PTFE introduced
PTFE (Teflon or PTFE), commonly called "plastic Wang," Chinese goods were "Teflon", "Tefulong", the "special Fulong", "Thai-fluoride." It is from the polymerization of ethylene tetrafluoroethylene from the polymer has excellent chemical stability, corrosion resistance, sealing, lubrication is not high viscosity, electrical insulation and a good anti-aging endurance. To +250 ℃ to a temperature of -180 ℃ long-term work, with the exception of molten metal and liquid sodium fluoride, the ability of all other chemicals, in the not-boiled water from the changes. For engineering plastics can be made of teflon tubes, rods, belts, plates, films and so on. Generally applied to the high performance requirements of the corrosion-resistant pipes, containers, pumps, valves, as well as radar and high-frequency communications equipment, radio equipment. 2002 East-ho hose from Tianjin Science and Technology Co., Ltd. under the East-ho PTFE Products Co., Ltd. took the lead to introduce Japan's advanced technology and equipment to develop and produce a successful PTFE hoses, hose PTFE spiral , PTFE steam hoses, Teflon advanced high-pressure hoses and other domestic products. Dispersed liquid can be used as insulation materials and impregnation of metal, glass, ceramics, such as the surface of anti-corrosion layer. Poly tetrafluoroethane various circles, poly PTFE gaskets, poly tetrafluoroethane Pan-gen widely used in all types of anti-corrosion and other pipeline flange seal. Besides, it can be used for spinning, PTFE fiber - Fluoride-lun (foreign goods called Teflon). At present, various types of Teflon products in the chemical industry, machinery, electronics, electrical equipment, military and aerospace, environmental protection, and the national economy such as bridges in the area has played a pivotal role.

Name
Units
Indicators

Density
Kg / m3
2.10-2.30 × 103

Crystallinity
%
Resin 93 ~ 97
Quenching products 50 ~ 65
Not quenched products 63 ~ 85

Melting point
℃
327

Heat distortion temperature
℃
55

Vicat softening point
℃
110

Thermal decomposition temperature
℃
> 415

Line expansion coefficient (the direction perpendicular to the pressure)
1 / ℃
20 to 60 ℃ 10.3 × 10-5
20 ~ 100 ℃ 10.5 × 10-5
20 ~ 150 ℃ 11.4 × 10-5
20 ~ 200 ℃ 12.8 × 10-5

Thermal Conductivity
W / mK
0.256

Poisson's ratio (25 ℃)

0.40

Refractive index
%
1.37

Water absorption

<0.01

The contact angle of water

114 ° -115 °

Expansion of the surface
N / Cm
18.5 × 10-5

Dielectric constant (10 H2)

≤ 1.8-2.2

Volume resistivity
Ω m
≥ 1 × 1015

Surface Resistivity
Ω
> 1010

Arc Resistance
S
≥ 300

Tensile Strength
MPa
27.6

Elongation at break
%
238

Compression modulus of elasticity
MPa
280

Compressive strength of 5%
MPa
12.9

Impact Strength (gap)
KJ/m2
2.0

Flexural Strength
MPa
20.7

Flexural modulus of elasticity
MPa
700

Friction coefficient (Load 2 MPa) (time 30 mm)

0.11

Wear (ibid.)
Mg
249

Wear track width (ibid.)
Mm
15.8

Note: For HG2-234-76 PTFE resin technical standards stipulated by the index value.
Our according to the "plastic test" (international) Determination from the measured values.






Polytetrafluoroethylene (PTFE) the use of advantages

High temperatures - use of the working temperature of 250 ℃.
Low temperature resistant - have good mechanical toughness; even if the temperature dropped to -196 ℃, but also maintain a 5% elongation.
Corrosion resistance - for the majority of chemicals and solvents, inert show, capability strong acid alkali, water and various organic solvents.
Resistant to climate - the aging of plastics in the best life.
High Lubrication - solid material in the lowest friction coefficient.
Not adhesion - is the smallest of solid materials surface tension, adhesion of any substance.
No poison - a physical inertia, as artificial blood vessels and organs long-term in vivo without adverse reaction.