CN105819814A - Desulfurized gypsum base machine-sprayed thermal insulation mortar and preparation method thereof - Google Patents

Desulfurized gypsum base machine-sprayed thermal insulation mortar and preparation method thereof Download PDF

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Publication number
CN105819814A
CN105819814A CN201610157464.2A CN201610157464A CN105819814A CN 105819814 A CN105819814 A CN 105819814A CN 201610157464 A CN201610157464 A CN 201610157464A CN 105819814 A CN105819814 A CN 105819814A
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China
Prior art keywords
thermal insulation
insulation mortar
powder
base machine
water
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CN201610157464.2A
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Chinese (zh)
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CN105819814B (en
Inventor
方有春
仇多宏
程佳
丁益
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Anton Investment Holding Group Co.,Ltd.
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Hefei Guorui Integrated Building Technology Co Ltd
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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14Compositions 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 calcium sulfate cements
    • C04B28/142Compositions 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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
    • C04B28/144Compositions 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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/46Water-loss or fluid-loss reducers, hygroscopic or hydrophilic agents, water retention agents
    • C04B2103/465Water-sorbing agents, hygroscopic or hydrophilic agents
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034Physico-chemical characteristics of the mixtures
    • C04B2111/00146Sprayable or pumpable mixtures
    • C04B2111/00155Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention discloses a desulfurized gypsum base machine-sprayed thermal insulation mortar and a preparation method thereof, and relates to the field of composite thermal insulation materials. The mortar comprises the following components in parts by weight: 65 to 85 parts of calcined desulfurized gypsum powder, 5 to 10 parts of cement, 10 to 20 parts of slag micropowder, 0 to 2.5 parts of thixotropic lubricant, 0.8 to 2.2 parts of EPS particle, 0.4 to 1 part of redispersible emulsion powder, 0.2 to 0.8 part of water retaining agent, 0.2 to 0.8 part of alpha-starch, 0.05 to 0.35 part of gypsum retarder, 0.1 to 0.5 part of polyvinyl alcohol, and 50 to 80 parts of water. The preparation method is simple, the cost is low, and the thermal insulation mortar has a good thermal insulation performance, is environment-friendly and energy saving, and is suitable for machine spraying operation.

Description

A kind of desulfurized gypsum base machine spray thermal insulation mortar and preparation method thereof
Technical field
The present invention relates to compound insulating material field, particularly relate to a kind of desulfurized gypsum base machine spray thermal insulation mortar and preparation method thereof.
Background technology
The cold bending thin wall type light steel wall building enclosure of traditional rock wool heat-preservation battenboard is constructional difficulties when filling rock wool, and pollutes environment, superfine first fiber that its fiber splits into, and can suspend several weeks, several months long, pollute constantly in air and water.Fill the cold bending thin wall type same constructional difficulties of light steel wall building enclosure of hard polyurethane foam, pollute environment, harmful.
General gypsum base thermal insulation mortar is when producing cold bending thin wall type light-weight structure residence industry, due to its poor water retention property, mortar internal cohesion is bad, tends not to directly use machine to spray, even if machine spraying also there will be the phenomenon such as sagging, landing after plugging and spraying.
Gypsum base machine spray thermal insulation mortar refers to having the low-density EPS granule of insulation capacity as aglite, using Gypsum Fibrosum powder is major gelled material and other multiple elements design additive, by a certain percentage, make through certain technique, and the insulation material that machine sprays can be used after mix.
In recent years, comprehensive utilization industrial residue prepares novel green energy saving building material has become an important development trend of China's building material industry, utilizes the industrial solid castoff such as desulfurated plaster, slag micropowder to prepare novel gypsum base insulation Machine-blasting mortar and employing machine spray spraying technology construction technology produces cold bending thin wall type light-weight structure residence industry and become a popular research topic.
Summary of the invention
Present invention aim to address above-mentioned deficiency, the desulfurized gypsum base machine spray thermal insulation mortar that a kind of light weight, thermal and insulating performance are good, low cost, speed of application fast, machine can be used to spray is provided, it is a further object of the present invention to provide the preparation method of above-mentioned material.
For achieving the above object, the invention provides a kind of desulfurized gypsum base machine spray thermal insulation mortar, the weight portion of its each component and each component is as follows: calcining desulfurization gypsum powder 65-85 part, cement 5-10 part, slag micropowder 10-20 part, thixotropic lubricant 0-2.5 part, EPS granule 0.8-2.2 part, redispersable latex powder 0.4-1 part, water-retaining agent 0.2-0.8 part, alphalise starch 0.2-0.8 part, calcium sulphate retarder 0.05-0.35 part, polyvinyl alcohol 0.1-0.5 part, water 50-80 part.
The specific surface area of wherein the most described calcining desulfurization gypsum powder is 250-400m2/ kg, it is mainly composed of semi-hydrated gypsum;The specific surface area of described slag micropowder is 325-500m2/kg;Described cement is P O 42.5 cement.
Preferably described redispersable latex powder is the one in VAE latex powder, vinyl acetate-tertiary ethylene carbonate-acrylic ester copolymer latex powder or polyvinyl acetate-generating vinyl carboxylate-ethylene copolymer.
Preferably described calcium sulphate retarder is the one in sodium citrate, citric acid, sodium polyphosphate or tartaric acid;Described water-retaining agent is hydroxypropyl methyl cellulose ether (HPMC) or methyl cellulose ether (MC), and viscosity is between 5-20 ten thousand mpa s;Described alphalise starch can be swelled into translucent liquid in water;Described thixotropic lubricant is the one in aluminium-magnesium silicate or bentonite;Described polyvinyl alcohol is the product of molecular weight 100,000.
The particle diameter of preferably described EPS granule is between 0.30-0.5mm, and bulk density is 4.5-5.5kg/m3
Present invention also offers the preparation method of above-mentioned a kind of desulfurized gypsum base machine spray thermal insulation mortar, it specifically comprises the following steps that first will calcine desulfurization gypsum powder, cement, slag micropowder, thixotropic lubricant, calcium sulphate retarder, water-retaining agent, alphalise starch, polyvinyl alcohol, redispersable latex powder is put in multi-functional dry powder blender, mix and blend 5-15 minute, the thermal insulation mortar masterbatch being uniformly mixed, during use, masterbatch is put in mortar mixer, mix and blend after adding water, blender rotating speed 60-80 rev/min, stir 2-5 minute, put into EPS granule again, blender rotating speed 60-80 rev/min, stir 5-10 minute, obtain gypsum base rubber powder EPS particle heat-insulating Machine-blasting mortar.
In the present invention, a kind of desulfurized gypsum base machine spray thermal insulation mortar is as a kind of heat-insulating material, as packing material in cold bending thin wall type lightweight steel construction, reduce the heat transfer coefficient of masonry wall structure, reduce heat conduction efficiency, effectively prevent the transmission of indoor heat from-inner-to-outer in evening in winter, reach the purpose of insulation.Owing to desulfurated plaster is mainly composed of semi-hydrated gypsum, its heat evolution velocity is very rapid, is often unfavorable for the use in architectural engineering;Desulfurated plaster after the calcining that the present invention utilizes, through the slow setting of calcium sulphate retarder, adds the operating time of spray coating heat preservation mortar;It is added into water-retaining agent and adds the water-retaining property of mortar and the internal cohesion of mortar;While alphalise starch adds consistency of mortar, decrease water-retaining agent hydroxypropyl first class cellulose or the usage amount of methyl cellulose ether (MC), saved cost;The introducing of polyvinyl alcohol adds the flexibility of machine spray thermal insulation mortar, decreases the consumption of redispersable latex powder, enhances and light steel, the bonding force of structural slab simultaneously;Cement, the incorporation of slag micropowder further add the intensity after mortar hydration and hardening and water resistance;And EPS granule makes mortar quality lighter, thermal and insulating performance is more preferable, effectively reduces the heat transfer coefficient of masonry wall structure, improves thermal insulation mortar thermal insulation;The incorporation of other multiple elements design additive simultaneously makes it that machine can be used to spray, and spraying in not plugging, after spraying not sagging, do not slide.
Employing technique scheme there is advantages that
Desulfurated plaster of the present invention is mainly from the industrial by-products of thermal power plant, steel mill or large chemical complex; semi-hydrated gypsum is obtained after calcining; the natural gypsum is replaced to use in building material industry; both can economize on resources; it is possible to prevent again industry byproduct solid pollution; preserve the ecological environment, environmental protection and energy saving;It is simple that gypsum base machine of the present invention spray thermal insulation mortar has preparation method, with low cost, has good thermal and insulating performance;Desulfurized gypsum base machine of the present invention spray thermal insulation mortar can spray by machine, while speed of application is fast, more saves manual labor's amount, has saved cost;Desulfurized gypsum base machine of the present invention spray thermal insulation mortar not plugging in machine sprays, not sagging, not landing after spraying.
Detailed description of the invention
The present invention is illustrated below by embodiment:
Proportionally weigh various raw material; first the calcining desulfurization gypsum powder in proportioning, cement, slag micropowder, thixotropic lubricant, calcium sulphate retarder, water-retaining agent, alphalise starch, polyvinyl alcohol, redispersable latex powder are mixed and stirred for uniformly; form product masterbatch; mix with EPS granule again during use; add water, stir.Thermal insulation mortar application needs are sprayed, by adjusting invention formula, it is possible to obtain required performance according to gypsum base machine.
Embodiment 1
By weight, weighing specific surface area is 350m2The calcining desulfurization gypsum powder of/kg 83 parts, cement 6 parts, specific surface area is 360m2The slag micropowder of/kg 10 parts, thixotropic lubricant 1 part, sodium citrate 0.25 part, water-retaining agent 0.3 part, viscosity is 100,000 mpa.s, alphalise starch 0.3 part, polyvinyl alcohol 0.2 part, VAE latex powder 0.8 part, put in multi-functional dry powder blender, mix and blend 10 minutes, the thermal insulation mortar masterbatch being uniformly mixed, again masterbatch is put in mortar mixer, add water mix and blend 3 minutes after 70 parts, blender rotating speed 60 revs/min, put into EPS granule 1.9 parts again, blender rotating speed 60-80 rev/min, stir 5 minutes, obtain gypsum base rubber powder EPS particle heat-insulating Machine-blasting mortar.
Embodiment 2
By weight, weighing specific surface area is 350m2The calcining desulfurization gypsum powder of/kg 79 parts, cement 8 parts, specific surface area is 360m2The slag micropowder of/kg 12 parts, thixotropic lubricant 1 part, sodium citrate 0.25 part, water-retaining agent 0.2 part, viscosity is 100,000 mpa.s, alphalise starch 0.4 part, polyvinyl alcohol 0.3 part, VAE latex powder 0.6 part, put in multi-functional dry powder blender, mix and blend 10 minutes, the thermal insulation mortar masterbatch being uniformly mixed, again masterbatch is put in mortar mixer, add water mix and blend 3 minutes after 70 parts, blender rotating speed 60 revs/min, put into EPS granule 1.9 parts again, blender rotating speed 60-80 rev/min, stir 5 minutes, obtain gypsum base rubber powder EPS particle heat-insulating Machine-blasting mortar.
Embodiment 3
By weight, weighing specific surface area is 350m2The calcining desulfurization gypsum powder of/kg 78 parts, cement 10 parts, specific surface area is 360m2The slag micropowder of/kg 10 parts, thixotropic lubricant 1.5 parts, sodium citrate 0.25 part, water-retaining agent 0.2 part, viscosity is 200,000 mpa.s, alphalise starch 0.5 part, polyvinyl alcohol 0.4 part, VAE latex powder 0.6 part, put in multi-functional dry powder blender, mix and blend 10 minutes, the thermal insulation mortar masterbatch being uniformly mixed, again masterbatch is put in mortar mixer, add water mix and blend 3 minutes after 70 parts, blender rotating speed 60 revs/min, put into EPS granule 1.0 parts again, blender rotating speed 60-80 rev/min, stir 5 minutes, obtain gypsum base rubber powder EPS particle heat-insulating Machine-blasting mortar.
Embodiment 4
By weight, weighing specific surface area is 350m2The calcining desulfurization gypsum powder of/kg 75 parts, cement 10 parts, specific surface area is 360m2The slag micropowder of/kg 12 parts, thixotropic lubricant 2 parts, sodium citrate 0.25 part, water-retaining agent 0.3 part, viscosity is 200,000 mpa.s, alphalise starch 0.5 part, polyvinyl alcohol 0.5 part, VAE latex powder 0.6 part, put in multi-functional dry powder blender, mix and blend 10 minutes, the thermal insulation mortar masterbatch being uniformly mixed, again masterbatch is put in mortar mixer, add water mix and blend 3 minutes after 70 parts, blender rotating speed 60 revs/min, put into EPS granule 1.0 parts again, blender rotating speed 60-80 rev/min, stir 5 minutes, obtain gypsum base rubber powder EPS particle heat-insulating Machine-blasting mortar.
Relevant parameter test result is as shown in table 1
Table 1: each embodiment testing result and standard-required, reference standard JG/T158-2013 " glue powder polyphenyl granule exterior wall material for external thermal insulation system ":
Table 1 surveyed polymer thermal insulating mortar properties meets JG/T 158-2013 " glue powder polyphenyl granule exterior wall material for external thermal insulation system " correlated performance requirement, and after adding thixotropic lubricant and other multiple elements design additive, desulfurized gypsum base insulation Machine-blasting mortar light weight, insulation, there is certain flexibility, and machine can be used to spray, and and not plugging in spraying, the not technological merit such as sagging, not landing after spraying.
The above; it is only the detailed description of the invention of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the technical scope that disclosed herein; the change can expected without creative work or replacement, all should contain within protection scope of the present invention.

Claims (6)

1. a desulfurized gypsum base machine spray thermal insulation mortar, it is characterized in that: include that the weight portion of following components and each component is as follows: calcining desulfurization gypsum powder 65-85 part, cement 5-10 part, slag micropowder 10-20 part, thixotropic lubricant 0-2.5 part, EPS granule 0.8-2.2 part, redispersable latex powder 0.4-1 part, water-retaining agent 0.2-0.8 part, alphalise starch 0.2-0.8 part, calcium sulphate retarder 0.05-0.35 part, polyvinyl alcohol 0.1-0.5 part, water 50-80 part.
A kind of desulfurized gypsum base machine spray thermal insulation mortar the most according to claim 1, it is characterised in that: the specific surface area of described calcining desulfurization gypsum powder is 250-400m2/kg;Described slag micropowder specific surface area is 325-500m2/kg。
A kind of desulfurized gypsum base machine spray thermal insulation mortar the most according to claim 1, it is characterised in that: described redispersable latex powder is the one in VAE latex powder, vinyl acetate-tertiary ethylene carbonate-acrylic ester copolymer latex powder or polyvinyl acetate-generating vinyl carboxylate-ethylene copolymer.
A kind of desulfurized gypsum base machine spray thermal insulation mortar the most according to claim 1, it is characterised in that: described calcium sulphate retarder is the one in sodium citrate, citric acid, sodium polyphosphate or tartaric acid;Described water-retaining agent is hydroxypropyl methyl cellulose ether or methyl cellulose ether, and water-retaining agent viscosity is between 5-20 ten thousand mpa s;Described thixotropic lubricant is aluminium-magnesium silicate or bentonite.
A kind of desulfurized gypsum base machine spray thermal insulation mortar the most according to claim 1, it is characterised in that: the particle diameter of described EPS granule is between 0.3-0.5mm, and bulk density is 4.5-5.5kg/m3
6. the preparation method of a desulfurized gypsum base machine spray thermal insulation mortar, it is characterized in that: carry out as follows: first will calcine desulfurization gypsum powder, cement, slag micropowder, thixotropic lubricant, calcium sulphate retarder, water-retaining agent, alphalise starch, polyvinyl alcohol, redispersable latex powder is put in multi-functional dry powder blender, mix and blend 5-15 minute, the thermal insulation mortar masterbatch being uniformly mixed, during use, masterbatch is put in mortar mixer, mix and blend 2-5 minute after adding water, blender rotating speed 60-80 rev/min, put into EPS granule again, blender rotating speed 60-80 rev/min, stir 5-10 minute, obtain desulfurized gypsum base machine spray thermal insulation mortar.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108083753A (en) * 2018-01-12 2018-05-29 深圳摩盾环保新材料有限公司 A kind of gypsum base is without sand mold machine spray lightweight plastering material and preparation method thereof
US10100534B2 (en) * 2016-08-08 2018-10-16 Serendipity Technologies LLC. Mortar mixture and method of laying tiles employing the same
CN108774038A (en) * 2018-05-30 2018-11-09 贵州益新装配式新型建材有限公司 A kind of gypsum base exterior wall bottom putty and preparation method thereof
WO2019080527A1 (en) * 2017-10-23 2019-05-02 北新集团建材股份有限公司 Gypsum-based mechanical spraying plastering mortar, preparation method therefor, and gypsum-based mechanical spraying slurry
CN110343414A (en) * 2019-08-21 2019-10-18 江苏精恒新型材料科技有限公司 A kind of new waterproof powder of lacquer putty for use on and its processing method

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CN102060497A (en) * 2010-12-03 2011-05-18 上海英硕聚合物材料有限公司 Phase change composite heat-insulating mortar with desulfurization gypsum as main gelled material
CN102863197A (en) * 2012-09-13 2013-01-09 上海宇培特种建材有限公司 Desulfurization gypsum-based thermal insulation mortar and preparation method thereof
CN103739264A (en) * 2014-01-02 2014-04-23 同济大学 Hydrophobic desulfurization gypsum based EPS (Expandable Polystyrene) heat preservation mortar

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030025361A (en) * 2001-09-20 2003-03-29 삼손퍼라이트 주식회사 Surface modified-expanded perlite and its usage
CN102060497A (en) * 2010-12-03 2011-05-18 上海英硕聚合物材料有限公司 Phase change composite heat-insulating mortar with desulfurization gypsum as main gelled material
CN102863197A (en) * 2012-09-13 2013-01-09 上海宇培特种建材有限公司 Desulfurization gypsum-based thermal insulation mortar and preparation method thereof
CN103739264A (en) * 2014-01-02 2014-04-23 同济大学 Hydrophobic desulfurization gypsum based EPS (Expandable Polystyrene) heat preservation mortar

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10100534B2 (en) * 2016-08-08 2018-10-16 Serendipity Technologies LLC. Mortar mixture and method of laying tiles employing the same
WO2019080527A1 (en) * 2017-10-23 2019-05-02 北新集团建材股份有限公司 Gypsum-based mechanical spraying plastering mortar, preparation method therefor, and gypsum-based mechanical spraying slurry
CN108083753A (en) * 2018-01-12 2018-05-29 深圳摩盾环保新材料有限公司 A kind of gypsum base is without sand mold machine spray lightweight plastering material and preparation method thereof
CN108774038A (en) * 2018-05-30 2018-11-09 贵州益新装配式新型建材有限公司 A kind of gypsum base exterior wall bottom putty and preparation method thereof
CN110343414A (en) * 2019-08-21 2019-10-18 江苏精恒新型材料科技有限公司 A kind of new waterproof powder of lacquer putty for use on and its processing method

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