CN102503320B - Decoration mortar with low efflorescence - Google Patents
Decoration mortar with low efflorescence Download PDFInfo
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- CN102503320B CN102503320B CN 201110325362 CN201110325362A CN102503320B CN 102503320 B CN102503320 B CN 102503320B CN 201110325362 CN201110325362 CN 201110325362 CN 201110325362 A CN201110325362 A CN 201110325362A CN 102503320 B CN102503320 B CN 102503320B
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Abstract
The invention discloses decoration mortar with low efflorescence. The decoration mortar comprises the following components in percentage by weight: 10 to 25 percent of high-aluminum cement, 1.0 to 10 percent of styrene-acrylic latex powder, 0.5 to 1.7 percent of superfine aluminum silicate, 0.1 to 0.9 percent of organic silicon water repellent, 0.15 to 0.5 percent of cellulose ether, 0.1 to 0.4 percent of powder antifoaming agent, 0.1 to 3.0 percent of pigment and 60 to 80 percent of filler. The decoration mortar has the advantages of high water resistance and color retention property, no efflorescence phenomenon and the like, can keep the characteristics of clear texture and natural color sense, and is more environment-friendly and energy-saving, a three-dimensional protection body layer is formed through synergistic effects of the components in a prescription, the problems of a high water absorption rate, efflorescence, a low color retention property and the like of the traditional decoration mortar are radically solved, and mat coat protection treatment is not required to be performed additionally.
Description
Technical field
The present invention relates to a kind of decoration mortar of the low accumulation of salt in the surface soil, belong to chemical field.
Background technology
Decoration mortar is a kind of mortar as building facing, and it is added with a certain amount of mineral color, is to obtain special facing form through various processing treatment when wiping one's face, to satisfy a kind of surface decoration of aesthetic needs.
The traditional decoration mortar is with a long history, is widely used, and it mainly is comprised of ordinary Portland cement, filler, ether of cellulose auxiliary agent etc.Because contain a large amount of ordinary Portland cements in the traditional decoration mortar; and ordinary Portland cement itself has excellent cohesive strength, weather resistance and weathering resistance; decoration mortar can also be mixed colours with mineral dye in addition; decoration mortar after toning is through using various service tools can create colourful decorative effect; therefore decoration mortar is widely used in skin, and External Wall basic unit plays a very good protection and decorative effect.
The traditional decoration mortar is a kind of take cement based as main inorganic materials, therefore also certainly exists the intrinsic shortcoming of cement-based material itself,, the easy accumulation of salt in the surface soil low such as tensile strength, poor flexibility, easily produces the problem such as shrinkability.
The traditional decoration mortar is as binding agent with ordinary Portland cement, because ordinary Portland cement alkalescence is strong, can react when running into water and generate water soluble alkali (or salt) material, salt in decoration mortar is taken out of by water and is deposited in the decoration mortar surface, and the materials such as the calcium hydroxide in decoration mortar, sodium, potassium also can be take water as the carrier stripping simultaneously.After arriving the decoration mortar surface, along with water evaporates, these materials can remain in the decoration mortar surface, form the white powder crystal; Perhaps with the Carbon Dioxide in Air reaction, form white lump at the decoration mortar surface crystallization.The decoration mortar accumulation of salt in the surface soil forms like this, and the decoration mortar surface of white powder crystallization after toning had a strong impact on outer wall decorative effect.
In order to reduce the situation of the decoration mortar accumulation of salt in the surface soil, often by adding the polymer dispersion powder that certain cohesive force can be provided to reduce the consumption of ordinary Portland cement in formula, and the water tolerance of this decoration mortar largely is limited by the water-resistant capacity of latex powder.Yet the vinyl acetate-ethylene that tradition adopts can disperse rubber powder to have the shortcomings such as poor water resistance, meets water meeting partial melting, comes off.Use vinyl acetate-ethylene can disperse the decoration mortar of rubber powder can show the situation of poor durability in exterior wall uses.
The common problem of traditional decoration mortar another one is exactly that the decoration mortar water-intake rate is high.The traditional decoration mortar is because exist a large amount of ordinary Portland cements, and the degree of compactness of Portland cement is poor, has a large amount of kapillaries in mortar, and water is transported to decoration mortar inside through kapillary.After traditional decoration mortar water-intake rate height can cause decoration mortar to be subject to the long-term invasion and attack of rainwater, decoration mortar was partially slow time of coagulation, can reduce thus decoration mortar to the protection of concrete base layer, and the decoration mortar weather resistance also can reduce simultaneously.
In addition, traditional decoration mortar color in life-time service can slowly shoal, turn white.Major cause has three aspects:: the one, and drenching with rain for a long time slowly fades pigment with solar radiation; The 2nd, in decoration mortar, cement is alkaline high, pigment is produced corrode; The 3rd, the white crystal that produces because of the accumulation of salt in the surface soil moves to mortar surface coverage pigment intrinsic colour, and the decoration mortar color is shoaled.
For these reasons, the traditional decoration mortar is subject to certain restriction in the use of exterior wall.For this reason, need a kind of finishing mortar of improved formulations, the defective that exists to overcome the traditional decoration mortar.
Summary of the invention
The decoration mortar that the purpose of this invention is to provide a kind of low accumulation of salt in the surface soil, the existing water-intake rate of traditional decoration mortar is high to solve, the accumulation of salt in the surface soil, the poor problem of tint retention.
Technical solution of the present invention is: a kind of decoration mortar of the low accumulation of salt in the surface soil counts by weight percentage and comprises following component:
High-alumina cement 10%～25%;
Styrene-acrylic latex powder 1.0%～10%;
Superfine alumina silicate 0.5%～1.7%;
Organosilicon moisture repellent 0.1%～0.9%;
Ether of cellulose 0.15%～0.5%;
Powder defoamer 0.1%～0.4%;
Pigment 0.1%～3.0%;
Filler 60%～80%.
Described high-alumina cement is Al
2O
3The aluminate cement of content 〉=40% (mass ratio) belongs to inorganic cementitious material.High-alumina cement has that alkalescence is low, rate of set is fast, early strength is high, after aquation without characteristics such as calcium hydroxide generations, the advantage that also possesses simultaneously traditional cement weather resistance and good weatherability, be the good substitute of traditional portland, can significantly reduce the accumulation of salt in the surface soil situation of decoration mortar.
Described styrene-acrylic latex powder is organic binding material, is based on phenylethylene ethylene/propenoic acid ester copolymer and acrylate polymer emulsion, the redispersable latex powder of spray-dried technology preparation.This styrene-acrylic latex powder has stronger viscosifying power and water resistance, can form fast the splendid paint film of water tolerance.
Described superfine alumina silicate is the pure aluminium silicate of particle diameter≤3 μ m, wherein Al
2O
3Content 〉=11% (mass ratio), SiO
2Content 〉=50% (mass ratio), Na
2O content＜1% (mass ratio).Superfine alumina silicate has slightly acidic, and its pH value is in 6.0 left and right, and a small amount of alkaline salt that high-alumina cement is produced in hydration reaction has certain mitigation, plays the effect of buffer reagent in decoration mortar, can further reduce the possibility of the decoration mortar accumulation of salt in the surface soil.And in above-mentioned specification of quality, SiO
2Content improves, and the weathering resistance of prepared decoration mortar is better; And with Na
2The content of O is controlled at 1% once, can guarantee the slightly acidic of superfine alumina silicate.
Described organosilicon moisture repellent is the type siloxane organosilicon moisture repellent, wherein, and the content of siloxanes 〉=50% (mass ratio).This organosilicon moisture repellent is a kind of polymer, three-dimensional netted water-resisting agent, can be combined in the mineral substrates surface by chemical bonded refractory, form stable, ageing-resistant three-dimensional silica resin reticulated structure, this reticulated structure can be attached to capillary wall and not stop up kapillary, thereby form not only hydrophobic but also ventilative characteristic, can prevent rainwater intrusion decoration mortar, can not damage again the venting capability of decoration mortar.
Described ether of cellulose is methylhydroxypropylcellulose ether.Add ether of cellulose can strengthen the water-retentivity of decoration mortar, prevent the phenomenon of the too fast drying of decoration mortar and sclerosis cracking, and can improve the plasticity-of application property and increase decoration mortar.
Described powder defoamer is nonionic surface active agent, can carry out to the microvesicle that decoration mortar produces deaeration and process in construction, improves the degree of compactness of decoration mortar, thereby obtains higher cohesive strength.
Further, it is 0.05%～0.1% mould inhibitor that decoration mortar of the present invention also is added with weight percent, for the mould that suppresses to produce because of humid environment and algae etc., reducing mould and algae etc. to the evil of soaking of decoration mortar coating, thereby effectively guarantee the ornamental and weather resistance of decoration mortar.
Compared with prior art, decoration mortar of the present invention has excellent water tolerance, good tint retention and the advantage such as accumulation of salt in the surface soil phenomenon can not occur.
Decoration mortar of the present invention adopts the high-alumina cement of low alkalinity as binding agent, and adds superfine alumina silicate as ealkaline buffer, can obviously reduce the alkalescence of decoration mortar; By adding styrene-acrylic latex powder and organosilicon moisture repellent; can be at the inside and outside formation protective membrane of decoration mortar; on the basis of the venting capability that does not damage decoration mortar; improve its hydrophobic and water resistance; can effectively reduce rainwater to the invasion of decoration mortar and the formation of rainprint; thereby also improved the unfading of decoration mortar, and the weather resistance of decoration mortar and the performance of protection concrete base layer have been increased.In decoration mortar formula of the present invention; has mutual synergy between each composition; form stereoscopic protective body layer; solved fundamentally that traditional decoration mortar water-intake rate is high, the problem such as the accumulation of salt in the surface soil, tint retention are poor; need not additionally to do the cover conservation treatment; can make the speciality of decoration mortar reservation clean mark, color sensation nature, environmental protection and energy-conservation more.
Embodiment
The present invention is further detailed explanation below by specific embodiment.
Formula according to table 1 takes respectively each component, each component is mixed namely obtain decoration mortar of the present invention.
Table 1
| Raw material | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| High-alumina cement | 16.0kg | 16.0kg | 13.0kg | 10.7kg | 10.7kg |
| The styrene-acrylic latex powder | 2.0kg | 2.0kg | 2.3kg | 6.0kg | 10.0kg |
| Superfine alumina silicate | ------ | 1.0kg | 1.7kg | 1.5kg | 1.5kg |
| Organosilicon moisture repellent | ------ | ------ | 0.8kg | 1.2kg | 1.0kg |
| Ether of cellulose | 0.3kg | 0.3kg | 0.25kg | 0.2kg | 0.2kg |
| The powder defoamer | ------ | 0.2kg | 0.2kg | 0.2kg | 0.2kg |
| Iron oxide black (pigment) | 1.5kg | 1.5kg | 1.65kg | 1.5kg | 1.7kg |
| Mould inhibitor | ------ | 0.05kg | 0.1kg | 0.1kg | 0.1kg |
| Building stones (filler) | 80.2kg | 78.95kg | 80.0kg | 78.6kg | 74.6kg |
| Add up to | 100kg | 100kg | 100kg | 100kg | 100kg |
According to the standard-required of JC/T1024-2007 wall facing mortar, the decoration mortar that embodiment 1 to 5 is respectively made detects.Result is as shown in table 2:
Table 2
The accumulation of salt in the surface soil of the decoration mortar of embodiment 2 has had obvious improvement than embodiment 1, and the module thickness of doing descends, and cohesive strength rises, and has illustrated that adding alkali burnout resistance and raising cohesive strength of superfine alumina silicate and powder defoamer is helpful.
The decoration mortar of embodiment 3 is tested out of doors 5 moonsets and accumulation of salt in the surface soil phenomenon occurred.By adding of organosilicon moisture repellent, water regain decreases drastically, and has solved simultaneously the accumulation of salt in the surface soil phenomenon that embodiment 1 and embodiment 2 exist, and this also shows that water regain has certain impact to the accumulation of salt in the surface soil.
According to the test result of embodiment 4 and embodiment 5, the addition that can see the styrene-acrylic latex powder has important impact to the improvement of water-absorbent, the accumulation of salt in the surface soil and cohesive strength.
Above-listed detailed description is that this embodiment limits the scope of the claims of the present invention for the illustrating of one of the present invention possible embodiments, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the scope of the claims of this case.
Claims (6)
1. the decoration mortar of a low accumulation of salt in the surface soil counts by weight percentage and comprises following component:
Wherein, described superfine alumina silicate is the pure aluminium silicate of particle diameter≤3 μ m, wherein Al
2O
3Content 〉=11%(mass ratio), SiO
2Content 〉=50%(mass ratio), Na
2O content＜1%(mass ratio).
2. decoration mortar according to claim 1, it is characterized in that: described high-alumina cement is Al
2O
3Content 〉=40%(mass ratio) aluminate cement.
3. decoration mortar according to claim 1, it is characterized in that: described organosilicon moisture repellent is the type siloxane organosilicon moisture repellent, content of siloxane wherein 〉=50%(mass ratio).
4. decoration mortar according to claim 1, it is characterized in that: described ether of cellulose is methylhydroxypropylcellulose ether.
5. decoration mortar according to claim 1, it is characterized in that: described powder defoamer is nonionic surface active agent.
6. decoration mortar according to claim 1 is characterized in that: it is 0.05%～0.1% mould inhibitor that described decoration mortar also is added with weight percent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110325362 CN102503320B (en) | 2011-10-24 | 2011-10-24 | Decoration mortar with low efflorescence |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110325362 CN102503320B (en) | 2011-10-24 | 2011-10-24 | Decoration mortar with low efflorescence |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446234A (en) * | 2014-11-11 | 2015-03-25 | 黄美忠 | Alkali-efflorescence-free high-waterproofness dry-powder tile joint mixture |
| CN104529343A (en) * | 2014-12-10 | 2015-04-22 | 国家电网公司 | Gatepost decoration material |
| CN105967610A (en) * | 2016-05-13 | 2016-09-28 | 吴肖颜 | Rapidly-hardened colorful waterproof mortar |
| CN106747491A (en) * | 2016-11-24 | 2017-05-31 | 山东科技大学 | A kind of external-wall heat-insulation material and preparation method thereof |
| CN109400055B (en) * | 2018-11-07 | 2021-07-30 | 华新水泥股份有限公司 | Exposed concrete surface hardening material and preparation method thereof |
| CN109384440A (en) * | 2018-12-29 | 2019-02-26 | 河南嘉方实业有限公司 | A kind of quick-dry type decoration mortar capable of releasing negative ion |
| CN113582630B (en) * | 2021-09-07 | 2022-05-27 | 河北金铎建设工程有限公司 | Thermal insulation wall body decorative layer dry material, mortar and wall body |
| CN114873969A (en) * | 2022-05-10 | 2022-08-09 | 北京建工资源循环利用投资有限公司 | Environment-friendly antique blue brick and production method thereof |
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| CN101519901A (en) * | 2009-03-16 | 2009-09-02 | 汕头经济特区龙湖科技有限公司 | External decorative mortar system and construction process thereof |
| CN101648797B (en) * | 2009-06-29 | 2013-02-20 | 上海东升新材料有限公司 | Self-leveling terrace powder mortar composition |
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