MS sealant stands out under the "double carbon" and "double control" policy
Currently on the market within the household of sealant types much more special, can be divided into solvent and non solvent adhesive outfit, the solvent sealant domestic outfit are unsaturated polyester rubber, neoprene, acrylic acid, and the SBS (styrene - butadiene - styrene block copolymer), such as category, because they contain benzene, esters, hydrocarbons and other organic solvents, poses a great threat to people's health, And easy to pollute the environment. With people's attention to their own living environment and health, solvent-based internal sealant is gradually eliminated by the market, non-solvent-based home sealant occupies most of the market.
In 2022, in the process of steadily advancing the dual carbon plan, we will gradually shift from "dual control" of energy consumption to "dual control" of total carbon emission and intensity. It is foreseeable that in the future development trend of the construction industry, green will definitely become the bright "background" of the reform and development of the construction industry. The realization of green building development, must "material first", green building is an important breakthrough of low carbon emission reduction, green material is the leading support of green building. Among them, as an integral part of building bonding and sealing, whether sealant has the nature of green environmental protection has also become an important reference factor for customers to choose.
In the market of non-solvent-based home decoration sealant, silicone sealant occupies the mainstream market share. However, the quality of silicone rubber on the market is uneven, especially affected by the epidemic and double carbon, double control and other factors, the price of the main raw materials of sealant fluctuates significantly, some bad silicone sealant manufacturers in order to reduce costs, the production of oil filled rubber has been criticized by the industry for a long time, but the price is low.
Oil filled rubber refers to the bad filling, with cheap mineral oil instead of the higher price of silicone raw materials produced by silicone sealant, VOC content is high. On the one hand, due to the large use of cheap mineral oil, resulting in the service life of sealant is not guaranteed; On the other hand, the content of silicone polymers in oil-filled rubber is low, and mineral oil will penetrate out after a period of time, resulting in poor aging resistance, which may harden, lose elasticity and serious degumming in a short period of time.
With the increasingly upsurge of environmental protection and environmental protection laws and regulations, the environmental protection requirements of the industry and consumers for adhesives are getting higher and higher. At the same time, the promulgated national standard GB18583-2008 "limit of harmful substances of adhesives for interior decoration materials" and GB 33372-2020 "limit of volatile organic compounds of adhesives" strictly limit the content of harmful substances in adhesives. Therefore, the market for seeking lower VOC content, more green environmental protection, and excellent performance of home improvement adhesive voice is growing, among them, with congenital advantages of modified silane polyether adhesive (MS adhesive) will stand out.
Modified silane polyether glue (MS glue) integrated the advantages of silicone sealant and polyurethane adhesive: can be coated, strong adhesion, good weather resistance, no pollution, environmental protection, super stress relief and other excellent performance, but also make up for the shortcomings of both. And in the construction will not produce bubbles and toxic substances, especially in the construction of narrow and poor ventilation of the place, odorless, with very low VOC, can meet the requirements of green environmental protection, and more and more home decoration industry and consumers attention and favor.
MS mind mapping. PNG
Due to the use of special molecular design and polymerization process, molecular weight between 1000-15000, in organic chemistry can be regarded as very uniform, stable performance, branch chain is terminal silicyl and sealing end functional group, crosslinking density is relatively weak, therefore, the modulus is low, with appropriate stress relief ability and high elastic recovery rate. It can follow joint expansion and shear deformation caused by thermal expansion and cold contraction of structure, wind load, earthquake action, uneven settlement and other environmental influences. Polymer viscosity is low, has good low temperature construction, extrusion, superior curing performance and storage stability.
Molecular structure and crosslinking characteristics determine the performance and quality of modified silane polyether adhesive (MS adhesive), non-silicone (containing low pollution) sealant, polyurethane (containing modified polyurethane) sealant, STP hybrid adhesive can be compared, from the comprehensive performance, Modified silane polyether glue (MS glue) is the most excellent comprehensive performance, the most suitable for concrete prefabricated building sealing waterproof engineering needs.