Tp-Pbl Bubble Pressure Filter Membrane Pore Size Analyzer

• After-sales Service: 1 Year
• Warranty: 1 Year
• Transport Package: International Standard Export Case
• Trademark: TOP TESTER
• Origin: Chongqing
• Model NO.: TP-PBL
• HS Code: 9031809090
• Production Capacity: 100 Sets/Month

Product Description

TP-PBL Bubble Pressure Filter Membrane Pore Size Analyzer

Applications:

Bubble Pressure Method Membrane Pore Size Analyzer: Pore size data can be obtained to accurately characterize through-hole pore throat information of interest to researchers of membrane materials. It avoids problems such as blind holes, surface convexity and gaps contained in the data tested by adsorption method, mercury intrusion method and other methods. It is suitable for research and development, production of membrane materials and related scientific research institutions and corporate users.
Scope of application: Pore throat testing of through holes in filter membranes, fiber membranes, filter elements, battery separators, fabrics, non-woven fabrics, paper, ceramics, sintered metals, rocks, concrete and other materials.
 

Features:

Gas-liquid drainage (bubble pressure method): Apply a pressure difference on both sides of the membrane to overcome the surface tension of the infiltration liquid in the membrane pores, drive the infiltration liquid through the pores, and thereby obtain the pore diameter data of the through-hole throat of the membrane material. At the same time, this method is also the ASTM standard method for film determination.

Example: to a certain membrane material, for example, the membrane can be fully wet with its infiltration of liquid, due to the existence of surface tension, infiltration of liquid will be bound in the pores of the membrane; to the side of the membrane to gradually increase the gas pressure, when the gas pressure reaches greater than the aperture within the infiltration of the surface tension of the liquid produced by the pressure, the aperture in the infiltration of the liquid will be pushed out by the gas; due to the smaller the aperture, the higher the surface tension produced by the pressure, so to push out of which the higher the pressure required to be applied; Similarly, it can be seen that the infiltrating liquid in the hole with the largest pore size will be pushed out first to allow the gas to pass through, and then as the pressure rises, the pore sizes go from large to small, and the infiltrating liquid in the holes is pushed out in turn to allow the gas to pass through, until all the holes are opened to reach the same transmittance rate as that of the dry film.
Liquid-liquid displacement method: After the test material is completely infiltrated, a liquid that is insoluble in the infiltrating liquid is used as the displacement liquid, and the infiltrating liquid is displaced from the through-hole aperture, so that the pore size data of the material can be obtained through the liquid flow and pressure data according to Washburn's formula. Since the interfacial tension of liquid-liquid is much smaller than that of gas-liquid, the liquid-liquid repellent method can test smaller pore sizes than the gas-liquid repellent method (bubble pressure method).

The relationship between pore size and pressure is as in Washburn's equation:               
                  D=4γCosθ/p  
    In the formula: D = pore diameter; γ = surface tension of the liquid; θ = contact angle; p = differential pressure   

Percentage of flow for pore diameter distribution:               
                 f(D) = - d[Fw/Fd)x100]/dD
    Where: Fw = wet sample flow rate; Fd = dry sample flow rate

Specifications:

Pore diameter test range: 0.013-500um (gas-liquid method); 5-500nm (liquid-liquid method)
Multiple sample cells are designed for samples of different sizes, and special samples can be designed individually;
Equipped with a fully automatic vacuum moisturizing device, which can greatly speed up the infiltration time and improve the test efficiency by more than 50%;
Depending on the sample to be tested, a variety of infiltration liquids are available (special infiltration liquid Porofil or other infiltration liquids);
High-precision dual flow sensors, segmented flow measurement, complementary ranges, automatic switching;
High-precision dual pressure sensors, segmented pressure testing, automatic program judgment, and automatic switching;
All stainless steel pipelines, metal hard seals, good sealing, high pressure resistance and corrosion resistance;
The entire process is automated and intelligent, no manual attendance is required, and friendly human voice operation prompts are provided;
Detailed instrument operation log display and recording, accurate to the second, and the entire experimental record can be traced.
 

Dolores CHEN | Sales Manager
CHONGQING TOP OIL PURIFIER CO.,LTD
Address:No.1, Jianlong N, Rd, Jiulongpo District, Chongqing, China
WhatsApp / Wechat: 0086-18008321646
Mobile: [phone]
Tel/Fax:[phone]