CN105647263A - Flexible dry powder putty for exterior wall external insulation - Google Patents
Flexible dry powder putty for exterior wall external insulation Download PDFInfo
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- CN105647263A CN105647263A CN201410665365.6A CN201410665365A CN105647263A CN 105647263 A CN105647263 A CN 105647263A CN 201410665365 A CN201410665365 A CN 201410665365A CN 105647263 A CN105647263 A CN 105647263A
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Abstract
Flexible dry powder putty for exterior wall external insulation is provided. The putty comprises 30-45 parts by weight of polyvinyl acetate/ethylene copolymerized latex powder, 10-30 parts by weight of vinyl versatate, 10-15 parts by weight of redispersible latex powder, 0.1-1 part by weight of organosilicone powder, 1-5 parts by weight of staple fibers, 5-10 parts by weight of a composite filler and 3-5 parts by weight of auxiliary agents. The composite filler comprises quartz sand, talcum powder and hydroxylapatite. The auxiliary agents comprise a stabilizing agent, a defoaming agent, a desiccant, an antioxidant and a sterilizing agent. Flexibility of the putty is higher than that of a base material, and therefore the putty can effectively adapt to deformation of the base material, buffer deformation of the putty itself under actions of outer environment factors, relieve stress concentration, and reduce the possibility that coating surfaces crack and peel off. The putty is mainly used for an exterior wall external insulation system, is between insulating layer cover mortar high in strength in the system and exterior facing coating high in flexibility and low in strength, and plays a role of making flexibility changed gradually.
Description
Technical field
The present invention relates to paint field, particularly relate to the flexible dry-powder putty of a kind of external wall outer insulation.
Background technology
External wall exterior insulation work is constructively a complete system, and agent structure (body of wall) is made up of thermal insulation layer, protective layer, greasy surface layer and priming paint top coat layer, a common formation multi-functional combined wall. Putty is that construction surface carries out pretreated a kind of surface packing material, and main purpose is filled the hole of construction surface and corrects the curve deviation of construction surface, lays a solid foundation for obtaining even, level and smooth lacquer painting. Putty is generally made up of base-material, filler, water and auxiliary agent etc., and wherein, base-material also claims binding agent, is the most critical component of putty, mainly plays the various effects such as bonding. The most frequently used binding agent of putty is cement and organic polymer, organic polymer have again emulsion and latex powder point. Cement is that cohesiveness is good, durable and the rational binding agent of cost performance, but tensile strength and splitting resistance are poor, and organic polymer and can increase tough to its modification, thus improves putty performance. Filler mainly plays filling effect, and conventional has calcium carbonate, talcum powder and quartz sand etc. Should notice that the collocation of filler fineness uses; Auxiliary agent has thickening material, water-holding agent etc. Thickening material and water-holding agent play Bao Shui, improve storage and workability, generally use cellulose family. Antifreezing agent mainly improves putty package stability at low temperatures, and surface slip agent and water reducer etc. are generally used in high-grade putty, improve the workability of putty; What have also adds fiber, plays cracking resistance effect.
Building energy conservation cause rapidly, is played positive and important pushing effect by the External Thermal Insulation Technology for External development of current China, but extensively carrying out along with external wall outer insulation engineering, also expose the qualitative problems of construction of some ubiquities. Especially in external wall outer insulation engineering using coating as finish coat, often occur that dope layer ftractures, bubbles, the quality problems such as come off, seriously have impact on coating to the decoration of building with to the provide protection of heat insulation system.Although causing the reason that coating ftractures a lot, but from engineering practice, self quality of the putty the most easily ignored and with heat insulation system matching problem, be the one of the main reasons causing external wall outer insulation application failure.
Summary of the invention
It is an object of the invention to provide the flexible dry-powder putty of a kind of external wall outer insulation, can effectively adapt to the deformation of base material and cushion the deformation self produced under outside environmental elements effect, to reduce the cracking of application surface layer and to peel off.
For realizing the above-mentioned purpose of the present invention, the present invention provides a kind of external wall outer insulation flexible dry-powder putty, is made up of the raw material of following weight part number: Vinyl Acetate Copolymer/ethylene copolymer latex powder 30-45 part, tertiary ethylene carbonate 10-30 part, redispersable latex powder 10-15 part, silicone powder 0.1-1 part, staple fibre 1-5 part, compounded mix 5-10 part, auxiliary agent 3-5 part.
Described compounded mix is made up of quartz sand, talcum powder and hydroxyapatite, for the shrinkability reduced in putty powder solidification process. Described quartz sand is 100-120 order.
Described auxiliary agent comprises stablizer, defoamer, non-blushing thinner, oxidation inhibitor, sterilant.
Described stablizer is dibasic lead phosphite, can promote Granular composite, stops polymer ions cohesion, increases the initial stage caking ability of putty; Described defoamer is GPES type defoamer, it is possible to effectively stop the formation of bubble and the generation of shrinkage cavity phenomenon, scrapes effect to improve the stirring velocity of putty and to criticize; Described oxidation inhibitor is aromatic amine oxidation inhibitor.
The compared with prior art useful effect of the present invention.
The flexible dry-powder putty of external wall outer insulation provided by the invention, its flexibility is higher than the flexibility of base material, can effectively adapt to the deformation of base material and cushion the deformation self produced under outside environmental elements effect, relieve stresses is concentrated, the possibility reduce application surface layer cracking, peeling off, it is mainly used in external thermal insulation system, between the exterior finishing coating of intensity is higher in system thermal insulation layer finish coat mortar and high flexibility, low strength, plays flexible gradual change effect.
Embodiment
The present invention is further described below in conjunction with specific embodiment.
Embodiment 1.
The present embodiment provides a kind of external wall outer insulation flexible dry-powder putty, is made up of the raw material of following weight part number: Vinyl Acetate Copolymer/40 parts, ethylene copolymer latex powder, tertiary ethylene carbonate 21 parts, redispersable latex powder 13 parts, silicone powder 0.6 part, 3 parts, staple fibre, compounded mix 8.5 parts, auxiliary agent 4 parts.
Described compounded mix is made up of quartz sand, talcum powder and hydroxyapatite, for the shrinkability reduced in putty powder solidification process. Described quartz sand is 100-120 order.
Described auxiliary agent comprises stablizer, defoamer, non-blushing thinner, oxidation inhibitor, sterilant.
Described stablizer is dibasic lead phosphite, can promote Granular composite, stops polymer ions cohesion, increases the initial stage caking ability of putty.
Described defoamer is GPES type defoamer, it is possible to effectively stop the formation of bubble and the generation of shrinkage cavity phenomenon, scrapes effect to improve the stirring velocity of putty and to criticize.
Described oxidation inhibitor is aromatic amine oxidation inhibitor.
When the flexible dry-powder putty of external wall outer insulation of the present invention and water stir, redispersable latex powder is met water and is formed polymer emulsion, in condensation drying process, emulsion can be dewatered again, and polymer beads forms polymeric acceptor structure in material bodies, and putty is played modifying function.
Described staple fibre can play the effect of skeleton in putty layer, and the stress dispersion that will produce when shrinking, makes putty layer not produce tiny crack, thus also make to be coated in the exterior wall film in putty layer and crack performance does not occur.This is owing to, after other powder medium blending dispersion in: staple fibre and putty, fiber can form a three-D space structure in material bodies, it is possible to water and other liquid are included in therebetween. During construction, under the effect of shearing, part moisture can be discharged in matrix from fibrous texture, causes the viscosity of putty to lower, and can scrape and be coated with performance raising; After shearing disappears, fibrous texture recovers rapidly again, reuptakes the moisture discharged, and makes putty slurry body recover original viscosity. Condense the initial stage at putty, owing to the moisture of inside can be transferred to rapidly the surface that body starched by putty by the capillary action of its internal fiber structure, make the moisture distribution of system inside even, therefore, putty tension force in drying process reduces, and plays the cracking resistance effect at putty initial stage.
The performance test experiment of the flexible dry-powder putty of external wall outer insulation of the present invention.
1, all-round property testing: flexible for the present embodiment 1 external wall outer insulation dry-powder putty is carried out all-round property testing, the results are shown in Table 1, table 1 is the technical feature of the flexible dry-powder putty of external wall outer insulation of the present invention.
Table 1: the technical feature of the flexible dry-powder putty of external wall outer insulation of the present invention.
| Project | Technical indicator | Detected result of the present invention |
| Application property | Scrape painting accessible | Scrape painting accessible |
| Initial dry cracking resistance (6h) | Flawless | Flawless |
| Grinability | Can polish by hand | Can polish by hand |
| Alkali resistance (48h) | Without exception | Without exception |
| Water tolerance (96h) | Without exception | Without exception |
| Cohesive strength/MPa(standard state) | ��0.6 | 1.42 |
| Cohesive strength/MPa(freeze-thaw cycle 5 times) | ��0.4 | 1.15 |
| Dynamic cracking resistance/mm | ��0.3 | 0.35 |
As shown in Table 1, the flexible dry-powder putty of external wall outer insulation of the present invention has excellent over-all properties.
2, water regain can be tested: the water regain of putty is directly connected to the weather resistance of putty and the safety in utilization of application layer. The silicone powder that the present invention adds can reduce putty water regain, improve the freeze-thaw-circulation destruction of putty, recording the relation of silicone powder Different Weight part number volume and putty water regain respectively, the results are shown in Table 2, table 2 is silicone powder volume and the relation of putty water regain.
Table 2: the relation of silicone powder volume and putty water regain.
| Silicone powder volume | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 |
| Water regain (g/10min) | 3.5 | 2.4 | 1.75 | 1.2 | 0.8 | 0.6 | 0.55 |
As can be seen from Table 2, along with the increase of silicone powder volume, the water regain of putty reduces. This be due to: silicone powder is the water-soluble polymers that a kind of molecular weight is relatively little, in water and air under the effect of carbonic acid gas, the methyl silicate being insoluble to water can be generated, form methyl silicon resin waterproof membrane more further, waterproof membrane is enclosed between the composition particle of putty, has and hates water function.
3, condition of storage test result: under condition rainproof, moistureproof, deposit 6 months, packing specifications is 20 kilograms/bag.
4, execution conditions: construction basic level requirement solid, totally, roughly smooth; Substrate surface should without bright water; When substrate surface is dry especially, can suitably spray water wetting. Putty layer can once be scraped and is coated with 2-3mm, scrapes 2 times. Working-yard temperature should more than 5 DEG C, and the slurry prepared should be finished in 4 hours; Make moist, mouldy, the accumulation of salt in the surface soil, the position that comes off, need to use after processing.
Embodiment 2.
The present embodiment provides a kind of external wall outer insulation flexible dry-powder putty, is made up of the raw material of following weight part number: Vinyl Acetate Copolymer/30 parts, ethylene copolymer latex powder, tertiary ethylene carbonate 12 parts, redispersable latex powder 11.5 parts, silicone powder 0.2 part, 2 parts, staple fibre, compounded mix 6 parts, auxiliary agent 3.8 parts.
Embodiment 3.
The present embodiment provides a kind of external wall outer insulation flexible dry-powder putty, is made up of the raw material of following weight part number: Vinyl Acetate Copolymer/44 parts, ethylene copolymer latex powder, tertiary ethylene carbonate 27.5 parts, redispersable latex powder 14.85 parts, silicone powder 0.8 part, 4.5 parts, staple fibre, compounded mix 9.3 parts, auxiliary agent 5 parts.
Claims (10)
1. the flexible dry-powder putty of external wall outer insulation, it is characterized in that, it is made up of the raw material of following weight part number: Vinyl Acetate Copolymer/ethylene copolymer latex powder 30-45 part, tertiary ethylene carbonate 10-30 part, redispersable latex powder 10-15 part, silicone powder 0.1-1 part, staple fibre 1-5 part, compounded mix 5-10 part, auxiliary agent 3-5 part.
2. the flexible dry-powder putty of external wall outer insulation as claimed in claim 1, it is characterized in that, it is made up of the raw material of following weight part number: Vinyl Acetate Copolymer/40 parts, ethylene copolymer latex powder, tertiary ethylene carbonate 21 parts, redispersable latex powder 13 parts, silicone powder 0.6 part, 3 parts, staple fibre, compounded mix 8.5 parts, auxiliary agent 4 parts.
3. the flexible dry-powder putty of external wall outer insulation as claimed in claim 1, it is characterized in that, it is made up of the raw material of following weight part number: Vinyl Acetate Copolymer/30 parts, ethylene copolymer latex powder, tertiary ethylene carbonate 12 parts, redispersable latex powder 11.5 parts, silicone powder 0.2 part, 2 parts, staple fibre, compounded mix 6 parts, auxiliary agent 3.8 parts.
4. the flexible dry-powder putty of external wall outer insulation as claimed in claim 1, it is characterized in that, it is made up of the raw material of following weight part number: Vinyl Acetate Copolymer/44 parts, ethylene copolymer latex powder, tertiary ethylene carbonate 27.5 parts, redispersable latex powder 14.85 parts, silicone powder 0.8 part, 4.5 parts, staple fibre, compounded mix 9.3 parts, auxiliary agent 5 parts.
5. the flexible dry-powder putty of external wall outer insulation as according to any one of claim 1-4, it is characterised in that, described compounded mix is made up of quartz sand, talcum powder and hydroxyapatite.
6. the flexible dry-powder putty of external wall outer insulation as claimed in claim 5, it is characterised in that, described quartz sand is 100-120 order.
7. the flexible dry-powder putty of external wall outer insulation as according to any one of claim 1-4, it is characterised in that, described auxiliary agent comprises stablizer, defoamer, non-blushing thinner, oxidation inhibitor, sterilant.
8. the flexible dry-powder putty of external wall outer insulation as claimed in claim 7, it is characterised in that, described stablizer is dibasic lead phosphite, can promote Granular composite, stops polymer ions cohesion, increases the initial stage caking ability of putty.
9. the flexible dry-powder putty of external wall outer insulation as claimed in claim 7, it is characterised in that, described defoamer is GPES type defoamer.
10. the flexible dry-powder putty of external wall outer insulation as claimed in claim 7, it is characterised in that, described oxidation inhibitor is aromatic amine oxidation inhibitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665365.6A CN105647263A (en) | 2014-11-20 | 2014-11-20 | Flexible dry powder putty for exterior wall external insulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665365.6A CN105647263A (en) | 2014-11-20 | 2014-11-20 | Flexible dry powder putty for exterior wall external insulation |
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| CN105647263A true CN105647263A (en) | 2016-06-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106752239A (en) * | 2016-11-24 | 2017-05-31 | 安庆市凯瑞建材有限公司 | A kind of outer wall flexible water proof putty and preparation method thereof |
| CN110079145A (en) * | 2019-04-18 | 2019-08-02 | 四川蓝鼎新材料有限公司 | A kind of gypsum putty production technology based on desulfurization gypsum powder |
| CN110550927A (en) * | 2019-10-08 | 2019-12-10 | 山东大学 | Industrial waste gypsum mortar prepared by industrial tail gas synergy and toxicity solving method |
| CN115820025A (en) * | 2022-06-20 | 2023-03-21 | 浙江绿城房屋服务系统有限公司 | Flexible putty capable of preventing floor paint from hollowing and falling off and use method thereof |
-
2014
- 2014-11-20 CN CN201410665365.6A patent/CN105647263A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106752239A (en) * | 2016-11-24 | 2017-05-31 | 安庆市凯瑞建材有限公司 | A kind of outer wall flexible water proof putty and preparation method thereof |
| CN110079145A (en) * | 2019-04-18 | 2019-08-02 | 四川蓝鼎新材料有限公司 | A kind of gypsum putty production technology based on desulfurization gypsum powder |
| CN110550927A (en) * | 2019-10-08 | 2019-12-10 | 山东大学 | Industrial waste gypsum mortar prepared by industrial tail gas synergy and toxicity solving method |
| CN115820025A (en) * | 2022-06-20 | 2023-03-21 | 浙江绿城房屋服务系统有限公司 | Flexible putty capable of preventing floor paint from hollowing and falling off and use method thereof |
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Application publication date: 20160608 |
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