2026-07-21
Ka tirotirohia e tenei tuhinga te awe o te momo whakakorikori konukawata me te kukū ki runga i nga hononga whakawhiti o te rapa silicone-whakaora. Momo whakakōkī: Ko te whakakōkī Speier (waikawa chloroplatinic, Pt⁴⁺) me whakaheke ki ngā momo iti-valent kaha, ka mahi hei whakangao; Ko te karstedt catalyst (Pt⁰ me te divinyltetramethyldisiloxane) ka uru tika ki te huringa catalytic. Momo nga paanga: Ka whakaatu a Speier i te wa whakaurunga me te anau whakaora-S-ahua (he puhoi moata, ka whakaterehia i muri mai) me te kaha ake o te kaha whakahohenga; Karekau a Karstedt e whakaatu ana i te whakaurunga, teitei te reiti tuatahi me te koi whakawera, te iti o te kaha whakahohe.
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2026-07-07
I te wa o te sintering, ka rewa nga matūriki PTFE i runga i te papanga muka karaihe ki runga ake i te 327°C, ka whakangaro i nga lamellae takai-a-ringa taketake me nga rohe matūriki hei hanga i te rewa amorphous. Ki runga ki te meangiti, PTFE recrystallizes ki spherulites tito o lamellae radially hāngai, ki crystallinity kopae 50-70%. Ko te reiti whakamahana e whakatau ana i te tino pai o te karaihe: ko te whakamatao puhoi ka nui ake te tioata, te nui o te spherulites, te pakeke ake; ko te tinei tere ka pai ake nga spherulites me te pai ake o te ngawari.
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