PTFE, PFA, FEP, PVDF Fluoroplastic products industry experts
Analysis of the manufacturing method of ptfe teflon joint
Classification:
Industry dynamics
Author:
PFA tube little sister
Source:
PFA tube little sister
Release time:
2010-01-12
Visits:
Introduction of 1. Teflon
Polytetrafluoroethylene (Polytetrafluoroethylene), English abbreviation for PTFE,(commonly known as "plastic king, Hara"), brand name Teflon®In China, because of the pronunciation, the trademark "Teflon" is also called "Teflon", "Teflon", "Teflon", "Teflon", "Teflon" and so on, all of which are transliterations of "Teflon.
Products of this material are generally referred to as "non-stick coating"; it is a synthetic polymer material that uses fluorine to replace all hydrogen atoms in polyethylene. This material has the characteristics of acid and alkali resistance, resistance to various organic solvents, and is almost insoluble in all solvents. At the same time, PTFE has the characteristics of high temperature resistance, its coefficient of friction is very low, so it can be used for lubrication, and it has become an ideal coating for non-stick pot and water pipe inner layer.
(1) Common features:
Use temperature:-200 degrees to 200 degrees;
Easy processing: can flanging, welding;
Aging resistance: can be exposed to ozone and sunlight for a long time without aging;
High transparency: low refractive index in all plastics, can be very intuitive to see the flow of the medium in the tube;
Corrosion resistance: Can withstand all strong acids, strong oxidants, strong reducing agents and various organic solvents except molten alkali metals, fluorinated media and those above 300 °.
(2) Not commonly used features:
密度：2.14-2.17g/cm³
Volume resistance> 1 × 1018
Surface resistance> 2 × 1013
Arc resistance> 165 seconds no leakage
Low water absorption: water absorption <0.1%
Lower friction coefficient: the friction coefficient is small;
Surface non-stickiness: known solid material heads cannot adhere to the surface;
Incombustible: the air will not burn, in line with the strict requirements of the fire place;
Non-toxic: non-toxic and tasteless, with physiological inertia, no harm to people and the environment.
Figure 1 Teflon Connector Source: Teflon Tube Sister
Brief Introduction of 2. Teflon Joint
1. Type: the joint includes straight-through, elbow and tee. 1/8 "-1", the joint types are: straight-through, 90 elbow and tee. The joint materials are (PTFE, PVDF, PFA and FEP). Different types of joints are selected according to different processes and technical requirements. The ferrule joint has the characteristics of firm connection, high pressure resistance, temperature resistance, good sealing and repeatability, convenient installation and maintenance, and safe and reliable work.
2. Features: high temperature resistance and 260 degrees, corrosion resistance, acid and alkali resistance, anti-aging, easy to install, easy to lock, and not easy to deform after construction.
3. Installation form: buckling type, welding type, clamping type and flared type.
4. Applicable medium: oil, water, gas and other non-corrosive or corrosive media. The stainless steel connector is suitable for medium: sea water, steam, cold water, hot water, oxygen, drinking water, refrigeration, oil, gas, medical gas.
5. Features: The joint has the characteristics of firm connection, high pressure resistance, good sealing performance, safe and reliable work, etc.
3. teflon joint frequently asked questions:
1, how to connect teflon tube:
There are many connection methods for Teflon bellows, which can be flanged, oil connection, threaded connection, quick connector and direct connection with customer parts, and fixed with pipe clip and metal wire. Details may be resolved according to a specific application environment (application scenario).
2. What is the material of Teflon water pipe joint:
First of all need to understand Teflon Teflon is divided into PTFE, FEP, PFA, ETFE several basic types:
Teflon PTFE:PTFE (polytetrafluoroethylene) non-stick coating can be used continuously at 260 ℃, with a maximum use temperature of 290-300 ℃, extremely low friction coefficient, good wear resistance and excellent chemical stability.
Teflon FEP:FEP (fluorinated ethylene propylene copolymer) non-stick coating melts and flows to form a non-porous film during baking. It has excellent chemical stability, excellent non-stick characteristics, and the maximum use temperature is 200 ℃.
Teflon PFA:PFA (perfluoroalkylate) non-stick coatings, like FEP, melt flow when baked to form a non-porous film. The advantage of PFA is that it has a higher continuous use temperature of 260 ℃, stronger rigidity and toughness, and is especially suitable for use in the field of anti-sticking and chemical resistance under high temperature conditions.
4. Teflon Pipe Fitting Specifications
Teflon hose joint common specifications: inner diameter * outer diameter (unit: mm) other specifications can be customized
Metric: 2*4 3*5 4*6 5*7 6*8 8*10 8*12 9*12 10*12 12 12*14 14*16*18 18*20
Imperial: 1/8 inch (1.6*3.2)1/4(3.96*6.35)3/8(6.35*9.525) 1/2 inch (9.5*12.7)3/4(15.88*19.05)1(22.2*25.4)
Can produce specifications, inner diameter of 0.5mm to 200mm, wall thickness of 0.12mm to 3mm.
Fabrication Method of 5. Teflon Joint
The utility model provides a Teflon joint, which comprises: a threaded part, a waist and a pin. The threaded part is a cylinder with an external thread, the waist is a regular hexahedron, and the pin is a cylinder; One side of the waist is a threaded part, and the other side is a pin, and a vacuum hole penetrates the threaded part, waist and pin. A portion of the vacuum hole located at the threaded portion has an enlarged aperture, and the aperture is gradually enlarged at the opening of the threaded portion to form a bell mouth. The utility model has the advantages of compact structure, stable work, capable of preventing ignition and improving production efficiency.
Shenzhen dankai technology co.,ltd (ShenZhen dankai Technology co.,ltd), whose predecessor was dongguan dandi insulation material co.,ltd. fluorine plastic material factory established in 1998, is an intelligent manufacturing enterprise specializing in the research and development, production, sales and service of FEP, PFA, PTFE and other fluorine plastic tube rod sheet membrane products and other insulation materials. The company has international standards of senior R & D team and the introduction of foreign fluorine plastic products production line. Some fluoroplastic products through ISO9001, SGS, FDA certification, Huawei, Foxconn, the United States, ZTE, Intel, AirTAC and other domestic and foreign cooperation customers fully affirmed. The company's main products are: ① pipes: Ptfe PTFE pipes, Fep pipes, Pfa pipes, Pvdf pipes; ② Heat shrinkable tubes: Ptfe heat shrinkable tubes, Fep heat shrinkable tubes, Pfa heat shrinkable tubes, Pvdf heat shrinkable tubes; ③ Plate and rod films: Ptfe plate and rod films, Feep plate and rod films, PE ⑤, Pvdf plate and rod films, etc, spiral tube, spring tube, rotary cutting tube, welding rod, tee, straight, gasket, joint, cone rod, flared tube, sealing tube, braided tube, corrugated tube, etc. At the same time can be customized according to customer requirements processing production of various specifications of fluorine plastic products.
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