MS sealants arecommon in sealing materials installed in prefabricated buildings. So, what exactly is prefabricated construction? Prefabricated buildings are assembled like building blocks, with concrete components made in a factory and then transported and installed on-site.
What’s the relationship between prefabricated buildings and MS sealants?
Because prefabricated buildings are assembled from factory-fabricated components, gaps between these components are inevitable, making it crucial to fill these gaps. MS sealant differs from traditional sealants in that it is a silicone-modified polyether sealant. Its unique structure combines terminal silicon groups with main-chain polyether bonds. It combines the high adhesion of polyurethane sealants with the excellent elasticity and weather resistance of silicone sealants. For this reason, hybrid silicone sealants have become a key choice for builders and contractors, providing a more reliable and durable sealing solution for prefabricated buildings.
What are the advantages of MS sealant over traditional sealants for prefabricated buildings?
1. High elastic recovery and strong displacement capacity
Concrete slab joints can expand, contract, deform, and shift due to temperature fluctuations, concrete shrinkage, slight building vibrations, or settlement. To prevent cracking and ensure a secure and reliable bond and seal, the sealant must exhibit a certain degree of elasticity, allowing it to expand and contract freely with the opening and closing of the joint to maintain a tight seal. The sealant’s displacement capacity must be greater than the relative displacement of the slab joint, ensuring it will not tear during repeated deformation cycles and remain durable. Testing has shown that the elastic recovery rate, displacement capacity, and tensile modulus of Гибридный герметик ms exceed standard requirements, demonstrating excellent mechanical properties.
2. Excellent weather resistance
With excellent resistance to UV rays, acids, alkalis, and extreme temperatures, it is suitable for outdoor use in harsh environments, boasting a service life exceeding 30 years.
3. Strong paintability and environmentally friendly
Precast MS sealant combines the advantages of both polyurethane and silicone sealants, overcoming the shortcomings of polysulfide sealants, such as slow low-temperature curing, aging and hardening, limited durability, and a strong pungent odor. Furthermore, unlike silicone sealants, which easily exude oily liquids from the adhesive layer and contaminate concrete, stone, and other decorative materials, MS sealant offers excellent paintability and is environmentally friendly, further promoting the development and advancement of sealants for prefabricated buildings.
In general, prefabricated construction is a growing trend in building models. Selecting the right sealant is crucial for the safety of the entire prefab building system.
Tengyu commits to providing customers with professional solutions for sealing and bonding prefabricated buildings. Contact an MS polymer manufacturer for customized precast concrete joint sealant solutions.