Huwandu hweHPMC hunoshandiswa mukushanda hunoenderana nemamiriro ekunze, tembiricha, mhando yeupfu hwecalcium yemuno, fomura yeupfu hweputty uye "mhando inodiwa nevatengi". Kazhinji, huri pakati pe4 kg ne5 kg. Semuenzaniso: hupfu hwakawanda hweputty muBeijing hunosvika 5 kg; hupfu hwakawanda hweputty muGuizhou hunosvika 5 kg muzhizha uye 4.5 kg muchando; huwandu hweputty muYunnan hushoma, kazhinji hunosvika 3 kg kusvika 4 kg, nezvimwewo.
Chii chinonzi viscosity yakakodzera yehydroxypropyl methylcellulose (HPMC) pakugadzira putty powder?
Upfu hweputty hunowanzova 100,000 yuan, uye zvinodiwa zvemortar zvakakwira, uye 150,000 yuan inodiwa kuti zvive nyore kushandisa. Uyezve, basa guru reHPMC kuchengetedza mvura, richiteverwa nekukora. Muupfu hweputty, chero bedzi mvura iri kuchengetwa zvakanaka uye viscosity yakaderera (70,000-80,000), zvinogonekawo. Ehe, viscosity yakakwira, kuchengetedza mvura kuri nani. Kana viscosity ikadarika 100,000, viscosity inokanganisa kuchengetedza mvura. Hazvichanyanyi kukosha.
Basa guru rekushandisa HPMC muupfu hweputty nderei?
Muupfu hweputty, HPMC inoita mabasa matatu ekuwedzera kukora, kuchengetedza mvura uye kuvaka.
Kukora: Cellulose inogona kukobvurwa kuti irambe yakakora uye ichengetedze mvura yakafanana kumusoro nekudzika, uye ichidzivirira kudonha.
Kuchengetwa kwemvura: ita kuti upfu hweputty huome zvishoma nezvishoma, uye batsira ash calcium kuti iite chiito pasi pemvura.
Kuvaka: Cellulose ine simba rekuzora, izvo zvinogona kuita kuti upfu hweputty huve nekugadzirwa kwakanaka.
HPMC haibatanidzwi mune chero maitiro emakemikari, asi inongobatsira chete. Kuwedzera mvura kuhupfu hweputty woiisa pamadziro inyaya yemakemikari, nekuti zvinhu zvitsva zvinoumbwa. Kana ukabvisa hupfu hweputty pamadziro kubva pamadziro, wohukuya kuita hupfu, wohushandisa zvakare, hazvizoshande nekuti zvinhu zvitsva (calcium carbonate) zvagadzirwawo. ) Zvikamu zvikuru zvehupfu hweash calcium ndeizvi: musanganiswa weCa(OH)2, CaO uye huwandu hushoma hweCaCO3, CaO H2O=Ca(OH)2—Ca(OH)2 CO2=CaCO3↓ H2O Basa reash calcium muCO2 mumvura nemhepo. Pasi pemamiriro aya, calcium carbonate inogadzirwa, nepo HPMC ichingochengeta mvura chete, ichibatsira kuita zviri nani kweash calcium, uye haibatanidzwi mune chero maitiro pachayo.
Nguva yekutumira: Chivabvu-09-2023