Isishwankathelo: Ukuba ufuna ukwenza inkqubo ye-compound engenazinyibilikisi usebenzisa ngokuthe chu, kubalulekile ukukhetha i-compound adhesive ngokuchanekileyo. Eli nqaku lizisa indlela yokukhetha i-compound adhesive engenazinyibilikisi efanelekileyo kakhulu kwi-substrates kunye nezakhiwo ezidibeneyo.
Ngokukhula nokwanda kobuchwepheshe be-composite obungenazo izinyibilikisi, ii-substrates zefilimu ezincinci ngakumbi nangakumbi zinokusetyenziselwa i-composite engenazo izinyibilikisi. Ukusebenzisa ubuchwepheshe be-composite obungenazo izinyibilikisi ngokuzinzileyo, kubalulekile ukukhetha i-composite adhesive efanelekileyo. Ngezantsi, ngokusekelwe kumava ombhali, siza kwazisa indlela yokukhetha i-adhesive efanelekileyo engenazo izinyibilikisi.
Okwangoku, i-lamination eyomileyo kunye ne-lamination engena-solvent ziyafana. Ke ngoko, ukuze kuzinziswe ukusetyenziswa kwetekhnoloji ye-lamination engena-solvent, ingongoma yokuqala kukuqonda ngokupheleleyo ulwakhiwo lwemveliso yefektri yokupakisha, ukwahlulahlula ulwakhiwo lwemveliso ngokweenkcukacha, ukwahlulahlula ulwakhiwo lwemveliso olunokusetyenziselwa i-lamination engena-solvent, uze ukhethe i-adhesive efanelekileyo engena-solvent. Ngoko ke, ungazikhetha njani ngokufanelekileyo ii-adhesive ezingena-solvent? Thelekisa enye emva kwenye kwezi zinto zilandelayo.
- amandla okuncamathelisa
Ngenxa yobunzima kunye nokwahluka kwezinto zokupakisha, unyango lomphezulu wezinto ezisetyenziswayo luyahluka kakhulu. Izinto zokupakisha eziqhelekileyo eziguquguqukayo nazo zineempawu ezahlukeneyo, ezifana ne-PE, i-BOPP, i-PET, i-PA, i-CPP, i-VMPET, i-VMCPP, njl. Kukwakho nezinye izinto ezingasetyenziswa rhoqo kwiipakethe eziguquguqukayo, ezifana ne-PS, i-PVC, i-EVA, i-PT, i-PC, iphepha, njl. Ke ngoko, i-glue engenasombululo ekhethwe ngamashishini kufuneka inamathele kakuhle kwiimpahla zokupakisha eziguquguqukayo.
- Ukumelana nobushushu
Ukumelana nobushushu kubandakanya izinto ezimbini. Enye kukumelana nobushushu obuphezulu. Okwangoku, ukutya okuninzi kufuneka kubulawe iintsholongwane kubushushu obuphezulu, okunye kubulawa iintsholongwane kubushushu obuphakathi kwama-80-100.° C, ngelixa ezinye zicocwa ngokubulala iintsholongwane kwi-100-135° C. Ixesha lokubulala iintsholongwane liyahluka, ezinye zifuna imizuzu eli-10-20 kwaye ezinye zifuna imizuzu engama-40. Ezinye zisacocwa nge-ethylene oxide. Izinto ezahlukeneyo zineendlela ezahlukeneyo zokubulala iintsholongwane. Kodwa i-adhesive engenaso isinyibilikisi ekhethiweyo kufuneka ihlangabezane nezi mfuno zobushushu obuphezulu. Ingxowa ayinakunyibilika okanye iguquguquke emva kobushushu obuphezulu. Ukongeza, izinto ezicociweyo nge-adhesive engenaso isinyibilikisi kufuneka zikwazi ukumelana nobushushu obuphezulu obungama-200° C okanye 350° C ngoko nangoko. Ukuba oku akunakwenzeka, ukutywinwa kobushushu bebhegi kunokubangela ukuqhekeka.
Okwesibini kukumelana nobushushu obuphantsi, okwaziwa ngokuba kukumelana nokukhenkceza. Izinto ezininzi zokupakisha ezithambileyo ziqulethe ukutya okukhenkcezisiweyo, okufuna izincamathelisi ezingenasombululo ukuze zikwazi ukumelana nobushushu obuphantsi. Kubushushu obuphantsi, izinto eziqinisiweyo zizincamathelisi ngokwazo zinokuba lukhuni, zibe buthathaka, ziqhekeke, kwaye ziqhekeke. Ukuba ezi zinto zenzeka, oko kubonisa ukuba izincamathelisi ezikhethiweyo azikwazi ukumelana nobushushu obuphantsi.
Ngoko ke, xa ukhetha izincamathelisi ezingenazinyibilikisi, ukuqonda okuneenkcukacha kunye nokuvavanya ukumelana nobushushu kuyimfuneko.
3. Impilo noKhuseleko
Izincamathelisi ezingenazinyibilikisi ezisetyenziswa ekupakisheni ukutya namayeza kufuneka zibe nokusebenza kakuhle kococeko nokhuseleko. Imithetho engqongqo ikhona kumazwe ahlukeneyo kwihlabathi liphela. I-US FDA ihlela izincamathelisi ezisetyenziswa kwizixhobo zokupakisha ezidityanisiweyo zokutya namayeza njengezongezo, inciphisa izixhobo ezisetyenziswa ekwenzeni izincamathelisi kwaye ithintele ukusetyenziswa kwezinto ezingabandakanywanga kuluhlu oluvunyiweyo lwezinto eziluhlaza, Kwaye izixhobo ezidityanisiweyo ezenziwe ngesi sincamathelisi zihlelwe kwaye zilinganiselwe kumanqanaba obushushu azo okusetyenziswa, kubandakanya ukusetyenziswa kobushushu begumbi, ukusetyenziswa kokubulala iintsholongwane okubilayo, ukusetyenziswa kokubulala iintsholongwane ngomphunga kwi-122 ° C, okanye ukusetyenziswa kokubulala iintsholongwane ngomphunga kwi-135 ° C nangaphezulu kokusetyenziswa kokubulala iintsholongwane ngomphunga ngobushushu obuphezulu. Kwangaxeshanye, izinto zokuhlola, iindlela zokuvavanya, kunye neempawu zobugcisa zezinto zokupakisha nazo zenziwe. Kukwakho nemigaqo efanelekileyo kunye nemiqathango kwi-GB9685 esemgangathweni yaseTshayina. Ke ngoko, izincamathelisi ezingenazinyibilikisi ezisetyenziselwa iimveliso zokuthumela ngaphandle kurhwebo lwangaphandle kufuneka zithobele imigaqo yendawo.
4. Ukuhlangabezana neemfuno zezicelo ezizodwa
Ukusetyenziswa ngokubanzi kwee-composites ezingenasombululo kwicandelo lokupakisha okuguquguqukayo kuye kwakhuthaza ukwandiswa kwazo kwiindawo ezinxulumene noko. Okwangoku, kukho iindawo ezikhethekileyo apho zisetyenziswe khona:
4.1 Ukupakisha iphepha le-PET elihlanganisiweyo elingenasinyibilikisi
Iiphepha zePET zenziwe kakhulu ngezinto zePET ezinobukhulu obuyi-0.4mm nangaphezulu. Ngenxa yobukhulu nokuqina kwale nto, kuyimfuneko ukukhetha iglu engenasombululo enokunamathela okuphezulu kokuqala kunye ne-viscosity ukwenza le nto. Imveliso egqityiweyo eyenziwe ngolu hlobo lwezinto ezidityanisiweyo idla ngokufuna ukwenziwa ngeemilo ezahlukeneyo, ezinye zazo ezifuna ukunyatheliswa, ngoko ke iimfuno zamandla exolo nazo ziphezulu. I-WD8966 eyenziwe yiKangda New Materials inokumelana okuphezulu kokuqala kunye nokunyatheliswa, kwaye isetyenziswe ngempumelelo kwi-PET sheet composite.
4.2 Ukupakisha ilaphu elingalukwanga elingenazo izinyibilikisi
Amalaphu angalukwanga asetyenziswa kakhulu kwaye aneentlobo ngeentlobo. Ukusetyenziswa kwamalaphu angalukwanga kwiindawo ezingenazinyibilikisi kuxhomekeke kakhulu kubukhulu belaphu elingalukwanga kunye nobunzima beefayibha. Ngokuthe ngqo, okukhona ilaphu elingalukwanga lixineneyo, kokukhona lingcono ilaphu elingenazinyibilikisi. Okwangoku, iglu eshushu enyibilikayo ye-polyurethane enenxalenye enye isetyenziswa kakhulu kumalaphu angalukwanga angenazinyibilikisi.
Ixesha lokuthumela: Disemba-12-2023