What is sealant? What is the role of door and window sealant? When using, what should we pay attention to? Below, follow Xiaobian to understand the next!

    Sealant refers to the adhesive used to fill the configuration gap or joint when decoration, in order to play a sealing role, and has a certain bonding strength. Door and window sealant is mainly used for the joint sealing of window frame and glass, the joint sealing of window frame and inner and outer wall, and plays a key role in the water tightness, air tightness, heat preservation, sound insulation and other aspects of doors and Windows.

    1. Incompatible

    Some auxiliary materials used in door and window assembly, such as rubber materials (rubber pad, rubber strip, etc.), usually have close contact with door and window sealant. But some rubber products, some businesses may in order to reduce costs or other considerations, will add rubber oil or other small molecular substances incompatible with the sealant system with doors and Windows.

    When this kind of rubber products contact with doors and Windows sealant, rubber oil or other small molecular substances will migrate to doors and Windows sealant, and even migrate to the surface of doors and Windows sealant. In the process of use, under the action of ultraviolet sunlight, it may lead to yellowed doors and Windows sealant, which is more obvious in the light color of doors and Windows sealant.

    2. Bad bonding

    In the application of door and window sealant, the substrate that may be contacted is glass, aluminum, cement mortar, ceramic tile, wall paint, etc. There may be oil, dust or other residual substances on the surface of these materials. If the adhesion is not confirmed before construction, it may cause poor adhesive bonding of doors and Windows.

    Attention should be paid to the pretreatment of the surface of the substrate to be glued, and the appropriate method should be used to remove the oil, dust, sand and loose layer that is easy to fall off on the surface of the substrate to be glued, so that the door and window sealant and the substrate can achieve the ideal bonding effect.

    3. Poor storage

    Doors and Windows sealant products belong to chemical products, have a certain period of storage, so they need to be used up in the storage period. If the door and window sealant has exceeded the storage period, it is very likely to cause the glue curing speed significantly slow, poor curing or even not curing phenomenon.

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