Yintoni iHydroxypropyl Starch Etere?

IHydroxypropyl starch ether (HPS) sisitatshi esilungisiweyo esiye saduma ngakumbi kumashishini ahlukeneyo njenge-agent ejiyayo, yokuzinzisa, kunye ne-emulsifying. I-derivative ye-carbohydrate e-soluble yamanzi ephuma kwi-corn yendalo, iitapile, okanye i-tapioca starch ngokusebenzisa inkqubo yokuguqulwa kwemichiza ebandakanya ukuqaliswa kwamaqela e-hydroxypropyl kwii-molecule ze-starch.

Ukusetyenziswa kwe-HPS kuye kwaduma kwishishini lokutya njengoko liphucula ukuthungwa, ukuvakala komlomo, kunye nobomi beshelufu bezinto ezininzi zokutya. Idla ngokusetyenziswa kwiisuphu, iisosi, iigravies, iipuddings, kunye nezinye iimveliso ezifuna ukujiya okanye ukuzinzisa. I-HPS ikwasetyenziswa kwishishini loxubo-mayeza ukuphucula ukuhanjiswa kweziyobisi, nakwizinto zokuthambisa kunye neemveliso zokhathalelo lomntu ezifana neeshampu, izinto zokuthambisa, kunye neekhrimu.

Kweli nqaku, siza kuphonononga iipropathi, inkqubo yokuvelisa, usetyenziso, kunye nokuqwalaselwa kokhuseleko lwe-HPS.

Iipropati zeHydroxypropyl Starch Etere

IHydroxypropyl starch ether ngumgubo omhlophe, ongenavumba, nongenancasa onyibilika kakhulu emanzini nakwezinye izinyibilikisi zepolar. Inobunzima be-molecular ukusuka kwi-1,000 ukuya kwi-2,000,000 Daltons, kuxhomekeke kwinqanaba lokutshintshwa kwamaqela e-hydroxypropyl. Iqondo lokutshintsha (DS) libhekiselele kumndilili wenani lamaqela e-hydroxypropyl ngokweyunithi ye-anhydroglucose (AGU) kwi-molecule ye-starch. I-DS ephezulu iphumela kwi-hydrophilic ngakumbi kunye ne-water-soluble HPS molekyuli.

I-HPS ifumaneka kumabakala ahlukeneyo, kuxhomekeke kwi-viscosity yayo, ubungakanani bamasuntswana, kunye nezinye iimpawu. I-viscosity ye-HPS idla ngokubonakaliswa ngokuhambelana ne-Brookfield viscosity yayo, elinganiswa nge-centipoise (cP) kwizinga elithile lokucheba kunye nobushushu. Amanqanaba aphezulu e-viscosity e-HPS asetyenziselwa iimveliso ezityebileyo, ngelixa amanqanaba asezantsi e-viscosity asetyenziselwa iimveliso ezibhityileyo.

Ubungakanani be-particle ye-HPS nayo iyipropati ebalulekileyo, njengoko ichaphazela i-dispersibility yayo kunye nokuhamba kwayo. I-HPS ifumaneka ngobukhulu bamasuntswana ahlukeneyo, ukusuka kumgubo ocolekileyo ukuya kwigranules, kuxhomekeke kwisicelo.

Inkqubo yokuVelisa iHydroxypropyl Starch Etere

Ukuveliswa kwe-HPS kubandakanya ukuguqulwa kwesitashi sendalo usebenzisa i-reaction phakathi kwe-starch kunye ne-propylene oxide (PO), eyazisa amaqela e-hydroxypropyl kwii-molecule ze-starch. Inkqubo idla ngokuqhutyelwa kwisisombululo se-alkaline enamanzi, kunye nokongezwa kwe-catalyst efana ne-sodium hydroxide okanye i-potassium hydroxide.

Inkqubo yokuguqulwa iphenjelelwa zizinto ezininzi, ezifana nexesha lokuphendula, ubushushu, i-pH, umlinganiselo we-PO / isitashi, kunye noxinzelelo lwe-catalyst. Ezi zinto zichaphazela iqondo lokutshintshwa, ubunzima bemolekyuli, kunye nezinye iipropathi zemveliso ye-HPS.

Isitashi esilungisiweyo siyahlanjwa, singathathi hlangothi, kwaye somiswe ukuze sifumane umgubo omhlophe okanye iigranules. Imveliso ye-HPS emva koko ivavanyelwa iipropati ezahlukeneyo ezifana ne-viscosity, ubungakanani bamasuntswana, umxholo wokufuma, kunye nokucoceka.

Ukusetyenziswa kwe-Hydroxypropyl Starch Etere

Ukusetyenziswa kwe-HPS ekwakhiweni kunenzuzo ngeendlela ezahlukeneyo, ezifana nokuphucula amandla kunye nokuqina kwekhonkrithi, ukunciphisa umthamo wamanzi, kunye nokuphucula ukubambelela kunye nokudibanisa kweendonga. Ezinye zezicelo eziqhelekileyo ze-HPS kulwakhiwo zezi:

1. Ikhonkrithi:

I-HPS isetyenziswe kwikhonkrithi njengokunciphisa amanzi, okunciphisa ubungakanani bamanzi afunekayo kuyilo lomxube onikiweyo. Oku kubangela amandla aphezulu kunye nokuqina kwekhonkrithi, njengoko amanzi angaphezulu angenza buthathaka ikhonkrithi kwaye abangele ukuqhekeka kwe-shrinkage. I-HPS iphinda iphucule ukusebenza kunye nokuhamba kwekhonkrithi, enenzuzo kwiiprojekthi ezinkulu.

2. Udaka:

I-HPS isetyenziselwa udaka njengeplastiki, ephucula ukusebenza kunye nokuhambelana kodaka. Oku kubangela ukuba kubekho ubudlelwane obungcono phakathi kodaka kunye neeyunithi ze-masonry, okubalulekileyo kwingqibelelo yesakhiwo sesakhiwo. I-HPS ikwanciphisa umthamo wamanzi kumdaka, ophucula amandla ayo kunye nokuqina.

3. Iimveliso zeGypsum:

I-HPS isetyenziswa kwiimveliso zegypsum ezifana ne-plaster kunye ne-joint compound njenge-thickener kunye ne-stabilizer. Oku kubangela ukusetyenziswa okulula kunye nokuhambelana ngakumbi kweemveliso ze-gypsum, kunye nokuphucula ukubambelela kunye nokuhambelana. I-HPS iphinda iphucule ixesha lokumisela kunye namandla emveliso ye-gypsum, enenzuzo kwizicelo zokwakha.

Ukongeza kwezi zicelo zingentla, i-HPS inokusetyenziswa kwezinye izinto zokwakha ezifana nezaleko, izinto zokuncamathelisa, kunye nezitywini. Ukusetyenziswa kweHPS kulwakhiwo kunokuphucula umgangatho, ukusebenza kakuhle, nokuzinza kweeprojekthi zokwakha, kunye nokunciphisa iindleko kunye nenkcitho.