Paʻa wai ocellulose ethers
ʻO ka paʻa ʻana o ka wai o ka mortar e pili ana i ka hiki o ka mortar ke hoʻopaʻa a paʻa i ka makū. ʻO ke kiʻekiʻe o ka viscosity o cellulose ether, ʻoi aku ka maikaʻi o ka paʻa ʻana o ka wai. No ka mea, aia i loko o ka hale cellulose nā paʻa hydroxyl a me ka ether, ua pili ka oxygen atom ma ka hydroxyl a me ka hui paʻa eter me ka mole wai e hana i nā paʻa hydrogen, i lilo ai ka wai manuahi i wai paʻa a makani i ka wai, pēlā e pāʻani ai i ka hana o ka wai. ka paa ana.
Solubility ocellulose etera
1. Hoʻopuehu maʻalahi ka cellulose etera i loko o ka wai me ka ʻole o ka hoʻohui ʻana, akā lohi loa ka hoʻoheheʻe ʻana.Cellulose ethersma lalo o 60 mesh e hoʻoheheʻe ʻia i ka wai no kahi o 60 mau minuke.
2. Hoʻopuehu maʻalahi nā ʻāpana maikaʻi o ka cellulose ether i loko o ka wai me ka ʻole o ka agglomeration, a ʻoi aku ka haʻahaʻa o ka hemo ʻana. ʻOi aku ma mua o 80 meshcellulose eterahoʻoheheʻe ʻia i ka wai no kahi o 3 mau minuke.
3. Hoʻopuehu koke ka cellulose ether ultra-fine i loko o ka wai, hoʻoheheʻe wikiwiki, a hana i ka viscosity wikiwiki. ʻOi aku ma mua o 120 meshcellulose eterahoʻoheheʻe ʻia i ka wai no kahi 10-30 kekona.
ʻOi aku ka maikaʻi o nā ʻāpana o ka cellulose ether, ʻoi aku ka maikaʻi o ka mālama ʻana i ka wai. ʻO ka ʻili o ka ʻiliCellulose Etera HEMChoʻoheheʻe koke ʻia ma hope o ka pili ʻana me ka wai a hana i kahi ʻano gel. Hoʻopili ka glue i ka mea e pale ai i nā molekala wai mai ka hoʻomau ʻana i ke komo ʻana, a i kekahi manawa ʻaʻole hiki ke hoʻopuehu like ʻia a hoʻoheheʻe ʻia ma hope o ka manawa lōʻihi o ka hoʻonāukiuki ʻana, e hana ana i kahi hopena flocculent turbidized a i ʻole caking. Hoʻopuehu koke nā ʻāpana maikaʻi a hoʻoheheʻe i ka hui ʻana me ka wai e hana i kahi viscosity like.
ʻO ka aeration o ka cellulose ether
ʻO ka aeration o cellulose ether ka mea nui no ka cellulose ether kekahi ʻano surfactant, a ʻo ka hana interfacial o cellulose ether ka mea nui ma ke kinoea-wai-paʻa interface, mua ma ka hoʻokomo ʻana i nā ʻōhū, a ukali ʻia e ka hoʻopuehu a me ka pulu. Loaʻa nā pūʻulu alkyl i nā cellulose ethers, kahi e hoʻemi nui ai i ka neʻe ʻana o ka ʻili a me ka ikehu interfacial o ka wai, e hana maʻalahi ai ka hoʻonā wai i nā ʻōhū liʻiliʻi liʻiliʻi i ka wā o ka hoʻonāukiuki.
Gelatinicity o cellulose ethers
Ma hope o ka hoʻoheheʻe ʻia ʻana o ka cellulose ether i loko o ka mortar, ʻo ka hui methoxy a me ka hui hydroxypropyl ma ke kaulahao mole e hui pū me ka calcium a me nā ion alumini i loko o ka slurry e hana i kahi gel viscous a hoʻopiha i ka hakahaka o ka mortar sima, e hoʻomaikaʻi i ka densification o ka. mortar a pāʻani i ke kuleana o ka hoʻopiha a me ka hoʻoikaika ʻana. Eia nō naʻe, ke kaomi ʻia ka matrix composite, ʻaʻole hiki i ka polymer ke pāʻani i kahi kūlana kākoʻo paʻa, no laila e emi ka ikaika a me ka hoʻopili ʻana i ka lakene o ka mortar.
Nā waiwai hana kiʻiʻoniʻoni o cellulose ether
Hoʻokumu ʻia kahi kiʻi ʻoniʻoni latex ma waena o ka cellulose ether a me nā ʻāpana sima ma hope o ka hydration, kahi hopena sealing a hoʻomaikaʻi i ka maloʻo ʻana o ka lepo. Ma muli o ka paʻa maikaʻi ʻana o ka wai o ka cellulose ether, ua mālama ʻia nā molekole wai i loko o ka pahu, i mea e hōʻoia ai i ka hydration a me ka paʻakikī o ka sima a me ka hoʻomohala piha ʻana o ka ikaika, e hoʻomaikaʻi i ka ikaika paʻa o ka mortar, a hoʻomaikaʻi i ka cohesiveness o ka mortar, no laila, i ka mortar i maikai plasticity a me ka maʻalahi, a hoemi i ka shrinkage deformation o ka mortar.
Ka manawa hoʻouna: Mar-12-2024