Dab tsi yog roj hmab polyurethane?

Qhov zoo

• Polyurethanes siv tau yooj yim, nrog ntau yam muaj qhov sib xyaw sib xyaw yooj yim los ntawm ntim (piv txwv li 1A: 1B) - tsis tas yuav tsum muaj teev.

• Flexible urethanes muaj nyob rau hauv qhov sib txawv ntawm cov tawv los ntawm gel-zoo li nyuaj rau ntawm lub tsheb log thiab txhua yam nyob hauv.

• Urethane rubbers muaj qhov viscosity tsawg thiab" de-air" lawv tus kheej - tsis muaj nqus degassing yuav tsum tau.

• Urethanes muaj kev txhim kho zoo abrasion thiab yog siv los nrum cov ntaub ntawv zoo li pob zeb.

• Cov nplaim polyurethane yog cov nqi qis dua li ntawm silicones thiab polysulfides

Nyias tsis zoo

• Raws li silicone roj hmab muaj cov khoom tso tawm zoo tshaj plaws, cov roj hmab urethane muaj cov khoom tso tawm tsis zoo thiab yuav ua raws li txhua yam. Cov qauv ua tib zoo npaj yog qhov tseem ceeb kom ua tiav cov pwm ua nrog kev siv roj hmab urethane

• Urethanes yog noo noo thiab yuav ua npuas yog tias nqus tau ntau dhau noo noo (ua pwm nyob sab nraum zoov hnub ntub heev, piv txwv).

• Polyurethanes muaj lub luag haujlwm txwv lub neej tom qab qhib - cov khoom seem yuav cuam tshuam los ntawm ambient ya raws huab cua.