Polyurethane spraying is generally suitable for Construction in winter will have little impact. However, when the temperature is low, inferior polyurethane spray has poor adhesion to the wall and looks like honeycomb cotton, which will fall off later. Today I will tell you some precautions for building polyurethane spray insulation materials in winter.
1. It is best to start with the temperature in polyurethane spraying construction: find a way to heat the wall. The worst case scenario is that a lot of heating is required. materials, or try construction around noon when temperatures are slightly warmer.
2. Avoid heat loss , do a good job of windproof treatment to avoid performance degradation during the foaming and curing process.
3. Material appearance: Pay attention to improving the reactivity, and consider the coordination of the foaming agent dosage and low temperature when mixing.
4. The construction temperature should be Above 5, the construction environment should be kept ventilated during construction and try not to construct under low temperature conditions.
5. Unused Components(especially component A), the lid must be tightly closed to prevent moisture absorption and solidification, and the mixed materials must be consumed within a certain period of time.
6. With the temperature The dissolution speed of rubber powder in polymer mortar may decrease. When preparing polymer mortar, the stirring time should be extended. The clay ratio should be used within the specified range, and the materials should not be over-mixed, otherwise the setting time will be prolonged.
The above is introduced to youPolyurethane spraying Precautions during winter construction, facing the increasingly cold weather, let’s work together Only by complying with the regulations during construction can the expected results be achieved.
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