ʻO Thickener kahi ʻano rheological additive kūikawā, kāna hana nui e hoʻonui i ka viscosity o ka wai pena, hoʻomaikaʻi i ka hana mālama, hana hana a me ka hopena kiʻiʻoniʻoni pena o ka pena.
ʻO ke kuleana o nā mānoanoa i nā uhi
mānoanoa
Kūʻē i ka hoʻopaʻa ʻana
Paʻa wai
Anti-sagging
ʻAi i ka emi ʻana
E hoʻomaikaʻi i ka pono hoʻopuehu
E hoʻomaikaʻi i ka hana kūkulu
E hoʻonui i ka mānoanoa kiʻi pena
Hoʻonui i ka hopena o ka ʻili
Nā hiʻohiʻona o nā mānoanoa like ʻole
1. Manoanoa anoano
ʻO ka mea maʻamau ka bentonite organik, nona ka mea nui he montmorillonite.Hiki i kāna hana kūikawā lamellar ke hāʻawi i ka uhi me ka pseudoplasticity ikaika, thixotropy, paʻa paʻa a me ka lubricity.ʻO ke kumumanaʻo o ka mānoanoa ʻo ia ka pauka e hoʻomoʻa i ka wai a pehu i ka mānoanoa o ka wai, no laila aia kahi paʻa wai.
ʻO nā hemahema: ʻaʻole i maʻalahi ke kahe a me ka pae ʻana i ka hana, ʻaʻole maʻalahi e hoʻopuehu a hoʻohui.
2. Cellulose etera
ʻO ka mea maʻamau i hoʻohana ʻiahydroxyethyl cellulose(HEC), nona ka mana mānoanoa kiʻekiʻe, ka hoʻokuʻu maikaʻi ʻana, ka hoʻopuehu a me nā waiwai paʻa wai, ka mea nui no ka mānoanoa o ka pae wai.
ʻO nā mea pōʻino: pili i ka pale wai o ka uhi ʻana, lawa ʻole ka hana anti-mold, a me ka hana pae maikaʻi ʻole.
3. ʻAlika
Hoʻokaʻawale ʻia nā mānoanoa Acrylic i ʻelua ʻano: acrylic alkali-swellable thickeners (ASE) a me associative alkali-swellable thickeners (HASE).
ʻO ke kumu mānoanoa o ka waikawa acrylic alkali-swellable thickener (ASE) ʻo ia ke hoʻokaʻawale i ka carboxylate ke hoʻololi ʻia ka pH i ka alkaline, no laila e kikoo ʻia ke kaulahao molekala mai kahi helical a hiki i ke koʻokoʻo ma o ka hoʻohuli electrostatic repulsion ma waena o nā ion carboxylate. , hoʻomaikaʻi i ka ʻO ka viscosity o ka pae wai.Loaʻa i kēia ʻano mānoanoa ka hana mānoanoa kiʻekiʻe, pseudoplasticity ikaika a me ka hoʻokuʻu maikaʻi.
Hoʻopuka ka hui ʻana o ka alkali-swellable thickener (HASE) i nā pūʻulu hydrophobic ma ke kumu o nā mānoanoa alkali-swellable mānoanoa (ASE).Pēlā nō, ke hoʻololi ʻia ka pH i ka alkaline, ʻo ka repulsion electrostatic like-sex ma waena o nā ion carboxylate e hoʻonui ʻia ke kaulahao molekala mai ke ʻano helical a hiki i ke ʻano koʻokoʻo, e hoʻonui ai i ka viscosity o ka pae wai;a hiki i nā hui hydrophobic i hoʻokomo ʻia ma ke kaulahao nui ke hui pū me nā ʻāpana latex e hoʻonui i ka viscosity o ka pae emulsion.
ʻO nā hemahema: ʻoluʻolu i ka pH, lawa ʻole ka kahe ʻana a me ka pae ʻana o ke kiʻi pena, maʻalahi e mānoanoa ma hope.
4. Polyurethane
ʻO ka polyurethane associative thickener (HEUR) he polymer hoʻoheheʻe wai ethoxylated polyurethane i hoʻololi ʻia i ka hydrophobically, nona ka mānoanoa hui non-ionic.Aia ʻekolu ʻāpana: base hydrophobic, chain hydrophilic a me base polyurethane.Hoʻonui ka waihona polyurethane i ka hopena pena, a paʻa ke kaulahao hydrophilic i ka pae wai.Hoʻopili ke kumu hydrophobic me nā hale hydrophobic e like me nā ʻāpana latex, surfactants, a me nā puaʻa., ka hana ʻana i ʻekolu-dimensional network structure, i mea e hoʻokō ai i ke kumu o ka mānoanoa.
Hoʻohālikelike ʻia ia e ka mānoanoa o ka pae emulsion, kahe maikaʻi a me ka hoʻokō ʻana i ka pae, ʻoi aku ka maikaʻi o ka mānoanoa a me ka mālama ʻana i ka viscosity paʻa, ʻaʻohe palena pH;a loaʻa iā ia nā pōmaikaʻi i ka pale ʻana i ka wai, gloss, transparency, etc.
ʻO nā mea pōʻino: i loko o ka ʻōnaehana viscosity haʻahaʻa a me ka haʻahaʻa, ʻaʻole maikaʻi ka hopena anti-settling ma ka pauka, a ua maʻalahi ka hopena mānoanoa e nā dispersants a me nā solvents.
Ka manawa hoʻouna: Dec-12-2022