Background technology
External wall outer insulation is clearly promoted so far from country, external-wall heat-insulation material is multifarious, occurred blowout state, wherein sheet material (as polyurethane sheet, EPS plate, XPS plate etc.) and heat preservation slurry (inorganic heat preservation slurry, EPS granule thermal insulation slurry, inorganic-phase variable heat preservation slurry etc.) occuping market are dominated.Heat preservation slurry because of poor thermal insulation property, quality product cannot ensure, the easy factor such as cracking, its market position progressively replace by sheet material.
At present, the sheet material that market occurs has a variety of, mainly contains EPS plate, XPS plate, very golden plate, cement board, polyurethane sheet, foamed glass warming plate, exterior insulation, vacuumizes thermal insulation thermal insulation board and pearlite heat-insulation plate etc.From JG 149-2003 " expansion joints bellows external thermal insulation system " issuing and implementation, EPS plate thin plastering system obtains rapid promotion and application.After this, for the promotion and application of various sheet material, there are corresponding standard or specification to put into effect, but the binding agent of each sheet material and its performance index of plastering mortar and test method, substantially indiscriminately imitate the regulation of JG149-2003 to adhesive mortar and plastering mortar.The producer of all production adhesive mortars and plastering mortar is substantially all same product, is supplied in all plate systems, not for certain warming plate, develops special adhesive mortar and plastering mortar.The adhesive mortar developed according to JG 149-2003 and plastering mortar, can meet the requirement of most of heat preservation of board system, but some sheet material is because of the characteristic of self, needs adhesive mortar and plastering mortar to have certain function.Such as: pearlite heat-insulation plate and cement insulation board unit weight large (>=250kg/m3, EPS warming plate unit weight is at about 18kg/m3), conventional adhesive mortar easily causes warming plate to hang from above; Cement board belongs to porous material, its water-intake rate is high, easy water-swelling and cause warming plate cubic deformation, also easy because cement insulation board water suction too fast and cause the plastering mortar operating time short, the phenomenon such as surface strength is low, dry linting produces, and therefore should increase substantially than the performance requriements of conventional adhesive plastering mortar for its water-retentivity of bonding plastering mortar of cement insulation board and water-intake rate; Foamed glass warming plate because of alkali resistance poor, need adhesive mortar and plastering mortar to have the feature of low alkalinity, improve the weather resistance of heat-insulation system.
For the present situation of manufacturer and the characteristic of various sheet material, in conjunction with the performance requriements of JG 149-2003 " expansion joints bellows external thermal insulation system ", develop a kind of warming plate special low alkalinity bonding to wipe one's face integrated mortar, this warming plate comprises EPS plate, XPS plate, very golden plate, cement board, polyurethane sheet, foamed glass warming plate, exterior insulation, vacuumizes the various sheet material such as thermal insulation thermal insulation board, pearlite heat-insulation plate; This mortar had both been suitable for pasting of warming plate, can be used as plastering mortar simultaneously, for the protective treatment of warming plate top layer.
Summary of the invention
The object of this invention is to provide a kind of warming plate special low alkalinity bonding to wipe one's face integrated mortar.
For achieving the above object, present invention employs following technical scheme:
The special low alkalinity bonding of a kind of warming plate is wiped one's face integrated mortar, and it is characterized in that, described mortar is made up of following component by mass percentage:
Described aggregate is 50 ~ 100 order quartz sands.
Preferably, described quaternary composite gelled material comprises following component, and each component shared mass percent in described mortar is as follows;
Wherein, described cement is the one in ordinary Portland cement, silicate cement and complex cement, and strength grade is not less than 42.5 grades; Described breeze is S95 level or S105 level; Described metakaolin is 1250 order powder.
Preferably, described water-keeping thickening component is one or more in hydroxypropyl methyl cellulose ether, ethoxyl methyl cellulose ether, methyl cellulose ether, sodium cellulosate, polyvinyl alcohol, polyoxyethylene, wilkinite.
Preferably, described cracking resistance component comprises following component, and each component shared mass percent in described mortar is as follows;
Inorganic mineral fiber 0.05% ~ 0.40%
Organic fibre 0.05% ~ 0.10%;
Wherein, described inorganic mineral fiber be brucite fiber, sapphire whisker, glass fibre one or more, described organic fibre is one or more in PP fiber, polyvinyl alcohol fiber, Buddhist nun's human relations fiber.
Preferably, described enhancing hydrophobic component comprises following component, and each component shared mass percent in described mortar is as follows;
Wherein, described micro-nano powder body material is SILICA FUME and nano silicon is composite forms, and compound proportion is: SILICA FUME: nano silicon=2:1; Described high efficiency water reducing agent is the one in naphthalene water reducer, melamine based water reducer, poly carboxylic acid series water reducer.
Preferably, the described anti-component that hangs from above is by starch ethers with hydrated magnesium silicate is composite forms, and compound proportion is: starch ethers: hydrated magnesium silicate=1:1 ~ 2; Wherein said starch ethers is the one in hydroxypropyl starch ether and carboxymethyl starch ether, and described hydrated magnesium silicate is the pangel series product of Hong Kong Hai Yi enterprise development company limited agency, and production unit is TOLSA company of Spain.。
Inventive principle:
Above-mentioned warming plate special low alkalinity bonding integrated mortar of wiping one's face applies following technology:
1, enhancing, hydrophobic
The present invention adopts micro-nano powder body material modification technology and water reducing and strength increasing technology to combine, and namely utilizes filling effect and the volcano ash effect of micro-nano powder body material, improves the degree of compactness of bonding plastering mortar; Utilize high efficiency water reducing agent to reduce whole mortar water consumption simultaneously, reduce the existence of free-water, thus improve the bulk strength of bonding plastering mortar.
Hydrophobic nature latex powder and organosilicon moisture repellent are dispersed in whole mortar, define by the inorganic frame system formed with organic binder bond in the mortar of solidification.This system utilizes the hydrophobic nature of hydrophobic nature latex powder and organosilicon moisture repellent, after capillary wall film forming, greatly reduce the contact area of water and mortar surface, the globule on bonding plastering mortar surface is made to be not easy to infiltrate pore interior by pore, thus reduction water-intake rate, make whole mortar have hydrophobic effect.Meanwhile, the film forming properties of hydrophobic nature latex powder, mortar force of cohesion increases substantially, and is improved with the cohesive force of base material.
2, cracking resistance
The present invention adopts fiber composite cracking resistance technology to combine with soft state cracking resistance technology, i.e. inorganic mineral fiber and organic fibre compounding technology: after matrix material stirs, ten hundreds of fibers is evenly scattered in whole mortar disorderly, these fiber aspect interlock, isotropy, be uniformly distributed, as tens thousand of micro-" reinforcing bars " are implanted in the matrix of sand-cement slurry.When mortar matrix owing to shaking, expanding with heat and contract with cold, the energy that produces of the stress that causes of the reason such as drying shrinkage, blast can due to the existence of a large amount of fiber approach exhaustion.So the existence of the fiber of huge amount, both consume energy, alleviate stress again.Therefore, multiple fiber composite technology can the tensile strength of remarkable reinforced mortar, and opposing stress, reduces cracking.Soft state cracking resistance technology and hydrophobic nature latex powder film forming in mortar, whole mortar is changed to elasticity by rigidity, due to the rigid structure that flexibility and the deformability of polymkeric substance are formed far above cement etc., the deformable of mortar is improved, the effect of dispersive stress is largely increased, thus improves the crack resistance of mortar.
3, application property
Because of the characteristic (unit weight absorbs water greatly, easily) of cement insulation board, the present invention must have water conservation, the anti-construction property hung from above.For reaching this object, the present invention is composite by multiple water-keeping thickening material, makes it have the characteristic of low viscosity, high water conservation.Starch ethers and hydrated magnesium silicate composite, mortar water-retentivity can be improved, solve again and anti-hang performance from above.Hydrated magnesium silicate, belongs to layered silicate one class, is made up of two-layer tetrahedral silicon dioxide unit, is connected to form by a central Oxygen atom and the discontinuous magnesium atom octahedron of one deck.This structure makes hydrated magnesium silicate have primitive fiber acicular structure, and acicular structure makes it have very effective absorption property, makes full-bodied product suspension have thixotropy and pseudo-plasticity;
4, low alkalinity
The present invention adopts cement, breeze, semi-hydrated gypsum and metakaolin to form quaternary complex cementitious system, has following characteristics: 1. breeze part replaces cement, reduces cement consumption, reduce Ca (OH) 2 generation; 2. the main component of metakaolin product is highly active aluminium sesquioxide (Al2O3) and silicon-dioxide (SiO2), they react with the calcium hydroxide produced during hydrated cementitious (Ca (OH) 2) at normal temperatures and pressures, generate Behavior of Hardened Cement Paste (hydrated calcium silicate and drated calcium aluminate etc.); 3. the calcium hydroxide (Ca (OH) 2) produced when semi-hydrated gypsum and hydrated cementitious reacts, and promotes the generation of ettringite.The application of quaternary complex cementitious system, reduce the content of mortar class calcium hydroxide (Ca (OH) 2), the alkalescence of whole system weakens, and alkaline-resisting grid cloth longer service life is of a specified duration, and the weather resistance of external thermal insulation system and alkali burnout resistance can improve.
Invention advantage:
Hinge structure of the present invention has following beneficial effect:
1, this mortar both can be used for warming plate and had pasted, and had cohesive force strong, good toughness, the feature do not hung from above; Can be used for the protective treatment of warming plate top layer simultaneously, with alkali-proof glass fiber mesh with the use of, have water retention property good, the engineering time is long, easy levelling receipts light, and intensity is high, does not ftracture, not the feature such as dry linting.
2, this invention adopts quaternary complex cementitious system, and in system, alkalescence weakens, and water-intake rate is low, has hydrophobic effect.The thin plastering external insulation system of exterior weather resistance adopting this product to construct is very good, and finish coat is not easy the accumulation of salt in the surface soil and turns white.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with case study on implementation, technical parameter further being done to the present invention and describing.
A kind of warming plate special low alkalinity bonding wipes one's face the component of three embodiments of integrated mortar and mass percent proportioning in table 1:
Table 1:
Organosilicon moisture repellent is the powder A that Wa Ke company produces, and hydrated magnesium silicate is the pangel AD of Hong Kong Hai Yi enterprise development company limited agency, and other all raw materials above are commercially available prod entirely,
The preparation method of above-described embodiment one to three is: weigh various raw material by said ratio, then mix in stirrer, stir.
By the slurry that above-described embodiment one to three proportioning is produced, carry out by ratio of water to material=0.23 ~ 0.25:1 the stirring that adds water, after stirring 5min, carry out application property inspection and physicals detection.Water retention test method is undertaken by the 7th chapter regulation in JGJ/T70-2009; Water regain is undertaken by the 7th chapter regulation in JC/T1004-2006; Cohesive strength, operable time, snappiness are undertaken by the regulation of JG149-2003.After testing, this product operable time is long, has good workability, and sticky cutter, pastes cement insulation board and do not hang from above, easily levelling, receipts light of plastering, leakless; Water retention is greater than 99%, and water regain is very low, and its physicals is in table 2:
Table 2:
It is to be noted; as described above is only the embodiment explaining the present invention; not attempt does any restriction in form to the present invention according to this; under the premise without departing from the principles of the invention; some changes and retouching can also be made; have any change or the retouching of the relevant the present invention that does under identical invention spirit therefore all, these change or retouching is also considered as protection scope of the present invention.