Cellulose Ethers yog dab tsi thiab Vim Li Cas Lawv Thiaj Siv?

Cellulose ethers yog dej-soluble polymers ua los ntawm cellulose, lub ntsiab yam ntxwv ntawm cov nroj tsuag. Muaj ntau ntau hom cellulose ethers, txhua tus muaj cov khoom tshwj xeeb uas ua rau lawv zoo tagnrho rau ntau yam kev siv.

Cov qib txuj ci ntawm cellulose ethers yog siv rau hauv txhua yam ntawm cov tshuaj thiab tshuaj pleev ib ce rau kev tsim kho thiab textile manufacturing. Tsis tas li ntawd, lawv tau siv los ua cov khoom noj khoom haus thiab cov thickeners hauv cov xim thiab coatings.

Hom cellulose ethers

Peb hom cellulose ethers feem ntau yog hydroxypropylmethylcellulose (HPMC), methylhydroxyethylcellulose (MHEC).

Vim nws muaj ntau yam, HPMC yog hom cellulose ether uas siv dav tshaj plaws. Nws muaj nyob rau hauv ntau qib nrog sib txawv molecular luj, qib hloov thiab viscosities. HPMC tuaj yeem siv rau hauv ob qho tib si acidic thiab alkaline daws, ua rau nws zoo tagnrho rau ntau yam kev siv.

MHEC zoo ib yam li HPMC tab sis muaj cov ntsiab lus qis dua hydroxypropyl. Piv rau HPMC, qhov kub ntawm gelation ntawm MHEC feem ntau yog siab dua 80 ° C, nyob ntawm seb cov ntsiab lus ntawm pawg thiab cov txheej txheem ntau lawm. MHEC feem ntau yog siv los ua thickener, binder, emulsion stabilizer lossis zaj duab xis qub.

Cellulose ethers muaj ntau yam siv vim lawv cov khoom tshwj xeeb. Qee qhov kev siv ntawm cellulose ethers muaj xws li:

Thickeners: Cellulose ethers tuaj yeem siv ua cov thickeners rau lubricants, adhesives, oilfield chemicals, zaub mov, tshuaj pleev ib ce, thiab tshuaj.

Binders: Cellulose ethers tuaj yeem siv los ua binders hauv cov ntsiav tshuaj lossis granules. Lawv txhim kho cov compressibility ntawm cov hmoov thaum tseem tswj cov khoom ntws zoo.

Emulsion Stabilizers: Cellulose ethers tuaj yeem ruaj khov emulsions los ntawm kev tiv thaiv cov coalescence los yog flocculation ntawm dispersed theem droplets. Qhov no ua rau lawv zoo tagnrho rau siv nyob rau hauv emulsion polymers xws li latex xim los yog adhesives.

Zaj duab xis yav dhau los: Cellulose ethers tuaj yeem siv los ua cov yeeb yaj kiab lossis txheej txheej ntawm qhov chaw. Lawv feem ntau siv hauv kev tsim kho xws li pobzeb lossis phab ntsa nplaum. Cov yeeb yaj kiab tsim los ntawm cellulose ethers feem ntau yog pob tshab thiab hloov tau, nrog cov dej noo zoo.