Kugwiritsa ntchito calcium formate

Calcium formate ntchito: mitundu yonse ya matope osakaniza owuma, mitundu yonse ya konkire, zinthu zosavala, mafakitale apansi, mafakitale a chakudya, kufufuta. Kuchuluka kwa calcium formate ndi pafupifupi 0.5 ~ 1.0% pa tani ya dothi youma ndi konkriti, ndipo kuchuluka kowonjezerako ndi 2.5%. Kuchuluka kwa calcium formate kumachulukitsidwa pang'onopang'ono ndi kuchepa kwa kutentha, ndipo ngakhale kuchuluka kwa 0.3-0.5% kumagwiritsidwa ntchito m'chilimwe, kumakhala kothandiza kwambiri.
Calcium formate ndi ya hygroscopic pang'ono ndipo imakonda kuwawa pang'ono. Wosalowerera ndale, wopanda poizoni, wosungunuka m'madzi. Njira yamadzimadzi ndiyosalowerera. Kusungunuka kwa calcium formate sikumasintha kwambiri ndi kuwonjezeka kwa kutentha, 16g/100g madzi pa 0 ℃ ndi 18.4g/100g madzi pa 100 ℃. Kuchuluka kwamphamvu yokoka: 2.023(20 ℃), kachulukidwe kachulukidwe 900-1000g/L. Kutentha kwa kuwonongeka kwa kutentha >400 ℃.
Pomanga, imagwiritsidwa ntchito ngati chothandizira mwachangu, mafuta opangira mafuta komanso mphamvu yoyambira simenti. Ntchito yomanga matope ndi konkire zosiyanasiyana, kufulumizitsa kuumitsa liwiro la simenti, kufupikitsa kuika nthawi, makamaka yozizira yomanga, kupewa otsika kutentha akhazikike liwiro ndi wodekha kwambiri. Fast demoulding, kotero kuti simenti posachedwapa kusintha mphamvu ntchito.
Formic acid imasinthidwa ndi hydrated laimu kuti ipange calcium formate, ndipo malonda a calcium formate amapezedwa poyenga. Sodium formate ndi calcium nitrate amawonongeka kawiri pamaso pa chothandizira kuti apeze calcium formate ndikupanganso sodium nitrate. Mapangidwe a calcium yamalonda adapezedwa poyenga.
Popanga pentaerythritol, calcium hydroxide imagwiritsidwa ntchito popereka zinthu zofunika kuchita, ndipo calcium formate imapangidwa powonjezera formic acid ndi calcium hydroxide panthawi ya neutralization.
Anhydrous formic acid angapezeke mwa kusakaniza formic acid ndi phosphorous pentoxide ndi distillation pansi pa kupanikizika kwafupipafupi, mobwerezabwereza 5 mpaka 10, koma kuchuluka kwake kumakhala kochepa komanso kumatenga nthawi, zomwe zingayambitse kuwonongeka. Kusungunula kwa formic acid ndi boric acid ndikosavuta komanso kothandiza. Boric acid imachotsedwa pamadzi otentha kwambiri mpaka sichimatulutsa thovu, ndipo zotsatira zake zimasungunuka zimatsanuliridwa pa pepala lachitsulo, litakhazikika mu chowumitsira, ndiyeno likuphwanyidwa kukhala ufa.
Mafuta abwino a borate phenol anawonjezeredwa ku formic acid ndikuyikidwa kwa masiku angapo kuti apange misa yolimba. Madzi omveka bwino adasiyanitsidwa kuti asungunuke ndipo gawo la distillation la 22-25 ℃/12-18 mm linasonkhanitsidwa ngati mankhwala. Chotsaliracho chiyenera kukhala cholumikizana bwino ndikutetezedwa ndi chitoliro chowumitsa.
Sungani m'nyumba yosungiramo zinthu zoziziritsa kukhosi komanso mpweya wabwino. Khalani kutali ndi moto ndi kutentha. Kutentha kwa nkhokwe sikuyenera kupitirira 30 ℃, ndipo chinyezi sichiyenera kupitirira 85%. Sungani chidebe chosindikizidwa. Iyenera kusungidwa mosiyana ndi oxidizers, alkalis ndi ufa wachitsulo wogwira ntchito, ndipo sayenera kusakanikirana. Zokhala ndi mitundu yofananira komanso kuchuluka kwa zida zozimitsa moto. Malo osungiramo zinthu ayenera kukhala ndi zida zoperekera chithandizo chadzidzidzi zomwe zidatayikira komanso zida zoyenera zosungira.