Ka hopena o ka hydroxypropyl methylcellulose ma ka mortar

Nui nā kumu e pili ana i ka hoʻopili ʻana o ka hydroxypropyl methylcellulose HPMC i nā mea kūkulu hale, ʻoiai ka plaster gypsum, penei:

1 ka paʻa ʻana o ka wai

ʻO ka Hydroxypropyl methylcellulose no ke kūkulu ʻana e pale aku i ka omo nui ʻana o ka wai e ka substrate, a i ka wā e paʻa loa ai ka gypsum, pono e mālama ʻia ka wai i loko o ka plaster i ka hiki. Ua kapa ʻia kēia ʻano he paʻa wai a pili pono i ka viscosity o ka hopena hydroxypropyl methylcellulose kikoʻī i loko o ka stucco. ʻO ke kiʻekiʻe o ka viscosity o ka hopena, ʻo ke kiʻekiʻe o kona hiki ke paʻa wai. Ke hoʻonui ʻia ka nui o ka wai, e emi ana ka hiki ke paʻa wai. ʻO kēia no ka mea ʻo ka wai i hoʻonui ʻia e hoʻoheheʻe i ka hopena o ka hydroxypropyl methylcellulose no ke kūkulu ʻana, e hopena ana i ka emi ʻana o ka viscosity.

2 anti-sagging

ʻO kahi plaster me nā waiwai anti-sag e ʻae i nā mea hoʻopili e hoʻopili i nā ʻaʻahu mānoanoa me ka ʻole o ka sagging, a ʻo ia hoʻi ʻaʻole thixotropic ka plaster ponoʻī, kahi e paheʻe ai i lalo i ka wā o ke noi ʻana.

3 E hōʻemi i ka mānoanoa, kūkulu maʻalahi

Hiki ke loaʻa ka plaster gypsum haʻahaʻa-viscosity a maʻalahi hoʻi e kūkulu ma ka hoʻohui ʻana i nā huahana hydroxypropyl methylcellulose like ʻole no ke kūkulu ʻana. Ke hoʻohana ʻia nā papa viscosity haʻahaʻa o ka hydroxypropyl methylcellulose no ke kūkulu ʻana, ua emi iki ke kiʻekiʻe o ka viscosity. Ua maʻalahi ke kūkulu ʻana, akā ua nāwaliwali ka hiki ke paʻa wai o ka hydroxypropyl methylcellulose haʻahaʻa-viscosity no ke kūkulu ʻana, a pono e hoʻonui ʻia ka nui o ka hoʻohui.

4 Ka hoʻohālikelike ʻana o ka stucco

No ka nui paʻa o ka mortar maloʻo, ʻoi aku ka hoʻokele waiwai o ka hana ʻana i kahi nui o ka mortar pulu, hiki ke hoʻokō ʻia ma ka hoʻohui ʻana i nā pehu wai a me ka ea. Akā, ʻoi aku ka nui o ka wai a me nā pehu ea.