Izixhobo zePolymer zePlastiki yeCosmetic Tube
Iimpawu zendalo zesakhiwo kunye neemeko zomzimba ze ityhubhu yeplastiki yobuhle Izinto zepolymer, kunye nezinto zangaphandle ezichatshazelwa kuzo ngexesha lokusetyenziswa, ezinje ngobushushu, ukukhanya, ioksijini eshushu, iozone, amanzi, iiasidi, iziseko, iibhaktheriya kunye nee-enzyme, zinokukhokelela ekwehleni okanye ekulahlekelweni kokusebenza kwazo. Umzekelo, zinokujika zibe tyheli, zive ukwehla kobunzima beemolekyuli, ziphuke umphezulu, kwaye zilahlekelwe bukukhanya. Okubi ngakumbi, iimpawu zazo zoomatshini, ezinje ngamandla okubetha, amandla okutsalwa kunye nobude, zinokuhla kakhulu, ngaloo ndlela zichaphazele ukusetyenziswa kwazo okuqhelekileyo.
Le meko ibizwa ngokuba kukwaluphala. Ukwaluphala kunokwenzeka kuzo zonke izigaba zobomi. ityhubhu yeplastiki yobuhle izixhobo zepolymer, ukususela ekuhlanganisweni, ukugcinwa kunye nokucutshungulwa ukuya ekusetyenzisweni kokugqibela, okunokukhokelela ekupheleni kwexesha lomsebenzi wazo kunye nenkunkuma enkulu, okubangela inkunkuma enkulu yezixhobo kunye nongcoliseko olukhulu lokusingqongileyo. ityhubhu yeplastiki yobuhle Izinto zepolymer zinokubangela iintlekele ezinkulu kunye nelahleko ezingenakulungiswa.
Ngoko ke, ukulwa nokwaluphala ityhubhu yeplastiki yobuhle Izinto zepolymer ziye zaba yingxaki ekufuneka ijongwe lishishini lepolymer.
Ukwaluphala ityhubhu yeplastiki yobuhle Izinto zepolymer, ingakumbi ukuguga nge-photo-oxidative, zihlala ziqala kumphezulu wezinto okanye imveliso, zibonakala njengokutshintsha kombala, ukuba ngumgubo, ukuqhekeka, kunye nokuncipha kokukhazimla, kwaye emva koko zingene kancinci kancinci ngaphakathi. Iimveliso ezincinci zisengozini yokusilela kwangethuba kunezo ziqinileyo, ngoko ke ukonyusa ubukhulu bemveliso kunokwandisa ubomi bayo benkonzo. Kwiimveliso ezisengozini yokuguga, ugqubuthelo olukhuselayo olunokumelana kakuhle nemozulu lunokusetyenziswa kumphezulu okanye umaleko wezinto ezinokumelana kakuhle nemozulu unokuhlanganiswa kumaleko wangaphandle, ngaloo ndlela ubonelela ngomaleko okhuselayo kumphezulu wemveliso kwaye ulibazise inkqubo yokuguga.
Izinto ezininzi zineengxaki zokwaluphala ngexesha lokwenziwa okanye ukulungiswa, njengempembelelo yobushushu ngexesha lokwenziwa kwepolymer kunye nokwaluphala kwe-thermal oxidative ngexesha lokwenziwa kweprocessing. Ngokunjalo, impembelelo yeoksijini ingancitshiswa ngokongeza izixhobo zokukhupha ioxygen okanye izixhobo zokucoca umoya ngexesha lokwenziwa kwepolymer okanye ukwenziwa kweprocessing. Nangona kunjalo, le ndlela inokuqinisekisa kuphela ukusebenza kwezinto ngexesha lokukhululwa kwefektri kwaye inokusetyenziswa kuphela kumthombo wokulungiswa kwezinto, kwaye ayinakuyisombulula ingxaki yokwaluphala ngexesha lokwenziwa kweprocessing nokusetyenziswa kwakhona.
Uninzi ityhubhu yeplastiki yobuhle Izinto zepolymer ziqulathe amaqela athanda ukwaluphala kwisakhiwo sawo semolekyuli. Ke ngoko, ngokuyila isakhiwo semolekyuli sezinto kunye nokutshintsha amaqela aguga lula ngamaqela angagugi kangako, iziphumo ezilungileyo zihlala zifumaneka.
Okwangoku, indlela esebenzayo kunye nendlela eqhelekileyo yokuphucula ukumelana nokwaluphala ityhubhu yeplastiki yobuhle Izixhobo zepolymer zezokongeza izongezo zokulwa nokuguga. Ngenxa yexabiso lazo eliphantsi kwaye kungekho mfuneko yokutshintsha inkqubo yemveliso ekhoyo, zisetyenziswa kakhulu. Inzuzo yesicelo ikukuba izongezo zokulwa nokuguga zisasazwa kwangaphambili ngexesha lokulungiselela ii-masterbatches, kwaye emva koko zisasazwa kwakhona ngexesha lokucubungula izinto kamva, ukufezekisa injongo yokusasazeka okufanayo kwezongezo kwi-matrix yezinto zepolymer. Oku akuqinisekisi nje kuphela uzinzo lomgangatho wemveliso kodwa kukwathintela ungcoliseko lothuli ngexesha lemveliso, okwenza imveliso ibe nobuhlobo nokusingqongileyo kwaye ibe luhlaza.