Zithini iipropathi ze-hydroxypropyl methyl seluplose kunye ne-hydroxyytethy sellielse?

1.Gydroxypropyl Methyl Sellulose

Hydroxypropyl methylcelceluploseNgaba uninzi lweentlobo zeselfowuni zayo kunye nokusetyenziswa kwanda ngokukhawuleza. Yinto engeyiyo i-ionic ye-ionic ye-iether exutywe ye-ethet ye-cotton ehlaziyiweyo emva kokuqiniseka, usebenzisa i-propylene oxide kunye ne-methyl chloride njengearhente yokuphendula, ngokuphendula. Inqanaba lokufakwa endaweni yi-1.2 ~ 2.0. Iipropathi zayo ziyahluka kuxhomekeka kumyinge we-playxyl kumxholo we-hydroxypropy.

. Kodwa iqondo lokuhlaselwa layo lokuhlaselwa kwamanzi ashushu liphezulu kakhulu kune-methyl seluplose. Ukunyibilisela emanzini abandayo kuyaphuculwa kakhulu xa kuthelekiswa neMethyl Selelose.

. Ubushushu buchaphazela i-viscofity yayo, njengoko amaqondo obushushu ayanda, i-viscosity ihla. Nangona kunjalo, impembelelo yophawu lwayo oluphezulu kunye neqondo lobushushu lingaphantsi kune-methyl sellulose. Isisombululo sayo sizinzile xa sigcinwe kubushushu begumbi.

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. I-Caustic Soda kunye namanzi e-lime anempembelelo encinci ekusebenzeni kwayo, kodwa i-Alkali inokukhawulezisa inqanaba layo lokuchithwa kunye nokunyusa i-viscofity yayo. I-HydroxyPOpyl Methylcelcelcelose iZinzile kwi-SECTs eqhelekileyo, kodwa xa uxinzelelo lwesona sityibilili liphezulu, i-viscosity ye-hydroxypropyl methylcelses isisombululo sithanda ukunyuka kwesisombululo.

. Ezinjenge-polyvinyl utywala, i-starch ether, i-gum yemifuno, njl.

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2. Hydroxyyl seluplose

Yenziwe kwiCotton ehlaziyiweyo ephathwe ngeAlkali, kwaye yasabela kwi-Ethylene oxide njenge-Arhente ye-Etherropanol. Inqanaba layo lokufaka endaweni ye-1.5 ~ 2.0. Inombala oqinileyo kwaye kulula ukuyifumana ukufuma.

. Isisombululo sayo sizinzile kubushushu obuphakamileyo ngaphandle kweGelling. Ingasetyenziselwa ixesha elide phantsi kobushushu obuphakathi kudaka, kodwa ukugcinwa kwamanzi kwawo kusezantsi kune-methyl sellyulose.

(2)Hydroxyyl seluploseSizinzile kwi-acid jikelele kunye ne-alkali, kwaye uAlkali unokukhawulezisa ukutshitshiswa kwayo kunye nokunyusa i-viscofity yayo. Ukusasazeka kwawo ngamanzi kubi kakhulu kune-methyl seluplose kunye ne-hydroxypropyl methyl sethyulose.

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. Kwiqondo lobushushu malunga ne-40 ° C, i-mldew inokubakho ngeentsuku ezi-3 ukuya kwezi-5, eziya kuthi zichaphazele ukusebenza kwayo.