Ma hope o ka hoʻohui ʻana i ka hydroxypropyl methylcellulose i nā mea sima, hiki iā ia ke mānoanoa. ʻO ka nui o ka hydroxypropyl methylcellulose e hoʻoholo i ka pono wai o nā mea sima, no laila e hoʻopilikia ia i ka hana o ka mortar.
Hoʻopilikia kekahi mau kumu i ka viscosity o ka hydroxypropyl methylcellulose:
1. ʻO ke kiʻekiʻe o ke kekelē o ka polymerization o ka cellulose ether, ʻoi aku ka nui o kona kaumaha molekala, a ʻoi aku ke kiʻekiʻe o ka viscosity o ka hopena wai;
2. ʻO ke kiʻekiʻe o ka lawe ʻana (a i ʻole ka nui) o ka cellulose ether, ʻo ke kiʻekiʻe o ka viscosity o kāna wai hoʻoheheʻe. Eia nō naʻe, pono e hoʻolohe i ke koho ʻana i ka lawe kūpono i ka wā o ka noi ʻana e pale aku i ka lawe nui ʻana, kahi e hoʻopilikia ai i ka hana o ka mortar a me ka sima. ʻano;
3. E like me ka hapa nui o nā wai, e emi ana ka mānoanoa o ka hopena cellulose ether me ka piʻi ʻana o ka mahana, a ʻo ke kiʻekiʻe o ka nui o ka cellulose ether, ʻoi aku ka nui o ka mana o ka mahana;
4. ʻO ka hopena hydroxypropyl methylcellulose he pseudoplastic maʻamau, nona ka waiwai o ka shear thinning. ʻO ka nui o ka shear rate i ka wā o ka hoʻāʻo ʻana, ʻo ka haʻahaʻa o ka viscosity.
No laila, e emi ana ke kuʻikahi o ka mortar ma muli o ka ikaika o waho, he mea ia e pono ai i ke kūkulu ʻana o ka mortar, e hopena ana i ka hana maikaʻi a me ke kuʻikahi o ka mortar i ka manawa like.
E hōʻike ka hopena hydroxypropyl methylcellulose i nā ʻano wai Newtonian ke haʻahaʻa loa ka nui a haʻahaʻa ka viscosity. Ke piʻi ka nui, e hōʻike mālie ka hopena i nā ʻano wai pseudoplastic, a ʻo ke kiʻekiʻe o ka nui, ʻoi aku ka maopopo o ka pseudoplasticity.
Ka manawa hoʻouna: Ian-28-2023