High-speed rail crossing the fog
Original title: Iron always responds to the impact of haze weather on high-speed trains: Strengthen equipment maintenance to ensure the safe operation of trains
According to the "News and Verticals" report, the Voice of the Central People's Broadcasting Service of China, China Voice, has launched a special live broadcast on the "Warm Home Road" for the Spring Festival in 2017. To Spring, tell stories about Spring Festival and respond to hot topics in Beijing, high-speed trains, and highways.
A group of pictures passing through the HSR high-speed rail some time ago were transmitted online. After the high-speed rail from Shanghai to Beijing passed through the fog and fog area, the white high-speed rail became dirty. A dirty high-speed rail on the Internet was really related to the smog. ?
Huang Xin, deputy director of the Operation Department of the China Railway Corporation Transportation Bureau, said that he also took the car and paid attention to relevant reports. He also pointed out that the continuous severe haze will affect the railway power supply system. The smog particles cover the power supply equipment. It is prone to fog flashes, which may affect the power supply and normal operation of the train.
Some passengers are concerned that from the previous smog situation, do they not need to wear masks when sitting in a high-speed train?
Huang Xin said that everyone’s concern may be “dirty and not dirtyâ€. We are more concerned with safety. We have increased the frequency of maintenance of key driving equipment and ensured the safety of train operations in fog and haze. Under the circumstances, it will also adopt a speed-down approach to ensure safety. It may also cause delays in the train and hope passengers can understand it. At the same time, people are concerned about the high-speed rail ventilation system. The ventilation system of our country's high-speed railway EMUs is equipped with multi-level filter screens that can physically block dust. The concentration of dust inside the vehicle compartment is obviously lower than that outside the vehicle. Standards, we need not worry too much. Due to the high number of stations in the high-speed railway EMUs and the frequent opening and closing of the doors, some of the air outside the vehicle will enter the interior of the car, sometimes affecting the air quality inside the car.
1. Introduction
This ADK wax is a very ideal neutral Paper Sizing Agent, it can be used as pulp sizing and surface sizing to make the paper have excellent water resistance. When using this ADK wax, it should be heated to melt, and then mixed with the starch emulsifying agent and protective agent, until the agent emulsify into stable latex
2. Specifications
Appearance |
pale yellow waxy solid & flake & block |
Purity |
≥90% |
Melting point |
48-50°C |
Acid value (mgKOH/g) |
2.0 mgKOH/g |
FFA free fatty acid |
≤2.0% |
Iodine value |
45- 48.5 giz/100g |
Carbon content |
C16: 40% C18: 60%
|
3. Alkyl Ketene Dimer Techinical Data
4. Application of Alkyl Ketene Dimer
As a kind of reactive neutral paper sizing agent, mainly used for copper base paper, copy paper, file paper, paper dictionary and quality writing paper paper in sizing. The pH value can reach about 8, which is called basic sizing, which is widely used at home and abroad. This product can also be used as surface sizing agent.
5. packaging
25KG/ bsg or 500kg/ bag
AKD Wax,Alkyl Ketene Dimer,90% Purity AKD Wax,Alkyl Ketene Dimers AKD Wax
Shandong Tiancheng Chemical Co., Ltd. , https://www.akdchemical.nl