CN102167529B - Thermal insulation fire-proof aggregate with polystyrene particle-coated expanded and vitrified bead mortar and preparation method thereof - Google Patents
Thermal insulation fire-proof aggregate with polystyrene particle-coated expanded and vitrified bead mortar and preparation method thereof Download PDFInfo
- Publication number
- CN102167529B CN102167529B CN2010106123577A CN201010612357A CN102167529B CN 102167529 B CN102167529 B CN 102167529B CN 2010106123577 A CN2010106123577 A CN 2010106123577A CN 201010612357 A CN201010612357 A CN 201010612357A CN 102167529 B CN102167529 B CN 102167529B
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- Prior art keywords
- granular polystyrene
- mortar
- thermal insulation
- expanded
- parcel
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/12—Multiple coating or impregnating
-
- 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
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Building Environments (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a thermal insulation fire-proof aggregate with polystyrene particle-coated expanded and vitrified bead mortar and a preparation method thereof, and belongs to the field of wall insulation materials. The aggregate consists of a core layer and a coating layer, wherein the core layer is made of surface-modified polystyrene particles; the coating layer is made of expanded and vitrified bead thermal insulation mortar; and the thermal insulation mortar is added with calcium hydroxide, and the calcium hydroxide is heated and decomposed to absorb heat and release water so as to achieve the flame-retardant effect. The preparation method comprises the following steps of: screening the polystyrene particles, performing inorganic modification on the surfaces of the polystyrene particles, and ensuring that the particle size of the modified polystyrene particles is 0.4-0.7cm; preparing expanded and vitrified bead thermal insulation mortar slurry in a ratio; and coating the surface-modified polystyrene particles by using the expanded and vitrified bead thermal insulation mortar slurry, and drying under natural condition to obtain the aggregate particles with the particle size of 0.7-1.5cm. The aggregate has the characteristics of high thermal insulation and fire-proof property, and has the characteristic of simple operation in the fire-proof thermal insulation application.
Description
Technical field
The invention belongs to the wall heat insulation material field, relate to insulated fire aggregate of a kind of expanded and vitrified small ball mortar parcel granular polystyrene and preparation method thereof.
Background technology
Expanded and vitrified small ball is a kind of inorganic light weight particulate species material monomer with better heat-insulating property that development in recent years is got up; its inner porous cavity; surface vitreous sealing; gloss is level and smooth; physicochemical property is stable; have light weight, thermal insulation, fire prevention, high-low temperature resistant, the excellent specific property such as anti-aging, water-intake rate is little is a kind of environment-friendly type high performance heat preserving and insulating material.
Granular polystyrene belongs to the organic material, good sphericity, and water-intake rate is low, thermal conductivity little [being generally less than 0.041W/ (mK)]; excellent thermal insulation performance, tap density are about 1/10 of glass bead, but grain composition is poor; voidage is large, and is low with cement cementitious intensity, high temperature resistant and resistance to deterioration is poor.Granular polystyrene resistance toheat, adhesive property are poor, and intensity is low, easily the shortcoming of ghost cracking.
Summary of the invention
The objective of the invention is to overcome the poor defective of granular polystyrene fire-protection rating, utilize that the expanded and vitrified small ball fire-protection rating is superior, the characteristics of good heat insulating, the insulated fire aggregate of a kind of insulation, the better expanded and vitrified small ball parcel of fire prevention effect granular polystyrene is provided.
The technical scheme of the insulated fire aggregate of a kind of expanded and vitrified small ball mortar parcel granular polystyrene of the present invention: this aggregate is comprised of sandwich layer and integument, and sandwich layer is the granular polystyrene of surface modification, and integument is the expansion vitrification bead heat-preserving mortar.
The granular polystyrene of surface modification is the granular polystyrene of redispersible polymer latex and gelling material parcel, and gelling material is that mass ratio is cement and the flyash of 6-8.Wherein the mass ratio of redispersible polymer latex and EPS particle is 0.7-0.9 in the modifying material, and the gelling material of outer parcel and the mass ratio of EPS particle are 0.1-0.2.
Expansion vitrification bead heat-preserving mortar wet end furnish is: 42.5 class g cement 24.8-33; glass bead 9-12.4; quartz sand 23-24.8, wood fibre 0.1-1, HPMC 0.1-1; re-dispersible glue powder 1.5-2.5; polypropene staple 0.1-0.5, β semi-hydrated gypsum 0.4-1, whipping agent 0.3-1; above-mentioned siccative mass fraction summation is 67.5-69, adds the calcium hydroxide of dry blend quality 1%-5% again.Moisture added calcium hydroxide in the thermal insulation mortar, because can be absorbed heat and discharge to its decomposes to play flame retardant effect.
The insulated fire aggregate processing method of a kind of expanded and vitrified small ball mortar parcel of the present invention granular polystyrene may further comprise the steps:
(1) granular polystyrene surface modification: select granular polystyrene, with the metering the redispersible polymer latex prepare by water-cement ratio 0.6-0.9 after, be sprayed at the EPS particle surface that constantly stirs, after the wetting parcel of EPS particle surface is complete, again take it as nuclear, add while stirring cement and flyash, parcel one deck inorganic coagulation material makes inorganicization of EPS particle surface.Particle diameter after the modification is 0.4-0.7cm.
(2) preparation expansion vitrification bead heat-preserving mortar slurry (wt%): 42.5 class g cement 24.8-33; glass bead 9-12.4; quartz sand 23-24.8, wood fibre 0.1-1, HPMC 0.1-1; re-dispersible glue powder 1.5-2.5; polypropene staple 0.1-0.5, β semi-hydrated gypsum 0.4-1, whipping agent 0.3-1; above-mentioned siccative mass fraction summation is 67.5-69, adds the calcium hydroxide of dry blend quality 1%-5% again.
(3) granular polystyrene that modification is good and expansion vitrification bead heat-preserving mortar are mixed and made into wet granular, and then dry getting final product under the natural condition.The gained particle size is 0.7-1.5cm
Advantage of the present invention
The invention has the advantages that the characteristic of utilizing the expanded and vitrified small ball fire-protection rating high, be wrapped in outside the granular polystyrene, form a kind of insulation, the better composite light aggregate of fire prevention.This aggregate fire-protection rating is high, can arrive the fire prevention of A level; Thermal conductivity is low, and heat-insulating property is superior; By the surface inorganic modification, it is not in use ftractureed, more have avidity, in using, fireproof heat insulating has the characteristics of easy handling.
Embodiment
Example 1
At first prepare modifying material, the mass ratio of redispersible polymer latex and EPS particle is 0.7 in the modifying material, and the gelling material (mass ratio of cement and flyash is 6) of outer parcel is 0.1 with the mass ratio of EPS particle.Secondly, with the metering the redispersible polymer latex prepare by water-cement ratio 0.6 after, be sprayed at the EPS particle surface that constantly stirs, after the wetting parcel of EPS particle surface is complete, take it as nuclear, add while stirring a certain amount of cement and flyash again, parcel one deck inorganic coagulation material, make inorganicization of EPS particle surface, particle diameter is 0.4-0.7cm.The 3rd, press this proportioning (wt%): 42.5 class g cements 24.8, glass bead 12.4; quartz sand 24.8; wood fibre 1, HPMC 1, re-dispersible glue powder 2.5; polypropene staple 0.5; β semi-hydrated gypsum 1, whipping agent 1, water 31; the calcium hydroxide that adds again above dry blend quality 1%, preparation expansion vitrification bead heat-preserving mortar slurry.At last, granular polystyrene and expansion vitrification bead heat-preserving mortar that modification is good are mixed and made into wet granular, drier getting final product under the natural condition.The gained particle size is 0.7-1.5cm
Example 2
At first prepare modifying material, the mass ratio of redispersible polymer latex and EPS particle is 0.9 in the modifying material, and the gelling material (mass ratio of cement and flyash is 8) of outer parcel is 0.2 with the mass ratio of EPS particle.Secondly, with the metering the redispersible polymer latex prepare by water-cement ratio 0.77 after, be sprayed at the EPS particle surface that constantly stirs, after the wetting parcel of EPS particle surface is complete, take it as nuclear, add while stirring a certain amount of cement and flyash again, parcel one deck inorganic coagulation material, make inorganicization of EPS particle surface, particle diameter is 0.4-0.7cm.The 3rd, press this proportioning (wt%): 42.5 class g cements 33, glass bead 9; quartz sand 23; wood fibre 0.1, HPMC 0.1, re-dispersible glue powder 1.5; polypropene staple 0.1; β semi-hydrated gypsum 0.4, whipping agent 0.3, water 32.5; the calcium hydroxide that adds again above dry blend quality 5%, preparation expansion vitrification bead heat-preserving mortar.At last, granular polystyrene and expansion vitrification bead heat-preserving mortar that modification is good are mixed and made into wet granular, drier getting final product under the natural condition.The gained particle size is 0.7-1.5cm
Example 3
At first prepare modifying material, the mass ratio of redispersible polymer latex and EPS particle is 0.8 in the modifying material, and the gelling material (mass ratio of cement and flyash is 7) of outer parcel is 0.15 with the mass ratio of EPS particle.Secondly, with the metering the redispersible polymer latex prepare by water-cement ratio 0.9 after, be sprayed at the EPS particle surface that constantly stirs, after the wetting parcel of EPS particle surface is complete, take it as nuclear, add while stirring a certain amount of cement and flyash again, parcel one deck inorganic coagulation material, make inorganicization of EPS particle surface, particle diameter is 0.4-0.7cm.The 3rd, press this proportioning (wt%): 42.5 class g cements 30, glass bead 10; quartz sand 24; wood fibre 0.5, HPMC 0.5, re-dispersible glue powder 2; polypropene staple 0.5; β semi-hydrated gypsum 0.6, whipping agent 0.4, water 31.5; the calcium hydroxide that adds again above dry blend quality 4%, preparation expansion vitrification bead heat-preserving mortar slurry.At last, granular polystyrene and expansion vitrification bead heat-preserving mortar that modification is good are mixed and made into wet granular, drier getting final product under the natural condition.The gained particle size is 0.7-1.5cm.
Claims (3)
1. the insulated fire aggregate of an expanded and vitrified small ball mortar parcel granular polystyrene is characterized in that this aggregate is comprised of sandwich layer and integument, and sandwich layer is the granular polystyrene of surface modification, and integument is the expansion vitrification bead heat-preserving mortar;
The granular polystyrene of surface modification is the granular polystyrene of redispersible polymer latex and gelling material parcel, and gelling material is that mass ratio is cement and the flyash of 6-8;
Expansion vitrification bead heat-preserving mortar wet end furnish is: 42.5 class g cement 24.8-33, glass bead 9-12.4, quartz sand 23-24.8, wood fibre 0.1-1, HPMC 0.1-1, re-dispersible glue powder 1.5-2.5, polypropene staple 0.1-0.5, β semi-hydrated gypsum 0.4-1, whipping agent 0.3-1, above-mentioned dry blend mass fraction summation is 67.5-69, adds the calcium hydroxide of dry blend quality 1%-5% again; Granular polystyrene particle diameter after the modification is 0.4-0.7cm, and the insulated fire particles of aggregates of expanded and vitrified small ball mortar parcel granular polystyrene is of a size of 0.7-1.5cm.
2. a kind of expanded and vitrified small ball mortar as claimed in claim 1 wraps up the insulated fire aggregate of granular polystyrene; it is characterized in that; the mass ratio of redispersible polymer latex and granular polystyrene is 0.7-0.9 in the modifying material, and the gelling material of outer parcel and the mass ratio of granular polystyrene are 0.1-0.2.
3. the insulated fire aggregate processing method of a kind of expanded and vitrified small ball mortar parcel granular polystyrene as claimed in claim 1 is characterized in that, may further comprise the steps:
(1) granular polystyrene surface modification: select granular polystyrene, with the metering the redispersible polymer latex prepare by water-cement ratio 0.6-0.9 after, be sprayed at the granular polystyrene surface of constantly stirring, after granular polystyrene moistened surface parcel is complete, again take it as nuclear, add while stirring cement and flyash, parcel one deck inorganic coagulation material makes the granular polystyrene surface inorganic;
(2) preparation expansion vitrification bead heat-preserving mortar slurry wt%:42.5 class g cement 24.8-33, glass bead 9-12.4, quartz sand 23-24.8, wood fibre 0.1-1, HPMC 0.1-1, re-dispersible glue powder 1.5-2.5, polypropene staple 0.1-0.5, β semi-hydrated gypsum 0.4-1, whipping agent 0.3-1, water 31-32.5 adds the calcium hydroxide of dry blend quality 1%-5% again;
(3) granular polystyrene that modification is good and expansion vitrification bead heat-preserving mortar are mixed and made into wet granular, and then drying gets final product under field conditions (factors).
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CN2010106123577A CN102167529B (en) | 2010-12-29 | 2010-12-29 | Thermal insulation fire-proof aggregate with polystyrene particle-coated expanded and vitrified bead mortar and preparation method thereof |
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CN2010106123577A CN102167529B (en) | 2010-12-29 | 2010-12-29 | Thermal insulation fire-proof aggregate with polystyrene particle-coated expanded and vitrified bead mortar and preparation method thereof |
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