I-membrane ephefumlayo ye-PE luhlobo olutsha lwezinto ze-polymer ezingangeni manzi. Ngokwenkqubo yokuvelisa, iimfuno zobugcisa ziphezulu kakhulu kunezo zezinto ezingangeni manzi ngokubanzi. Kwangaxeshanye, ngokwembono yomgangatho, i-membrane ephefumlayo ikwanomsebenzi ofana nowezinye izinto ezingangeni manzi ezingenazo iimpawu.

Ifilimu ephefumlayo ye-PE yinto entsha ephuhla ngokukhawuleza kwihlabathi liphela. Ibizwa ngokuba yifilimu ephefumlayo. Isetyenziswa kakhulu kwiinkalo ezahlukeneyo ngenxa yeempawu zayo zokuphefumla nokungangeni.

1. Ulwakhiwo lwe-PE membrane ephefumlayo
Eyona nto iphambili kwi-PE breathable membrane yi-polyethylene, eyinto eyenziwe nge-polymer eyenziwe nge-polyethylene. Kwimveliso ye-polyethylene, inani elincinci le-4-carbon okanye i-8-carbon a-olefin longezwa njenge-comonomer. Nangona kunjalo, ngenxa yokuba inani le-a-olefin esetyenzisiweyo lincinci, uninzi lweempawu ze-polyethylene zisagcinwa.

umgca wemveliso yefilimu ephefumlayo

I-Polyethene yinto emhlophe ekhanyayo efana ne-wax, eguquguqukayo kwaye inzima, kwaye inokwahlulwa ibe yi-polyethylene ephantsi (LDPE) kunye ne-polyethylene ephezulu (HDPE).

I-LDPE yenziwe nge-ethylene phantsi koxinzelelo oluphezulu (98-250mpa), enoxinano olumalunga ne-0.91-0.92g/m3. I-HDPE iveliswa nge-ethylene polymerized phantsi koxinzelelo lwe-1.0mpa, enoxinano oluphezulu, kuyo yonke indawo yi-0.94-0.96g/m3.

I-Polyethene ayinabungozi kwaye ineempawu ezintle kakhulu ze-dielectric. Ubushushu bayo bokutshintsha kweglasi bumalunga ne--125℃. I-Polyethene inozinzo oluhle kakhulu lweekhemikhali, inokumelana ne-asidi kunye ne-alkali kubushushu begumbi, kodwa kulula ukuyi-oxidation kukukhanya nobushushu, kwaye inokubola nge-photodegradation phantsi kokukhanya kwe-ultraviolet. I-Polyethene ikwanazo neempawu ezintle kakhulu zoomatshini. Inxalenye yekristale inika i-polyethylene amandla aphezulu, kwaye inxalenye engeyiyo ikristale iyinika ukuguquguquka okuhle.

2. Iimpawu ze-PE membrane ephefumlayo
Xa kuthelekiswa nee-membranes ezingaphefumliyo, ii-membranes ze-PE eziphefumlayo zineempawu ezilandelayo:
1. Ingangena kwigesi kodwa ingangeni emanzini ukuze isetyenziswe njengesixhobo esingangeni manzi esinokuxhathisa ukufuma;
2. Ingaphucula ngokufanelekileyo ukuhanjiswa komoya kwindawo yomsebenzisi, nto leyo eluncedo ekuphefumleni ulusu;
3. Ngenxa yeempawu zayo zezixhobo eziluhlaza, i-PE breathable membrane yinto entsha, enobuhlobo nokusingqongileyo kwaye ayingcolisi okusingqongileyo.

3. Ukuhamba kwenkqubo yefilimu ephefumlayo ye-PE
Ngokwembono yetekhnoloji yokucubungula, kukho iindlela ezimbini eziphambili zokucubungula ii-membranes ezinokuphefumla: indlela yokucoca ifilimu ethe tyaba kwaye enye yindlela yokucoca ifilimu evuthelweyo, apho indlela yokucoca isetyenziswa ngakumbi.
Inkqubo ephambili yokuhamba kwendlela yokuphosa yile ilandelayo:
Izinto eziluhlaza ze-PE + ukuxuba i-porogen kunye nokulinganisa i-granulation-extrusion casting-stretching kunye ne-setting-cooling-trimming-coiling.
Kwinkqubo yokuvelisa ifilimu ephefumlayo yePET, inkqubo yokwelula yePE Breathable Film Production Line inefuthe elikhulu ekusebenzeni kwefilimu.
Ngexesha lenkqubo yokusolula, xa amandla okubopha phakathi kwee-porogen caco3 particles kunye ne-PE polymer ejikelezileyo engaphantsi kwamandla okuguqulwa kwe-PE polymer abangelwa kukusolula, i-polymer iya kwahluka ecaleni kwemiphetho ye-caco3, nto leyo ebangela ukuba kubekho ezinye ii-particles ezincinci. Ii-cavities azinakuvumela ii-molecules ezingamanzi ukuba zidlule, kodwa kuphela ii-molecules zegesi, ukuze ifilimu esoluliweyo ibe nomsebenzi wokungangeni manzi nokuphefumla.
Ubungakanani bomngxuma bungalungiswa ngokuxhomekeke kwiimeko zenkqubo ezifana nobukhulu, imilo, indlela yokunweba, kunye nomlinganiselo wokunweba kwamasuntswana e-caco3.
Xa ubushushu bokunwebeka bukwixabiso elithile, njengoko umlinganiselo wokunwebeka unyuka, ububanzi be-PE breathable film buyanda, kwaye ukunwebeka komoya kuyanda, ngelixa ukusebenza kokunwebeka kusiba mandundu; njengoko ubukhulu bukhula, ukunwebeka komoya kuyancipha.

4. Iingxaki kunye neendlela zokulwa ezihlala zidibana nazo kwinkqubo yokuvelisa ifilimu ephefumlayo ye-PE.

1 Le khompawundi ayinamandla
Amandla adibeneyo efilimu ephefumlayo ye-PE aphantsi kakhulu okanye ayi-zero, nto leyo engakwaziyo ukuhlangabezana neemfuno zabathengi kwaphela, nto leyo ebangela ukuba imveliso ilahlwe. Ngenxa yobuchule benkqubo yokuvelisa ifilimu ephefumlayo ye-PE, uxinzelelo oluphantsi lomphezulu, umxholo ophezulu we-agent etyibilikayo, kunye nongcoliseko lomphezulu kunokukhokelela kwi-composites ezibuthathaka.
Ukuxinezeleka okuphantsi komhlaba
Phantsi kweemeko eziqhelekileyo, uxinzelelo lomphezulu wefilimu ephefumlayo ye-PE yokudibanisa okomileyo kufuneka lube ngaphezulu kwe-38 dyn/cm ngaphambi kokuba isetyenziswe.
Le ndlela yokusebenza ibonakalise ukuba ukuba ixabiso loxinzelelo lomphezulu we-PE breathable membrane liphantsi kune-38dyn/cm, oko kunokubangela ukuba amandla adibeneyo aphantsi. Ngaphantsi kwe-36dyn/cm, amandla adibeneyo aya kuba phantsi kakhulu okanye abe zero.
Kwangaxeshanye, amandla e-composite anxulumene nobukhulu befilimu ephefumlayo ye-PE. Ukuba ingaphantsi kwe-30 microns, ayinakudityaniswa ngokulula ngendlela ye-36-38dyn/cm. Xa ubukhulu buyi-30-50 microns, kwaye ixabiso loxinzelelo lomphezulu liyi-37dyn/cm, kuyacingelwa ulwakhiwo lwe-composite. Njenge-OPP/PE, isiphumo esidibeneyo sinokuhlangabezana neemfuno. Kodwa xa ubukhulu bungaphezulu kwe-50 microns, ayinakusetyenziswa ukuba ubukhulu bungaphantsi kwe-38dyn/cm.
Nazi iiseti ezininzi zedatha onokuzisebenzisa:
Ixabiso loxinzelelo lomphezulu we-PE breathable membrane liphezulu kakhulu xa lisanda kuveliswa, kodwa njengoko ixesha lihamba, ixabiso loxinzelelo lomphezulu liyehla kancinci kancinci. Ngokubanzi, i-PE breathable membrane ingagcinwa iinyanga ezi-3-6, kodwa ingagcinwa iinyanga ezi-3-6 ehlotyeni. Ixesha lokugcina ngexesha lonyaka elinomswakama kungcono lingadluli kwiinyanga ezimbini.
Olu qheliselo luye lwabonisa ukuba ixabiso loxinzelelo lomphezulu wefilimu ephefumlayo ye-PE linolwalamano olusondeleyo kakhulu nobukhulu bayo kunye nokusingqongileyo okungqongileyo. Okukhona ubushushu bokusingqongileyo kunye nokufuma kuphezulu, kokukhona ixabiso loxinzelelo lomphezulu lihla ngokukhawuleza, kwaye okukhona ifilimu ityebile, kokukhona incipha ngokukhawuleza.
Ngoko ke, indawo yefilimu ephefumlayo ye-PE ngokubanzi akufuneki idlule kwiinyanga ezintathu, ingakumbi ngexesha lemvula. Ingqwalasela engakumbi kufuneka inikwe umoya kunye nomoya wendawo yokugcina ukuba ixesha lokugcina lide kakhulu ngesizathu esithile, xa kusetyenziswa kwakhona, ukongeza ekuhlolweni kwe-roll-by-roll, kuyimfuneko ukuqwalasela ngokupheleleyo ukuba kuqhubeke na ukusebenzisa imveliso edibeneyo ngokwenjongo yemveliso exutyiweyo, ukuze kuthintelwe ukulahleka.

Impembelelo yezongezo
Xa ifilimu ephefumlayo ye-PE yenziwe ibe yifilimu, izongezo ezithile, ezinjengee-antistatic agents, ii-slip agents, kunye nee-antistatic agents, ngokubanzi kufuneka zongezwe ngokwendlela ezisetyenziswa ngayo.
Ezi zongezo azihlali zimile emva kokwenziwa kwefilimu okanye ukuhlanganiswa kwayo, ingakumbi ii-slip agents, ezidla ngokusebenzisa i-erucamide okanye i-oleamide.
Kukho izizathu ezibini zokwehla kwamandla e-composite ngenxa yee-slip agents:
① Emva kokuba ifilimu ephefumlayo ye-PE ibekwe ixesha elifutshane, i-slip agent ifudukela kumphezulu wefilimu ephefumlayo ye-PE ukuze yenze umaleko obhityileyo oxineneyo. Olu maleko lukhuni luthintela ukubopha kwe-adhesive kunye nophawu lwefilimu ephefumlayo ye-PE, nto leyo ebangela ukuba i-bond ingasebenzisani nomphezulu wefilimu ephefumlayo ye-PE. Iimolekyuli ze-PE ziyadibana, ukunamathela kokuqala okuhlanganisiweyo akunzulu, njengoko ixesha lokunyanga lisanda, amandla adibeneyo awatshintshi kakhulu, kwaye amandla adibeneyo ahlala ephantsi okanye engekho.
Ifilimu ephefumla nge-PE etyibilikayo kakhulu kufuneka isetyenziswe kwiimfuno ezikhethekileyo, kwaye akufuneki ishiywe ixesha elide phantsi kweemeko eziqhelekileyo. Ukuba i-membrane ephefumla nge-PE isetyenziswa ixesha elide ngesizathu esithile, kungcono ukubeka i-membrane ephefumla nge-PE kubushushu obuyi-60-70℃ ngaphezulu kweeyure ezi-8 ngaphambi kokuba idibane. Ngeli xesha, i-agent etyibilikayo iya kusilela kancinci, ngoko phinda ubuyele ngeli xesha. I-Laminating ayinayo ingxaki yamandla aphantsi e-composite, kodwa i-membrane ephefumla nge-PE ayisenazo iimpawu zokutyibilika okuphezulu.
②Ukunamathela kokuqala okudityanisiweyo kuyamkeleka, kodwa njengoko ixesha lokunyibilika lisanda, amandla adibeneyo aya ehla, kwaye kuvela into emhlophe efana nomgubo phakathi kwezi layer zimbini.
Oku kungenxa yokuba izinto eziluhlaza ze-PE ezityibilikayo kakhulu zisetyenziswa ekuveliseni ifilimu ephefumlayo ye-PE. Ngenxa yomxholo ophezulu we-slip agent kwifilimu, ukuhamba kwee-molecules ze-slip agent kwifilimu kuyaqina ngexesha lenkqubo yokunyanga kumaqondo obushushu aphezulu (40-50℃). Inani elikhulu lee-molecules ze-slip agent ziyafudukela kumacala omabini efilimu. Njengoko ixesha lisanda, ubungakanani bokufuduka ukuya kumphezulu buyanda kancinci kancinci. Ukufuduka kwayo kutshabalalisa inkqubo yokubopha ngokomzimba phakathi kwe-adhesive kunye nee-molecules ze-PE kwaye kuya kubakho. Amandla e-bond abuthathaka ayatshatyalaliswa. Okukhona ixesha lide, kokukhona amandla okutshabalalisa anamandla kwaye amandla adibeneyo ayancipha.
Kule meko, ukunyusa ubushushu bokuphilisa kudla ngokusetyenziswa ukuze kukhawuleziswe isantya sokudibanisa iglu ukuze isantya sokuphendula sidlule isantya sokufuduka kwearhente yokutyibilika ukuze kulungiswe iarhente yokutyibilika egqithisileyo kwifilimu ephefumlayo ye-PE. Impembelelo embi.

Ukungcoliseka komphezulu
Iimembrane eziphefumlayo ze-PE azingcoliswanga ngexesha lenkqubo yokuvelisa, kodwa enye yazo kulula ukuyihoya: ungcoliseko lwe-dyne fluid.
Abavelisi abaninzi bee-membrane eziphefumlayo ze-PE basebenzisa izisombululo ze-dyne ezizilungiselele ngokwabo ukuvavanya uxinzelelo lomphezulu we-membrane. Ulwelo lwe-dyne luhlala luyingxubevange ye-ethylene glycol monoethyl ether, ulwelo olungenambala nolucacileyo. Ukuba lungcoliswe ngengozi yi-guide roller ngenxa yesantya salo sokuwohloka kancinci, ifilimu iya konakala xa idlula kwi-guide roller. Isisombululo se-dyne singena kumphezulu we-PE removable membrane kwaye sidityaniswe ngokuqinileyo nee-molecule ze-PE. Asidibani nee-molecules ze-binder emva kokudibana, nto leyo ebangela amandla e-composite asekuhlaleni angama-zero. Le meko inzima ukuyifumana kuhlolo lwangaphambi kokuhlolwa.

Iikhompawundi ezimbini zenqaku elimhlophe.
Le nto ilula ukwenzeka kwifilimu emhlophe yobisi ye-PE; ngokubanzi, ifilimu emhlophe yobisi yongezwa ngenani elithile le-masterbatch emhlophe: i-titanium dioxide exineneyo. Ngenxa yomgangatho owahlukileyo we-masterbatch yombala, ubungakanani besuntswana kunye nobunzima be-titanium dioxide equlethweyo zahlukile, nto leyo ebangela umgangatho owahlukeneyo wefilimu emhlophe yobisi eveliswa emva kokuhlanganiswa kunye nokukhanya okuhlukileyo komphezulu. Ukuba umphezulu wefilimu emhlophe yobisi uvakala urhabaxa kwaye unemingxuma ecaleni, uninzi lweemveliso ezixutywe nefilimu enjalo ziya kuba namabala amhlophe. Izisombululo eziqhelekileyo kule ngxaki zezi zilandelayo: Enye kukunyusa ubungakanani be-adhesive. Eyesibini kukuphinda uprinte umaleko we-inki emhlophe. Nokuba yeyiphi na indlela eyamkelweyo, iindleko ziya kunyuka, ngoko ke ifilimu ye-PE kufuneka ihlolwe ngokungqongqo ngaphambi kokuba isetyenziswe.

3 Emva kokuxuba, imveliso egqityiweyo iba yinto ebangela ukurhawuzelela
Le nto yenzekile kubavelisi abaninzi. Umatshini wokupakisha ozenzekelayo wemveliso edibeneyo awusebenzi kakuhle, okanye ibhegi eyenziweyo kunzima ukuyivula.
Ukudibanisa okomileyo ngokuqhelekileyo kusebenzisa izincamathelisi ezisabelayo ezinamacandelo amabini, ekufuneka zinyangeke kubushushu obuphezulu emva kokudibanisa ukuze kufumaneke amandla aphezulu e-compound. I-arhente yokutyibilika kwifilimu ephefumlayo ye-PE iya kutshintsha ngenxa yotshintsho lobushushu bokunyanga. Kubushushu obuthile, i-arhente yokutyibilika iya kutshintsha iikhemikhali kwaye ilahlekelwe yimpembelelo yayo yokutyibilika. Okukhona imozulu iphezulu, kokukhona umahluko ubaluleke ngakumbi. Okukhona ilahleko inkulu, imveliso yokugqibela iya kuba yi-astringent kwaye ayinakusetyenziswa.

Ngoko ke, ubushushu begumbi lokuphilisa kufuneka bulawulwe ngokungqongqo malunga nama-40℃ kwaye abunakwandiswa ngokungacwangciswanga. Kwakhona, ngokweendlela ezahlukeneyo zokusetyenziswa kwemveliso, khetha ezinye izithako ukuze uphephe ukurhawuzelelwa kwemveliso ngenxa yokukhetha okungafanelekanga kwamanqanaba e-resin.

4 Isitywini sobushushu esibi
Emva kokuba i-compound ingenile, iprosesa yokugqibela ingena ezandleni zomthengi, ngamanye amaxesha ubushushu bendawo obuvala ubushushu buphezulu kakhulu, ukuvala ubushushu akulunganga, njl.njl., obungenakugcinwa kwiimeko ezinzima. Izizathu zesi siphumo ziquka ukuqhekeka kwe-corona, umxholo ophezulu we-agent etyibilikayo, kunye nokongezwa kakhulu kwezinto ezisetyenzisiweyo.

Ukwaphuka kweCorona
Xa ifilimu ephefumlayo ye-PE idlula kwi-roller yokukhupha i-high-voltage ngexesha lenkqubo yokuvelisa, inokubangela ukuqhekeka okuncinci kwefilimu ngenxa yezizathu ezahlukeneyo. Le nto idla ngokuba ngumcu othe tyaba, kwaye indawo yayo iqhelekile. Ixabiso loxinzelelo lomphezulu lidla ngokuba phezulu kakhulu. Ngenxa yokuba ukuqhekeka kwesigqubuthelo esishushu senza into enamaqela e-polar njengomphezulu odibeneyo, le nto ayinayo i-sealability yobushushu. Ke ngoko, iya kusetyenziswa ekwenzeni iibhegi okanye ekupakisheni ngokuzenzekelayo. Ukutywinwa kobushushu okungaphelelanga kwenzeke. I-membrane ephefumlayo ye-PE yongeza into yovavanyo lwexabiso loxinzelelo lomphezulu oludibeneyo xa ingena kumzi-mveliso ukuze ihlolwe ukuze kuthintelwe le nto.

Umxholo wearhente etyibilikayo kakhulu
Ngenxa yomxholo ophezulu we-slip agent kumaleko wokutywina ubushushu wefilimu ephefumlayo ye-PE, iya kubangela ukuba isixa esikhulu sayo siwele kumphezulu wefilimu ephefumlayo ye-PE ukuze senze umaleko oxineneyo, nto leyo ethintela ukutywinwa kobushushu kwefilimu ephefumlayo ye-PE.
Oku kunokwenzeka ukuba kusetyenziswa i-membrane ye-PE ephefumulayo ephelelwe lixesha. Ke ngoko, kuyimfuneko ukukhetha amanqanaba e-resin afanelekileyo ngokweemfuno ezithile zabathengi kwaye uzame ukungasebenzisi iifilimu ezifileyo kwiimveliso ezityibilikayo kakhulu. Emva kokuba le nto yenzekile, kucetyiswa ukuba kusetyenziswe isinyibilikisi ukusula isigqubuthelo esishushu ngokuphindaphindiweyo, kwaye isiphumo siya kuphucuka.

Ukongezwa kakhulu kwezinto ezisetyenzisiweyo
Ukugcina iindleko, inani elithile lezinto eziphinda zisetyenziswe lidla ngokufakwa kwimveliso yee-membranes eziphefumlayo ze-PE. Izinto eziphinda zisetyenziswe zihlala zivuselelwa kubushushu obuphezulu ubuncinane kabini. Kukho inani elithile lokungcola. Emva kokuba i-membrane yenziwe kwakhona, ukusebenza kwayo kokuvala ubushushu kuyaphucuka kakhulu. Ukwehla, ubushushu bokuvala ubushushu buyanda nge-5-10℃. Uvavanyo lubonisa ukuba xa inani elongeziweyo lezinto eziphindiweyo zomaleko wokuvala ubushushu lingama-30%, ubushushu bokuvala ubushushu befilimu ephefumlayo ye-PE buyanda nge-3-5℃. Xa inani elongeziweyo lingama-50%, ubushushu bokuvala ubushushu Bunyusa ubushushu be-6-10℃ kwaye ngokubanzi bufuna umenzi wefilimu ukuba angangezi izinto eziphinda zisetyenziswe kumaleko wokuvala ubushushu kangangoko kunokwenzeka.

5. Uluhlu lokusetyenziswa kwe-PE membrane ephefumlayo
Ngenxa yeempawu zayo ezithambileyo nezikhululekileyo zomzimba nezoomatshini, i-PE breathable membrane ineempawu ezintle kakhulu zokuxinana nokunwebeka.

Iindawo eziqhelekileyo zokusetyenziswa zezi:
● Izinto ezifunekayo imihla ngemihla: ijazi lemvula, isigqubuthelo sesuti, imaski yamehlo, ilaphu letafile, isiciko seshawa, ikhethini yeshawa, ingxowa yamanzi, ilaphu letafile, njl.njl.;
● Iimveliso zococeko: ii-napkins zephepha, ii-napkin zococeko, ii-gowns zonyango-zotyando, iipakethe ezikhethekileyo zonyango kunye nokupakisha ukutya, njl.njl.;
● Izinto zokupakisha: iikhompyutha, izixhobo zomoya opholileyo, izigqubuthelo ezingangeni luthuli, izigqubuthelo zeemoto, izigqubuthelo ezithambileyo zobuhle, iingxowa zokuthenga, iingxowa zezipho, iifolda zeefayile, njl.njl.;
● Iipakethe zefashoni: iingxowa zobuhle, izinto zokubhala ezikumgangatho ophezulu, amagxa amathe, iikhabhathi, iingxowa zokuloba, iingxowa zezandla, kunye neengxowa, njl.