Ngaba i-polypropylene inetyhefu xa ishushu?
Iipolypropylene, ekwabizwa ngokuba yi-PP, i-resin ye-thermoplastic kunye ne-polymer ephezulu ye-molecular eneempawu ezilungileyo zokubumba, ukuguquguquka okuphezulu, kunye nokumelana nokushisa okuphezulu. Isetyenziswa kakhulu ekupakishweni kokutya, iibhotile zobisi, iikomityi zeplastiki zePP kunye nezinye iimfuno zemihla ngemihla njengeplasitiki yebakala lokutya, nakwizixhobo zendlu, iinxalenye zeemoto kunye nezinye iimveliso zamashishini ezinzima. Nangona kunjalo, ayinayo ityhefu xa ishushu.
Ukufudumeza ngaphezu kwe-100℃: Ipolypropylene ecocekileyo ayinayo ityhefu
Kwiqondo lokushisa kwegumbi kunye noxinzelelo oluqhelekileyo, i-polypropylene yinto engenavumba, engenambala, engeyona inetyhefu, i-semi-transparent granular material. Amasuntswana eplastiki yePP engalungiswanga ahlala esetyenziswa njengeentsimbi zokudlala, kwaye iifektri zokuzonwabisa zabantwana zikwakhetha amasuntswana eplastiki e-PP angafihliyo ukuze alinganise iinqaba zesanti ukuze abantwana badlale nazo. Emva kokuba amasuntswana e-PP acocekileyo angena kwiinkqubo ezifana nokunyibilika, ukukhutshwa, ukubunjwa kokuvuthela, kunye nokubunjwa kwenaliti, zenza iimveliso zePP ezicocekileyo ezihlala zingenabuthi kwiqondo lokushisa. Naxa iphantsi kobushushu obuphezulu, ukufikelela kumaqondo obushushu angaphezu kwe-100℃ okanye nakwimeko enyibilikileyo, iimveliso zePP ezisulungekileyo zisabonisa ukungabi nabutyhefu.
Nangona kunjalo, iimveliso zePP ezisulungekileyo zibiza kakhulu kwaye zisebenza kakubi, njengokunganyangeki ekukhanyeni kunye nokumelana ne-oxidation. Ubomi obuninzi beemveliso zePP ezicocekileyo ukuya kwiinyanga ezintandathu. Ke ngoko, uninzi lweemveliso zePP ezifumanekayo kwimarike ziyimveliso exutyiweyo yepolypropylene.
Ukufudumeza ngaphezu kwe-100℃: Iimveliso zeplastiki zePolypropylene ziyityhefu
Njengoko kukhankanyiwe ngasentla, i-polypropylene ecocekileyo inokusebenza kakubi. Ke ngoko, xa kusetyenzwa iimveliso zeplastiki ze-polypropylene, abavelisi baya kongeza i-lubricant, i-plasticizers, i-stabilizers, kunye nezinye izinto zokuphucula ukusebenza kwazo kunye nokuphucula ubomi babo. Ubushushu obuphezulu bokusebenzisa ezi mveliso zeplastiki zepolypropylene ezilungisiweyo yi-100℃. Ngoko ke, kwindawo yokufudumala ye-100 ℃, iimveliso zepolypropylene ezilungisiweyo ziya kuhlala zingenabungozi. Nangona kunjalo, ukuba ubushushu bokufudumala bungaphezulu kwe-100 ℃, iimveliso zepolypropylene zinokukhupha iiplastiki kunye nezinto zokuthambisa. Ukuba ezi mveliso zisetyenziselwa ukwenza iikomityi, izitya, okanye izikhongozeli, ezi zongezo zinokungena ekutyeni okanye emanzini zize zifunwe ngabantu. Kwiimeko ezinjalo, i-polypropylene ingaba yityhefu.
Nokuba i-polypropylene iyityhefu okanye hayi depeifumana ubukhulu becala kumda wesicelo sayo kunye neemeko ebhengezwe kuzo. Isishwankathelo, i-polypropylene ecocekileyo ayinayo ityhefu ngokubanzi. Nangona kunjalo, ukuba ayiyo polypropylene esulungekileyo, xa ubushushu bokusebenzisa bungaphezulu kwe-100 ℃, ingaba yityhefu.