PTFE Products - Teflon Super Huge Large Size Tube Rod Plate Pipe by SuKo
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mail: info@ptfe-machinery.com
Showing posts with label rod. Show all posts
Showing posts with label rod. Show all posts
Wednesday, August 10, 2022
Sunday, July 24, 2022
Tuesday, July 12, 2022
Monday, May 23, 2022
EVERYTHING YOU NEED TO KNOW ABOUT PTFE RODS
What is a PTFE rod?
PTFE rods, also known as Teflon rods, are unfilled PTFE resin (can contain recycled PTFE resin) molded, paste extruded or plunger extruded for processing various gaskets, seals and lubricating materials that work in corrosive media and electrical insulation parts used at various frequencies. Plunger extrusion process to form the rod.
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Main properties of PTFE rod
Operating temperature: from -200℃ to 260℃; easy processability; aging resistance: it can be exposed to ozone and sunlight for a long time without aging; corrosion resistance: it can withstand strong acids, strong oxidizing agents, strong reducing agents and various organic solvents except molten alkali metals and fluorinated media; outstanding electrical insulation properties.
Other characteristics
Density: 2.16-2.20g/cm3; volume resistance＞1×1018; surface resistance＞2×1013; arc resistance＞165s; water absorption＜0.1%; low friction coefficient; non-adhesive surface: solid materials cannot adhere to its surface; non-combustibility: it will not burn in the air; non-toxic: it’s non-toxic, odorless and physiologically inert, and causes no harm to people and the environment.
Applications of PTFE rod
There are two kinds of PTFE rods: pressed rods and molded rods. Due to excellent chemical resistance and dielectric properties, and minimized friction coefficient, PTFE rods are mainly applied to long products and mechanical parts with non-standard specifications such as seals/gaskets, rings, wear-resistant plates/seat electricity, insulating parts, mechanical parts, and linings in the fields of oil and gas, petrochemical, chemical, instrument and equipment.
Chemical industry: It can be used as anti-corrosion material, produce various anti-corrosion parts, such as pipes, valves, pumps and pipe fittings, and act as the linings and coatings of reactors, distillation towers and anti-corrosion equipment.
Mechanical industry: It can be used as self-lubricating bearings, piston rings, oil seals and sealing rings, etc. Its self-lubrication can reduce wear and heat generation of machine parts and reduce power consumption.
Electronic appliances: It is mainly used in the manufacture of various wires and cables, battery electrodes, battery separators, and printed circuit boards, etc.
Medical materials: Its heat-resistant, water-resistant and non-toxic properties enables itself to be used as sealing and filling materials for medical devices (sterilization filters, beakers, artificial heart and lung devices) and artificial organs (artificial blood vessels, heart and esophagus).
SuKo PTFE Teflon Rod Extruder
1. Complete set of ptfe equipment manufacturer - Push bar machine line: bar extruder, mold design, heating ring, automatic feeding one-stop service.
2. PLC intelligent control: continuous extrusion, sintering, self-adjusting concentricity, automatic feeding, feeding equipment can be used for 6-8 hours, no manual.
3. Extrusion rod quality: smooth surface, high tensile strength, high density.
4. Professional technical guidance: installation and debugging, operation and operation, process setting, maintenance, after-sales service, raw material channel.
Thursday, August 1, 2019
Properties and applications of UHMWPE Rod
Excellent abrasion resistance, good resistance to low
temperature impact, self-lubricity, non-toxic, water and chemical resistance,
heat resistance is better than general PE, disadvantages are heat resistance
(thermal deformation temperature) low, poor processing and molding, surface
hardness, rigidity, creep resistance as general engineering plastics, expansion
coefficient larger. UHMWPE has poor fluidity and extremely high viscosity in
the molten state. It is a rubber-like high-viscosity elastomer. At the early
stage, it can only be molded by pressing and sintering methods.
Higher mechanical properties than ordinary high density
polyethylene. Excellent impact resistance, stress cracking resistance, high
temperature creep resistance, low friction coefficient, self-lubrication
resistance, excellent chemical corrosion resistance, fatigue resistance, noise
damping resistance, nuclear radiation resistance, etc.
The operating temperature is 100 ~ 110℃.Good cold
resistance, can be used at -269℃.The product has a density of 0.935g/cm3 and a molecular weight of 2
million. Its tensile strength at break is 40MPa, elongation at break is 350%,
elastic modulus at bending is 600MPa, and the cantilever beam is constantly
impinged by the gap. Abrasion (MPC method)20mm.
Uhmpe bar can replace carbon steel, stainless steel, bronze
and other materials for textile, paper making, food machinery, transportation,
medical treatment, coal mine, chemical industry and other sectors. Such as
textile industry on the shuttle, shuttle rod, gear, coupling, sweeping rod,
buffer block, eccentric block, rod sleeve, swing consequences and other impact
wear resistant parts. Paper industry to do box cover plate, wiper plate,
compression parts, joints, transmission machinery seal shaft, deflector wheel,
scraper, filter, etc. The lining of hoppers, silos and chutes for powdery
materials in the transport industry.
Uhmwpe rod can be used for all kinds of mechanical parts,
including food machinery gear, worm wheel, worm, bearing. Chemical pumps,
valves, baffles, filters. Medically, it can also be used for heart valves,
short surgical parts, artificial joints and birth control implants. Sports to
do skating floor, ground track, ski, motor sledge parts.
Application scope and polyamide, ptfe similar, wear
resistance than carbon steel, do gear, bearing, bearing bush, star wheel,
valve, pump, guide rail, sealing packing, equipment lining, sliding plate,
artificial joints, fiber for bulletproof jacket, rope, etc.
Ultrahigh molecular weight polyethylene (uhmwpe) rod has
many excellent properties, but few people know its existence, which is mainly
due to the lack of previous research on the melt characteristics of uhmwpe, and
the processing method is basically still in the backward press-sintering
process. In recent years, with the continuous development of uhmwpe processing
technology, its products have been successfully applied in many fields.
Color: primary color (white), black, other colors can be
customized
Friday, July 12, 2019
Study on Sintering of Ptfe
From the
perspective of the three factors that determine the properties of PTFE products
-- molecular weight, crystallinity and voidage, the voidage is mainly affected
by the preforming pressure, and the molecular weight and crystallinity all
change with the different sintering conditions. Therefore, sintering process
conditions play a decisive role in the final properties of products such as
density, hardness, permeability and mechanical properties.
Wang
ping found that the sintering process of PTFE was affected by the rising and
falling speed, sintering temperature and sintering time. The larger the
product, the slower the speed of rising and cooling, the longer the sintering
time. The sintering temperature of suspension resin is higher than that of
dispersion resin. The sintering temperature of pure material products is higher
than that of filled products. In general, the rate of warming is faster than
the rate of cooling. In the same sintering furnace, pure material and filling
products cannot be mixed; Products with different sintering conditions cannot
be mixed. Products of different raw materials cannot be mixed. Taking the
production of 3-layer molded circular plate with diameter of 1 m, thickness of
20 mm, double layer as pure ptfe and middle layer as filled ptfe as an example,
the compression strength, bending strength, hardness and other mechanical
properties of the circular laminated plate produced by this technology have
been greatly improved.
Liu
xianlan studied the forming process characteristics, forming method and mold
design characteristics of PTFE, analyzed the defects and causes of PTFE
products produced by cold pressing and sintering, and put forward the treatment
methods. PTFE can be molded by a variety of preforming processes, such as
molding, extrusion, hydraulic molding, push molding and secondary processing,
and then sintered to the final product.PTFE molding is mostly made of suspended
resin. When the thickness of sheet is less than 1.5mm, disperse resin is used. Its
technological process: resin - sieve (suspension resin after pounding, loose,
and the 20 mesh mesh sieve) - press (PTFE powder loading the mould under
pressure from 20 to 35 MPa, after press compaction forming) - sintering (in 370
~ 380 "C temperature sintering in sintering furnace) - moulded products
(under free state within the mold or after cooling to finalize the design as
required by the board, rods, tubes, gaskets and packing products,
etc.).Hydraulic method is also called the equilibrium method or rubber molding
in its operating process is: put rubber bag in die - connected to the water
pump, filling the water swell the rubber bag into a cylindrical - resin evenly
join between bag and external mold mold closing - continue to gradually
increase the water pressure, water filling up to 12 ~ 13 mpa pressure
maintaining 30 min: after water - decompression, ripping, sintering, cooling is
the use of bright and clean appearance. Push is also called the paste extrusion
molding, 20 ~ 30 mesh sieve dispersion resin and organic liquid (such as
toluene, petroleum ether, the solvent oil) mixture 1:5 paste mixture,
preloading into thick wall cylinder billet, push into the compressor cylinder,
heating, with a plunger push molding, after drying in the 360 ~ 380 ° C
temperature sintering, after cooling products have strong push tube, rod,
etc.Extrusion molding can be divided into two types: screw extrusion and
plunger extrusion. The pre-sintered resin after crushing and sifted is added to
the material cylinder. Through screw rotation or reciprocating push of plunger,
the raw material is transported to the extruder at the same time of compaction.
Wang
ping studied the forming process of PTFE foam material. Suspended
polytetrafluoroethylene is used as raw material, and condensed cyclic aromatic
hydrocarbons are selected as pore-forming agent. After mixing, preforming
products are preformed and sintered. At the initial stage of sintering, drying
process is adopted to make pore-forming agent escape, and then resintering
stage is entered. Foam materials with different dielectric constants can be
prepared in different proportions to meet various requirements.
Chen xu
et al. conducted compression test and sintering test on PTFE, discussed the
relationship between density, compression strength and compression modulus, and
analyzed the compression strength of specimens under different sintering
processes, and obtained more appropriate molding pressure and sintering
process. The results showed that the compression strength of PTFE decreased
with the increase of pressing pressure, and the compression modulus increased
with the increase of pressing pressure. The molding pressure was 27.5mpa,
sintering temperature was 380 C, and the insulation time was 4h.
In order
to overcome the disadvantages of pure ptfe, such as poor abrasion resistance
and large thermal expansion coefficient, Raytheon studied the bronze-filled
particles in ptfe, and expanded the application scope of ptfe. The conventional
warm pressing molding of ptfe is characterized by long cycle, poor performance,
low dimensional accuracy and smoothness, while the warm pressing molding in
this study has fewer working procedures, short cycle and significantly improved
mechanical properties.
Tuesday, June 18, 2019
SUKO is attending a manufacturing expo in Bangkok
Are you still worried
about semi-automatic machines on the market? Are you still anxious about
the equipment for Polymer/PTFE/UHMWPE products? This is a good opportunity now!
SUKO is attending the Manufacturing
Expo(ME) in Bangkok, Thailand on June19-22, 2019. ME is an event dedicated to
machinery and technology for manufacturing and supporting industries, It fully
reflects the level of machinery manufacturing and mechanical equipment
development in Asian.
Here are some popular products we
produced: Auto extrusion/bush molding machine, Auto Gasket Machine,
UHMWPE Rod Extruder, PTFE Tube Extruder, etc. They are all automatic
machines, which help customers improve productivity and quality. These products
also have longer working life and are friendly to environment.
The specific marketing advantages are as
follows:
ü PTFE
Automatic Press Molding Machine-It is suitable for pipe and rod, it has PLC
control and screen touch system. Furthermore, if
PTFE powder is exhausted, it will
alarm Automatically.
ü Auto
Gasket Machine-It has advantages of environmental protection, time saving, high
efficiency, long service life, good heat dissipation and good quality of
accessories.
Come to this event, Here are the newest
innovations and solutions by 2,400 brands from 46 countries.
Come to our booth, We have professional
and technical personnel to solve your problems immediately. What’s more, plenty
of advanced and complete equipment for your choice, such as PTFE AutomaticPress Molding Machine, Auto Gasket Machine, UHMWPE/PTFE Rod Extruder and
so on. In addition, at the international exhibition, you can consult a wide
range of topics for your needs, or compare a large amount of manufacturers to
select your favorite devices.
Detailed exhibition
information is as follows.
Time：June
19-22, 2019
Address：Bangkok
International Trade and Exhibition Centre，
88 Bangna-Trad Road (Km.1), Bangna,
Bangkok 10260, Thailand
Booth Number：3D34
We sincerely hope to establish long-term
cooperation with you, we will try our best to provide high quality and
excellent service, we will cherish every opportunity to cooperate with you!
Looking forward to your visit!
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