Coating technology: analysis of texture coating construction

Core tip: texture coating construction operation is simple, easy to form, and there is no high level of construction personnel requirements Compared with the spraying of real stone paint, texture coating is mainly based on plastering construction, which is easier to control project quality and save material consumption Although texture coating has its advantages, it is easy to cause engineering quality problems due to improper construction The following mainly introduces the common engineering problems of texture coating, prevention and solutions 1 Flower caused by improper treatment of grass roots Because the texture coating shows the effect of sand accumulation in front of people, and some manufacturers Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Coating home news: texture coating construction operation is simple, easy to form, the level of construction personnel is not too high Compared with the spraying of real stone paint, texture coating is mainly based on plastering construction, which is easier to control project quality and save material consumption Although texture coating has its advantages, it is easy to cause engineering quality problems due to improper construction The following mainly introduces the common engineering problems of texture coating, prevention and solutions 1 The flower caused by improper treatment of the base course is the result of the accumulation of sand particles in front of people because of the texture coating In order to pursue more natural simulation effect, some manufacturers have produced the sand particles for the texture coating which are crushed by the natural ore they are transparent or semi transparent and have relatively poor covering power In this case, if there is color difference in the uneven color of the base layer, after finishing the texture coating, the surface layer will be flowered because the texture coating cannot cover the base color (2) During the construction of the project, mortar putty is used for leveling the base course, which is alkaline system The pH is as high as 13 If the maintenance of the base course fails to meet the standard, the alkali of the base course will migrate with the volatilization of water When the texture coating construction is completed, the alkali of the base course will move to the surface of the texture coating and cause blooming Solution: it is particularly important to treat the base course before the application of texture coating Before the construction, the floating ash and oil stain of the base course shall be cleaned After the treatment, the sealing primer shall be applied to seal the alkali of the base course in the base course Although this step can play a certain role, it cannot completely seal the alkali of the base course When the maintenance of the base course fails to meet the standard, the alkali will return, Therefore, the maintenance of the grass-roots is essential Base maintenance standard: pH < 10, humidity < 10%, 28 days in winter, 14 days in summer After the sealing primer is dry, the primer with covering power shall be applied to balance the color of the base layer During the application, it must be uniform to avoid the flower caused by the leakage of the texture coating, and the amount of the texture coating on the surface layer can also be saved Once the project is completed, it is difficult to repair such flowers, so we can only do it again 2 Flower caused by improper construction (1) scaffolding is mostly used in the construction site of textured coating After the scaffold is removed by plastering textured coating, there will be traces of scaffolding on the wall or flower caused by joints during construction at different times (2) Each worker's construction technology level is different, the construction method is different will cause the texture coating surface effect to have the difference, when the texture coating completely dries, will appear the partial or the whole hair (3) In different weather construction will also cause texture paint hair Because the texture coating is waterborne coating, it uses water as the dispersing medium and synthetic emulsion as binding agent, which is greatly affected by the natural environment When the temperature is too low, the construction of the texture coating will cause the texture coating to be unable to become a film or film bad and flower Solution: the construction of texture coating shall be carried out with hanging basket as much as possible, and the construction joint shall be left at the grid line If there is no grid joint, it shall be left at the inconspicuous places such as internal and external corners as much as possible When the joint inevitably occurs, it can be pasted with masking paper at the interface After the construction is completed, the masking paper shall be torn off, and then the finished part shall be pasted with masking paper, so as to avoid irregular joint Before construction, the workers shall be trained to standardize the construction methods At the same time, protect the doors and windows and other items, and avoid cross construction during construction to prevent mutual pollution Texture coating construction environment: ensure that the ambient temperature should be above 5 ℃, the relative humidity should be less than 80%, the construction is not allowed in the windy weather above level 4, the construction is not allowed in the foggy weather, rainy day or the weather that is about to rain, and pay more attention to the weather forecast before construction 3 The texture coating itself in the hair flower market is various, and the texture coating made by different manufacturers are different Most manufacturers use color paste to color, and the performance and weather resistance of each color paste are different Using low-grade color paste or organic color paste is easy to fade and cause flower There are also some factories that use natural color sand to color textured coating with rich and realistic colors, which gives people a good visual effect However, because it is made from natural stone ore crushing, the natural mineral resources are limited, and the color difference in different mining areas is large, which makes the color difference between different batches of textured coating The artificial color sand is rich in color, and the problem of color difference is very small The properties of the base material used in the texture paint are quite different The low grade emulsion is also not good in water and weather resistance After being exposed to the weather, the low temperature emulsion will turn white and yellowed Solution: the project budget in the early stage is very important during the construction of texture coating project The quantity of texture coating on each wall is calculated according to the consumption per square meter, and the order batch of texture coating is minimized Because in the production of texture coating, there is no color difference between the materials from the same batch, and there may be color difference between batches During the construction, try to avoid different batches of materials from the same wall construction As far as the texture coating is concerned, it is necessary to use the emulsion with pure acrylic properties as best as possible In view of the cost problem, most manufacturers use styrene acrylic emulsion, but choose the emulsion with high cost performance as far as possible when choosing the emulsion, or use styrene acrylic emulsion and pure acrylic emulsion In the use of texture coating, too much water should be avoided, because texture coating is toned with color paste, too much water after construction is also easy to cause texture coating flowers 4 The textured coating caused by the covering is the effect of sand accumulation in people's vision It has strong texture and rough surface The defect is that it is easy to accumulate ash in the natural environment and not easy to clean In order to improve its stain resistance, usually after the texture coating is completely dry, the surface is covered with a layer of varnish, but the varnish usually has a certain luster When the texture coating is applied, it is impossible to achieve the same surface roughness of all parts, and some parts are relatively smooth After the varnish is covered, the surface luster can be improved and the degree of blooming can be deepened Solution: spray construction shall be used as far as possible when covering the surface If roll coating is used, roll coating shall be uniform During the construction of texture coating, the surface generally has different film-forming and density When the varnish is covered, the hair will be heavily felt coated, so do not cover the surface too thick It should be noted that the construction must be carried out after the texture coating is completely dry Because of the good sealing property of varnish, if the texture coating is not dry, the surface will make the moisture and additives in the texture coating volatilize and make the texture coating film empty and foaming Try to use varnish with low gloss or extinction when selecting finish varnish 5 The aggregate of peeling, cracking, hollowing, powdering and falling off texture coating is sand, which is much thicker than the coating of emulsion paint Some problems are easily caused when the construction is improper or the product quality is not good First of all, when the base maintenance is not up to standard, the construction of texture coating on the thermal insulation base or in the case of light and strong wind will make the surface of texture coating dry too fast and seal the base moisture and additives inside without volatilization, resulting in hollowing, peeling and cracking of texture coating layer When the temperature is too low, the construction will make the texture coating unable to form film or the film forming is not good, which will cause problems and hidden dangers in the project Although some additives can reduce the minimum film-forming temperature of the textured coating, when the temperature is too low, the film can not be formed or the film-forming is not good, and the weatherability of the textured coating is particularly poor, which is prone to pulverization and falling off Solution: texture coating construction should try to avoid direct sunlight or wind surface operation Construction is not allowed when the ambient temperature is lower than 5 ℃ Construction in winter shall be avoided as far as possible Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,