ABS, inowanzozivikanwa se acrylonitrile butadiene styrene, inoumbwa nekukopolymerization kwemamonomers matatu e acrylonitrile-butadiene-styrene. Nekuda kwehuwandu hwakasiyana hwemamonomers matatu, panogona kuve nemhando dzakasiyana uye tembiricha yekunyungudika, kufamba kweABS, kusanganisa nemamwe mapurasitiki kana additives, inogona kuwedzera kushandiswa nekuita kweABS.
Iyo fluidity yeABS iri pakati pePS nePC, uye fluidity yayo inoenderana nejekiseni tembiricha uye kudzvanywa, uye pesvedzero yekumanikidza jekiseni yakakura zvishoma. Naizvozvo, yakakwira jekiseni kudzvanywa inowanzo shandiswa mukuumba kudzikisa kunyungudika viscosity uye kunatsiridza mold kuzadza. performance.
1. Plastic processing
Kutora mvura kweABS kunenge 0.2% -0.8%. Kune general-grade ABS, inofanira kubikwa muchoto pa80-85 ° C kwemaawa 2-4 kana muhopi yekuomesera pa80 ° C kwemaawa 1-2 isati yagadzirwa. Kune ABS inodzivirira kupisa ine zvikamu zvePC, tembiricha yekuomesa inofanirwa kuwedzerwa kusvika ku100 ° C, uye iyo chaiyo yekuomesa nguva inogona kutsanangurwa nemhepo extrusion.
Chiyero chezvigadzirwa zvakadzokororwa hazvigone kudarika 30%, uye electroplating giredhi ABS haigone kushandisa zvakadzokororwa zvinhu.
2. Kusarudzwa kwejekiseni molding machine
Ramada's standard jekiseni rekugadzira jekiseni rinogona kusarudzwa (screw kureba-kusvika-dhayamita reshiyo 20: 1, compression reshiyo yakakura kupfuura 2, jekiseni pressure yakakura kupfuura 1500bar). Kana iyo masterbatch yemuvara yakashandiswa kana kutaridzika kwechigadzirwa kwakakwira, screw ine dhayamita diki inogona kusarudzwa. Iyo clamping simba inotemerwa zvinoenderana ne4700-6200t/m2, zvinoenderana negiredhi repurasitiki uye zvigadzirwa zvinodiwa.
3. Mold uye gedhi kugadzira
Kupisa kwe mold kunogona kuiswa pa 60-65 ° C. Mumhanyi dhayamita 6-8mm. Kufara kwegedhi kunenge 3mm, ukobvu hwakafanana nehwechigadzirwa, uye kureba kwegedhi kunofanira kunge kuri pasi pe1mm. Gomba remhepo rakafara 4-6mm uye gobvu 0.025-0.05mm.
4. Nyunguduka tembiricha
Inogona kunyatsogadziriswa nemhepo jekiseni nzira. Magiredhi akasiyana ane tembiricha yekunyungudika kwakasiyana, marongero anokurudzirwa ndeaya anotevera:
Impact giredhi: 220°C-260°C, zvichida 250°C
Electroplating giredhi: 250°C-275°C, zviri nani 270°C
Giredhi rinodzivirira kupisa: 240°C-280°C, zvichida 265°C-270°C
giredhi rinodzoreredza moto: 200°C-240°C, zvichida 220°C-230°C
Transparent giredhi: 230°C-260°C, zvichida 245°C
Girazi faibha yakasimbisa giredhi: 230 ℃-270 ℃
Kune zvigadzirwa zvine yakakwira pamusoro pezvinodiwa, shandisa yakanyanya kunyunguduka tembiricha uye mold tembiricha.
5. Kumhanya kwejekiseni
Slow speed inoshandiswa kugiredhi rinodzivirirwa nemoto, uye kukurumidza kukurumidza kunoshandiswa kugiredhi rinodzivirira kupisa. Kana izvo zvinodikanwa zvepasi zvechigadzirwa zvakakwirira, yakakwirira-kumhanya uye yakawanda-nhanho jekiseni rekugadzira jekiseni rekukurumidza kutonga rinofanira kushandiswa.
6. Back pressure
Muzhinji, iyo yakaderera kumashure kumashure, zviri nani. Iyo inowanzo shandiswa yekudzosera kumashure ndeye 5bar, uye iyo yekudhaya inoda yakakwira kumashure kudzvanywa kuita kuti ruvara rusanganise.
7. Nguva yekugara
Pakupisa kwe 265 ° C, nguva yekugara yeABS musimbi yakanyunguduka haifaniri kudarika 5-6 maminitsi zvakanyanya. Nguva yekudzora murazvo ipfupi. Kana zvakakosha kumisa muchina, tembiricha yakatarwa inofanira kudzikiswa kusvika ku100 ° C kutanga, uye ipapo silinda yepurasitiki yakanyungudutswa inofanira kucheneswa neyakajairwa-chinangwa ABS. Musanganiswa wakacheneswa unofanirwa kuiswa mumvura inotonhora kudzivirira kuwedzera kuora. Kana iwe uchida kuchinja kubva kune mamwe mapurasitiki kuenda kuABS, unofanira kutanga wachenesa silinda yepurasitiki yakanyunguduka nePS, PMMA kana PE. Mimwe michina yeABS haina dambudziko kana ichangoburitswa muforoma, asi ichachinja ruvara mushure menguva yakati rebei, izvo zvinogona kukonzerwa nekupisa kana purasitiki inogara muhumburumbira yakanyungudika kwenguva yakareba.
8. Mushure mekugadzirisa zvigadzirwa
Kazhinji, zvigadzirwa zveABS hazvidi post-processing, chete electroplating giredhi zvigadzirwa zvinoda kubikwa (70-80 ° C, 2-4 maawa) kupfuudza mamaki epamusoro, uye zvigadzirwa zvinoda kugezwa nemagetsi hazvigone kushandisa chinoburitsa. , uye zvigadzirwa zvinofanirwa kurongedzerwa pakarepo mushure mekunge zvaburitswa.
9. Nyaya dzinoda kutariswa zvakanyanya pakuumba
Kune akati wandei magiredhi eABS (kunyanya iyo murazvo wegiredhi retardant), iyo yakanyunguduka ine yakasimba yekunamatira pamusoro peiyo screw mushure mepurasitiki, uye inozoora mushure menguva refu. Kana mamiriro ari pamusoro aitika, zvinodikanwa kuburitsa screw homogenization chikamu uye compressor yekupukuta, uye kugara uchichenesa screw nePS, nezvimwe.
Nguva yekutumira: Aug-09-2023