Temperature Resistance Characteristics of PVDF Filler
Briefly introduce the temperature resistance characteristics of PVDF fillers.
Temperature Resistance Characteristics of PVDF Filler
Polyvinylidene fluoride (PVDF) is the plastic filler with the best temperature resistance, and its wide operating temperature range gives it unique advantages in both high-temperature corrosive media and low-temperature freezing conditions.
Temperature Resistance Range
Characteristics | Parameters |
Long-term operating temperature | -40℃ to 150℃ |
Short-term withstand temperature | Up to 160-170℃ |
Melting point | Approx. 170℃ |
Heat distortion temperature (1.82MPa) | Approx. 110-120℃ |
PVDF has an extremely wide operating temperature range, capable of long-term stable operation from -40℃ to 150℃. This makes it far superior to PP (≤80℃), PVC (≤60℃), and CPVC (≤100℃), and even better than some metal materials in corrosive media.
High-Temperature Performance
In the high-temperature range of 100-150℃, PVDF is the only choice among plastic fillers:
PP begins to soften and deform above 100℃, losing mechanical strength.
CPVC also softens above 110℃.
PVDF maintains structural integrity and mechanical strength even at 150℃.
For applications such as high-temperature hydrochloric acid absorption (90-120℃), wet chlorine treatment (100-130℃), and hot sulfuric acid washing (80-110℃), PVDF is the only usable non-metallic filler. Although metal fillers have higher temperature resistance, they corrode severely in media such as hydrochloric acid and wet chlorine. Therefore, PVDF has become the standard choice for these harsh conditions.
Low-Temperature Performance
PVDF's toughness at low temperatures is another major advantage:
PP becomes brittle below -10℃ and is easily broken upon impact.
PVC becomes significantly brittle below -5℃.
PVDF maintains good toughness even at -40℃.
For outdoor installations in cold regions or low-temperature processes (such as freeze desulfurization and low-temperature absorption), PVDF's low-temperature impact resistance is far superior to other plastic fillers.
Selection Recommendations
Operating Temperature | Recommended Material |
<80℃ | PP (lowest cost) |
80-100℃ | CPVC or PP (caution when approaching the limit) |
100-150℃ | PVDF |
>150℃ | Use metal or ceramic fillers |
Low Temperature (< -10℃) | PVDF |
Summary
PVDF's temperature resistance characteristics can be summarized as follows: wide applicability from -40℃ to 150℃; the only usable plastic filler at high temperatures; and excellent resistance to brittleness at low temperatures. When the temperature exceeds 100℃, PVDF is the only choice for plastic fillers; above 150℃, metals or ceramics must be used instead. We are a plastic filler supplier in China. For more information, please contact us via email at annayu@169chem.net or WhatsApp at +8618909016373.