；
S2, by vermiculite calcination process, then with 10% hydrochloric acid solution 1-2h is soaked, then be washed with deionized to neutrality, dried
It is dry, it is immersed into liquid nitrogen, keeps 10-20min, taken out, the vermiculite of liquid nitrogen must be loaded with；
S3, the powder of straw by step S1, glass bead, flyash, magnesia, magnesium chloride, stone flour, polyphenylene sulfide powder,
Cement, calcium oxide mixing, add suitable quantity of water, stir 5-10min, obtain compound I；
S4, with passage the vermiculite that liquid nitrogen is loaded with step S2 is added to middle part inside compound I, quickly
5-10s is stirred, obtains compound II；
S5, compound II mated formation into mould, be pressed into idiosome, dried；
S6, dried idiosome is sent into anaerobic calcining kiln and calcined, produced.
Preferably, the solid-liquid ratio of stalk and 10%NaOH solution is 1 in the step S1：5-10.
Preferably, vermiculite sintering temperature is 900-1000 DEG C in the step S2, is calcined 2-3h.
Preferably, pressing pressure is 10-20Mpa, press time 2-5min in the step S5.
Preferably, that is calcined in the step S6 concretely comprises the following steps：2-3h is first calcined at 100-120 DEG C, then is warming up to
30-60min is calcined at 430-450 DEG C, then is cooled at 160-180 DEG C and calcines 2-3h, then is warming up at 380-400 DEG C and calcines 2-
3h。
Compared with prior art, beneficial effects of the present invention are as follows：The present invention carries out alkali again after agricultural crop straw is rolled
Liquid immersion treatment, stalk surface wettability and adhesiveness can be improved, be easy to compression forming between stalk, and make using stalk
For the base material of insulating brick, there is the effect of light insulation, after anaerobic calcination processing, the carbonization of stalk interior section, intensity increase；
The stone flour of addition can strengthen the intensity of brick body；Glass bead have lightweight, anti-aging, water absorption rate is small, heat-insulating, fire-preventing, heat conduction system
The low excellent specific property of number, can be internally formed loose structure in brick body as light filling and insulation material, effectively reduce brick body
Thermal conductivity factor, and addition is smaller to the intensity effect of brick body within the specific limits；After high-temperature calcination, porosity increases vermiculite
Greatly, unit weight diminishes, then after HCl treatment, is immersed in liquid nitrogen, and its pore interior is full of liquid nitrogen, and in subsequent operation
Liquid nitrogen distils, and can also have good suction-operated to nitrogen, so as to being internally formed independent bubble in brick body, play sound insulation,
Block water, reduce thermal conductivity factor, the effect of insulation；The addition of flyash can reduce the dosage of cement, and with magnesia, chlorination
Other binder materials such as magnesium, cement coordinate, and can form more preferable grain composition；Polyphenylene sulfide powder can provide good machinery
Intensity and fire resistance；Using the formula in the present invention, the exterior wall thermal insulation brick of preparation is functional, intensity is high, thermal conductivity factor is small,
It is incubated, is in light weight, and cost is low, turns waste into wealth, and improves the application of stalk building material product.
Embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of stalk exterior wall thermal insulation brick, is made up of the raw material of following parts by weight：90 parts of agricultural crop straw, 6 parts of glass bead,
6 parts of vermiculite, 7 parts of flyash, 45 parts of magnesia, 5 parts of magnesium chloride, 15 parts of stone flour, 2 parts of polyphenylene sulfide powder, 5 parts of cement, calcium oxide 4
Part, appropriate liquid nitrogen.
A kind of preparation method of stalk exterior wall thermal insulation brick, step are as follows：
S1, agricultural crop straw dried, roll, be added in 10%NaOH solution and be standing and soak for 20h, pull out, washing is extremely
Neutrality, dry, crush, obtain powder of straw；
S2, by vermiculite calcination process, then with 10% hydrochloric acid solution 1h is soaked, then is washed with deionized to neutrality, drying,
It is immersed into liquid nitrogen, keeps 20min, taken out, the vermiculite of liquid nitrogen must be loaded with；
S3, the powder of straw by step S1, glass bead, flyash, magnesia, magnesium chloride, stone flour, polyphenylene sulfide powder,
Cement, calcium oxide mixing, add suitable quantity of water, stir 10min, obtain compound I；
S4, with passage the vermiculite that liquid nitrogen is loaded with step S2 is added to middle part inside compound I, quickly
10s is stirred, obtains compound II；
S5, compound II mated formation into mould, be pressed into idiosome, dried；
S6, dried idiosome is sent into anaerobic calcining kiln and calcined, produced.
Embodiment 2
A kind of stalk exterior wall thermal insulation brick, is made up of the raw material of following parts by weight：95 parts of maize straw, 6 parts of glass bead, leech
5 parts of stone, 7 parts of flyash, 46 parts of magnesia, 5 parts of magnesium chloride, 14 parts of stone flour, 2 parts of polyphenylene sulfide powder, 5 parts of cement, calcium oxide 5
Part, appropriate liquid nitrogen.
A kind of preparation method of stalk exterior wall thermal insulation brick, step are as follows：
S1, maize straw dried, rolled, be 1 according to solid-liquid ratio：8 add 10%NaOH solution, are standing and soak for 15h, drag for
Go out, wash to neutrality, dry, crush, obtain powder of straw；
S2, vermiculite is calcined 2h at 900 DEG C, then 1h soaked with 10% hydrochloric acid solution, then be washed with deionized to neutrality,
Drying, is immersed into liquid nitrogen, keeps 10min, is taken out, and must be loaded with the vermiculite of liquid nitrogen；
S3, the powder of straw by step S1, glass bead, flyash, magnesia, magnesium chloride, stone flour, polyphenylene sulfide powder,
Cement, calcium oxide mixing, add suitable quantity of water, stir 5min, obtain compound I；
S4, with passage the vermiculite that liquid nitrogen is loaded with step S2 is added to middle part inside compound I, quickly
5s is stirred, obtains compound II；
S5, compound II mated formation into mould, suppress 5min in 10Mpa, be pressed into idiosome, dry；
S6, dried idiosome is sent into anaerobic calcining kiln and calcined, produced.
Embodiment 3
A kind of stalk exterior wall thermal insulation brick, is made up of the raw material of following parts by weight：80 parts of straw, 8 parts of glass bead, vermiculite 3
Part, 10 parts of flyash, 40 parts of magnesia, 6 parts of magnesium chloride, 10 parts of stone flour, 3 parts of polyphenylene sulfide powder, 3 parts of cement, 6 parts of calcium oxide,
Appropriate liquid nitrogen.
A kind of preparation method of stalk exterior wall thermal insulation brick, step are as follows：
S1, straw dried, rolled, be 1 according to solid-liquid ratio：10 add 10%NaOH solution, are standing and soak for 18h, pull out,
Washing is dried to neutrality, crushes, obtain powder of straw；
S2, particle diameter is taken to be 0.2mm, hardness is 1.3 vermiculite, 2.5h is calcined at 950 DEG C, then soaked with 10% hydrochloric acid solution
1.5h, then be washed with deionized to neutrality, drying, it is immersed into liquid nitrogen, keeps 15min, is taken out, liquid nitrogen must be loaded with
Vermiculite；
S3, the powder of straw by step S1, glass bead, flyash, magnesia, magnesium chloride, stone flour, polyphenylene sulfide powder,
Cement, calcium oxide mixing, add suitable quantity of water, stir 8min, obtain compound I；
S4, with passage the vermiculite that liquid nitrogen is loaded with step S2 is added to middle part inside compound I, quickly
7s is stirred, obtains compound II；
S5, compound II mated formation into mould, suppress 3min in 15Mpa, be pressed into idiosome, dry；
S6, dried idiosome is sent into anaerobic calcining kiln and calcined, 2h is first calcined at 100 DEG C, then be warming up to 430 DEG C
Lower calcining 30min, then be cooled at 160 DEG C and calcine 2h, then be warming up at 380 DEG C and calcine 2h.
Embodiment 4
A kind of stalk exterior wall thermal insulation brick, is made up of the raw material of following parts by weight：85 parts of agricultural crop straw, 4 parts of glass bead,
6 parts of vermiculite, 6 parts of flyash, 42 parts of magnesia, 4 parts of magnesium chloride, 18 parts of stone flour, 1.5 parts of polyphenylene sulfide powder, 3.5 parts of cement, oxygen
Change 4 parts of calcium, appropriate liquid nitrogen.
A kind of preparation method of stalk exterior wall thermal insulation brick, step are as follows：
S1, agricultural crop straw dried, rolled, be 1 according to solid-liquid ratio：10 add 10%NaOH solution, are standing and soak for
16h, pull out, wash to neutrality, dry, crush, obtain powder of straw；
S2, particle diameter is taken to be 0.1mm, hardness is 1.4 vermiculite, 3h is calcined at 1000 DEG C, then soaked with 10% hydrochloric acid solution
1.5h, then be washed with deionized to neutrality, drying, it is immersed into liquid nitrogen, keeps 20min, is taken out, liquid nitrogen must be loaded with
Vermiculite；
S3, the powder of straw by step S1, glass bead, flyash, magnesia, magnesium chloride, stone flour, polyphenylene sulfide powder,
Cement, calcium oxide mixing, add suitable quantity of water, stir 10min, obtain compound I；
S4, with passage the vermiculite that liquid nitrogen is loaded with step S2 is added to middle part inside compound I, quickly
10s is stirred, obtains compound II；
S5, compound II mated formation into mould, suppress 2min in 20Mpa, be pressed into idiosome, dry；
S6, dried idiosome is sent into anaerobic calcining kiln and calcined, 3h is first calcined at 120 DEG C, then be warming up to 450 DEG C
Lower calcining 60min, then be cooled at 180 DEG C and calcine 3h, then be warming up at 400 DEG C and calcine 3h.
Embodiment 5
A kind of stalk exterior wall thermal insulation brick, is made up of the raw material of following parts by weight：100 parts of wheat stalk, 3 parts of glass bead,
8 parts of vermiculite, 5 parts of flyash, 50 parts of magnesia, 3 parts of magnesium chloride, 20 parts of stone flour, 1 part of polyphenylene sulfide powder, 6 parts of cement, calcium oxide 3
Part, appropriate liquid nitrogen.
A kind of preparation method of stalk exterior wall thermal insulation brick, step are as follows：
S1, wheat stalk dried, rolled, be 1 according to solid-liquid ratio：10 add 10%NaOH solution, are standing and soak for 20h,
Pull out, wash to neutrality, dry, crush, obtain powder of straw；
S2, vermiculite is calcined 2.5h at 900 DEG C, then 1h is soaked with 10% hydrochloric acid solution, then be washed with deionized into
Property, dry, be immersed into liquid nitrogen, keep 15min, take out, the vermiculite of liquid nitrogen must be loaded with；
S3, the powder of straw by step S1, glass bead, flyash, magnesia, magnesium chloride, stone flour, polyphenylene sulfide powder,
Cement, calcium oxide mixing, add suitable quantity of water, stir 10min, obtain compound I；
S4, with passage the vermiculite that liquid nitrogen is loaded with step S2 is added to middle part inside compound I, quickly
5s is stirred, obtains compound II；
S5, compound II mated formation into mould, suppress 5min in 16Mpa, be pressed into idiosome, dry；
S6, dried idiosome is sent into anaerobic calcining kiln and calcined, 2.5h is first calcined at 110 DEG C, then be warming up to 450
40min is calcined at DEG C, then is cooled at 180 DEG C and calcines 3h, then is warming up at 390 DEG C and calcines 2h.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (9)
1. a kind of stalk exterior wall thermal insulation brick, it is characterised in that be made up of the raw material of following parts by weight：Agricultural crop straw 80-100
Part, glass bead 3-8 parts, vermiculite 3-8 parts, flyash 5-10 parts, magnesia 40-50 parts, magnesium chloride 3-6 parts, stone flour 10-20
Part, polyphenylene sulfide powder 1-3 parts, cement 3-6 parts, calcium oxide 3-6 parts, appropriate liquid nitrogen.
2. stalk exterior wall thermal insulation brick as claimed in claim 1, it is characterised in that be made up of the raw material of following parts by weight：Farming
Thing stalk 90-100 parts, glass bead 5-7 parts, vermiculite 4-6 parts, flyash 6-8 parts, magnesia 43-47 parts, magnesium chloride 3-6 parts,
Stone flour 12-16 parts, polyphenylene sulfide powder 1-3 parts, cement 4-6 parts, calcium oxide 4-6 parts, appropriate liquid nitrogen.
3. stalk exterior wall thermal insulation brick as claimed in claim 1 or 2, it is characterised in that the agricultural crop straw be wheat stalk,
One kind in maize straw, straw.
4. stalk exterior wall thermal insulation brick as claimed in claim 1 or 2, it is characterised in that the particle diameter of the vermiculite is 0.1-
0.3mm, hardness 1.2-1.4.
5. the preparation method of a kind of stalk exterior wall thermal insulation brick as described in claim 1-4 is any, it is characterised in that step is such as
Under：
S1, agricultural crop straw dried, roll, be added in 10%NaOH solution and be standing and soak for 15-20h, pull out, wash into
Property, dry, crush, obtain powder of straw；
S2, by vermiculite calcination process, then with 10% hydrochloric acid solution 1-2h is soaked, then be washed with deionized to neutrality, dried, will
It is immersed into liquid nitrogen, keeps 10-20min, is taken out, and must be loaded with the vermiculite of liquid nitrogen；
S3, the powder of straw by step S1, glass bead, flyash, magnesia, magnesium chloride, stone flour, polyphenylene sulfide powder, cement,
Calcium oxide mixes, and adds suitable quantity of water, stirs 5-10min, obtains compound I；
S4, with passage the vermiculite that liquid nitrogen is loaded with step S2 is added to middle part inside compound I, quick stirring
5-10s, obtain compound II；
S5, compound II mated formation into mould, be pressed into idiosome, dried；
S6, dried idiosome is sent into anaerobic calcining kiln and calcined, produced.
6. the preparation method of stalk exterior wall thermal insulation brick as claimed in claim 5, it is characterised in that in the step S1 stalk and
The solid-liquid ratio of 10%NaOH solution is 1：5-10.
7. the preparation method of stalk exterior wall thermal insulation brick as claimed in claim 5, it is characterised in that vermiculite roasts in the step S2
It is 900-1000 DEG C to burn temperature, is calcined 2-3h.
8. the preparation method of stalk exterior wall thermal insulation brick as claimed in claim 5, it is characterised in that pressure is suppressed in the step S5
Power is 10-20Mpa, press time 2-5min.
9. the preparation method of stalk exterior wall thermal insulation brick as claimed in claim 5, it is characterised in that calcined in the step S6
Concretely comprise the following steps：2-3h is first calcined at 100-120 DEG C, then is warming up at 430-450 DEG C and calcines 30-60min, then is cooled to
2-3h is calcined at 160-180 DEG C, then is warming up at 380-400 DEG C and calcines 2-3h.
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| CN109160796A (en) * | 2018-11-10 | 2019-01-08 | 安徽展大生物科技有限公司 | A kind of preparation method of stalk brick |
| CN109734386A (en) * | 2018-12-27 | 2019-05-10 | 广州华隆建筑材料有限公司 | A kind of engineering brick of environment-friendly type and preparation method thereof |
| CN115893923A (en) * | 2022-09-15 | 2023-04-04 | 哈尔滨工业大学 | Straw building material brick and processing method thereof |
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| CN109160796A (en) * | 2018-11-10 | 2019-01-08 | 安徽展大生物科技有限公司 | A kind of preparation method of stalk brick |
| CN109734386A (en) * | 2018-12-27 | 2019-05-10 | 广州华隆建筑材料有限公司 | A kind of engineering brick of environment-friendly type and preparation method thereof |
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Application publication date: 20180112 |