Raina whakaputa kirihou: Ngā kirihou hangarau polyphenylene ether —–PPO o ngā kirihou hangarau e rima o runga

Polyphenylene ether Ko te (PPO) tētahi o ngā taika e rima o ngā kirihou hangarau whānui. He pai ōna painga o te pakari teitei, te ātete wera teitei, te kore e mura, te kaha teitei me ngā āhuatanga hiko tino pai. Ko te pūmau dielectric me te ngaronga dielectric o te PPO tētahi o ngā mea iti rawa i roto i ngā kirihou hangarau, ā, kāore e pāngia e te pāmahana me te haumākū.
Ko te 2,6-dimethylphenol te hanga polyphenylene ether, he pai rawa te mahi whānui, ko te āhuatanga nui ko te kawenga mō te wā roa, he tino pumau te āhua me te tino pai o te whakamarumaru hiko, he whānui te whakamahinga o te pāmahana, ā, ka taea te whakamahi mō te wā roa i waenga i te -127 ~ 121 ℃. He tino ātete ki te wai me te mamaoa, ā, he kaha teitei te kume, te kaha pānga me te ātete ngoki o ngā hua. Hei tāpiri, he pai te ātete kakahu me ngā āhuatanga hiko.

Te Tukatuka o te PPO

Ko te tukatuka PPO ki te werohanga werohanga, te whakaputanga, te hanga, engari tae atu ki te pahuka, te kirihou pupuhi, te muka karāhe kua whakapakarihia, te whakakikorua hiko, te paninga korehau, te tā, te miihini me te whakarewa hanumi. Ko te PPO ka taea te whakamahi anō, e toru ngā wā ka whakamahia anō, engari kāore i tino heke te mahi. He ngoikore te rere o te PPO rewa, he uaua ki te tukatuka me te hanga, ko te nuinga o ngā tono mahi he PPO kua whakarerekētia.
Koinei te kupu whakataki ki te tukanga whakarewa werohanga PPO.

1. Rauemi tunu PPO
He pūhui kore-kiriata te PPO, he iti rawa te mimiti wai, engari ka puta he hapa i te mata o te hua pēnei i te hiriwa, i ngā mirumiru nā te makuku. Nā reira, ka taea te waiho i te rauemi mata ki roto i te oumu 80 ~ 1°C, ka maroke mō te 1-2 hāora i muri i te whakamahinga.

2. Te kōwhiringa o te mīhini whakakoi werohanga
Mō te PPO rewa, me whakamahi te mīhini hanga werohanga tīwiri, he pai te momo pūwero tika, ko te kōhao he 3-6mm. Ko te rere matua o te pokepokea ai me whakamahi he taper nui ake, he whakamahi rānei i te matau rauemi kukume, he pai te matotoru poto o te sprue.

3. Te pāmahana werohanga
Ko te pāmahana werohanga o te PPO he 270-290°C. Ko te pāmahana whakapūtanga o te PPO he 280-330°C, ā, ko te pāmahana whakapūtanga o te PPO whakarerekētia he 260-285°C. Ko te pāmahana rewa o te PPO he 270-290°C.
He tino teitei te ātete o te PPO ki te wera, ka taea te pirau wera ki te 350 ℃, kāore he āhuatanga pirau wera e kitea ana i roto i te 300 ℃. I te nuinga o te wā, ka whakahaerehia te pāmahana o te oko i te 260-290 ℃, ā, ko te pāmahana o te pūwero he 10 ℃ te iti iho i te pāmahana o te oko.
Nā te matotoru nui o te PPO rewa, me whakamahi i te pāmahana pokepokea teitei ake i te wā e werohia ana te pokepokea. I te nuinga o te wā, ka whakahaerehia te pāmahana pokepokea ki te 100~150℃. Ina iti iho te pāmahana pokepokea i te 100℃, ka ngāwari te whakakī i ngā wāhanga kirihou angiangi ki te kore e ranea me te wehewehe; i te mea he nui ake i te 150℃, ka ngāwari te puta o ngā mirumiru, te waea hiriwa, te piko me ētahi atu hapa.

4. Pēhanga werohanga
Ko te matotoru o te PPO rewa, he tika te tango i te pēhanga teitei i roto i te werohanga whakarewa, he werohanga tere-teitei, kaua e roa rawa te pupuri i te pēhanga me te wā whakamatao. Mā te whakanui ake i te pēhanga werohanga, ka pai te rewa ki te whakakī i te pokepoke, ko te whakahaere pēhanga werohanga whānui ko te 100-140MPa, ko te whakahaere pēhanga pupuri ko te 40-80MPa. Kia rite ki ngā āhuatanga motuhake, me whakarite he whakarerekētanga.

5. Tere werohanga
Me werohanga wawe ngā hua he roa ngā oma, engari i tēnei wā, me whakarite kia nui te hau e puta mai ana i te kiriata.

II Te whakarerekētanga whakaranu o te PPO

He tino pai te mahi a te polyphenylene ether, engari he iti te ātete ki te whakarewa, he ngāwari ngā hua ki te pakaru i te ahotea, he iti te kaha pānga, he utu nui ngā rauemi mata, he nui rawa te matotoru o te rekereke Achilles, he ngoikore te rere, ā, ko te pāmahana whakangawari o te 300 ℃ neke atu rānei, ā, ko te tukatuka i te pāmahana teitei o te 330 ℃ he ngawari ki te pirau, ka hua ake he uaua ki te tukatuka me te nui rawa o te whakapaunga pūngao. Hei whakakore i ēnei ngoikoretanga me te hoatu i ngā āhuatanga hou ki te PPO, kua whakarerekētia i roto i ngā huarahi maha.

1. Whakarerekētanga ranunga PPO me PS
He pūmua kore-āhua te PPO me te PS, ā, he pai te hototahitanga. Mā te whakaranu ki te PS, ka taea te whakaiti i ngā utu tukatuka, ā, ka taea te whakapai ake i te ngāwari o te tukatuka o te PPO, engari ka paku whakaitihia te ātete ki te wera. Koinei te whakatupuranga tuatahi o te koranu polyphenylene ether, nō reira kua whānuitia te whakamahinga o te PPO, hei whakapai ake i te mahi a tēnei momo koranu, kua maha ngā whakapainga a te tangata ki tēnei momo koranu.

2. Te whakarerekētanga o te ranunga PPO me te PA
Mā te whakaranu o ngā mea e rua ka whakapai ake i te mahi tukatuka me te ātete whakarewa o te PPO, engari ka whakapai ake hoki i te ātete wera me te pumau o te PA, ā, ka tutuki ai ngā painga tautoko. Heoi, he tino ngoikore te hototahitanga o ngā mea e rua, nō tētahi pūnaha tino kore hototahi, ā, he nui te wehenga ā-wāhanga o te koura i whakaranua tahitia, ka hua ake he koranu pakarukaru. He nui ngā rangahau a ngā kairangahau mō te kaha, te whakapakeke me te whakapakari i ngā koranu PPO/PA, ā, he maha ngā hua rangahau kua tutuki, ā, kua whakamahia whānuitia ngā koranu PPO/PA.

3. Te whakaranu whakarerekētanga o te PPO me te PBT
Mā te whakaranu o ngā rauemi e rua e whakaoti pai ai te raruraru o te mimiti nui o te wai i roto i te koranu PPO/PA. Kāore e taea e te pakari me te kaha o te koranu PPO/PBT te whakatutuki i ngā whakaritenga o ngā whakamahinga rerekē, pērā i te pūnaha whakaranu PPO/PA, me whakapakari anō hoki.

4. Te whakarerekētanga o te whakaranu PPO me te PPS
I ngā tau tata nei, i roto i ētahi wāhanga hiko me te hiko o te tukanga huihuinga mata, kei te rongonui haere te whakarewa mamaoa me te tikanga VPS mā te whakamahi i te tūhono, nō reira me ātete hoki te kapia e whakamahia ana ki ngā pāmahana teitei ake i te 260 ℃, ko te pāmahana whakawhiti karāhe o te PPO parakore he tata ki te 210 ℃ anake, kāore e taea te whakatutuki i ngā whakaritenga ātete wera teitei, nō reira kei te whanakehia he koranu PPO/PPS ātete wera teitei. Engari me whakanui ake hoki te kaha o te maimoatanga i waenganui i ēnei e rua.

5. Te whakarerekētanga o te ranunga PPO me te PTFE
Ko ngā rauemi e rua e whakaranua ana, he ātete wera PPO, he ātete miihini, he pumau āhuahanga me te ātete kakahu PTFE, he mahi whakahinuhinu, he iti te mimiti wai, he tino tika te mahi hua. Ka taea e ia te whakatutuki i ngā whakaritenga mahi whānui o ngā āhuatanga ā-tinana me ngā āhuatanga whāriki e tata ana ki ngā wāhanga hanganga whakarewa.

5. Te whakarerekētanga o te ranunga PPO me te SBS
He pai te hototahitanga o te PPO me te SBS, ka whakapai ake te koranu PPO/SBS i te mahi piko me te pānga o te PPO, me te iti o te mimiti wai, te pakari pai, te pāmahana piko wera teitei me te tika o ngā āhuatanga, e whakamahia ana i roto i te umanga hiko me te umanga motuka me ētahi atu mara.

III Ngā Whakamahinga o te PPO

1. Te hiko me te hikohiko
E whakamahia whānuitia ana te umanga hiko me te hikohiko i roto i te hanga hononga, ngā takai porowhita, ngā whakangungu wāhanga miihini, ngā pana me ngā whakawhiti, ngā taputapu whakahāngai, ngā whakaaturanga hiko nui, ngā pūnga iahiko taurangi, ngā taputapu pākahiko, ngā hopuoro me ētahi atu wāhanga.

2. Ahumahi waka
He pai mō ngā wāhanga papa taputapu, ngā anga matapihi, ngā mimiti ru, ngā tātari papu, ngā whakakā o te whakamahana, ngā whakakā o te kaikorero, ngā papatohu, ngā pouaka whakakā, ngā pouaka tuku, ngā hononga, ngā taupoki wira, me ētahi atu.

3. Nga taputapu whare
Whakamahia mō ngā pouaka whakaata, ngā rorohiko, ngā kāmera, ngā rīpene ataata, ngā taputapu hopu rīpene, ngā hauhautanga, ngā whakamahana, ngā oumu raihi me ētahi atu wāhanga. Mō ngā mīhini tārua, ngā pūnaha rorohiko, ngā pūreretā, ngā mīhini waea whakaahua me ētahi atu wāhanga me ngā wāhanga o waho.

4. Miihini ahumahi
He pai mō te hanga wāhanga ātete-wera, wāhanga whakamahana, wāhanga ātete-kakahu, wāhanga tuku; te hanga taputapu pāmahana teitei ake, mata pā, takirere me ētahi atu wāhanga, ka taea te whakakapi i te whakamahinga o te kowiri tira; ka taea hoki te hanga mai i ngā tīwiri, ngā here me ngā wāhanga hono.