Mo te raruraru he ngawari te paura putty ki te paura, kaore ranei i te kaha te kaha.E mohio ana tatou katoa, me tapirihia te cellulose ether ki te hanga paura putty, ka whakamahia te HPMC mo te putty pakitara, a he maha nga kaiwhakamahi kaore i te taapiri i te paura taherapa redispersible.He maha nga tangata kaore i te taapiri i te paura polymer kia pai ai te utu, engari koinei hoki te mea matua he maamaa te putty noa ki te paura me te raru ki nga raru o te kounga hua!
Ko te putty noa (penei i te 821 putty) he mea hanga ki te paura ma, he kopa maaka iti me te CMC (hydroxymethyl cellulose), ko etahi he mea hanga ki te methyl cellulose me te paura Shuangfei.Ko tenei putty karekau he piri, kaore hoki he wai atete.
Ka taea e te Cellulose te mimiti i te wai ka pupuhi i muri i te rewa ki te wai.Ko nga hua mai i nga kaihanga rereke he rereke nga reiti whakauru wai.Ka whai waahi te Cellulose ki te pupuri wai i roto i te putty.Ko te putty kua whakamaroke he kaha mo te wa poto, a ka mutu te paura i muri i te wa roa.He hononga tata tenei ki te hanganga ngota o te cellulose ake.He matara taua putty, he nui te momi wai, he ngawari ki te para, karekau he kaha, karekau he elasticity.Mena ka whakamahia te koti ki runga, he ngawari te pakaru o te PVC iti me te pahuka;Ko te PVC teitei he ngawari ki te whakaheke me te pakaru;na te kaha o te whakauru o te wai, ka pa ki te hanga kiriata me te hanga o te topcoat.
Mena kei te pirangi koe ki te whakapai ake i nga raru o runga ake o te putty, ka taea e koe te whakatika i te tauira putty, taapirihia etahi paura taherapa tuku kia tika kia pai ake te kaha o muri o te putty, me te whiriwhiri i te HPMC hydroxypropyl methylcellulose kounga teitei me te kounga taurangi.
I roto i te mahi hanga putty, ki te kore e ranea te nui o te paura taherapa ka taea te tapiri, ki te whakamahia ranei te paura taherapa iti mo te putty, he aha te paanga ki te paura putty?
He iti rawa te paura o te putty redispersible latex paura, ko te whakaaturanga tino tika ko te paparanga putty he wetekina, he maru te mata, he nui te nui o te peita e whakamahia ana mo te paninga o runga, he ngoikore te rawa o te taumata, he taratara te mata i muri i te hanganga o te kiriata, a he uaua ki te hanga i tetahi kiriata peita matotoru.Ko enei pakitara he pai ki te tihorea, ki te pupuhi, ki te tihorea, ki te pakaru o te kiriata peita.Ki te whiriwhiri koe i te paura putty iti, ka kitea ko nga hau kino penei i te formaldehyde ka puta i runga i te pakitara ka pa te kino ki etahi atu.
Wā tuku: Hune-15-2023