PTFE conta

PTFE gaskets have excellent properties of creep resistance, cold flow resistance, ultra-low temperature resistance, no pollution, and easy installation and disassembly. Under a small pre-tightening force, it can withstand considerable internal pressure even in a pressure fluctuation environment. It is very suitable for rough or unevenly worn and fragile glass-faced flanges and temperature-changing sealing occasions. We can choose Gore, Klinger, Garlock, Sealon and other expanded PTFE sheets for customers to produce the required gaskets for customers.

avantaj

Yüksek sıcaklık dayanımı-çalışma sıcaklığı 250 ℃’ye ulaşabilir.

Düşük sıcaklık dayanımı-iyi mekanik tokluğa sahiptir; Sıcaklık -196 ℃’ye düşse bile %5 uzamayı koruyabilir.

Korozyon direnci-Çoğu kimyasal ve çözücüye karşı inerttir ve güçlü asitlere ve alkalilere, suya ve çeşitli organik çözücülere dayanabilir.

Weather resistance-has excellent aging life in plastics.

High lubrication-is the low coefficient of friction in solid materials.

Non-adhesion-it means that the surface tension in the solid material is small and does not adhere to any substance. Its mechanical properties have a very small friction coefficient, which is only 1/5 of that of polyethylene. This is an important feature of the perfluorocarbon surface. In addition, because the fluorine-carbon chain intermolecular forces are extremely low, PTFE is non-sticky.

Non-toxic and harmful-with physiological inertia, as an artificial blood vessel and organ implanted in the body for a long time without adverse reactions.

Elektriksel özellikler Politetrafloroetilen, geniş bir frekans aralığında düşük dielektrik sabitine ve dielektrik kaybına sahiptir ve yüksek kırılma gerilimine, hacim direncine ve ark direncine sahiptir.

Radiation resistance Polytetrafluoroethylene has poor radiation resistance (104 rad), and it degrades after being exposed to high-energy radiation, and the electrical and mechanical properties of the polymer are significantly reduced. Application Polytetrafluoroethylene can be formed by compression or extrusion processing; it can also be made into water dispersion for coating, dipping or making fibers. PTFE is widely used as high and low temperature resistant, corrosion resistant materials, insulating materials, anti-stick coatings, etc. in nuclear energy, aerospace, electronics, electrical, chemical, machinery, instruments, meters, construction, textiles, food and other industries.

Atmosferik yaşlanma direnci: radyasyon direnci ve düşük geçirgenlik: atmosfere uzun süreli maruz kalma, yüzey ve performans değişmeden kalır.

Yanmazlık: Oksijen limit indeksi 90’ın altındadır.

Asit ve alkali direnci: güçlü asitlerde, güçlü alkalilerde ve organik çözücülerde çözünmez.

Oksidasyon direnci: güçlü oksitleyiciler tarafından korozyona dayanıklıdır.

Asitlik: Nötr.

PTFE’nin mekanik özellikleri nispeten yumuşaktır. Çok düşük yüzey enerjisine sahiptir.

Polytetrafluoroethylene (F4, PTFE) has a series of excellent performance: high temperature resistance-long-term use temperature of 200~260 degrees, low temperature resistance-still soft at -100 degrees; corrosion resistance-resistance to aqua regia and all organic solvents; Weather resistance-aging life in plastics; high lubrication-with a small coefficient of friction (0.04) in plastics; non-stickiness-with low surface tension in solid materials without adhesion of any substances; non-toxic-with physiological inertness; excellent electrical properties , Is an ideal C-level insulating material.