nsulation and waterproof coat for exterior wall of high-rise building-waterproof and vapor permeable film

nsulation and waterproof coat for exterior wall of high-rise building-waterproof and vapor permeable film

Insulation and waterproof coat for exterior wall of high-rise building-waterproof and vapor permeable film

Urban high-rise buildings are rising and growing. With the increasing height of buildings, the requirements for fire prevention, fire resistance and grade of buildings are constantly increasing, and the materials for buildings are also put forward higher requirements. Building materials, which meet the requirements of fire prevention and have new insulation materials, are gradually increasing. Rock wool boards are a new type of fire protection and thermal insulation in cold regions. Material is the fireproof and warm clothing of high-rise buildings. The biggest drawback of rock wool board is absorbing water expansion. The expanded rock wool board will lose its heat preservation performance. The 9# building of Kumho elegant residential waterfront has laid a waterproof and vapor permeable membrane outside the rock wool board in order to ensure the fireproof and thermal insulation properties of rock wool board. Waterproof breathable film is a new type of polymer waterproof material. In terms of production and production technology, the technical and quality requirements of waterproof breathable film are much higher than those of ordinary waterproof materials. At the same time, from the quality point of view, waterproof breathable film also has functions and properties that other waterproof materials do not have. The special fiber structure of waterproof permeable film can prevent the erosion of building structure by wind and rain. While waterproof permeable film strengthens the air tightness and water tightness of building, its unique vapor permeability can make the water vapor inside the envelope structure expel rapidly, effectively avoid the formation of mould and condensation in the structure, protect the thermal performance of the envelope structure, so as to save energy consumption and improve the building resistance. Long-term performance, waterproof breathable film is to protect the human living environment, and perfectly solve the building waterproof, moisture-proof, vapor permeability to improve the health of human living, people-oriented, is a healthy environmental protection of new energy-saving waterproof materials. Waterproof breathable membrane is used in residential buildings and public buildings. The construction of waterproof breathable membrane is known as "breathing house".

1. Material composition and material properties of waterproof and breathable membranes. The most advanced technology in Europe is waterproof and breathable membranes. There are mainly three layers of materials for waterproof and breathable membranes.

Composition: High density spunbonded polyethylene non-woven fabric + high polymer vapor permeable membrane + high density spunbonded polyethylene non-woven fabric is produced by hot pressing. The main function of high density spunbonded polyethylene non-woven fabric in waterproof permeable film is to enhance the tensile strength and static water pressure of waterproof permeable film and protect the middle layer (macromolecule permeable film). The real permeability of waterproof permeable film depends mainly on the middle layer macromolecule permeable film.

Main advantages of material properties

2.1 Waterproof and breathable film is waterproof, and hydrophilic groups are introduced into the material of breathable polymer waterproof and breathable film, which makes the waterproof and breathable film not only have good waterproof effect, but also have better vapor permeability. The pore of the waterproof breathable membrane is curved. In the state of water vapor, the water particles are very small. According to the principle of capillary movement, water vapor can smoothly permeate the capillary to the other side, resulting in vapor transmission. When water vapor condenses into water droplets, the particles become larger and the water structure is molecular clusters. Because of the effect of surface tension of water droplets (pulling and counteracting each other), water molecules can not smoothly break away from the water droplets and penetrate to the other side, sealing the curved pore, preventing water from passing through, that is to say, preventing water from penetrating and making the vapor permeable membrane waterproof. Water vapor permeability: more than 1000g/m2.24H, hydrostatic pressure: 1.5m water column height on the waterproof permeable film, 2 hours impermeable.

2.2 The tensile strength of waterproof permeable film in both vertical and horizontal directions is increased to 200N/50mm, and the tear strength of nails and bars is over 150N, so the construction process is not easy to be damaged.

2.3 Waterproof breathable film has high temperature resistance, anti-aging, high durability, high anti-aging, flat surface, wrinkle-free, non-foaming, good composite firmness, high strength and permeability, anti-aging, high temperature resistance, can reach 80 degrees above, to ensure the durability and service life of materials, 20 years.