Nitori awọn abuda hydration tirẹ ati eto ti ara, gypsum jẹ ohun elo ile ti o dara pupọ ati pe a lo nigbagbogbo ni awọn ọja ọṣọ inu ile ati ajeji. Sibẹsibẹ, niwon gypsum ṣeto ati lile ni kiakia, akoko iṣẹ nigbagbogbo jẹ iṣẹju 3 si 30, eyiti o rọrun lati ṣe idinwo lilo gypsum. Nitorinaa, o ṣe pataki pupọ lati ṣafikun gypsum retarder.
Nigba ti retarder yi akoko idaduro ti gypsum pada, o tun ba agbara jẹ gidigidi.
Awọn anfani ti gypsum retarder:
Nfi iye diẹ kun, akoko idaduro to gun
Lile ti o ga julọ lẹhin coagulation, ti kii ṣe majele, aibikita ati ore ayika diẹ sii
1. First Mix ikole gypsum lulú pẹlu retarder, Yuhe hydroxypropyl methylcellulose tabi awọn miiran additives boṣeyẹ, ki o si fi iyanrin, eru kalisiomu, bbl, fi iyanrin tabi eru kalisiomu ati ki o aruwo fun 15 iṣẹju ṣaaju ki o to dasile. (Akiyesi: Nitori iyatọ pato pato ti awọn ohun elo, stratification yoo wa lẹhin igbiyanju igba pipẹ, eyiti yoo ni ipa lori didara ọja naa.)
2. Fun awọn ọja miiran, gẹgẹbi awọn gypsum m ati omi gel ti o ni idaduro, o le fi awọn retarder sinu omi ni akọkọ, lẹhinna fi sii lati lo lẹhin tituka.
Awọn agbekalẹ adaṣe ti awọn ọja gypsum
Pilasita Stucco ni isalẹ:
Pure gypsum mimọ 300 kg
700 kg itanran odo iyanrin
Hydroxypropyl methylcellulose 0.5-0.7 kg
Gypsum retarder 0,8-1 kg
Pilasita alemora (oriṣi gbigbe lọra):
Pure gypsum mimọ 800 kg
Eru kalisiomu lulú 200 kg
Hydroxypropyl methylcellulose 2.5 kg
Retarder 2,5 kg
Ipari pilasita kikun (gypsum putty):
Iyẹfun gypsum mimọ 500-700 kg
Eru kalisiomu lulú 300-500 kg
Hydroxypropyl methylcellulose 2-2.5 kg
Gypsum retarder 1.5-2.1 kg
pilasita caulk:
700 kg ti funfun gypsum lulú
Eru kalisiomu lulú 300 kg
Hydroxypropyl Cellulose 2.5kg
Dispersible latex lulú 2kg
Gypsum retarder 2 kg
Akoko ifiweranṣẹ: Oṣu Kẹrin Ọjọ 14-2023