Granite is natural stone material, quality of a material is solid, rich simple sense, good durability, bright as a mirror, after polishing treatment have luxuriant nobility adornment effect, become the materials commonly used in high-grade decoration engineering. But excessive mining can cause soil erosion, granite is not conducive to the protection of the ecological environment; After cutting, such as transportation and installation process, the overall cost of expensive; As adornment material used, its construction is relatively complex, increased the wall bearing, there are many unsafe factors. Seams and easy to hide the dirt and flooding, and thereby affect beautiful; Some granite stone will release tiny amounts of radioactive elements, cause a harm to human health. The above factors make its application is limited by a certain. There has been research imitation granite coating to replace natural granite, the current common imitation granite coating varieties mainly include: natural really stone paint, imitation granite really stone paint, colorful, oil paint, color coating. These products are lowering the cost of decoration, save the natural resources, construction is convenient, and the advantages of safety, widely used in cement wall exterior wall thermal insulation system or benzene board, asbestos board, the surface of the material such as wood, but there are more or less some shortcomings.

Common imitation granite coating

1.1 natural really stone paint

Natural true stone lacquer is mainly composed of polymer, natural colored sand, and a variety of additives

Construction of the coating thickness of 2 mm to 3 mm, with high hardness, adornment sex is strong, widely applicable, good durability, etc. In addition, also has the effect of natural true stone, can satisfy the requirements of the plane and surface decoration, selection of natural stone powder, contains no artificial colors, and do not fade, the protection of the wall effect is remarkable. Natural true stone lacquer is used for building exterior wall coating, due to its rich simple sense, stereo sense is strong, bright color, appearance looks simple, bold. Has the feeling of piao guizhen, together with its production process, simple equipment, convenient construction, low cost, by the coating manufacturer's favour,

In order to meet the needs of the development of high-grade construction decoration industry is becoming more and more personalized, the importance of spraying process, more and more significant, only to be more perfect and supporting the construction process, to fully display the unique appearance of the really stone paint and superior performance. Natural really stone paint need to choose according to different design and color is single gun, double guns, three guns and other different construction tools, to meet the requirements of different construction technology, eventually achieve the ideal effect of spraying. And to achieve the result of marble, granite, it must choose two or three shots for spray gun. The construction difficulty bigger, higher requirements for construction personnel, even so, the simulation effect is not as good as imitation granite really stone paint, all into wood was lower than those of imitation granite really stone paint.

1.2 imitation granite really stone paint

Imitation granite really stone paint has evolved from natural really stone paint, adornment effect like marble, granite

The product for the replacement of the natural really stone paint, construction is convenient, with simple technology can reach the effect of single gun and colorful wonders, with strong cohesive force, water resistance, alkali resistance, aging resistance, do not fade, can prolong the service life of the building, has been widely used in exterior wall decoration workers t, adornment effect is good. Imitation granite really stone paint with all the advantages of the natural really stone paint, its adornment effect is more close to natural granite, but also with natural true stone paint has the same drawbacks, namely material consumption is larger, increased wall body weight.

1.3 the color coating

Lenses coating is a kind of by the particle color chip, emulsion or made of resin and various additives, can be applied to both inside and outside walls, and a new type of environmental art paint indoor ground.

The coating can imitate granite all sorts of decorative pattern design, can also according to the change of the need to adjust the color and pattern at, to create unique personalized color and pattern. Lenses coatings weather can super lightweight materials, color broad, diverse effect, and the advantages of simple construction, application field widely, can adapt to the irregular building metope, no radiation, no harm to the environment and human body. Lenses coating improved natural really stone paint and imitation granite really stone paint, big, the increase in the amount of material of wall body weight drawbacks, lightweight materials. But due to the coating thinner. Emulsion of lenses completely coated and become flat coating is more difficult, so the current external application but the quantity is not big, although have yet to be further improved. This product has been widely used in Europe, in the domestic new products, mostly used in epoxy lenses on the floor and indoor local adornment.

1.4 the oil-in-water type and colorful coating

Is a colorful coating with ordinary spraying a coating method can obtain a variety of color stereoscopic pattern, look very luxurious coatings. Generally divided into oil-in-water type, water-in-oil type, oil type oily bag, water bag water type four types. Oil-in-water type with colorful coating color is rich, gorgeous, elegant, luxurious, construction is convenient wait for a characteristic, just appeared to replace the color wallpaper, now realize commercial production. Oil-in-water type colorful coating stability in storage, construction and so on coating performance is better than that of water-in-oil and empties sandstones, colorful coating, is the most popular in the 1990 s domestic high-grade interior decorative materials, was regarded as a new generation of seamless wallpaper. But due to the use of nitrocellulose and organic solvents, products Yi Ran, explosive, released in the process of production and use of a large number of harmful gas, pollute the environment, and users caused much harm to production. For exterior wall with colorful coating, the weather is the main technical indicators. In ultraviolet light, wind, rain and hot and humid climate, under the long-term effects of film light loss happens, pulverization, discoloration, blister, crack, rust, in addition to consider its resistance to chemical corrosion in a certain environment in terms of performance. Oil-in-water type just because of its weather resistance is not ideal and less colorful coating applied to outside decoration. Along with the people environmental protection consciousness enhancement, the oil-in-water type application in interior wall, less and less colorful coating gradually withdrew from the market.

2 imitation granite coating

In view of the oil-in-water type colorful coating defects and people's demand for more light material, our company developed a new type of colorful coating, water package of water type and colorful coating (or water-based colorful coating). Water package of water type and colorful coating is a new generation of environmental protection TI architectural coatings, with its construction is convenient, with makings provinces, through the deployment of color can achieve the same effect as natural stone, known as the new lightweight imitation granite coating. The coating not only has the oil-in-water type the most advantages of colorful coating, and overcome the oil-in-water type using organic solvent a colorful coating faults, improve the weatherability, enlarge the using range of the colorful coating. As the colorful coating of the external walls of excellent general.

Imitation granite coating through a spray can produce a variety of color one integrated mass of the coating, its simulation, weather resistance, and the convenience of construction are much higher than natural really stone paint and imitation granite really stone paint, cost and really stone paint, imitation granite for traditional metope and thermal insulation wall body, which can effectively reduce the wall body weight. But because of water package of water type of colorful coating dispersed phase and dispersion medium composed of water-based material. Therefore, to solve the stability of the dispersed phase and dispersion medium and coexisting is difficult.

3 imitation granite coating in the external wall thermal insulation engineering application prospect

Exterior insulation in the implementation of building energy efficiency at the same time, also brings to the exterior walls of high-grade decorative larger difficulty. Loose foam insulation level, for example, is difficult to secure to the implementation of the dry hanging stone or ceramic tile to stick a face, in the past are applicable to all finishes rigid hard 4 layer coating is also difficult to meet the requirements of external wall thermal insulation material of flexible base.

Imitation granite coating is imitation granite coating technology innovation at a time. Paint itself has high flexibility and high cracking resistance, can satisfy the exterior insulation system of finish coating requirements. Imitation granite coating coating light weight compared with real stone, almost no load of the building, greatly reduces the construction costs, avoids the production of super weight and fall off, for high-level, high-rise building with granite exterior wall decoration has opened up broad prospects. In addition, it can satisfy the requirement of people personalized decoration design.

Imitation granite coating at a relatively low stone material price and the excellent properties of many once released by the majority of customers, with its instead of natural stone used in construction decoration will be the trend of future development.