MHEC LH 620M

Hoʻohana ʻia ʻo EipponCell MHEC LH 620M methyl hydroxyethyl cellulose i loko o ka gypsum slurry e hāʻawi i kahi hopena mānoanoa.Ma ka lumi wela, e like me ka piʻi ʻana o ka viscosity a me ke ʻano o ka cellulose ether, ʻoi aku ka nui o kona hopena mānoanoa.Eia naʻe, i ka piʻi ʻana o ka mahana, e emi ana ka viscosity o ka cellulose ether, e hopena i ka nāwaliwali o kona hopena mānoanoa.Ke alakaʻi nei kēia i ka emi ʻana o ke koʻikoʻi shear yield, plastic viscosity, a me ka pseudoplasticity o ka hui gypsum, ka hopena i ka maikaʻi ʻole o ka hana.

Hoʻonui ka cellulose ether i ka paʻa wai o ka gypsum.Eia naʻe, i ka piʻi ʻana o ka mahana, ua emi loa ka paʻa ʻana o ka wai o ka gypsum i hoʻololi ʻia a nalowale loa i kona hopena hoʻomaikaʻi paʻa wai ma 60 °C.Hoʻomaikaʻi maikaʻi ʻia ka nui o ka mālama ʻana i ka wai o ka gypsum slurry e ka cellulose ether, a hiki i ka nui o ka mālama ʻana i ka wai i kahi wahi saturation me ka piʻi ʻana o ka ʻike no ka HPMC gypsum slurry me nā viscosities like ʻole.ʻO ka maʻamau, ʻo ka paʻa ʻana o ka wai o ka gypsum e like me ka viscosity o cellulose ether, akā he liʻiliʻi ka hopena i ka viscosity kiʻekiʻe.

ʻO nā hoʻololi i ka paʻa ʻana o ka wai o nā cellulose ethers me ka mahana e pili kokoke ana i ka microscopic morphology o cellulose ethers i ka pae wai.Ma kahi o ka hoʻopaʻa ʻana, ʻo ka cellulose ether ka mea e hōʻuluʻulu a hana i nā hui colloidal nui, me ka pale pono ʻana i nā ala hāʻawi wai o ka hui gypsum e hoʻokō ai i ka paʻa wai kūpono.Eia naʻe, i ka piʻi ʻana o ka mahana, ʻo nā waiwai gelation thermal o cellulose ether ke kumu e hoʻopuehu hou ai nā hui colloidal nui i hana mua ʻia, e hopena i ka emi ʻana o ka paʻa wai.