Ayyukan ether cellulose a cikin turmi sune: riƙewar ruwa, haɓaka haɗin kai, kauri, tasiri lokacin saita lokaci, da abubuwan haɓaka iska.Saboda waɗannan halayen, yana da sararin aikace-aikace mai faɗi a cikin ginin kayan gini.
1. Riƙewar ruwa na ether cellulose shine mafi mahimmancin sifa a cikin aikace-aikacen turmi.
Babban abubuwan da ke shafar riƙewar ruwa na ether cellulose: danko, girman barbashi, sashi, sashi mai aiki, adadin rushewa, tsarin riƙe ruwa: riƙewar ruwa na ether cellulose kanta ya fito ne daga solubility da dehydration na cellulose ether kanta.Kodayake sarkar kwayoyin cellulose ta ƙunshi babban adadin ƙungiyoyin hydroxyl tare da kaddarorin hydration mai ƙarfi, ba mai narkewa cikin ruwa ba.Wannan saboda tsarin cellulose yana da babban matakin crystallinity, kuma ikon hydration na ƙungiyoyin hydroxyl kadai bai isa ya lalata igiyoyin intermolecular masu ƙarfi ba.Hydrogen bonds da van der Waals sojojin, don haka sai kawai kumbura amma ba ya narke cikin ruwa.Lokacin da aka shigar da abin maye a cikin sarkar kwayoyin halitta, ba kawai abin da zai maye gurbin shi ya karya haɗin hydrogen ba, har ma haɗin haɗin hydrogen yana karye saboda ƙulla abin da zai maye gurbin tsakanin sarƙoƙi da ke kusa.Girman abin da zai maye gurbin, mafi girman nisa tsakanin kwayoyin halitta shine, wanda ke lalata tasirin haɗin gwiwar hydrogen.Mafi girma da cellulose lattice, bayani ya shiga bayan cellulose lattice ya faɗaɗa, kuma ether cellulose ya zama mai narkewar ruwa, yana samar da babban bayani mai danko.Lokacin da zafin jiki ya tashi, hydration na polymer ya raunana, kuma ana fitar da ruwa tsakanin sarƙoƙi.Lokacin da rashin ruwa ya isa, kwayoyin sun fara haɗuwa, suna samar da tsarin cibiyar sadarwa mai girma uku da hazo gel.
(1) Tasirin girman barbashi da lokacin haɗuwa na ether cellulose akan riƙe ruwa
Tare da adadin adadin cellulose ether, riƙewar ruwa na turmi yana ƙaruwa tare da karuwar danko;ƙara yawan adadin ether cellulose da haɓakar danko yana ƙara yawan riƙe ruwa na turmi.Lokacin da abun ciki na ether cellulose ya wuce 0.3%, canjin turmi mai riƙewar ruwa yana kula da daidaitawa.Ƙarfin riƙe ruwa na turmi ana sarrafa shi ta hanyar lokacin rushewa, kuma mafi kyawun ether cellulose yana narkewa da sauri, kuma ƙarfin riƙe ruwa yana haɓaka da sauri.
(2) Sakamakon digiri na etherification na ether cellulose da zafin jiki akan riƙe ruwa
Yayin da zafin jiki ya tashi, riƙewar ruwa yana raguwa, kuma mafi girman matakin etherification na ether na cellulose, mafi kyawun yawan zafin jiki na ruwa na cellulose ether.A lokacin amfani, yawan zafin jiki na turmi mai gauraye yakan kasance ƙasa da 35°C, kuma a ƙarƙashin yanayi na musamman, zafin na iya kaiwa ko ma wuce 40°C.A wannan yanayin, dole ne a daidaita tsarin kuma a zaɓi samfurin tare da babban matakin etherification.Wato, la'akari da zabar ether cellulose mai dacewa.
2. Tasirin ether cellulose akan abun cikin iska na turmi
A cikin kayan busassun busassun kayan turmi, saboda ƙari na ether cellulose, an shigar da wani ƙayyadaddun ƙanƙanta, rarraba iri ɗaya da tsayayyen kumfa na iska a cikin turmi mai gauraye sabo.Saboda tasirin ball na kumfa na iska, turmi yana da kyakkyawan aiki kuma yana rage raunin turmi.Fasa da raguwa, da ƙara yawan fitarwar turmi.
3. Tasirin ether cellulose akan ciminti hydration
Cellulose ether yana da jinkiri ga hydration na turmi na tushen ciminti, kuma an inganta tasirin retardation tare da karuwar abun ciki na ether cellulose.Abubuwan da ke tasiri na ether cellulose akan ciminti hydration sune: sashi, digiri na etherification, nau'in siminti.
Lokacin aikawa: Fabrairu-02-2023