CelluloSE ETHERS (MHEC)

Methyl hydroxyethyl cellulose(MHEC) bụ ụdị cellulose ether nke a na-ejikarị eme ihe na ụlọ ọrụ dị iche iche maka ihe ndị dị na ya. Nke a bụ nkọwa nke MHEC:

Nhazi:

MHEC bụ cellulose ether gbanwetụrụ nke sitere na cellulose site na usoro mmeghachi omume kemịkal. A na-akọwa ya site na ọnụnọ nke ma methyl na hydroxyethyl dị na ọkpụkpụ azụ cellulose.

Njirimara:

1. Mmiri Solubility: MHEC bụ soluble na mmiri oyi, na-emepụta ngwọta doro anya na viscous.
2. Thickening: Ọ na-egosipụta ihe ndị na-eme ka ọ dị oke mma, na-eme ka ọ baa uru dị ka onye na-agbanwe rheology n'ụdị dị iche iche.
3. Nhazi ihe nkiri: MHEC nwere ike ịmepụta ihe nkiri na-agbanwe agbanwe na nke na-ejikọta ọnụ, na-enye aka n'iji ya eme ihe na mkpuchi na nrapado.
4. Nkwụsi ike: Ọ na-enye nkwụsi ike na emulsions na nkwusioru, na-eme ka ndụ nchekwa nke ngwaahịa emepụtara.
5. Adhesion: A maara MHEC maka ihe eji eme ya, na-enye aka mee ka adhesion dị mma na ụfọdụ ngwa.

Ngwa:

1. Ụlọ ọrụ ihe owuwu:
   • Tile Adhesives: A na-eji MHEC mee ihe na nkedo tile iji melite arụmọrụ, njigide mmiri, na nrapado.
   • Mortars na Renders: A na-arụ ya n'ọrụ n'ụrọ ndị dabeere na ciment ma na-eme ka ọ dịkwuo mma njide mmiri na ịrụ ọrụ.
   • Ngwakọta nhazi nke onwe: A na-eji MHEC mee ihe na nhazi nke onwe ya maka ihe na-eme ka ọ sie ike na ịkwado ya.
2. Mkpuchi na agba:
   • A na-eji MHEC mee ihe na agba na mkpuchi mmiri dị ka ihe na-eme ka ọ dị arọ na ihe nkwụnye. Ọ na-enye aka mee ka brushability dị mma na arụmọrụ zuru oke nke mkpuchi.
3. Adhesives:
   • A na-eji MHEC mee ihe n'ụdị adhesives dị iche iche iji mee ka adhesions dịkwuo mma ma melite njirimara rheological nke usoro nrapado.
4. Ngwa ahịa ọgwụ:
   • N'ọgwụ ọgwụ, a na-eji MHEC dị ka ihe na-ekekọta, ihe na-agbasasị, na onye na-emepụta ihe nkiri n'ụdị mbadamba.

Usoro nrụpụta:

Mmepụta nke MHEC gụnyere etherification nke cellulose na ngwakọta nke methyl chloride na ethylene oxide. A na-achịkwa ọnọdụ ndị akọwapụtara na oke reagent iji nweta ogo ngbanwe achọrọ (DS) yana iji kwado njirimara nke ngwaahịa ikpeazụ.

Njikwa ogo:

A na-eji usoro njikwa mma, gụnyere usoro nyocha dị ka spectroscopy magnetik resonance (NMR), iji hụ na ogo ngbanwe dị n'ime oke a kapịrị ọnụ yana na ngwaahịa ahụ tozuru ụkpụrụ achọrọ.

MHEC dị iche iche na-eme ka ọ bụrụ ihe bara uru n'ụdị dịgasị iche iche, na-enye aka n'ịrụ ọrụ nke ọma na ihe owuwu ụlọ, mkpuchi, nrapado, na ọgwụ. Ndị nrụpụta nwere ike ịnye ọkwa dị iche iche nke MHEC iji gboo mkpa dị iche iche nke ụlọ ọrụ dị iche iche.