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Polysulfide sealant_two-component polysulfide sealant
What should be paid attention to when using polysulfide sealing paste in the deformation joint, and many users may not be very clear, so let us polysulfide sealing paste manufacturers answer it for you!
Deformation seam treatment before applying polysulfide sealing paste
1. Deformation joints that have been processed at the base level are blown away with dust and residual residue in the joints by an air compressor.
2. For the non-sealed areas on both sides of the deformation joint, before the construction, affix 20-30mm wide protective tape at 10mm on both sides to prevent the surface of the structure from being contaminated by excess polysulfide glue during construction.
3. After the foundation surface is cleaned up, the supervisor will be notified of the acceptance of the foundation surface in time after the self-inspection is passed, and the next step of construction can be carried out after the acceptance is passed. hsyfxj2345631
Polysulfide sealing paste configuration process
1. Material configuration and use instructions of the primer: This product is composed of two components, A and B. When used, mix the A component (colorless and transparent) with the B group (red brown) at 1: 1, use The brush is applied on the glue injection base on both sides of the deformation joint. After the primer surface on the base is dry, the glue can be injected. (Note: The primer on the base surface must be dry before pouring the glue, otherwise it will seriously affect the adhesion. The product is volatile, the two components are packaged separately, and the storage period is one year under a sealed condition. The primer requirements after mixing Used up at once.)
2. Material configuration of two-component polysulfide rubber
Material ratio: A component (white base paste) is hereinafter referred to as A; A: B = 10: 1 preparation (manufacturers have finished the proportioning before leaving the factory, no need to repeat weighing on site).
Mixing: Open the lid of the component A sub-package drum, add the component B to the A-component drum, use a hammer to insert the stirring tool, start the low speed switch, stir from top to bottom for 3 minutes, and then start the medium speed switch , Stir for 5 to 8 minutes until the color of the compound is uniform, then complete the preparation and mixing process.
The key quality control procedures in the sealant construction process are as follows:
The sealing interface of the deformation joint must be surface-treated with a hand-held grinding wheel or steel brush, and if necessary, treated with a cutting machine to ensure that the bonding interface is dry, clean, free of oil and dust, and exposes a hard structural layer. The sealant should be fully mixed, and the two components should be mixed until the color is uniform. Before applying the glue, first brush the primer on the glued surface, then manually apply a layer of glue and squeeze it repeatedly before applying glue.
The mixed sealant must be used up within the required time, and the compound beyond the adaptation period cannot be used with the newly mixed sealant. In the process of gluing, the colloidal lap should be constructed in strict accordance with the requirements of the lap process. Pay attention to proceed from one direction in the glue application project, and ensure that the glue layer is dense to avoid bubbles and lack of glue. The adhesive layer should be cured before being completely vulcanized, and should not be soaked in water or artificially damaged. Before the construction, make a technical explanation. The construction team requires a clear division of labor, practically implements every link to everyone, and strengthens the quality and responsibility education and implementation of construction personnel.
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