What is the performance of the flame retardant rubber and plastic insulation pipe?
First, let's take a look at the classification of rubber and plastic insulation pipes. The main classification of insulation pipe is cyanide plastic insulation pipe, pipe pipe insulation pipe, hot-wound insulation pipe, direct buried high temperature resistant composite insulation pipe, magnesium silicate insulation pipe, polyurethane insulation pipe, direct buried insulation pipe, prefabricated direct buried insulation Pipes and polyurethanes are directly buried in insulation pipes. These types of insulation pipes are all modified and researched on the basis of insulation pipes, and new functions have been developed and applied in many places. The advantages of rubber and plastic insulation pipes are good insulation performance, less heat loss, and more material saving. There is no pollution to the environment, construction is more convenient, and the project cost is relatively low; the service life is long, the safety is good, and the installation cost is low. Therefore, it is very popular among people. Those who need to use the insulation tube can choose the insulation tube according to their needs.
1. The significance of the detection of water vapor permeability of rubber and plastic insulation pipe For the realization of the insulation capacity of rubber and plastic foam insulation materials, it relies on the gas inside a large number of tiny bubbles. In a reasonable range of bubble diameters, the more complete the foaming, the higher the gas content in the material, and the better the heat insulating effect. In actual use, there is always a temperature difference and a humidity difference on both sides of the inner and outer walls of the rubber-plastic insulation pipe, which forms a difference in partial pressure of water and gas, and the water gas gradually penetrates into the interior of the material. Because the thermal conductivity of water (0.599w/m?k, 20°C) is much higher than that of air (0.026w/m?k, 20°C), the thermal conductivity increases with the accumulation of internal moisture. Lead to reduced or lost thermal insulation and reduced service life. Therefore, the water vapor permeability resistance of the insulation material is very important, which is directly related to the service life of the material. The stronger the resistance to water vapor permeation, the more difficult it is for water vapor molecules to penetrate into the interior of the material. The slower the thermal conductivity increases, the longer the service life of the thermal insulation material. For rubber-plastic insulation pipes, the ability to resist water vapor permeation can be characterized by the water vapor transmission rate of the material.
2, rubber and plastic insulation pipe test water vapor transmission rate of the rubber and plastic insulation pipe water vapor transmission rate test main reference standard: BS? EN? 13469-2001 "construction equipment and industrial facilities insulation products, prefabricated pipe insulation Determination of layer water vapor transmission rate. This standard requires that the test chamber environment be controlled at a constant temperature and humidity (23?±?1) °C, relative humidity (50?±?3)%. The air velocity in the chamber is between 0.02 μm/s and 0.3 μm/s. The intercept height of the sample is (100?±?1)?mm. If the outer diameter of the sample is larger than 100mm, it is taken at 150mm. Keep the section as smooth as possible. A certain amount of desiccant (providing a 0% humidity environment) was placed inside the sample, and the upper and lower ports were sealed with aluminum foil. Thus, there is a humidity difference between the 0% humidity inside the sample and the 50% humidity in the test chamber, and the water vapor in the test chamber will penetrate into the inside of the sample. The water vapor transmission rate can be calculated by periodically weighing the sample cup.
What is the performance of the flame retardant rubber and plastic insulation pipe? 
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