Summary of the invention:
The purpose of this invention is to provide a kind of imitative aluminium sheet investment precoat of silicon modification acrylic acid that forms with the chemical bonding modification with element silicon.Its paint film is tough and tensile lasting, strong adhesion, and have water tolerance, alkali resistance, unidirectional vapour transmission and hydrophobic nature preferably, and anti-mold effect, self-cleaning function are good, can be widely used in exterior wall finishing.It is the important behaviour form that modern chemistry coating is covered with paint, lacquer, colour wash, etc. as building, has extremely strong practicality, science, economy and aesthetic effect, meets the weather and the architectural feature of China.
Technical scheme of the present invention is as follows:
The invention is characterized in: by polymer emulsion A, filler, pigment, auxiliary agent, water and polymer emulsion B by weight ratio 35~50: 1~5: 20~23: 7~8: 20~25: 14~20 is formulated.
Polymer emulsion A of the present invention is the hydroxy polymer emulsion.
Filler of the present invention is talcum powder class or lime carbonate class or swelling great soil group etc.;
Pigment of the present invention is burning pigment.
Auxiliary agent of the present invention is hardening accelerator class or flow agent class etc.
Polymer emulsion B of the present invention is the carbimide emulsion.
The concrete constructional method that the present invention is sprayed at body of wall is as follows:
1, by coating of the present invention: the construction proportioning dilution of cleaning water=2.5: 1, to look dope viscosity and can suitably regulate amount of water, the coating after the dilution must be poured spray gun into and spray then with the filtration of 200 order filtering nets;
2, pressing (once twice) twice constructs:
The first degree construction: after treating the coatingsurface thorough drying (fine, at least 12 hours), carry out sand milling with 600# sand paper, must add water in the sand grinding process carries out, otherwise meeting scab paper, bad polishing is after sand milling is intact, wash metope with cleaning water, the flush away residual particles, treat the metope drying after, can carry out the work of following step; Require: smooth surface, no rough, spraying does not evenly have the phenomenon of growing dim.
The second degree construction: at exsiccant coatingsurface with the thorough dedusting of rag (the spray gun blowing does not reach requirements), the dust on the removing scaffolding, avoid being stained with film on, single-block area is above 20 square metres, must use and hang blue construction, the place that must not spray must fully hide, in order to avoid pollute; Require: surface effect is identical with model, and film coated surface does not have granule dust, is smooth to the touch, and spraying is even, and the gloss homogeneous does not have the phenomenon of growing dim.
Paint film of the present invention is tough and tensile lasting, strong adhesion, and it is splendid to have preferably water tolerance, alkali resistance, anti-mold effect, and have outstanding unidirectional vapour transmission, hydrophobic nature, can make in the body of wall moisture evaporation dry and extraneous moisture can't enter, self-cleaning function is good, can be widely used in exterior wall finishing.It is the important behaviour form that modern chemistry coating is covered with paint, lacquer, colour wash, etc. as building, has extremely strong practicality, science, economy and aesthetic effect, meets the weather and the architectural feature of China.
Embodiment:
Embodiment 1:
The present invention was by polymer emulsion A, filler, pigment, auxiliary agent, water and polymer emulsion B 45: 3: 20 by weight ratio: 8: 24: 16 formulated.
Polymer emulsion A of the present invention is the hydroxy polymer emulsion, and German COLOYS factory produces.
Filler of the present invention is the talcum powder class, as the talcum powder of Di Gaosha factory production.
Pigment of the present invention is titanium dioxide, as the titanium dioxide of factory of Du Pont production.
Auxiliary agent of the present invention is the flow agent class that German Bi Ke factory produces.
Polymer emulsion B of the present invention is Ah can's isocyanate emulsion that Nobel factory produces of reviving.
Embodiment 2:
The present invention was by polymer emulsion A, filler, pigment, auxiliary agent, water and polymer emulsion B 45: 2: 23 by weight ratio: 7: 23: 18 formulated.
Polymer emulsion A of the present invention is the hydroxy polymer emulsion that German COLOYS factory produces.
Filler of the present invention is the lime carbonate class, and is Powdered.
Pigment of the present invention is titanium dioxide.
Auxiliary agent of the present invention is the flow agent class.
Polymer emulsion B of the present invention is Ah can's isocyanate emulsion that Nobel factory produces of reviving.
Inspection after construction of the present invention is reported as follows:
Test event | Standard-required (acceptable end product) | Measured result | The individual event conclusion |
At condition in container | Mixing the back does not have firmly soon, shows off uniform state | Meet the requirements | Qualified |
Application property | It is accessible to brush two roads | Meet the requirements | Qualified |
Appearance of film | Appearance of film is normal | Beige, film evenly, brush mark is not obvious, does not have pin hole not have sagging, and appearance of film is normal | Qualified |
Time of drying (h) | ≤2 | <1 | Qualified |
Contrast ratio (white and light color) | ≥0.90 | 0.97 | Qualified |
Water tolerance (96h) | No abnormal | No abnormal | Qualified |
Alkali resistance (48h) | No abnormal | No abnormal | Qualified |
Abrasion resistance (inferior) | ≥1000 | >2000 | Qualified |
The coating freeze-thaw resistance | Never degenerate | Never degenerate | Qualified |
Coating temperature-change resistance (10 circulations) | No abnormal | No abnormal | Qualified |
Paint film of the present invention is tough and tensile lasting, strong adhesion, and it is splendid to have preferably water tolerance, alkali resistance, anti-mold effect, and have outstanding unidirectional vapour transmission, hydrophobic nature, can make in the body of wall moisture evaporation dry and extraneous moisture can't enter, self-cleaning function is good, can be widely used in exterior wall finishing.It is the important behaviour form that modern chemistry coating is covered with paint, lacquer, colour wash, etc. as building, has extremely strong practicality, science, economy and aesthetic effect, meets the weather and the architectural feature of China.