Wonke umntu kufuneka aqhelane nephepha.Kuba sinokubona zonke iintlobo zeemveliso zephepha kwimiboniso emininzi kubomi bemihla ngemihla.Umzekelo, siqhelene neekomityi zephepha, izitya zephepha, iipleyiti zephepha kunye neebhokisi zokutya okukhawulezayo.Sonke siyazi ukuba iphepha li-hygroscopic (lithatha ngokukhawuleza umswakama) kwaye linamandla aphantsi okuqhuma.Kodwa ukuba uyaqaphela, uya kufumanisa ukuba la maphepha anefilimu ecacileyo, ecwebezelayo, egudileyo ngaphakathi.Leyo yifilimu ye-PE, ebonakala ibeka isambatho somlingo ephepheni, inika amandla amakhulu okungoyiki amanzi kunye neoli.Masityhile imfihlakalo yephepha eliqatywe kunye!
Imixholo
1. Yintoni i-PE?
2. Ukuhlelwa kwePE.
3. Ukuhanjiswa kwamandla okuvelisa i-PE ngokwelizwe.
4. Yintoni i-PE ecatyiswe ngephepha?Isetyenziselwa ntoni?
I-5, Ukuhlelwa kwephepha elifakwe kwi-PE.
6. Ukusetyenziswa kwephepha eliqatywe ngePE.
Yintoni i-PE?
Ngaphambi kokuba siqonde iphepha eligqunywe nge-PE, makhe sithethe malunga nemathiriyeli ekrwada ephambili - i-polyethylene.I-Polyethylene imfutshane kwi-PE, eyi-resin ye-thermoplastic polymerized ukusuka kwi-ethylene.Ukubonakala kwe-polyethylene ngamasuntswana amhlophe e-waxy amhlophe, angenancasa, angenavumba, angenatyhefu kwaye aziva ngathi ngumthwebeba.Uphawu oluphambili lwe-polyethylene luncinci, olunokumelana nokubandayo okugqwesileyo, ukuzinza kweekhemikhali, ukugquma kombane kunye nezinye iimpawu.Ngoko inoluhlu olubanzi kakhulu lwezicelo.Ikakhulu isetyenziselwa ukwenziwa kweefilim, izinto zokupakisha, izikhongozeli, imibhobho, iingcingo kunye neentambo, iimfuno zemihla ngemihla, njl. Ngaphezu koko, inokusetyenziswa njengezixhobo zokugquma eziphakamileyo zoomabonakude, iirada, njl. Ukususela kwisicelo sayo ngo-1922, I-polyethylene iye yaphuhla yaba yeyona resin enkulu yehlabathi kunye nosetyenziso olukhulu lwezinto zokupakisha zeplastiki.Ikwindawo ebalulekileyo kushishino lweplastiki.
Ukuhlelwa kwePE
Ngenxa yeenkqubo ezahlukeneyo ze-polymerization ze-polyethylene, isakhiwo sayo sikwahluke, kwaye iimpawu zemveliso ezihambelanayo nazo zihluke kakhulu.Ikakhulu ingohlulwa ibe: I-Low-Density Polyethylene (LDPE), Linear Low Density Polyethylene(LLDPE), High-Density Polyethylene(HDPE).
I-LDPE: Ikakhulu isetyenziselwa iphepha elenziweyo, ifilimu yezolimo, ifilimu yokupakishwa kwamashishini, ucingo, njl.
I-LLDPE: Isetyenziselwa ikakhulu iingcingo neentambo, imibhobho, iimfuno zemihla ngemihla, njl.
I-HDPE: Isetyenziswa kakhulu kwi-ligatures, iintambo, iminatha yokuloba, njl.
Ukusasazwa komthamo wemveliso ye-PE ngokwelizwe
Ukusukela ngo-Epreli ka-2022, amandla emveliso ye-PE yaseTshayina afikelele malunga ne-29.18 yezigidi zeetoni, ethatha i-21% yomthamo wemveliso wehlabathi we-PE.Inokubonwa kwidatha yokuba amandla okuvelisa i-PE yehlabathi agxininiswe kakhulu e-China, e-United States nase-Saudi Arabia.I-China ngoku lelona lizwe linamandla okuvelisa i-polyethylene emhlabeni.
Yintoni iphepha eliqatywe ngePE?
Sele sinokuqonda okunzulu nge-PE apha ngasentla, lithini ke i-PE eliqatywe ngephepha?Ukubeka nje, i-PE edibeneyo yephepha yinto edibeneyo eyenziwe ngephepha njengesiseko sesiseko kwaye ifakwe ngomgca wefilimu ye-polyethylene kwiphepha lesiseko, oko kukuthi, iinqununu zeplastiki zifakwe phezu kwephepha ngomatshini wokuphosa.Iphepha lilula ukumanzi, kodwa emva kokudibaniswa ngokugqibeleleyo kunye ne-polyethylene, iphepha elifihliweyo linokufikelela kwimiphumo yokungabikho kwamanzi, i-oil-proof and high-temperature resistance.
Ukuhlelwa kwephepha elifakwe kwi-PE
Ngokomahluko phakathi kwenani lefilimu egqunyiweyo, inokohlulwa ibe yi-PE ecatyiswe ngecala elinye, iphepha lePEcoated elinamacala amabini, kunye ne-interlayer PE ecatyiswe ngephepha.
1. Iphepha elinye elicatyiswe yiPE
Iphepha elinye le-PEcoated lifakwe ifilimu ye-PE kwelinye icala lesiseko sephepha.Isetyenziswa kwiikomityi zamaphepha okusela ashushu, iphepha le-hamburger, njl.
2. Iphepha elicatshulwe kabini le-PE
Iphepha eliphindwe kabini le-PE elicatyiswe yi-PE yokwambathisa kumacala omabini ephepha lesiseko.Isetyenziswa kwiikomityi zephepha zokusela ezibandayo.
Iphepha elifakwe kwi-Interlayer
Iphepha eligqunywe ngeSandwich kukubeka iPE yokugquma phakathi kwamaphepha amabini asisiseko ukudibanisa iphepha elinye ukukhulisa ukuguquguquka kwephepha.
Ngokuqhelekileyo isetyenziselwa: ukupakishwa kwe-desiccant, iingxowa zokupakisha ukutya, njl.
Ngokweengubo ezihlukeneyo, zinokuhlulwa zibe ziindidi ezimbini: ifilimu eqaqambileyo kunye ne-sub-film.
Ifilimu eqaqambileyo yifilimu ye-polyethylene ephindwe kabini kunye nomphezulu oqaqambileyo kunye nesandla esigudileyo.Ifilimu ye-matte yifilimu ye-matte ye-polyethylene kunye nefilimu ye-matte enenkungu.
I-sequins inenkcazo ephezulu kwaye umba oshicilelweyo unemibala.Iifilimu zeMatte zithulisiwe ngombala.
Ukusetyenziswa kwephepha eligqunyiweyo
Iphepha elidityanisiweyo linxulumene ngokusondeleyo kubomi bethu bemihla ngemihla kwaye linoluhlu olubanzi lokusetyenziswa, ikakhulu esetyenziswa ukupakisha, ukutya, unyango, i-elektroniki, i-hardware, ukusika ukufa, njl.
Umda wesicelo sephepha eligqunyiweyo:
Ubungakanani bokusetyenziswa kwephepha eligqunyiweyo
1. Iikhemikhali: ukupakishwa kwe-desiccant, iibhola ze-moth, i-powder yokuhlamba, i-preservatives.
2. Ukutya: iinyanda ze-noodle, ukupakishwa kwe-ayisikrimu, ubisi.
Ixesha lokuposa: Nov-16-2022
