TE TŪRANGA O TE CPE I NGĀ HANGARAU RĀKAU-KIRIHIKI PVC
Mā te whakamahi i ngā tatau me ngā matapihi kirihou CPE me te PVC kua whakaranua, ka tino pai ake te ngāwari, te pakari me te mahi pāmahana iti, ā, he pai te ātete ki te huarere, te ātete ki te wera me te pumau matū.
Ko ngā rauemi hiato rakau-kirihou PVC he mea hanga nui mai i te kapia PVC me ngā whakakī. Mā te whakaranu ki ngā muka tipu, te whakatikatika i te hangarau tātai, me te whakarerekētanga ranu ā-tinana me te whakarerekētanga CPE (polyethylene chlorinated) (me te pānga piki me te pānga whakarerekētanga), ka taea te whakapai ake i te pakeke, te pakari, te kaha, te ātete wera me te ātete mura o te hua (i roto i te whānuitanga e whakaaetia ana o ngā whakaritenga āhuatanga ā-tinana, ko te teitei ake o te ihirangi chlorine o te CPE, ko te pai ake o te pānga ātete mura), ka whakanui ake i te kaha kume, ka whakapai ake i te pakarukaru me te ātete ngoki o te PVC.
He rerekē rawa te tikanga whakapūtanga o ngā rauemi hiato rakau-kirihou PVC i ērā o ngā rauemi kirihou noa. Nā te mea ko te cellulose te wāhanga matua o te muka tipu, he nui ngā rōpū hydroxyl kei roto i te cellulose, ā, ka hangaia e ēnei rōpū hydroxyl he hononga hauwai i waenga i ngā ngota ngota, ka kaha te polarity me te mimiti wai o ngā muka tipu. I tētahi atu taha, ko te nuinga o ngā rauemi thermoplastic he kore-polar me te hydrophobic, nō reira he tino ngoikore te hototahitanga i waenga i ngā mea e rua, he iti te kaha here i te atanga, ā, he nui te nui o te whakakī o ngā muka tipu, nō reira ka ngoikore te rere me te ngāwari o te tukatuka o te rauemi, ka uaua te pokepoke me te whakapūtanga o te extrusion. Nō reira, he pai te mahi a te whakapai ake i te hanganga o ngā rauemi hiato rakau-kirihou ki te whakapai ake i te tukatuka whakapūtanga me te mahi hua.
I te tīmatanga, i tere te whanaketanga o te CPE hei whakarerekētanga PVC, ā, ko te PVC whakarerekē tonu tētahi o ngā mara tono nui rawa atu o te CPE. He tino pai ngā āhuatanga whakakī o te CPE, ā, he maha ngā momo whakakī ka taea te tāpiri hei whakapai ake i ōna āhuatanga kume, te pēhanga me te whakarerekētanga pumau, me te whakaiti i ngā utu. Ka pai ake hoki te uara whakamahi o te PVC whakarerekē.
I roto i ngā hua pūmanawa me ngā hua PVC mārō kua whakarerekētia e te CPE, ki te whakaritea ki ētahi atu pūmua pērā i te PE me te PP, he tino nui te pānga ātete mura. He maha ngā hua PVC mārō kua whakarerekētia ki te whakarerekētanga CPE me te ihirangi chlorine o te 36%, ā, ko tōna kaha pānga mōrahi ka whiwhihia mā te CPE me ngā ngota chlorine kua tohatoha matapōkeretia ki runga i te mekameka matua polyethylene. Nō reira, ka taea te whakapai ake i tēnei whakarerekētanga i runga i te ngāwari o te tukatuka, te marara, me te kaha pānga.
TE WHAKAMAHINGA O TE CPE KI TE PAPA WHAKAMĀTAO WAEA, TAIA, WHITIKI
Nā te mea kāore he mekameka takirua o te ngota CPE, he pai tōna ātete ki te huarere, he ātete ki te mura, he pai ake te pumau o te wera i te PVC, he iti te utu, ā, he tino pai te mahi. Ka wairewa ki ngā hauwaiwaro kakara me ngā hauwaiwaro halogenated, kāore e wairewa ki ngā hauwaiwaro aliphatic, ka pirau i runga ake i te 170 °C, ā, ka tukuna te hau hauwai pūhaumāota. He hanganga matū pumau, he pai te ātete ki te koroheketanga, he ātete ki te mura, he ātete ki te makariri, he ātete ki te huarere, he kore tae, he ātete ki te ātete matū, he ātete ki te ozone me te whakamarumaru hiko, he pai te hototahi me te ngāwari ki te tukatuka, ka taea te whakaranu ki te PVC, PE, PS me te rapa hei whakapai ake i ōna āhuatanga ā-tinana.
He momo rauemi hanga hou te CPE, he maha ngā āhuatanga pai. He mea whakarerekē pānga pai mō ngā kirihou PVC, ā, he rapa hanga he pai ngā āhuatanga whānui. He whānuitia ngā whakamahinga, ā, kua whakamahia whānuitia ki ngā taura, waea, ngongo, rīpene, rapa me ngā hua kirihou, rauemi hiri, me ngā whitiki kawe ārai-mumura. , kiriuhi ā-wai, kiriata me ngā momo rauemi whakaahua me ētahi atu hua. Ka taea hoki te whakaranu i te CPE ki te polypropylene, te polyethylene pēhanga teitei me te iti, ABS, me ētahi atu hei whakapai ake i te ārai-mumura, te ātete ki te koroheketanga me te mahi tā o ēnei kirihou. Ka taea te kī ko te CPE he copolymer matapōkere o te ethylene, te polyethylene me te 1.2-dichloroethylene. He mātotoru tōna mekameka ngota, ā, ka tohatoha matapōkeretia ngā ngota chlorine polar. Nā ōna āhuatanga ā-tinana me te matū pai rawa atu, he whānuitia te whakamahinga i roto i ngā mīhini me te hiko, matū, rauemi hanga me ngā ahumahi keri. He ātete wera CPE, he ātete ki te ozone me te huarere, he pai ake te ātete ki te koroheketanga i te nuinga o ngā rapa, he pai ake te ātete hinu i te rapa nitrile (ABR), neoprene (CR), he pai ake te ātete ki te koroheketanga i te vinyl chlorosulfonated (CSM); ātete waikawa, alkali, tote me ētahi atu āhuatanga waikura, kore-paitini, ārai mura, kāore he tūponotanga pahū.
TE WHAKAMAHINGA O TE CPE I ROTO I TE WAIMATA
Ka taea te tukatuka i te polyethylene whai chlorine mā te werohanga me te whakaputanga extrusion. Heoi, nā te mea he nui ngā ngota chlorine kei roto i te CPE, me tāpiri he ōwehenga o ngā mea whakaū wera, ngā antioxidants me ngā mea whakaū mārama ki te CPE i mua i te whakaputanga hei tiaki i te pumau o tōna hanganga me te mahi. Kei te wātea hoki ngā CPE iti-chlorine i roto i te whakaputanga hurihuri me te whakaputanga pupuhi.
I tēnei wā, ko te polyethylene chlorinated te nuinga e whakamahia ana hei whakarerekētanga mō te PVC, HDPE me te MBS i roto i te umanga hua kirihou. I muri i te whakaranu i tētahi ōwehenga o te CPE ki roto i te kapia polyvinyl chloride, ka taea te whakaputa ki roto i ngā hua pēnei i ngā paipa, ngā pereti, ngā paninga whakamahana waea, ngā kōtaha, ngā kiriata, ngā kiriata whakaiti, me ētahi atu me ngā taputapu tukatuka PVC whānui; ka taea hoki te whakamahi mō te paninga, te hanga kōpeketanga, me ētahi atu. Kirihou, whakakī, hononga, me ētahi atu; whakamahia hei whakarerekētanga mō te PVC me te PE, ka taea te whakapai ake i te mahi hua, te whakapai ake i te ngāwari, te pakari me te mahi pāmahana iti o te PVC, me te whakaiti i te pāmahana pakaru ki te -40°C; he pai ake hoki te ātete huarere, te ātete wera me te pumau matū i ētahi atu whakarerekētanga; hei whakarerekētanga mō te PE, ka taea e ia te whakapai ake i te kaha tā, te ātete mura me te ngāwari o ana hua, me te whakanui ake i te kiato o te pahuka PE.
He momo rauemi hanga hou te kapia polyethylene chlorine me te maha o ngā āhuatanga tino pai. He mea whakarerekē pānga pai mō ngā kirihou PVC me te rapa hanga me ngā āhuatanga whānui pai. He whānuitia ngā whakamahinga, ā, kua whakamahia whānuitia i roto i ngā taura, waea, ngongo, rīpene, rapa me ngā hua kirihou, rauemi hiri, me ngā whitiki kawe ārai-mumura. , kiriuhi ā-wai, kiriata me ngā momo rauemi kōtaha me ētahi atu hua. Ka taea hoki te whakaranu i te CPE ki te polypropylene, te polyethylene pēhanga teitei me te iti, ABS, me ētahi atu hei whakapai ake i te ārai-mumura, te ātete ki te koroheketanga me te mahi tā o ēnei kirihou. Ka taea te kī ko te CPE he copolymer matapōkere o te ethylene, te polyethylene me te 1.2-dichloroethylene. He kukū tōna mekameka ngota, ā, ka tohatoha matapōkeretia ngā ngota chlorine polar. Nā ōna āhuatanga ā-tinana me te matū pai rawa atu, he whānuitia te whakamahinga i roto i ngā mīhini me te hiko.
ngā ahumahi matū, rauemi hanga me te keri. He ātete wera te CPE, he ātete ki te ozone me te huarere, he pai ake te ātete ki te koroheketanga i te nuinga o ngā rapa, he pai ake te ātete ki te hinu i te rapa nitrile (ABR), neoprene (CR), he pai ake te ātete ki te koroheketanga i te vinyl chlorosulfonated (CSM); he ātete ki te waikawa, he kawakore, he tote me ētahi atu āhuatanga waikura, kāore e paitini, he ātete mura, kāore he tūponotanga pahū.
Te nuinga o te whakamahinga i roto i: te waea me te taura (ngā taura maina waro, ngā waea kua tohua i roto i ngā paerewa UL me VDE), ngā ngongo waipēhi, ngā ngongo motuka, ngā rīpene, ngā pepa rapa, te whakarerekētanga o ngā paipa kōtaha PVC, ngā rauemi aukume, te whakarerekētanga ABS, me ētahi atu.
TE WHAKAMAHINGA O TE CPE I ROTO I TE KIRITA
1. He pai ake te whai hua o ngā kirihou me ngā antioxidants e whakamahia ana i roto i te rapa me te kirihou i roto i te PVC āhua-pakari me te ngohengohe, inā koa i roto i te werohanga werohanga me ngā hua tukatuka tuarua. Whakamahia te CPE hei kirihou PVC, kāore e memeha, kāore e heke, kāore e tangohia, ā, he ātete ki te ozonation me te ātete ki te waikura, he pai te hototahi. I te hanga kiriata, hiako horihori, kapu hu, ngongo, me ētahi atu, ka taea te whakanui ake i te ngawari, te tae tae me te whakaroa i te roa o te ratonga o ngā hua. Ka whakamahia hei hanga i ngā paipa ārai-waikura, waea, pereti, me ngā wāhanga pēhi mō ngā mara hinu, ā, ko tōna utu he 30% ki te 40% te iti iho i ētahi atu PVC kua whakarerekētia. Ka taea te hanga pahuka ātete-mumura me te ātete-matao-ātete mā te whakaranu i te CPE me te PE me te PP, ā, he pai ake tana mahi i te pahuka polyurethane me te polystyrene. Mā te whakamahi i te CPE hei kirihou pumau mō te ABS, AS, PS, me ētahi atu mō te hanga anga taputapu kāinga, raina, wāhanga motuka, taputapu hiko me te hiko, me ngā rīpene ātete-mumura ka taea te whakaiti i ngā utu.
2. Whakamahia i roto i ngā rauemi rapa hiato He rapa hanga motuhake te CPE me te mahi tino pai, he tino pai mō ngā waea me ngā taura he nui ngā whakaritenga mō te ātete wera, te ātete mura me ngā āhuatanga hiko, me ngā whitiki kawe ātete mura teitei. Ka taea hoki te whakamahi mō ngā paipa hinu, te hanga kiriuhi ātete wai me ngā arai taputapu matū, me ētahi atu. He pai ake te rapa whakamomona i hangaia mai i te rauemi turanga rapa CPE i te neoprene e pā ana ki te ātete kakahu, ngā āhuatanga dielectric, te ātete wera, te ātete koroheketanga, te ātete hinu, me ētahi atu. He rite ki te rapa, he iti ake te utu i te rapa neoprene me te nitrile, ā, ka taea te whakamahi i roto i te umanga waea me te taura, ngā wāhanga motuka, ngā ngongo ātete pāmahana me te hinu teitei, ngā ngongo, me ētahi atu. He rite te ātete hau o te CPE ki te rapa chlorinated. Hei tāpiri, he whānuitia te whakamahinga o te CPE i roto i ngā momo hua rapa.
3. He nui te ātete pānga, te ātete mura, te ātete huarere me te ātete pāmahana iti o te ranunga CPE/styrene/acrylonitrile copolymer, ā, ka taea e tōna mara tono te whakataetae ki te ABS. He nui te kaha pānga, te mārama me te pumau o te huarere o te copolymer CPE/styrene/methacrylic acid. Mā te whakaranu i te CPE me te NBR ka taea te whakapai ake i ngā āhuatanga whānui o te NBR, ā, ka taea te whakamahi hei hanga ngongo rapa ātete-hinu. Ka taea te whakamahi tahi i te CPE me te SBR hei hanga ngongo rapa me ngā kiriuhi ātete wai; ina whakamahia tahitia me te rapa whānui, ka taea te whakamahi hei hua rapa pēnei i te kakahu ua, ngā potae pahikara tae, ngā paipa hau ātete-mura, me ngā taura. I Hapani, ko te nuinga o te CPE ka whakaranua ki ngā rauemi rapa me te kirihou hei whakapai ake i te mahi tukatuka, te āhua o te hua me te kounga o roto. I te pikinga ake o te putanga CPE me te whakapainga o te hangarau tukatuka, ka taea hoki te whakaputa i ngā ranunga CPE/EVA, he pai te pumau o te taha, ā, ka whakamahia hei hanga pereti e tiakina ana i ngā pāmahana iti. E whakamahia ana te styrene CPE/chlorinated i roto i te hanga i ngā ārai hiko, ngā pahuka ātete mura, ngā paninga, me ētahi atu.
4. Ka taea te hanga i te CPE mō ngā paninga motuhake me ngā kiriuhi ā-wai hei paninga motuhake, pērā i ngā paninga ārai-waikura, ngā paninga ārai-para, ngā paninga ārai-waikura, me ētahi atu, hei whakakapi i ētahi atu paninga. Ka whakaranua te CPE/PVC hei hanga kiriuhi ā-waikura, he rauemi ā-waikura taumata waenga. Ko tōna ātete ki te huarere, te ātete ki te ozone, me te ātete mura he rite ki ērā o ngā kiriuhi rapa ethylene-propylene kounga teitei, ā, he iti te utu me te pai o te mahi hanga. Mā te whakarewa i te CPE ki roto i ngā whakarewa noa ka taea te hanga paninga ārai-waikura. I muri i te whakaranu i te CPE me te uku, me ētahi atu, ka whakamahia pinepinetia hei hanga paninga ārai-waikura mō te tuanui me te mahi pai ake.
5. Polyethylene nui-hauora Ko te nui o te hauora o te polyethylene nui-hauora he 61% ki te 75%. He hua mārō, ātete wera, kaha-teitei, he rite ki te karāhe, ā, he rauemi hanga kiriata me ngā āhuatanga tino pai. Ka taea te whakaranu ki te peita alkyd, te kapia epoxy, te phenolic, te polyester kore-mākū, te polyacrylate, me ētahi atu hei hanga paninga ārai-waikura me te pumau matū pai. Ko tōna ātete mura, te ātete waikura, te ātete huarere, me te ngāwari katoa he pai ake i te rapa hauora. He whakakapinga mō te rapa hauora. He pai ngā āhuatanga piri o te polyethylene nui-hauora ki te whakarewa me te raima, nō reira he pānga tiaki whai hua ki ēnei rauemi. He pai te whakauru o te polyethylene nui-hauora ki ngā tae kore-waro me ngā tae waro, ā, ka taea te whakamahi hei hanga paninga ārai-mura.
6. Ētahi atu whakamahinga Mā te tāpiri i te CPE ki te hinu wahie ka taea te whakaiti i tōna pae tio, ā, mā ngā tāpiringa mō te hinu taputapu ka taea te whakapai ake i te ātete o te hinu ki te pēhanga. Mā te tāpiri i te CPE ki te hinu tapahi me te hinu keri ka taea te whakapai ake i te roa o te mahi a ngā taputapu. Hei tāpiri, ka whakamahia hoki te CPE i roto i ngā whakangawari hiako me ngā whakamātotoru o ngā waituhi tā, me ētahi atu, ā, kei te whānui haere tonu te whānuitanga o tana whakamahinga.
HE AHA TE TŪRANGA O TE TĀPIRI I TE CPE KI TE HANGA KIRIHIKI?
Ko te polyethylene chlorinated (CPE) he rauemi polymer kua kī, he paura ma te āhua, kāore he paitini, kāore hoki he reka, he ātete pai ki te huarere, he ātete ki te ozone, he ātete matū me te ātete ki te koroheketanga, ā, he ātete hinu pai, he ātete mura me te mahi tae pai. He pakari pai (he ngāwari tonu i te -30°C), he hototahi pai ki ētahi atu rauemi polymer, he pāmahana pirau teitei, he pirau hei whakaputa HCl, ka taea e te HCL te whakatere i te tauhohenga tango chlorination o te CPE. Ko te polyethylene chlorinated he rauemi polymer i hangaia mai i te polyethylene matotoru-teitei (HDPE) mā te tauhohenga whakakapinga chlorination. E ai ki ngā hanganga me ngā whakamahinga rerekē, ka taea te wehewehe i te polyethylene chlorinated ki te momo kapia polyethylene chlorinated (CPE) me te momo elastomer polyethylene chlorinated (CM). Haunga te whakamahi takitahi, ka taea hoki te whakaranu i ngā kapia thermoplastic ki te polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polystyrene (PS), ABS me te polyurethane (PU). I roto i te umanga rapa, ka taea te whakamahi i te CPE hei rapa motuhake kounga teitei, ā, ka taea hoki te whakamahi me te rapa ethylene-propylene (EPR), te rapa butyl (IIR), te rapa nitrile (NBR), te polyethylene chlorosulfonated (CSM), me ētahi atu. Ka whakamahia ētahi atu ranunga rapa.
