Hydroxyethylcellulose (HEC) bụ polymer na-abụghị ionic, mmiri na-agbaze mmiri nke sitere na cellulose. A na-ejikarị ya na ụlọ ọrụ dị iche iche dị ka ọgwụ, ihe ịchọ mma, nri, na ngwaahịa nlekọta onwe onye n'ihi na ọ na-agba, na-eme ka ọ dị ike, na gelling.
Ọdịdị kemịkalụ nke Hydroxyethylcellulose
HEC bụ polymer cellulose gbanwetụrụ, ebe a na-ewebata otu hydroxyethyl n'ime ọkpụkpụ azụ cellulose. Nke a mgbanwe enhances mmiri solubility na ndị ọzọ Njirimara nke cellulose. Otu hydroxyethyl (-CH2CH2OH) jikọtara ọnụ na otu hydroxyl (-OH) nke molekul cellulose. Mgbanwe a na-agbanwe ọdịdị anụ ahụ na nke kemịkalụ nke cellulose, na-eme ka ọ dị mma maka ọtụtụ ngwa ngwa.
Njirimara ire ọkụ
1. Combustibility
Cellulose dị ọcha bụ ihe na-ere ọkụ n'ihi na ọ nwere ìgwè hydroxyl, nke nwere ike ịnweta combustion. Otú ọ dị, iwebata otu hydroxyethyl na ọkpụkpụ azụ cellulose na-agbanwe àgwà ọkụ ya. Ọnụnọ nke otu hydroxyethyl nwere ike imetụta omume combustion nke HEC ma e jiri ya tụnyere cellulose na-adịghị agbanwe agbanwe.
2. Nnwale ire ọkụ
Nnwale ọkụ dị oke mkpa iji chọpụta ihe egwu ọkụ metụtara ihe. A na-eji ule dị iche iche ahazi, dị ka ASTM E84 (Ule ule ọkọlọtọ maka njirimara ọkụ ọkụ nke ihe eji arụ ụlọ) na UL 94 (Standard for Safety of Flammability of Plastic Materials for Parts in Devices and Appliances), iji nyochaa ire ọkụ nke ihe. Nnwale ndị a na-enyocha oke dị ka mgbasa ọkụ, mmepe anwụrụ ọkụ, na njirimara mgbanye.
Ihe na-emetụta ire ọkụ
1. Ọdịnaya Ọdịnaya
Ọnụnọ nke mmiri nwere ike imetụta ire ọkụ nke ihe. Ihe ndị dị na cellulosic na-adịkarị ka ọkụ mgbe ha nwere oke mmiri dị elu n'ihi nnabata okpomọkụ na mmetụta dị jụụ nke mmiri. Hydroxyethylcellulose, ebe ọ na-agbaze mmiri, nwere ike ịnwe oke mmiri dị iche iche dabere na ọnọdụ gburugburu ebe obibi.
2. Oke urughuru na njupụta
Ogo urughuru na njupụta nke ihe nwere ike imetụta ire ọkụ ya. Ihe ndị a kewara nke ọma na-enwekarị ebe elu dị elu, nke na-akwalite ọkụ ọkụ ngwa ngwa. Agbanyeghị, a na-ejikarị HEC n'ụdị ntụ ntụ ma ọ bụ granulated nwere nha nha anya a na-achịkwa iji mezuo ihe achọrọ ngwa ngwa.
3. Ọnụnọ nke ihe mgbakwunye
N'ime ngwa bara uru, usoro hydroxyethylcellulose nwere ike ịnwe mgbakwunye dị ka plasticizers, stabilizers, ma ọ bụ ire ọkụ. Ihe mgbakwunye ndị a nwere ike gbanwee njirimara ire ọkụ nke ngwaahịa dabere na HEC. Dịka ọmụmaatụ, ndị na-egbochi ire ọkụ nwere ike ịkwụsị ma ọ bụ gbuo oge mgbanye na ịgbasa ọkụ.
Ihe ize ndụ ọkụ na echiche nchekwa
1. Nchekwa na njikwa
Usoro nchekwa na njikwa kwesịrị ekwesị dị mkpa iji belata ihe egwu nke ọkụ. Ekwesịrị ịchekwa Hydroxyethylcellulose n'ebe kpọrọ nkụ, ikuku na-ekuku nke ọma na-enweghị isi mmalite mgbanye. Ekwesịrị ịkpachapụ anya ka ọ ghara ikpughe oke okpomọkụ ma ọ bụ ìhè anyanwụ, nke nwere ike ibute ire ere ma ọ bụ mgbanye.
2. Nkwenye usoro iwu
Ndị nrụpụta na ndị ọrụ nke ngwaahịa nwere hydroxyethylcellulose ga-agbasorịrị ụkpụrụ na ụkpụrụ nchekwa dị mkpa. Ndị na-ahụ maka njikwa dịka nchekwa nchekwa na ahụike ọrụ (OSHA) dị na United States na European Chemicals Agency (ECHA) na European Union na-enye ntụzịaka maka njikwa na iji kemịkal dị mma.
3. Usoro nkwụsị ọkụ
Ọ bụrụ na ọkụ metụtara hydroxyethylcellulose ma ọ bụ ngwaahịa nwere HEC, a ga-emejuputa usoro nkwụsị ọkụ kwesịrị ekwesị. Nke a nwere ike ịgụnye iji mmiri, carbon dioxide, ọkụ ọkụ na-ekpo ọkụ, ma ọ bụ ụfụfụ, dabere n'ụdị ọkụ na gburugburu ebe obibi.
hydroxyethylcellulose bụ polymer cellulose gbanwetụrụ nke a na-ejikarị n'ụlọ ọrụ dị iche iche maka ihe na-eme ka ọ sie ike ma na-eme ka ọ kwụsie ike. Ọ bụ ezie na cellulose dị ọcha na-ere ọkụ, iwebata otu hydroxyethyl na-agbanwe àgwà ọkụ ọkụ nke HEC. Ihe ndị dị ka ọdịnaya mmiri, nha urughuru, njupụta, na ọnụnọ nke mgbakwunye nwere ike imetụta ire ọkụ nke ngwaahịa nwere hydroxyethylcellulose. Nchekwa nke ọma, njikwa, na nrubeisi na iwu nchekwa dị mkpa iji belata ihe egwu ọkụ jikọtara na HEC. Nnyocha na nnwale ọzọ nwere ike ịdị mkpa iji ghọta nke ọma omume ire ọkụ nke hydroxyethylcellulose n'okpuru ọnọdụ na usoro dị iche iche.
Oge nzipu: Eprel-09-2024