Video: Puas yog urethane lom?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Kev lom . Urethane yog tshuaj lom rau tej tsiaj me. Cov neeg uas noj tshuaj nrog tshuaj urethane feem ntau muaj xeev siab raws li kev phiv. Polyurethane, ntawm qhov tod tes, biodegrades qeeb heev thiab feem ntau ua rau qis tshuaj lom pheej hmoo.
Hauv qhov no, urethane puas lom rau tib neeg?
Urethane yog PROBABLE CARCINOGEN hauv tib neeg . Muaj pov thawj tias nws ua rau lub ntsws, siab, ntshav, thiab lwm yam mob qog noj ntshav hauv cov tsiaj. ib carcinogen.
Ib tug kuj nug, puas muaj qhov sib txawv ntawm polyurethane thiab urethane? Polyurethane yog polymer. Polymer yog tshuaj lom neeg lossis sib xyaw ua ke. Qhov no yog li cas, nyob ntawd yog tsis muaj sib txawv ntawm a tshuaj urethane part ib polyurethane ib feem - lawv txhua tus ua los ntawm tshuaj urethane pab pawg Lub sij hawm polyurethane txhais tau tias nyob ntawd yog siv ntau yam urethanes.
urethane yog dab tsi?
Urethane yog lo lus uas hais txog yam tsawg peb yam tshuaj sib txawv: ethyl carbamate, carbamate lossis polyurethane. Txawm hais tias tag nrho cov tshuaj no cuam tshuam los ntawm cov tshuaj muaj pes tsawg leeg ntawm nitrogen, hydrogen thiab oxygen molecules, lawv txawv ntawm lawv cov kev siv.
Puas yog polyurethane yog carcinogen?
Isocyanates yog cov khoom siv raw uas tsim txhua yam polyurethane cov khoom. Isocyanates suav nrog cov tebchaw uas muaj peev xwm ua rau tib neeg carcinogens thiab paub tias ua rau mob qog noj ntshav hauv tsiaj.
Pom zoo:
Puas yog urethane txheej zaub mov muaj kev nyab xeeb?
Raws li tus kws tshaj lij Bob Flexner, txhua qhov kev ua tiav yog zaub mov zoo thaum lawv kho. Polyurethane kua roj vanish tsis muaj qhov paub txog kev phom sij. Txawm li cas los xij, tsis muaj qhov ua tiav yog zaub mov nyab xeeb kom txog thaum nws tau zoo lawm. Txoj cai ntawm tus ntiv tes xoo rau ua kom tiav yog 30 hnub ntawm chav sov (65- txog 75- degrees F)
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