With the arrival of winter, the temperature of most parts of the country has dropped and the air is dry, which makes it difficult to construct epoxy floor coatings. The construction temperature of epoxy floor coatings is generally required to be above 5 degrees and the humidity is below 85%, otherwise it is not suitable for construction. And below 5 degrees, the actual effect of epoxy floor coating is difficult to guarantee. In the winter of northern China, the temperature below 5 is very common, so in this environment, what problems will be encountered in the construction of the floor? 首先来了解一下为什么低温环境下环氧地坪会难以施工：
First of all, to understand why the epoxy floor in low temperature environment will be difficult to construct:
1, slow down the paint reaction.
In the construction of two-component floor coating, it is necessary to mix the components A and B proportionally in the field, mix evenly, and make the two components fully react, so as to ensure the effect of the floor. However, if the temperature is lower than 5 C, the reaction will be reduced or slowed down, which will seriously affect the curing performance of floor coatings. Decreased curing performance will result in a slow drying of the film surface, which will increase the possibility that the film will be contaminated by dust, debris, or insects (flies, mosquitoes).
2, viscosity increases exponentially.
Solventless self leveling coatings ensure smoothness of the floor by leveling. But at low temperatures, the viscosity of the floor coating will increase exponentially and the leveling performance will be reduced. However, without leveling coating, the defect of trowel marks will appear when scraping because of the poor flow and leveling performance.
3, reduce the quality of coating.
The strength, hardness and wear resistance of the coatings will be reduced due to the slowdown of curing reaction or the failure of curing, and the problems of floor detachment will occur more easily, which will seriously affect the service life of epoxy floor.
According to the above questions, we can solve this problem.
1. Separate the low temperature period: When constructing the epoxy floor, it should be constructed from 10:00 a.m. to 3:00 p.m. in the daytime, and try to isolate the low temperature period to minimize the impact of low temperature.
2. Increase room temperature: you can raise the indoor temperature, you can also carry out the construction of epoxy floor paint in winter. Northern conditional can supply heating before and during the construction of epoxy floor paint.
3. Solvent addition: In order to solve the problem of high viscosity at low temperature and lack of fluidity and difficult stirring, solvents with less than 5% volatilization rate can be added, such as acetone, ethyl acetate, butyl acetate and so on, so as to increase the fluidity of floor paint.
4. Must mix evenly during construction, because low temperature will make solidification time longer, so it is necessary to make sure that the paint has dried thoroughly before the construction of the second paint.
In order to achieve the same ideal construction effect in low temperature environment and avoid the appearance of drawbacks of paint film, we need to pay attention to many aspects:
1. Winter construction should pay attention to: first, close doors and windows, so that on the one hand can ensure indoor temperature, on the other hand, can also avoid outdoor wind and sand blowing to the dry ground, rough and uneven phenomenon. When the paint is fully dried, open doors and windows to ventilate and pay attention to time.
2. Oil workers should brush all kinds of coatings strictly according to the temperature and humidity in the product description. The temperature and humidity of the application environment should not be lower than 5 C and should not be greater than 80%. Among them, the ambient temperature of the commonly used mixed color coatings should be above 0 while the ambient temperature of varnish should not be below 8.
3. If putty or water ash is used in solid-color paint process, it should not be scratched and painted too thick, and it must be thoroughly polished after drying to achieve: flat ground, nail buckle can not remove paint, smooth handle, otherwise it will lead to cracking and peeling phenomenon.
4. When painting all kinds of coatings, we should strictly follow the requirements of the product description and strictly control the dilution ratio.
5. In cold winter, workers are accustomed to smoking or lighting a fire for heating. At this time, they must pay attention to safety awareness and stop lighting a fire or smoking near the place where the paint is stacked. Otherwise, once ignited, the barreled paint may cause explosion.
6, strictly prohibit one-off thick coating to prevent excessive spraying resulting in whitening, foaming and pinholes.
7, the substrate must be effectively sealed before construction to avoid whitening and falling off.
8. It is strictly forbidden to use excessive curing agent to improve drying speed, otherwise it is easy to cause the film to be too brittle and crack. It is not recommended to use fast curing agents. When the temperature is low, some manufacturers excessively pursue drying speed and use curing agent with too fast drying speed, which will lead to film cracking, Yin and Yang surface, loss of gloss and other drawbacks.
9. Please use the matching products. As the temperature becomes colder, pay attention to the matching use of winter diluents to reduce unnecessary losses caused by poor matching.
10. Use Van trucks to transport construction materials, water-borne coatings and glues. Use thermal insulation materials to avoid freezing damage. Water-borne coatings and glues should be stored in rooms with high temperatures. Avoid putting them on balconies and northbound rooms to prevent frost damage.
The traditional concept that winter construction is not suitable, in fact, because there are many inconveniences, not can not be constructed, we will find out the problems encountered before construction, from all aspects of prevention, grasp the scale, winter construction will have unexpected results.
标签:   环氧地坪 地坪 环氧地坪漆 环氧地坪施工 环氧地坪翻新