Nā ʻano mānoanoa a me nā ʻano
He kiʻekiʻe ka mānoanoa o ka cellulosic mānoanoa, ʻoi loa no ka mānoanoa o ka pae wai; ʻaʻole liʻiliʻi lākou i ka hoʻopili ʻana i ka uhi a hoʻohana nui ʻia; hiki iā lākou ke hoʻohana i kahi ākea o ka pH. Eia nō naʻe, aia nā pōʻino e like me ka maikaʻi ʻole o ka pae ʻana, ʻoi aku ka nui o ka splashing i ka wā o ka roller coating, ka paʻa maikaʻi ʻole, a hiki ke hōʻino ʻia i ka microbial degradation. No ka mea he haʻahaʻa haʻahaʻa ma lalo o ke kiʻekiʻe a me ka viscosity kiʻekiʻe ma lalo o ka static a me ka haʻahaʻa haʻahaʻa, piʻi wikiwiki ka viscosity ma hope o ka uhi ʻana, hiki ke pale i ka sagging, akā ma ka ʻaoʻao ʻē aʻe, ke kumu ia i ka pae maikaʻi ʻole. Ua hōʻike ʻia nā haʻawina e like me ka piʻi ʻana o ke kaumaha molekala pili o ka mānoanoa, e piʻi pū ana ka spttering o ka pena latex. Hiki i nā mea ʻeleʻele cellulosic ke pāpaʻi ma muli o ko lākou nui molekala pili. A no ka mea ʻoi aku ka hydrophilic o ka cellulose, e hōʻemi ia i ka pale wai o ke kiʻi pena.
mānoanoa cellulosic
ʻO ka polyacrylic acid thickeners he ikaika mānoanoa a me ka pae ʻana i nā waiwai, a me ke kūpaʻa ola kino maikaʻi, akā paʻakikī i ka pH a loaʻa ʻole ka wai kūʻē.
mānoanoa polyacrylic
Hoʻopau ʻia ke ʻano hui o ka mānoanoa polyurethane associative ma lalo o ka hana o ka ikaika shear, a emi iho ka viscosity. Ke nalowale ka ikaika shear, hiki ke hoʻihoʻi ʻia ka viscosity, hiki ke pale i ka hanana o ka sag i ke kaʻina hana. A ʻo kona hoʻihoʻi ʻana i ka viscosity he hysteresis, kahi kūpono i ka pae ʻana o ke kiʻi uhi. ʻOi aku ka haʻahaʻa o ka nui molekiko pili (mau kaukani a ʻumi tausani) o nā mea mānoanoa polyurethane ma mua o ka nui o ka molekala pili (haneri tausani a miliona) o nā ʻano mānoanoa mua ʻelua, ʻaʻole ia e hoʻoikaika i ka splashing. Loaʻa i nā molekala mānoanoa polyurethane nā pūʻulu hydrophilic a me ka hydrophobic, a ʻo nā pūʻulu hydrophobic he pilina ikaika me ka matrix o ka uhi kiʻiʻoniʻoni, hiki ke hoʻonui i ka pale wai o ke kiʻi uhi.
Ka manawa hoʻouna: Mar-24-2023