Kodi mitundu yosiyanasiyana ya polypropylene ndi iti?

Pali mitundu iwiri ikuluikulu ya polypropylene yomwe ilipo: ma homopolymers ndi ma copolymers. Ma copolymers amagawidwanso m'magulu a block copolymers ndi random copolymers.

Gulu lililonse limagwirizana bwino ndi ntchito zina kuposa zina. Polypropylene nthawi zambiri imatchedwa "chitsulo" cha makampani opanga pulasitiki chifukwa cha njira zosiyanasiyana zomwe ingasinthidwe kapena kusinthidwa kuti ikwaniritse bwino ntchito inayake.

Izi nthawi zambiri zimachitika poika zowonjezera zapadera kapena kuzipanga mwanjira yapadera. Kusinthasintha kumeneku ndi chinthu chofunikira kwambiri.

Homopolymer polypropylenendi kalasi yogwiritsidwa ntchito nthawi zonse. Mutha kuganiza izi ngati momwe zinthu za polypropylene zimakhalira nthawi zonse.Copolymer ya blockPolypropylene ili ndi mayunitsi a co-monomer omwe amakonzedwa m'maboloko (ndiko kuti, mu kapangidwe kake kokhazikika) ndipo ali ndi pakati pa 5% mpaka 15% ya ethylene.

Ethylene imawonjezera zinthu zina, monga kukana kugwedezeka pomwe zowonjezera zina zimawonjezera zinthu zina.

Copolymer yosasinthikaPolypropylene – mosiyana ndi block copolymer polypropylene – ili ndi mayunitsi a co-monomer omwe amakonzedwa m'njira zosakhazikika kapena zosasinthika motsatira molekyulu ya polypropylene.

Kawirikawiri amaphatikizidwa ndi ethylene pakati pa 1% mpaka 7% ndipo amasankhidwa kuti agwiritsidwe ntchito ngati pakufunika chinthu chosavuta komanso chomveka bwino.