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Tips For Using Silicone Sealant

(1) Silicone sealant is one kind of sealant. It is the same system as common glass glue, that is, a substance formed from materials such as sodium silicate and silicone, silicone structural polymer. The curing mechanism of the one-component silicone sealant is achieved by reacting the cross-linking agent in the glue with the moisture in the air under the action of the catalyst, that is, by absorbing moisture in the air to achieve solidification. For this reason, the curing time and speed depend on the quality of the glue, and the external temperature and humidity also play a decisive role.Stored in a cool, dry place between 4-27 ° C in the original sealed state,
The shelf life is calculated within 6 months from the date of production. Silicone sealant use: used for general decorative joint sealing; suitable for all kinds of weatherproof sealing; suitable for adhesive sealing; suitable for bonding joint sealing; suitable for various joint sealing; suitable for joint sealing, no need Use primer; suitable for surface bonding; can be used to bond ceramics, marble, etc. Use of silicone sealant 1. Preparation and requirements before construction Temperature 4 ° C ~ 40 ° C, humidity 40% ~ 80% of the environment. Out of scope, confirm whether it can be constructed and within the warranty period. Second, the construction process 1. Cleaning the substrate: the part to be bonded should be clean, must be glued within 1 hour, or re-cleaned. 2. Apply the primer solution: Confirm whether the primer solution is required. Apply glue within 5 minutes to ensure better bonding. 3. Preparation of glue joint: The diameter of the foam rod should be larger than the width of the glue joint to avoid damage. 4. Injection The injection action should be continuous and uniform to prevent the movement from being too fast and generating bubbles. 5. Trimming: The surface of the interface is smoothed, the glue is in full contact with the interface, and the protective tape is removed. 6. Maintenance: In the early stage of curing, avoid uneven surface and cracking of the surface of the glue. If there are many gaps in the home, especially if the gap between the windows is relatively large, then it is recommended to give priority to silicone sealant when selecting the sealant, because its quality effect is the best. (2) When the single-component silicone sealant is used, the user will occasionally report that "the glue is thin, and the glue will automatically flow out after cutting the nozzle or after using the glue gun to finish the glue." According to the analysis of this situation, the following conclusions are initially drawn for the user's reference: If the glue is just cut open, it will automatically flow out. The reason is that the pressure of the ram is too large when the product is filled, which causes a little pressure in the tube. The cut-off glue will flow out with pressure, but the pressure will not be very large. It will stop if it flows out two or three millimeters and will not affect the construction. If the glue is used to finish the glue, the glue will still flow out automatically, which is related to the construction. Usually, the glue gun is manually applied by the personnel to apply pressure to the glue gun. The "drive shaft" is pushed forward to make the glue squeeze out. During the rubberizing process, the bottle body will be inflated due to the pressure. When the user stops applying pressure to the glue gun, the glue bottle is restored by the original expansion and contraction, and the inertia of the glue gun "active shaft" and the forward thrust, the glue of the glue nozzle will continue to flow out a little. Therefore, when using it, when the construction needs to stop the glue, there should be an advance amount, that is, the manual pressure should be reduced in advance when the glue is about to be finished. Immediately after completion, press the iron piece of the spring part of the glue gun by hand, so that will greatly reduce the chance of glue outflow. If the silicone sealant is uncured on the hand or on the glass, wipe it off with a clean cloth dipped in acetone or xylene or solvent #120. If the silicone sealant sticks to the hand, even if it is cured, it is not sticky, and it can be rubbed with a few hands. If the glass is glued to the glass and cured, use a blade to scrape flat.
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