• Categories:Industry Information
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• Time of issue:2021-07-14
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(Summary description)Paste sealant: This type of sealant is a low-grade sealant usually using three main materials: oil and resin polybutene pitch. The fixed glass commonly used to seal small windows has a maximum seam deformation of +5% or -5%. The validity period is generally 2 years. Liquid elastomer sealant: This type of sealant includes a liquid polymer that can be vulcanized into an elastic state. They have the ability to withstand repeated seam deformations. The service life of liquid elastomer sealant is generally 15 to 20 years. This type of sealant has high adhesion and shear strength and good flexibility at room temperature. The disadvantage is that the price is high. Under normal circumstances, it is necessary to mix the two-component sealant with a primer and it is sensitive to temperature and humidity when it is not convenient to vulcanize. Hot-melt sealant: Hot-melt sealant, also known as hot construction sealant, refers to a sealant based on a blend of elastomer and thermoplastic resin. Hot melt sealant can be formulated into a performance close to liquid elastic sealant, but it is superior to liquid elastomer sealant in that it does not need to add vulcanizing agent. Liquid sealant: This type of sealant is mainly used for sealing mechanical joint surfaces instead of solid sealing. The material is paper, asbestos, cork and vulcanized rubber to prevent the internal fluid of the machine from leaking from the joint surface, so liquid sealant is also called liquid gasket