Ko te ABS, e mōhiotia whānuitia ana ko te acrylonitrile butadiene styrene, ka hangaia mā te whakakotahitanga o ngā monomer e toru o te acrylonitrile-butadiene-styrene. Nā te rerekētanga o ngā ōwehenga o ngā monomer e toru, ka rerekē pea ngā āhuatanga me te pāmahana rewa, te mahi nekenekehanga o te ABS, te whakaranu ki ētahi atu kirihou, tāpiringa rānei, ka taea te whakawhānui ake i te whakamahinga me te mahi a te ABS.
Kei waenganui i te PS me te PC te rere o te ABS, ā, e pā ana tōna rere ki te pāmahana me te pēhanga werohanga, ā, he paku nui ake te awe o te pēhanga werohanga. Nō reira, he maha ngā wā ka whakamahia te pēhanga werohanga teitei ake i roto i te hanga hei whakaiti i te matotoru rewa me te whakapai ake i te mahi whakakī o te hanga.
1. Te tukatuka kirihou
Ko te tere mimiti wai o te ABS he tata ki te 0.2%-0.8%. Mō te ABS whānui, me tunu ki roto i te oumu i te 80-85°C mō ngā hāora 2-4, i roto rānei i te oko whakamaroke i te 80°C mō ngā hāora 1-2 i mua i te tukatuka. Mō ngā wāhanga PC kei roto te ABS ātete wera, me whakanui ake te pāmahana whakamaroke ki te 100°C, ā, ka taea te whakatau i te wā whakamaroke motuhake mā te whakaputa hau.
Kāore e taea te neke ake i te 30% te ōwehenga o ngā rauemi hangarua, ā, kāore e taea e te ABS papa hiko te whakamahi i ngā rauemi hangarua.
2. Te kōwhiringa o te mīhini whakakoi werohanga
Ka taea te whiriwhiri i te mīhini whakarewa werohanga paerewa a Ramada (te ōwehenga roa-ki-te-diameter o te tīwiri 20:1, te ōwehenga kōpeketanga nui atu i te 2, te pēhanga werohanga nui atu i te 1500bar). Mena ka whakamahia te masterbatch tae, he teitei rānei te āhua o te hua, ka taea te whiriwhiri i tētahi tīwiri he iti ake te diameter. Ka whakatauhia te kaha piri i runga i te 4700-6200t/m2, e whakawhirinaki ana ki te kounga kirihou me ngā whakaritenga hua.
3. Te hoahoa pokepokea ai me te kuaha
Ka taea te whakatakoto i te pāmahana o te pokepokea ai ki te 60-65°C. Ko te whānui o te oma he 6-8mm. Ko te whānui o te kēti he tata ki te 3mm, ko te matotoru he rite ki te matotoru o te hua, ā, ko te roa o te kēti me iti iho i te 1mm. Ko te whānui o te kōhao hau he 4-6mm, ā, ko te matotoru he 0.025-0.05mm.
4. Te pāmahana rewa
Ka taea te whakatau tika mā te tikanga werohanga hau. He rerekē te pāmahana rewa o ngā momo rerekē, ko ngā tautuhinga kua tūtohutia koia ēnei:
Te taumata pānga: 220°C-260°C, pai ake 250°C
Te taumata whakakikorua hiko: 250°C-275°C, ko te 270°C te pai ake
Te ātete wera: 240°C-280°C, ko te pai ake ko te 265°C-270°C
Te ātete mura: 200°C-240°C, pai ake 220°C-230°C
Te mātotoru o te tae: 230°C-260°C, ko te pai ko te 245°C
Te muka karāhe kua whakapakarihia: 230℃-270℃
Mō ngā hua he nui rawa ngā whakaritenga mō te mata, whakamahia he pāmahana rewa teitei ake me te pāmahana pokepokea ai.
5. Tere werohanga
Ka whakamahia te tere puhoi mō te ātete ahi, ā, ka whakamahia te tere tere mō te ātete wera. Mena he teitei ngā whakaritenga mata o te hua, me whakamahi te whakahaere tere werohanga whakarewa tere-teitei me te maha-wāhanga.
6. Pēhanga whakamuri
I te nuinga o te wā, ko te iti o te pēhanga whakamuri, ko te pai ake. Ko te pēhanga whakamuri e whakamahia whānuitia ana ko te 5bar, ā, me nui ake te pēhanga whakamuri o te rauemi tae kia ōrite ai te ranunga tae.
7. Te wā noho
I te pāmahana o te 265°C, kaua e neke atu i te 5-6 meneti te roa o te noho o te ABS i roto i te rango rewa. He poto ake te wā ārai mura. Mena me whakamutu te mīhini, me whakaheke tuatahi te pāmahana kua whakaritea ki te 100°C, kātahi ka horoia te rango kirihou rewa ki te ABS whānui. Me whakanoho te ranunga kua horoia ki roto i te wai matao hei ārai i te pirau anō. Mena me huri koe mai i ētahi atu kirihou ki te ABS, me horoi tuatahi e koe te rango kirihou rewa ki te PS, PMMA, PE rānei. Kāore he raruraru o ētahi hua ABS ina tukuna noa mai i te pokepokea ai, engari ka huri te tae i muri i tētahi wā, ka puta pea tēnei i te wera nui, i te noho roa rānei o te kirihou i roto i te rango rewa.
8. Te tukatuka i muri i ngā hua
Ko te tikanga, kāore e hiahiatia he tukatuka muri mō ngā hua ABS, ko ngā hua papa hiko anake me tunu (70-80°C, 2-4 hāora) kia kore ai e pāngia ngā tohu mata, ā, ko ngā hua e hiahia ana kia pania ki te hiko kāore e taea te whakamahi i tētahi kaihoko tuku, ā, me tākai tonu ngā hua i muri i te tangohanga.
9. Ngā mea e tika ana kia aro nui atu i te wā e hangaia ana
He maha ngā momo ABS (ina koa ko te momo ātete mura), ko te mea rewa ka piri kaha ki te mata o te tīwiri i muri i te whakakirikiritanga, ā, ka pirau i muri i te wā roa. Mēnā ka puta te āhuatanga i runga ake nei, me tango te wāhanga whakakoi tīwiri me te pūwero hei muru, ā, me horoi tonu te tīwiri ki te PS, me ētahi atu.
Wā tuku: Akuhata-09-2023
