He matū nui te MHEC, te methylhydroxyethylcellulose rānei, e whakamahia whānuitia ana i roto i ngā rauemi hanga. He mea tino nui te mahi a te MHEC, inā koa i roto i ngā paninga me ngā rauemi whakaoti pēnei i te putty me te plaster.
1. Mahi o MHEC i putty
He rauemi te putty e whakamahia ana hei whakakī i ngā pakitara kāore i te ōrite, i ētahi atu mata rānei. Me pai te mahi hanga, me te kaha, me te roa hoki. Ko te whakamahinga o te MHEC ki te putty ko ngā āhuatanga e whai ake nei:
a. Pānga whakamātotoru
Ka taea e te MHEC te whakanui ake i te matotoru o te putty, me te whakapai ake i tōna rere me te mahi hanga. Ka taea e tēnei pānga matotoru te āwhina i te whakahaere i te ōritetanga o te putty, kia māmā ai te pania me te pupuri i te matotoru pai ki runga i ngā mata poutū me te kore e totohu. Mā te matotoru tika ka taea hoki te whakapai ake i te mahi ārai-totohu o te putty, kia māmā ake ai te hanga.
b. Te pupuri wai
He pai te pupuri wai o te MHEC, he mea nui tēnei mō te mahi a te putty. Ka roa te wā e maroke ai, e whakapakeke ai te putty i muri i te paninga. Ki te tere rawa te ngaro o te makuku, ka pakaru, ka paura rānei te mata o te putty. Ka taea e te MHEC te hanga i tētahi kiriata pupuri wai i roto i te putty, ā, ka whakaroa i te tere mimiti o te wai, kia maroke ōrite ai te putty, kia whakaitihia ai te hanganga o ngā kapiti, kia pai ake ai te kounga o te hua kua oti.
c. Whakapai ake i te piri
Ka taea e te MHEC te whakapai ake i te piri o te putty, kia pai ake ai te piri ki ngā papa rerekē. He mea nui tēnei mō te pumau me te roa o te paparanga putty. Mā te piri pai ka ārai i te hinganga o te putty, engari ka whakanui ake hoki i te ātete pānga o te putty me te whakaroa i tōna roanga mahi.
2. Te mahi a te MHEC i roto i te gypsum
He rauemi hanga whare e whakamahia whānuitia ana te gypsum, he ātete ahi, he pai hoki ōna āhuatanga whakapaipai. Kāore e taea te wareware i te mahi a te MHEC i roto i te gypsum. Ko ōna āhuatanga matua koia ēnei:
a. Whakapai ake i te mahi tukatuka
Ka whakapai ake te MHEC i ngā āhuatanga tukatuka o te paraikete, kia māmā ake ai te whakaranu me te hora. Mā te whakarerekē i te matotoru me te ōritetanga o te paru gypsum, ka taea e te MHEC te āwhina i ngā kaimahi hanga ki te whakahaere pai ake i te nui me te matotoru o te gypsum e pania ana. He tino whai hua tēnei hei whakapai ake i te whai huatanga o te hanga me te papatahi o te hua kua oti.
b. Whakapai ake i te ātete pakaru
He ngāwari te whakaiti i te kapiti o te pāreti i te wā e whakapakeketia ana, ka pā ki tōna āhua me tōna mahi. Mā te mahi pupuri wai o te MHEC ka taea te whakaroa i te tere mimiti o te wai i roto i te gypsum, te whakaiti i te hanganga o te ahotea ā-roto, ā, ka whakaiti i te putanga mai o ngā kapiti. Hei tāpiri, ka taea e te MHEC te whakapai ake i te ngāwari o te pāreti, kia ātete ake ai ki te pēhanga o waho.
c. Whakapai ake i te maeneene o te mata
Mā te whakamahinga o te MHEC i roto i te gypsum ka taea hoki te whakapai ake i te maeneene o te mata, ā, ka ātaahua ake te āhua o ngā hua gypsum. Ehara i te mea he pai ake te whakapaipai o te mata maeneene, engari he pai ake hoki te turanga mō te piri o te peita, e āwhina ana i ngā tukanga peita o muri mai.
Hei tāpiri rauemi hanga nui, he maha ngā āhuatanga pai o te MHEC ina whakamahia ki te putty me te gypsum. Ehara i te mea ka taea anake te whakapai ake i te mahi hanga, te whakapai ake i te piri me te pupuri wai o ngā rauemi, engari ka tino whakapai ake hoki i te ātete ki te pakaru me te kounga o te mata o te hua kua oti. Nā ēnei āhuatanga i whānuitia ai te whakamahinga o te MHEC i roto i te umanga hanga, ā, ka noho hei wāhanga nui o ngā rauemi pēnei i te putty me te paraikete. I te heke mai, me te whanaketanga o te hangarau hanga me te whakapai ake i ngā whakaritenga mahi rauemi, ka whānui ake ngā tūmanakohanga tono o te MHEC.
Wā tuku: Akuhata-01-2024