External wall insulation decoration should use special silicone weather resistant sealant
With the continuous popularity of "green, energy saving, environmental protection, safety" modern new building concept, exterior wall insulation decorative plate also ushered in a continuous upgrade, now the exterior wall insulation decorative plate requirements at the same time with thermal insulation, decoration, fire, flame retardant and other performance. The curtain wall material with both decorative and thermal insulation functions formed by the combination of building thermal insulation materials and exterior wall decorative materials has changed the current form of building thermal insulation and coating field in China. The semi-finished thermal insulation, coating products directly on the assembly line to achieve finished products. This new material, with the advantages of high decoration, high weather resistance, high convenience, high economy and high safety, is in line with the current trend of promoting green energy-saving buildings, and is favored by many people. 
However, it is not enough to guarantee the quality of the simple material, but also need high quality sealant to complement each other, that is, today we want to talk about the external wall insulation decoration to use special silicone weather resistant sealant.
The silicone weatherproof sealant is used to seal the joint of the thermal insulation board, forming a complete whole, which greatly increases the waterproof, windproof and moisture-proof performance of the thermal insulation board, and thus increases the life of the thermal insulation board.
Silicone weather resistant adhesive is room temperature curing, high performance adhesive for building structure. It reacts with moisture in the air and solidifies into an elastomer that is resistant to cold, heat and corrosion. It also has UV resistance and other weather resistance, giving it a long service life. The curing process of silicone weather-resistant sealant is from the surface to the inside, the surface drying time and curing time of different characteristics of silicone glue are not the same, if you want to repair the surface, it must be carried out before silicone weather-resistant sealant dry.
According to the characteristics of the insulation board curtain wall, the following characteristics of sealant need to be paid attention to:
① Bonding property
Most plates need to be cut in the installation process, cutting surface is not conducive to the bonding of sealant, sealant needs to have better bonding
(2) Durability
Curtain wall service life is very long, sealant should also have good durability.
③ displacement capacity
Sealant needs to withstand panel materials (especially metal plates such as aluminum veneer, stainless steel, etc.) in the thermal expansion and contraction of the deformation of the plate seam.
(4) Antifouling performance
In panel materials, some are porous materials, it is necessary to pay attention to the selection of sealant will not cause penetration pollution, in the selection of pollution test to confirm the sealant used on the material's anti-pollution performance.
⑤ Green environmental protection
The state has put forward corresponding requirements for the environmental protection of building materials. For example, in the latest national standard GB 33372-2020 "VOC content Limit of Adhesives", "5.4 this type of adhesive VOC content limit requirements silicone sealant VOC content ≤100g/kg", sealant should meet this environmental standard.
In order to meet the professional requirements of sealant for thermal insulation board curtain wall, Shengqun Company has launched a special adhesive for exterior wall thermal insulation decoration engineering. This product is a single component, neutral curing silicone sealant, which has excellent durability, high displacement capacity, environmental protection and excellent bonding performance for all kinds of thermal insulation board and most building materials. It is suitable for bonding and sealing of all kinds of insulation board on the market.