1. Rapa tūturu
He ngāwari noa te hanga i te rapa maori kia ngāwari te hanga. He iti te matotoru tīmatanga o te rapa maleic paerewa, ā, kāore e hiahiatia kia whakakirikiritia. Mena ka neke atu i te 60 te matotoru Mooney o ētahi atu momo piri paerewa, me whakahāngai tonu. Ina whakamahia he mīhini whakaranu ā-roto mō te whakahāngai, ko te wā e tata ana ki te 3-5 meneti ina eke te pāmahana ki runga ake i te 120 ℃. Ina tāpirihia he kaiwhakahāngai, he kaiwhakahāngai rānei, ka taea te whakapoto i te wā whakahāngai me te whakapai ake i te pānga whakahāngai.
2. Styrene-butadiene
Ko te tikanga whānui, ko te matotoru o te Styrene-butadiene kei waenganui i te 35-60. Nō reira, kāore e hiahiatia he whakakirikiri mō te Styrene-butadiene. Engari i muri i te whakakirikiri, ka taea te whakapai ake i te marara o te matū whakaranu, ka āwhina i te whakapai ake i te kounga o te hua. Ina koa mō ngā hua rapa hautai, he ngāwari te pahuka o te Styrene-butadiene i muri i te whakakirikiri, ā, he ōrite te rahi o te mirumiru.
3. Polybutadiene
He āhua rere matao tō te Polybutadiene, ā, he uaua ki te whakapai ake i te pānga kirihou. I tēnei wā, kua whakahaeretia te matotoru Mooney o te Polybutadiene e whakamahia whānuitia ana i roto i te awhe e tika ana i te wā o te polymerization, kia taea ai te whakaranu tika me te kore e kirihou.
4. Neoprene
Kāore e hiahiatia he kirihou mō te neoprene, engari nā tōna pakari, he mea āwhina mō te mahi. Ko te pāmahana angiangi he 30 ℃ -40 ℃ te tikanga, ā, he ngāwari ki te piri ki te rōra mēnā he teitei rawa.
5. Rapa Ethylene propylene
Nā te hanganga kua mātotoru o te mekameka matua o te rapa Ethylene propylene, he uaua ki te hanga i te pakaru ngota mā te kirihou. Nō reira, he mea tika kia hangaia kia rite ki te matotoru Mooney e tika ana, me te kore e hiahiatia he whakahāngai.
6. Rapa butyl
He pumau, he ngawari hoki te hanganga matū o te rapa butyl, he iti te taumaha ngota, he nui te rere, nō reira kāore i te tino pai te pānga kirihou ā-mīhini. Ka taea te whakaranu tika i te rapa butyl he iti te matotoru o Mooney me te kore e kirihou.
7. Rapa nitrile
He iti te ngāwari o te rapa nitrile, he pakari teitei, ā, he nui te wera e puta mai ana i te wā e whakakirikiritia ana. Nō reira, he iti te pāmahana, he iti te kaha me te whakakirikiritanga wāhanga e whakamahia ana i roto i te mira tuwhera hei whakatutuki i ngā hua pai. Kaua e whakakirikiritia te rapa nitrile i roto i te mīhini whakaranu o roto. Nā te mea he āhua ngāwari te rapa nitrile ngohengohe, ka taea te whakaranu tika me te kore e whakamahine i te kirihou.
Wā tuku: Akuhata-03-2023
