Qhov txawv ntawm PVDF thiab PEEK yog dab tsi?

PEEK (polyether ether ketone) cov khoom muaj qhov kub thiab txias tsis tu ncua (kwv yees 260 degree), siab tawv thiab hardness, thiab tshwj xeeb siab tensile zog thiab qaug zog. Tsis tas li ntawd, nws muaj cov cua kub zoo, deformation kuj thiab tshuaj stability. Thaum qhov kub nce mus txog 260 degree, cov khoom siv tau zoo heev dielectric zog thiab tuaj yeem tiv taus hluav taws xob hluav taws xob. PEEK muaj cov khoom zoo tshaj plaws, cov khoom siv kho tshuab zoo, kub tsis kam, tshuaj lom neeg ua haujlwm zoo, ua rau nws muaj ntau yam yas qib siab.
Nta: siab mechanical zog, rigidity thiab hardness, kub tsis kam, tshuaj tsis kam thiab hydrolysis tsis kam, hnav tsis kam thiab kev sib txhuam kev ua haujlwm. PEEK tau siv dav hauv aerospace, kho mob, tshuab, tsheb thiab khoom noj khoom haus kev lag luam.
PVDF (polyvinylidene fluoride) muaj zog ntau dua thiab muaj peev xwm ua haujlwm siab dua li PTFE zoo sib xws, tab sis nws qhov smoothness thiab hluav taws xob rwb thaiv tsev yog me ntsis qis dua. Nws muaj lub zog siab thiab toughness ntawm qhov kub thiab txias thiab tuaj yeem tua nws tus kheej. Nws qhov kev ua haujlwm kub yog nyob nruab nrab ntawm - 30 degree C thiab 150 degree C. PVDF ruaj khov rau chloride, bromide thiab lub zog hluav taws xob.
Nta: Loj hauv huab cua, siab tso cai ua haujlwm kub (tuaj yeem ua haujlwm tsis tu ncua hauv qab 150 degree), tshuaj lom neeg corrosion kuj thiab hydrolysis tsis kam, zoo heev ultraviolet tsis kam thiab huab cua tsis kam. High mechanical zog, zoo rigidity, zoo creep kuj. Zoo zawv zawg thiab hnav tsis kam. Inherently tsawg flammability, zoo hluav taws xob rwb thaiv tsev kev ua tau zoo.