Stearic acid, ma ọ bụ octadecanoic acid, usoro molekụla C18H36O2, bụ nke hydrolysis nke abụba na mmanụ na-emepụta, a na-ejikarị eme ihe na mmepụta nke stearates. A na-agbaze gram ọ bụla na ethanol 21ml, 5ml benzene, 2ml chloroform ma ọ bụ 6ml carbon tetrachloride. Ọ na-acha ọcha waxy transperent siri ike ma ọ bụ ubé odo odo waxy siri ike, nwere ike chụsasịa n'ime ntụ ntụ, dịtụ na butter isi. Ka ọ dị ugbu a, a na-ebubata ihe ka ukwuu n'ime mmepụta ụlọ nke ụlọ ọrụ stearic acid site na mmanụ nkwụ si mba ofesi, hydrogenation n'ime mmanụ siri ike, na mgbe ahụ, hydrolysis distillation iji mee stearic acid.
A na-eji stearic acid mee ihe na ịchọ mma, plastik plasticizers, ndị na-ahapụ ebu, stabilizers, surfactants, roba vulcanisation accelerators, mmiri na-egbochi mmiri, ndị na-eme ka mmiri na-egbuke egbuke, ncha ígwè, ndị na-ahụ maka mmiri na-efegharị ígwè, ihe nro, ọgwụ na ọgwụ ndị ọzọ. A pụkwara iji stearic acid mee ihe dị ka ihe mgbaze maka pigmenti na-agbaze mmanụ, ihe na-amịpụta crayon, onye na-eme ka akwụkwọ na-egbuke egbuke, na emulsifier maka glycerol stearate. A na-ejikwa stearic acid mee ihe n'ọtụtụ ebe n'ịrụpụta ọkpọkọ plastik PVC, efere, profaịlụ na ihe nkiri, ọ bụkwa ihe na-eme ka okpomọkụ maka PVC nwere ezigbo mmanu na ezigbo ọkụ na nkwụsị ọkụ.
Enwere ike iji Mono- ma ọ bụ polyol esters nke stearic acid dị ka ihe ịchọ mma, ndị na-abụghị ionic surfactants, plasticisers na ndị ọzọ. Nnu metal alkali ya na-agbaze n'ime mmiri ma bụrụ otu n'ime ihe ndị dị na ncha, ebe nnu ndị ọzọ nwere ike iji mee ihe na-eme ka mmiri, mmanụ aṅụ, fungicides, ihe mgbakwunye agba na PVC stabilisers.
A na-egosipụta ọrụ stearic acid na ihe polymeric site n'ikike ya iji kwalite nkwụsi ike nke okpomọkụ. Ihe ndị dị na polymer na-adịkarị mfe imebi na oxidation n'oge nhazi okpomọkụ dị elu, na-eduga n'ịdalata arụmọrụ. Mgbakwunye nke stearic acid nwere ike belata usoro mmebi a nke ọma ma belata nbibi nke ụdọ molekụla, si otú a na-agbatị ndụ ọrụ nke ihe ahụ. Nke a dị mkpa karịsịa n'ịmepụta ngwaahịa ndị na-ekpo ọkụ dị elu dị ka mkpuchi waya na akụrụngwa ụgbọ ala.
Stearic acid nwere ezigbo mmanu mmanu ka mmanu mmanu. N'ime ihe ndị polymer, stearic acid na-ebelata esemokwu n'etiti ụdọ molekụla, na-ekwe ka ihe ahụ na-asọba ngwa ngwa, si otú a na-eme ka arụmọrụ nke usoro ahụ dịkwuo mma. Nke a bara ezigbo uru maka usoro mmepụta dị ka ịkpụzi injection, extrusion na calendering.
Stearic acid na-egosipụta mmetụta plasticiser na ihe polymeric, na-abawanye nro na adịghị ike nke ihe ahụ. Nke a na-eme ka ihe dị mfe ịkpụzi n'ụdị dị iche iche, gụnyere ihe nkiri, tubes na profaịlụ. A na-etinyekarị mmetụta plasticising nke stearic acid na mmepụta nke nkwakọ ngwaahịa rọba, akpa rọba na akpa rọba.
Ihe ndị dị na polymer na-adịkarị mfe ịnweta mmiri, nke nwere ike imebi ihe onwunwe ha ma mee ka ọ ghara imebi. Mgbakwunye nke stearic acid na-eme ka mmiri na-ekpo ọkụ nke ihe ahụ dị mma, na-ekwe ka ọ nọgide na-eguzosi ike na gburugburu ebe mmiri. Nke a bụ isi ihe dị mkpa na mpaghara dịka ngwaahịa dị n'èzí, ihe owuwu ụlọ na ụlọ ngwaọrụ eletrọnịkị.
Stearic acid na-enyere aka belata mgbanwe agba nke ihe polymeric na UV na gburugburu ebe okpomọkụ. Nke a dị mkpa n'ịmepụta ngwaahịa kwụsiri ike na agba dị ka bọọdụ mgbasa ozi n'èzí, akụkụ ime ụgbọ ala na arịa ụlọ n'èzí.
Stearic acid na-arụ ọrụ dị ka mgbochi nrapado na ntinye aka na ihe polymeric. Ọ na-ebelata adhesion n'etiti ụmụ irighiri ihe ma na-eme ka ihe ahụ na-aga ngwa ngwa karị, karịsịa n'oge usoro ịkpụzi injection. Nke a na-eme ka arụpụta ọrụ dịkwuo mma ma na-ebelata ntụpọ na ngwaahịa ahụ.
A na-eji stearic acid mee ihe dị ka onye na-egbochi ime nri n'ichepụta fatịlaịza ngwakọta iji hụ na mgbasa nke irighiri fatịlaịza. Nke a na-enyere aka melite ogo na ịdị n'otu nke fatịlaịza ma hụ na osisi na-enweta nri kwesịrị ekwesị.
A na-eji Stearic acid mee ihe n'ọtụtụ ụlọ ọrụ mmepụta ihe na ngwa ndị ahịa.
Oge nzipu: Jun-05-2024
