IHydroxyethylcellulose (HEC) i-non-ionic, i-polymer enyibilikayo emanzini ephuma kwi-cellulose. Iqhele ukusetyenziswa kumashishini ahlukeneyo afana namayeza, izinto zokuthambisa, ukutya, kunye neemveliso zokhathalelo lomntu ngenxa yokuqina kwayo, ukuzinzisa, kunye neempawu zegelling.
Ulwakhiwo lweMichiza yeHydroxyethylcellulose
I-HEC yipolymer ye-cellulose eguqulweyo, apho amaqela e-hydroxyethyl angeniswa kwi-cellulose backbone. Olu tshintsho luphucula ukunyibilika kwamanzi kunye nezinye iimpawu zeselulosi. Amaqela e-hydroxyethyl (-CH2CH2OH) ahlanganiswe ngokudibeneyo kumaqela e-hydroxyl (-OH) ye-molecule ye-cellulose. Olu hlengahlengiso luguqula izinto ezibonakalayo kunye neekhemikhali zeselulosi, zenze ukuba zilungele uluhlu olubanzi lwezicelo.
Iimpawu zokutsha
1. Ukutsha
I-cellulose ecocekileyo yinto enokutsha ngenxa yokuba iqukethe amaqela e-hydroxyl, angakwazi ukutsha. Nangona kunjalo, ukuqaliswa kwamaqela e-hydroxyethyl kwi-backbone ye-cellulose kuguqula iimpawu zayo zokutsha. Ubukho bamaqela e-hydroxyethyl bunokuchaphazela ukuziphatha kokutsha kwe-HEC xa kuthelekiswa neselulosi engalungiswanga.
2. Uvavanyo lokutsha
Uvavanyo lokutsha lubalulekile ukufumanisa iingozi zomlilo ezinxulumene nemathiriyeli. Iimvavanyo ezahlukeneyo ezisemgangathweni, ezifana ne-ASTM E84 (iNdlela yoVavanyo oluMiselweyo kwiiMpawu zokuBusa kuMphezulu weZixhobo zoKwakha) kunye ne-UL 94 (uMgangatho woKhuseleko lokutsha kweMpatho yePlastiki kwiiNdawo kwiZixhobo nakwiZixhobo), zisetyenziselwa ukuvavanya ukutsha kwezinto. Olu vavanyo luvavanya iiparamitha ezifana nokusasazeka kwedangatye, ukukhula komsi, kunye neempawu zokutshisa.
Imiba echaphazela ukutsha
1. Umxholo wokufuma
Ubukho bomswakama bunokuchaphazela ukutsha kwezinto. Iimathiriyeli zeCellulos zithande ukutsha kancinci xa zinemigangatho yokufuma ephezulu ngenxa yokufunxa ubushushu kunye nesiphumo sokupholisa samanzi. IHydroxyethylcellulose, ekubeni inyibilika emanzini, inokuba nezixa ezahlukeneyo zokufuma ngokuxhomekeke kwiimeko zokusingqongileyo.
2. Ubungakanani beNcam kunye noXinano
Ubungakanani besuntswana kunye nobuninzi bezinto eziphathekayo kunokuchaphazela ukutsha kwayo. Izinto ezihlulwe kakuhle ngokubanzi zinommandla ophezulu, okhuthaza ukutsha ngokukhawuleza. Nangona kunjalo, i-HEC isetyenziswa ngokuqhelekileyo kwifom yomgubo okanye i-granulated kunye nobukhulu beengqungquthela ezilawulwayo ukuhlangabezana neemfuno ezithile zesicelo.
3. Ubukho bezongezo
Kwizicelo ezisebenzayo, iifomyulwa ze-hydroxyethylcellulose zinokuqulatha izongezo ezinje ngeplastiki, izizinzi, okanye iiretardants zomlilo. Ezi zongezo zingatshintsha iimpawu zokutsha zeemveliso ezisekelwe kwi-HEC. Ngokomzekelo, ii-retardants zomlilo zinokucinezela okanye zilibazise ukutshisa kunye nokusasazeka kwamadangatye.
Iingozi zoMlilo kunye neNgqwalasela yoKhuseleko
1. Ukugcinwa kunye nokuphatha
Ukugcinwa ngokufanelekileyo kunye neendlela zokuphatha ziyimfuneko ukunciphisa umngcipheko weziganeko zomlilo. I-Hydroxyethyl cellulose kufuneka igcinwe kwindawo eyomileyo, nengena umoya kakuhle kude nemithombo enokuba khona yokutshisa. Kufuneka kuthathelwe ingqalelo ukuthintela ukuchanabeka kubushushu obugqithisileyo okanye ilanga elithe ngqo, elinokukhokelela ekuboleni okanye ekutshiseni.
2. Ukuthotyelwa kweMimiselo
Abavelisi kunye nabasebenzisi beemveliso ezine-hydroxyethylcellulose kufuneka bahambelane nemimiselo yokhuseleko olufanelekileyo kunye nemigangatho. Izigqeba ezilawulayo ezifana ne-Occupational Safety and Health Administration (OSHA) e-United States kunye ne-European Chemicals Agency (ECHA) kwi-European Union inikezela ngezikhokelo zokuphatha ngokukhuselekileyo kunye nokusetyenziswa kweekhemikhali.
3. Amanyathelo oNyango loMlilo
Kwimeko yomlilo obandakanya i-hydroxyethylcellulose okanye iimveliso eziqukethe i-HEC, amanyathelo afanelekileyo okunciphisa umlilo kufuneka aphunyezwe. Oku kunokuquka ukusebenzisa amanzi, ikharbon diokside, izicima-mlilo zeekhemikhali ezomileyo, okanye ugwebu, kuxhomekeka kubunjani bomlilo nendawo engqongileyo.
I-hydroxyethylcellulose yipolymer eselulosi elungisiweyo esetyenziswa rhoqo kumashishini ahlukeneyo ngenxa yokutyeba kunye nokuzinzisa iipropathi zayo. Nangona i-cellulose ecocekileyo inokutsha, ukuqaliswa kwamaqela e-hydroxyethyl kuguqula iimpawu zokutsha ze-HEC. Izinto ezinjengobumanzi, ubungakanani bamasuntswana, ukuxinana, kunye nobukho bezongezo bunokuphembelela ukutsha kweemveliso ezine-hydroxyethylcellulose. Ukugcinwa ngokufanelekileyo, ukuphatha, kunye nokuthotyelwa kwemimiselo yokhuseleko kubalulekile ukunciphisa iingozi zomlilo ezinxulumene ne-HEC. Uphando olongezelelweyo kunye novavanyo lunokuba yimfuneko ukuqonda ngokupheleleyo ukuziphatha okuvuthayo kwe-hydroxyethylcellulose phantsi kweemeko ezahlukeneyo kunye nokuqulunqwa.
Ixesha lokuposa: Apr-09-2024