Tetrachlorethylene (PCE) thiab Trichlorethylene (TCE) yog chlorinated kua hydrocarbons, feem ntau yog siv los ua cov tshuaj degreaser rau kev ntxuav txias ntawm fabricated hlau qhov chaw. Lawv ua hauj lwm raws li cov kuab tshuaj rau resins, rog, roj, waxes, roj hmab, xim, cellulose esters thiab ethers, thiab varnishes.
Tetrachloroethylene yog dab tsi?
Tetrachlorethylene, tseem hu ua perchlorethylene (PCE los yog PERC), yog cov kua tsis muaj xim tsis muaj xim uas siv rau kev ua haujlwm tu qhuav thiab ua cov khoom pib los ua cov khoom sib txuas.
Trichloroethylene yog dab tsi?
Trichlorethylene (TCE) yog cov kuab tshuaj tsis muaj zog uas siv rau hauv ntau qhov kev lag luam (xws li aircraft, spacecraft, electronics) kom tshem tawm cov roj ntawm cov hlau.
Lawv yog cov tshuaj tsis muaj xim. TCE yog cov kuab tshuaj siv los ntxuav cov hlau. PCE yog siv los ntxuav qhuav thiab hlau degreasing. TCE thiab PCE degrade hauv av hauv av dhau sijhawm rau VC.