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Generally, PTFE
resins are with below properties:
Tasteless, nontoxic,
odorless.
Resistance to
burning.
Excellent thermal
stability, chemical stability and insulation property.
Physical and
Mechanical properties
PTFE is a tough
material but with poor elasticity. It possesses tensile
strength, elongation lower
hardness because
of its poor intermolecular attraction .Under long term stress,
PTFE would creep.
Specially, the
toughness of PTFE is very good, which does not break under the
pressure 500kg/cm2, so it possesses unique heavy load ability.
PTFE has exceptional chemical stability, exceeding noble metal
(gold and platinum), glass, ceramic enamel, special steel and
special alloy. It can resist to various strong acids, strong
alkalis, :
Oxidants and organic solvents even at high temperature. In
boiling nitro hydrochloric acid, : ketene, alcohol, halo
hydrocarbon, etc. PTFE almost does not change in weight and
prorating .
Uranium fluoride used in nuclear industry also cannot effect a
change on PTFE.
Fused metallic sodium with high temperature can erode PTFE, so
attention must to taken in condition.
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