Technical background
Present building coating; major part is to be the organic coating of main film forming substance with synthetic resins; the raw material of synthetic resins is mainly from oil; and oil is a kind of Nonrenewable resources; along with the development of society, oil is as a kind of main energy sources and important chemical material, because a large amount of exploitation has faced exhaustion; so that supply growing tension, oil crisis occurs.And all can use certain amount of organic solvent in the manufacturing of organic coating and the process of construction, these organic solvents also are from oil, and these organic solvents can directly be emitted in the atmosphere in the production of coating and construction process, so both caused a large amount of wastes of resource, and can cause again environment and the direct or indirect harm of human body.Inorganic paint is to be main film forming substance with the inorganics, the source of its main film forming substance is natural crystal, metal oxide etc., reserves enrich, are easy to get on these raw material earth, and the inorganic paint majority is dispersion medium with water, filmogen itself is nontoxic, the volatile matter that does not have organic solvent and so on after the construction meets the requirement of desired environmental protection of modern society and Sustainable development fully.The coating of inorganic dry powdery particularly, produce easy, do not need dispersion medium, avoided organic solvent to evaporate in the atmosphere and polluted, eliminated coating in production, transportation, storage and construction process to danger such as the harm of HUMAN HEALTH and issuable fire.
Organic coating will reach certain decorative effect, and the base material planeness is required height, needs repeatedly construction, coating exists sticking power relatively poor usually, defectives such as foaming easily, cracking, poor durability, though and rich color, but surface effect is difficult to make various solids or grain effect based on the plane.And inorganic paint and porous inorganic ground have the good binding performance, and the coating of formation can be breathed freely, good weatherability, hardness height, has good physical and chemical performance.
Summary of the invention
Solvent brings harm to environment and HUMAN HEALTH in the organic coating; realize the Sustainable development of society; save energy; remedy the ornamental simplification of organic coating, the purpose of this invention is to provide a kind of inorganic powder texture coating, it does not contain organic solvent; but better protection metope; make the decorative effect variation, easy construction can satisfy strict day by day environmental requirement and personalized application demand.
Main technical schemes of the present invention is as follows:
The consisting of of inorganic powder texture coating (weight percent): cement 20~40%, redispersable latex powder 2~8%, thickening material 0.1~0.5%, anti-fissuring agent 0.1~0.5%, color sand 30~60%, filler 5~20%.
The present invention can also add hydrophober on demand, and its weight percent 0.0~1.5% also can add mineral dye on demand, its weight percent 0~3.0%.
Inorganic powder texture coating of the present invention is main by inorganic materials cement, color sand, filler mainly, is aided with polymer dispersion powder and multiple additives again.With cement is main binding material, cement is that white portland cement and the strength grade of No. 425 white portland cement or No. 425 is that the arbitrary proportion of the ordinary Portland cement of 42.5R mixes, construction application obtains the porousness coating on cement matrix, form homogeneous strata gradually with base material, bond together securely.Redispersable latex powder is by vinyl acetate and tertiary ethylene carbonate, ethene, the multipolymer that in the acrylate any one or more than one reactions generate, the emulsion powder that the process spraying drying obtains, it has good redispersible, again be dispersed into emulsion when contacting with water, and its chemical property and initial latex are identical, can improve the cohesive force of material, force of cohesion, reduce the water-absorbent of material, reduce the Young's modulus of material, the folding strength of strongthener, impact-resistance, wear resistance and weather resistance, improve the workability of material, generally in doing mixed premixing mortar, add redispersable latex powder, can improve the multiple performance of mortar.Thickening material comprises hydroxyethylmethyl-cellulose, Vltra tears etc., adds thickening material the water retention property of inorganic powder texture coating and workability are improved.Anti-fissuring agent comprises wood fibre or regenerated fiber, and its length between 1~100 micron, strengthens the splitting resistance of paint film at 0.02~5 millimeter of length, diameter.Selected hydrophober is silicone based powder and Zinic stearas etc.Color sand is natural colour sand and artificial color sand, is formed according to the ornamental grating that requires by different-grain diameters such as 20~40 orders, 40~80 orders, 80~120 orders, and color and stereoeffect can be provided.Pigment is inorganic powder pigment.Filler comprises 200~400 purpose silica powders or water-ground limestone or wollastonite powder or talcum powder etc., not only fills the space but also can reduce cost.
The production process of this coating is: various raw materials are dropped in the stirrer in proportion, can pack warehouse-in after mixing.
The inorganic powder texture coating is smooth, solid, clean to qualified base material requires, surface no greasy dirt, floating dust, loose particles and do not have pollutents such as mould, tongue algae, greasy dirt.Elder generation is with the inorganic powder texture coating in proportion during construction: coating: water<weight ratio 〉=100: 20~40 allotments, stir, regulate working viscosity, then on demand with one or more the instrument in the service tools such as plucking cylinder, impression cylinder, special cylinder, batch cutter, spray gun, brush, with roller coat, spraying, batch scrape, any one or more than one constructional method wherein such as brushing, can obtain the coating of different shaping, have good decoration effect, special cylinder is meant that according to metope shape-designing becomes the cylinder of respective shapes.
This coating is compared with general coating, has following characteristics:
1, low VOC, environmental protection; The raw material that adopts all is a dry powder, and major part all is the inorganic materials that is easy to get, and the VOC in the coating is almost nil, and human body and environment are not had bad influence.
2, construction is easy, easy; Can directly on qualified base material, construct, not need priming paint, available various service tool constructions.
3, texture uniqueness, ornamental strong; Various service tool and constructional method can obtain various surface effect, have very high ornamental, requirement that can be satisfying personalized.
4, water-fast, ventilative, non-foaming, do not chap; The coating of formation such as the color sand of inorganic bond material, different-grain diameter grating, filler has porousness, makes coating have air permeability and good, water tolerance, can not bubble, and the adding of various additives makes coating have certain toughness to be difficult for producing be full of cracks.
5, rich color nature, good endurance; The inorganic materials stable in properties has good weather, and color sand and mineral dye etc. can make coating color nature, and color is abundant.
Embodiment
Embodiment 1
The composition of present embodiment and weight percent are: No. 425 white cements 20.0%, redispersable latex powder 8.0%, Vltra tears 0.2%, hydrophober organosilicon powder 0.3%, color sand 56.0%, the 325 order silica powder 15.0% of wood fibre 0.5%, 80~120 orders.
Inorganic powder texture coating with embodiment 1 gained: water=100: 30~35 (weight ratio) opens material; Criticize earlier and scrape one time, use plucking cylinder roller coat one time after 4 hours, maintenance seven days can obtain strong, the ornamental high coating that the plucking effect is arranged of texture.
Embodiment 2
The composition of present embodiment and weight percent are: No. 425 white cements 28.0%, redispersable latex powder 6.5%, Vltra tears 0.35%, hydrophober organosilicon powder 0.25%, wood fibre 0.4%, color sand 54.55%, the 325 order silica powder 10.0% of mineral dye red iron oxide 0.1%, 80~120 orders.
Inorganic powder texture coating with embodiment 2 gained: water=100: 25~30 (weight ratio) opens material; Criticize and scrape two times, maintenance seven days can obtain the coating that texture is strong, decorate high emulation stone effect.
Embodiment 3
The composition of present embodiment and weight percent are: No. 425 white cements 35.0%, redispersable latex powder 4.0%, hydroxyethylmethyl-cellulose 0.3%, hydrophober 0.4%, wood fibre 0.2%, the color sand 5% of mineral dye iron oxide yellow 0.2%, 40~80 orders, color sand 46.9%, the 325 order silica powder 8.0% of 80~120 orders.
Inorganic powder texture coating with embodiment 3 gained: water=100: 25~30 (weight ratio) opens material; Directly use embossing cylinder roller coat one time, maintenance seven days can obtain the coating that has the special texture effect that texture is strong, decoration is high.
Embodiment 4
The composition of present embodiment and weight percent are: No. 425 white cements 36.0%, 42.5R ordinary Portland cement 4%, redispersable latex powder 2.0%, Vltra tears 0.1%, hydrophober organosilicon powder 0.2%, wood fibre 0.5%, the color sand 2.0% of 20~40 orders, color sand 43.2%, the 325 order silica powder 5.0% of color sand 7.0%, 80~120 orders of 40~80 orders.
Inorganic powder texture coating with embodiment 4 gained: water=100: 20~25 (weight ratio) opens material; Directly roll roller coat one time with the naked body roller, maintenance seven days, can obtain texture strong, decorate the high coating that imitative bark effect is arranged.