With the development of the times, people's requirements for environmental protection are becoming more and more stringent, and more and more attention is paid to the safety of public places. Therefore, in modern high-rise buildings, subways, hospitals, colleges and large shopping malls and other dense places of security systems such as emergency exit lighting, alarm systems and fire prevention equipment, as well as ships, locomotive manufacturing industries, people require a different from ordinary PVC material sampling tube is safer, more reliable, more environmentally friendly - low smoke halogen-free flame retardant environmental protection and fire resistance and low temperature resistant sampling tube.
In order to meet the safety and environmental protection requirements in the sampling tube of the aspirating smoke fire detector, Waterhua has taken the lead in using raw materials to manufacture low-smoke halogen-free flame retardant and fire-resistant and low-temperature resistant sampling tubes. Compared with ordinary PVC sampling tubes, halogen-free sampling tubes are an environmentally friendly product that meets modern safety requirements.
In the event of a fire, the smoke released when the sampling tube is burned is non-toxic and corrosive, so the damage to human body and objects can be greatly reduced. At the same time, the amount and concentration of smoke released by the halogen-free low-smoke sampling tube are very low in the event of a fire, so that the crowd and firefighters can clearly find the source and exit of the flame, and the firefighters can quickly arrive at the fire scene to extinguish the fire. In addition, the flame retardant component of the flame retardant LSZH sampling tube can play a flame retardant role in the event of a fire, so that the sampling tube will not become a channel for flame spread.
PP Sampling Tube In extremely cold and low temperature environments, the air transmission of the very early sampling tube needs to be cold resistant to ensure the reliability of the very early smoke alarm system.
Innovative technology, 5 bigFeatures:
SmokeIntensity
Polymer materials are burned to a greater or lesser extent produce some smoke, which is a mixture of water vapor and gas, as well as solid or liquid suspensions formed as a result of incomplete combustion.
The smoke density of the sampling tube during combustion is evaluated by DS (specific optical density at a given moment) and DM (maximum specific optical density), which is under certain test conditions, with the help of optical methods, to measure the attenuation of the light beam due to smoke accumulation, DM represents the total accumulation of smoke, and the larger the DM, the greater the amount of smoke generated during combustion, and vice versa.
When the sampling tube is burned in a fire, the general PVC substance will release a very high concentration and opaque smoke during combustion, because the chlorine contained in the PVC smoke will react with the antimony in the additives during combustion, resulting in incomplete combustion and the formation of antimony trichloride gas (the formation of this substance will greatly dilute the oxygen content in the air, thereby suffocating the people in the fire), and at the same time release black smoke molecules (carbon molecules) that hinder the transmission of light, and the above problems no longer exist in Waterwater's halogen-free sampling tubes.
Toxicity and corrosiveness
When the ordinary PVC sampling tube is burned, the chlorine and hydrogen in it will combine to release *** gas. PVC tubes are prohibited when they are required not to produce excessive smoke and toxic substances, or when the temperature rises and does not enhance their toxicity. The halogen-free sampling tube uses halogen-free polyolefin as the base material, which does not produce acid gas when burning, so its toxicity and corrosiveness are much lower than that of ordinary PVC sampling tubes.
v0Flame retardant
Although sampling tubes made of PVC and other halogen-containing materials have certain flame retardant properties, due to their large smoke generation and toxic and corrosive gases, halogen-free flame retardant sampling tubes have become an inevitable choice in the case of higher and higher requirements for safety and environmental protection in modern society.
In halogen-free flame retardant, flame retardant fillers such as aluminum or magnesia hydroxide are mainly filled in large quantities. This substance can release crystal water when the sampling tube is burned, absorbing a large amount of heat, thereby inhibiting the rise of polymer temperature, delaying thermal decomposition, and reducing the combustion rate. In addition, the water vapor produced by dehydration and decomposition can dilute flammable gases, thus acting as flame retardant.
Of course, too much combustible material is added to the organic compound, which greatly reduces the mechanical properties of the material. Therefore, how to make halogen-free materials have both excellent flame retardant properties and good mechanical properties has become a difficult problem to solve. And the Waters technical team relies on strong R&D capabilities to make it possible, in line with GB T516916-2017, UL94, IEC 61386 standards.
Fire resistance characteristics
Sampling tubes must be fire-resistant when the line must continue to function in the event of a fire, and when it is unavoidable to be erected over a high-risk area.
Waterhua refractory sampling tubes can operate safely for up to 100 minutes in an environment of 90 minutes. When the PVC sampling tube is burned, it will release corrosive and ionic gases that destroy the mica edge banding, creating a guiding environment.
Cold resistance
In the low-temperature cold storage, the cold-resistant, low-temperature and antifreeze-proof sampling tube adopts special materials and design, which has excellent cold resistance. It is able to maintain good flexibility and air transmission capacity at extremely low temperatures of -50 and is not affected by cold environments.
Waters Low smoke halogen-free low temperature resistant environmental protection special sampling tube features:
Low smoke: When burning, there is only a faint mist of water, and the visual distance is more than 60 meters.
NonePoison: Does not contain any toxic substances (lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, phthalates (DEHP, BBP, DBP, DIBP).
ResistanceBurn:V0 flame retardant
Long lifespan: 100 years.
High temperature resistance:
Resistant to low temperatures
Environmental Standards:Comply with international (EU and Japanese) environmental standards.
In recent years, China, as a major infrastructure country, has invested more and more in infrastructure construction, petrochemical industry, data center, rail transit, cryogenic cold chain (-50), semiconductor plants, clean workshops, aviation airports, air facilities, public buildings, colleges, hospitals and equipment in dense places The construction scale is getting larger and larger, and the required very early system sampling tubes are also increasing. Since the sampling tube is usually laid in a centralized manner, once a fire occurs, the flame will spread along the sampling tube channel, so that the fire expands rapidly. At the same time, the side effects of a fire, such as the toxicity of people, combustion smoke and pollution to the environment, sometimes cause more significant losses than the fire itself. Therefore, the selection of low-smoke halogen-free flame retardant and fire-resistant sampling tubes has attracted more and more attention.
In order to ensure the safety of the facilities, low-smoke halogen-free flame retardant and fire-resistant and cold-resistant sampling tubes should be selected as much as possible.