Nkibikoresho byingenzi byibanze bya masike, imyenda yashonze iherutse kubahenze mubushinwa, igera hejuru nkibicu. Igiciro cyisoko ryibipimo bya polypropilene (PP), ibikoresho fatizo byimyenda yashonze, nabyo byiyongereye cyane, kandi inganda za peteroli zo mu gihugu zateje umurongo wo guhindura ibintu byinshi bya polypropilene.
Nukuvugako, twakagombye kumenya ko ibikoresho byukuri bishonga bishobora kubora. Bikunze gukoreshwa 2040 kumasoko nibikoresho bisanzwe bya PP, kandi ibikoresho bya PP byashize byose byahinduwe. Kugeza ubu, kumashini ntoya (yahinduwe extruders) kumasoko, ukoresheje ibintu byinshi byamazi ya elegitoronike bidahindagurika. Nini nini ya mashini, nibyiza ingaruka zo gukoresha gushonga kwinshi gushonga ibikoresho bya PP. Ibibazo byubwiza bwimashini nto ubwabyo bifite igice kinini cyimpamvu. Imyenda isanzwe ya meltblown isaba gukoresha urutoki 1500 rwashongeshejwe ibikoresho bidasanzwe byashongeshejwe, hiyongereyeho polar masterbatch hamwe nubuvuzi bwa polar kugirango barusheho kunoza imikorere yo kuyungurura.
Uyu munsi, umwanditsi yakusanyije ingingo yerekeye imikorere iranga ibyahinduwePP ibikoresho byashize, twizeye gufasha buri wese. Niba ushaka gukora imyenda yashonze yujuje ubuziranenge bwigihugu KN90, KN95, na KN99, ugomba kuba usobanukiwe nibikorwa byose byakozwe, ukamenya ibitagenda neza, ukabihimbira. Ubwa mbere, reka duhere kubikoresho byashongeshejwe.
Ingingo yo gushonga cyane yerekeza kumashanyarazi ya PP ibikoresho
Gukora masike ntishobora gukora idafite umwenda wa spunbond hamwe nigitambara cya meltblown, byombi ni ibikoresho byo hejuru byo gushonga ibikoresho bya PP nyuma yo kwangirika. Iyo urwego rwo hejuru rwo gushonga rwa PP rwakoreshwaga mu gukora imyenda ya meltblown, fibre nziza irasohoka, kandi nuburyo bwiza bwo kuyungurura imyenda yaturutse. PP ifite uburemere buke bwa molekulari hamwe no kugabanya uburemere bwa molekile byoroshye kubyara fibre hamwe nuburinganire bwiza.
Ibikoresho fatizo byo gukora S-layer (umwenda wa spunbond) ya masike ahanini ni indangagaciro yo hejuru ya PP hamwe nigipimo cyo gushonga hagati ya 35-40, mugihe ibikoresho byo gukora M-layer (imyenda ya meltblown) ni urwego rwa PP rwashizwe hejuru (1500). Umusaruro wubwoko bubiri bwo gushonga cyane PP ntushobora gutandukanywa nibintu byingenzi byingenzi, aribintu byangiza umubiri wa peroxide.
Bitewe nubusanzwe buke bwo gushonga bwa PP isanzwe, kugenda kwayo muri leta yashongeshejwe ni bibi, bigabanya imikoreshereze yabyo mubice bimwe. Mugushyiramo peroxide kama kugirango ihindure polypropilene, igipimo cyo gushonga cya PP kirashobora kwiyongera, uburemere bwacyo burashobora kugabanuka, kandi uburemere bwa molekile ya PP burashobora kugabanuka, bikavamo kugenda neza no gushushanya cyane. Kubwibyo, PP yahinduwe no kwangirika kwa peroxide irashobora gukoreshwa cyane muburyo bwo gutera inshinge zoroshye kandi zidoda.
Ibikoresho byinshi byangiza peroxide
Peroxide kama ni urwego 5.2 rwimiti yangiza kandi ikenewe cyane mubikorwa, kubika, gutwara, no gukoresha. Kugeza ubu, hari peroxide nkeya gusa ikoreshwa cyane mu kwangirika kwa PP mu Bushinwa. Dore bike:
Di tert butyl peroxide (DTBP)
Ibintu nyamukuru biranga ni ibi bikurikira:
Ntabwo byemewe na FDA kugirango byongerwe muri PP, ntibisabwa kubyara umusaruro wibiribwa nibicuruzwa byisuku.
Flash point ni 6 only gusa, kandi irumva cyane amashanyarazi ahamye. 0.1MJ yingufu zirahagije kugirango zitwike umwuka wacyo, byoroshye gucana no guturika mubushyuhe bwicyumba; Ndetse no kurinda azote, irashobora gucana no guturika mubidukikije hejuru ya 55 ℃.
Coefficient ya conducivite iri hasi cyane, kuburyo byoroshye gukusanya amafaranga mugihe cyo gutemba.
DTBP yashyizwe mu bikorwa n’ikigo cy’uburayi gishinzwe imiti (ECHA) mu mwaka wa 2010 nkurwego rwa 3 rutera ihinduka ry’imiterere ya gene kandi ntishobora gusabwa gukoreshwa nk'inyongera mu guhuza ibiryo no guhura n’ibicuruzwa by’abantu, kuko hari ibyago byinshi byo gutera ibinyabuzima.
2,5-dimethyl-2,5-bis (tert butylperoxy) hexane (bita “101 ″)
Iyi agent itesha agaciro nimwe muma peroxide ya mbere ikoreshwa murwego rwo kwangirika kwa PP. Bitewe nubushyuhe bukwiye hamwe nubwinshi bwubwoko bwa ogisijeni ikora, kimwe n’uko FDA yemerewe muri Amerika ndetse na BfR i Burayi, iracyari ikintu cyangiza cyane muri uru rwego. Bitewe nibintu byinshi byimyororokere ihindagurika mubicuruzwa byayo byangirika, ahanini bikaba ari ibintu bihindagurika bifite impumuro nziza, ibivamo hejuru ya PP ifite uburyohe bukomeye. Cyane cyane kubikoresho byashongeshejwe bikoreshwa mugukora mask, kongeramo ibintu byinshi byangiza bishobora gutera ibibazo byimpumuro nziza kumyenda yo gushonga.
3,6,9-Triethyl-3,6,9-Trimethyl-1,4,7-Triperoxynonane (bita “301 ″)
Ugereranije nubundi buryo bwo gutesha agaciro, 301 ifite imikorere myiza yumutekano no gutesha agaciro, kimwe numunuko muke cyane, bigatuma iba imwe mumahitamo yatoranijwe yo gutesha agaciro PP. Ibyiza byayo ni ibi bikurikira:
Umutekano
Ubushyuhe bwihuta bwangirika ni 110 ℃, kandi flash point nayo iri hejuru ya 74 ℃, irashobora gukumira neza kubora no gutwika ibintu byangirika mugihe cyo kugaburira. Nibicuruzwa byizewe bya peroxide mubintu bizwi ko bitesha agaciro.
● Birenzeho
Bitewe nuko habaho imigozi itatu ya peroxide muri molekile, kongeramo igipimo kimwe cyubwoko bwa ogisijeni ikora irashobora gutanga radicals yubusa, bikazamura neza imikorere yangirika.
Impumuro nke
Ugereranije na “Double 25 ″, ibinyabuzima bihindagurika biterwa no kubora ni kimwe cya cumi gusa cyibindi bicuruzwa, kandi ubwoko bwimvange ihindagurika cyane cyane ni est est est est impumuro mbi, nta kurakaza ibintu bihindagurika. Kubwibyo rero, irashobora kugabanya cyane impumuro yibicuruzwa, ifasha guteza imbere amasoko yo murwego rwohejuru hamwe nibisabwa bikabije kandi bikongerera agaciro ibicuruzwa byiyongera kandi bikongerera agaciro ibicuruzwa. umutekano.
Nubwo DTBP itagisabwa nkumukozi wo gutesha agaciro PP yahinduwe, haracyari bamwe mubakora uruganda rwo murugo bakoresha DTBP nkumukozi wo gutesha agaciro kubyara indangagaciro ndende ya PP, ibyo bikaba bitera ingaruka nyinshi mumutekano mubikorwa byumusaruro ndetse n’ahantu hakoreshwa nyuma. Ibicuruzwa bivamo nabyo bifite ibibazo bikomeye byo kunuka, kandi harikibazo kinini cyo kwangwa cyangwa kunanirwa gutsinda ibizamini iyo byoherejwe kumasoko mpuzamahanga.
Dongguan Liansheng Ntabwo Yubatswe Ikoranabuhanga Co, Ltd.yashinzwe muri Gicurasi 2020.Ni uruganda runini rutunganya imyenda rudahuza ubushakashatsi niterambere, umusaruro, no kugurisha. Irashobora gutanga amabara atandukanye ya PP spunbond idoda idoda hamwe n'ubugari bwa metero 3.2 kuva kuri garama 9 kugeza kuri garama 300.
Igihe cyo kohereza: Ugushyingo-09-2024