Silicone Sealant in Winter Use Precautions

When using silicone sealant in winter, you need to pay attention to the following points to ensure its performance and construction effect
Construction environment: The construction of silicone sealant has strict requirements for ambient temperature and humidity. Generally, the temperature of the construction environment should be 10 ° C 40 ° C, and the relative humidity should be between 40% and 80%. In winter, due to the generally low temperature, heating measures should be taken to ensure that the construction temperature is higher than the minimum requirements. If the user has special circumstances and needs to be built in an environment slightly lower than the recommended temperature, it is recommended to carry out a small area gluing test before use, and carry out a peel bond test to confirm that the sealant solidifies and bonds well, and extend the maintenance time according to the circumstances.
Material preparation: The batches of materials used in the construction process (such as aluminum, glass, sealant, cleaning agent, primer, etc.) may vary, so every time the materials come into the plant, random field bonding tests are required.
Construction operation: When cleaning or applying primer, it should be carried out in strict accordance with the construction process to avoid local non-stick or partial poor bonding caused by inadequate operation. When gluing, it is necessary to ensure that the A and B components are evenly mixed and within the range of the mixing ratio recommended by the manufacturer. When changing the bucket, it should be noted that the exhaust is sufficient to prevent bubbles from entering the inside of the glue machine and affecting the bonding effect of the sealant.
Curing and curing: The curing process of silicone sealant is a chemical reaction process, which is affected by ambient temperature and humidity. In winter, due to the low temperature, the curing rate will slow down, so it may be necessary to extend the curing time appropriately. The curing process should be in a clean and ventilated environment, the temperature is maintained at 1040℃, and the humidity is maintained at 50%90%.
Storage and transportation: The storage temperature of silicone sealant also has certain requirements, which should usually be between 0 and 27 ° C. In winter transportation and storage, should pay attention to insulation, to avoid the temperature is too low to cause the sealant performance decline.
In short, when silicone sealant is used in winter, special attention needs to be paid to the construction environment, material preparation, construction operation, curing and maintenance, as well as storage and transportation, to ensure its performance and construction effect.