Feem ntau siv cov ntaub ntawv thiab cov yam ntxwv rau menyuam yaus lub raj mis qhib

Lub raj mis tiv thaiv menyuam yaus siv cov tais diav polypropylene ua cov khoom siv tseem ceeb. Polypropylene yog ib tug polymer, uas yog ib tug raug stereoregular polymer. Nws cov khoom tsis yog tsuas yog cuam tshuam los ntawm cov txheeb ze molecular loj thiab txheeb ze molecular loj faib, tab sis kuj los ntawm nws cov tsis tu ncua.

Tam sim no, feem ntau ntawm cov kev lag luam tsim khoom yog isotactic polypropylene, nws cov huab cua permeability thiab qhov kev xav tau qis dua polyethylene, thiab nws qhov nqus dej kuj tseem me me (<0.02%), and="" it="" is="" light="" and="" cheap,="" non-toxic="" and="" tasteless.="" pharmaceutical="" packaging="" materials.="" pp="" health="" product="" packaging="" bottles="" are="" resistant="" to="" various="" chemicals,="" including="" strong="" acids,="" strong="" alkalis="" and="" most="" organic="" substances,="" resistant="" to="" 121°c="" high="" temperature="" steam="" sterilization="" and="" ethylene="" oxide="" sterilization,="" not="" suitable="" for="" dry="" heat="" sterilization="" and="" radiation="" sterilization="">

Vim lub zog mechanical siab, kev ntxhov siab tawg tsis yooj yim tshwm sim. Lub ntsiab tsis zoo ntawm polypropylene (PP) yog tias nws muaj qhov tsis zoo ntawm qhov kub thiab txias thiab ua rau nkig ntawm -20 degrees. Nws yog dav siv los ua ntim thiab lwm yam khoom ntim tshuaj. Thaum lub thawv phab ntsa yog tuab, cov khoom siv polypropylene yog milky dawb thiab opaque.