CN105314933A - Heat-preserving mortar with low thermal conductivity - Google Patents
Heat-preserving mortar with low thermal conductivity Download PDFInfo
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- CN105314933A CN105314933A CN201410376599.9A CN201410376599A CN105314933A CN 105314933 A CN105314933 A CN 105314933A CN 201410376599 A CN201410376599 A CN 201410376599A CN 105314933 A CN105314933 A CN 105314933A
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Abstract
The invention discloses a heat-preserving mortar with low thermal conductivity, and a production process thereof. The heat-preserving mortar is composed of the following raw materials: 40 to 90% of cement or gypsum, 1 to 20% of aerogel particles, 0 to 4% of cement-modifying agent, 3 to 15% of fiber, 1 to 15% of polymer emulsion powder, 0.5 to 5% of cellulose ether, 0 to 2% of a highly-efficient water-reducing agent, 0 to 1% of an organic silicone hydrophobic agent, 1 to 8% of lignocellulosic polymer emulsion powder and 0 to 40% of other lightweight aggregates; and the mortar is prepared by uniformly mixing the above-mentioned raw materials under complete stirring successively through three stages of stirring process. The heat-preserving mortar provided by the invention uses aerogel as a lightweight aggregate, so thermal conductivity of the mortar is greatly reduced; meanwhile, the adoption of the three-stage stirring process improves mixing uniformity of additives, enables fiber to be completely and uniformly mixed, reduces delivery distance of a fiber mixture and decreases damage of the lightweight aggregates, thereby reducing blockage and improving efficiency.
Description
Technical field
The present invention relates to building material technical field, specifically a kind of low heat conductivity heat-insulating mortar.
Background technology
Inorganic heat insulation mortar refers to that the low density inorganic particle with insulation capacity is as aglite, adopt suitable gelling material and other multiple elements design admixtures, by a certain percentage, through certain technique formulated lagging material for building, directly can be applied in surface of wall, its more general plastering mortar has the functions such as quality is light, heat insulating.
In recent years, along with the development of China's building energy conservation cause, inorganic heat insulation mortar field there has also been larger development, particularly light-weight aggregate, also from traditional be mainly develop into performance preferably glass bead with pearlstone etc.But the thermal insulation mortar produced by these inorganic light-weight aggregates is compared with other organic heat preservation of board material, and thermal conductivity is still larger.China region is wide, and north-south climate situation differs greatly, in cold and severe cold area, higher to the requirement of building exterior wall heat preserving.Mineral-type thermal insulation mortar thermal insulation layer could be up to standard after only accomplishing certain thickness.But thickness increases, and the gross weight of whole heat insulation system increases thereupon, safety performance reduces, so the application of inorganic heat insulation mortar is still subject to certain restriction.
But inorganic heat insulation mortar is owing to having excellent fire protection flame retarding safety performance; Material resources chemical stability is good; Weathering resistance is fabulous, can the life-span same with buildings, environmental protection; Easy construction, the advantages such as price is lower.It is one of kind of receiving much concern of building heat preservation market always.In recent years, many experts, scholar's research inorganic heat insulation mortar each component, on the impact of heat-insulating property, improved its performance index.In heat insulating, thermal conductivity is the important indicator of lagging material, and the light-weight aggregate therefore chosen becomes the important channel of improving conventional vacuum mortar.
In addition, conventional thermal insulation mortar produces the general production technique adopting single stirrer to feed intake in due order.The advantage of this production technique is less investment, and shortcoming is that product stability is poor, and efficiency is lower, and light-weight aggregate breakage rate is high.
Summary of the invention
The object of the present invention is to provide a kind of low heat conductivity heat-insulating mortar, it adopts aerogel particle as light-weight aggregate, effectively raise the heat-insulating property of product, the gelatinous material of aerogel material to be a kind of dispersion medium be gas, mutually build up by colloidal particle or high-polymer molecular a kind of nanoporous solid material with network structure formed, the size of this material mesoporosity is in nanometer scale, its voidage is up to 80 ~ 99.8%, the typical sizes of hole is 1 ~ 100nm, and density can reach 3kg/m
3, room temperature thermal conductivity lowly can reach 0.011 ~ 0.016w/(mk), to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A kind of low heat conductivity heat-insulating mortar, is made up of the raw material of following mass percent: cement or gypsum 40 ~ 90%, aerogel particle 1 ~ 20%, cement modifier 0 ~ 4%, fiber 3 ~ 15%, polymer glue powder 1 ~ 15%, ether of cellulose 0.5 ~ 5%, high efficiency water reducing agent 0 ~ 2%, organosilicon moisture repellent 0 ~ 1%, wood fibre polymer glue powder 1 ~ 8%, other light-weight aggregates 0 ~ 40%.
As the further scheme of the present invention: other light-weight aggregates described are vitrifying microballon, perlite or ceramic grain.
A kind of production technique of low heat conductivity heat-insulating mortar, concrete steps are as follows: aerogel particle, cement modifier, polymer glue powder, ether of cellulose, high efficiency water reducing agent, organosilicon moisture repellent, wood fibre polymer glue powder add in cement or gypsum and carry out pre-mixing by (1), then add two spiral ribbon mixer and stir 3 ~ 5min, fully to mix; (2) mixture is inputted in forced action type agravic blender, and add fiber and mix, stir 3 ~ 5min; (3) finally secondary mixture is inputted in light-weight aggregate special-purpose stirring machine, add light-weight aggregate and mix, stir 2 ~ 3min.
Compared with prior art, the invention has the beneficial effects as follows: the present invention adopts aerogel to greatly reduce the thermal conductivity of material as light-weight aggregate, and adopt three grades of mix and blend techniques, (1) improves the mixture homogeneity of additive; (2) fiber is fully mixed, and reduce the fed distance of fibre blend, thus reduce blocking, raise the efficiency; (3) adopt special-purpose stirring machine mixing, namely shorten the churning time of light-weight aggregate, reduce the breakage of light-weight aggregate, thermal insulation mortar can be made again fully to stir evenly.
Embodiment
Below in conjunction with the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
A kind of low heat conductivity heat-insulating mortar, is made up of the raw material of following mass percent: cement 65%, aerogel particle 10%, cement modifier 2%, fiber 5%, polymer glue powder 3%, ether of cellulose 1%, high efficiency water reducing agent 1%, organosilicon moisture repellent 0.5%, wood fibre polymer glue powder 2.5%, vitrifying microballon light-weight aggregate 10%.
Embodiment 2
A kind of low heat conductivity heat-insulating mortar, is made up of the raw material of following mass percent: gypsum 60%, aerogel particle 8%, fiber 5%, polymer glue powder 2%, ether of cellulose 2%, organosilicon moisture repellent 1%, wood fibre polymer glue powder 2%, vitrifying microballon light-weight aggregate 20%.
Embodiment 3
A kind of low heat conductivity heat-insulating mortar, is made up of the raw material of following mass percent: gypsum 63%, aerogel particle 15%, fiber 5%, polymer glue powder 3%, ether of cellulose 3%, organosilicon moisture repellent 1%, wood fibre polymer glue powder 2%, vitrifying microballon light-weight aggregate 8%.
In above-described embodiment, cement or gypsum as gelling material, when gelatinous material use gypsum time, inapplicable cement modifier and high efficiency water reducing agent; The light skeletal of material thermal conductivity is reduced during aerogel particle, cement modifier plays a part to improve strength of cement and flexibility, fiber plays cracking resistance, and polymer glue powder can improve intensity and the force of cohesion of material, and ether of cellulose plays water retention and can improve the workability of material; High efficiency water reducing agent can improve the intensity of cement, and organosilicon moisture repellent plays hydrophobic effect, and wood fibre polymer glue powder plays the workability effect improving material, and vitrifying microballon light-weight aggregate is as low heat conductive filler.
In above-described embodiment, the production technique of low heat conductivity heat-insulating mortar, concrete steps are as follows: aerogel particle, cement modifier, polymer glue powder, ether of cellulose, high efficiency water reducing agent, organosilicon moisture repellent, wood fibre polymer glue powder add in cement and carry out pre-mixing by (1), then add two spiral ribbon mixer and stir 5min, fully to mix; (2) mixture is inputted in forced action type agravic blender, and add fiber and mix, stir 5min; (3) finally secondary mixture is inputted in light-weight aggregate special-purpose stirring machine, add light-weight aggregate and mix, stir 3min.
Introduce the thermal conductivity that aerogel greatly reduces material, because aerogel room temperature thermal conductivity lowly can reach 0.011-0.016w/(mk), therefore along with the increase of aerogel volume in thermal insulation mortar, the thermal conductivity of thermal insulation mortar is by original 0.07w/(mk) can 0.03w/(mk be reduced to) below, reach the building heat preservation requirement of the northern area of China completely.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.
Claims (3)
1. a low heat conductivity heat-insulating mortar, it is characterized in that, be made up of the raw material of following mass percent: cement or gypsum 40 ~ 90%, aerogel particle 1 ~ 20%, cement modifier 0 ~ 4%, fiber 3 ~ 15%, polymer glue powder 1 ~ 15%, ether of cellulose 0.5 ~ 5%, high efficiency water reducing agent 0 ~ 2%, organosilicon moisture repellent 0 ~ 1%, wood fibre polymer glue powder 1 ~ 8%, other light-weight aggregates 0 ~ 40%.
2. low heat conductivity heat-insulating mortar according to claim 1, is characterized in that, other light-weight aggregates described are vitrifying microballon, perlite or ceramic grain.
3. the production technique of a low heat conductivity heat-insulating mortar as claimed in claim 1, it is characterized in that, concrete steps are as follows: aerogel particle, cement modifier, polymer glue powder, ether of cellulose, high efficiency water reducing agent, organosilicon moisture repellent, wood fibre polymer glue powder add in cement or gypsum and carry out pre-mixing by (1), then add two spiral ribbon mixer and stir 3 ~ 5min, fully to mix; (2) mixture is inputted in forced action type agravic blender, and add fiber and mix, stir 3 ~ 5min; (3) finally secondary mixture is inputted in light-weight aggregate special-purpose stirring machine, add light-weight aggregate and mix, stir 2 ~ 3min.
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| CN201410376599.9A CN105314933B (en) | 2014-08-04 | 2014-08-04 | A kind of low heat conductivity heat-insulating mortar |
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| CN201410376599.9A CN105314933B (en) | 2014-08-04 | 2014-08-04 | A kind of low heat conductivity heat-insulating mortar |
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| CN105314933A true CN105314933A (en) | 2016-02-10 |
| CN105314933B CN105314933B (en) | 2017-07-18 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630893A (en) * | 2016-12-01 | 2017-05-10 | 湖北硅金凝节能减排科技有限公司 | Aerogel thermal-insulation board and preparation method thereof |
| CN108285302A (en) * | 2018-01-11 | 2018-07-17 | 柳州市天开企业管理有限公司 | A kind of construction material |
| CN109053098A (en) * | 2018-11-01 | 2018-12-21 | 董佑军 | A kind of high-efficiency compound environment-protection building thermal insulation material |
| CN109721319A (en) * | 2019-01-23 | 2019-05-07 | 合肥中地节能科技有限公司 | A kind of dry powder type wall heat-insulating material and preparation method thereof |
| CN111499313A (en) * | 2020-05-28 | 2020-08-07 | 贵州航天建设工程有限公司 | Cement-based aerogel heat-insulation plate and preparation method thereof |
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| CN101062859A (en) * | 2007-06-11 | 2007-10-31 | 赵云龙 | Wall heat-insulating rubber powder material and preparation method and using method thereof |
| CN102424538A (en) * | 2011-08-31 | 2012-04-25 | 武汉帅麟科技有限公司 | Building insulating mortar containing nano-silica aerogel |
| CN102535787A (en) * | 2012-01-16 | 2012-07-04 | 上海英硕聚合材料股份有限公司 | Heat-insulation and decorative integral plate and manufacturing method thereof |
| CN103043983A (en) * | 2012-12-26 | 2013-04-17 | 青岛科瑞新型环保材料有限公司 | Vitrified microbead heat-preserving mortar |
| CN103172314A (en) * | 2013-03-28 | 2013-06-26 | 海达建设集团有限公司 | Polycrystal inorganic lightweight aggregate thermal insulation mortar |
| CN103408279A (en) * | 2013-07-26 | 2013-11-27 | 成都新柯力化工科技有限公司 | Thermal insulation aerogel material for buildings, and preparation method of aerogel material |
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2014
- 2014-08-04 CN CN201410376599.9A patent/CN105314933B/en active Active
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| CN101062859A (en) * | 2007-06-11 | 2007-10-31 | 赵云龙 | Wall heat-insulating rubber powder material and preparation method and using method thereof |
| CN102424538A (en) * | 2011-08-31 | 2012-04-25 | 武汉帅麟科技有限公司 | Building insulating mortar containing nano-silica aerogel |
| CN102535787A (en) * | 2012-01-16 | 2012-07-04 | 上海英硕聚合材料股份有限公司 | Heat-insulation and decorative integral plate and manufacturing method thereof |
| CN103043983A (en) * | 2012-12-26 | 2013-04-17 | 青岛科瑞新型环保材料有限公司 | Vitrified microbead heat-preserving mortar |
| CN103172314A (en) * | 2013-03-28 | 2013-06-26 | 海达建设集团有限公司 | Polycrystal inorganic lightweight aggregate thermal insulation mortar |
| CN103408279A (en) * | 2013-07-26 | 2013-11-27 | 成都新柯力化工科技有限公司 | Thermal insulation aerogel material for buildings, and preparation method of aerogel material |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630893A (en) * | 2016-12-01 | 2017-05-10 | 湖北硅金凝节能减排科技有限公司 | Aerogel thermal-insulation board and preparation method thereof |
| CN108285302A (en) * | 2018-01-11 | 2018-07-17 | 柳州市天开企业管理有限公司 | A kind of construction material |
| CN109053098A (en) * | 2018-11-01 | 2018-12-21 | 董佑军 | A kind of high-efficiency compound environment-protection building thermal insulation material |
| CN109721319A (en) * | 2019-01-23 | 2019-05-07 | 合肥中地节能科技有限公司 | A kind of dry powder type wall heat-insulating material and preparation method thereof |
| CN111499313A (en) * | 2020-05-28 | 2020-08-07 | 贵州航天建设工程有限公司 | Cement-based aerogel heat-insulation plate and preparation method thereof |
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| Publication number | Publication date |
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| CN105314933B (en) | 2017-07-18 |
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