CN104973840A - Fireproofing bonding mortar and preparation method and application thereof - Google Patents
Fireproofing bonding mortar and preparation method and application thereof Download PDFInfo
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- CN104973840A CN104973840A CN201510396667.2A CN201510396667A CN104973840A CN 104973840 A CN104973840 A CN 104973840A CN 201510396667 A CN201510396667 A CN 201510396667A CN 104973840 A CN104973840 A CN 104973840A
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Abstract
Fireproofing bonding mortar is composed of the following components in parts by weight: 385-420 parts by mass of 420R ordinary portland cement, 470-510 parts by mass of dried sand, 11-13 parts by mass of a defoaming agent, 8-12 parts by mass of a water reducing agent, 50-100 parts by mass of heavy calcium carbonate, 3-6 parts by mass of hydroxypropyl methyl cellulose, 12-15 parts by mass of a redispersible latex powder, and 25-36 parts by mass of a fireproofing powder. Through suitable proportion of all the components, the fireproofing binding mortar achieves good synergistic effect, and has good flame retardancy while having good bonding strength.
Description
Technical field
The present invention relates to a kind of fireproof bonding mortar, belong to matrix material for building, particularly play bonding expansion polyphenyl plate and matrix metope or and putty between the exterior wall adhesive mortar that acts on.
Background technology
Along with the develop rapidly of economy and improving constantly of the level of urbanization, Highrise buildings gets more and more, particularly key city and periphery thereof.The appearance of these Highrise buildingss, brings life and vigor to the development in city and prosperity, but also brings difficulty and crisis to fire-fighting work.For this reason, people have developed Building Fire Protection sheet material and architectural fireproof paint.Architectural fireproof paint itself is not so or difficult combustion, does not play fire retardation, its fire prevention principle be coating can make ground and fire screen from, thus extend heat and invade ground, time (what namely postpone and suppress flame spreads effect) required for arrival ground opposite side.Time on fire, this frie retardant coating be sprayed at the flammable substrate surface of building slab, make it be protected in a fire, thus the loss reducing or avoid fire to cause.
Adhesive mortar is evenly formed through mechanically mixing by cement, quartz sand, polymer bonding material and multiple additives, is the binding agent being mainly used in bonding warming plate.It adopts cement, filler is composited through Particular craft, and good water-retaining property, cohesive strength is high.Adhesive mortar has following advantage: all have stronger cohesive action to the warming plate such as base course wall and styrofoam; Water-fast, resistance toly to freeze, ageing-resistant performance is good; Easy construction is a kind of very safe heat-insulation system matrix material; Sliding pendant in construction process, has excellent weather-proof, shock resistance and resistance to cleavage.But the adhesive mortar used in the market does not have fire line or fire resistance is not good, there is certain potential safety hazard.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of fireproof bonding mortar, this fireproof bonding mortar not only has good cohesive strength, also has good flame retardant resistance.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of fireproof bonding mortar, is made up of the component of following weight part: the 425R ordinary Portland cement of 385-420 mass parts, the oven dry sand of 470-510 mass parts, the defoamer of 11-13 mass parts, the water reducer of 8-12 mass parts, the SILICA FUME of 6-9 mass parts, the water-ground limestone of 50-100 mass parts, the Vltra tears of 3-6 mass parts, the redispersable latex powder of 12-15 mass parts, the fire prevention powder of 25-36 mass parts.
Further, described adhesive mortar is made up of the component of following weight part: the 425R ordinary Portland cement of 400 mass parts, the oven dry sand of 500 mass parts, the defoamer of 12 mass parts, the water reducer of 10 mass parts, the SILICA FUME of 8 mass parts, the water-ground limestone of 80 mass parts, the Vltra tears of 4.5 mass parts, the redispersable latex powder of 13.5 mass parts, the fire prevention powder of 32 mass parts.
Described defoamer is also called foam killer or kilfoam, can produce many unwanted bubbles in Industrial processes, needs to add defoamer.Defoamer can reduce surface tension, suppress foam to produce or eliminate to produce foam.Described water reducer refers to and is keeping, under the condition that mortar is substantially identical, can reducing the additive of mixing water amount.Water reducer is generally a kind of tensio-active agent, belongs to aniorfic surfactant, can be adsorbed in mortar particle surface, has the effect of diminishing and raising mortar strength.
Described water-ground limestone adopts mechanical means directly pulverize natural calcite, Wingdale, chalk, shell etc. and obtain.Because its settling volume (1.1-1.9mL/g) is less than the light calcium carbonate settling volume (2.4-2.8mL/g) chemically produced, be therefore called as water-ground limestone.In formula of the present invention, coarse whiting, as stopping composition, plays a part to reduce production cost, the toughness increasing product and intensity.
Described redispersable latex powder is the powder of the spray-dried rear formation of polymer emulsion, also claims dry powder glue.This powder can be reduced into emulsion rapidly after contact with water, and keeps the character identical with initial latex, and namely after moisture evaporation, this film has high-flexibility, high-weatherability and the high-adhesion to various base material.In formula of the present invention, redispersable latex powder plays following effect: be added in 7-10 days film forming in cement, body of wall and mortar clenched, prevents mortar from ftractureing time uneven in temperature; Adhesive property and the cohesion of material can be improved; Reduce shaping Young's modulus; The elasticity of strongthener and flexural strength; Improve shock-resistance and the weathering resistance of material; Reduce the water-absorbent of material and improve the water-retentivity of use procedure.
Described SILICA FUME is also silicon ash or poly-silicon ash, be iron alloy when smelting duriron and industrial silicon (Pure Silicon Metal), what produce in ore-smelting furnace has beaten the very strong SiO of volatility
2precipitate with air rapid oxidation condensation after discharge with Si gas.In the concrete of cement based, mortar and refractory material casting material, mix appropriate SILICA FUME, can function as follows: significantly improve resistance to compression, anti-folding, impervious, anticorrosion, shock resistance and wear resisting property; Have water conservation, prevent segregation, bleeding, significantly reduce the effect of concrete pumping resistance; In the work-ing life of significant prolongation concrete, particularly under the severe environment such as villiaumite system erosion, sulphate attack, high humidity, the weather resistance of concrete can be made to double even several times; Significantly reduce the ash that lands of jetting cement and mould material, improve single jetting thickness; The necessary composition of High Strength Concrete, the engineer applied of existing C150 concrete; Have effect of about 5 times of cement, in ordinary concrete and Low Cement Castable, application can reduce costs, improve weather resistance; Effectively prevent concrete alkali-aggregate reaction; Improve the compactness of casting type refractory materials, with Al
2o
3and when depositing, more easily generate mullite phase, make its hot strength, shaking property of heat resistanceheat resistant strengthens; There is extremely strong volcano ash effect, during mixed concrete, can with hydrolysis product of cement Ca (OH)
2secondary reaction of hydration occurs, and form gelled product, filling concrete stone structure, improves the microtexture of slurry, improves mechanical property and the weather resistance of hardenite; SILICA FUME is unformed spherical particle, can improve concrete rheological property; The average particle size particle size of SILICA FUME is smaller, has good filling effect, can be filled between cement granules space, improves concrete strength and weather resistance.
Further, described specification of drying sand is 70-140 order.Described oven dry sand can form stronger bonding force with cement slurry, strengthens anti-folding, the ultimate compression strength of slurry, is conducive to the raising of polystyrene granule insulating mortar bulk strength.
Further, the viscosity of described Vltra tears is 200,000 mPas.Described Vltra tears, has another name called hypromellose, HPMC, and English abbreviation is HPMC.Be select the gossypin of high purity as raw material, obtain through special etherificate in the basic conditions.Vltra tears makes mortar have pumping as the water-holding agent of sand-cement slurry, retardant.At slurry of plastering, gypsum material, putty powder or other building materials as tamanori, smear can be improved and extend operable time.As sticking brick, marble, decorative plastic, paste toughener, can also cement consumption be reduced.The water retention property of HPMC makes slurry because of so dry that to chap too soon, can not strengthen the rear intensity of sclerosis after smearing.
Further, described fire prevention powder is inorganic additive flame retardant.Further, the main component of described inorganic additive flame retardant is magnesium hydroxide or aluminium hydroxide.Described fire prevention powder and fire retardant, be the functional aid can giving polymkeric substance flame retardancy, can be divided into additive flame retardant and reactive flame retardant according to using method.Additive flame retardant joins in polymkeric substance by mechanical mix techniques, makes polymkeric substance have flame retardant resistance.Current additive flame retardant mainly contains organic fire-retardant and inorganic combustion inhibitor.Some fire retardants that organic fire-retardant is is representative with bromine system, phosphorus nitrogen system and red phosphorus and compound, inorganic combustion inhibitor is the flame-retardant system such as antimonous oxide, magnesium hydroxide, aluminium hydroxide, silicon system mainly.
The preparation of described fireproof bonding mortar comprises the following steps:
A, to weigh by raw material ratio, then starting material are inserted in feed bin, carry out mixing and continuously stirring, stirred;
B, mixture obtained for steps A and water are stirred 6-9 minute uniformly pulpous state according to proportion by weight 1:0.15-1:0.3 in stirrer, for the fireproof bonding mortar of building operation.
Further, in described step B, the proportion by weight of mixture and water is 1:0.25.
The present invention also aims to provide the application of described fireproof bonding mortar in fire protection coating, this fireproof bonding mortar is used for exterior-wall heat insulation adhesive board.This fireproof bonding mortar, while having good cohesive strength, also has good flame retardant resistance.
Advantageous Effects of the present invention is:
Fireproof bonding mortar of the present invention, reaches good synergy by the proportioning that each component is suitable, meet there is good cohesive strength while, also show good flame retardant resistance.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearly, below embodiments of the invention are described in detail.
embodiment 1
A kind of fireproof bonding mortar, composed of the following components: the SILICA FUME of the defoamer of the 425R ordinary Portland cement of 385 mass parts, the oven dry sand of 470 mass parts, 11 mass parts, the water reducer of 8 mass parts, 6 mass parts, the water-ground limestone of 50 mass parts, the Vltra tears of 3 mass parts, the redispersable latex powder of 12 mass parts, the fire prevention powder composition of 25 mass parts.
Described fireproof bonding mortar is concrete preparation method comprise the following steps:
A, to weigh by raw material ratio, then starting material are inserted in feed bin, carry out mixing and continuously stirring, stirred;
B, mixture obtained for steps A and water are stirred 6 minutes uniformly pulpous states according to proportion by weight 1:0.15 in stirrer, for the fireproof bonding mortar of building operation.
embodiment 2
A kind of fireproof bonding mortar, composed of the following components: the 425R ordinary Portland cement of 420 mass parts, the oven dry sand of 510 mass parts, the defoamer of 11 mass parts, the water reducer of 8 mass parts, the SILICA FUME of 9 mass parts, the water-ground limestone of 100 mass parts, the Vltra tears of 6 mass parts, the redispersable latex powder of 15 mass parts, the fire prevention powder of 36 mass parts.
Described fireproof bonding mortar is concrete preparation method comprise the following steps:
A, to weigh by raw material ratio, then starting material are inserted in feed bin, carry out mixing and continuously stirring, stirred;
B, mixture obtained for steps A and water are stirred 9 minutes uniformly pulpous states according to proportion by weight 1:0.3 in stirrer, for the fireproof bonding mortar of building operation.
embodiment 3
A kind of fireproof bonding mortar, composed of the following components: the 425R ordinary Portland cement of 400 mass parts, the oven dry sand of 500 mass parts, the defoamer of 12 mass parts, the water reducer of 10 mass parts, the SILICA FUME of 8 mass parts, the water-ground limestone of 80 mass parts, the Vltra tears of 4.5 mass parts, the redispersable latex powder of 13.5 mass parts, the fire prevention powder of 32 mass parts.
Described fireproof bonding mortar is concrete preparation method comprise the following steps:
A, to weigh by raw material ratio, then starting material are inserted in feed bin, carry out mixing and continuously stirring, stirred;
B, mixture obtained for steps A and water are stirred 8 minutes uniformly pulpous states according to proportion by weight 1:0.25 in stirrer, for the fireproof bonding mortar of building operation.
embodiment 4
The ether of cellulose of the lignocellulose of the trimeric cyanamide analog high efficiency water reducing agent of the quartz sand of the ordinary Portland cement of 100 mass parts, 150 mass parts, 2 mass parts, 0.5 mass parts, 2 mass parts, the acrylate copolymer of 15 mass parts are mixed and made into adhesive mortar slip.During use, separately add the water of 420 mass parts, fully stir, adhesive mortar.
embodiment 5
The thixotropic lubricant of the polymer bonding material of the fine aggregate of the binding material of 30 mass parts, 30 mass parts, 2 mass parts, 0.1 mass parts, the accelerating chemicals of 0.008 mass parts are joined in stirrer, stirs 3 minutes.Be 1:0.1 mix and blend 5 minutes according to the quality proportioning of mixture and water, namely can be used for building operation.
embodiment 6the performance test of fireproof bonding mortar
The fireproof bonding mortar that embodiment 1-3 is obtained and embodiment 4(control group 1) and embodiment 5(control group 2) adhesive mortar that obtains carries out performance test, test result is as shown in the table:
Note: in upper table, cohesive strength, tensile bond strength (with sand-cement slurry), tensile bond strength (with expansion polyphenyl plate) are tested according to " building mortar fundamental property experimental technique JGJ70-2009 ", and total fuel value, burning net thermal value are tested according to " material of construction combustion heat value test method GBT14402-2007 ".
Above-mentioned cohesive strength, tensile bond strength (with sand-cement slurry), tensile bond strength (with expansion polyphenyl plate) are evaluate the index parameter of the adhesive mortar adhesive property prepared.From above-mentioned test result, the performance of the cohesive strength of fireproof bonding mortar prepared by the present invention, tensile bond strength (with sand-cement slurry), stretch-bonded mortar (with expansion polyphenyl plate) and control group 1(embodiment 4) close with control group 2(embodiment 5).Gross heat of combustion value, the burning net thermal value of fireproof bonding mortar prepared by the present invention are significantly less than control group 1(embodiment 4) and control group 2(embodiment 5), the performance of fireproof bonding mortar in flame retardant resistance that namely prepared by the present invention is obviously better than control group 1(embodiment 4) and control group 2(embodiment 5).Prove thus, fireproof bonding mortar prepared by the present invention, while having good adhesive property, has good flame retardant resistance.
In order to verify the flame resistance effect of obtained fireproof bonding mortar more intuitively, to the fireproof bonding mortar that embodiment 1-3 obtains, and the adhesive mortar (being respectively control group 1 and control group 2) that embodiment 4 and 5 obtains carries out flame retardant properties test.During test, in order to accelerate experiment process and speed, spread upon on warming plate by the adhesive mortar of acquisition, warming plate is placed after 5 days and is carried out flame retardant resistance test.During test, by bonded sand pulp layer and flame contact, temperature is 750 DEG C, and the test duration is 25s.Observe with or without burning, melting or dropping etc., test result is as follows:
From test result, the flame retardant resistance performance of fireproof bonding mortar of the present invention is obviously better than embodiment 4(control group 1) and 5(control group 2) adhesive mortar that obtains.Prove thus, the adhesive mortar that the present invention obtains, while having good cohesive strength, has good flame retardant resistance.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, those of ordinary skill in the art is to be understood that, can modify to technical scheme or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (9)
1. a fireproof bonding mortar, is made up of the component of following weight part: the 425R ordinary Portland cement of 385-420 mass parts, the oven dry sand of 470-510 mass parts, the defoamer of 11-13 mass parts, the water reducer of 8-12 mass parts, the SILICA FUME of 6-9 mass parts, the water-ground limestone of 50-100 mass parts, the Vltra tears of 3-6 mass parts, the redispersable latex powder of 12-15 mass parts, the fire prevention powder of 25-36 mass parts.
2. fireproof bonding mortar according to claim 1, is characterized in that: be made up of the component of following weight part: the 425R ordinary Portland cement of 400 mass parts, the oven dry sand of 500 mass parts, the defoamer of 12 mass parts, the water reducer of 10 mass parts, the SILICA FUME of 8 mass parts, the water-ground limestone of 80 mass parts, the Vltra tears of 4.5 mass parts, the redispersable latex powder of 13.5 mass parts, the fire prevention powder of 32 mass parts.
3. fireproof bonding mortar according to claim 1, is characterized in that: described specification of drying sand is 70-140 order.
4. fireproof bonding mortar according to claim 1, is characterized in that: the viscosity of described Vltra tears is 200,000 mPas.
5. fireproof bonding mortar according to claim 1, is characterized in that: described fire prevention powder is inorganic additive flame retardant.
6. fireproof bonding mortar according to claim 5, is characterized in that: the main component of described inorganic additive flame retardant is magnesium hydroxide or aluminium hydroxide.
7. prepare the method for fireproof bonding mortar as defined in claim 1, it is characterized in that: the preparation of described fireproof bonding mortar comprises the following steps:
A, to weigh by raw material ratio, then starting material are inserted in feed bin, carry out mixing and continuously stirring, stirred;
B, mixture obtained for steps A and water are stirred 6-9 minute uniformly pulpous state according to proportion by weight 1:0.15-1:0.3 in stirrer, for the fireproof bonding mortar of building operation.
8. method according to claim 7, is characterized in that: in described step B, the proportion by weight of mixture and water is 1:0.25.
9. the application of fireproof bonding mortar in fire protection coating as described in any one of claim 1 to 6.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106116389A (en) * | 2016-07-04 | 2016-11-16 | 德清扬泰建筑材料有限公司 | A kind of environment-friendly type water proof fire retardant dry powder and mortar and preparation method thereof |
| CN107399955A (en) * | 2017-08-07 | 2017-11-28 | 李建朝 | AB composite insulation boards and insulation board assembly |
| CN109129829A (en) * | 2018-09-03 | 2019-01-04 | 云南永峰环境工程有限公司 | A kind of silicon oxygen magnesium fire prevention board production technology |
| CN109836098A (en) * | 2019-03-14 | 2019-06-04 | 南通职业大学 | A kind of ground tile paving binding material, preparation method and application |
| CN110627455A (en) * | 2019-11-05 | 2019-12-31 | 厦门高辰新材料有限公司 | High-molecular beneficial daub and preparation method thereof |
| CN115109601A (en) * | 2022-06-30 | 2022-09-27 | 广东电网有限责任公司 | Environment-friendly flame retardant and preparation method and application thereof |
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| WO2014122085A1 (en) * | 2013-02-05 | 2014-08-14 | Promat Research and Technology Centre NV | Fire protection mortar |
| CN104402362A (en) * | 2014-11-20 | 2015-03-11 | 天津市欧陆建材有限公司 | Colored finish mortar based on inorganic gel system |
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| CN101786829A (en) * | 2010-01-29 | 2010-07-28 | 天津市金岸保温材料有限公司 | Fireproof interface mortar, preparation method and application thereof |
| CN102503285A (en) * | 2011-11-10 | 2012-06-20 | 南京工业大学 | Polymer modified early strength repair mortar and preparation method and application thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106116389A (en) * | 2016-07-04 | 2016-11-16 | 德清扬泰建筑材料有限公司 | A kind of environment-friendly type water proof fire retardant dry powder and mortar and preparation method thereof |
| CN107399955A (en) * | 2017-08-07 | 2017-11-28 | 李建朝 | AB composite insulation boards and insulation board assembly |
| CN107399955B (en) * | 2017-08-07 | 2020-08-18 | 李建朝 | AB composite insulation board and insulation board assembly |
| CN109129829A (en) * | 2018-09-03 | 2019-01-04 | 云南永峰环境工程有限公司 | A kind of silicon oxygen magnesium fire prevention board production technology |
| CN109836098A (en) * | 2019-03-14 | 2019-06-04 | 南通职业大学 | A kind of ground tile paving binding material, preparation method and application |
| CN110627455A (en) * | 2019-11-05 | 2019-12-31 | 厦门高辰新材料有限公司 | High-molecular beneficial daub and preparation method thereof |
| CN115109601A (en) * | 2022-06-30 | 2022-09-27 | 广东电网有限责任公司 | Environment-friendly flame retardant and preparation method and application thereof |
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