Kusiyana pakati pa 1,2-propanediol ndi 1,3-propanediol mu zodzoladzola

Propylene glycol ndi chinthu chomwe nthawi zambiri mumachiwona pamndandanda wa zosakaniza zomwe zimagwiritsidwa ntchito tsiku ndi tsiku. Zina zimalembedwa kuti 1,2-propanediol ndipo zina zimalembedwa kuti1,3-propanediol, ndiye kusiyana kwake ndi kotani?
1,2-Propylene glycol, CAS No. 57-55-6, molecular formula C3H8O2, ndi mankhwala ophera tizilombo toyambitsa matenda, omwe amasakanikirana ndi madzi, ethanol ndi zinthu zambiri zosungunulira zachilengedwe. Ndi madzi okhuthala opanda mtundu omwe ali bwino, opanda fungo labwino komanso otsekemera pang'ono pa fungo labwino.
Ingagwiritsidwe ntchito ngati chonyowetsa mu zodzoladzola, mankhwala otsukira mano ndi sopo pamodzi ndi glycerin kapena sorbitol. Imagwiritsidwa ntchito ngati chonyowetsa ndi kulinganiza mu utoto wa tsitsi komanso ngati choletsa kuzizira.
1,3-Propyleneglycol, CAS No. 504-63-2, fomula ya molekyulu ndi C3H8O2, ndi madzi opanda mtundu, opanda fungo, amchere, okhuthala, amatha kusungunuka, kusungunuka, kusakanikirana ndi madzi, kusakanikirana mu ethanol, ether.
Itha kugwiritsidwa ntchito popanga mitundu yosiyanasiyana ya mankhwala, polyester PTT yatsopano, mankhwala osakaniza mankhwala ndi ma antioxidants atsopano. Ndi chinthu chopangira polyester yosakhuta, pulasitiki, surfactant, emulsifier ndi emulsion breaker.
Zonsezi zili ndi njira yofanana ya mamolekyu ndipo ndi ma isomers.
1,2-Propylene glycol imagwiritsidwa ntchito ngati mankhwala oletsa mabakiteriya kapena cholimbikitsira kulowa m'malo odzola pamlingo wapamwamba.
Pakakhala ndi mafuta ochepa, nthawi zambiri amagwiritsidwa ntchito ngati mafuta odzola kapena chotsukira.
Pakakhala ndi kuchuluka kochepa, ingagwiritsidwe ntchito ngati chosungunulira cha zosakaniza zogwira ntchito.
Kukwiya kwa khungu ndi chitetezo chake pamlingo wosiyanasiyana n'zosiyana kwambiri.
1,3-Propylene glycol imagwiritsidwa ntchito kwambiri ngati chosungunulira mu zodzoladzola. Ndi chosungunulira cha polyol chomwe chimathandiza zodzoladzola kulowa pakhungu.
Ili ndi mphamvu yonyowetsa khungu kuposa glycerin, 1,2-propanediol ndi 1,3-butanediol. Ilibe kuuma, kutentha, komanso mavuto okwiya.
Njira zazikulu zopangira 1,2-propanediol ndi izi:
1. Njira yothira madzi ya propylene oxide;
2. Njira yopangira ma oxidation mwachindunji ya propylene;
3. Njira yosinthira Ester; 4. njira yopangira glycerol hydrolysis.
1,3-Propylene glycol imapangidwa makamaka ndi:
1. Njira yamadzi ya Acrolein;
2. Njira ya ethylene oxide;
3. Njira yopangira Glycerol hydrolysis;
4. Njira ya tizilombo toyambitsa matenda.
1,3-Propylene glycol ndi yokwera mtengo kuposa 1,2-Propylene glycol.1,3-PropyleneGlycol ndi yovuta kupanga ndipo ili ndi phindu lochepa, kotero mtengo wake ukadali wokwera.
Komabe, mfundo zina zikusonyeza kuti 1,3-propanediol siikwiya kwambiri komanso siipweteka kwambiri pakhungu poyerekeza ndi 1,2-propanediol, ngakhale kufika pamlingo wopanda vuto lililonse.
Chifukwa chake, m'zaka zaposachedwa, opanga ena asintha 1,2-propanediol ndi 1,3-propanediol mu zosakaniza zodzikongoletsera kuti achepetse kusasangalala komwe kungachitike pakhungu.
Kusasangalala pakhungu komwe kumachitika chifukwa cha zodzoladzola sikungayambitsidwe ndi 1,2-propanediol kapena 1,3-propanediol yokha, komanso kungayambitsidwe ndi zinthu zosiyanasiyana. Pamene lingaliro la anthu pankhani ya thanzi ndi chitetezo cha zodzoladzola likukulirakulira, kufunikira kwakukulu kwa msika kudzalimbikitsa opanga ambiri kupanga zinthu zabwino kuti akwaniritse zosowa za okonda kukongola ambiri!