E hoʻoholo i ka maikaʻi o ka hydroxypropyl methyl cellulose

I kēia manawahydroxypropyl carboxymethyl celluloseʻoi aku ka nui o ka mākeke kūʻai, ʻaʻole kaulike ke kumukūʻai, pehea e hoʻomaʻemaʻe koke ai i ka maikaʻi o ka hydroxypropyl methyl cellulose i lilo i pilikia koʻikoʻi! No laila pehea e hoʻoholo ai i ka maikaʻi o ka hydroxypropyl methylcellulose? ʻO ka mea mua e nānā i ke keʻokeʻo o ka hydroxypropyl cellulose; ʻOiai ʻaʻole hiki ke hoʻomaopopo ʻia ka keʻokeʻo inā kūpono ʻo HPMC no ka noi, akā i ke kaʻina hana, aia kekahi mau mea hana ʻino e hoʻohui i kahi mea keʻokeʻo, e hōʻino i kona ʻano. Akā ma ka ʻōlelo maʻamau, ʻoi aku ka maikaʻi o ka cellulose ether maikaʻi loa.

ʻO ka lua, e ʻike i ka fineness o hydroxypropyl methyl cellulose: hydroxypropyl carboxymethyl cellulose particle size o 80-100 mesh, 120 mesh emi, hydroxyethyl cellulose HECHPMC ma kahi o 100 mesh. ʻO ka HPMC no ka hapa nui o 60-80 mesh, ʻoi aku ka palupalu o ka methyl cellulose, ʻoi aku ka maikaʻi o ka hoʻopuehu ʻana.

ʻO ka hopena o ka māmā cellulose ether:HPMCe hoʻokomo i loko o ka wai e hoʻoheheʻe i ka colloid solution, ʻike i ke kiʻekiʻe o ka hoʻonā, ʻoi aku ka kiʻekiʻe o ka hoʻonā, ʻaʻole e hoʻoheheʻe i ka mea kemika.

Ke hoʻomehana ʻia ka mea kūʻai aku, e gelatinized a hoʻohui ʻia a hoʻoheheʻe ʻia. He hydrophobic a hiki ke hoʻoheheʻe ʻia i ka wai. ʻO ka ʻuala ka mea nui e hoʻopaʻa ai a me ka demulsification maka o ka pauka putty pale wai. ʻO kāna kumu kūʻai wai e like me kēia: I ke kaʻina o ka hoʻohui ʻana i ka wai a me ka hoʻoulu ʻana i ka pauka latex redispersible a me ka sima, e hoʻi mau ana ka pauka latex i ke ʻano emulsion kumu, a ua hoʻopuehu ʻia nā ʻāpana latex i loko o ka paʻi sima. Ma hope o ka hui ʻana o ka sima i ka wai, hoʻomaka ka hopena hydration, a hiki i ka hopena Ca (OH) 2 i ka saturation a hoʻoheheʻe i nā kristal, a i ka manawa like, hoʻokumu ʻia nā kristal ettringite a me ka calcium silicate hydrate colloids. Hoʻokomo ʻia nā ʻāpana Latex ma ka gel a me nā ʻāpana sima unhydrated. Me ka holomua o ka hydration hopena, hydration huahana e mahuahua ana, a me ka latex mau mea liilii e ohi i loko o ka nele o inorganic mea e like me ka sima, a hana i ka kokoke accumulation papa ma luna o ka ili o ka sima gel. Ma muli o ka emi lohi o ka wai maloʻo, ʻO nā ʻāpana latex i hoʻopaʻa paʻa ʻia i loko o nā gels a me nā voids condense e hana i kahi kiʻiʻoniʻoni hoʻomau, e hana ana i kahi hui ʻana o ka paʻi sima interpenetrating matrix, a hoʻopaʻa i ka paʻi sima me nā mea pauka ʻē aʻe.