He laʻana cellulose ether

Cellulose eteraʻO ka laʻana he pūhui polymer i hana ʻia me ka cellulose me kahi ʻano ether. Loaʻa i kēlā me kēia apo glucose i loko o ka macromolecule cellulose ʻekolu mau pūʻulu hydroxyl, ka pūʻulu hydroxyl mua ma ke ono kalapona ʻātoma, a me ka pūʻulu hydroxyl lua ma ka lua a me ke kolu o nā ʻātoma kalapona. Hoʻololi ʻia ka hydrogen i loko o ka hui hydroxyl e ka hui hydrocarbon e hana i ka cellulose. ʻO ia ka huahana o ka hoʻololi ʻana o ka hydroxyl hydrogen e ka hui hydrocarbon i ka polymer cellulose. ʻO ka Cellulose kahi pūhui polyhydroxy polymer ʻaʻole i hoʻoheheʻe ʻia a hoʻoheheʻe ʻia. Hiki ke hoʻoheheʻe ʻia ka cellulose i ka wai, hoʻoheheʻe i ka hopena alkali a me ka mea hoʻoheheʻe organik ma hope o ka etherification, a loaʻa iā ia nā waiwai thermoplastic.

ʻO ka cellulose ether ka huaʻōlelo maʻamau o kahi ʻano huahana i hana ʻia e ka hopena o ka cellulose alkali a me ka etherifying agent ma lalo o kekahi mau kūlana. Hoʻololi ʻia ka cellulose alkali e nā mea etherifying ʻokoʻa e loaʻa ai nā ether cellulose ʻokoʻa.

E like me ka ionization waiwai o substituents, cellulose ethers laʻana hiki ke maheleia i ionic (e like me carboxymethyl cellulose) a me ka ole-ionic (e like me methyl cellulose) elua waeʻano.

E like me ke ʻano o ka mea pani,cellulose ethersHiki ke hoʻokaʻawale ʻia ka laʻana i ka etera hoʻokahi (e like me ka methyl cellulose) a me ka ether i hui pū ʻia (e like me ka hydroxypropyl methyl cellulose). E like me ka solubility, hiki ke hoʻokaʻawale ʻia i ka wai hoʻoheheʻe (e like me ka hydroxyethyl cellulose) a me ka solubility mea hoʻoheheʻe kūlohelohe (e like me ka ethyl cellulose). Hoʻohana nui ka mortar maloʻo i ka wai-soluble cellulose, hiki ke hoʻokaʻawale ʻia i ke ʻano hoʻoheheʻe wikiwiki a me ke ʻano dissolving lohi ma hope o ka mālama ʻana i ka ʻili.

He kuleana koʻikoʻi nā admixtures i ka hoʻomaikaʻi ʻana i nā waiwai o ka mortar maloʻo-mixed a ʻoi aku ma mua o 40% o ke kumu kūʻai o ka mortar maloʻo. Hāʻawi ʻia kahi ʻāpana nui o ka admixture i ka mākeke kūloko e nā mea hana haole, a hāʻawi pū ʻia ka dosage kuhikuhi o ka huahana e nā mea hoʻolako. ʻO ka hopena, ʻoi aku ka kiʻekiʻe o ke kumukūʻai o nā huahana mortar maloʻo, a he paʻakikī ke hoʻolaha ʻana i ka mortar masonry maʻamau a me ka plastering mortar me ka nui a ākea. Hoʻomalu ʻia nā huahana mākeke kiʻekiʻe e nā ʻoihana ʻē aʻe, nā mea hana mortar maloʻo i nā waiwai haʻahaʻa, nā kumu kūʻai maikaʻi ʻole; Loaʻa ka noiʻi ʻana o ka admixture i ka ʻōnaehana a me ka noiʻi ʻimi ʻia, e hahai makapō i nā formulations haole.

ʻO ka mea hoʻopaʻa wai ka mea hoʻohui nui e hoʻomaikaʻi ai i ka hana paʻa ʻana o ka wai o ka mortar maloʻo maloʻo a ʻo kekahi o nā mea hoʻohui nui e hoʻoholo ai i ke kumu kūʻai o ka mortar maloʻo maloʻo. ʻO ka hana nui o ka cellulose ether ka mālama ʻana i ka wai.

ʻO ke ʻano hana o ka cellulose ether i ka mortar penei:

(1) mortar i cellulose etera i hoʻoheheʻe ʻia i loko o ka wai, no ka mea, ʻo ka ʻili o ka ʻili e hoʻopaʻa pono i nā mea gelled i ka hāʻawi like ʻana i ka ʻōnaehana, a me ka cellulose etera e like me ke ʻano o ka colloid pale, "paʻi" paʻa ʻāpana, a ma kona ʻili waho e hana i kahi papa o ka lubrication film, ʻoi aku ka paʻa o ka ʻōnaehana slurry, a hoʻomaikaʻi hoʻi i ke kaʻina hana o ka wai.

(2)Cellulose eteraʻO ka hopena ma muli o kāna mau hiʻohiʻona molekala ponoʻī, no laila ʻaʻole maʻalahi ka nalo ʻana o ka wai i loko o ka mortar, a hoʻokuʻu mālie ʻia i kahi manawa lōʻihi, e hāʻawi ana i ka paʻa wai maikaʻi a me ka hana.