Sellululosehlulose sel (HEC) shine rashin daidaituwa, ruwa-mai ruwa mai narkewa ne daga sel ta hanyar canji na sunadarai. Ya samu amfani sosai a cikin masana'antu daban daban saboda na musamman kaddarorinsa, kamar thickening, da kuma inganta abubuwa. A aikace-aikacen da inda Zamu na PH yana da mahimmanci, fahimtar yadda HEC ke nuna halin da ake da mahimmanci na PH yana da mahimmanci.
A ranar kula da HEC na nufin iyawarsa ta kula da tsarin da ya dace da tsarinta, kaddarorin rhuholy, da kuma wasan kwaikwayon a fadin kewayon mahalli na zamani. Wannan kwanciyar hankali yana da mahimmanci a aikace-aikace kamar samfuran kulawa na sirri, suttura, da kayan gini, inda ph na yanki na kewaye na iya bambanta sosai.
Tsarin:
An yi amfani da shi ne ta hanyar mayar da shi ta hanyar maido da cellulose tare da ethylene oxide a karkashin alkaline yanayin. Wannan tsari yana haifar da musanya gungun ta hydroxyl na baya tare da hydroxDethyl (-Och2ch2oh) kungiyoyi. Matsayi na musanya (DS) yana nuna matsakaicin adadin ƙimar hydroxyl a cikin rukunin Anhydroguse a cikin sarkar sel.
Kaddarorin:
Sallasifi: Hec yana da narkar da ruwa cikin ruwa da kuma siffofin a sarari, viscous mafita.
Daraja: Yana nuna halaye-thinning hali ko karfi na thinning, ma'ana dankalinta ya ragu a karkashin damuwa mai wahala. Wannan dukiyar tana sanya shi da amfani a aikace-aikacen da ke gudana mahimmanci, kamar nigts da coftings.
Thickening: HEC ba da danko ga mafita, yana yin shi mai mahimmanci a matsayin wakili mai tsinkaye a cikin tsari daban-daban.
Fim-foring: zai iya samar da finafinan m fina-finai lokacin da aka bushe, wanda yake da amfani a aikace-aikace kamar adon da kwalliya.
ph duban hec
Jawabin HEC na HEC yana tasiri abubuwa da yawa, gami da sinadarai na polymer, hulɗa tare da kewayon da ke kewaye da shi, da kowane ƙari a cikin tsari.
PH kwanciyar hankali na HEC a cikin jerin PR daban-daban:
1. Acidic pH:
A acidic pH, HEC galibi tsayayye ne amma na iya yin hydrolysis akan mika lokaci a karkashin yanayin matsananc acidic yanayin. Koyaya, a yawancin aikace-aikacen aikace-aikace, kamar kayayyakin kulawa na mutum da sutura, inda acidic ph ana haɗuwa da shi, HEC ya kasance mai rauni a cikin PH Faɗe (PH 3 zuwa 6). Bayan PH 3, haɗarin hydrolysis yana ƙaruwa, yana haifar da raguwa a hankali cikin danko da aiki. Yana da mahimmanci don saka idanu akan pH na kirkirar da ke ɗauke da HEC kuma ta daidaita su kamar yadda ya zama dole don kula da kwanciyar hankali.
2. Matsakaici ph:
HEC ya nuna kyakkyawan kwanciyar hankali a karkashin yanayin tsaka tsaki (PH 6 zuwa 8). Wannan kewayon ph gama gari ne a aikace-aikace da yawa, gami da kayan shafawa, magunguna, da samfuran gida. Hanyoyin da suka ƙunshi riƙe su na danko, kaddarorin da suka yi, da kuma aikin gabaɗaya cikin wannan kewayon PH. Koyaya, dalilai kamar zafin jiki da kuma ionic karfi na iya yin tasiri kwanciyar hankali kuma ya kamata a yi la'akari da lokacin ci gaba.
3. Alkaline PH:
Hec ba shi da tsayayye a karkashin yanayin alkaline idan aka kwatanta da acidic ko tsaka tsaki ph. A matakan PHR (sama da PH 8), HEC na iya yin lalata, sakamakon shi ya ragu cikin danko da asarar aiki. Alkaline hydrolysis na eth erth haɗin haɗin haɗin gwiwa tsakanin pelluloseackackackack da kungiyoyi masu hydroxyl na iya faruwa, suna haifar da darajar sarkar sarkar da aka rage. Saboda haka, a cikin tsari na alkalinine kamar kayan wanka ko kayan gini, madadin polmers ko mai kwazo akan HEC.
GASKIYA C8anyawa PHLRAL
Abubuwa da yawa na iya tasiri kan kwanciyar hankali na HEC:
Digiri na musanyawa (DS): HEC tare da mafi girma DS ya zama mafi tsoratar da fanniborgesan ƙungiyoyi masu ƙarfi tare da haɓakar ƙwayoyin cuta, wanda ke haɓaka ƙarancin ruwa da rasuwa ga hydrolysis.
Zazzabi ɗaya: yanayin zafi na iya hanzarta halayen sunadarai, gami da hydrolysis. Saboda haka, kula da dacewa da dacewar ajiya da aikin sarrafa aiki yana da mahimmanci don kiyaye lafiyar PH na tsarinsa na Hec-dauke da tsari.
Ionic karfi: Babban taro na salts ko wani ions a cikin tsari na iya haifar da kwanciyar hankali ta HEC ta hanyar yin amfani da suli da kwayoyin da kwayoyin halittar ruwa. Ionic ya kamata a inganta ƙarfin haɓaka don rage tasirin yanayi.
Adddidi: Haɗuwa da ƙari kamar Surfacts, ko wakilai masu bufika na iya tasiri kan yanayin kwanciyar hankali na PH na HEC. Ya kamata a gudanar da gwajin dacewa don tabbatar da ƙari ga jituwa da kwanciyar hankali.
Aikace-aikace da Tsarin Tsara
Fahimtar da kwanciyar hankali na PH na HEC yana da mahimmanci ga abubuwan da aka tsara a cikin masana'antu daban-daban.
Anan akwai wasu takamaiman ayyukan aikace-aikacen:
Abubuwan Kulawa na Kulawa: A cikin Shamfuos, Yanada, da Lotions, suna riƙe da ph a cikin kewayon da ake so (yawanci a kusa da tsaka-tsaki) yana tabbatar da kwanciyar hankali da wakilin dakatarwa.
Ana amfani da magunguna: HEC ana amfani da HEC a cikin dakatarwar baki, mafita na ophthalmic, da kuma irin hali. Ya kamata a tsara tsari kuma an adana su a karkashin yanayin da ke kiyaye zaman lafiyar HEC don tabbatar da ingancin samfuri da shiryayye rayuwa.
Coatings da Paints: HEC suna aiki a matsayin mai son rheorner da tsinkaye a cikin ruwan sama-ruwa da sutturar ruwa. Progulators dole ne bi da bukatun ph tare da sauran ka'idojin aikin kamar danko, matakin, da samar da fim.
Abubuwan Gidaje: A cikin Cucefious formulations, Hec yana aiki azaman wakilin riƙewar riƙe ruwa da inganta aiki. Koyaya, yanayin alkaline a cikin ciminti na iya kalubalanci kwanciyar hankali HAL, wanda ya wajaba da daidaitawa da hankali da gyara tsari.
Sellululose na Slallulose (HEC) yana ba da mahimmanci mai mahimmanci na rheology da aiki a aikace-aikace daban-daban. Fahimtar kwanciyar hankali na PH yana da mahimmanci ga masu tsara don haɓaka tsayayyen tsari da ingantaccen tsari. Duk da yake HEC ya nuna kyakkyawan kwanciyar hankali a karkashin yanayin tsaka-tsaki, da za a yi la'akari da al'adun acidic da alkaline don hana lalata da tabbatar da ingantaccen aiki. Ta hanyar zaɓar yanayin sa ya dace, sigogin tsara tsarin, da aiwatar da yanayin ajiya mai dacewa, waɗanda za su iya lalata fa'idodin HEC a fa'idodin mahalli da yawa.
Lokaci: Mar-2024