Kushandiswa kweHPMC muupfu hweputty

1. Chii chinonzi viscosity yakakodzera yeHPMC?

——Mhinduro: Kazhinji, 100,000 yuan inokwana putty powder. Zvinodiwa zvemortar zvakakwira, uye 150,000 yuan inodiwa kuti ishandiswe zviri nyore. Uyezve, basa guru reHPMC kuchengetedza mvura, richiteverwa nekukora. Muputty powder, chero bedzi mvura iri kuchengetwa zvakanaka uye viscosity yakaderera (70,000-80,000), zvinogonekawo. Ehe, viscosity yakakwira, mvura iri kuchengetwa zviri nani. Kana viscosity ikadarika 100,000, viscosity inokanganisa kuchengetedza mvura. Hazvichanyanyi kukosha.

2. Ndezvipi zviratidzo zvikuru zvehunyanzvi zveHPMC?

——Mhinduro: Kuwanda kwehydroxypropyl uye kusviba, vashandisi vazhinji vanonetseka nezvezviratidzo zviviri izvi. Avo vane hydroxypropyl yakawanda vanowanzo chengeta mvura zviri nani. Iyo ine kusviba kwakanyanya inochengetedza mvura zviri nani, zvishoma (kwete zvachose), uye iyo ine kusviba kwakanyanya inoshandiswa zviri nani mumota yesimende.

3. Ndeipi basa guru rekushandisa HPMC mupudhi yeputty, uye inoitika here nemakemikari?

——Mhinduro: Muupfu hweputty, HPMC inoita mabasa matatu ekuwedzera kukora, kuchengetedza mvura uye kuvaka. Kukora: Cellulose inogona kukora kuti irambe yakakora uye ichengetedze mhinduro yakafanana kumusoro nekudzika, uye kudzivirira kudonha. Kuchengetwa kwemvura: kuita kuti upfu hweputty huome zvishoma nezvishoma, uye kubatsira ash calcium kuti iite chiito pasi pesimba remvura. Kuvaka: Cellulose ine mafuta ekuzora, izvo zvinogona kuita kuti upfu hweputty huve nekuvaka kwakanaka. HPMC haibatanidzi mune chero maitiro emakemikari, asi inongoita basa rekubatsira chete. Kuwedzera mvura kuhupfu hweputty uye kuiisa pamadziro inyaya yemakemikari, nekuti zvinhu zvitsva zvinoumbwa. Kana ukabvisa upfu hweputty pamadziro kubva pamadziro, wohukuya kuita upfu, wohushandisa zvakare, hazvizoshande nekuti zvinhu zvitsva (calcium carbonate) zvaumbwa. ) zvakare. Zvinhu zvikuru zviri muupfu hwecalcium yemumadota ndeizvi: musanganiswa weCa(OH)2, CaO uye huwandu hushoma hweCaCO3, CaO+H2O=Ca(OH)2 —Ca(OH)2+CO2=CaCO3↓+H2O Kalsiamu yemumadota iri mumvura nemhepo Pasi pekushanda kweCO2, calcium carbonate inogadzirwa, nepo HPMC ichingochengeta mvura chete, ichibatsira kuita zviri nani kwecalcium yemumadota, uye haibatanidzwi mune chero chiito pachayo.

4. HPMC i-non-ionic cellulose ether, saka chii chinonzi non-ionic?

——Mhinduro: Mumashoko emunhuwo zvake, ma non-ion zvinhu zvisingazovi ioni mumvura. Ionization zvinoreva maitiro apo electrolyte inosanganiswa kuita ma ioni ane chaji anogona kufamba zvakasununguka mune chimwe chinhu chinonyungudutsa (senge mvura, doro). Semuenzaniso, sodium chloride (NaCl), munyu watinodya zuva nezuva, unonyunguduka mumvura uye unovimbika kuti ugadzire ma sodium ions (Na+) ane chaji yakanaka uye ma chloride ions (Cl) ane chaji yakaipa. Kureva kuti, kana HPMC ikaiswa mumvura, haizoparadzanisi kuita ma ioni ane chaji, asi inovapo muchimiro chemamorekuru.

5. Pane hukama huripo pakati pekudonha kweputty powder neHPMC here?

——Mhinduro: Kurasikirwa nehupfu hweputty powder kunonyanya kukonzerwa nehunhu hwecalcium yemumadota, uye hakuna chekuita neHPMC. Kuderera kwecalcium mugray calcium uye chiyero chisina kunaka cheCaO neCa(OH)2 mugray calcium zvichakonzera kurasikirwa nehupfu. Kana zvine chekuita neHPMC, saka kana kuchengetwa kwemvura kweHPMC kwakashata, zvichakonzerawo kurasikirwa nehupfu.

6. Maitiro ekusarudza yakakodzeraHPMCnezvinangwa zvakasiyana?

——Mhinduro: Kuisa putty powder: zvinodiwa zvakaderera, uye viscosity i100,000, zvinokwana. Chinhu chakakosha kuchengetedza mvura zvakanaka. Kuisa mortar: zvinodiwa zvakanyanya, viscosity yakawanda, 150,000 zviri nani. Kuisa glue: zvigadzirwa zvepakarepo zvine viscosity yakawanda zvinodiwa.