Ziziphi iimpawu zePolypropylene (PP)?

Ezinye zezona mpawu zibalulekileyo zepolypropylene zezi:
I-1.Ukuchasana kweChemical: Iziseko ezixutyiweyo kunye ne-asidi ayiphenduli ngokukhawuleza nge-polypropylene, eyenza kube yinto efanelekileyo yokukhetha izikhongozelo zolwelo olunjalo, njengama-agent okucoca, iimveliso zoncedo lokuqala, kunye nokunye.
I-2.I-Elasticity and Toughness: I-Polypropylene iya kusebenza nge-elasticity phezu koluhlu oluthile lokuphambuka (njengazo zonke izinto eziphathekayo), kodwa iya kuba ne-deformation yeplastiki ekuqaleni kwenkqubo yokuguqulwa, ngoko ngokuqhelekileyo ithathwa njengento "enzima". Ukuqina ligama lobunjineli elichazwa njengesakhono semathiriyeli ukukhubaza (ngokweplastiki, hayi ngokuqina) ngaphandle kokwaphuka.
3.Ukumelana nokukhathala: I-Polypropylene igcina imilo yayo emva kokunyanzeliswa okukhulu, ukugoba, kunye / okanye ukuguquguquka. Le ndawo ibaluleke kakhulu ekwenzeni iihenjisi zokuhlala.
I-4.I-Insulation: i-polypropylene inokuchasana okuphezulu kakhulu kumbane kwaye iluncedo kakhulu kumacandelo e-elektroniki.
I-5.Transmissivity: Nangona i-Polypropylene inokwenziwa ibonakale, ngokuqhelekileyo iveliswa ukuba i-opaque ngokwemvelo ngombala. I-Polypropylene ingasetyenziselwa izicelo apho ukuhanjiswa kokukhanya okuthile kubalulekile okanye apho kunexabiso lobuhle. Ukuba ukuhanjiswa okuphezulu kuyanqweneleka ke iiplastiki ezinjenge-Acrylic okanye iPolycarbonate lukhetho olungcono.
I-Polypropylene ihlelwa njenge "thermoplastic" (ngokuchasene ne "thermoset") impahla ehambelana nendlela iplastiki ephendula ngayo ukushisa. Iimathiriyeli ze-Thermoplastic ziba lulwelo kwindawo yazo yokunyibilika (malunga ne-130 degrees Celsius kwimeko yepolypropylene).
Uphawu olukhulu oluluncedo malunga ne-thermoplastics kukuba banokufudunyezwa kwindawo yabo yokunyibilika, apholiswe, kwaye baphinde bafudunyezwe ngaphandle kokuthotywa okubalulekileyo. Endaweni yokutshisa, i-thermoplastics efana ne-polypropylene liquefy, evumela ukuba ifakwe inaliti ngokulula kwaye iphinde isetyenziswe kwakhona.
Ngokwahlukileyo, iiplastiki ze-thermoset zinokufudunyezwa kube kanye kuphela (ngokuqhelekileyo ngexesha lenkqubo yokubumba inaliti). Ukufudumala kokuqala kubangela ukuba izinto ze-thermoset zibekwe (ezifana ne-2-part epoxy) okubangelwa utshintsho lweekhemikhali olungenakuguqulwa. Ukuba uzama ukufudumeza iplastiki ye-thermoset kwiqondo lobushushu eliphezulu okwesibini iya kutshisa nje. Olu phawu lwenza imathiriyeli ye-thermoset ibe ngabaviwa abahluphekayo bokuphinda isetyenziswe.