Ibikoresho bya PMMA bizwi cyane nka plexiglass, acrylic, nibindi. Izina ryimiti ni polymethyl methacrylate. PMMA ni ibikoresho bidafite uburozi kandi byangiza ibidukikije. Ikintu kinini kiranga ni mucyo mwinshi, hamwe no kohereza urumuri rwa 92%. Imwe ifite urumuri rwiza, itumanaho rya UV naryo rigera kuri 75%, kandi ibikoresho bya PMMA nabyo bifite imiti ihamye kandi irwanya ikirere.
PMMA ibikoresho bya acrylic bikoreshwa kenshi nkimpapuro za acrylic, pelletike ya acrilike, agasanduku k'urumuri rwa acrylic, ubwogero bwa acrylic, nibindi. kontineri), porogaramu zikoreshwa munganda (disiki ya videwo, diffuzeri yumucyo)), buto yibicuruzwa bya elegitoronike (cyane cyane mucyo), ibicuruzwa byabaguzi (ibikombe byokunywa, ububiko, nibindi).
Amazi yibikoresho bya PMMA ni bibi kurenza ibya PS na ABS, kandi ubwiza bwashonga bwumva neza impinduka zubushyuhe. Muburyo bwo kubumba, ubushyuhe bwinshinge bukoreshwa cyane cyane muguhindura ibishishwa. PMMA ni polymer amorphous ifite ubushyuhe burenze 160 ℃ nubushyuhe bwa 270 ℃. Uburyo bwo kubumba ibikoresho bya PMMA birimo casting,gushushanya inshinge, gutunganya, thermoforming, nibindi
1. Kuvura plastiki
PMMA ifite amazi runaka, kandi igipimo cyayo cyo kwinjiza ni 0.3-0.4%, naho ubushyuhe bwo gutera inshinge bugomba kuba munsi ya 0.1%, mubisanzwe 0.04%. Kubaho kwamazi bituma gushonga kugaragara nkibibyimba, imirongo ya gaze, no kugabanya gukorera mu mucyo. Igomba rero gukama. Ubushyuhe bwo kumisha ni 80-90 ℃, kandi igihe kirenze amasaha 3.
Rimwe na rimwe, 100% y'ibikoresho byakoreshejwe birashobora gukoreshwa. Umubare nyawo uterwa nibisabwa ubuziranenge. Mubisanzwe, irashobora kurenga 30%. Ibikoresho bisubirwamo bigomba kwirinda kwanduzwa, bitabaye ibyo bizagira ingaruka kumiterere nibiranga ibicuruzwa byarangiye.
2. Guhitamo imashini ibumba inshinge
PMMA ntabwo isabwa bidasanzwe kumashini ibumba inshinge. Kubera ubwinshi bwayo bwashonze, hasabwa umwobo wimbitse hamwe nu mwobo munini wa diameter nozzle. Niba imbaraga zibicuruzwa zisabwa kuba ndende, umugozi ufite igipimo kinini kinini ugomba gukoreshwa kugirango plastike yubushyuhe buke. Byongeye, PMMA igomba kubikwa muri hopper yumye.
3. Igishushanyo mbonera n'irembo
Ubushyuhe bwa-ken burashobora kuba 60 ℃ -80 ℃. Diameter ya soko igomba guhuza icyuma cyimbere. Inguni nziza ni 5 ° kugeza 7 °. Niba ushaka gutera 4mm cyangwa ibicuruzwa byinshi, inguni igomba kuba 7 °, na diametre yisoko igomba kuba 8 °. Kuri 10mm, uburebure rusange bwirembo ntibugomba kurenga 50mm. Kubicuruzwa bifite uburebure bwurukuta ruri munsi ya 4mm, diameter yiruka igomba kuba 6-8mm, naho kubicuruzwa bifite uburebure bwurukuta burenze 4mm, diameter yiruka igomba kuba 8-12mm.
Ubujyakuzimu bw'amarembo ya diagonal, ameze nk'abafana kandi afite verticale igomba kuba 0.7 kugeza 0.9t (t ni uburebure bw'urukuta rw'ibicuruzwa), naho diameter y'irembo ry'urushinge igomba kuba 0.8 kugeza 2mm; kubwiza buke, hagomba gukoreshwa ubunini buto. Imyobo isanzwe ni 0.05 kugeza 0.07mm z'uburebure na 6mm z'ubugari.Ahantu hahanamye ni hagati ya 30′-1 ° na 35′-1 ° 30 ° mugice cyurwobo.
4. Gushonga ubushyuhe
Irashobora gupimwa nuburyo bwo gutera ikirere: kuva kuri 210 ℃ kugeza 270 ℃, bitewe namakuru yatanzwe nuwabitanze.
5. Ubushyuhe bwo gutera inshinge
Gutera inshinge byihuse birashobora gukoreshwa, ariko kugirango wirinde guhangayika cyane imbere, hagomba gukoreshwa inshinge nyinshi, nka buhoro-bwihuta-buhoro, nibindi. Iyo utera ibice byimbitse, koresha umuvuduko mwinshi.
6. Igihe cyo gutura
Niba ubushyuhe ari 260 ℃, igihe cyo gutura ntigomba kurenza iminota 10, kandi niba ubushyuhe ari 270 ℃, igihe cyo gutura ntigomba kurenza iminota 8.
Igihe cyo kohereza: Gicurasi-25-2022
