ʻO ka hoʻoheheʻe ʻia a me ka viscosity o ka HEC cellulose i nā uhi wai

Pōkole:

I nā makahiki i hala iho nei, ua loaʻa i nā uhi wai ka nānā nui ʻia ma muli o ko lākou aloha i ke kaiapuni a me ka haʻahaʻa o ka waihona hui organik volatile (VOC). ʻO Hydroxyethylcellulose (HEC) kahi polymer wai-soluble i hoʻohana nui ʻia i loko o kēia mau ʻano hana, e lawelawe ana ma ke ʻano he mea hoʻomānoanoa e hoʻonui i ka viscosity a kaohi i ka rheology.

hoʻolauna:

1.1 Ka Moolelo:

Ua lilo nā uhi wai i mea ʻē aʻe pili i ke kaiapuni i nā uhi solvent kuʻuna, e hoʻoponopono ana i nā pilikia e pili ana i nā hoʻokuʻu ʻana o nā hui organik volatile a me ka hopena o ke kaiapuni. ʻO Hydroxyethylcellulose (HEC) kahi derivative cellulose he mea nui ia i ka hana ʻana i nā uhi wai a hāʻawi i ka kaohi rheology a me ke kūpaʻa.

1.2 Nā Pahuhopu:

ʻO ka pahuhopu o kēia ʻatikala e wehewehe i nā ʻano solubility o HEC i nā uhi wai a hoʻopaʻa i ka mana o nā kumu like ʻole ma kona viscosity. He mea nui ka hoʻomaopopo ʻana i kēia mau ʻano no ka hoʻomaikaʻi ʻana i nā ʻano uhi a me ka hoʻokō ʻana i ka hana i makemake ʻia.

ʻO ka Hydroxyethylcellulose (HEC):

2.1 ʻAno a me ka hana:

He hua cellulose derivative ka HEC i loaʻa ma o ka hopena etherification o ka cellulose a me ka ethylene oxide. ʻO ka hoʻokomo ʻana o nā hui hydroxyethyl i loko o ke kuamoʻo cellulose e kōkua i kona solubility wai a hoʻolilo iā ia i polymer waiwai nui i nā ʻōnaehana wai. E kūkākūkā kikoʻī ʻia ke ʻano molekala a me nā waiwai o HEC.

Ka hoʻoheheʻe ʻia ʻana o HEC i ka wai:

3.1 Nā kumu e pili ana i ka solubility:

Hoʻopilikia ʻia ka solubility o HEC i ka wai e kekahi mau kumu, me ka mahana, ka pH, a me ka nui. E kūkākūkā ʻia kēia mau mea a me ko lākou hopena i ka solubility HEC, e hāʻawi ana i ka ʻike i nā kūlana e kākoʻo ai i ka hoʻoheheʻe ʻana o HEC.

3.2 Palena hoʻoheheʻe ʻia:

He mea nui ka hoʻomaopopo ʻana i nā palena solubility o luna a me lalo o HEC i ka wai no ka hana ʻana i nā uhi me ka hana kūpono loa. E ʻeli ana kēia ʻāpana i loko o ka pae hoʻohuihui kahi e hōʻike ai ʻo HEC i ka solubility kiʻekiʻe loa a me nā hopena o ka ʻoi aku ma mua o kēia mau palena.

Hoʻonui i ka mānoanoa me HEC:

4.1 Ke kuleana o HEC i ka mānoanoa:

Hoʻohana ʻia ʻo HEC ma ke ʻano he mea hoʻomānoanoa i nā uhi wai e kōkua i ka hoʻonui ʻana i ka viscosity a hoʻomaikaʻi i ke ʻano rheological. E ʻimi ʻia nā ʻano hana e hoʻokō ai ʻo HEC i ka kaohi viscosity, e hoʻoikaika ana i kāna mau pilina me nā molekala wai a me nā mea ʻē aʻe i loko o ka hoʻohuihui uhi.

4.2 Hopena o nā loli formula ma ka viscosity:

Hiki i nā loli hoʻohui like ʻole, me ka nui o ka HEC, ka mahana, a me ka wikiwiki o ka ʻoki ʻana, ke hoʻopilikia nui i ka mānoanoa o nā uhi wai. E kālailai kēia ʻāpana i ka hopena o kēia mau loli ma ka mānoanoa o nā uhi HEC e hāʻawi i nā ʻike kūpono no nā mea hoʻohui.

Nā noi a me nā manaʻolana e hiki mai ana:

5.1 Nā noi ʻoihana:

Hoʻohana nui ʻia ʻo HEC i nā noi ʻoihana like ʻole e like me nā pena, nā mea hoʻopili a me nā mea hoʻopaʻa. E hōʻike ana kēia ʻāpana i nā hāʻawina kikoʻī o HEC i nā uhi wai i loko o kēia mau noi a kūkākūkā i kona mau pono ma luna o nā mea hoʻomānoanoa ʻē aʻe.

5.2 Nā kuhikuhi noiʻi e hiki mai ana:

I ka hoʻomau ʻana o ke koi no nā uhi hoʻomau a me ka hana kiʻekiʻe, e ʻimi ʻia nā kuhikuhi noiʻi e hiki mai ana ma ke kahua o nā ʻano hana HEC. Hiki i kēia ke komo pū me nā hana hou i ka hoʻololi ʻana o HEC, nā ʻano hana hou, a me nā ʻano hana hoʻohālikelike holomua.

i ka hopena:

I ka hōʻuluʻulu ʻana i nā ʻike nui, e hōʻike ana kēia ʻāpana i ke koʻikoʻi o ka solubility a me ka kaohi viscosity i nā uhi wai e hoʻohana ana iā HEC. E hoʻopau ʻia kēia ʻatikala me nā hopena kūpono no nā mea hoʻokumu a me nā ʻōlelo paipai no ka noiʻi hou aku e hoʻomaikaʻi i ka ʻike ʻana o HEC i nā ʻōnaehana wai.