Putty powder ndi zida zomangira zodziwika bwino zomwe zimagwiritsidwa ntchito kutikita ndi kukonzanso makoma, madenga ndi malo ena. Ndi chisakanizo cha zipangizo zosiyanasiyana monga simenti, filler ndi binder. Hydroxypropylmethylcellulose (HPMC) ndi imodzi mwa zomangira zomwe zimagwiritsidwa ntchito mu putty powder. HPMC ndi polima yopanda poizoni, yopanda fungo yomwe imapangitsa kuti ufa wa putty ukhale wogwira ntchito. Amagwiritsidwa ntchito mu ming'alu yamitundu yosiyanasiyana ya putty kuti apititse patsogolo ntchito yake. Nkhaniyi ifotokoza za mitundu inayi ya ming'alu ya putty ndi momwe mungagwiritsire ntchito HPMC pamtundu uliwonse.
Mitundu inayi ya ming'alu ya putty ndi iyi:
1. Kuchepa ming'alu
Kuchepa kwa ming'alu chifukwa cha putty youma. Putty ikauma, imachepa, zomwe zimapangitsa kuti ming'alu iwoneke pamwamba. Kuopsa kwa ming'alu iyi kumadalira kapangidwe ka putty. HPMC ikhoza kuwonjezeredwa ku putty kuti muchepetse ming'alu ya shrinkage. HPMC imagwira ntchito ngati chosungira madzi, imachepetsa kuyanika ndikulola kuti putty iume mofanana. Zimachepetsanso kuchuluka kwa madzi ofunikira kusakaniza putty, zomwe zimathandiza kuchepetsa kuchepa panthawi yowuma.
2. Mng'alu wotentha
Kuphulika kotentha kumachitika chifukwa cha kufalikira ndi kutsika kwa zinthu pamene kutentha kumasintha. Amapezeka m'nyumba zomwe zimakhala ndi kutentha kwakukulu, monga m'madera omwe nyengo imakhala yovuta kwambiri. HPMC ikhoza kuthandizira kuchepetsa kuphulika kwa kutentha poonjezera katundu wosungira madzi wa putties. Polima imagwira ntchito ngati chomangira chomwe chimathandiza kugwirizanitsa zigawo zina za putty. Izi zimachepetsanso chiopsezo chosweka chifukwa cha kuwonjezereka kwa kutentha ndi kutsika.
3. Kuumitsa ming'alu
Kuwumitsa ming'alu kumachitika chifukwa cha kuuma kwa putty. Pamene putty imauma, imataya kusinthasintha kwake, ndikupangitsa kuti iphwanyike. HPMC ingathandize kuchepetsa kuuma ming'alu powonjezera kusinthasintha kwa putty. Polima iyi imagwira ntchito ngati pulasitiki, zomwe zimapangitsa kuti putty azisinthasintha. Izi zimathandiza kuti zithe kupirira mayendedwe a pamwamba omwe amajambulapo, kuchepetsa chiopsezo cha kusweka.
4. Mapangidwe a ming'alu
Ming'alu yamapangidwe imachitika chifukwa cha kusuntha kwa kapangidwe kake kapena pansi. Zitha kuchitika chifukwa cha zinthu zosiyanasiyana, monga kutsika, zivomezi, kapena kusintha kwa chinyezi chapamtunda. HPMC ikhoza kuthandizira kuchepetsa ming'alu yamapangidwe mwa kukonza zomatira za putties. Polima amachita ngati binder, kuthandiza putty kumamatira bwino pamwamba. Izi zimachepetsanso chiopsezo chosweka chifukwa cha kuyenda kwa pansi.
HPMC ndi chinthu chofunika kwambiri mu ufa wa putty chifukwa chingathandize kupititsa patsogolo ntchito za mitundu yosiyanasiyana ya ming'alu ya putty. Pochepetsa chiwopsezo cha kuchepa, kutentha, kuuma komanso kusweka kwamapangidwe, HPMC imatha kuthandizira kuonetsetsa kuti ma putty azikhala nthawi yayitali ndikusunga kukongola kwawo. Pamene ntchito yomanga ikupitabe patsogolo, HPMC ikadali chinthu chofunikira kwambiri pamapangidwe onse omanga.
Nthawi yotumiza: Aug-23-2023