PP/PE/PA/PETG/EVOH Mpempe akwụkwọ mgbochi ọtụtụ oyi akwa Co-extrusion Line
Isi Nkà na ụzụ Paramita
| Ụdị ahịrị | Ụdị ihe eji ewepụta ihe | Obosara ngwaahịa | Ọkpụrụkpụ ngwaahịa | Nhazi mmepụta extrusion |
| 7 oyi akwa co-extrusion | 120/75/50/60/75 | 800-1200mm | 0.2-0.5mm | 500-600kg/saa |
| Ngwunye 9 nke co-extrusion | 75/100/60/65/50/75/75 | 800-1200mm | 0.05-0.5mm | 700-800kg/saa |
Rịba ama: Nkọwapụta ndị a nwere ike ịgbanwe na-enweghị ọkwa tupu oge eruo.
Ọnọdụ ahịa nke ngwa nkwakọ ngwaahịa EVOH
N'ihe gbasara nkwakọ ngwaahịa nri oyi, ndị mmadụ jiri ihe ígwè ma ọ bụ iko mee ihe dị ka nkwakọ ngwaahịa nri iji kewapụ ihe dị iche iche na-abanye n'ime na n'èzí iji hụ na ihe dị n'ime ya dị mma ma baa uru nke ngwaahịa. N'ihi na e nwere ihe atọ dị mkpa na-akpata mmebi nri: ihe ndị dị ndụ (mmeghachi omume enzyme dị ndụ, wdg), ihe ndị dị na kemịkalụ (karịsịa oxidation nke ihe oriri) na ihe ndị dị na anụ ahụ (hygroscopic, nkụ, wdg). Ihe ndị a na-arụ ọrụ na ọnọdụ gburugburu ebe obibi dịka oxygen, ìhè, okpomọkụ, mmiri, wdg, nke na-akpata mmebi nri. Igbochi mmebi nri bụ isi igbochi mmụba nke nje ndị dị ndụ na nri, igbochi oxidation nke ihe oriri site na oxygen, na igbochi mmiri ma nọgide na-enwe ụtọ mbụ nke nri ahụ.
A maara Ethylene-vinyl alcohol copolymer, nke a na-akpọ EVOH, dị ka resin mgbochi atọ kachasị ukwuu n'ụwa yana polyvinylidene chloride (PVDC) na polyamide (PA) [2]. EVOH nwere ike igbochi ikuku ịbanye n'ime nri nke ukwuu, si otú a na-egbochi mmepụta nke nsí na ihe ndị ọzọ na-emerụ ahụ n'ihi mmụba nke nje bacteria, ma nwee ike igbochi mgbanwe nhazi nke oxidation kpatara, ebe ọ na-ejigide isi ísì ma na-egbochi mmetọ isi mpụga. Ọzọkwa, enweghị ihe mgbochi mmiri nwere ike ịkwụghachi site na oyi akwa polyolefin ndị ọzọ. Ya mere, ihe mkpuchi EVOH multilayer nwere ike igbochi mmebi nri nke ọma ma gbasaa ndụ nchekwa. Na mgbakwunye, ọ dị mfe nhazi na ịmepụta, ma nwee ezigbo arụmọrụ nchekwa gburugburu ebe obibi. N'ihi ihe mgbochi gas dị mma, nghọta, nhazi na iguzogide ihe mgbaze nke resin EVOH, ubi ojiji ya na-abawanye na mbara, ọchịchọ ahụ na-etokwa ngwa ngwa.
Resin EVOH nke nwere ihe mgbochi dị elu
1. Njirimara ihe onwunwe
Njirimara ihe mgbochi nke EVOH Njirimara ihe mgbochi nke ihe polymer na-ezo aka n'ikike nchekwa nke ngwaahịa na obere gas molekul, mmiri mmiri, uzuoku mmiri, wdg. Ụdị resin a na-ejikarị eme ihe ugbu a nwere ezigbo ihe mgbochi gụnyere: EVOH, PVDC, PAN, PEN, PA na PET.
2. Mgbe ejiri EVOH mee ihe dị ka ihe mgbochi dị elu, ọ na-ejikarị usoro ihe mejupụtara ọtụtụ oyi akwa eme ihe. Ihe mejupụtara ihe a na-ejikarị eme ihe bụ: PP, HIPS, PE, EVOH, AD, na AD bụ ihe na-arapara n'ime usoro ahụ. Usoro ihe mejupụtara ọtụtụ oyi akwa nwere ike inye ihe niile dị na ihe ọ bụla, melite iguzogide mmiri nke EVOH, ma nweta ihe mgbochi dị elu nwere ihe onwunwe zuru oke. A na-eji ọtụtụ n'ime ha eme ihe na ngwugwu na-agbanwe agbanwe n'oge gara aga, mana resins mejupụtara dị ka PP, PE, na PA adịghị mfe ịkụ n'ihi ike ha dị mma na nkwụsi ike na-adịghị mma, nke na-egbochi ojiji ha n'ọhịa nke nkwakọ ngwaahịa siri ike, karịsịa na ngwaahịa njupụta n'ịntanetị. Polystyrene HIPS na-eguzogide mmetụta nwere ezigbo nkwụsi ike na ihe ịchọ mma dị mma, dabara adaba maka ịkụ nzọ ma dabara adaba maka ihe nkwakọ ngwaahịa siri ike. Ya mere, ọ dị mkpa karịsịa ịmepụta ihe mejupụtara ihe mgbochi EVOH dị elu nke dabara adaba maka nkwakọ ngwaahịa siri ike.
N'ihi enweghị nkwekọ dị n'etiti resin EVOH na resin HIPS, na nnukwu ọdịiche dị na ọnụego resin rheology, ike njikọ dị n'etiti substrate na EVOH, ihe achọrọ maka ihe nrụgide nke EVOH n'oge ịkpụzi nke abụọ, na nkesa oyi akwa EVOH n'oge kalenda iji mepụta mpempe akwụkwọ mejupụtara. Nha nhata nke ihe mejupụtara bụ nsogbu niile dị mkpa na-emetụta arụmọrụ na ojiji nke ihe mejupụtara, ha bụkwa nsogbu siri ike nke a ga-edozi mgbe a na-emepụta ụdị ihe mejupụtara a.
Isi ihe dị na teknụzụ njikọta ọtụtụ oyi akwa bụ ihe mgbakwụnye (AD). Ihe ndị mejupụtara nkwakọ ngwaahịa nke EVOH na-agụnyekarị PPEVOH, mana PP na EVOH enweghị ike ijikọ ozugbo na okpomọkụ, a ga-agbakwunye ihe mgbakwụnye (AD) n'etiti PP na EVOH. Mgbe ị na-ahọrọ ihe mgbakwụnye ahụ, ọ dị mkpa ịtụle ihe mgbakwụnye nke PP dị ka ihe ndabere, nke abụọ bụ ndakọrịta nke viscosity agbaze nke PP na EVOH, nke atọ bụkwa ihe achọrọ maka ihe ndọghachi azụ, iji zere mmebi n'oge nhazi nke abụọ. Ya mere, mpempe akwụkwọ ndị ejikọtara ọnụ bụkarị mpempe akwụkwọ ndị ejiri oyi akwa ise mee (PPADEVOHADPP). /AD/EVOH/AD/R/PP, oyi akwa kachasị mpụta bụ ihe ọhụrụ PP, oyi akwa abụọ ndị ọzọ bụ ihe eji emegharị emegharị PP (PP). Enwere ike iji usoro asymmetric, enwere ike ịgbakwunye ihe ndị ọzọ (PE/HIPS, wdg) maka njikọta. Ụkpụrụ ahụ bụ otu, enwere ike nweta otu usoro njikọta ọtụtụ oyi akwa ahụ.
Ngwa
Ihe e ji EVOH mee nwere ezigbo ihe mgbochi. Site na teknụzụ co-extrusion na PP, PE, PA, PETG na ihe ndị ọzọ, enwere ike ịhazi ya ka ọ bụrụ ihe mkpuchi dị mfe nke nwere akwa ise, akwa asaa, na akwa itoolu, nke a na-ejikarị eme ihe na nkwakọ ngwaahịa aseptic, ihe ọṅụṅụ jelii, ngwaahịa mmiri ara ehi, nkwakọ ngwaahịa azụ̀ na anụ oyi wdg. N'akụkụ nke na-abụghị nri, a na-eji ya eme nkwakọ ngwaahịa ọgwụ, ihe mgbaze na-agbanwe agbanwe na ubi ndị ọzọ, yana ihe mgbochi dị mma, nke na-eme ka ndụ nchekwa nke ngwaahịa ka mma nke ukwuu.
