He aha nā mea e pili ai i ka viscosity o ka hydroxypropyl methylcellulose?

No ka hoʻohana ʻana i ka mortar pulu, hydroxypropyl methylcellulose nā waiwai thickening maikaʻi, hiki ke hoʻonui nui i ka hiki ke hoʻopaʻa ʻia ma waena o ka mortar pulu a me ka papa kumu, a hiki ke hoʻomaikaʻi i ka hana anti-sag o ka mortar, no laila ua hoʻohana nui ʻia i ka plastering Mortar, waho. ʻōnaehana hoʻokaʻawale ʻana i ka paia a me ka momi hoʻopaʻa pōhaku.

No ka hopena mānoanoa o ka cellulose ether, hiki iā ia ke hoʻonui i ka homogeneity a me ka anti-dispersion hiki o nā mea i hoʻohui ʻia i ka ciment hou, a hiki ke pale aku i nā pilikia o ka delamination, segregation a me ke koko i loko o ka mortar a me ka pā. Hiki ke hoʻohana ʻia i ka lāʻau lapaʻau Fiber-reinforced, i lalo o ka wai a me ka paʻa paʻa ponoʻī.

Hiki i ka Hydroxypropyl methylcellulose ke hoʻonui i ka hana viscous o nā mea sima. Loaʻa kēia hana mai ka viscosity o ka solution cellulose ether. ʻO ka mea maʻamau, hoʻohana ʻia ka helu helu o ka viscosity e hoʻoponopono i ka viscosity o ka cellulose ether solution, ʻoiai cellulose ʻO ka viscosity o ka ether e pili pinepine ana i kahi ʻano o ka cellulose ether solution, maʻamau 2%, ma kahi mahana i ʻōlelo ʻia, e like me 20 degere a ka huli ʻana, me ka hoʻohana ʻana i kahi mea ana i ʻōlelo ʻia, e like me ka viscometer rotational. Waiwai viscosity.

ʻO ka viscosity kekahi o nā ʻāpana koʻikoʻi e loiloi i ka hana o ka cellulose ether. ʻOi aku ka kiʻekiʻe o ka viscosity o ka hydroxypropyl methylcellulose solution, ʻoi aku ka maikaʻi o ka viscosity o nā mea hana sima, a ʻoi aku ka maikaʻi o ka hana adhesion i ka substrate. I ka manawa like, ua ʻoi aku ka ikaika o ka hiki anti-sagging a me ka anti-dispersion, akā inā kiʻekiʻe kona viscosity, e hoʻopili ia i ka hana kahe a me ka operability o nā mea sima.

He aha nā mea e pili ai i ka viscosity o ka hydroxypropyl methylcellulose? Ma muli o nā kumu aʻe.

1. ʻO ke kiʻekiʻe o ka polymerization o cellulose ether o hydroxypropyl methylcellulose, ʻoi aku ka nui o kona kaumaha mole, e hopena i ka viscosity kiʻekiʻe o kāna ʻano wai.

2. Inā ʻoi aku ka nui o ka nui a i ʻole ka neʻe ʻana o ka cellulose ether, ʻoi aku ka kiʻekiʻe o ka viscosity o kāna ʻano wai. Eia nō naʻe, pono e mālama i ke koho ʻana i ka nui kūpono o ka cellulose ether i ka wā e hoʻohana ai, ʻo ka mea nui e pale aku i ka nui o ka cellulose ether. E hoʻopilikia ia i ka hana o ka mortar a me ke kaʻa.

3. E like me ka nui o nā wai, e emi ana ka viscosity o ka solution cellulose ether me ka piʻi ʻana o ka mahana, a ʻoi aku ka kiʻekiʻe o ka neʻe ʻana o ka cellulose ether, ʻo ia ka haʻahaʻa o ka mahana. ʻO ka nui o ka hopena.

4. ʻO ka solution cellulose ether ka mea maʻamau he pseudoplastic, nona nā ʻano o ka shear thinning. ʻOi aku ka nui o ka shear rate i ka wā o ka hoʻāʻo ʻana, ʻoi aku ka liʻiliʻi o ka viscosity.

E ho'ēmiʻia ka hui pūʻana o ka mortar ma muli o ka hana o ka ikaika o waho, a he mea kūpono hoʻi i ka hanaʻana i ka mortar, e hopena i ka hui maikaʻi a me ka hana o ka mīkini i ka manawa like. Eia naʻe, inā ʻoi aku ka kiʻekiʻe o ka hoʻonā cellulose ether Ke haʻahaʻa ka viscosity a liʻiliʻi ka viscosity, e hōʻike ana ia i nā ʻano o ka wai Newtonian. Ke piʻi aʻe ka manaʻo, e hōʻike mālie ka hopena i nā ʻano o ka wai pseudoplastic, a inā ʻoi aku ka kiʻekiʻe o ka ʻike, e ʻike ʻia ka pseudoplasticity.