Ko te tikanga papatipu kotahi (tikanga uta taumaha pumau) tētahi o ngā tikanga whakamātautau e whakamahia whānuitia ana mō ngā taputapu tere rere rewa (MFR)–YYP-400E;
Ko te kaupapa matua o tēnei tikanga he whakamahi i tētahi kawenga pumau ki te kirihou rewa mā te whakamahi i tētahi taumaha papatipu pumau, kātahi ka ine i te papatipu o te rauemi rewa e rere ana i roto i te mate paerewa i tētahi pāmahana me te wā kua tohua hei tatau i te tere rere. Ko ōna painga e whakaatahia ana i roto i ngā āhuatanga maha pēnei i te mahi, te tika, te whaihua, me te utu. Ko ngā taipitopito e whai ake nei:
1. He māmā noa iho te tukanga whakahaere, ā, he tino tika hoki. Ko te tikanga papatipu kotahi e hiahia ana ki te whirihoranga o ngā taumaha rahi-pūmau anake, ā, kāore e hiahiatia he taputapu whakawhiti kawenga uaua. I te wā whakamātautau, whakamahana noa i te tauira kia rewa, utaina te taumaha pūmau, wāhia, ka kohia te rauemi rewa e rere ana. He torutoru noa ngā mahi, ā, he teitei te paerewa, he iti ngā whakaritenga pūkenga mō ngā kaiwhakahaere, ā, ka taea te tere te ako me te whakahoki anō. Ki te whakatauritea ki te tikanga kawenga rerekē (pēnei i te whakamātautau taumaha-maha mō te tere rere rōrahi rewa MVR), ka kore e hiahiatia te whakakapi i ngā taumaha me te whakatikatika i ngā kawenga, ka whakaiti nui i te wā whakarite mō te whakamātautau kotahi.
2. He tino pumau ngā raraunga whakamātautau, ā, ka taea te whakahaere i te hapa. I raro i te kawenga pumau, he pumau te ahotea kutikuti i runga i te rauemi rewa, he ōrite te tere rere, ā, he iti te piki me te heke o te papatipu rauemi rewa kua kohia, ka hua ake he pai te whakahokinga o te uara MFR. Ka taea te whakahaere tika i te tika o te kounga o ngā taumaha mā te whakatikatika (me te tika o te ±0.1g), me te karo i ngā hapa tāpiri i puta mai i ngā huinga taumaha me te tuku miihini i roto i te tikanga kawenga rerekē. He tino pai tēnei mō te whakamātautau tika o te kirihou rere-iti (pēnei i te PC, PA) me te kirihou rere-nui (pēnei i te PE, PP).
3. He māmā ake te hanganga o ngā taputapu, he iti ake te utu, ā, he watea te tiaki. Kāore e hiahiatia he pūnaha whakatikatika kawenga uaua mō te taputapu MFR e whakamahi ana i te tikanga papatipu kotahi (pēnei i te uta hiko, te rokiroki taumaha), ā, he iti ake te rahi o ngā taputapu, he iti ake ngā wāhanga, ka iti ake te utu hoko mai i te 20% ki te 40% ki te whakataurite ki ngā taputapu momo taumaha maha. Ko te tiaki o ia rā ko te whakatikatika noa i te taumaha o ngā taumaha, te horoi i te mate me te oko, ā, kāore e hiahiatia he tiaki i te pūnaha tuku, i te pūnaha whakahaere rānei. He iti te tere o te rahunga, he roa te huringa tiaki, ā, he pai mō te tirotiro kounga auau i roto i ngā umanga iti me te rahi waenga, i ngā taiwhanga rānei.
4. E tutuki ana i ngā whakaritenga paerewa, ā, he pai mō ngā āhuatanga tirotiro kounga noa. Ka tutuki katoa te tikanga papatipu kotahi i ngā whakaritenga o ngā paerewa matua pērā i te ISO 1133-1 me te ASTM D1238, ā, he tikanga tuku iho mō te tirotiro hou o ngā rauemi mata kirihou me te whakahaere kounga o te tukanga whakaputa. Mō te tirotiro wheketere o te nuinga o ngā kirihou whānui (pērā i te PE, PP, PS), ko te kawenga pumau paerewa anake (pērā i te 2.16kg, 5kg) e hiahiatia ana hei whakaoti i te whakamātautau, me te kore e hiahiatia he whakatikatika tawhā tāpiri, ā, he pai mō ngā hiahia o te tirotiro kounga nui-ahumahi.
5. He māmā noa iho ngā hua raraunga, ā, he mea whakarite hoki mō te tātari whakatairite. Ka whakaatuhia tika ngā hua whakamātautau i roto i ngā waeine "g/10min", ā, ko te rahi tau e whakaata tika ana i te rere o te rauemi rewa, kia māmā ai te whakataurite whakapae i waenga i ngā puranga rerekē me ngā kaihanga rerekē o ngā rauemi mata. Hei tauira: mō te rauemi mata PP waitohu kotahi, mēnā ko te MFR o te puranga A he 2.5g/10min, ā, ko te puranga B he 2.3g/10min, ka taea te whakatau tika he pai ake te rere o te puranga A, me te kore e hiahiatia he huringa uaua, he tukatuka raraunga rānei.
Me mārama ko te herenga o te tikanga kounga kotahi kei roto i tōna kore e taea te ine i te tere kutikuti e pā ana ki te rewa. Mena me ako te tangata i ngā āhuatanga rheological o ngā kirihou i raro i ngā kawenga rerekē, me whakamahi ngātahi he taputapu MVR momo kawenga maha, he rheometer capillary rānei.
Wā tuku: Hakihea-13-2025