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Zhenjiang Chunhuan Sealing Materials Co., Ltd(Group)
6 Years
| Ask Lasest Price | |
| Brand Name : | CHUNHUAN |
| Model Number : | bronze filled ptfe tube |
| Certification : | ISO 9001:2008 / SGS |
| Price : | Negotiable |
| Payment Terms : | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability : | 15 tons per month |
| Delivery Time : | 5-8 work days |
40 % Bronze Filled + 60 % PTFE Molded Tube for CNC Manufacture with 1-1800 mm Length
Modified Polytetrafluoroethylene (RPTFE)
PTFE has excellent performance, but it also has some shortcomings,
such as poor creep resistance, easy wear, low mechanical strength
and so on. RPTFE composite can be prepared by filling some
reinforcing agents in PTFE (or PCTFE). These fillers can greatly
improve the mechanical strength of PTFE, thus expanding the use of
such materials. Fillers include carbon fiber, graphite, tin bronze
powder, glass fiber, molybdenum disulfide, polyphenyl ester,
para-polyphenyl, polyimide, carbon powder, aramid fiber, calcium
sulfate, stainless steel powder, silicon powder, pigments and so
on. Different fillers have their own characteristics. They can
provide suitable materials according to the requirements of
customers' working conditions, and their shapes and sizes can be
customized at will.
Specification
| OD(mm) | Wall Thickness(mm) | Length(mm) | |
| Paste Extruded Tube | 0.5~25 | 0.1~2.5 | According to customer's request |
| Plug Extruded Tube | 25~250 | 1.5~8 | According to customer's request |
| Molded Tube | 25~2000 | 5~500 | 100~300 |
Tesiting Data Contrast of Some Typical Filled Products
| Item | Pure PTFE | 60% Bronze | 20% Glass fiber | 15% Glass Fiber 5% graphite | 20% Carbon fiber | Unit |
| Density | 2.18 | 3.9 | 2.26 | 2.22 | 2.01 | g/m3 |
| Tensil Strength | 276 | 127 | 175 | 158 | 189 | MPa |
| Elongation at break | 238 | 101 | 207 | 205 | 92 | % |
| ROCKWELL Hardness | 3.2 | 33.8 | 6.4 | 11.3 | 32.1 | - |
| Friction coefficient | 0.13 | 0.18-0.2 | 0.2-0.24 | 0.15-0.17 | 0.16-0.18 | - |
| Bending strength | 207 | 280 | 210 | 225 | 320 | ºC |
Advantages:
♦ High temperature resistance
The working temperature is 250ºC
♦ Low temperature resistance
Good mechanical toughness; even if the temperature drops to
-196ºC,it can also maintain a 5%
elongation.
♦ Corrosion resistance
For most chemicals and solvents, it shows inertia,strong acid and
strong alkali, water and various organic solvents.
♦ Climate resistance
The best aging life among all plastic.
♦ High lubrication
The lowest coefficient of friction in solid materials.
♦ Non adhesion
The smallest surface tension in the solid material,which does not
adhere to any substance.
♦ No toxicity
It has a physiological inertia and has no adverse reaction in the
long term imolantation of artificial blood vessels and organs.
♦ Electrical insulation
It can resist 1500 volts of high voltage electricity.
PTFE filled with other materials:
| Filled materials | Common filled ratio (Quantity %) | Main performance |
| Bronze | 40,60 5,10,15 | Increase hardness and wear resistance; Increase dimensional stability and compressive strength; Not suitable for corrosive or electrical applications |
| Carbon | 5,10,15 | Increases compressive strength,hardness,wear and load properties Good chemical resistance; Improves electrical properties |
| Graphite | 10,15,25 | Improves the deformation under load;Reduces initial wear; Improves thermal and electrical conductivity |
| Glass Fiber | 10,15,25 | Increases compressive strength,rigidity and wear. Reduces creep and cold flow;improve dimensional stability |
| Carbon Fiber | 5,10,15 | Increases compressive strength,hardness,wear,and load properties. Reduces creep and cold flow |
| POB (Polyphenyl ester) | 5,10,15 | Improve the lubricaiton performance;Enhance the mechanical
strength; Increase using temperature |
| BaSO4 | 5,10,15 | Increase compressive strength, hardness and wear resistance Reduces creep |
| SiO2 | 5,10,15 | Increases hardness and wear resistance; Improve Dimensional Stability |
| Glass beads | 5,10,15 | Reduces creep and cold flow; Lower density Increases hardness and wear resistance; |
| Others materials | PEEK (polyetheretherketone),PI(Polyimide),MoS2 are also ok | |
Remarks | Some materials have similar enhancement effect, but degrees of enhancement are different.And they have different prices. More details please contact us | |
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