ʻO ka starch ether kahi huaʻōlelo maʻamau no ka papa o nā starches i hoʻololi ʻia i loaʻa nā paʻa ether i loko o ka mole, i ʻike ʻia ʻo ka starch etherified, i hoʻohana nui ʻia i ka lāʻau lapaʻau, meaʻai, textile, hana pepa, kemika i kēlā me kēia lā, petroleum a me nā ʻoihana ʻē aʻe. I kēia lā mākou e wehewehe nui i ke kuleana o ka starch ether i ka mortar.
Introduction to Starch Etera
ʻO nā mea maʻamau a hoʻohana pinepine ʻia ʻo ia ka starch potato, starch tapioka, starch kulina, starch wheat, a me nā mea ʻē aʻe.
ʻO ka starch kahi pūhui macromolecular polysaccharide i haku ʻia me ka glucose. ʻElua ʻano mole, linear a lālā, i kapa ʻia ʻo amylose (ma kahi o 20%) a me amylopectin (ma kahi o 80%). I mea e hoʻomaikaʻi ai i nā waiwai o ka starch i hoʻohana ʻia i nā mea kūkulu hale, hiki ke hoʻohana ʻia nā ʻano hana kino a me ke kemika e hoʻololi iā ia i mea e kūpono ai kāna mau waiwai no nā kumu like ʻole o nā mea hale.
Loaʻa i ka starch Etherified nā ʻano huahana like ʻole. E like me carboxymethyl starch ether (CMS), hydroxypropyl starch ether (HPS), hydroxyethyl starch ether (HES), cationic starch ether, etc.
ʻO ke kuleana o ka hydroxypropyl starch ether i ka mortar
1) E hoʻomoʻa i ka mortar, e hoʻonui i ka anti-sagging, anti-sagging a me nā waiwai rheological o ka mortar.
No ka laʻana, i ka hana ʻana i ka pahu tile, putty, a me ka hamo ʻana, ʻoi aku ka nui o kēia manawa e pono ai ka hoʻoheheʻe ʻana i ka mīkini i ka wai nui, e like me ka gypsum-based mortar, he mea koʻikoʻi loa ia (ʻo ka gypsum i hoʻoheheʻe ʻia i ka mīkini e koi ai i ka wai nui akā e hoʻoulu ai i ka sagging koʻikoʻi. , hiki i ka starch Etera ke hoʻoponopono i kēia hemahema).
Kūʻē pinepine ka wai a me ka pale ʻana, a ʻo ka hoʻonui ʻana i ka wai e alakaʻi i ka emi ʻana o ke kūpaʻa sag. Hiki i ka mortar me nā waiwai rheological ke hoʻoponopono maikaʻi i kēlā ʻano kūʻē, ʻo ia hoʻi, ke hoʻohana ʻia ka ikaika o waho, e emi ana ka viscosity, hoʻonui i ka hana a me ka pumpability, a i ka wā e hoʻihoʻi ʻia ai ka ikaika o waho, piʻi ka viscosity a hoʻomaikaʻi ʻia ke kūpaʻa sagging.
No ke ʻano o kēia manawa o ka hoʻonui ʻana i ka ʻāpana tile, hiki i ka hoʻohui ʻana i ka starch ether ke hoʻomaikaʻi i ka pale ʻana i ka paheʻe o ka tile adhesive.
2) Hoʻonui ʻia nā hola wehe
No nā tile tile, hiki iā ia ke hoʻokō i nā koi o nā tile kūikawā kūikawā (Class E, 20min i hoʻonuiʻia i 30min a hiki i ka 0.5MPa) e hoʻonui i ka manawa wehe.
Hoʻomaikaʻi ʻia nā waiwai o ka ʻili
Hiki i ka starch ether ke hana i ka ʻili o ka base gypsum a me ka mortar sima, maʻalahi e hoʻopili, a he hopena hoʻonaninani maikaʻi. He mea koʻikoʻi loa ia no ka hoʻopalapala ʻana i ka momi a me ka ʻāpana lahilahi o ka mīkini hoʻonaninani e like me ka putty.
ʻO ka hana o ka hydroxypropyl starch ether
Ke hoʻoheheʻe ʻia ka starch ether i ka wai, e hoʻopuehu like ʻia i loko o ka ʻōnaehana sima. No ka loaʻa ʻana o ka molela starch ether i kahi ʻano pūnaewele a hoʻopiʻi maikaʻi ʻia, e hoʻopaʻa ʻia ia i nā ʻāpana sima maikaʻi a lilo i alahaka hoʻololi e hoʻopili ai i ka sima, no laila e hāʻawi ai ʻO ka waiwai nui o ka slurry hiki ke hoʻomaikaʻi i ka anti-sag a i ʻole anti-slip. hopena.
ʻO ka ʻokoʻa ma waena o ka hydroxypropyl starch ether a me cellulose ether
1. Hiki i ka starch ether ke hoʻomaikaʻi maikaʻi i nā waiwai anti-sag a anti-slip o ka mortar
Hiki i ka cellulose ether ke hoʻomaikaʻi wale i ka viscosity a me ka paʻa ʻana o ka wai o ka ʻōnaehana akā ʻaʻole hiki ke hoʻomaikaʻi i nā waiwai anti-sagging a me nā anti-slip.
2. Ka mānoanoa a me ka viscosity
ʻO ka mea maʻamau, ʻo ka viscosity o cellulose ether ma kahi o ʻumi tausani, ʻoiai ʻo ka viscosity o ka starch ether he mau haneli a he mau tausani, akā ʻaʻole ia he manaʻo he waiwai ikaika ka starch etera, ʻoiai ʻo starch ether ʻaʻohe waiwai e komo i ka ea. .
5. ʻO ke ʻano molekula o ka cellulose ether
ʻOiai ʻo ka starch a me ka cellulose i haku ʻia i nā molekole glucose, ʻokoʻa kā lākou ʻano hana. ʻO ka hoʻonohonoho ʻana o nā molekala glucose a pau i loko o ka starch ua like ia, ʻoiai ʻo ka cellulose he ʻokoʻa wale nō, a ʻo ke ʻano o kēlā me kēia mole glucose pili. Hoʻoholo pū kēia ʻokoʻa hoʻolālā i ka ʻokoʻa o nā waiwai o ka cellulose a me ka starch.
Ka manawa hoʻouna: Apr-10-2023