Potential problem: The sensor housing is exposed to changing temperature and pressure environment.
Temperature change, dust, dirt and moisture will have a great influence on the electronic components of the sensor. For example, the cleaning process can lead to a significant drop in the temperature of the casing of electronic equipment.
A sharp drop in temperature will result in a vacuum of 200 mbar (3 psi) or more in the enclosure.
Solution: Keep the pressure balance inside and outside the shell through constant ventilation.
In gas sensors and electrochemical sensors, Fuxiang waterproof and dustproof vent products can prevent dust, dirt or liquid from invading the sensor head. At the same time, the microporous polytetrafluoroethylene (ePTFE) membrane can let the gas pass through the membrane immediately, thus ensuring that the response speed of the sensor remains constant and preventing errors and delays in the measurement results. Therefore, the use of waterproof and dustproof vent products means that offshore electronic equipment will be better protected, with more reliable performance and longer service life.
With the development of electronic technology, the application range of sensors is getting wider and wider, and the application environment is becoming more and more diversified. Whether it is harmful gas detector or pH sensor, the volume of various electronic sensors has become smaller, but the performance must meet more stringent requirements. In many cases, the harsh working environment will quickly damage the performance of the sensor, leading to the reduction of its accuracy and service life. Waterproof and dustproof gas permeable membrane is an ideal material to protect the sensor, because it can effectively prevent the penetration of most liquids and always maintain a high permeability. The sensor with waterproof and dustproof gas permeable membrane has fast reaction speed, high measurement accuracy and more stable and reliable performance.
Fuxiang waterproof and dustproof breathable film is resistant to chemical corrosion and has a microporous structure, which is very suitable for sensor applications. It is made of expanded polytetrafluoroethylene (PTFE), which is chemically inert and can contact acid and alkali without affecting its performance. The product is hydrophobic and oleophobic and will not be soaked by most liquids, so it can maintain breathability.
Typical application
Harmful gas sensor
Odor sensor
oxygen sensor
liquid level sensor
pressure transducer
electrochemical sensor
Gas detection monitor
key property
The waterproof and dustproof safety level reaches IP69K.
Expanded PTFE breathable film with microporous structure has the following characteristics:
O hydrophobic and oleophobic
O Promote moisture and steam emission.
O extremely chemically inert
O won't fall.
O uv resistance
O extreme temperature resistance
Main advantages
Protect the sensor from pollutants, water, salt and other corrosive liquids to ensure the accurate measurement and stable performance of the sensor.
By quickly realizing the pressure balance inside and outside the sensor housing, the stress on the sealing strip of the sensor housing is reduced.
Quickly resume ventilation after contact with liquid.
The microporous membrane structure provides excellent air permeability.
Convenient installation, which brings great convenience to design and production.
Application example
Humidity/temperature sensor
Harmful gas sensor
oxygen sensor
electrochemical sensor
Gas detector/monitor
Odor sensor
liquid level sensor
pressure transducer
2, automobile waterproof and dustproof breathable film
-EPTFE, a reliable revolutionary material applied by Fuxiang Electronic Materials Company, can prolong the life of automobiles and support the demand of finding alternative energy sources. High-performance PTFE materials can be used in headlights, sensors, batteries, bearings and other components, thus improving the reliability of vehicles. Membrane holes can improve the reliability of many automobile parts, including headlights, fog lights, signal lights, engine controller (ECU)/ anti-lock braking system (ABS) modules, sensors, connectors, power window motors and fuel system components. Membrane holes can be widely used in automobiles and heavy trucks to exchange air quickly according to pressure changes caused by temperature changes. Membrane holes can also protect vehicles from water, vehicle drainage and dust pollution. All major automobile manufacturers have adopted a full range of imported film porous materials applied by Fuxiang Company.
Protective effect of breathable filter membrane
Pressure balance: reduce the stress on the seal and prolong the service life of the product.
Reduce fogging: improve reliability and prolong product service life.
Protection of breathable filter membrane (ECU, BCM)
Automobile breathable filter membrane has unique performance, which can quickly change air in response to pressure changes, that is, allow the shell to breathe. By reducing the pressure difference, the sealing fatigue and shell pressure are minimized, thus improving the reliability and prolonging the service life of the product.
The durable protection provided by the oil-proof automobile ventilation filter membrane protects the control unit exposed to the harsh environment under the hood from water, automobile oil pollution, dust and other pollutants.
Series: rubber bonded breathable film
Small and medium-sized shell
Reduce the thickness of plastic shell of breathable film to ensure more flexible design.
Suitable for manual or automatic assembly
Series: welded breathable film
Small-volume housing or connector
There are various sizes with minimum thickness to choose from.
Provide a variety of different installation methods.
Waterproof and dustproof breathable film for car lamp lighting (headlight, fog lamp, auxiliary lamp)
Automobile breathable film for pollution prevention and ventilation lighting has unique performance, which can quickly ventilate in response to pressure changes and discharge internal moisture. Oil-repellent automobile breathable filter membrane can also form a durable and reliable barrier to block water, automobile oil stains, dust and other pollutants, thus improving reliability and prolonging product service life.
Reduce fogging of headlights
Series A: car headlights Breathable Filter Membrane
Effective ventilation can greatly reduce fogging, up to 50%.
Universal installation reduces the complexity of product design.
Reliable performance, reducing test cost.
Pressure balance of tail light, fog light and auxiliary light
B series: automobile taillight breathable filter membrane
Fast pressure balance of rear combination lamp
Suitable for manual or automatic assembly
Reliable performance, reducing test cost.
Pressure balance of fog lamps
C series: automobile breathable filter membrane
Tolerance to harsh fog light environment
Quickly balance the pressure without worrying about water, dust or pollutants entering.
Suitable for manual or automatic assembly
Other application cases of waterproof and dustproof breathable film for automobile;
1, air bag
2. Motor
3. Electric rocking window device
4. Pneumatic system
3. Waterproof and dustproof breathable film for portable electronic products
Potential problems: Electronic devices are usually exposed to dust or liquid.
The use environment of portable wireless devices such as mobile phones is generally harsh, which may come into contact with water and dust, thus damaging sensitive components. In the past, engineers used various methods to make speakers, receivers and microphones of some electronic products unable to transmit sound.
Solution: Waterproof and dustproof vent products can provide dustproof and splash protection, and at the same time, it can make the sound quality transfer smooth.
Fuxiang waterproof and dustproof vent products are installed on the equipment port, which can provide pressure relief and balance functions for the equipment when it comes into contact with dust, splash and is temporarily immersed in water.
Waterproof and dustproof vent products provide a dust-proof and splash-proof barrier for audio equipment, without causing a significant decline in sound transmission, integrity or quality. In addition, breathable products can prevent the invasion of various daily liquids, such as carbonated drinks, coffee and so on. Our waterproof and dustproof vent products can not only keep the sound quality unchanged, but also provide a beautiful shell to build a waterproof barrier for the above elements.
Unique advantages of waterproof and dustproof horn net:
Sound-permeable materials are used to minimize sound loss during sound transmission.
Provide a solid waterproof and dustproof barrier for indoor and outdoor audio equipment.
Quickly resume ventilation after contact with liquid.
High-viscosity adhesive can be used in harsh environment and firmly adhere to the surfaces of various products.
There are both standard sizes and customized products.
Thin and light, it is the most ideal ventilation scheme for equipment placed in limited space.
Simple installation, manual or automatic installation.
When the equipment is exposed to dust, splashed with liquid or immersed in liquid, it can provide effective protection for the equipment, and the highest protection level can reach IP68.
key property
The waterproof and dustproof safety level reaches IP69K.
Expanded PTFE breathable film with microporous structure has the following characteristics:
O hydrophobic and oleophobic
O Promote moisture and steam emission.
O extremely chemically inert
O won't fall.
O uv resistance
O extreme temperature resistance
Main advantages
Sound-permeable materials are used to ensure high-quality sound transmission.
With the extremely high permeability of the gas permeable membrane, continuous internal and external gas exchange can be realized, effectively preventing the accumulation of harmful gases released by the battery.
Effectively prevent the display screen from condensation and fogging.
Protect internal components from pollutants and liquids used in daily life.
Convenient installation, which brings great convenience to design and production.
Application example
Consumer audio and video equipment
Navigation equipment GPS
Handheld communication system
Portable data equipment
Medical electronic equipment
Rugged electronic equipment
mobile phone
4. Waterproof and dustproof breathable film for telecommunication equipment
Potential problems: The equipment used in telecom industry is affected by the rapid fluctuation of ambient temperature, and at the same time, it will come into contact with various particles and always be exposed to various climatic conditions such as wind, rain and sunshine.
For example, when equipment such as tower antenna with active electronic devices is working, heat will accumulate inside the equipment shell. This will lead to an increase in pressure, which will put more stress on the sealing strip of the housing. In addition, sudden rainstorm or strong wind may lead to a sudden drop in air temperature, and then a vacuum of 200 millibar (3 psi) or more will be formed inside the equipment enclosure, which will also generate greater stress on the sealing strip of the enclosure. If the pressure inside and outside the shell is not balanced, water, moisture, dust and dirt in the external environment will enter the shell through the sealing gap. This may have a negative impact on the performance of communication equipment, leading to more maintenance work or higher maintenance costs.
Solution: Keep the pressure balance inside and outside the shell through constant ventilation.
After installing waterproof and dustproof vents in outdoor communication equipment, the pressure difference caused by temperature change will no longer have a negative impact on the equipment shell, because the breathable film used in Fuxiang waterproof and dustproof vents can quickly balance the internal and external pressures of the shell when the ambient temperature and pressure change.
key property
The waterproof and dustproof safety level reaches IP69K.
Expanded PTFE breathable film with microporous structure has the following characteristics:
O hydrophobic and oleophobic
O Promote moisture and steam emission.
O extremely chemically inert
O won't fall.
O uv resistance
O extreme temperature resistance
Main advantages
Effectively resist the influence of water, salt and other corrosive liquids.
A membrane that allows water vapor to penetrate can prevent condensation to the greatest extent.
Easy to maintain; Even if a vent is installed, it is very convenient to open the equipment to maintain the internal components.
Convenient installation, which brings great convenience to design and production.
Application example
amplifier
aerial
Control unit
base station
* * * Public address system (PA)
Machine station storage battery
5. Potential problems of waterproof and dustproof breathable film for outdoor lighting: The shell of outdoor lighting is affected by changes in ambient temperature and pressure.
Temperature change, dust, dirt and moisture will have a considerable impact on the electronic components of outdoor lighting lamps. For example, rain may cause a lampshade to cool rapidly, thus creating a vacuum of 200 mbar (3 psi) or more inside the lampshade. If the pressure inside and outside the casing is unbalanced at this time, air and moisture in the external environment will enter the casing through the sealing gap. When moisture comes into contact with the inner wall of the casing with relatively low temperature, it will condense into water droplets. This will seriously affect the performance of internal components of lamps.
Solution: Keep the pressure balance inside and outside the enclosure through continuous ventilation.
After installing waterproof and dustproof breathable film on the shell of outdoor lamps, the pressure difference caused by the change of external temperature will no longer have a negative impact on the shell, because Fuxiang breathable film can quickly balance the internal and external pressures of the shell when the environmental temperature and pressure change. These breathable films can also be used as a powerful barrier against the influence of bad weather conditions (such as rain, snow, strong winds, etc.). ), to ensure the timely release of water vapor seeping into the shell, and greatly reduce the condensation phenomenon on the inner wall of the shell.
Main advantages
Effectively prevent the shell from fogging and condensation.
Effectively resist the influence of corrosive liquids such as acid rain and salt.
The gas permeable membrane has very high gas permeability, which means that the inside of the casing can continuously exchange gas with the outside, thus effectively preventing the harmful gas generated by the battery from accumulating in the casing.
The stress on the sealing strip of the shell is greatly reduced, so as to minimize the failure probability and prolong the service life of the shell.
Simple maintenance; After installing the breathable membrane, it is still very convenient to open the shell to contact the internal equipment.
Convenient installation, which brings great convenience to design and production.
Application example
Outdoor decorative lighting
Leisure car lighting
Industrial/commercial outdoor lighting
LED application
Landscape lighting/indoor special lighting
6. Waterproof and dustproof breathable film for packaging
Packaging vent products meeting various application requirements
The structure of expanded PTFE is suitable for all kinds of harsh environments. After the packaging breathable film is sealed to the plastic parts, the quality of each part should be checked. The products come in various sizes and are suitable for containers with a volume of 0.02- 1.500 liters. Just snap them or press them into place.
Advantages of breathable injection molded parts for containers:
The breathable film can balance the pressure and prevent the container from bursting, collapsing or leaking.
Unique press-fit design, can be installed manually or automatically.
There are a series of vent sizes and ready-made components that can improve packaging without redesign.
The scientific principle of the solution
The chemically inert gas permeable membrane is designed for the following purposes:
Prevent liquid infiltration
Even after contact with liquids containing organic substances or surfactants, or oily or solvent-based liquids, it is the best combination that can simultaneously block liquids and ventilate.
Control the pressure difference in the container.