ʻO ka pena Latex kahi hui o nā puaʻa, hoʻopiha piha a me nā polymer dispersions, a pono e hoʻohana ʻia nā mea hoʻohui e hoʻoponopono i kona viscosity i loaʻa iā ia nā waiwai rheological e pono ai no kēlā me kēia pae o ka hana, mālama a me ke kūkulu ʻana.ʻO ia mau mea hoʻohui i kapa ʻia he mānoanoa, hiki ke hoʻonui i ka viscosity o nā uhi a hoʻomaikaʻi i nā waiwai rheological o nā uhi, no laila ua kapa ʻia lākou he rheological thickeners.
Hōʻike wale ka mea ma lalo nei i nā hiʻohiʻona nui o nā mea mānoanoa cellulose maʻamau a me kā lākou hoʻohana ʻana i nā pena latex.
ʻO nā mea cellulosic i hiki ke hoʻopili ʻia i ka uhi ʻana me ka methyl cellulose, hydroxyethyl cellulose, a me ka hydroxypropyl methyl cellulose.ʻO ka hiʻohiʻona nui loa o ka cellulose thickener he mea kupaianaha ka hopena mānoanoa, a hiki iā ia ke hāʻawi i ka pena i kahi hopena paʻa wai, hiki ke hoʻopaneʻe i ka manawa maloʻo o ka pena i kekahi ʻano, a hana pū i ka pena i kekahi thixotropy. e pale ana i ka maloʻo ʻana o ka pena.ʻO ka ua a me ka stratification i ka wā e mālama ai, akā naʻe, loaʻa i kēlā mau mānoanoa ka hemahema o ka pae maikaʻi ʻole o ka pena, ʻoi aku ka nui o ka hoʻohana ʻana i nā māka kiʻekiʻe-viscosity.
ʻO ka cellulose kahi meaʻai meaʻai no nā microorganism, no laila e hoʻoikaika ʻia nā ana anti-mildew i ka wā e hoʻohana ai.Hiki i nā mea mānoanoa cellulosic ke mānoanoa i ka pae wai, akā ʻaʻohe hopena mānoanoa i nā mea ʻē aʻe o ka pena wai, ʻaʻole hiki iā lākou ke hana i ka pilina koʻikoʻi ma waena o ka puaʻa a me nā mea emulsion i loko o ka pena, no laila ʻaʻole hiki iā lākou ke hoʻoponopono i ka rheology o ka pena. , 'O ka ma'amau, hiki ke ho'onui wale i ka viscosity o ka uhi ma ka ha'aha'a ha'aha'a a me ka li'ili'i (i kapa 'ia 'o KU viscosity).
1. Hydroxyethyl cellulose
Hoʻokaʻawale ʻia nā kikoʻī a me nā hiʻohiʻona o nā huahana hydroxyethyl cellulose e like me ke ʻano o ka hoʻololi a me ka viscosity.Ma waho aʻe o ka ʻokoʻa o ka viscosity, hiki ke hoʻokaʻawale ʻia nā ʻano o ka hydroxyethyl cellulose i ke ʻano solubility maʻamau, ʻano dispersion wikiwiki a me ke ʻano kūpaʻa biological ma o ka hoʻololi ʻana i ke kaʻina hana.E pili ana i ke ʻano o ka hoʻohana ʻana, hiki ke hoʻohui ʻia ka hydroxyethyl cellulose i nā pae like ʻole i ke kaʻina hana uhi.Hiki ke hoʻohui pololei ʻia ke ʻano hoʻoheheʻe wikiwiki i ke ʻano o ka pauka maloʻo, akā ʻo ka pH waiwai o ka ʻōnaehana ma mua o ka hoʻohui ʻana e emi iho ia ma mua o 7, ʻoi aku ka nui o ka hydroxyethyl cellulose e hoʻoheheʻe mālie i kahi haʻahaʻa pH haʻahaʻa, a ua lawa ka manawa no ka. ka wai e komo i loko o ka ʻāpana, a laila e hoʻonui i ka waiwai pH e hoʻoheheʻe koke ia.Hiki ke hoʻohana ʻia nā ʻanuʻu kūpono no ka hoʻomākaukau ʻana i kahi ʻano o ke kolu a hoʻohui ʻia i ka ʻōnaehana pena.
2. Hydroxypropyl Methyl Cellulose
ʻO ka hopena mānoanoa o ka hydroxypropyl methylcellulose ka mea like me ka hydroxyethylcellulose, ʻo ia hoʻi, e hoʻonui i ka viscosity o ka uhi ʻana ma nā haʻahaʻa haʻahaʻa a me ka liʻiliʻi.ʻO ka Hydroxypropyl methylcellulose ke kū'ē i ka enzymatic degradation, akā, ʻaʻole maikaʻi kona hoʻoheheʻe wai e like me ka hydroxyethyl cellulose, a loaʻa iā ia ka hemahema o ka gelling i ka wā i wela ai.No ka hydroxypropyl methylcellulose i mālama ʻia i ka ʻili, hiki ke hoʻohui pono ʻia i ka wai ke hoʻohana ʻia, ma hope o ka hoʻoulu ʻana a me ka hoʻopuehu ʻana, e hoʻohui i nā mea alkaline e like me ka wai amonia, hoʻoponopono i ka waiwai pH i 8-9, a hoʻoulu a hiki i ka pau ʻana.No ka hydroxypropyl methylcellulose me ka ʻole o ka mālama ʻana i ka ʻili, hiki ke hoʻoheheʻe ʻia a hoʻohu ʻia me ka wai wela ma luna o 85 ° C ma mua o ka hoʻohana ʻana, a laila hoʻomaha ʻia i ka lumi wela, a laila hoʻoulu ʻia me ka wai anuanu a i ʻole ka wai hau e hoʻopau loa.
3. Methyl cellulose
He mau waiwai like ka Methylcellulose me ka hydroxypropylmethylcellulose, akā ʻaʻole paʻa i ka viscosity me ka mahana.
ʻO ka Hydroxyethyl cellulose ka mea mānoanoa i hoʻohana nui ʻia i ka pena latex, a hoʻohana ʻia ia i nā pena latex kiʻekiʻe, waena a haʻahaʻa a me nā pena latex mānoanoa.Hoʻohana nui ʻia i ka mānoanoa o ka pena latex maʻamau, ka pena kalapona kalapona hina, a me nā mea ʻē aʻe.ʻAʻole hoʻohana ʻia ʻo Methyl cellulose i nā pena latex, akā hoʻohana nui ʻia ia i ka pauka o loko a me waho o ka pā putty ma muli o kona hemo koke ʻana a me ka paʻa ʻana o ka wai.Hiki i ka methyl cellulose kiʻekiʻe ke hāʻawi i ka putty me ka thixotropy koʻikoʻi a me ka paʻa ʻana o ka wai, e loaʻa ai iā ia nā waiwai scraping maikaʻi.
Ka manawa hoʻouna: Jan-03-2023