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Performance test method follows the principle of air filter material
2012-09-06
      (1) to determine the useful technical indicators. Adoption of the performance of the filter and filter element technology capable of consistent indicators, such as hydraulic filters require filtration precision β, and in some foreign air filter material company has pioneered the use of materials should be used i...       (1) to determine the useful technical indicators. Adoption of the performance of the filter and filter element technology capable of consistent indicators, such as hydraulic filters require filtration precision β, and in some foreign air filter material company has pioneered the use of materials should be used in the formulation of standards.     (2) did not use the indicators are not included in the standard. For example, the filter paper tensile strength, bursting strength can be used instead of the filter paper folding strength and fatigue resistance; detection of acid-proof water resistance available filter indicators; air filter material width and surface density can not be included in the standard.     (3) measurement method will be a reliable and accurate basis. Determination of each indicator must draw on the basis of the text, or preclude the use of, or equivalent to preclude the use of the need for good reasons, and each has its verification tests.     (4) eclectic, expanding the use of methods. According to the foreign part of the air filter material master standard, some of the indicators of the definition and measurement of a variety of methods (such as air permeability), can determine multiple methods to become the standard by using standard enterprise any choice.    (5) the creation of new test methods, to define new indicators. For example, modern new filter "the recoil performance" project, the test methods and performance defined filter material must follow the filter performance requirements, carefully defined test methods to be repeatedly verified. View Details
Classification and description of air filter material
2012-08-30
The air filter materialhas three types:Control the smoke dust emissions class, including extinguish chimneys, cement and cigarette factories, coal-fired power plants and steel enterprises blast furnace;Machine intake system maintenance class, such as construction machinery, vehicles and air tight machine such as intake system;3 Create a clean room ... The air filter materialhas three types:Control the smoke dust emissions class, including extinguish chimneys, cement and cigarette factories, coal-fired power plants and steel enterprises blast furnace;Machine intake system maintenance class, such as construction machinery, vehicles and air tight machine such as intake system;3 Create a clean room class, such as clean room, protective masks and clean bench.Use begged, performance and test methods are different. Course early years of air filter material performance test method performance test project foreign companies due to the procurement of filter material and introductions, such as the removal efficiency (the efficiency of dust filter weight percentage) and the DOP aerosol particle penetration (0.3μm particles penetrate percentage), etc., but no domestic test an enterprise has talent, coupled with non-standard to follow, and therefore external test method can only be Wangyangxingtan. U.S. SAE standards into domestic car with three filter industry referrals introductions, so have a car air filter test method standards, such as the removal efficiency.But through the air filter material performance testing is still blank. Atmospheric maintenance type of air filter is nearly 20 years of international new deployment, the begged the performance of the new air filter and test methods are different from the latter two categories. In China in recent years on environmental measures focus on them, but such filter performance testing and air filter material testing are blank. Fight one step in the test on the technical level of the smoke dust emissions, air filter material in the filter material performance test method standards development, testing method of the filter material with international standards.Although our atmospheric environment safeguarding regulations introduced time lag behind the other kingdom, but if enacted filter material performance test method standard advanced, will expand and occupy the domestic market to promote high-quality filters, therefore necessary to create their own U.S. EPA, FEMA experimental standard and 100 cycles of standard as well as the European ETV experimental project.Recent years, the standard of three air filters have a "pulse cleaning effect" performance begged, it should be in all three categories on the air filter material to increase the performance of the test method. The usual difficulty: because from time to time not focus on filtration the materials performance test method standard domestic filter material performance test method standard did not see the United States and Europe, introductions the technical exchange foreign exhibitors and brief information alone can not understand their The details of the test methods View Details