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Analysis on the production method of ptfe Teflon joint
- Categories:Industry news
- Author:PFA tube lady
- Origin:PFA tube lady
- Time of issue:2010-01-12 15:21
- Views:
Analysis on the production method of ptfe Teflon joint
- Categories:Industry news
- Author:PFA tube lady
- Origin:PFA tube lady
- Time of issue:2010-01-12 15:21
- Views:
1. Introduction to Teflon
Polytetrafluoroethylene (Polytetrafluoroethylene), the English abbreviation is PTFE, (commonly known as "Plastic King, Hara"), the brand name Teflon®, in China, due to the pronunciation, the trademark "Teflon" is also called "Special "Flon", "Teflon", "Teflon", "Teflon", "Teflon", etc., are all transliterations of "Teflon".
Products of this material are generally collectively referred to as "non-stick coating"; it is a synthetic polymer material that uses fluorine to replace all hydrogen atoms in polyethylene. This material is resistant to acids, alkalis, and various organic solvents, and is almost insoluble in all solvents. At the same time, PTFE has the characteristics of high temperature resistance, and its friction coefficient is extremely low, so it can be used as a way of lubrication, and it has become an ideal coating for non-stick pots and water pipes.
(1) Common features:
Operating temperature: -200 degrees to 200 degrees;
Ease of processing: can flanging and welding;
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°.
(2) Unusual features:
Density: 2.14-2.17g/cm³
Volume resistance>1× 1018
Surface resistance>2× 1013
Arc resistance> 165 seconds without leakage
Low water absorption: water absorption rate <0.1%
Lower coefficient of friction: the coefficient of friction is smaller;
The surface is not sticky: the known solid material head cannot stick to the surface;
Non-combustibility: Will not burn in the air and meet the strict requirements for fire protection;
Non-toxic: non-toxic, tasteless, physiologically inert, and harmless to people and the environment.
Figure 1 Source of Teflon connector: Miss Teflon tube
2. Introduction to Teflon Joints
1. Type: The joints are straight, elbow, and tee. 1/8"-1", there are three types of joints: straight, 90° elbow, and tee. There are four joint materials (PTFE, PVDF, PFA, FEP). Different types of joints can be selected according to different processes and technical requirements. . The card sleeve joint has the characteristics of reliable connection, high pressure resistance, temperature resistance, good sealing and repeatability, convenient installation and maintenance, and safe and reliable work.
2. Features: high temperature resistance of 260 degrees, corrosion resistance, acid and alkali resistance, aging resistance, easy to install, easy to lock, and not easy to deform after construction.
3. Installation form: crimping type, welding type, card sleeve type, flaring type.
4. Applicable medium: oil, water, gas and other non-corrosive or corrosive media. Among them, stainless steel joints are suitable for media: seawater, steam, cold water, hot water, oxygen, drinking water, refrigeration, oil, gas, and medical gas.
5. Features: The joint has the characteristics of firm connection, high pressure resistance, good sealing performance, and safe and reliable work.
3. Common problems of Teflon joints:
1. How to connect the Teflon tube:
There are many ways to connect Teflon bellows, which can be flanged, oiled, threaded, quick-connected, and directly connected to the customer, and fixed by pipe clamps and metal wires. The details can be solved according to the specific application environment (application scenario).
2. What material is the Teflon pipe joint made of:
First of all, you need to understand that Teflon is divided into PTFE, FEP, PFA, ETFE and several basic types:
Teflon PTFE: PTFE (polytetrafluoroethylene) non-stick coating can be used continuously at 260°C, with a maximum use temperature of 290-300°C, 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 and excellent non-stick characteristics. The maximum use temperature is 200 ℃.
Teflon PFA: PFA (perfluoroalkyl compound) non-stick coating melts and flows during baking to form a non-porous film like FEP. The advantage of PFA is that it has a higher continuous use temperature of 260°C, stronger stiffness and toughness, and is especially suitable for anti-sticking and chemical resistance applications under high temperature conditions.
Four, Teflon pipe joint specifications
Common specifications of Teflon hose joints: inner diameter * outer diameter (unit: mm) other specifications can be customized
Metric system: 2*4 3*5 4*6 5*7 6*8 8*10 8*12 9*12 10*12 12*14 14*16 16*18 18*20
British system: 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)
The specifications can be produced, with an inner diameter of 0.5mm to 200mm and a wall thickness of 0.12mm to 3mm.
Fifth, the production method of Teflon joints
The utility model provides a Teflon joint, which includes: a threaded part, a waist and a pin, the threaded part is a cylinder with external threads, the waist is a regular hexahedron, and the pin is a cylinder; the waist One side is a threaded part, and the other side is a pin, and a vacuum hole penetrates the threaded part, the waist and the pin. The part of the vacuum hole located at the threaded part has an enlarged aperture, and the aperture at the opening of the threaded part is gradually enlarged to form a flared mouth. The utility model has the advantages of compact structure, stable work, can prevent sparking, and improve production efficiency.
Shenzhen DanKai Technology Co., Ltd. (ShenZhen DanKai Technology Co.,ltd.), whose predecessor was Dongguan Dandi Insulation Materials Co., Ltd. Fluoroplastic Material Factory, which was established in 1998, specializes in FEP, PFA, PTFE and other fluoroplastic pipes. An intelligent manufacturing enterprise for the research and development, production, sales and service 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 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 ; ③Board and rod film category: 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, peeling tube, welding rod, tee, straight, 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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