CN103922789B - Inorganic foaming thermal-insulation mortar and preparation method thereof - Google Patents

Inorganic foaming thermal-insulation mortar and preparation method thereof Download PDF

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Publication number
CN103922789B
CN103922789B CN201410104347.0A CN201410104347A CN103922789B CN 103922789 B CN103922789 B CN 103922789B CN 201410104347 A CN201410104347 A CN 201410104347A CN 103922789 B CN103922789 B CN 103922789B
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gelling
insulation mortar
foaming agent
expanded perlite
chemical foaming
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CN201410104347.0A
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CN103922789A (en
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樊传刚
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马鞍山实达建材科技有限公司
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Abstract

The present invention provides an inorganic foaming thermal-insulation mortar and a preparation method thereof, and belongs to the technical field of building material preparation. The thermal-insulation mortar comprises a cementing material, expanded perlite particles, a macromolecule polymer, a coagulant, an early strength agent, a physical foaming agent, a chemical foaming agent hydrogen peroxide, a chemical foaming agent foaming catalyst, a hydrophobic agent, reinforced short fibers and water. According to the present invention, the inorganic foaming thermal-insulation mortar can be directly coated on the wall and the roof requiring the thermal-insulation treatment, the thickness of the inorganic thermal-insulation mortar layer can be adjusted within 10-100 mm, screeding finishing construction is performed before the cementing material is subjected to final setting, and hardening is performed to obtain the inorganic thermal-insulation mortar layer with characteristics of good durability, good water resistance and good heat insulation, wherein the inorganic thermal-insulation mortar layer never sheds, and has the same service life as the building being subjected to thermal-insulation by the inorganic thermal-insulation mortar layer; and the raw material cost is low, and significant economic benefits and environmental benefits are provided.

Description

A kind of inorganic foamed thermal insulation mortar and preparation method thereof
Technical field
the invention belongs to material of construction preparing technical field, be specifically related to a kind of inorganic foamed thermal insulation mortar that can directly smear at exterior wall and roof and preparation method thereof.
Background technology
how energy-conservation and reduce the key that energy consumption becomes current solution energy problem efficiently along with the oil that the earth can be utilized, coal resources are day by day exhausted, and human development goes out the new forms of energy that fundamentally can solve energy dilemma and needs time, so.Current China building energy consumption has accounted for 46.7% of whole society's total energy consumption, and unit building energy consumption is 2 of developed country~ 3 times, cause heavy energy burden and serious environmental pollution to society, reducing building energy consumption has been very urgent.External wall outer insulation method adopts lightweight thermal insulation layer to stick the method for (paste and hang) exterior wall surface, the target of building energy conservation can be realized, but adopted organic foam to be eliminated because there is disaster hidden-trouble as the mode of insulation main body in the past, inorganic external wall outer insulation material is because fire-fighting grade is high, and the former substitute is elected to be by people, wherein inorganic heat insulation mortar is exactly a kind of external wall outer insulation material be commonly used at present.Be exactly solve lighten mechanical property simultaneously and endurance quality of material how to improve problem in key problem ordinary mortar being developed into light inorganic heat preserving mortar.Because the essence of mortar be exactly a kind of containing fine aggregate, not containing the concrete material of coarse aggregate, therefore mortar lightens the method that normal concrete sill can be adopted to lighten.One of approach that current normal concrete sill lightens uses light skeletal to replace general aggregate; Two of approach uses the bonded section of the method for physics or chemical foaming in concrete structure to introduce sealed porosity.Aforesaid method makes material also weaken in the mechanical property simultaneously that lightens thereupon.Therefore how solving above-mentioned contradictory problems is that pendulum is rich in challenge in face of investigation of materials person.The concept of in-situ chemical foaming is proposed in Chinese patent CN201310233030.2 " a kind of foamed concrete and preparation method thereof ", the foaming haydite light concrete that strength grade is higher can be obtained, but only lean on chemical foaming and adopt haydite to be that light coarse aggregate cannot obtain unit weight lower than 500kg/m 3 light weight concrete sill.In addition; glass bead is have employed as thin light skeletal in current inorganic heat insulation mortar; cement is as gelling material; for reducing the unit weight of inorganic heat insulation mortar; adopt and reduce cement consumption and adopt high molecular polymer as supplementary cementitious material in a large number, although the inorganic heat insulation mortar unit weight obtained can reach 400 kg/m 3 below; and have ideal heat insulation effect, but because adopt a large amount of high molecular polymers to be supplementary cementitious material, closed-cell expanded glass bead is light fine aggregate; the cost of thermal insulation mortar is remained high, also cause in addition the weathering resistance of thermal insulation mortar and weather resistance undesirable.
Summary of the invention
the present invention is directed to Problems existing in existing thermal insulation mortar technology of preparing, a kind of inorganic foamed thermal insulation mortar and preparation method thereof is provided.
a kind of inorganic foamed thermal insulation mortar provided by the present invention is made up of the kicker of gelling material, expanded perlite granule, high molecular polymer, setting accelerator, hardening accelerator, pneumatogen, chemical foaming agent hydrogen peroxide, chemical foaming agent, hydrophober, enhancing staple fibre and water.
the mass ratio of described gelling material and described expanded perlite granule is (1~ 3): 1; Described high molecular polymer accounts for 0.1% of described gelling material quality~ 2.5%; Described setting accelerator accounts for 0.5% of described gelling material quality~ 2%; Described hardening accelerator accounts for 0.5% of described gelling material quality~ 2%; Described pneumatogen accounts for 0.01% of described gelling material quality~ 0.1%; Described chemical foaming agent hydrogen peroxide accounts for 2% of described gelling material quality~ 5%; The kicker of described chemical foaming agent accounts for 0.05% of described gelling material quality~ 0.2%; Described hydrophober accounts for 0.5% of described gelling material quality~ 2%; Described enhancing staple fibre accounts for 0.1% of described gelling material quality~ 0.5%, in described inorganic heat insulation mortar, water and gelling material mass ratio are 0.45~ 0.8.
described gelling material is by general-purpose cement and activate micro powder: any one or wantonly more than two kinds in flyash, slag micropowder, silicon powder, higher ridge powder, light-burned clay powder, light-burned colliery powder, dry hydrate, slag micro powder are composited, wherein general-purpose cement content accounts for 20% ~ 95% of gelling material quality, activate micro powder accounts for 5% ~ 80% of gelling material quality, and the specific surface area of activate micro powder is greater than 400m 2 / kg.In described gelling material, the label of general-purpose cement is more than 42.5, and wherein preferential employing is early-strength type ordinary Portland cement or early-strength type silicate cement
the size range of described expanded perlite granule is 0.1 ~ 2.5 millimeter, piles up unit weight 100 ~ 250kg/m 3 , water-intake rate is greater than 100%.
described high molecular polymer is re-dispersible glue powder, any one or wantonly more than two kinds in methylcellulose gum (CMC), carboxylic propyl methocel (HPMC), polyoxyethylene glycol (PEG) are formed with arbitrary proportion compound.
to be that any one or any two in sodium metaaluminate, Starso, Sodium Silicofluoride, potassium silicofluoride, high-alumina cement, aluminosulfate cement are above formed with arbitrary proportion described setting accelerator.
described hardening accelerator is calcium sulfate, any one or any two in alum, Sodium sulfate anhydrous.min(99), calcium chloride, calcium formiate, Sodium Nitrite, trolamine (TEA) are above is formed with arbitrary proportion.
described pneumatogen is any one in saponin(e powder, sodium lauryl sulphate, Sodium dodecylbenzene sulfonate, sodium laurylsulfonate.
the mass concentration of described chemical foaming agent hydrogen peroxide is 27.5wt% ~ 50wt%, is preferably 27.5wt%.
the kicker of described chemical foaming agent is any one in ferric sulfate, ferrous sulfate, iron(ic) chloride, iron protochloride, potassium permanganate.
described hydrophober is calcium stearate or organic-silicon-modified clay.
described enhancing staple fibre is any one in lignin fibre, polyphenyl alkene fiber, PVA fiber, flax silk, monofilament, and the length strengthening staple fibre is 5 ~ 15 millimeters.
preparation method's concrete steps of a kind of inorganic foamed thermal insulation mortar provided by the present invention are as follows:
(1) first the trace ingredients in batching is added in the activate micro powder of described gelling material according to ratio in batching, first carry out the pre-stirring of 3 ~ 10 minutes, stirred the mixture in advance, described trace ingredients comprises: the kicker of setting accelerator, hardening accelerator, high molecular polymerization powder, enhancing staple fibre, hydrophober, chemical foaming agent.
(2) fully mix in the general-purpose cement that stirring the mixture in advance of step (1) being obtained adds the described gelling material taken by proportioning, mixing time is 2 ~ 10 minutes.
(3) described expanded perlite granule is taken by proportioning, and taken expanded perlite granule is divided into two portions, first the expanded perlite granule of 20wt% ~ 80wt% is joined in the mixture that step (2) obtains and continue mixing, this demi-inflation perlite particle is base material expanded perlite granule, mixing time is 3 ~ 5 minutes, obtain the dry-mixed mortar before foaming, described dry-mixed mortar adds required water by proportioning at the construction field (site), and stir, churning time 2 ~ 5 minutes, makes the light mortar that can flow.
(4) described chemical foaming agent hydrogen peroxide is taken by proportioning, and chemical foaming agent hydrogen peroxide is joined in step (3) remaining expanded perlite granule, described remaining expanded perlite granule is carrier expanded perlite granule, after the described remaining expanded perlite granule of the saturated suction of described chemical foaming agent hydrogen peroxide, the remaining expanded perlite granule of described saturated suction chemical foaming agent hydrogen peroxide is admixed in the light mortar that can flow that step (3) obtains and carry out foam in place, stir after 1 ~ 2 minute, obtain target product: inorganic foamed thermal insulation mortar.
this inorganic foamed thermal insulation mortar directly can smear construction on the body of wall needing isothermal holding and roof, inorganic heat insulation mortar layer thickness is adjustable in 10 ~ 100 millimeters, and carry out striking off troweling construction before gelling material final set, then be hardened to weather resistance, water-repellancy, well-insulated inorganic heat insulation mortar layer, this inorganic heat insulation mortar layer never drop-off has the consistent life-span with institute heat-preserving building.
the present invention has following technical superiority:
(1) inorganic foamed thermal insulation mortar of the present invention has lighter weight in wet base and unit dry weight, after construction is smeared at scene, cohesiveness is strong, smear within 100mm thickness after putting on a suit of armour and can not come off, condensation and setting rate fast, can harden in 8h winter and obtain the ultimate compression strength of more than 0.5MPa, can obtain the ultimate compression strength of more than 0.8MPa after 28 days, and avidity between body of wall is strong, long-term mechanical property and heat-proof quality can not be changed in quality.
(2) inorganic foamed thermal insulation mortar of the present invention have employed the foaming method that in-situ chemical foams and physical blowing combines, be more suitable for preparing ultralight high-strength inorganic insulation construction than independent chemical foaming and physical blowing process, after being more suitable for on-the-spot directly foaming, smear construction.
(3) inorganic foamed thermal insulation mortar of the present invention have employed the way of chemical foaming and physical blowing combination, therefore compared with common inorganic thermal insulation mortar, low cost inorganic coagulation material amount used in mortar ingredient increases considerably, the high molecular polymer amount of high cost used significantly reduces, and therefore significantly reduces than the raw materials cost of common inorganic thermal insulation mortar.
(4) inorganic foamed thermal insulation mortar of the present invention have employed way that chemical foaming and physical blowing combine and carries out foaming to its bonded section and make it lighten, therefore the dependency of aggregate unit weight is reduced, adopt the expanded perlite granule piling up unit weight larger to be that aggregate can obtain weight in wet base 500kg/m 3 following wet mortar; smear rear indeformable, the not slump of construction; hardening strength after 8h can reach 0.5MPa; longterm strength is constant; and current common inorganic thermal insulation mortar only and can use a large amount of high molecular polymer gelling material could reach service requirements reluctantly by means of the closed pore glass bead selecting unit weight lighter; because of inorganic coagulation material quantity not sufficient in its batching and high molecular polymer excessive, cause the intensity after the undesirable and life-time service of the weathering resistance of common inorganic thermal insulation mortar significantly to decline.
(5) active mineral micro mist is employed in a large number in inorganic foamed thermal insulation mortar of the present invention, therefore the calcium hydroxide generation pozzolanic reaction that the active silica in later stage mortar composition and aluminum oxide can discharge with hydrated cementitious, make the later strength of light thermal-insulation structure more and more higher, and current inorganic heat insulation mortar is not enough because of gelling material usage quantity, the later strength of insulation construction is made to be difficult to improve.
(6) have employed hydrophober technology in inorganic foamed thermal insulation mortar of the present invention, its performance after the life-time service of freezing and defrosting area is not declined, and existing inorganic heat insulation mortar adopts re-dispersible glue powder to carry out waterproof, cannot block a small amount of pore water to enter, therefore after the life-time service of freezing and defrosting area, heat-insulating property and mechanical property can decline.
(7) in inorganic foamed thermal insulation mortar preparation method of the present invention, in-situ chemical foaming have employed the foam in place process that catalyzer controls, therefore than propose in Chinese patent CN201310233030.2 by gather materials and temperature head between grout is convenient to the foam in place controlling foaming process, reliable and cost is low.
Embodiment
embodiment 1: a kind of inorganic foamed thermal insulation mortar, it consists of: gelling material; Expanded perlite granule; High molecular polymer; Setting accelerator; Hardening accelerator; Pneumatogen; Chemical foaming agent hydrogen peroxide; The kicker of chemical foaming agent; Hydrophober; Strengthen staple fibre and water formation.
a kind of inorganic foamed thermal insulation mortar, the gelling material in its composition and the mass ratio of expanded perlite granule are 1:1, and high molecular polymer accounts for 0.1% of gelling material quality; Setting accelerator accounts for 0.5% of gelling material quality; Hardening accelerator accounts for 0.5% of gelling material quality; Pneumatogen accounts for 0.01% of gelling material quality; Chemical foaming agent accounts for 5% of gelling material quality; The kicker of chemical foaming agent accounts for 0.05% of gelling material quality; Hydrophober accounts for 2% of gelling material quality; Strengthen staple fibre and account for 0.1% of gelling material quality, the water of mixing mortar and gelling material mass ratio are 0.45.
a kind of inorganic foamed thermal insulation mortar, its gelling material is composited by No. 52.5 early-strength type silicate cements and flyash, dry hydrate, wherein cement content accounts for 40% of gelling material quality, and the 60%(that activate micro powder accounts for gelling material quality is wherein in activate micro powder: flyash accounts for 50% of gelling material quality; Dry hydrate accounts for 10% of gelling material quality), the specific surface area 450m of activate micro powder 2 / kg.
a kind of inorganic foamed thermal insulation mortar, the size range of expanded perlite granule used is 0.1 ~ 2.5 millimeter, high molecular polymer used is HPMC, setting accelerator used is sodium metaaluminate, hardening accelerator used is calcium sulfate, pneumatogen used is sodium lauryl sulphate, chemical foaming agent used is the hydrogen peroxide of mass concentration 27.5%, the kicker of chemical foaming agent used is potassium permanganate, hydrophober used is calcium stearate, enhancing staple fibre used is lignin fibre, and the length of staple fibre is 5 ~ 8 millimeters.
preparation method's concrete steps of a kind of inorganic foamed thermal insulation mortar provided by the present invention are as follows:
(1) first the trace ingredients in batching is added in the activate micro powder of gelling material first stirred in advance according to ratio in batching, trace ingredients comprises: setting accelerator; Pneumatogen; Hardening accelerator; High molecular polymerization powder; Staple fibre; Hydrophober; The kicker of chemical foaming agent, churning time is 5 minutes.
(2) then said mixture adds in the general-purpose cement of the gelling material taken by proportioning and fully mixes, and mixing time is 3 minutes.
(3) expanded perlite granule is taken by proportioning, and taken expanded perlite granule is divided into two portions, a part accounts for 80%, another part accounts for 20%, first the base material expanded perlite granule of 80% is added in after in the mixture obtained in step (2) and continues mixing, mixing time is 3 minutes, obtain the dry-mixed mortar before foaming, this dry-mixed mortar adds required water by the water needed in proportioning and gelling material mass ratio at the construction field (site), and stir, churning time 2 minutes, makes mobility light mortar.
(4) then the chemical foaming agent hydrogen peroxide needed for proportioning is admixed in the carrier expanded perlite granule of residue 20%, after hydrogen peroxide saturated suction carrier expanded perlite granule, admixed in the light mortar of the good fluidity that step (3) obtains and carried out foam in place, stir after 1 minute, obtain a kind of inorganic foamed thermal insulation mortar directly smearing construction at exterior wall, directly can smear construction on the body of wall needing isothermal holding, the thickness of inorganic heat insulation mortar layer 40 millimeters, carry out striking off troweling construction before gelling material final set, then weather resistance is become after sclerosis 10h, water-repellancy, well-insulated inorganic heat insulation mortar layer, the 28d ultimate compression strength 1.0MPa of screed, unit dry weight is 300kg/m 3 , over dry thermal conductivity is 0.08W/ (m.K), and institute's heat-preserving wall can be made to reach the requirement of building energy conservation 65%, and this inorganic heat insulation mortar layer never drop-off has the consistent life-span with institute heat-preserving building.
below in specific embodiment 2 ~ 8 for obtaining the concrete raw material that inorganic foamed thermal insulation mortar of the present invention adopts.
expanded perlite granule (A): A1, admixes the expanded perlite granule (base material pearlstone) of base material; A2, as the expanded perlite granule (carrier expanded perlite granule) of chemical foaming agent hydrogen peroxide carrier.
activate micro powder (B): B1, slag micropowder; B2, flyash; B3, silicon powder; B4, higher ridge powder; B5, light-burned clay powder; B6, light-burned colliery powder; B7, dry hydrate; B8, slag micro powder.
high molecular polymer (C): C1, re-dispersible glue powder; C2, CMC; C3, HPMC; C4, PVA; C5, PEG.
setting accelerator (D): D1, sodium metaaluminate; D2, Starso; D3, Sodium Silicofluoride; D4, potassium silicofluoride; D5, high-alumina cement; D6, aluminosulfate cement.
hardening accelerator (E): E1, calcium sulfate; E2, alum; E3, Sodium sulfate anhydrous.min(99); E4, calcium chloride; E5, calcium formiate; E6, Sodium Nitrite; E7, trolamine (TEA).
pneumatogen (F): F1, saponin(e powder; F2, sodium lauryl sulphate; F3, Sodium dodecylbenzene sulfonate; F4, sodium laurylsulfonate.
the kicker (G) of chemical foaming agent: G1, ferric sulfate; G2, ferrous sulfate; G3, iron(ic) chloride; G4, iron protochloride; G5, potassium permanganate.
hydrophober (H): H1, calcium stearate; H2, organic-silicon-modified clay.
staple fibre (J): J1, lignin fibre; J2, polyphenyl alkene fiber; J3, PVA fiber; J4, flax silk; J5, monofilament.
table 1 is depicted as the material fiting ratio in embodiment 2 ~ 8.
table 2 is depicted as the concrete raw material composition in embodiment 2 ~ 8.
a kind of inorganic foamed thermal insulation mortar directly smearing construction at exterior wall is obtained in specific embodiment 2, directly can smear construction on the roof needing isothermal holding, inorganic foamed thermal insulation mortar layer thickness is at 40 millimeters, carry out striking off troweling construction before gelling material final set, then weather resistance, water-repellancy, well-insulated inorganic heat insulation mortar layer is become after sclerosis 10h, the 28d ultimate compression strength 3.0MPa of screed, unit dry weight is 400kg/m 3 , over dry thermal conductivity is 0.09W/ (m.K), and institute's heat-preserving wall can be made to reach the requirement of building energy conservation 65%.
a kind of inorganic foamed thermal insulation mortar directly smearing construction at exterior wall is obtained in specific embodiment 3, directly can smear construction on the body of wall needing isothermal holding, inorganic foamed thermal insulation mortar layer thickness is at 40 millimeters, carry out striking off troweling construction before gelling material final set, then weather resistance, water-repellancy, well-insulated inorganic heat insulation mortar layer is become after sclerosis 10h, the 28d ultimate compression strength 2.8MPa of screed, unit dry weight is 350kg/m 3 , over dry thermal conductivity is 0.08W/ (m.K), and institute's heat-preserving wall can be made to reach the requirement of building energy conservation 65%.
a kind of inorganic foamed thermal insulation mortar directly smearing construction at exterior wall is obtained in specific embodiment 4, directly can smear construction on the body of wall needing isothermal holding, inorganic foamed thermal insulation mortar layer thickness is at 40 millimeters, carry out striking off troweling construction before gelling material final set, then weather resistance, water-repellancy, well-insulated inorganic heat insulation mortar layer is become after sclerosis 10h, 28d ultimate compression strength 1.5 MPa of screed, unit dry weight is 320kg/m 3 , over dry thermal conductivity is 0.075W/ (m.K), and institute's heat-preserving wall can be made to reach the requirement of building energy conservation 65%.
a kind of inorganic foamed thermal insulation mortar directly smearing construction at exterior wall is obtained in specific embodiment 5, directly can smear construction on the body of wall needing isothermal holding, inorganic foamed thermal insulation mortar layer thickness is at 40 millimeters, carry out striking off troweling construction before gelling material final set, then weather resistance, water-repellancy, well-insulated inorganic heat insulation mortar layer is become after sclerosis 10h, 28d ultimate compression strength 1.0 MPa of screed, unit dry weight is 300kg/m 3 , over dry thermal conductivity is 0.07W/ (m.K), and institute's heat-preserving wall can be made to reach the requirement of building energy conservation 70%.
a kind of inorganic foamed thermal insulation mortar directly smearing construction at exterior wall is obtained in specific embodiment 6, directly can smear construction on the body of wall needing isothermal holding, inorganic foamed thermal insulation mortar layer thickness is at 40 millimeters, carry out striking off troweling construction before gelling material final set, then weather resistance, water-repellancy, well-insulated inorganic heat insulation mortar layer is become after sclerosis 10h, 28d ultimate compression strength 1.0 MPa of screed, unit dry weight is 250kg/m 3 , over dry thermal conductivity is 0.065W/ (m.K), and institute's heat-preserving wall can be made to reach
to the requirement of building energy conservation 70%.
material fiting ratio in table 1 embodiment 2 ~ 8
concrete raw material composition in table 2 embodiment 2 ~ 8
a kind of inorganic foamed thermal insulation mortar directly smearing construction at exterior wall is obtained in specific embodiment 7, directly can smear construction on the body of wall needing isothermal holding, inorganic foamed thermal insulation mortar layer thickness is at 40 millimeters, carry out striking off troweling construction before gelling material final set, then weather resistance, water-repellancy, well-insulated inorganic heat insulation mortar layer is become after sclerosis 10h, 28 days ultimate compression strength 1.0 MPa of screed, unit dry weight is 200kg/m 3 , over dry thermal conductivity is 0.06W/ (m.K), and institute's heat-preserving wall can be made to reach the requirement of building energy conservation 70%.
a kind of inorganic foamed thermal insulation mortar directly smearing construction at exterior wall is obtained in specific embodiment 8, directly can smear construction on the body of wall needing isothermal holding, inorganic foamed thermal insulation mortar layer thickness is at 40 millimeters, carry out striking off troweling construction before gelling material final set, then weather resistance, water-repellancy, well-insulated inorganic heat insulation mortar layer is become after sclerosis 10h, 28 days ultimate compression strength 0.8 MPa of screed, unit dry weight is 150kg/m 3 , over dry thermal conductivity is 0.06W/ (m.K), and institute's heat-preserving wall can be made to reach the requirement of building energy conservation 70%.

Claims (3)

1. a kind of inorganic foamed thermal insulation mortar, is characterized in that this thermal insulation mortar is made up of the kicker of gelling material, expanded perlite granule, high molecular polymer, setting accelerator, hardening accelerator, pneumatogen, chemical foaming agent hydrogen peroxide, chemical foaming agent, hydrophober, enhancing staple fibre and water; The mass ratio of described gelling material and described expanded perlite granule is (1~ 3): 1; Described high molecular polymer accounts for 0.1% of described gelling material quality~ 2.5%; Described setting accelerator accounts for 0.5% of described gelling material quality~ 2%; Described hardening accelerator accounts for 0.5% of described gelling material quality~ 2%; Described pneumatogen accounts for 0.01% of described gelling material quality~ 0.1%; Described chemical foaming agent hydrogen peroxide accounts for 2% of described gelling material quality~ 5%; The kicker of described chemical foaming agent accounts for 0.05% of described gelling material quality~ 0.2%; Described hydrophober accounts for 0.5% of described gelling material quality~ 2%; Described enhancing staple fibre accounts for 0.1% of described gelling material quality~ 0.5%, in described inorganic foamed thermal insulation mortar, water and gelling material mass ratio are 0.45~ 0.8; Described gelling material is made up of general-purpose cement and activate micro powder, described activate micro powder is composited by the one in flyash, slag micropowder, silicon powder, higher ridge powder, light-burned clay powder, light-burned colliery powder, dry hydrate, slag micro powder or wantonly more than two kinds, wherein said general-purpose cement content accounts for 20% ~ 95% of described gelling material quality, described activate micro powder accounts for 5% ~ 80% of described gelling material quality, and the specific surface area of described activate micro powder is greater than 400m 2 / kg, the label of described general-purpose cement is more than 42.5; Described high molecular polymer is re-dispersible glue powder, any one or wantonly more than two kinds in methylcellulose gum, carboxylic propyl methocel and polyoxyethylene glycol are formed with arbitrary proportion compound; To be that any one or any two in sodium metaaluminate, Starso, Sodium Silicofluoride, potassium silicofluoride, high-alumina cement and aluminosulfate cement are above formed with arbitrary proportion described setting accelerator; To be that any one or any two in calcium sulfate, alum, Sodium sulfate anhydrous.min(99), calcium chloride, calcium formiate, Sodium Nitrite and trolamine are above formed with arbitrary proportion described hardening accelerator; Described pneumatogen is any one in saponin(e powder, sodium lauryl sulphate, Sodium dodecylbenzene sulfonate and sodium laurylsulfonate; The kicker of described chemical foaming agent is any one in ferric sulfate, ferrous sulfate, iron(ic) chloride, iron protochloride and potassium permanganate; Described hydrophober is calcium stearate or organic-silicon-modified clay; Described enhancing staple fibre is any one in lignin fibre, polyphenyl alkene fiber, PVA fiber, flax silk and monofilament, and the length of described enhancing staple fibre is 5 ~ 15 millimeters.
2. according to claim 1, an inorganic foamed thermal insulation mortar, is characterized in that the size range of described expanded perlite granule is 0.1 ~ 2.5 millimeter, piles up unit weight 100 ~ 250kg/m 3 , water-intake rate is greater than 100%; The mass concentration of described chemical foaming agent hydrogen peroxide is 27.5wt% ~ 50wt%.
3. a kind of preparation method of inorganic foamed thermal insulation mortar described in claim 1, is characterized in that the method concrete steps are as follows:
(1) first the trace ingredients in batching is added in the activate micro powder of described gelling material according to ratio in batching, first carry out the pre-stirring of 3 ~ 10 minutes, stirred the mixture in advance, described trace ingredients comprises: the kicker of setting accelerator, hardening accelerator, high molecular polymerization powder, enhancing staple fibre, hydrophober, chemical foaming agent and pneumatogen;
(2) fully mix in the general-purpose cement that stirring the mixture in advance of step (1) being obtained adds the described gelling material taken by proportioning, mixing time is 2 ~ 10 minutes;
(3) described expanded perlite granule is taken by proportioning, and taken expanded perlite granule is divided into two portions, first the expanded perlite granule of 20wt% ~ 80wt% is joined in the mixture that step (2) obtains and continue mixing, this demi-inflation perlite particle is base material expanded perlite granule, mixing time is 3 ~ 5 minutes, obtain the dry-mixed mortar before foaming, described dry-mixed mortar adds required water by proportioning at the construction field (site), and stir, churning time 2 ~ 5 minutes, makes the light mortar that can flow;
(4) described chemical foaming agent hydrogen peroxide is taken by proportioning, and chemical foaming agent hydrogen peroxide is joined in step (3) remaining expanded perlite granule, described remaining expanded perlite granule is carrier expanded perlite granule, after the described remaining expanded perlite granule of the saturated suction of described chemical foaming agent hydrogen peroxide, the remaining expanded perlite granule of described saturated suction chemical foaming agent hydrogen peroxide is admixed in the light mortar that can flow that step (3) obtains and carry out foam in place, stir after 1 ~ 2 minute, obtain target product: inorganic foamed thermal insulation mortar.
CN201410104347.0A 2014-03-20 2014-03-20 Inorganic foaming thermal-insulation mortar and preparation method thereof CN103922789B (en)

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