What are the classifications of waterproof and breathable membranes, what is waterproof and breathab

The basic function of waterproof and breathable membranes is the same: waterproof and breathable.

There are different classifications of waterproof and breathable membranes, and there are many classifications:

ipx1、ipx1、

If it is divided according to the waterproof level of the waterproof and breathable membrane, ipx1, ipx2, ipx3, ipx4, ipx5, ipx6, ipx7, ipx8, ipx9;

According to the different industries used in waterproof and breathable membranes, there are waterproof and breathable membranes for the construction industry, waterproof and breathable membranes for the electronics industry, waterproof and breathable membranes for the chemical industry, etc.;

According to the air permeability of the waterproof breathable membrane, there are low air permeability, medium air permeability, high air permeability, and ultra-high air permeability;

In addition, there are classification methods according to the thickness of the waterproof and breathable membrane, hydrophilic performance, etc.

Different brands have different classifications of waterproof and breathable membranes.

The basic functions are the same: waterproof + breathable;

The lack of power depends on the specific parameters: thickness, waterproof performance and air permeability;

Let's talk about DuPont in a nutshell, the quality is still very good. It is divided into: standard type, reinforced type, reflective type, enhanced reflective type, and fire resistance. At present, only DuPont should be able to achieve fire prevention and waterproof and breathable at the same time, which can be tested with a simple instrument.

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.

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.

Summary. Dear, hello, waterproof breathable membrane in the state of water vapor, the water particles are very fine, according to the principle of capillary movement, can smoothly penetrate into the capillary to the other side, so that the phenomenon of vapor permeability occurs. When the water vapor condenses into water droplets, the particles become larger, and due to the effect of the surface tension of the water droplets (water molecules "pull and fight" with each other), the water molecules cannot smoothly break away from the water droplets and penetrate to the other side, that is, the water infiltration is prevented, so that it has the function of waterproofing.

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<> dear, hello, the anti-stuffy breathable membrane is not according to the thickness, and the rolling slippery reed is distinguished according to the gram weight. The first waterproof and breathable membrane to enter the Chinese market is DuPont in the United States.

Dear, hello, the waterproof breathable membrane in the state of water vapor, the water particles are very fine, according to the principle of capillary movement, can smoothly penetrate into the capillary to the other side, so that the phenomenon of vapor permeability occurs. When the water vapor condenses into water droplets, the particles become larger, due to the effect of the surface tension of the hydroponic beads (water molecules "pull and fight" with each other), the water molecules can not smoothly break away from the water and penetrate into the other side, that is, to prevent the infiltration of water, so that it has the function of waterproofing.

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The material of waterproof breathable membrane is generally polytetrafluoroethylene (E-PTFE), EPTFE is a new type of waterproof and breathable material, waterproof and breathable membrane has three major functions: waterproof: micron micropores, pore size is less than 10,000 times that of water droplets, so that water can not pass through, effectively protect sensitive parts, avoid liquid erosion, and improve the service life of the product.

Waterproof and breathable membranes can be used in electronic products with waterproof needs, such as sensors, outdoor lights, auto parts, batteries, and some small household appliances such as electric toothbrushes, shavers and other electronic products.

The waterproof and breathable membrane is a polymer compound made of tetrafluoroethylene polymerization, which has excellent chemical stability and corrosion resistance (it is one of the best corrosion resistant materials in the world today.

In addition to molten metal sodium and liquid fluorine, it can resist all other chemicals, and it does not change when boiled in aqua regia, and is widely used in various types of applications that require resistance to acid, alkali and organic solvents), sealing, high lubrication and non-stickiness, electrical insulation and good anti-aging endurance, excellent temperature resistance (can work for a long time at temperatures from +250 to -180).

Advantages of use: High temperature resistance - operating temperature up to 250 °C.

Low temperature resistance - with good mechanical toughness; Even when the temperature drops to -196, the elongation of 5% can be maintained.

Corrosion-resistant - inert to most chemicals and solvents, resistant to strong acids and alkalis, water and various organic solvents.

Weather-resistant – has the best aging life of any plastic.

High lubrication – the lowest coefficient of friction among solid materials.

Non-adhesion – is the smallest surface tension in a solid material and does not adhere to any substance.

Non-toxic - physiologically inert, as artificial blood vessels and organs implanted in the body for a long time without adverse reactions.

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

The waterproof and breathable membrane is a polymer compound made of tetrafluoroethylene polymerization, which has excellent chemical stability and corrosion resistance (it is one of the best corrosion resistant materials in the world today.

Depending on what material you are looking for to make of waterproof and breathable membrane, the waterproof and breathable membrane currently on the market is mainly composed of the following materials: commonly known as polytetrafluoroethylene); For example, warm baby on, building roof); Polyurethane was first used in clothing fabrics, and it is also the most widely used clothing fabrics at present, but there are also some high-end fabrics using PTFE, such as GORE-TEX fabrics).

The first PTFE is the most widely used, waterproof and breathable effect is the most obvious, it is used in all walks of life and needs to be waterproof and breathable, and it can be adjusted according to the requirements of working conditions, and the size of waterproof level and air permeability can be adjusted, I hope it will help you.

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