Product Description The Standard Size Of Liquid Filter Bag The filter sock are available in many different sizes and shapes.The filter sockcould be custom made. Normal used sizes of filter sockare: Filter Bag Model Filter Bag Area(m) Filter Bag Volume.
FILTER BAG MATERIAL INTRODUCTION
1.Polypropylene (referred to as PP)
Alias: polypropylene oil agent; polypropylene fiber; polypropylene FDY; polypropylene filament FDY;
polypropylene staple fiber; polypropylene staple fiber; polypropylene staple fiber,density(0.9g/mLat25℃),Melting point:189℃.
Solubility: soluble in methyl formamide, thiocyanate has no resistance to aromatic hydrocarbon (benzene) solvents, chlorinated hydrocarbon (carbon tetrachloride) solutions, avoid strong oxidants,chlorine, potassium permanganate. Use temperature: less than 90 ℃Use acid-base PH value: 1-13
2.PE:Poly(ethylene)
The specific gravity is 1.38g/cm3, the melting point is 256℃, and the operating temperature is 130℃-150℃.
Polyester has excellent electrical insulation, good wear resistance, high strength, and good thermal stability.
Operating temperature: less than 150 ℃. Use PH value: 5-8.
3.PET:poly(ethylene terephthalate)
Pet 1.68g/cm3, Melting point:250-255℃
The dielectric properties are average and will be affected by hydrolysis.
Creep resistance, fatigue resistance, friction resistance, dimensional stability are all very good, organic solvent resistance, good weather resistance PET fiber is stable to weak acids and weak bases, and will decompose under the action of strong acids, strong bases and steam. It will dissolve in some more corrosive organic solvents such as mixed solvents of phenol, o-chlorophenol, m-cresol and trifluoroacetic acid.
Operating temperature: less than 180℃
4.PTFE:(Teflon/PTFE)
It is a polymer compound formed by polymerization of tetrafluoro-Z ene. Melting point:327°C, density: 2.1-2.3 g/cm3;
Polytetrafluoroethylene (F4, PTFE) has a series of excellent performance: high temperature resistance-long-term use temperature of 200~260 degrees, low temperature resistance-still soft
at -100 degrees; corrosion resistance-resistance to aqua regia and all organic solvents; Weather resistance-the best aging life in plastics; high lubrication-the smallest coefficient of friction (0.04) in plastics; non-stickiness-the smallest surface tension in solid materials without adhesion of any substances; non-toxic and physiologically inert Excellent electrical properties, it is an ideal C-level
insulating material.
A thick layer of newspaper can block the high voltage of 1500V; it is smoother than ice.
PH value: 1-14.
5.(Stainless steel)
304 Stainless steel 06Cr19Ni10, SUS304, density 7.93 g/cm, operating temperature -196℃~800℃,rust reason: a. Chloride ions, including salt/sweat/sweat/sea breeze/soil, avoidance measures: wipe frequently, Remove dust and keep it clean and dry. b. Solution treatment. c, intergranular corrosion.
316L Stainless steel 022Cr17Ni 12Mo2, sus 316, AISI 316L, add Mo (2 ~ 3%), excellent corrosion resistance, high temperature resistance, excellent creep resistance, 316L stainless steel is also resistant to corrosion by the ocean and corrosive industrial atmosphere. In intermittent use below 1600 degrees and continuous use below 700 degrees.
6.(Nylon)
Polyamide fiber is commonly known as nylon (Nylon), the English name is Polyamide (PA), and its density is 1.15 g/cm3; it is a general term for thermoplastic resins containing repeating amide
groups -[NHCO]– on the molecular backbone. Including aliphatic PA, aliphatic-aromatic PA and aromatic PA.
Nylon has excellent toughness, self-lubricity, wear resistance and chemical resistance Academic properties, gas permeability, and oil resi stance, non-toxic and easy to color, etc.
Advantages: Long-term use temperature: less than 80 °C of organic acids with different concentrations,Alkali or salt can cause the swelling, dissolution or hydrolysis of PA.
HOW TO CHOOSE FILTER BAG MATERIAL ACCORDING TO PH VALUE
PH Value Definition:
The hydrogen ion concentration index (PH) refers to the ratio of the total number of hydrogen ions in the solution to the total amount of substances. A value indicating the degree of acidity or alkalinity of a solution, that is, the negative value of the common logarithm of the concentration of hydrogen ions contained. pH=﹣1g[H ]
Acid Judgment:
At 25°C
Neutral solution, pH=7
Acidic aqueous solution, c (H ) >c (OH ), pH<7, the smaller the pH value, the stronger the acidity;
Alkaline aqueous solution, c (H ) <c (OH ), pH>7, the greater the pH value, the stronger the alkalinity.
In neutral solution at 100°C, pH=6
PH VALUE AND CONCENTRATION
Definition of concentrated acid:
Concentrated sulfuric acid, the mass fraction exceeds 70%, and the substance concentration is 18mol/L.
Concentrated hydrochloric acid, the mass fraction exceeds 37%, and the substance concentration is 12mol/L.
Nitric acid, the mass fraction exceeds 65%, the substance concentration is 8mol/L
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