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| Attention to the construction of external wall of coating agent |
Exterior wall latex paint is one of the main materials of building exterior wall decoration coating, it is applied in all kinds of buildings, because it is easy to use, rich in color, smooth and clear lines, easy to maintain and update. However, if the construction operation is not properly, or the performance of the paint is not known, or basic treatment is not good and so on, will affect the quality of the coating, exterior wall. In order to ensure the quality of exterior wall paint finishes, the following work must be done in the construction:
Pay attention to the quality of paint and other materials
Priority selection through the quality certification of products or green products, to prevent the use of fake and shoddy products, the material sampling inspection of its varieties, color is in conformity with the design and construction requirements, and should have the product performance testing report and product certificate. To classify and pile up the material, label, and be in charge of the person specially assigned for a job, establish the material approach acceptance system, and ensure the good material quality.
Pay attention to the construction of the basic level
The key to grasp the construction of the basic level lies in the strength, smoothness and cleanliness. Firstly, the water content is an important index of basic level, and different types of coatings have different requirements for different water content. Because of the poor air permeability of solvent based coatings, it is hydrophobic. Second, coated surface smoothness is poor, if there are obvious connect Cha or surface rough degree different, spray, roll, brush paint also due to unevenness of coating absorption, resulting in exterior color is not uniform, easy to form the "painted face". Furthermore, the surface of the base is not flat, of number of blows the putty, resulting in uneven thickness, wet and dry, it is easy to form a local cracking and peeling. Also level of pollution, such as falling floating dust, dirt, stripping agent, oil and other attachments, also because of poor adhesiveness of coating and base caused by facing up skin, flake, discoloration and other phenomena. Therefore, it is necessary to ensure that the grassroots surface cleaning.
Pay attention to the temperature and humidity of the construction environment
All kinds of coatings can be formed under certain temperature conditions, so it is suitable for the construction environment, and the suitable temperature is beneficial to the dry and film coating. If construction when the ambient temperature is too low or too high, the lower the technical specifications of the coating, creates the coating film forming bad that to achieve uniform surface and coating cracking, powdering, encounter water shedding, seriously affect the appearance of the buildings and facing life. Therefore, it should be strictly controlled by the minimum construction temperature and humidity, paint engineering construction environment should be selected from 5 to 35 degrees Celsius, and ventilation is good, so that both can accelerate the process of the conjunctiva, and the health of the operator.
With the development of new products, the type of paint is also increasing, especially for new product technical standards, the use of functions should be correctly according to the requirements of the use of manual construction, must not be the experience. It should also be stressed that the coating film is not in a moment can be completed, there is a process, and therefore requires not only in the construction of the minimum construction temperature requirements, but also in a period of time after the construction should meet the temperature requirements. If the abnormal conditions of the climate change, the corresponding protective measures should be taken to ensure the quality of the coating. |
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