Fluorine-butterfly technology characteristics of the pump valve material is introduced

Fluorine-butterfly pump is applied in chemical industry more industrial equipment, water pump valve is one of the most important infrastructure unit, is the overall process cycle power guarantee. Fluorine-butterfly pump valve equipment performance difference directly affects the continuity and stability of the production process.

fluorine-butterfly process characteristics of the pump valve material:

1, at present, the commonly used in the world of fluoride resin has more than ten kinds, such as teflon ( PTFE) , poly (vinylidene fluoride ( PⅤDF) , polytrifluorochloroethylene ( PCTFE) , fep ( 聚全氟乙丙烯) And so on, its performance is characterized by excellent strong corrosion resistance, The vast majority of acid, alkali, salt and organic solvents have corrosion effects on them) , excellent electrical insulation property, can highlight the tackiness resistance ( Almost all material can't adhere to the surface) , high resistance to atmospheric aging and non-combustible performance, excellent self-lubrication and dynamic and static friction ( Of all the solid material has the lowest friction coefficient) , high thermal stability and no toxin decomposition and creep characteristics ( All kinds of engineering resin materials for medium and long-term stability high temperature material) 。 Fluorine lining material has excellent resistance to chemical corrosion and weather resistance, medium not only far more than metal materials, and also is the best in the organic polymer materials, therefore they are widely used in chemical, pharmaceutical, metallurgical, energy, electrical and electronic, aerospace and military industry field of anticorrosion coating and sealing, etc. Due to the complexity of components in industrial wastewater, especially containing complex wastewater, the process of chemical reaction time is long, the scale is serious, the whole system must be cleaned regularly, in order to avoid serious impact on system operation. After used fluorine-butterfly water pump and corrosion resistant piping, can use the acid cleaning of the entire system, without having to spend a lot of manpower to tear open outfit and descaling by mechanical method, greatly saves the cost of maintenance and cleaning.

2, fluorine lining material has very excellent surface is not sticky, for water, oil and non invasive of most organic solvents, low grinding of solid materials. Thermal stability of fluorine resin is one of the best in all kinds of high polymer materials, but relative to the metal materials and inorganic nonmetal material is the lowest. The main cause of the high temperature performance degradation is softening deformation and recrystallization, thermal decomposition. Fluorine lining material at low temperature are prone to cold short cracks, even this limits the minimum temperature of this product. Among various kinds of lining fluorine plastic, ptfe ( PTFE) With the long-term use of the most wide temperature ( - 250℃~260℃) 。 Containing fluorine resin has excellent electrical insulation, including ptfe ( PTFE) And fep ( 聚全氟乙丙烯) Optimal performance and electrical component or element can be used as coating materials are widely used. Lining fluorine plastic coefficient of linear expansion of relatively high metal materials about three orders of magnitude, is 5 x 103 ~ 1. 9×10/℃。 Although fluorine plastic has good plasticity, can accommodate larger swell-shrink deformation, but should choose as far as possible small linear expansion coefficient of fluoride resin as the surface of the metal or nonmetal coating and lining, to improve the quality of the surface of the coating and lining and the fatigue life and its important significance.

3, although fluorine lining material has excellent corrosion resistance, surface not sticky, weather resistance, electrical insulation, aging resistance, however, its mechanical performance relative to the metal materials, low stiffness and strength of fluorine plastic, generally more than an order of magnitude lower ( Carbon steel yield strength of 235 mpa, H62 copper alloy tensile strength of 370 mpa, the tensile strength of austenitic stainless steel is more than 500 mpa, ultra high strength alloy steel tensile strength is greater than 1200 mpa, fluorine plastic tensile strength was only about 15 ~ 50 mpa) 。 Fluorine plastic low elastic modulus, elastic modulus is about 4 x 10 mpa, is only 1/50 of the steel material, strength is only 1/10 of the steel materials, but the toughness is very excellent, elongation is more than an order of magnitude higher than the steel material.

therefore, containing fluorine resin generally cannot serve as the main body of engineering component materials, but mainly as a surface composite ( Coated or lining) Material application, coated or lined with high rigidity of metal materials and inorganic nonmetal material surface is used. Metal material has high rigidity, strength and other mechanical properties, fluorine plastic has very good strong corrosion resistance, adhesion, low friction resistance, noise reduction, decreasing the consumption of engineering characteristics, the two organic combine, use a metal substrate surface composite lining fluoride resin coated or manufacturing processes needed for the industrial pump valve, pipe fittings, tower containers, such as new equipment, has a plant wide market application prospect.

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