CN105368192A - Construction method of hanging color powder coating for building walls - Google Patents

Abstract

The invention discloses a construction method of a hanging color powder coating for building walls. The method is as below: adding a defoaming agent, an antiseptic, a polyvinyl acetate emulsion and a BA-154 emulsion in the water under agitation, stirring and reacting for more than 30 min to obtain an emulsion solution; adding bentonite, calcium tripolyphosphate and a pigment in another container, and stirring to obtain a slurry; adding the slurry into an emulsion solution and stirring uniformly; adding ammonia to adjust the pH value to 8.2-8.4, and adjusting the viscosity at 25-30 mPa.s; and spraying the coating on the wall with spray gas pressure of 3.0-4.2 kg/cm<2>, spray distance from the wall of 20-25 cm and tilt angle of 70-90 DEG, so that the particles in the spraying material hang on the wall to form color stripes or spot color, and dry directly. The coating has strong weather resistance and high bonding strength with the wall body, is not easy to peel off, and can form a hanging flow shape and a spot color pattern.

Description

A kind of building wall hangs stream color powder coating application method

Technical field

The invention belongs to technical field of chemistry and chemical engineering, particularly relate to the production technology of white powder coating.

Background technology

Powder coating, as the one in coating type, is used in building wall in a large number.But current powder coating weathering resistance is poor, especially the coating of outdoor wall surface is through rain drop erosion and after exposing to the weather, and easy peeling comes off and variable color, needs often to repair, thus causes its use cost too high.And current coating is all straight-shade coatings, cannot once form color coating.

Summary of the invention

Goal of the invention: for above-mentioned existing Problems existing and deficiency, the object of this invention is to provide a kind of building wall and hang stream color powder coating application method, weathering resistance is strong, comes off with the high peeling that is not easy of the bonding force of body of wall matrix, and can form extension stream-like and mottled multi color pattern.

Technical scheme: for achieving the above object, the present invention by the following technical solutions: a kind of building wall hangs stream color powder coating application method, and described powder coating is made up of following component by weight: polyvinyl acetate emulsion 100 parts; BA-154 emulsion 10 ~ 50 parts; Wilkinite 5 ~ 20 parts; Tripolyphosphate calcium 2 ~ 10 parts; 2 ~ 10 parts, magnesium oxide; Kaolin 5 ~ 10 parts; Defoamer 0.1 ~ 1 part; Sanitas 0.1 ~ 1 part; Pigment 0.1 ~ 5 part; 50 ~ 150 parts, water; Wherein, the particle diameter of wilkinite and tripolyphosphate calcium is 20 ~ 200 μm, comprises the following steps:

(1) coating configuration: under agitation, add defoamer and sanitas in the water of 1/3, stir evenly, then add polyvinyl acetate emulsion and BA-154 emulsion, and more than stirring reaction 30min obtains emulsion solution; In another reaction vessel, add remaining water and start stirring, adding remaining defoamer, sanitas, kaolin and magnesium oxide successively, and stir, then adding wilkinite, tripolyphosphate calcium and pigment, stirring and at least obtain slurry after 30min; Then slurry is added in emulsion solution and stir;

(2) adding ammoniacal liquor regulates Ph to 8.2 ~ 8.4 scopes, and adjusting viscosity is at 25 ~ 30mPa.s, for subsequent use;

(3) carry out surface treatment to building wall, then in the mode of spraying, the pulp spraying of step (2) is coated in metope, spray gas pressure is 3.0 ~ 4.2kg/cm2, and the distance of spray gun distance metope is 20 ~ 25cm, and angle of inclination is 70 ° ~ 90 °;

(4), after spraying evenly, the particulate matter in spray finishing material occurs to hang stream and forms color fringe or spot color, through dry.

Beneficial effect: compared with prior art, the present invention has stronger basal body binding force and weather resistance; Utilize the wilkinite of appropriate particle size and tripolyphosphate calcium in spraying slurry, form particle block simultaneously, be adjusted to suitable viscosity during use thus formed on metope and hang stream, the color of final formation sagging form and spot color, have rich color, decorative effect that stereoscopic sensation is strong.

Embodiment

Below in conjunction with specific embodiment, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.

Building wall of the present invention hangs stream color powder coating application method, and mainly for color flow hung type powder coating, this powder coating is made up of following component by weight: polyvinyl acetate emulsion 100 parts; BA-154 emulsion 10 ~ 50 parts; Wilkinite 5 ~ 20 parts; Tripolyphosphate calcium 2 ~ 10 parts; 2 ~ 10 parts, magnesium oxide; Kaolin 5 ~ 10 parts; Defoamer 0.1 ~ 1 part; Sanitas 0.1 ~ 1 part; Pigment 0.1 ~ 5 part; 50 ~ 150 parts, water; Wherein, the particle diameter of wilkinite and tripolyphosphate calcium is 20 ~ 200 μm, comprises the following steps:

(1) coating configuration: under agitation, add defoamer and sanitas in the water of 1/3, stir evenly, then add polyvinyl acetate emulsion and BA-154 emulsion, and more than stirring reaction 30min obtains emulsion solution; In another reaction vessel, add remaining water and start stirring, adding remaining defoamer, sanitas, kaolin and magnesium oxide successively, and stir, then adding wilkinite, tripolyphosphate calcium and pigment, stirring and at least obtain slurry after 30min; Then slurry is added in emulsion solution and stir;

(2) adding ammoniacal liquor regulates Ph to 8.2 ~ 8.4 scopes, and adjusting viscosity is at 25 ~ 30mPa.s, for subsequent use; Viscosity controller is one of key.

(3) carry out surface treatment to building wall, then in the mode of spraying, the pulp spraying of step (2) is coated in metope, spray gas pressure is 3.0 ~ 4.2kg/cm2, and the distance of spray gun distance metope is 20 ~ 25cm, and angle of inclination is 70 ° ~ 90 °; Now spouting velocity is lower, and ejection coating is stream bulk, and can flow downward on building exterior wall face, form scraggly stereoeffect, along with dirty, pigment can form the colored trace pulled, and has the aesthetic feeling of art.

(4), after spraying evenly, the particulate matter in spray finishing material occurs to hang stream and forms color fringe or spot color, through air-dry drying.

Claims (1)

1. building wall hangs a stream color powder coating application method, and described powder coating is made up of following component by weight: polyvinyl acetate emulsion 100 parts; BA-154 emulsion 10 ~ 50 parts; Wilkinite 5 ~ 20 parts; Tripolyphosphate calcium 2 ~ 10 parts; 2 ~ 10 parts, magnesium oxide; Kaolin 5 ~ 10 parts; Defoamer 0.1 ~ 1 part; Sanitas 0.1 ~ 1 part; Pigment 0.1 ~ 5 part; 50 ~ 150 parts, water; Wherein, the particle diameter of wilkinite and tripolyphosphate calcium is 20 ~ 200 μm, it is characterized in that comprising the following steps:

(1) coating configuration: under agitation, add defoamer and sanitas in the water of 1/3, stir evenly, then add polyvinyl acetate emulsion and BA-154 emulsion, and more than stirring reaction 30min obtains emulsion solution; In another reaction vessel, add remaining water and start stirring, adding remaining defoamer, sanitas, kaolin and magnesium oxide successively, and stir, then adding wilkinite, tripolyphosphate calcium and pigment, stirring and at least obtain slurry after 30min; Then slurry is added in emulsion solution and stir;

(2) adding ammoniacal liquor regulates Ph to 8.2 ~ 8.4 scopes, and adjusting viscosity is at 25 ~ 30mPa.s, for subsequent use;

(3) carry out surface treatment to building wall, then in the mode of spraying, the pulp spraying of step (2) is coated in metope, spray gas pressure is 3.0 ~ 4.2kg/cm2, and the distance of spray gun distance metope is 20 ~ 25cm, and angle of inclination is 70 ° ~ 90 °;

(4), after spraying evenly, the particulate matter in spray finishing material occurs to hang stream and forms color fringe or spot color, through dry.