106 results about "Teflon af" patented technology

The invention relates to a metal ceramic wear-resistant coating non-stick pan. The non-stick pan comprises a pan body, as well as a graphitic layer and a metal ceramic coating which are positioned on the surface inside the pan, wherein the metal ceramic layer comprises a titanium carbide metal ceramic coating. According to the wear-resistant coating non-stick pan provided by the invention, an uneven bulged structure is arranged on the inner surface of the pan bottom, so that the contact area between the pan bottom and foods can be reduced; and titanium-based metal ceramic has stable characteristics at high temperature and does not pollute foods, and metalized particles are closely combined with a base material along with high adhesion and fine wear resistance, so that the aim of preventing foods from sticking the pan in a high-temperature cooking process can be achieve, and the titanium-based ceramic can replace the existing Teflon non-stick pan. The metal ceramic wear-resistant coating non-stick pan prepared in the invention is smart in design, excellent in performance, and non-toxic and environment-friendly, is more in accordance with the requirements of 'safety, health, energy saving and environmental-friendliness' provided by the World Environmental Organization and nations currently. The process provided by the invention has a simple method, and is suitable for large-scale production.

A system and method for spectrophotometrically measuring the total alkalinity of a liquid sample. In a particular aspect, the method involves equilibration of a CO2 gas with a sample solution across the permeable walls of a Teflon AF 2400 liquid core waveguide. The waveguide acts as both an equilibration membrane and an optical cell in which spectrophotometric pH measurements are obtained via measurements of absorbance ratios.

The invention discloses anti-static abrasion-resistant polytetrafluoroethylene fibers and a preparation technology thereof. The anti-static abrasion-resistant polytetrafluoroethylene fibers comprise the following raw materials in parts by weight: 55-60 parts of polytetrafluoroethylene, 10-13 parts of polyimide, 6-7 parts of glass fibers, 4-6 parts of carbon fibers, 2-4 parts of aluminum oxide, 3-5parts of graphite, 3-4 parts of copper powder, and 10-15 parts of lubricating oil. The preparation technology comprises the following steps: mixing the raw materials; preparing a cylinder blank through an extruder; performing cold pressing to form a film; drying; sintering; stretching to obtain a fibrotic film; and cutting into silks to obtain the anti-static abrasion-resistant polytetrafluoroethylene fibers. The polytetrafluoroethylene fibers prepared by the method have the advantages of being resistant to static, high in abrasion resistance, and outstanding in mechanical strength.

The invention discloses a bearing capable of relieving wear caused by lubricating oil uneven distribution caused by centrifugal force. The bearing comprises an outer ring, a conduction pipeline deviceused for conducting gas is arranged in the outer ring, a Teflon is fixedly connected to the lower side face of the outer ring, balls are slidably connected to the lower side face of the outer ring, the lower side faces of the balls are slidably connected to an inner ring, a rotating shaft is fixedly connected in the inner ring, and transmission space is formed between the outer ring and the innerring. Magnetic fluid is added into lubricating oil so that magnetic force can be applied to the lubricating oil under the action of a magnetic field after the magnetic fluid is electrified and magnetized, and therefore the distribution state of the lubricating oil under the combined action of a centrifugal force field and a magnetic force field is controlled, and by detecting the air pressure change in the bearing, a bearing overload alarm can be given out.

The invention discloses an intelligent super-long paste extruder for production of Teflon insulating tube. The intelligent super-long paste extruder comprises a datum plate and a charging barrel erected above the datum plate; a detachable die head is arranged at the end, away from the datum plate, of the charging barrel; a center rod is fixed on the datum plate; the end, away from the datum plate, of the center rod is inserted into the charging barrel; a plurality of guide rods are fixed to the datum plate and are located on the peripheral side of the center rod; the guide rods and the center rod are jointly sleeved with a plurality of sheath assemblies used for correcting the coaxiality of the center rod; an extrusion plate is arranged in the charging barrel in a sliding mode; and a lifting part used for driving the extrusion plate to ascend and descend is arranged on the side, away from the charging barrel, of the datum plate. The extruder has the effect of reducing the deviation of the size of a finished tube, is beneficial to improving the product quality, can increase the length of the Teflon insulating tube manufactured at a time, is beneficial to saving manpower and reducing the waste of raw materials, and further reduces the overall production cost, and the application range of the Teflon insulating tube with a large length size is wider.

The invention discloses a soluble teflon processing device and a processing technology thereof. The soluble teflon processing device comprises an extruder, a mold outlet of the extruder is connected with a vacuum mold, the output end of the vacuum mold is connected with a water tank, and the other side of the water tank is provided with a take-up machine; the soluble teflon processing device further comprises a machine frame used for bearing the extruder, the vacuum mold, the water tank and the take-up machine; and a multi-stage temperature control structure is arranged on the extruder, and the temperature of the multi-stage temperature control structure is distributed from low to high in the output direction of the extruder. The soluble teflon processing device and the processing technology thereof have the beneficial effects that sectional temperature control is adopted in the extruder, so that the decomposition phenomenon caused by too fast local temperature rise when soluble polytetrafluoroethylene is heated is avoided, and the stability of the extrusion process is improved; and the high extrusion temperature is adopted, the viscosity of the soluble polytetrafluoroethylene is reduced, the critical shear rate of the soluble polytetrafluoroethylene is increased, the phenomena of rough surface, no gloss or layering are eliminated in the extrusion process, and the extrusion quality of the soluble polytetrafluoroethylene is improved.

The present invention provides a high-hardness composite ceramic non-stick pan, comprising a pan base, a buffer layer and a zirconium-aluminum composite ceramic layer, wherein the buffer layer includes 20-30 parts by weight of titanium aluminide, 40-50 parts of strontium carbonate, 10-15 parts of calcium carbonate, 70-90 parts of bismuth oxide, 20-30 parts of graphene, 50-60 parts of neodymium oxide and 20-30 parts of barium carbonate; the zirconium-aluminum composite ceramic layer includes 50-60 parts by weight Zirconia, 20-30 parts alumina, 5-10 parts chromium oxide, 1-5 parts cerium oxide, 3-5 parts montmorillonite. In the high-hardness composite ceramic non-stick pan provided by the present invention, the buffer layer can have a good heat conduction effect, so that the temperature of the surface of the pan body is kept consistent, and the coating material obtained by the non-stick pan replaces the existing coating material. Teflon non-stick coating not only has good mechanical properties, but also wear-resistant, scratch-resistant, antibacterial, non-toxic and environmentally friendly.

The invention discloses a Teflon rod tube extrusion device and belongs to the field of Teflon rod tube processing. According to the technical scheme, the Teflon rod tube extrusion device comprises a rack, a material tray, a feeding hopper, discharging tubes, heating tubes, a pushing mechanism and a heating assembly, wherein the material tray and the feeding hopper are fixed on the rack; the heating assembly is used for heating the heating tubes; the pushing device comprises an oil cylinder, a disc and pushing tubes; the oil cylinder is fixed on the rack; the disc is fixed toa piston of the oilcylinder; the pushing tubes are fixed on the disc and correspond to dischargingholes; the bottoms of the pushing tubes are through; two guiding blocks are symmetrically arranged inside each pushing tube and close to the bottom position; the bottom of each guiding block is designed to be a slope; an opening-closing block is connected with a sliding block positioned below each guiding block; the contact surface between each opening-closing block and the corresponding guiding block is designed to be a slope; a sliding groove is formed in each guiding block; the groove mouth of each sliding groove is smaller than the groove cavity; each sliding block positioned in the corresponding sliding groove is fixed through the corresponding opening-closing block; the outer diameter of each pushing tubeis the same as the diameter of each discharginghole; and the feeding hopper communicates with the inner cavity of each pushing tube through a corresponding hose. According to the Teflon rod tube extrusion device disclosed by the invention, the descending process of each pushing tube is utilized for supplement, the ascending process of each pushing tube is utilized for feeding, and the working efficiency is effectively improved.

The present invention discloses the application of a fluorine-containing polymer in the preparation of a transparent frozen soil, which is used as a transparent solid material while in the preparation of a transparent frozen soil, wherein the fluorine-containing polymer is Teflon AF 1600 produced by American DuPont Company, with the refractive index of 1.31 and the density of 2.1-2.3 g / cm3, and are particles with the particle diameter of 0.25-2.0 mm or particles with the particle diameter ≦0.074 mm, and its particles have irregular shape. When said fluorine-containing polymer of the present invention is used as a transparent solid material for preparing a transparent frozen soil, the prepared transparent frozen soil has high transparency, low price, no toxicity and no harm, and good similarity with the properties of the natural frozen soil body, can widely substitute natural frozen soil, is used for simulating complicated geological conditions, and is effectively used in model tests in the geotechnical engineering.

The invention discloses a milling cutter for a processing flexible board, which comprises a cutter handle (1). One end of the cutter handle (1) extends to form a milling cutter head (2). Two spiral grooves (3) in the same spiral direction are molded on the surface of the milling cutter head (2) to form milling edges. A V-notch cutting surface is arranged at the end of the milling cutter head (2). A chamfer is arranged at the end part of the cutting surface to form a chamfering edge. The spiral angle omega of each spiral groove (3) is 28-32 degrees. The milling cutter solves the problems of poor rigidity and poor cutting performance of the existing milling cutter used for processing flexible circuit boards, and is particularly suitable for processing blind grooves with chamfers on plates such as aluminum substrates, copper substrates, flexible boards, Teflon plates and polytetrafluoroethylene plates.

The invention relates to a technology for reducing machinery processing problems of printed circuit boards by using a high-frequency material as a basic material. The high-frequency material at least comprises a copper foil, a teflon (polytetrafluoroethylene) resin, glass fiber, and the like, wherein the glass fiber is treated for reducing mechanical strength and is beneficial for processing when machining in subsequent manufacture processes. Materials produced by the method are not changed in material performance and not changed greatly in production cost. However, production yield and production capacity for the subsequently printing circuit boards are improved. The technology can play important role in the development of electronic industry.

The invention discloses a visual frozen soil embankment model making and frozen soil embankment model thermal thaw landslide test device and test method. The transparent frozen soil embankment model is made by using fluorine-containing polymer as a transparent solid material in the transparent frozen soil. The fluorine-containing polymer is a particle with a particle size of 0.25㎜~2.0㎜, which is Teflon AF 1600 produced by DuPont Company of the United States, with a refractive index of 1.31 and a density of 2.1g / ㎝ 3 ~2.3g / ㎝ 3 The test device includes a low-temperature laboratory, and the low-temperature laboratory is provided with simulation devices including transparent model tanks, transparent permafrost embankment models and other simulated embankments and natural environments, including laser sources, recording observation devices and processing devices for digital cameras; The transparent soil prepared by the invention has high transparency and good similarity with natural permafrost soil properties; the test device is easy to realize and has strong repeatability; it can be used to simulate complex geological conditions and is effectively used in model tests in geotechnical engineering .