Rerekētanga Matua–UHMW me HDPE
He rite te āhua o ngā pūmua kirihou wera o te UHMW me te HDPE. Ko te rerekētanga matua i waenga i te UHMW me te HDPE ko ngā mekameka pūmua roa kei roto i te UHMW he tino teitei ngā taumaha ngota, engari he teitei te ōwehenga kaha-ki-te-mātotoru o te HDPE.
Ko te UHMW he tohu mō te Ultra High Molecular Weight polyethylene. Ko te UHMWPE anō hoki te tohu mō tēnei tohu. Ko te HDPE he tohu mō te High Density Polyethylene.
He aha te UHMW?
Ko te UHMW he polyethylene taumaha-rahi rawa. He momo pūmua kirihou wera. Kei roto i tēnei pūhui pūmua he mekameka pūmua tino roa me ngā taumaha ngota teitei (tata ki te 5-9 miriona amu). Nō reira, ko te UHMW te mea tino matotoru. Heoi, kāore e taea te wehewehe i te āhua o tēnei pūhui mai i te HDPE.
Ngā Āhuatanga o te UHMW
Ko ngā āhuatanga nui o te UHMW koia ēnei:
He rauemi pakari.
He kaha pānga teitei
Kore kakara, kore reka
Te kaha reti teitei
Ātete pakaru
He tino kore-piripiri
Kāore he paitini o te matū nei, ā, he haumaru hoki.
Kāore e mimiti i te wai.
He roa rawa ngā mekameka pūmua katoa i roto i te UHMW, ā, he rite tonu te ahunga e tūhono ana. Ka herea ia mekameka pūmua ki ētahi atu mekameka pūmua e karapoti ana mā roto i ngā kaha Van der Waal. Nā tēnei ka tino pakari te hanganga katoa.
Ka puta te UHMW mai i te whakapūhuitanga o te monomer, te ethylene. Mā te whakapūhuitanga o te ethylene ka puta te hua polyethylene turanga. He rerekē rawa te hanganga o te UHMW mai i te HDPE nā te tikanga whakaputa. Ka puta te UHMW i te aroaro o te whakapūhuitanga metallocene (ka puta te HDPE i te aroaro o te whakapūhuitanga Ziegler-Natta).
Ngā tono o te UHMW
Te whakaputanga o ngā wira whetu
Ngā tīwiri
Ngā roera
Ngā taputapu
Ngā pereti reti
He aha te HDPE?
He polyethylene matotoru te HDPE. He rauemi polymer thermoplastic. He matotoru te rauemi nei ina whakaritea ki ētahi atu momo polyethylene. Ko te matotoru o te HDPE e hoatu ana ko te 0.95 g/cm3. Nā te mea he tino iti te peka o te mekameka polymer i roto i tēnei rauemi, he piri ngā mekameka polymer. Nā tēnei ka mārō te HDPE, ā, he ātete nui ki te pānga. Ka taea te whakahaere i te HDPE i raro i ngā pāmahana tata ki te 120°C, kāore he pānga kino. Nā tēnei ka taea te whakamahi i te HDPE ki roto i te autoclave.
Ngā Āhuatanga o te HDPE
Ko ngā āhuatanga nui o te HDPE ko:
He uaua rawa
Ātete pānga teitei
Ka taea te whakamahi ā-aunoa
Āhua mātotoru, āhua mārama rānei
Te ōwehenga kaha-ki-kiato teitei
Mama te taumaha
Kāore, iti iho rānei te mimiti o ngā wai
Ātete matū
Ko te HDPE tētahi o ngā rauemi kirihou e māmā ana te hangarua. Mā ēnei āhuatanga ka whakatauhia ngā whakamahinga o te HDPE.
Ngā Whakamahinga o te HDPE
Ko ētahi o ngā tono nui ko ēnei e whai ake nei.
Whakamahia hei ipu mō ngā matū wai maha pērā i te miraka, hei penapena hoki i ngā matū pērā i te waipiro.
Hei whakaputa i ngā putea hokohoko kirihou
Ngā paepae
Ngā hononga paipa
Ka whakamahia hoki te HDPE mō ngā papa tapahi
He aha ngā āhuatanga rite i waenga i te UHMW me te HDPE?
He mea hanga te UHMW me te HDPE i ngā monomer ethylene.
He pūmua kirihou wera e rua.
He āhua rerekē rawa ngā mea e rua.
| UHMW me HDPE | |
| Ko te UHMW he polyethylene taumaha ngota tino teitei. | Ko te HDPE he polyethylene kiato teitei. |
| Hanganga | |
| He tino roa ngā mekameka pūmua o te UHMW. | He poto ngā mekameka pūmua o te HDPE ki te whakaritea ki te UHMW. |
| Taumaha Ngota o ngā Mekameka Polymer | |
| He tino teitei ngā taumaha ngota o ngā mekameka pūmua o te UHMW. | He iti ake te taumaha ngota o ngā mekameka pūmua o te HDPE ki te whakaritea ki te UHMW. |
| Te whakaputanga | |
| Ka puta te UHMW i te aroaro o te whakakorikori metallocene. | Ka hangaia te HDPE i te aroaro o te whakakorikori Ziegler-Natta. |
| Te mimiti wai | |
| Kāore te UHMW e mimiti i te wai (kāore he mimitinga). | Tērā pea ka mimiti paku te HDPE i te wai. |
Whakarāpopototanga–UHMW me HDPE
He mea hanga te UHMW me te HDPE i ngā monomer ethylene mā te polymerization. Ko te rerekētanga matua i waenga i te UHMW me te HDPE ko te UHMW kei roto i ngā mekameka polymer roa me ngā taumaha ngota tino teitei, engari he teitei te ōwehenga kaha-ki-kiato o te HDPE.
Wā tuku: Hepetema-11-2022
