CN101792286A - Silicon-based microcrystal heat-insulating material - Google Patents

Silicon-based microcrystal heat-insulating material Download PDF

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Publication number
CN101792286A
CN101792286A CN200910251067A CN200910251067A CN101792286A CN 101792286 A CN101792286 A CN 101792286A CN 200910251067 A CN200910251067 A CN 200910251067A CN 200910251067 A CN200910251067 A CN 200910251067A CN 101792286 A CN101792286 A CN 101792286A
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China
Prior art keywords
silicon
heat
based microcrystal
insulating material
calcium carbonate
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CN200910251067A
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Inventor
黄勇
何正莉
莫君
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CHONGQING JUWEI CONSTRUCTION MATERIALS Co Ltd
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CHONGQING JUWEI CONSTRUCTION MATERIALS Co Ltd
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Priority to CN200910251067A priority Critical patent/CN101792286A/en
Publication of CN101792286A publication Critical patent/CN101792286A/en
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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
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • 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

Abstract

The invention discloses a silicon-based microcrystal heat-insulating material comprising the following components in percentage by weight: 30.5%-46.5% of silicon-based microcrystal, 43%-55.6% of inorganic gelled materials, 9%-11.8% of crack-resistant additives and 1.37%-2.32% of auxiliary adhesives. The silicon-based microcrystal heat-insulating material has good temperature-resisting performance, low and stable heat conductivity, corrosion resistance, high strength and good construction performance when used for a heat-insulating system, has good flame-retardant effect and can achieve the purpose of having the same service life of concrete or cement plaster according to physical and chemical performance analysis.

Description

Silicon-based microcrystal heat-insulating material
Technical field
The present invention relates to a kind of lagging material, relate in particular to a kind of silicon-based microcrystal heat-insulating material.
Background technology
According to the energy-saving and heat-insulating material physico-chemical property, can be divided into organic insulation material and inorganic heat insulation material.The thermal conductivity ratio of organic insulation material commonly used is easier to reduce, but it exists that intensity is low, workability is poor, fire resistance is poor, high temperature produces hazardous and noxious substances and anti-aging weather resisteant is poor, bounce-back property is big and be subject to natural defect such as worm ant bite and corrosion in the construction.Thus, the research and development of inorganic heat insulation material and use are the directions of energy-saving material technology, environmental protection requirement and market development, have active operation significance and good Sustainable development meaning.
Insulation mainly refers at high low-temperature (low temperature) vessel, pipeline, equipment, thermal technology's (refrigeration) system, manually build body etc. outer (interior) and adhere to the lower material of thermal conductivity, reduce the heat-exchange capacity (the heat exchange here is meant the thermal conduction that heat energy carries out with mode of vibration) in working medium, thermal source, building body inside etc. and the external world, guarantee that processing condition need or reach energy saving purposes, this process is called insulation (heat insulation).The material of these low thermal conductivities is called lagging material when realizing insulation (heat insulation) purpose, be used for thermal insulation layer protection or fixing, waterproof materials and be called protecting materials.
Relatively Chang Yong inorganic heat insulation material has: asbestos (forbidding), rock silk floss, glass fibre, float pearl (partial fuel coal power plant by product claims the porcelain microballon again), expanded vermiculite, pearlstone, mica, diatomite; Organic insulation material commonly used is as rubber, styrofoam (particle), foaming plate, polyethylene, straw etc.According to heat transfer theory, lagging material density little (big, the intermolecular thermal vibration transmission speed of the molecule spacing distance of material is little), therefore, its thermal conductivity λ value is less.At occurring in nature, immobilized air effect of heat insulation best (thermal conductivity is 0.023W/mK) is an immobilized water secondly.But relatively be difficult to fix, the thermal conductivity of its fixture of condition is all big or cost is higher.Normally its thermal conductivity of the material that density is more little is more little, but intensity is also more little.As glass (Na2OCaO6SiO2), being processed into sheet glass is 2.5g/cm at unit weight 3The time, thermal conductivity～0.76W/mK; And be processed into glass fibre at unit weight 0.08g/cm 3The time, its thermal conductivity～0.038W/mK.
At present, domesticly be used to build rubber powder granule insulation mortar or the section bar that lagging material that body goes along with sb. to guard him mainly contains polystyrene, urethane, (closed pore, perforate) pearlstone dry powder insulation mortar (heat-insulating profile), other lightweight building materials, even the foaming plate also uses as the building enclosure lagging material.The insulation that is used for heat power engineering system mainly contains glass wool, rock wool, vermiculite, mica, perlite, diatomite or its mixed product.
But, granular polystyrene and normal expanded perlite do in light skeletal and other the traditional thermal insulation mortar many defectives and deficiency are arranged, and, easily efflorescence big as the pearlstone water-intake rate, volume is received the mistake rate and greatly, easily caused product later stage heat-insulating property to reduce and phenomenon such as hollowing cracking in slip stirs; The fire resistance of organic materialss such as polystyrene is poor, high temperature produces obnoxious flavour and anti-aging weather resisteant is low, bounce-back property is big and be subject to worm ant bite and corrosion etc. in the construction; When temperature reached 80 ℃, polystyrene just began to decompose and produce toxic and harmful; Simultaneously, the workability of most of organic materials is relatively poor etc.
Summary of the invention
For addressing the above problem, the invention provides a kind of silicon-based microcrystal heat-insulating material, its component is silicon-based microcrystal, inorganic coagulation material, cracking resistance admixture and auxiliary binder, and each component shared weight percent in total material is: silicon-based microcrystal 30.5～46.5%, inorganic coagulation material 43～55.6%, cracking resistance admixture 9～11.8%, auxiliary binder 1.37～2.32%.
Described cracking resistance admixture is made of following component: montmorillonite, mould inhibitor, anti-crack water-proof agent, fine particle calcium carbonate, fine particle calcium carbonate gypsum and alkaline thickening material; Each component shared weight percent in the cracking resistance admixture is: montmorillonite 2 4～27%, mould inhibitor 2.5～2.8%, anti-crack water-proof agent 23～28%, fine particle calcium carbonate 40～42%, fine particle calcium carbonate gypsum≤1.5%, alkaline thickening material≤6.5%.
Described auxiliary binder is made of following component: each component shared weight percent in auxiliary binder is: acetic acid second is rare-ethylene copolymer rubber powder (VAE rubber powder) or acetic acid second is rare-and ethylene copolymer auxiliary agent (VAE auxiliary agent) 24.6～40.0%, non-ionic celluloses ether (HPMC) or methylcellulose gum (MC) 43.6～61.5%, wood fibre 6.2～8.7%, PP fiber 6.2～8.7%.
Useful technique effect of the present invention is: silicon-based microcrystal heat-insulating material is a kind of inorganic mineral material, and surperficial vitreous is sealed, is irregular spherule particle, and inside is the porous air cavity configuration, is used to prepare the aglite of silicon-based microcrystal thermal insulation mortar.This material have as heat-insulation system that heat resistance is good, thermal conductivity is low and stable, corrosion-resistant, intensity is high, workability is good, do not burn (silicon-based microcrystal fusing point 〉=1250 ℃); Thermal insulation layer has increased system's total heat resistance under the condition of equivalent thickness prerequisite.According to physical and chemical performance analysis, can reach and mixed earth or sand-cement slurry purpose with the life-span.Lagging material of the present invention can be widely used in building body energy-saving heat preserving system and therrmodynamic system heat-insulation and heat-preservation system.
Embodiment
General body of wall the heat-insulation system structure be: basic unit's body of wall (mixing earth and various Masonry Wall), interfacial layer (interfacial agents), thermal insulation layer (be silicon-based microcrystal heat-insulating material of the present invention, be called the silicon-based microcrystal thermal insulation mortar here), anti-cracking waterproof layer (anti-cracking and waterproofing mortar+acidproof grid cloth or anti-cracking and waterproofing mortar are pressed into pot galvanize electrowelding net＜crab-bolt and basic unit is fixed 〉), finish coat (flexible waterproof putty+coating or face brick caking agent+face brick＜jointing agent 〉).
Thermal insulation layer adopts silicon-based microcrystal heat-insulating material of the present invention, the component of this material is silicon-based microcrystal, inorganic coagulation material, cracking resistance admixture and auxiliary binder, and each component shared weight percent in total material is: silicon-based microcrystal 30.5～46.5%, inorganic coagulation material 43～55.6%, cracking resistance admixture 9～11.8%, auxiliary binder 1.37～2.32%.
Described cracking resistance admixture is made of following component: montmorillonite, mould inhibitor, anti-crack water-proof agent, fine particle calcium carbonate, fine particle calcium carbonate gypsum and alkaline thickening material; Each component shared weight percent in the cracking resistance admixture is: montmorillonite 2 4～27%, mould inhibitor 2.5～2.8%, anti-crack water-proof agent 23～28%, fine particle calcium carbonate 40～42%, fine particle calcium carbonate gypsum≤1.5%, alkaline thickening material≤6.5%.
Described auxiliary binder is made of following component: each component shared weight percent in auxiliary binder is: acetic acid second is rare-ethylene copolymer rubber powder (VAE rubber powder) or acetic acid second is rare-and ethylene copolymer auxiliary agent (VAE auxiliary agent) 24.6～40.0%, non-ionic celluloses ether (HPMC) or methylcellulose gum (MC) 43.6～61.5%, wood fibre 6.2～8.7%, PP fiber 6.2～8.7%.
According to different areas, different climatope and different heat insulation effect requirements, adjust each components contents, to reach design and local energy-saving and cost-reducing requirement.Inorganic coagulation material mainly refers to cement (comprising white cement) class material, is the main adhesives and the intensity source of lagging material.Acetic acid second is rare-and ethylene copolymer rubber powder (VAE rubber powder) or acetic acid second is rare-and ethylene copolymer auxiliary agent (VAE auxiliary agent), non-ionic celluloses ether (HPMC), methylcellulose gum (MC) mainly play a role before the inorganic coagulation material later strength is brought into play, also can improve workability.
The performance index of silicon-based microcrystal thermal insulation mortar wall insulation system:
Figure G2009102510671D00031
The physical and mechanical property index of silicon-based microcrystal thermal insulation mortar:
Figure G2009102510671D00032
Figure G2009102510671D00041
Kuenzel exterior wall protection theory is thought, meets the material that following three formulas require, and could protect exterior wall or insulation thermal insulation layer effectively: absorption coerfficient W≤0.5kg/ (m 2H 0.5); Vapor diffusion resistance S d≤ 2m; WS d≤ 0.1kg/ (mh 0.5).European standard EN 1062 stipulates its absorption coerfficient W≤0.2kg/ (m 2H 0.5), vapor diffusion resistance S d≤ 0.7m.The building coating that is used for exterior wall heat preservation decorative lamination, the requirement of its hydrophobic permeable should be higher than the building coating of common exterior wall finish.The present invention is according to water-absorbent≤0.35kg/ (m 2H 0.5), vapor diffusion resistance≤1.2m, WSd≤0.1kkg (mh 0.5) design silicon-based microcrystal thermal insulation layer relevant parameter.Though the physico-chemical property of silicon-based microcrystal is highly stable, is attached to body of wall, has weather resisteant and the work-ing life that is equal to cement mortar.But,, even completely lose because the driving and the pressure difference of the diffusion of water vapour, wet migration position cause heat-insulating property to reduce when external thermal insulation system (comprise lagging material form system) when seeping water or leaking.Be in particular in seepage, freeze, condense and water vapor diffusion is obstructed etc.In winter, the water of infiltration can freeze, and volumetric expansion is about 9%, thereby produces expansion stress, and these can cause catastrophic destruction to external thermal insulation system.Rodent gas as CO2, SO2, SO3 etc., also is to become acid by water to cause external thermal insulation system to damage.Simultaneously, mechanical external force such as wind and snow, foreign matter also can damage thermal insulation layer.Thus, heat insulating coat necessarily requires waterproof, cracking resistance.This function is finished by anti-cracking and waterproofing mortar, could form the system of complete energy long-term insulation like this.
The preparation of silicon-based microcrystal thermal insulation mortar: press slip and need water: dry mash=(about 0.82～1.15): 1 (mass ratio, should be according to design unit dry weight adjustment), earlier water is added in the stirred vessel, again silicon-based microcrystal heat-insulating mortar dry powder material is put into stirred vessel, stir 8～10min, make slip become even body of paste, can use.Slip must be with joining with usefulness, and the slip for preparing should use up and must not reclaim to land in 1h expects that again secondary adds water and uses.
Silicon-based microcrystal heat-insulating material of the present invention also can be used for therrmodynamic system heat-insulation and heat-preservation system except that being used to build the body energy-saving heat preserving system.

Claims (3)

1. silicon-based microcrystal heat-insulating material, it is characterized in that: its component is silicon-based microcrystal, inorganic coagulation material, cracking resistance admixture and auxiliary binder, and each component shared weight percent in total material is: silicon-based microcrystal 30.5～46.5%, inorganic coagulation material 43～55.6%, cracking resistance admixture 9～11.8%, auxiliary binder 1.37～2.32%.
2. silicon-based microcrystal heat-insulating material according to claim 1 is characterized in that: described cracking resistance admixture is made of following component: montmorillonite, mould inhibitor, anti-crack water-proof agent, fine particle calcium carbonate, fine particle calcium carbonate gypsum and alkaline thickening material; Each component shared weight percent in the cracking resistance admixture is: montmorillonite 2 4～27%, mould inhibitor 2.5～2.8%, anti-crack water-proof agent 23～28%, fine particle calcium carbonate 40～42%, fine particle calcium carbonate gypsum≤1.5%, alkaline thickening material≤6.5%.
3. silicon-based microcrystal heat-insulating material according to claim 1 is characterized in that: described auxiliary binder is made of following component: each component shared weight percent in auxiliary binder is: acetic acid second is rare-ethylene copolymer rubber powder or acetic acid second is rare-and ethylene copolymer auxiliary agent 24.6～40.0%, non-ionic celluloses ether or methylcellulose gum 43.6～61.5%, wood fibre 6.2～8.7%, PP fiber 6.2～8.7%.
CN200910251067A 2009-12-29 2009-12-29 Silicon-based microcrystal heat-insulating material Pending CN101792286A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105571274A (en) * 2016-01-25 2016-05-11 中山昊天节能科技有限公司 Efficient air energy drying room
CN107500614A (en) * 2017-09-06 2017-12-22 绵阳凤面科技有限公司 The good porous silicon-base microcrystal heat-insulating material of weatherability
CN107935460A (en) * 2017-12-07 2018-04-20 遂宁市明川零贰零科技有限公司 The good porous silicon-base microcrystal heat-insulating material of weatherability
CN108273974A (en) * 2018-04-20 2018-07-13 广东北晟益通实业有限公司 Oil pipeline ductile iron pipe, its preparation process and application
CN108331977A (en) * 2018-04-20 2018-07-27 广东北晟益通实业有限公司 Heating pipeline ductile iron pipe, its preparation process and application
CN108612208A (en) * 2018-05-24 2018-10-02 谢思松 Insulation and decoration plate exterior wall external heat preservation system
CN108612209A (en) * 2018-05-24 2018-10-02 谢思松 Gel bead keeps the temperature plate exterior wall external heat preservation system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5786095A (en) * 1996-07-03 1998-07-28 H.B. Fuller Licensing & Financing, Inc. Inorganic based intumescent system
CN101234872A (en) * 2008-03-07 2008-08-06 张辉 Vitrification micro-sphere thermal insulating mortar with self humidity-conditioning function

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5786095A (en) * 1996-07-03 1998-07-28 H.B. Fuller Licensing & Financing, Inc. Inorganic based intumescent system
CN101234872A (en) * 2008-03-07 2008-08-06 张辉 Vitrification micro-sphere thermal insulating mortar with self humidity-conditioning function

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105571274A (en) * 2016-01-25 2016-05-11 中山昊天节能科技有限公司 Efficient air energy drying room
CN107500614A (en) * 2017-09-06 2017-12-22 绵阳凤面科技有限公司 The good porous silicon-base microcrystal heat-insulating material of weatherability
CN107935460A (en) * 2017-12-07 2018-04-20 遂宁市明川零贰零科技有限公司 The good porous silicon-base microcrystal heat-insulating material of weatherability
CN108273974A (en) * 2018-04-20 2018-07-13 广东北晟益通实业有限公司 Oil pipeline ductile iron pipe, its preparation process and application
CN108331977A (en) * 2018-04-20 2018-07-27 广东北晟益通实业有限公司 Heating pipeline ductile iron pipe, its preparation process and application
WO2019201181A1 (en) * 2018-04-20 2019-10-24 广东北晟益通实业有限公司 Spheroidal graphite cast iron pipe for heating pipeline, preparation process and application thereof
CN108331977B (en) * 2018-04-20 2020-06-26 广东北晟益通实业有限公司 Nodular cast iron pipe for thermal pipeline, preparation process and application thereof
CN108273974B (en) * 2018-04-20 2020-06-26 广东北晟益通实业有限公司 Nodular cast iron pipe for petroleum pipeline, preparation process and application thereof
CN108612208A (en) * 2018-05-24 2018-10-02 谢思松 Insulation and decoration plate exterior wall external heat preservation system
CN108612209A (en) * 2018-05-24 2018-10-02 谢思松 Gel bead keeps the temperature plate exterior wall external heat preservation system

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Application publication date: 20100804