With the development of saving society and the continuous improvement of energy saving and emission reduction requirements, building exterior wall insulation has become a necessity for modern buildings. Building external wall insulation can not only achieve the purpose of energy saving and consumption reduction, but also an effective protection of external walls. Vacuum insulation board is a new type of external wall insulation material developed after traditional insulation materials. Vacuum insulation board is a new type of insulation material made of core material and high-barrier composite film through vacuuming process using space technology. Compared with traditional thermal insulation materials, the thermal conductivity is greatly reduced, and the lower value can reach below 0.002w/m.k. It has ultra-efficient thermal insulation and class A fire resistance. Although vacuum insulation panels have been widely used in recent years, because they are new materials, they are relatively rarely used. What matters should be paid attention to when pasting and constructing? Let’s just say it briefly.
Building exterior wall insulation is a systematic project. Before the construction of vacuum insulation panels, the base surface should be cleaned to ensure that the base surface is free of dust, stains or other impurities. It should be noted that the flatness of the base surface and the verticality of the interior are not greater than 5mm. Ensure that the base surface is normal moisture. Before the vacuum insulation board is pasted, mark the door and window horizontal lines, vertical control lines, shrinking lines and decorative lines on the wall, so that the construction personnel can grasp the flatness and verticality of the outer wall and ensure that the construction quality requirements are met. Fill in the adhesive mortar according to the proportion. The bonding mortar is the key to sticking the vacuum insulation panel to the wall. It has certain thermal insulation performance, high compressive strength, strong adhesion, strong adhesion, freeze-thaw resistance, drying shrinkage and The linear change rate of water intrusion is small, and it is not easy to hollow and crack. In order to avoid problems such as hollowing, cracking and falling off of the vacuum insulation panel of the outer wall insulation layer, the following points should be paid attention to:
1. The bonding mortar must meet the quality requirements, and the configuration consistency is too low or the viscosity index control is inaccurate;
2. The dimensional deviation of the basic interface treatment of the thermal insulation system must meet the relevant requirements;
3. The base wall should be treated before sticking the vacuum insulation board;
4. The mixed adhesive mortar should be used up within 2 hours;
5. Use the full sticking method to coat the back of the vacuum insulation panel with adhesive mortar, and use a special sawtooth trowel to scrape out the mortar tape, and then quickly paste it on the wall;
6. Use the push-kneading extrusion method to uniformly extrude the vacuum insulation panel within a range of 20cm up and down, and then use a 2M ruler to flatten it, and clean up the extruded bonding mortar in time;
7. After pasting, leave enough time to fully harden the mortar;
8. Operate in strict accordance with the requirements of technical regulations.
As long as we strictly follow the technical specifications of vacuum insulation panels to construct and install. Make the slurry according to the actual situation. When pasting, the joints between the plates are closely aligned, and there is no looseness after the plates are pasted. Or vertical line, we can achieve the insulation effect and longevity of our design. Create a good living environment for everyone.
