Ilaphu lePolypropylene (PP) elingalukwanga lisetyenziswa kakhulu ngenxa yokusebenza kwalo okugqwesileyo, iindlela zokulungisa ezilula, kunye nexabiso eliphantsi. Ngokukodwa kwiminyaka yakutshanje, isetyenziswe ngokubanzi kumasimi anje ngokhathalelo lwempilo, iimpahla, izinto zokupakisha, izinto zosula, izinto zokugquma kwezolimo, i-geotextiles, izixhobo zokuhluza kwimizi-mveliso, njl.
Ngenxa yesakhiwo esingeyo-polar sePP, esingenawo amaqela e-hydrophilic, ilaphu le-PP elingalukiweyo alinamsebenzi wokufunxa amanzi. Ukuguqulwa kwe-Hydrophilic okanye ukugqiba kuyimfuneko ukwenza amalaphu e-hydrophilic PP angalukwanga.
I. Indlela yokulungiselela amalaphu e-hydrophilic angalukwanga
Ukuze kuphuculwe i-hydrophilicity ye-PP ye-nonwoven fabrics, kukho iindlela ezimbini zokuphucula ukumanzi kwazo: ukuguqulwa komzimba kunye nokuguqulwa kweekhemikhali.
Ukuguqulwa kweekhemikhali ikakhulu kutshintsha i-molecular structure ye-PP kwaye yongeza amaqela e-hydrophilic kumaketanga e-macromolecular, ngaloo ndlela iguqula i-hygroscopicity yayo. Kukho iindlela ezininzi ezifana ne-copolymerization, i-grafting, i-cross-linking, kunye ne-chlorination.
Ukuguqulwa komzimba kutshintsha ubukhulu becala ubume obuphezulu beemolekyuli ukuphucula i-hydrophilicity, ngokuyininzi ngokuguqulwa kokudibanisa (phambi kokujikeleza) kunye nokuguqulwa komphezulu (emva kokujikeleza).
II. Ukuguqulwa okuxutyiweyo (ujikelezo lwangaphambili)
Ngokwamaxesha awohlukeneyo okongeza ezongezo ezilungisiweyo, zinokwahlulwa ngokwendlela ye-masterbatch, indlela epheleleyo yegranulation, kunye ne-spin coating ye-ejenti yenaliti.
(1) Indlela ye-masterbatch yombala eqhelekileyo
Le yindlela ebalulekileyo yokuvelisa amalaphu e-hydrophilic angalukwanga ngabavelisi belaphu abangalukwanga.
Okokuqala, izongezo ze-hydrophilic eziqhelekileyo zenziwe ngamasuntswana e-jellyfish ngabavelisi bomthi, emva koko zidityaniswe ne-PP ejikelezayo ukwenza ilaphu.
Iinzuzo: Imveliso elula, akukho mfuneko yokongeza naziphi na izixhobo, ezifanelekileyo kwimveliso yebhetshi encinci yeenkomo, ngaphezu kokuqina kwayo okuqinileyo kwe-hydrophilic.
Izinto ezingeloncedo: I-hydrophilicity ecothayo kunye nokusebenza kakubi kokusebenza, ihlala isetyenziswa kumalaphu asontayo. Iindleko eziphezulu, amaxesha ama-2 ukuya kuma-3 aphezulu kunokuguqulwa komhlaba.
I-spinnability embi ifuna ukulungiswa kwenkqubo. Abanye abathengi bachithe iitoni ezi-5 zelaphu kwiifektri ezimbini ze-masterbatch zemibala ngaphandle kokuvelisa iimveliso ezigqityiweyo.
(2) Indlela yegranulation epheleleyo
Xuba isilungisi, izilayi zePP, kunye nezongezelelo ngokulinganayo, zigawule phantsi kwesikrufu ukuvelisa amasuntswana e-hydrophilic PP, emva koko unyibilike kwaye uwajikelezise elaphu.
Izinto eziluncedo: Ukuqhubekeka kakuhle, isiphumo esihlala ixesha elide, kunye nelaphu eliphinda lisetyenziswe.
Ukungalungi: Isixhobo esongezelelweyo se-screw extruder siyafuneka, okukhokelela kwiindleko eziphezulu ngetoni nganye kunye ne-hydrophilicity ecothayo, nto leyo eyenza ukuba ilungele imveliso enkulu kuphela.
(3) Isitofu seFangqian
Ngokuthe ngqo yongeza i-hydrophilic reagents, oko kukuthi iipolymers ze-hydrophilic, kwi-screw ephambili yamalaphu angalukwanga kwaye uwaxube kunye ne-PP enyibilikayo ukuze ujikeleze ngokuthe ngqo.
Iingenelo: Isiphumo sihlala ixesha elide kwaye ilaphu lingaphinda lisetyenziswe.
Ukungalungi: Ngenxa yokungakwazi ukuxuba ngokulinganayo, ukujikeleza kudla ngokuba nzima kwaye kungabikho ukuhamba.
III. Ukugqitywa kwe-hydrophilic (emva konyango lokujikeleza)
Ukugqitywa kwe-Hydrophilic yindlela elula, esebenzayo, kunye nexabiso eliphantsi lokuvelisa amalaphu angama-hydrophilic angalukwanga. Uninzi lwabavelisi bethu belaphu elingalukwanga ikakhulu basebenzisa le ndlela. Eyona nkqubo ihamba ngolu hlobo lulandelayo:
I-spunbond eshushu-isolwe ngelaphu elingalukwanga-i-roller yokwambathisa okanye ukutshiza amanzi nge-agent ye-hydrophilic-i-infrared okanye umoya oshushu
Izinto eziluncedo: Akukho miba ye-spinnability, isiphumo esikhawulezayo se-hydrophilic yelaphu elingalukwanga, ukusebenza kakuhle okuphezulu, ixabiso eliphantsi, yi-1/2-1/3 yeendleko ze-masterbatch yombala oqhelekileyo. Ilungele imveliso enkulu;
Ububi: Ifuna ukuthengwa kwezixhobo ezahlukeneyo zasemva kokulungiswa, ezibiza kakhulu. Emva kokuhlamba kathathu, ixesha lokungena kwamanzi landa malunga namaxesha angama-15. Ayikwazanga ukuhlangabezana neemfuno zokuphinda isetyenziswe;
Imveliso enkulu;
Iingenelo kunye nokungonakali kwale ndlela inquma ukuba isetyenziselwa kakhulu kwiimveliso ezilahlayo ezifuna ukugqithiswa okuphezulu kunye ne-hydrophilicity, njengezinto zococeko, i-diapers, i-napkins ye-sanitary, njl.
Ⅳ.Ukusebenzisa i-Complex Hydrophilic Particle PPS03 Indlela
Ukuqwalasela iingenelo kunye nokungalunganga (-) kunye (ii) neendlela, i-hydrophilic mother particle PPS030 yaphuhliswa.
Olu hlobo lwe-jellyfish particle luneempawu ze-dosage ephakathi (ezifana neengqungquthela eziqhelekileyo ze-jellyfish), umphumo okhawulezayo, umphumo wokusabalalisa ngokukhawuleza, umphumo omuhle, umphumo ohlala ixesha elide, ukuchasana kakuhle kokuhlamba, kodwa ixabiso elincinci (elifana ne-jellyfish particles).
I-spinnability elungileyo, akukho mfuneko yokulungelelanisa inkqubo yokuvelisa.
Ifanelekile kwimveliso yebhetshi encinci kunye nokuchasana nokuhlamba okuphezulu, iimveliso ezinokusetyenziswa kwakhona ezifana namahlathi kunye namalaphu ezolimo.
Iimpawu eziphambili zovavanyo lwelaphu le-hydrophilic PP elingalukwanga libandakanya ukufunxwa kwamanzi, i-angle yokunxibelelana, kunye nesiphumo se-capillary.
(1) Izinga lokufunxa kwamanzi: libhekisa kubungakanani bamanzi afunxa ngeyunithi yobunzima belaphu elingaphothiweyo le-hydrophilic ngaphakathi kwexesha eliqhelekileyo okanye ixesha elifunekayo ukumanzisa ngokupheleleyo imathiriyeli. Okukhona ukufunxa kwamanzi, kokukhona umphumo ungcono.
2 Emva kokunyibilika, susa ipleyiti yeglasi kwaye uyipholise ngokwemvelo kwiqondo lokushisa. Ukulinganisa i-equilibrium contact angle usebenzisa iindlela zokuvavanya ngokuthe ngqo. Incinci i-angle yoqhagamshelwano, ingcono. (Ilaphu le-PP elingalukwanga ngaphandle konyango lwe-hydrophilic emva kokufikelela malunga ne-148 ° C).
Ixesha lokuposa: Dec-04-2023