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The difference between modified silicone building sealant and silicone building

Posted by sere22 on December 20th, 2019

In the connection of home improvement substrates, there is no more ground gas than the sealant. A glue gun is used to directly drive the glue into the gap to be filled, and after curing into an elastic body, a sealing effect without leaking water can be achieved. Sealants are present in toilets, countertops, windows and other parts. Among many sealants, silicone construction sealant is one of the most widely used sealants. When many people buy it on the market, they will find that modified silicone construction sealants and modified silicone construction sealants have appeared on the market. What is the difference from silicone construction sealant? As an experienced modified silicone sealant suppliers - Kingdeli introduces some knowledge about modified silicone sealant.

1.Conceptual difference

In domestic and foreign standards for building sealants, it is stated that silicone building sealants are based on polysiloxane as the main component, and modified silicone sealants are based on silane-terminated polyether as the main component. .

2.Performance difference

1) Adhesiveness. Silicone building sealants have good adhesion properties to non-porous materials such as glass and aluminum alloys, while modified silicone building sealants exhibit more excellent adhesion properties to porous materials such as concrete components and cement mortar boards.

2) Repairability and paintability. Since the silicone material itself is extremely difficult to be repaired and painted, if the sealing material of the seam itself is damaged, there is basically no way to repair it. It can only be cleaned and re-applied. There is no way to paint the surface of the seam material. Retouching, such as color paint decoration on the seams, will be very difficult. In contrast, the modified silicone building sealant has good repair and painting functions, and the surface of the joint material can be easily painted in various colors according to design requirements.

3) Seam aesthetics and durability. Due to the addition of plasticizer compounds such as silicone oil during the production process of silicone building sealants, after the construction sealant, under the influence of climatic factors, plasticizer compounds such as silicone oil are easily precipitated on the surface of the joints, and then penetrate. Adhesion to the surface of the substrate will cause the joints and the surface of the substrate to be polluted after adsorbing dust in the air, which will seriously affect the aesthetics of the building joints and the durability of the joint seal. In contrast, since no modified plasticizers such as volatile solvents or easily migrated silicone oils are added to the modified silicone building sealant, there will be no precipitation of small molecules under the influence of external climatic factors. Adsorption of dust in the air causes the joints and substrates to be polluted, which can maintain the long-term beauty of the joints in the building, completely eliminate the phenomenon of contamination on the wall, improve the durability of the joint seal, and reduce the maintenance cost of the building facade.

3.Application range

Based on the characteristics of modified silicone construction sealant suitable for sealing of porous materials, concrete joint seal is the best place for modified silicone construction sealant. The most concentrated and concentrated area of concrete joints is definitely the field of prefabricated concrete buildings. Therefore, with the rapid development of China's prefabricated housing, modified silicone building sealants will play an important role. The silicone building sealant is mainly used for ordinary decoration and non-structural of building curtain walls.

Also See: Silicone Building, Modified Silicone, Silicone Construction, Building Sealants, Silicone, Sealants, Sealant

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