CN106565167A - Polyurethane and foamed cement microscopically-composite heat insulating material and preparation method therefor - Google Patents
Polyurethane and foamed cement microscopically-composite heat insulating material and preparation method therefor Download PDFInfo
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- CN106565167A CN106565167A CN201610562337.0A CN201610562337A CN106565167A CN 106565167 A CN106565167 A CN 106565167A CN 201610562337 A CN201610562337 A CN 201610562337A CN 106565167 A CN106565167 A CN 106565167A
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- foamed 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
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/48—Macromolecular compounds
- C04B41/488—Other macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
- C04B41/4884—Polyurethanes; Polyisocyanates
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/62—Coating or impregnation with organic materials
- C04B41/63—Macromolecular compounds
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention provides a polyurethane and foamed cement microscopically-composite heat insulating material and a preparation method therefor and belongs to the field of organic/inorganic composite type building materials. The preparation method is characterized by comprising the steps: adding ingredients such as cement and a foam stabilizer according to the conventional method, preparing foamed cement through carrying out foaming with hydrogen peroxide, and then, carrying out room-temperature curing until the foamed cement reaches an age; and then, mixing isocyanate, polyether polyol, polysiloxane polyether and a catalyst so as to obtain uniform slurry, then, submerging the dried foamed cement in the slurry, taking out the foamed cement after the foamed cement is completely impregnated with the slurry, carrying out standing for 2 to 4 hours so as to cure the foamed cement, then, submerging the foamed cement in water again, and then, carrying out foaming in a manner that water molecules are in contact with incompletely-reacted isocyanate through diffusion and infiltration, thereby obtaining the microscopically-composite heat insulating material. According to the material, organic polyurethane foam and inorganic cement foam are mutually independent and coexist in an interpenetrating manner, and microscopic compounding among interfaces is achieved, so that the foamed cement has relatively high compressive strength and relatively low coefficient of thermal conductivity.
Description
Technical field
The present invention relates to a kind of polyurethane insulation material compound with foam cement microcosmic and preparation method thereof, belonging to has
Machine/inorganic composite type building material field.
Technical background
In recent years, the increasingly depleted with the energy and the continuous deterioration of environment, energy-saving and emission-reduction already become countries in the world
Widespread consensus.The successive promulgation of every Regulation of building energy-saving and execution so that the development of building thermal insulation material is just subject to application
The extensive concern of people.Foam cement as a kind of new froth inorganic stock, with heat-insulation and heat-preservation, fire-retardant fireproof, low price
The good characteristics such as environmental protection, preferably meet the requirement of energy-saving heat preserving engineering, but there is also in actual applications thermal conductivity factor and
The defect such as water absorption rate is higher, low intensity, fragility are big, constrains to a certain extent its development in all conglomeraties.
To improve the combination property of foam cement, expanded application field, modified method common at present mainly has two big class：
One is how by each fibers such as incorporation polypropylene fibre, polyethylene fibre, alkali-resistant glass fibre, and wood fibres and each
Plant polymer, dispersibility latex powder etc. to reduce fragility, improve intensity (document 1.Dawood E.T.et
al.Structural concrete.16,496,(2015)；2.Nambiar E.K.et al.Cem.Concr.Compos.28,
475,(2006)；3.Panesar D.K.et al.Constr.Build.Mater.44,575,(2013)；4.Akil H.et
al.Mater.Des.32,4107,(2011)；5.Arvind K.et al.Cement and Concrete Research.32,
1783,(2002)；6.Bala M.et al.Constr Build.Mater.25,7,(2010)；7. Chinese patent
CN102746019A；8. Chinese patent CN102424551A；9. Chinese patent CN102910934A), though this kind of approach can be significantly
Improve cracking resistance, anti-folding and the shrinkage performance of cement products, but have obvious delay to act on hydrated cementitious, hold very much in foaming process
The raising of cement early strength is easily hindered, and the mould that causes seriously to collapse (Wang Lu of document 10. is bright etc. functional material .46,84, (2015)；
11.Li zhulong.et al.J.Build.Mater.1,6,(1999)；12.Xiao Liguang.et al.J Jilin
Instit Archi Civil Eng.5,7,(2012)；13.Sang Guochen,et
al.Constr.Build.Mater.112,648,(2016)).Two is to be total to the organic foams such as polyurethane, polystyrene with physics
Mode that is mixed or filling is combined (document 14.K.Ganesh.Babu.et al.Cement and with cement mortar or foam cement
Concrete Research.33,755,(2003)；15. Ali A.Sayadi et al.Constr
Build.Mater.112,716,(2016)；16.J.Gade.et al.Cem.Concr.Compos.32,672,(2010)；
17.P.Mounanga.et al.Cem.Concr.Compos.30,806,(2008)；18. Chinese patent CN101918336A),
This method can improve thermal and insulating performance, but organic foam and cement mortar or foaming water while product unit weight is effectively reduced
The compound of microcosmic point is extremely difficult between mud, there is incompatibility between interface, it is difficult to form the system that organic/inorganic is closely connected
One is overall.
The content of the invention
The quality problems such as fragility big, low intensity, the unit weight height existed for traditional foam cement of the invention and routine are modified
One of the deficiency that means cannot overcome, purpose are to provide the insulation material that a kind of polyurethane is combined with foam cement microcosmic, should
In material polyurethane foam and cement bubble it is mutually interspersed and and deposit, foam structure is stable, enhancing effect protrusion.
It is to provide a kind of gentle reaction condition, the polyurethane of simple operation and send out that second object of the present invention is
The preparation method of the compound insulation material of soaked mud microcosmic.
The insulation material that a kind of polyurethane that the present invention is provided is combined with foam cement microcosmic, includes：Cement 80-100
Part, flyash 0-20 parts, hydrogen peroxide 2-6 parts, PP chopped strand 0.2-1.0 parts, foam stabilizer 0.3-2.0 parts, calcium formate 1-2 parts,
Water 45-55 parts, isocyanates 5-25 parts, PPG 5-15 parts, silicone polyether 0.1-0.4 parts, catalyst 0.005-
0.3 part.
The foam stabilizer is hydrophilic anions type surfactant, can be lauryl sodium sulfate, dodecyl sulphur
One or more in sour sodium, neopelex, α-sodium olefin sulfonate.
The isocyanates has no special requirements, and can be toluene di-isocyanate(TDI), more methyl diphenylene diisocyanate, Asia
One or more in many phenyl diisocyanates of methyl.
The catalyst has no special requirements, can be stannous iso caprylate, tin dilaurate diisobutyl tin, triethylene diamine,
One or more in double (dimethylaminoethyl) ethers.
The preparation method of the insulation material that a kind of polyurethane that the present invention is provided is combined with foam cement microcosmic, its technique letter
It is single easy, it is particularly suitable for industrialized production and application, specifically include following steps：
(1), the components such as cement, flyash, PP chopped strands, foam stabilizer are added according to a conventional method, with dioxygen Water blown system
For into after foam cement, room temperature was conserved to age；
(2), isocyanates, PPG, silicone polyether, catalyst are mixed into into homogeneous slurry, then will step
Suddenly (1) prepare and dried foam cement be immersed in the slurry, after slurry is impregnated with foam cement completely take out, stand
2-4hr solidifies it；
(3), the foam cement that step (2) is obtained is immersed in water, as the diffusion of hydrone is penetrated into, is touched
Completely isocyanates is expandable to unreacted, obtains the compound insulation material of microcosmic.
In the insulation material that a kind of polyurethane that the present invention is provided is combined with foam cement microcosmic, organic polyurethane foam
With inorganic cement bubble not only it is separate but also it is interspersed coexist, microcosmic is realized between interface and is combined so that foam cement Absolute Dry Density is
200-350Kg/m3, compression strength reaches 1.0-1.7MPa, thermal conductivity factor as little as 0.041-0.048W/ (m.k).
Hinge structure, the beneficial effects of the present invention is：
1st, secondary foaming process is adopted, obtains the insulation material that a kind of polyurethane is combined with foam cement microcosmic, the material
Organic layer and inorganic layer can reach the compound of micro-level in material, polyurethane foam and cement steep not only it is separate but also it is interspersed simultaneously
Deposit, compound interface is stable, weatherability is high.
2nd, it is of the invention during foam cement is prepared, using hydrophilic anions type surfactant as foam stabilizing
Agent, increased the compatibility to isocyanates, PPG and hydrone, be more beneficial for isocyanates, PPG and
The infiltration and diffusion of hydrone.
3rd, the insulation material that the polyurethane and foam cement microcosmic that the present invention is provided is combined, the quantity of its polyurethane foam and hole
The big I in footpath by isocyanates, PPG and water amount precise control, thus unit weight, intensity, the heat conduction system of insulation material
The main performances such as number can arbitrarily regulate and control within the specific limits.
In the preparation method of the insulation material that the polyurethane and foam cement microcosmic that the 4, the present invention is provided is combined, technique
Flow process is simple, and operability is high, and polyurethane each component is impregnated to be penetrated into after foam cement, then Jing is full water foamed obtains final product, complete
The full needs for adapting to large-scale industrial production.
5th, beneficial effects of the present invention are also resided in, and the compound insulation material of microcosmic is relative to traditional foam cement combination property
Significantly improve.Absolute Dry Density is 200-350Kg/m3When, compression strength reaches 1.0-1.7MPa, thermal conductivity factor as little as 0.041-
0.048W/ (m.k), efficiently solves many deficiencies that traditional foam cement is present.
Based on these characteristics, such material administered in building inside and outside wall thermal insulation and decoration, roof insulation and environmental noise,
The numerous areas such as building damping have broad application prospects.
Description of the drawings
Fig. 1 is organic polyurethane foam of insulation material and inorganic cement bubble hole appearance structure in embodiment 1.
Fig. 2 is the stress/strain curves of insulation material in embodiment 1, and a represents that the routine for being not added with polyurethane component is sent out
Bubble cement sample, b represents polyurethane and foam cement microcosmic composite sample.
Fig. 3 is the buckle resistance energy schematic diagram of insulation material in embodiment 1.
Specific embodiment
It is further explained explanation to the present invention with reference to embodiments, but protection scope of the present invention is not limited to following realities
Apply example.Equivalent structure or equivalent flow conversion that every utilization description of the invention and accompanying drawing content are made, or directly or indirectly
Be used in other correlative technology fields, all should be included in the same manner the present invention scope of patent protection within.
Embodiment 1
(1), according to a conventional method by 100 parts of P.O.42.5 cement, 0.5 part of PP chopped strand, 2 parts of calcium formates, 1.5 part 12
After sodium alkyl benzene sulfonate foam stabilizer is with 50 parts 45 DEG C of hot water stirs 3min, 5 parts of hydrogen peroxide, and while high-speed stirred are rapidly added
Pour mould after 10s into, stand the 24hr demouldings, 48hr cuts, then room temperature is conserved to age and is dried to constant weight.
(2), 13 parts of thick methyl diphenylene diisocyanates, 10 parts of PPGs, 0.2 part of polysiloxanes are gathered first
Ether, 0.01 part of tin dilaurate diisobutyl tin catalyst are mixed into homogeneous slurry, are then dried foaming water by prepared by step (1)
Mud is immersed in the slurry, is taken out after slurry is impregnated with foam cement completely, and standing 2hr solidifies it；
(3), the foam cement obtained by step (2) is immersed in water, as the diffusion of hydrone is penetrated into, contact
To unreacted, completely isocyanates is expandable, obtains polyurethane foam and steeps the compound insulation material of microcosmic with cement.
After testing, the compound insulation material Absolute Dry Density 280Kg/m of the microcosmic3, compression strength 1.5MPa, thermal conductivity factor
0.045W/(m.k)。
Embodiment 2
(1), according to a conventional method by 85 parts of P.O.42.5 cement, 15 parts of I grade of flyash, 1.0 parts of PP chopped strands, 1.5 parts
After calcium formate, 2.0 portions of lauryl sodium sulfate foam stabilizers are with 55 parts 47 DEG C of hot water stirs 2min, 5.3 parts of dioxygens are rapidly added
Water, and while pour mould after high-speed stirred 10s into, the standing 24hr demouldings, 48hr cuts, then room temperature is conserved to age and is dried
To constant weight.
(2), first by 20 parts of polymethylene polyphenyl diisocyanate, 15 parts of PPGs, 0.4 part of polysiloxanes
Polyethers, 0.1 part of triethylene diamine catalyst are mixed into homogeneous slurry, are then dried foam cement submergence by prepared by step (1)
In the slurry, take out after slurry is impregnated with foam cement completely, standing 3hr solidifies it；
(3), the foam cement obtained by step (2) is immersed in water, as the diffusion of hydrone is penetrated into, contact
To unreacted, completely isocyanates is expandable, obtains polyurethane foam and steeps the compound insulation material of microcosmic with cement.
After testing, the compound insulation material Absolute Dry Density 215Kg/m of the microcosmic3, compression strength 1.05MPa, thermal conductivity factor
0.042W/(m.k)。
Embodiment 3
(1), according to a conventional method by 90 parts of P.C.32.5 cement, 10 parts of II grade of flyash, 0.7 part of PP chopped strand, 1.0 parts
After calcium formate, 2.0 portions of α-sodium olefin sulfonate foam stabilizers are with 47 parts 40 DEG C of hot water stirs 2min, 4.5 parts of hydrogen peroxide are rapidly added,
And while pour mould after high-speed stirred 10s into, the standing 24hr demouldings, 48hr cuts, then room temperature is conserved to age and is dried extremely
Constant weight.
(2), first by 10 parts of toluene di-isocyanate(TDI)s, 9 parts of PPGs, 0.15 part of silicone polyether, 0.2 part it is double
(dimethylaminoethyl) ether catalyst is mixed into homogeneous slurry, then the foam cement that is dried prepared by step (1) is immersed in into this
In slurry, take out after slurry is impregnated with foam cement completely, standing 4hr solidifies it；
(3), the foam cement obtained by step (2) is immersed in water, as the diffusion of hydrone is penetrated into, contact
To unreacted, completely isocyanates is expandable, obtains polyurethane foam and steeps the compound insulation material of microcosmic with cement.
After testing, the compound insulation material Absolute Dry Density 328Kg/m of the microcosmic3, compression strength 1.7MPa, thermal conductivity factor
0.048W/(m.k)。
Claims (4)
1. the insulation material that a kind of polyurethane is combined with foam cement microcosmic, it is characterised in that specifically include：Cement 80-100
Part, flyash 0-20 parts, hydrogen peroxide 2-6 parts, PP chopped strand 0.2-1.0 parts, foam stabilizer 0.3-2.0 parts, calcium formate 1-2 parts,
Water 45-55 parts, isocyanates 5-25 parts, PPG 5-15 parts, silicone polyether 0.1-0.4 parts, catalyst 0.005-
0.3 part.
2. the insulation material that a kind of polyurethane as claimed in claim 1 is combined with foam cement microcosmic, it is characterised in that described
Foam stabilizer is hydrophilic anions type surfactant.
3. the preparation method of the insulation material that a kind of polyurethane and foam cement microcosmic are combined, it is characterised in that including following step
Suddenly：
(1), the components such as cement, flyash, PP chopped strands, foam stabilizer are added according to a conventional method, be prepared into dioxygen Water blown
After foam cement, room temperature was conserved to age；
(2), isocyanates, PPG, silicone polyether, catalyst are mixed into into homogeneous slurry, then by step (1)
Prepare and dried foam cement is immersed in the slurry, take out after slurry is impregnated with foam cement completely, standing 2-4hr makes
Its solidification；
(3), the foam cement that step (2) is obtained is immersed in water, as the diffusion of hydrone is penetrated into, is touched not anti-
Should isocyanates be completely expandable, obtain polyurethane foam and steep the compound insulation material of microcosmic with cement.
4. the insulation material that a kind of polyurethane as claimed in claim 1 is combined with foam cement microcosmic, it is characterised in that described
Organic polyurethane foam and inorganic cement steep not only it is separate but also it is interspersed coexist, microcosmic is realized between interface and is combined so that foaming water
Mud Absolute Dry Density is 200-350Kg/m3, compression strength reaches 1.0-1.7MPa, thermal conductivity factor as little as 0.041-0.048W/
(m.k)。
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| CN201610562337.0A CN106565167B (en) | 2016-07-15 | 2016-07-15 | A kind of polyurethane and the microcosmic compound thermal insulation material and preparation method thereof of foamed cement |
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| CN106565167B CN106565167B (en) | 2019-03-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110759683A (en) * | 2019-11-29 | 2020-02-07 | 江苏省苏安能节能建材科技有限公司 | Foamed cement board and preparation method thereof |
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| CN102701687A (en) * | 2012-06-29 | 2012-10-03 | 安徽省思维新型建材有限公司 | Insulated fireproof material of polyurethane cement foam and preparation method of insulated fireproof material |
| CN103193419A (en) * | 2011-08-01 | 2013-07-10 | 赵绍鉴 | Novel multifunctional foamed cement board |
| CN104478359A (en) * | 2014-12-13 | 2015-04-01 | 广西科技大学 | Process for preparing composite foamed cement board |
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2016
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| CN103193419A (en) * | 2011-08-01 | 2013-07-10 | 赵绍鉴 | Novel multifunctional foamed cement board |
| CN102701687A (en) * | 2012-06-29 | 2012-10-03 | 安徽省思维新型建材有限公司 | Insulated fireproof material of polyurethane cement foam and preparation method of insulated fireproof material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110759683A (en) * | 2019-11-29 | 2020-02-07 | 江苏省苏安能节能建材科技有限公司 | Foamed cement board and preparation method thereof |
| CN110759683B (en) * | 2019-11-29 | 2021-12-17 | 江苏省苏安能节能建材科技有限公司 | Foamed cement board and preparation method thereof |
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| CN106565167B (en) | 2019-03-26 |
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