What are the characteristics of waterproof and breathable membranes? What is a waterproof breathable

Characteristics of waterproof and breathable membranes:

1. Air tightness: In 2005, the National Institute of Standards and Technology (NIST) released a report entitled "Investigation on the Impact of Air Tightness of Commercial Building Envelope on HVAC (Heating, Ventilation and Air Conditioning) Energy Utilization", which showed that the use of waterproof and breathable membranes can save up to 40% of the energy cost of heating and cooling in buildings without waterproof and breathable membranes.

2. Waterproof and breathable principle: the working principle of air permeability can be divided into two kinds: microporous and hydrophilic groups, and the Hausrep waterproof breathable membrane is the former, because the minimum diameter of water droplets is 20 microns, and the diameter of water vapor is only about microns, there is a huge difference in the diameter of the two, water vapor can pass through the microporous membrane, and liquid water can not pass through because of its surface tension, which prevents the penetration of water and makes the breathable membrane have the function of waterproof.

3. Waterproof and breathable effect: when the cold and hot temperature difference produces condensation, water droplets will be formed on the surface of the roof or wall, and the water droplets will enter the building or insulation layer, which will reduce the thermal effect of the insulation layer. And it is easy to make the insulation layer moldy, affecting the durability of the insulation layer and the building.

After the waterproof and breathable membrane is paved, the water vapor can be smoothly discharged through the waterproof and breathable membrane, keeping the insulation layer and the building dry and breathable.

4. Thermal insulation: Under the auspices of the National Construction Engineering Quality Supervision and Inspection Center, a thermal test was carried out on an external thermal insulation system of waterproof and breathable membrane with hanging net plastering. The test results show that the thermal resistance value of the waterproof and breathable membrane with a three-centimeter air layer can reach, which is equivalent to twice the thermal resistance value of the general air of the same thickness specified in the "Design Code for Civil Builders GB50176", and 43% of the EPS insulation board, and the thermal insulation effect is remarkable.

5. Reduce the project cost: the waterproof and breathable membrane protects the insulation layer, and there is no need to make fine stone concrete or coated film waterproof materials on the insulation layer, which can reduce the project cost.

6. Environmental protection and energy saving: reduce the heat loss of the building in winter, isolate the external hot air in summer, and play a good role in protecting the building.

Waterproof and breathable membrane.

1.Waterproof: Micron micropores, the pore size is 10,000 times smaller than that of water droplets, so that water cannot pass through, effectively protect sensitive parts, avoid liquid erosion, and improve the service life of the product.

2.Breathable: The microporous pore size is 700 times larger than that of water vapor, which is waterproof and allows air to pass through smoothly, which can effectively dissipate heat, prevent fogging on the inner wall of the product, and balance the air pressure in the internal and external spaces.

3.Dustproof: The microporous channel forms a network three-dimensional structure in the membrane, and the uniform and dense microporous distribution makes the dust encounter the barrier and achieve an effective dust-proof effect, and the smallest micron particles can be captured.

4.The cross-sectional micropore size of the membrane is larger than the micropore size on its surface, and the longitudinal and transverse microporosity are also different, and the longitudinal micropore is larger than the transverse micropore. 5.

The cross-section of the membrane is a network structure, and there are very complex changes such as network communication, hole inlay, and pore bending in the three-dimensional structure of the hole, and there may be multiple micropores to form a channel, or a microporous hole may be connected to multiple channels.

Waterproof and breathable membrane: a new type of polymer waterproof material.

High temperature resistance - the waterproof and breathable membrane can be used at an operating temperature of up to 250 °C.

Low temperature resistance - waterproof and breathable membrane has good mechanical toughness; Even when the temperature drops to -196, the elongation of 5% can be maintained.

Corrosion-resistant – waterproof and breathable membrane.

It is inert to most chemicals and solvents, and can resist strong acids and alkalis, water and various organic solvents.

Weather-resistant – waterproof and breathable membranes have a very good aging life in plastics.

High lubrication – waterproof and breathable membranes are one of the lowest coefficients of friction among solid materials.

Non-adhesion—The waterproof and breathable membrane is one of the solid materials with very little surface tension and does not adhere to any substance.

Non-toxic - the waterproof and breathable membrane is physiologically inert, and there is no adverse reaction when implanted in the body for a long time as artificial blood vessels and organs.

Performance and benefits of waterproof and breathable membranes.

Under the environmental requirements of building energy conservation and environmental protection, a large number of thermal insulation products have come out, and waterproof and breathable membranes are one of them. The function of the waterproof and breathable membrane is to protect the external insulation of the building. First of all, the waterproof and breathable membrane is waterproof, which can prevent external water from entering the maintenance structure of the building, so that the maintenance structure appears moldy, degummed, and falling, and protects the safety of the user's life.

Second, it is breathable. The unique microporous structure of the waterproof and breathable membrane makes it breathable. The building envelope will inevitably enter the moisture in the process of use, even if the seal is particularly good, it will form moisture in the envelope because of condensation, and if the moisture is not discharged in time, it will affect the normal use of the building insulation layer, so the waterproof and breathable membrane protects the usability of the external insulation layer of the building well.

The waterproof and breathable principle of the waterproof and breathable membrane of Panzhu: the working principle of breathability can be divided into two kinds of microporous and hydrophilic groups, and the waterproof and breathable membrane of Panzhu is the former, because the minimum diameter of the water droplet is 20 microns, and the diameter of the water vapor is only about microns, there is a huge difference in the diameter of the two, the water vapor can pass through the microporous membrane, and the liquid water can not pass through because of its surface tension, which prevents the penetration of water and makes the breathable membrane have the function of waterproofing.

Advantages of waterproof and breathable membranes:

1. Environmental protection --- based on the protection of the insulation layer by the above-mentioned waterproof and breathable membrane, which greatly increases the service life of the insulation layer and saves the resources of the insulation layer.

2. Energy Conservation --- The National Institute of Standards and Technology (NIST) of the United States released a report entitled "Investigation on the Impact of Air Tightness of Commercial Building Envelope on HVAC (Heating, Ventilation and Air Conditioning) Energy Utilization" in 2005, which shows that the use of waterproof and breathable membranes can save up to about 40% of the energy cost of heating and cooling in buildings without waterproof and breathable membranes.

3. The healthy --- waterproof and breathable membrane can allow the house to breathe freely, eliminate mildew and rot inside the room, and enable the users of the house to have a free breathing space.

The waterproof and breathable membrane is made of EPTFE expanded stretch extension. After being stretched, the EPTFE waterproof and breathable membrane forms a network structure in the three-dimensional direction, and the waterproof and breathable membrane is formed.

There are more than 9 billion micropores per square inch of the surface. Excellent stretching technology keeps the diameter of the micropore between microns. It is much smaller than more than 10,000 times smaller than water droplets, so that the EPTFE waterproof breathable membrane has excellent water blocking performance (exceeding the waterproof requirements of the IP67 standard), and small water droplets (light mist) cannot pass through the membrane.

At the same time, the diameter of the micropores of the waterproof and breathable membrane is more than 700 times larger than that of water vapor molecules. Therefore, while the waterproof and breathable membrane has super waterproof (and prevents oil, dust, bacteria, etc.), it can also allow gas molecules to easily pass through the micropores on the membrane, so as to achieve the function of air pressure balance. Therefore, it can eliminate the negative pressure water absorption caused by the influence of flatulence and shrinkage stress, and solve the fog problem.

Waterproof breathable membrane (PUW breathable membrane) is a new type of polymer waterproof material. In terms of production process, the technical requirements of waterproof and breathable membranes are much higher than those of general waterproof materials; At the same time, from the point of view of quality, the waterproof breathable membrane also has functional characteristics that other waterproof materials do not have.

The functions of PUW waterproof and breathable membrane are as follows:

1. Waterproof, dustproof, oil-proof, protection level up to IP69K.

2. Prevent condensation and fogging, and improve the service life of the product.

3. Heat dissipation and balance the pressure difference. Improve product integrity.

4. Chemical resistance, high and low temperature resistance, aging resistance, etc., to improve the reliability of the product in harsh environments.

The water vapor of the Volp membrane may be leaked through the membrane and can also act as a waterproof and protect the insulation material from moisture.

Waterproof and breathable membrane: a new type of polymer waterproof material.

Waterproof air barrier and waterproof breathable membrane in a nutshell:

Waterproof air barrier film is a waterproof and impermeable membrane, waterproof air barrier film is mostly used in buildings, playing the role of moisture and vapor insulation;

Waterproof and breathable membrane is a waterproof and breathable membrane, waterproof and breathable membrane is widely used, can be used in buildings, can also be used in electronic products, the application of electronic products is mainly to protect the inside of electronic products from the influence of water vapor, while releasing the unbalanced air pressure inside electronic products.

Waterproof and vapor permeable membrane, a new type of polymer waterproof and vapor permeable material. From the process point of view, the technical requirements of waterproof and vapor permeable membrane are much higher than that of general waterproof materials. Its working principle is microporous vapor permeability, because the minimum diameter of water droplets is about 20 microns, and the diameter of water vapor molecules is only about microns, there is a huge difference in the diameter of the two, water vapor is discharged through micropores using the principle of diffusion, and liquid water or water droplets can not be discharged, so it can play the role of waterproof and vapor permeability.

The vapor barrier film, laid on the foundation, not only strengthens the water tightness of the building, but also prevents indoor moisture from soaking into the insulation layer, protects the insulation layer from erosion, and greatly improves the insulation effect and service life.

The combination of vapor barrier film and waterproof vapor permeable membrane can effectively prevent mold and condensation from generating in the envelope of the wall or roof, and prolong the service life of the building.

Waterproof and breathable membrane.

It is not the same, the simplest difference is in terms of steam permeability, the moisture-proof vapor barrier film is generally inside the insulation layer, almost impermeable, and the waterproof breathable film is generally outside the insulation layer, with a high air permeability, which can make the water vapor in the structure be discharged, and can also play a waterproof role. I hope my answer will help you!

1. The waterproof air barrier membrane has a very good effect on waterproofing, but the water vapor in the building structure cannot be volatilized, and the metal roof will definitely rust in the long run.

2. The waterproof and breathable membrane can be said to be an upgraded version of the airproof membrane, which can not only effectively waterproof, but also release water vapor and prevent metal rust.

The company is located in Hai'an, Jiangsu, a developed new energy material industry cluster in the Yangtze River Delta of China, is a professional manufacturer of energy-saving building waterproof materials, product research and development as the core business of professional production enterprises.

The supply and demand of steel structures can be released free of charge on the China Construction Steel Structure Trading Network, and there is a special person responsible for promoting.

1. What are the specifications of the waterproof and breathable membrane?

1. TPU transparent film specifications: thickness mm. 2. TPU hot melt adhesive film specifications:

Thickness millimeters, millimeters. 3. TPU waterproof and breathable film specifications: thickness mm.

4. TPU high and low temperature film specifications: thickness mm, mm. Wait a minute.

2. What are the functions of waterproof and breathable membranes?

1. The waterproof and breathable membrane can effectively block ultraviolet rays, and at the same time, it has high chemical inertness, even if the temperature is very high, it can also resist well.

2. When some parts are covered with waterproof and breathable membranes, they will no longer be disturbed by the weather, even if it is a heavy rainstorm, the parts will not be much of a threat if they are immersed in rainwater for a long time.

3. The parts protected by the waterproof and breathable membrane are very simple to clean. In addition, even if there are highly corrosive items in its vicinity, it will not interfere with them, ensuring that they have the performance they deserve.

4. The waterproof and breathable membrane is very lightweight, the thickness is also very small, the production and design are very convenient, and its hidden erasity is also relatively strong.

5. The waterproof and breathable membrane can balance the air pressure around the periphery, and can prevent the entry of air and water after the construction is closed, so as to ensure the integrity of the building.

6. After adding a layer of waterproof and breathable membrane to the parts, it can effectively block the entry of water and salt, so as to ensure that it will not be damaged and the service life will be enhanced.

What are the specifications of waterproof and breathable membranes, and what are the functions of waterproof and breathable membranes, I will introduce them here first, do you understand them? There are many specifications of waterproof and breathable membranes, and they have strong functionality, but they should be used carefully so as not to affect their function and bring unnecessary trouble.

Waterproof and breathable membrane, also known as Hausrip breathable membrane, breathing paper is another innovation in energy conservation and environmental protection in the field of construction. The breathable membrane is made of environmentally friendly materials that can be used, and its special fiber structure can provide unique vapor permeability while blocking the invasion of wind and rain on the building structure, strengthening the air tightness and water tightness of the building, so that the water vapor inside the enclosure structure can be quickly discharged, effectively avoiding the formation of mold and condensation, and protecting the thermal performance of the enclosure structure, so as to save energy consumption, improve the durability of the building, and maintain the living environment.

Because the waterproof and vapor permeable membrane is used more in metal roofs, electric welding is used more in the construction process, and accidents caused by illegal operations by workers are not uncommon every year. As a waterproof vapor permeable membrane made of polymer plastics, if there is a lot of on-site construction welding and it is relatively close to the waterproof vapor permeable membrane, we recommend that you use a flame-retardant waterproof vapor permeable membrane. The flame retardant effect can be self-extinguishing when leaving the fire to meet the fire protection requirements of the construction.