ʻO ka Hydroxyethylcellulose (HEC) he polymer non-ionic, wai-soluble i loaʻa mai ka cellulose. Hoʻohana maʻamau ia i nā ʻoihana like ʻole e like me nā lāʻau lapaʻau, nā mea hoʻonaninani, nā meaʻai, a me nā huahana mālama pilikino ma muli o kona mānoanoa, hoʻopaʻa, a me nā waiwai gelling.
ʻO ke kinona o ka Hydroxyethylcellulose
He polymer cellulose i hoʻololi ʻia ʻo HEC, kahi i hoʻokomo ʻia ai nā hui hydroxyethyl ma ka iwi kuamoʻo cellulose. Hoʻonui kēia hoʻololi i ka hoʻoheheʻe wai a me nā waiwai ʻē aʻe o cellulose. Hoʻopaʻa ʻia nā hui hydroxyethyl (-CH2CH2OH) i nā pūʻulu hydroxyl (-OH) o ka mole cellulose. Hoʻololi kēia hoʻololi i nā waiwai kino a me nā kemika o ka cellulose, i kūpono ia no ka nui o nā noi.
Nā ʻano hiki ke hoʻā
1. Hoʻomāmā
ʻO ka cellulose maʻemaʻe kahi mea wela no ka mea aia nā pūʻulu hydroxyl, hiki ke hoʻopau ʻia. Eia nō naʻe, ʻo ka hoʻokomo ʻana o nā pūʻulu hydroxyethyl ma luna o ka iwi kuamoʻo cellulose e hoʻololi i kona mau ʻano flammability. Hiki i ka hele ʻana o nā pūʻulu hydroxyethyl ke hoʻopilikia i ke ʻano o ka puhi ʻana o HEC i hoʻohālikelike ʻia me ka cellulose unmodified.
2. Ho'āʻo Flammability
He mea koʻikoʻi ka hoʻāʻo ʻana i ka flammability no ka hoʻoholo ʻana i nā pōʻino ahi e pili ana i kahi mea. Hoʻohana ʻia nā hoʻokolohua like ʻole, e like me ASTM E84 (Standard Test Method for Surface Burning Characteristics of Building Materials) a me UL 94 (Standard for Safety of Flammability of Plastic Materials for Parts in Devices and Appliances), e loiloi i ka flammability o nā mea. Ke nānā nei kēia mau hoʻāʻo i nā ʻāpana e like me ka pālahalaha ʻana o ka lapalapa, ka ulu ʻana o ka uahi, a me nā ʻano ʻā.
Nā mea e pili ana i ka hiki ʻana o ke ahi
1. Māmā
Hiki i ke alo o ka makū ke hoʻololi i ka flammability o nā mea. ʻAʻole liʻiliʻi nā mea cellulosic i ka wā e loaʻa ai ke kiʻekiʻe o ka makū ma muli o ka wela a me ka hopena hoʻomaha o ka wai. ʻO ka Hydroxyethylcellulose, hiki ke hoʻoheheʻe ʻia i ka wai, hiki ke loaʻa i nā ʻano maʻamau ma muli o nā kūlana kaiapuni.
2. Ka nui a me ka mānoanoa
Hiki ke hoʻololi i ka nui o ka ʻāpana a me ka nui o kahi mea i kona hiki ke ʻā. ʻOi aku ka kiʻekiʻe o ka ʻili o nā mea i hoʻokaʻawale maikaʻi ʻia, e hoʻoikaika i ka puhi ʻana. Eia nō naʻe, hoʻohana maʻamau ʻo HEC i kahi ʻano pauka a i ʻole granulated me nā ʻāpana ʻāpana i hoʻomalu ʻia e hoʻokō i nā koi noi kikoʻī.
3. Loaʻa i nā mea hoʻohui
Ma nā hoʻohana pono, hiki ke loaʻa nā mea hoʻohui hydroxyethylcellulose e like me nā plasticizers, stabilizers, a i ʻole nā pale ahi. Hiki i kēia mau mea hoʻohui ke hoʻololi i nā hiʻohiʻona flammability o nā huahana HEC. No ka laʻana, hiki i nā mea pale ahi ke hoʻopaʻa a hoʻopaneʻe paha i ka ʻā a me ka laha ʻana o ke ahi.
Nā pōʻino ahi a me nā manaʻo palekana
1. Ka mālama ʻana a me ka mālama ʻana
Pono ka mālama pono ʻana a me ka mālama ʻana i nā hana e hōʻemi i ka pilikia o nā hanana ahi. Pono e mālama ʻia ka Hydroxyethylcellulose ma kahi maloʻo a maikaʻi ka ea ma kahi mamao mai nā kumu hoʻā. Pono e mālama i ka pale ʻana i ka wela nui a i ʻole ka lā pololei, hiki ke alakaʻi i ka palaho a i ʻole ka ʻā.
2. Hoʻokō hoʻoponopono
Pono nā mea hana a me nā mea hoʻohana i nā huahana hydroxyethylcellulose e hoʻokō i nā lula palekana kūpono a me nā kūlana. ʻO nā kino hoʻoponopono e like me ka Occupational Safety and Health Administration (OSHA) ma ʻAmelika Hui Pū ʻIa a me ka European Chemical Agency (ECHA) i ka European Union e hāʻawi i nā alakaʻi no ka mālama pono ʻana a me ka hoʻohana ʻana i nā kemika.
3. Nā ana i ke ahi
Inā he ahi e pili ana i ka hydroxyethylcellulose a i ʻole nā huahana i loaʻa iā HEC, pono e hoʻokō ʻia nā hana hoʻopau ahi kūpono. Hiki i kēia ke komo i ka hoʻohana ʻana i ka wai, carbon dioxide, nā mea hoʻopau kemika maloʻo, a i ʻole ka huʻa, e pili ana i ke ʻano o ke ahi a me ke kaiapuni a puni.
ʻO ka hydroxyethylcellulose kahi polymer cellulose i hoʻololi ʻia i hoʻohana mau ʻia i nā ʻoihana like ʻole no kona mānoanoa a hoʻopaʻa i nā waiwai. ʻOiai ʻo ka cellulose maʻemaʻe ke ahi, ʻo ka hoʻokomo ʻana o nā pūʻulu hydroxyethyl e hoʻololi i nā ʻano flammability o HEC. ʻO nā mea e like me ka moisture content, particle size, density, a me ka loaʻa ʻana o nā mea hoʻohui hiki ke hoʻopili i ka flammability o nā huahana hydroxyethylcellulose. ʻO ka mālama pono, ka mālama ʻana, a me ka mālama ʻana i nā lula palekana he mea nui ia e hoʻēmi i nā pōʻino ahi e pili ana me HEC. Pono paha ka noiʻi hou a me ka hoʻāʻo ʻana e hoʻomaopopo pono i ka ʻano flammability o hydroxyethylcellulose ma lalo o nā ʻano like ʻole a me nā ʻano hana.
Ka manawa kau: Apr-09-2024