Qhov txawv ntawm HPMC E5 thiab E15 yog dab tsi?

HPMC (Hydroxypropyl Methylcellulose) yog ib hom cellulose ether siv ntau yam kev siv. Nws yog non-ionic, dej-soluble polymer muab los ntawm cellulose, thiab yog siv los ua ib tug thickening agent, emulsifier, stabilizer, thiab suspending agent. HPMC muaj nyob rau hauv ntau qib, txhua tus muaj nws tus kheej cov khoom tshwj xeeb. HPMC E5 thiab E15 yog ob qib uas siv ntau tshaj plaws ntawm HPMC.

HPMC E5 yog qib viscosity tsawg ntawm HPMC, nrog viscosity ntau ntawm 4.0-6.0 cps. Nws yog siv nyob rau hauv ntau yam kev siv, xws li coatings, adhesives, thiab sealants. Nws kuj tseem siv rau hauv cov khoom noj thiab tshuaj siv ua cov thickener, stabilizer, thiab suspending agent. HPMC E5 yog soluble hauv dej txias thiab kub, thiab yog sib xws nrog ntau yam organic solvents.

HPMC E15 yog qib siab viscosity ntawm HPMC, nrog viscosity ntau ntawm 12.0-18.0 cps. Nws yog siv nyob rau hauv ntau yam kev siv, xws li coatings, adhesives, thiab sealants. Nws kuj tseem siv rau hauv cov khoom noj thiab tshuaj siv ua cov thickener, stabilizer, thiab suspending agent. HPMC E15 yog soluble hauv dej txias thiab kub, thiab yog sib xws nrog ntau yam organic solvents.

Qhov sib txawv tseem ceeb ntawm HPMC E5 thiab E15 yog viscosity. HPMC E5 muaj qhov viscosity qis dua li HPMC E15, uas txhais tau hais tias nws tsis tshua muaj viscous thiab muaj qhov sib xws. Qhov no ua rau HPMC E5 zoo dua rau cov ntawv thov uas yuav tsum muaj qhov sib xws, xws li cov txheej thiab cov nplaum. HPMC E15, ntawm qhov tod tes, muaj viscosity ntau dua, uas ua rau nws zoo dua rau cov ntawv thov uas xav tau kom muaj qhov sib xws, xws li sealants thiab khoom noj khoom haus.

Ntxiv rau qhov sib txawv ntawm viscosity, HPMC E5 thiab E15 kuj txawv ntawm lawv cov solubility. HPMC E5 yog soluble hauv dej txias thiab kub, thaum HPMC E15 tsuas yog soluble hauv dej kub. Qhov no txhais tau hais tias HPMC E5 tuaj yeem siv rau hauv cov ntawv thov uas xav tau cov dej txias, thaum HPMC E15 zoo dua rau cov ntawv thov uas xav tau cov dej kub.

Thaum kawg, HPMC E5 thiab E15 kuj txawv ntawm lawv qhov sib xws nrog cov kuab tshuaj organic. HPMC E5 yog sib xws nrog ntau yam ntawm cov organic solvents, thaum HPMC E15 tsuas yog sib xws nrog ntau yam ntawm cov kuab tshuaj organic. Qhov no txhais tau hais tias HPMC E5 yog qhov zoo dua rau cov ntawv thov uas xav tau ntau yam ntawm cov kuab tshuaj organic, thaum HPMC E15 yog qhov zoo dua rau cov ntawv thov uas xav tau ntau yam ntawm cov kuab tshuaj organic.

Hauv kev xaus, HPMC E5 thiab E15 yog ob qib sib txawv ntawm HPMC, txhua tus muaj nws cov khoom tshwj xeeb. Qhov sib txawv tseem ceeb ntawm lawv yog cov viscosity, nrog HPMC E5 muaj qis dua viscosity dua HPMC E15. Tsis tas li ntawd, HPMC E5 yog soluble hauv dej txias thiab kub, thaum HPMC E15 tsuas yog soluble hauv dej kub. Thaum kawg, HPMC E5 tau sib xws nrog ntau yam ntawm cov kuab tshuaj organic, thaum HPMC E15 tsuas yog sib haum nrog qee qhov txwv ntawm cov kuab tshuaj organic.