ʻO Stearic acid, a i ʻole octadecanoic acid, molecular formula C18H36O2, i hana ʻia e ka hydrolysis o nā momona a me nā aila a hoʻohana nui ʻia i ka hana ʻana i nā stearates. Hoʻoheheʻe ʻia kēlā me kēia gram i 21ml ethanol, 5ml benzene, 2ml chloroform a i ʻole 6ml carbon tetrachloride. He paʻa keʻokeʻo keʻokeʻo a i ʻole ka paʻa liʻiliʻi melemele liʻiliʻi, hiki ke hoʻopuehu ʻia i loko o ka pauka, me ka ʻala ʻala. I kēia manawa, lawe ʻia ka hapa nui o nā ʻoihana stearic acid mai nā ʻāina ʻē, ka hydrogenation i loko o ka aila paʻakikī, a laila hydrolysis distillation e hana i ka waikawa stearic.
Hoʻohana nui ʻia ka Stearic acid i nā mea hoʻonaninani, plasticizers plastic, mold release agents, stabilizers, surfactants, rubber vulcanisation accelerators, water repellents, polishing agents, metala kopa, metala mineral flotation agents, softeners, pharmaceuticals a me nā mea kūlohelohe ʻē aʻe. Hiki ke hoʻohana ʻia ka ʻakika Stearic ma ke ʻano he mea hoʻoheheʻe no nā puaʻa hiki ke hoʻoheheʻe ʻia i ka ʻaila, kahi mea hoʻoheheʻe peni peni, kahi mea hoʻoliʻi pepa wax, a me kahi emulsifier no ka glycerol stearate. Hoʻohana nui ʻia ʻo Stearic acid i ka hana ʻana i nā paipu plastik PVC, nā papa, nā profiles a me nā kiʻiʻoniʻoni, a he mea hoʻomaha wela no PVC me ka lubricity maikaʻi a me ka mālamalama maikaʻi a me ka hoʻopaʻa wela.
Hiki ke hoʻohana ʻia nā mono- a polyol esters o ka waikawa stearic e like me nā mea hoʻonaninani, non-ionic surfactants, plasticisers a pēlā aku. Hiki ke hoʻohana ʻia kona paʻakai metala alkali i loko o ka wai a ʻo ia kekahi o nā mea nui o ke kopa, aʻo nā paʻakai metala ʻē aʻe e hiki ke hoʻohana ʻia e like me ka wai repellents, lubricants, fungicides, paint additives a me PVC stabilisers.
Hōʻike ʻia ke kuleana o ka waikawa stearic i nā mea polymeric e kona hiki ke hoʻonui i ka paʻa wela. Hiki i nā mea polymer ke hoʻohaʻahaʻa a me ka oxidation i ka wā o ka hana wela kiʻekiʻe, e alakaʻi ana i ka emi ʻana o ka hana. Hiki i ka hoʻohui ʻana o ka waikawa stearic ke hoʻolohi i kēia kaʻina hana hoʻohaʻahaʻa a hōʻemi i ka haki ʻana o nā kaulahao mole, no laila e hoʻolōʻihi i ke ola lawelawe o ka mea. He mea koʻikoʻi kēia i ka hana ʻana i nā huahana kūpaʻa kiʻekiʻe e like me ka insulation wire a me nā ʻāpana automotive.
He mea lubricating maikaʻi loa ka waikawa Stearic ma ke ʻano he lubricant. I loko o nā mea polymer, hoʻemi ka stearic acid i ka friction ma waena o nā kaulahao mole, e ʻae i ka mea e kahe maʻalahi, pēlā e hoʻomaikaʻi ai i ka pono o ke kaʻina hana. He mea maikaʻi loa kēia no nā kaʻina hana e like me ka injection molding, extrusion a me ka calendering.
Hōʻike ka Stearic acid i kahi hopena plasticiser i nā mea polymeric, e hoʻonui ana i ka palupalu a me ka malleability o ka mea. ʻO kēia ka mea maʻalahi ke hoʻoheheʻe ʻia i nā ʻano like ʻole, me nā kiʻiʻoniʻoni, nā paipu a me nā kiʻi. Hoʻohana pinepine ʻia ka hopena plasticising o ka waikawa stearic i ka hana ʻana i nā ʻeke plastik, nā ʻeke plastik a me nā ipu plastik.
Hoʻopili pinepine ʻia nā mea polymeric i ka lawe ʻana i ka wai, hiki ke hoʻohaʻahaʻa i ko lākou mau waiwai a hoʻoulu i ka corrosion. ʻO ka hoʻohui ʻana i ka waikawa stearic e hoʻomaikaʻi i ka hoʻopaʻa ʻana o ka wai o ka mea, e ʻae iā ia e noho paʻa i nā wahi pulu. He mea koʻikoʻi kēia ma nā wahi e like me nā huahana waho, nā mea hana a me nā hale uila uila.
Kōkua ʻo Stearic acid e hōʻemi i ka hoʻololi kala o nā mea polymeric i ka UV a me ka wela. He mea koʻikoʻi kēia i ka hana ʻana i nā huahana paʻa kala e like me nā papa hoʻolaha waho, nā ʻāpana o loko a me nā lako waho.
Hana ʻo Stearic acid ma ke ʻano he anti-adhesive a kōkua kahe i nā mea polymeric. Hoʻemi ia i ka hoʻopili ʻana ma waena o nā molekala a hoʻomāmā i ka holo ʻana o nā mea, ʻoi aku ka nui o ka hana ʻana i ka injection. Hoʻonui kēia i ka huahana a hōʻemi i nā hemahema o ka huahana.
Hoʻohana ʻia ʻo Stearic acid ma ke ʻano he anti-caking agent i ka hana ʻana i nā mea hoʻohuihui e hōʻoia i ka hoʻopuehu like ʻana o nā mea momona. Kōkua kēia i ka hoʻomaikaʻi ʻana i ka maikaʻi a me ka lokahi o ka mea momona a hōʻoia i ka loaʻa ʻana o nā mea kanu i nā meaʻai kūpono.
Hoʻohana ʻia ʻo Stearic acid i nā ʻano like ʻole o ka ʻoihana a me nā noi mea kūʻai aku.
Ka manawa hoʻouna: Jun-05-2024
