In September 2010, Quantachrome Instruments launched the latest thin film aperture analyzer, Porometer 3G.
The instrument is a unique, fully-automated, multi-functional analyzer that measures the pore size and permeability of membranes using infiltrable liquids such as water. Like traditional mercury porosimeters, Porometer 3G also uses the Washburn equation to calculate pore size and permeability. However, because the instrument's testing principle is the bubble pressure method, the use of invasive liquids, such as water, there is no mercury pollution, no laboratory modification, safer and more convenient. At the same time, this method is also a standard method for ASTM thin film measurements. Test principle: The bubble pressure method, ie gas permeation method, is used to measure the pressure change of the invaded sample under the effect of airflow.
This method is also based on the theory that surface tension causes fluid rise in capillary pores. When the capillary pores are immersed in a liquid, the liquid in the pores will rise to a certain height under the action of the surface tension. When the surface tension in the pores and the gravity of the liquid column in the pores reach equilibrium, this This can be used to calculate the membrane pore size and permeability (Washburn equation).
This unit uses dual extruders and dual tractors to compound multiple substrates by casting, and complete the bright compounding process of the front and back of the plastic woven bag in one production process. The unit has high degree of automation, advanced technology and convenient operation. The whole machine adopts PLC operating system, linkage control, automatic temperature control of each extruder, automatic suction, and the composite product has strong adhesion fastness, good effect, uniform thickness and good sealing performance.
The cement bag perforating needle rollers and woven bag perforating needle rollers developed by our company adopt imported alloy steel wire needles with high strength and good abrasion resistance. With advanced drilling technology, the processing precision reaches the same level in the world.
The base material of this series of needle rollers generally adopts hard aluminum alloy and copper alloy, which has the characteristics of good quality, low price, economical and practical.
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