- AS
1. Te mahi AS
He copolymer propylene-styrene te AS, e kiia ana ko SAN, me te mātotoru o te 1.07g/cm3. Kāore e ngāwari ki te pakaru ā-roto. He mārama ake, he pāmahana whakangawari ake, he kaha pānga teitei ake i te PS, ā, he ngoikore ake te ātete ki te ngenge.
2. Te Whakamahinga o te AS
Ngā paepae, ngā kapu, ngā taputapu kai, ngā wāhanga pouaka whakamātao, ngā porotiti, ngā taputapu rama, ngā whakapaipai, ngā whakaata taputapu, ngā pouaka takai, ngā pepa tuhituhi, ngā rama hau, ngā kakau paraihe niho, me ētahi atu.
3. Ngā tikanga tukatuka AS
Ko te pāmahana tukatuka o te AS he 210~250℃ te tikanga. He ngāwari te mimiti i te makuku o tēnei rauemi, ā, me whakamaroke mō te neke atu i te kotahi hāora i mua i te tukatuka. He iti ake te kino o tōna rere i te PS, nō reira he paku teitei ake te pēhanga werohanga, ā, he pai ake te whakahaere i te pāmahana pokepokea ki te 45~75℃.
- ABS
1. Mahi ABS
Ko te ABS he acrylonitrile-butadiene-styrene terpolymer. He polymer amorphous tēnei, he tata ki te 1.05g/cm3 te matotoru. He kaha miihini teitei, ā, he pai ngā āhuatanga whānui o te "poutū, te pakari, me te maitai". He kirihou hangarau whānui te ABS, he maha ngā momo me ngā whakamahinga whānui. Ka kiia hoki ko te "kirihou hangarau whānui" (ko te MBS te ABS mārama). He ngāwari ki te hanga me te tukatuka, he iti te ātete matū, ā, he ngāwari ki te whakakikoruatia ngā hua ki te hiko.
2. Te Whakamahinga o te ABS
Ngā impeller papu, ngā peera, ngā kakau, ngā paipa, ngā anga taputapu hiko, ngā wāhanga hua hiko, ngā taonga takaro, ngā pouaka wati, ngā pouaka taputapu, ngā anga tāke wai, ngā anga rokiroki matao me ngā anga pouaka whakamātao.
3. Ngā āhuatanga o te tukanga ABS
(1) He tino pai te waiora o te ABS, ā, he iti te ātete ki te pāmahana. Me whakamaroke katoa, me whakamahana anō hoki i mua i te whakahāngai me te tukatuka kia kore ai e neke ake i te 0.03% te makuku.
(2) Kāore i te tino pāngia te matotoru rewa o te kapia ABS e te pāmahana (he rerekē i ētahi atu kapia kore-āhua). Ahakoa he paku teitei ake te pāmahana werohanga o te ABS i tērā o te PS, kāore he awhe piki pāmahana ngoikore pērā i te PS, ā, kāore e taea te whakamahi i te whakamahana matapo. Hei whakaiti i tōna matotoru, ka taea e koe te whakanui ake i te tere o te tīwiri, te whakanui ake rānei i te pēhanga/tere werohanga hei whakapai ake i tōna rere. Ko te pāmahana tukatuka whānui ko te 190~235℃.
(3) He reo te matotoru rewa o te ABS, he teitei ake i te PS, HIPS, me te AS, ā, he ngoikore ake tōna rere, nō reira me teitei ake te pēhanga werohanga.
(4) He pai te pānga o te ABS ki ngā tere werohanga reo-waenga (ki te kore ngā āhua uaua me ngā wāhanga angiangi e hiahia ana ki ngā tere werohanga teitei ake), ka ngāwari te pupuhi o te hua ki ngā tohu hau.
(5) He tino teitei te pāmahana o te hanga ABS, ā, ko te pāmahana o te hanga ka taea te whakarite i waenga i te 45 me te 80°C. I te whakaputa hua nui ake, ko te pāmahana o te hanga pumau (hanga mua) he 5°C teitei ake i te hanga neke (hanga muri).
(6) Kaua te ABS e noho roa i roto i te oko pāmahana teitei (me iti iho i te 30 meneti), ki te kore ka pirau wawe, ka huri kowhai.
- PMMA
1. Te Mahi a te PMMA
He pūmua kore-āhua te PMMA, e mōhiotia whānuitia ana ko te plexiglass (sub-acrylic), ā, ko tōna matotoru he 1.18g/cm3. He tino mārama, ā, ko te whakawhiti mārama he 92%. He rauemi whatu pai; he ātete wera pai (ātete wera). Ko te pāmahana whakarerekētanga he 98°C). He kaha ā-mīhini waenga tōna hua, ā, he iti te pakeke o te mata. Ka ngawari te rakuraku e ngā mea pakeke, ā, ka waiho he tohu. Ki te whakatauritea ki te PS, ehara i te mea ngawari ki te pakarukaru.
2. Te Whakamahinga o te PMMA
Ngā karāhe taputapu, ngā hua whatu, ngā taputapu hiko, ngā taputapu hauora, ngā tauira mārama, ngā whakapaipai, ngā karāhe rā, ngā niho rūpahu, ngā papa pānuitanga, ngā panera karaka, ngā rama hiku o te motuka, ngā matapihi matapihi, me ētahi atu.
3. Ngā āhuatanga tukanga o te PMMA
He tino pakari ngā whakaritenga tukatuka o te PMMA. He tino pāngia e te makuku me te pāmahana. Me tino whakamaroke i mua i te tukatuka. He tino teitei tōna matotoru rewa, nō reira me pokepokea ki te pāmahana teitei ake (219~240℃) me te pēhanga. He pai ake te pāmahana pokepokea i waenga i te 65~80℃. Kāore i te tino pai te pumau wera o te PMMA. Ka pakaru i te pāmahana teitei, i te noho roa rānei i te pāmahana teitei. Kaua te tere o te tīwiri e tino teitei (tata ki te 60rpm), nā te mea he ngawari ki te puta i roto i ngā wāhanga PMMA matotoru. Ko te āhuatanga "korekore" me whai kuaha nui me ngā tikanga werohanga "mahana rauemi teitei, pāmahana pokepokea teitei, tere puhoi" hei tukatuka.
4. He aha te kiriaku (PMMA)?
He kirihou mārō, mārama te kiriaku (PMMA) e whakamahia ana hei whakakapi mō te karāhe i roto i ngā hua pēnei i ngā matapihi ātete-pakaru, ngā tohu rama, ngā matapihi tuanui me ngā tuanui waka rererangi. Nō te whānau nui o ngā kapia kiriaku te PMMA. Ko te ingoa matū o te kiriaku ko te polymethyl methacrylate (PMMA), he kapia hangai i whakapūhuitia mai i te methyl methacrylate.
Ko te Polymethylmethacrylate (PMMA) e mōhiotia ana ko te kiriaku, te karāhe kiriaku, ā, e wātea ana i raro i ngā ingoa hokohoko me ngā waitohu pēnei i a Crylux, Plexiglas, Acrylite, Perclax, Astariglas, Lucite, me Perspex, me ētahi atu. He maha ngā wā ka whakamahia te Polymethylmethacrylate (PMMA) i roto i te āhua pepa hei whakakapi mō te karāhe māmā, ātete rānei ki te pakaru. Ka whakamahia hoki te PMMA hei kapia whakarewa, hei waituhi, hei paninga hoki. Ko te PMMA he wāhanga o te rōpū rauemi kirihou hangarau.
5. Me pēhea te hanga i te kiriaku?
Ka hangaia te polymethyl methacrylate mā te polymerization nā te mea ko tētahi o ngā polymer hangai. Tuatahi, ka whakanohoia te methyl methacrylate ki roto i te pokepokea ai, ā, ka tāpirihia he whakakorikori hei tere ake i te tukanga. Nā tēnei tukanga polymerization, ka taea te hanga i te PMMA ki ngā momo āhua rerekē pērā i ngā rau, ngā kapia, ngā poraka, me ngā pīrere. Ka taea hoki e te kāpia kiriaku te āwhina ki te whakangawari i ngā wahi PMMA me te whakapiri i a rātou.
He ngāwari te whakahaere i te PMMA i ngā huarahi rerekē. Ka taea te hono atu ki ētahi atu rauemi hei whakapai ake i ōna āhuatanga. Mā te hanga wera, ka ngāwari ina werahia, ā, ka totoka ina whakamataohia. Ka taea te whakarite i te rahi tika mā te whakamahi i te kani, i te tapahi laser rānei. Ki te orohia, ka taea e koe te tango i ngā karawarawa mai i te mata, ā, ka āwhina ki te pupuri i tōna āhua tūturu.
6. He aha ngā momo kiriaku rerekē?
Ko ngā momo matua e rua o te kirihou kiriaku ko te kiriaku whakarewa me te kiriaku whakapūtā. He nui ake te utu o te hanga kiriaku whakarewa engari he kaha ake, he roa, he mārama ake, he whānuitanga hanga wera me te pumau ake i te kiriaku whakapūtā. He tino pai te ātete matū me te roa o te kiriaku whakarewa, ā, he ngāwari ki te tae me te hanga i te wā o te tukanga hanga. Kei te wātea hoki te kiriaku whakarewa i roto i ngā momo matotoru. He iti ake te utu o te kiriaku whakapūtā i te kiriaku whakarewa, ā, he pai ake te mahi, he pumau ake te kiriaku i te kiriaku whakarewa (engari he iti ake te kaha). He ngāwari te tukatuka me te mīhini i te kiriaku whakapūtā, ā, he pai rawa atu hei whakakapi i ngā rau karāhe i roto i ngā tono.
7. He aha i whakamahia whānuitia ai te kiriaku?
He maha ngā wā ka whakamahia te kiriaku nā te mea he rite tonu ōna āhuatanga pai ki te karāhe, engari kāore he raruraru pakarukaru. He tino pai ngā āhuatanga whatu o te karāhe kiriaku, ā, he rite tonu te taupū whakaata ki te karāhe i roto i te āhua totoka. Nā ōna āhuatanga ātete pakaru, ka taea e ngā kaihoahoa te whakamahi i ngā kiriaku ki ngā wāhi ka tino morearea te karāhe, ka pakaru rānei (pērā i ngā periscope ruku wai, ngā matapihi rererangi, me ētahi atu). Hei tauira, ko te momo karāhe ātete matā tino noa ko te wahi kiriaku 1/4-inihi te matotoru, e kiia nei ko te kiriaku totoka. He pai hoki te mahi a te kiriaku i roto i te hanga werohanga, ā, ka taea te hanga ki te nuinga o ngā āhua ka taea e te kaihanga pokepoke te hanga. Ko te kaha o te karāhe kiriaku me tōna ngāwari ki te tukatuka me te miihini he mea pai rawa atu, e whakamārama ana i te take e whakamahia whānuitia ana i roto i ngā ahumahi kaihoko me te arumoni.
Wā tuku: Hakihea-13-2023
