AIsikhokelo esiBanzi se-HEC (i-Hydroxyethyl Cellulose)

1. Intshayelelo ngeHydroxyethyl Cellulose (HEC)

I-Hydroxyethyl Cellulose(HEC) i-polymer e-soluble yamanzi, i-non-ionic ephuma kwi-cellulose, i-polysaccharide yendalo efumaneka kwiindonga zeeseli zezityalo. Ngokuguqulwa kweekhemikhali-ukutshintsha amaqela e-hydroxyl kwi-cellulose kunye namaqela e-hydroxyethyl-i-HEC izuza ukunyibilika okuphuculweyo, ukuzinza kunye nokuguquguquka. Isetyenziswa ngokubanzi kuwo wonke amashishini, iHEC isebenza njengesongezo esibalulekileyo kulwakhiwo, amayeza, izinto zokuthambisa, ukutya, kunye neengubo. Esi sikhokelo siphonononga ikhemistri, iipropati, izicelo, iinzuzo, kunye neendlela ezizayo.

2. Ulwakhiwo lweMichiza kunye neMveliso

2.1 Ulwakhiwo lweMolekyuli

Umqolo we-HEC uqukethe i-β-(1→4)-edibeneyo ye-D-glucose iiyunithi, kunye ne-hydroxyethyl (-CH2CH2OH) amaqela athatha indawo ye-hydroxyl (-OH). Iqondo lokutshintshwa (DS), ngokuqhelekileyo i-1.5-2.5, inquma ukunyibilika kunye ne-viscosity.

2.2 Inkqubo yokudibanisa

I-HECiveliswa nge-alkali-catalyzed reaction of cellulose nge-ethylene oxide:

1. I-Alkalization: I-Cellulose iphathwa nge-sodium hydroxide ukwenza i-alkali cellulose.
2. I-Etherification: Yasabela nge-ethylene oxide ukwazisa amaqela e-hydroxyethyl.
3. I-Neutralization & Ukucocwa: I-Acid yenza i-alkali ingasebenzi; imveliso ihlanjwe kwaye yomiswe ibe ngumgubo ococekileyo.

3. IiPropati eziPhambili ze-HEC

3.1 Ukunyibilika kwamanzi

• Inyibilika emanzini ashushu okanye abandayo, yenze izisombululo ezicacileyo, ezicacileyo.
• Ubume be-non-ionic buqinisekisa ukuhambelana ne-electrolytes kunye nokuzinza kwe-pH (2-12).

3.2 Ukutyebisa kunye noLawulo lweRheology

• Isebenza njenge-pseudoplastic thickener: I-viscosity ephezulu ekuphumleni, ukunciphisa i-viscosity phantsi kwe-shear (umzekelo, ukumpompa, ukusabalalisa).
• Ibonelela ngokumelana ne-sag kwizicelo ezithe nkqo (umzekelo, izincamathelisi zethayile).

3.3 Ugcino lwamanzi

• Yenza ifilimu ye-colloidal, icotha ukuphuphuma kwamanzi kwiinkqubo ze-cementitious ukwenzela i-hydration efanelekileyo.

3.4 Ukuzinza kweThermal

• Igcina i-viscosity kuwo wonke amaqondo obushushu (-20°C ukuya ku-80°C), ilungele ukugquma kwangaphandle kunye nezinto ezincamathelayo.

3.5 Ukwenziwa kweFilimu

• Yenza iifilimu eziguquguqukayo, ezizinzileyo kwiipeyinti kunye nezithambiso.

4. Izicelo ze-HEC

4.1 Ishishini loKwakha

• I-Tile Adhesives & Grouts: Ukwandisa ixesha elivulekileyo, ukubambelela, kunye nokumelana ne-sag (0.2-0.5% idosi).
• I-Cement Mortars & Plasters: Ukuphucula ukusebenza kunye nokunciphisa ukuqhekeka (0.1-0.3%).
• Iimveliso zeGypsum: Ilawula ixesha lokumisela kunye nokunciphisa kwiikhompawundi ezidibeneyo (0.3-0.8%).
• Iinkqubo ze-Insulation zangaphandle (i-EIFS): Ukunyusa ukuqina kweengubo eziguqulwe nge-polymer.

4.2 Amachiza

• I-Tablet Binder: Yongeza ukudibanisa kweziyobisi kunye nokuchithwa.
• Izisombululo ze-Ophthalmic: Ithambisa kwaye iyajiya amathontsi amehlo.
• Ulwakhiwo oluLawulwayo lokuKhupha: Lulungisa amazinga okukhutshwa kwechiza.

4.3 Izinto zokuthambisa kunye noNonophelo lomntu

• I-Shampoos & Lotions: Ibonelela nge-viscosity kwaye izinzile emulsions.
• Iikrimu: Ukuphucula ukusasazeka kunye nokugcinwa komswakama.

4.4 Ishishini lokutya

• I-Thickener & Stabilizer: Isetyenziswa kwiisosi, kwiimveliso zobisi, kunye nezinto ezibhakiweyo ezingenagluten.
• I-Fat Substitute: I-Mimics texture ekutyeni okune-calorie ephantsi.

4.5 Iipeyinti kunye neeNgqungquthela

• I-Rheology Modifier: Ithintela ukuthontsiza kwipeyinti esekwe emanzini.
• I-Pigment Suspension: Izinzisa amasuntswana osasazo lombala.

4.6 Olunye Usetyenziso

• I-Oil Drilling Fluids: Ilawula ilahleko yolwelo kwiidaka zokomba.
• Ii-Inks zokuprinta: Ukulungelelanisa i-viscosity yoshicilelo lwesikrini.

5. Iinzuzo ze-HEC

• I-Multifunctionality: Idibanisa ukutyeba, ukugcinwa kwamanzi, kunye nokwenza ifilimu kwisongezo esinye.
• Iindleko-zobuchule: Idosi ephantsi (0.1–2%) inika uphuculo olubonakalayo lomsebenzi.
• I-Eco-Friendly: I-Biodegradable kwaye ithathwe kwi-cellulose ehlaziyiweyo.
• Ukuhambelana: Isebenza ngeetyuwa, ii-surfactants, kunye neepolima.

6. Iingqwalasela zobuGcisa

6.1 Izikhokelo zeDosage

• Ukwakhiwa: 0.1-0.8% ngobunzima.
• Izithambiso: 0.5-2%.
• Amachiza: 1-5% kwiipilisi.

6.2 Ukuxuba & Ukupheliswa

• Dibanisa kwangaphambili kunye nomgubo owomileyo ukukhusela i-clumping.
• Sebenzisa amanzi afudumeleyo (≤40 ° C) ukuchithwa ngokukhawuleza.

6.3 Ugcino

• Gcina kwizikhongozeli ezivaliweyo ku-<30°C kunye no-<70% wokufuma.

7. Imingeni kunye neMida

• Ixabiso: Ixabiso ngaphezui-methylcellulose(MC) kodwa ithetheleleka ngomsebenzi okwinqanaba eliphezulu.
• Ukutyeba ngokugqithisileyo: Ukugqithisa kwe-HEC kunokuthintela ukusetyenziswa okanye ukomisa.
• Ukuseta Ukubuyiswa: Kwisamente, kunokufuna i-accelerators (umzekelo, i-calcium formate).

8. Imizekelo

1. I-High-Performance Adhesives yeTayile: I-HEC-based adhesives e-Dubai Burj Khalifa imelana nokushisa kwe-50 ° C, ivumela ukubeka i-tile ngokuchanekileyo.
2. I-Eco-Friendly Paints: Uphawu lwaseYurophu lusebenzise i-HEC ukuba ithathe indawo ye-synthetic thickeners, ukunciphisa ukukhutshwa kwe-VOC nge-30%.

9. IiNdlela zekamva

• Green HEC: Imveliso evela kwinkunkuma yezolimo esetyenzisiweyo (umzekelo, amakhoba erayisi).
• I-Smart Materials: Iqondo lobushushu/i-pH esabelayo kwi-HEC yonikezelo lwechiza oluguqukayo.
• I-Nanocomposites: I-HEC idityaniswe nama-nanomaterials kwizinto zokwakha ezomeleleyo.

Umdibaniso owodwa we-HEC wokunyibilika, uzinzo, kunye nokuguquguquka kwenza ukuba ibe yimfuneko kuwo wonke amashishini. Ukusuka kwi-adhesives ye-skyscraper ukuya kumayeza okusindisa ubomi, ibhuloho ukusebenza kunye nokuzinza. Njengoko uphando luqhubela phambili,I-HECiya kuqhubeka iqhubela phambili ukuveliswa kwezinto ezintsha kwinzululwazi yezinto eziphathekayo, ibethelela indima yayo njengesiseko soshishino lwenkulungwane yama-21.

TDS KimaCell HEC HS100000