Aikace-aikacen HPMC a cikin foda

1. Menene madaidaicin danko na HPMC?

——Amsa: Gabaɗaya, yuan 100,000 ya isa ga foda. Abubuwan da ake buƙata don turmi sun fi girma, kuma ana buƙatar yuan 150,000 don sauƙin amfani. Bugu da ƙari, mafi mahimmancin aikin HPMC shine riƙe ruwa, wanda ya biyo baya tare da kauri. A cikin foda mai sakawa, idan dai ruwa yana da kyau kuma danko yana da ƙananan (70,000-80,000), yana yiwuwa kuma. Tabbas, mafi girman danko, mafi kyawun riƙewar ruwa. Lokacin da danko ya wuce 100,000, danko zai shafi riƙewar ruwa. Ba yawa kuma.

2. Menene manyan alamun fasaha naHPMC?

——Amsa: abun ciki na Hydroxypropyl da danko, yawancin masu amfani sun damu da waɗannan alamomi guda biyu. Wadanda ke da babban abun ciki na hydroxypropyl gabaɗaya suna da mafi kyawun riƙe ruwa. Wanda ke da babban danko yana da mafi kyawun riƙe ruwa, in mun gwada da (ba cikakke ba), kuma wanda ke da ɗanko mai ƙarfi ya fi amfani da turmi siminti.

3. Menene babban aikin aikace-aikacen HPMC a cikin foda, kuma yana faruwa ta hanyar sinadarai?

——Amsa: A cikin putty foda, HPMC tana taka rawa uku na kauri, riƙe ruwa da gini. Kauri: Za a iya kauri cellulose don dakatarwa da kuma kiyaye maganin daidai sama da ƙasa, da tsayayya da sagging. Riƙewar ruwa: sanya foda ta bushe a hankali, kuma ta taimaka wa ash calcium don amsawa ƙarƙashin aikin ruwa. Gina: Cellulose yana da sakamako mai lubricating, wanda zai iya sa foda na putty yana da kyakkyawan gini. HPMC baya shiga cikin kowane halayen sinadarai, amma yana taka rawar taimako kawai. Ƙara ruwa a cikin foda da kuma sanya shi a kan bango wani nau'i ne na sinadaran, saboda an samar da sababbin abubuwa. Idan ka cire foda da ke jikin bango daga bangon, ka niƙa shi ya zama foda, ka sake amfani da shi, ba zai yi aiki ba saboda an samu sababbin abubuwa (calcium carbonate). ) kuma. Babban abubuwan da ke cikin ash calcium foda sune: cakuda Ca (OH) 2, CaO da ƙananan CaCO3, CaO + H2O = Ca (OH) 2 -Ca (OH) 2 + CO2 = CaCO3↓ + H2O Ash calcium yana cikin ruwa da iska A karkashin aikin CO2, calcium carbonate yana haifar da shi, yayin da HPMC kawai yana riƙe da ruwa kuma yana taimakawa wajen amsawa.

4. HPMC shine ether cellulose maras ionic, don haka menene ba ionic ba?

——Amsa: A ma’anar ɗan adam, waɗanda ba ions ba su ne abubuwan da ba za su ionize cikin ruwa ba. Ionization yana nufin tsarin da ake rarraba electrolyte zuwa ions da aka caje wanda zai iya motsawa cikin yardar kaina a cikin wani ƙayyadadden ƙarfi (kamar ruwa, barasa). Misali, sodium chloride (NaCl), gishirin da muke ci kowace rana, yana narkar da ruwa da ionizes don samar da ions sodium ions (Na+) masu motsi da yardar rai da kuma chloride ions (Cl) waɗanda aka caje su. Wato lokacin da aka sanya HPMC a cikin ruwa, ba zai rabu da ions da aka caje ba, amma ya kasance a cikin nau'in kwayoyin halitta.

5. Shin akwai wata dangantaka tsakanin digo na putty foda da HPMC?

——Amsa: Asarar foda na ɗigon foda yana da alaƙa da ingancin ash calcium, kuma ba shi da alaƙa da HPMC. Ƙananan abun ciki na calcium mai launin toka mai launin toka da daidaitaccen rabo na CaO da Ca (OH) 2 a cikin launin toka zai haifar da asarar foda. Idan kuma yana da alaqa da HPMC, to idan ruwa na HPMC ba shi da kyau, kuma zai haifar da asarar foda.

6. Yadda za a zabi mai dacewaHPMCdon dalilai daban-daban?

——Amsa: Aikace-aikace na putty foda: buƙatun ba su da ɗanɗano kaɗan, kuma danko shine 100,000, wanda ya isa. Muhimmin abu shine kiyaye ruwa da kyau. Aikace-aikace na turmi: mafi girma bukatun, high danko, 150,000 ne mafi alhẽri. Aikace-aikacen manne: ana buƙatar samfuran nan take tare da babban danko.