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Transparent Teflon tube price
- Categories:Industry news
- Author:PFA tube lady
- Origin:PFA tube lady
- Time of issue:2007-12-21 15:21
- Views:
Transparent Teflon tube price
- Categories:Industry news
- Author:PFA tube lady
- Origin:PFA tube lady
- Time of issue:2007-12-21 15:21
- Views:
1. What is the price of transparent Teflon tube?
There are two types of transparent Teflon tubes. FEP (polyfluoroethylene propylene), PTFE (soluble polyfluoroethylene propylene). Attention, there are several kinds of materials for these two kinds of tubes, new materials, imported materials, and sub-brand materials. The raw materials are different. The price of transparent Teflon tubes is also different. You can get the price for each price. If you make an inquiry The price difference is too big when shopping around, but remember to understand what raw materials are.
First, I will introduce FEP (polyfluoroethylene propylene) transparent Teflon tube.
Polyperfluoroethylene propylene pipe, also known as FEP
Introduction of common features:
Operating temperature: -200 degrees to 200 degrees
Ease of processing: can be flanged, soluble, sealable, and weldable
Aging resistance: can be exposed to ozone and sunlight for a long time without aging
High transparency: the refractive index is low among all plastics, and the flow of the medium in the pig can be viewed directly
Corrosion resistance: It can withstand the action of all strong acids, strong oxidants, strong reducing agents and various organic solvents except molten alkali metals, fluorinated media and those above 300°.
As we all know, the two hot-selling fluoroplastic pipes on the market are PTFE and polyperfluoroethylene propylene.
Polyperfluoroethylene propylene has excellent electrical insulation and chemical stability similar to PTFE. Its hardness and tensile strength are slightly higher than those of PTFE, and its public welfare is greatly improved. The melting temperature of the crystalline phase (280℃) is about 50℃ lower than that of PTFE, but it can still be used in the temperature range of -85℃~204℃ for a long time, and it has better cold resistance than PTFE at room temperature. Fluidity, but the coefficient of friction is slightly lower.
Polyperfluoroethylene propylene not only has valuable properties similar to PTFE, but also has excellent processing properties of thermoplastics, so that it can replace F-4 materials in some aspects and has been widely used.
Figure 1: Polyperfluoroethylene propylene pipe source: Shenzhen Dankai
2. How to weld PTFE tube
How to weld PTFE tubes? Most of the PTFE tubes on the market cannot be welded, because the welding technology of PTFE tubes is less, and the materials are rare and expensive. Most of the welding will choose FEP polyperfluoroethylene propylene. The welding technology of fep is relatively mature. , Is also relatively common. Shenzhen Dankai also recommends that it is more convenient to use FEP for welding.
Let me introduce to you how to weld the PTFE tube
There are three welding methods for hot-air welding of PTFE tubes: lap welding, butt welding and reinforced butt welding. Choose the joint form according to the strength and process requirements of the weldment. If the butt welding or reinforced butt welding head needs to be grooved, the grooves are generally "V" and "x" shapes, and the welding method is similar to that of PVC welding. .
The most important thing in the hot-air welding method is the selection of welding rods. Because PTFE has a small adhesion force and is not easy to be wetted, it is necessary to select welding rods that have good meltability and melt fluidity and can effectively wet PTFE. The fusible polytetrafluoroethylene brand Teflon PFA just meets the requirements of this process, not only has good weldability, but also has good resistance to strength characteristics of the welded seam after welding.
The welding process is as follows:
(1) Before soldering, wipe the surface to be adhered with acetone or ethanol solution and dry it;
(2) If butt welding or reinforced butt welding is used, the welding surface of the workpiece needs to be grooved, generally "V" or "x" type grooves are adopted;
(3) Choose the fusible PTFE electrode of Teflon PFA, which has the characteristics of good meltability and melt fluidity, and can effectively wet the surface of PTFE;
(4) The welding rod is perpendicular to and in contact with the welding surface of the workpiece when the rod is transported, and the welding torch is at 45. The corner is close to the weldment, keep a distance of 5～10mm from the welding surface, the conveying speed is 60～80mm/min, and the welding wind pressure is 0.098～0.294MPa;
(5) Use inert gas as a medium to heat to 420-480°C to melt the PTFE welding surface, and at the same time weld the welding rods together, and machine the welding seam to the required degree after cooling.
Picture 2: PTFE tube source: Shenzhen Dankai
Shenzhen DanKai Technology Co., Ltd. (ShenZhen DanKai Technology Co.,ltd.), whose predecessor was Dongguan Dandi Insulation Material Co., Ltd. Fluoroplastic Material Factory, which was established in 1998, specializes in FEP, PFA, PTFE and other fluoroplastic pipes. R&D, production and sales of rod, sheet and film products and other insulating materials. The company has a senior R&D team with international standards and a production line of fluorine plastic products imported from abroad. Some fluoroplastic products have passed ISO9001, SGS, FDA certification, and have been fully affirmed by domestic and foreign cooperative customers such as Huawei, Foxconn, Midea, ZTE, Intel, and AirTAC. The main products of the company are: ①Tubes: Ptfe tube, Fep tube, Pfa tube, Pvdf tube; ②Heat shrinkable tube: Ptfe heat shrinkable tube, Fep heat shrinkable tube, Pfa heat shrinkable tube, Pvdf heat shrinkable tube; ③Plate rod Membrane: Ptfe board and rod film, Fep board and rod film, Pfa board and rod film, Pvdf board and rod film; ④Insulation materials: silica gel, PE, PVC, UPE, etc.; ⑤Special category: PFA imported connector, spiral tube, spring tube , Rotary cut tube, welding rod, tee, straight-through, gasket, joint, taper rod, flared tube, sealing tube, braided tube, bellows, etc. At the same time, fluorine plastic products of various specifications can be customized and processed according to customer requirements.
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