Ka whakamahia whānuitia ngā pūreretā ngāwhā, engari kāre te katoa i te mōhio me pēhea te mahi.Ko te huinga opūreretā waiarikia ka taea e te pepa waiariki te whakaoti i o tatou hiahia ta o ia ra.Na me pehea te mahi a te kaituhi waiariki?
Ko te tikanga, ka utaina he huānga whakawera hikohiko ki runga i te pane tā o te pūreretā waiariki.Ka wera te upoko ta i te wa e mahi ana.Whai muri i te whakapiri ki te pepa waiariki, ka taea te taia he tauira.Ka hipokina te pepa waiariki ki te paparanga kiriata maramara.Pūreretā ngāwhāwhai kōwhiringa.Ka whakamahana te pepa waiariki ki tetahi waahi, a ma te whakamahana, ka puta he tauhohenga matū i roto i te kiriata hei whakaputa whakaahua, he rite te kaupapa ki te miihini waea whakaahua.Ko nga whakamahana he mea tika te whakahaere e te kaituhi i te ahua o nga ira tapawha, i nga takai ranei.Ka peia, ka hangaia he whakairoiro e rite ana ki te huānga whakawera ki te pepa waiariki.
Ko te pepa wera he ahua motuhake o te pepa whakakikoruatia he rite te ahua ki te pepa ma noa.He maeneene te mata o te pepa waiariki, he mea hanga ki te pepa noa hei turanga pepa, ka pania he paparanga o te paparanga chromophoric wera-tairongo ki te mata o te pepa noa.Ka kiia ko te waikano leuco), kaore i te wehea e te microcapsules, a ko te tauhohenga matū kei roto i te ahua "moe".Ina pa ana te pepa wera ki te upoko wera wera, ka tauhohe matū te kaiwhakawhanake tae me te waikano leuco ki te waahi e tā ai te upoko tā, ka huri te tae hei hanga whakaahua me nga tuhinga.
Ina whakanohoia te pepa waiariki ki roto i te taiao i runga ake i te 70°C, ka timata te paninga waiariki ki te huri i te tae.Ko te take o tona ahua ka timata mai i tona hanganga.E rua nga waahanga waiariki matua i roto i te paninga pepa waiariki: ko tetahi ko te waikano leuco, te waikano leuco ranei;ko tetahi atu he kaiwhakawhanake tae.Ka kiia hoki tenei momo pepa waiariki e rua-waahanga momo matū pepa tuhi waiariki.
Ko te nuinga o te whakamahi hei waikano leuco ko: lactone violet tioata (CVL) o te punaha trityl phthalide, te punaha fluoran, te puru benzoylmethylene puru (BLMB), te punaha spiropyran ranei.Ko te nuinga o nga wa e whakamahia ana hei kaiwhakawhanake tae ko: para-hydroxybenzoic acid me ona esters (PHBB, PHB), waikawa salicylic, waikawa 2,4-dihydroxybenzoic, sulfones kakara me etahi atu matū.
Ina whakamahana te pepa waiariki, ka tauhohe matū te waikano leuco me te kaiwhakawhanake ki te whakaputa tae, na ka whakamahia te pepa waiariki ki te whiwhi tohu ki te miihini waea whakaahua, ki te taa tika ranei me tepūreretā waiariki, ka whakaatuhia nga whakairoiro me nga tuhinga.I te mea he maha nga momo waikano leuco, he rereke te tae o te tuhi-a-ringa e whakaatuhia ana, he puru, he papura, he pango me etahi atu.
Te wa tuku: Maehe-18-2022