ʻO ka honua o nā adhesives kahi mea hoihoi, hoʻopiha ʻia me ka plethora o nā mea waiwai, formulations, a me nā noi. Ma waena o nā ʻāpana he nui i hoʻokumu ʻia i nā formulations adhesive, he mea koʻikoʻi nā mea hana mānoanoa. ʻO kēia mau mea hana ke kuleana no ka hāʻawi ʻana i ka viscosity a me ke kūpaʻa i ka adhesive, e hōʻoia ana e hana maikaʻi ia i nā kūlana like ʻole a pili pono i nā substrates like ʻole.
Introduction to Thickening Agents in Adhesives:
ʻO nā mea mānoanoa, ʻike ʻia hoʻi he rheology modifiers a i ʻole nā mea hoʻonui viscosity, he mau mea i hoʻohui ʻia i nā mea hoʻopili e hoʻonui ai i ko lākou viscosity a mānoanoa paha. Hāʻawi lākou i kekahi mau hana koʻikoʻi:
Ka Mana Viscosity: Mālama nā mea mānoanoa i nā ʻano kahe o nā adhesives, e maʻalahi iā lākou e hoʻopili a pale i ka sagging a i ʻole ka holo ʻana ma hope o ka noi.
Hoʻonui i ka Adhesion: Ma ka hoʻonui ʻana i ka viscosity, hiki i nā mea mānoanoa ke hoʻonui i ka pilina ma waena o ka adhesive a me ka substrate, e hoʻomaikaʻi i nā waiwai adhesion.
Kāohi ʻana i ka hoʻopaʻa ʻana: kōkua kēia mau mea hana i ka pale ʻana i ka hoʻopaʻa ʻana o nā mea paʻa a hōʻoia i ka hāʻawi like ʻana o nā ʻāpana i loko o ka hoʻopili ʻana, hoʻomaikaʻi i ke kūpaʻa a me ka mālama ola.
Hoʻonui i ka hana: ʻoi aku ka maʻalahi o nā mea hoʻopili mānoanoa e mālama a hoʻoponopono i ka wā o ka noi, e hāʻawi ana i ka hana ʻoi aku ka maikaʻi i nā mea hoʻohana.
Nā ʻano o nā mea hana mānoanoa:
Hiki ke hoʻokaʻawale nui ʻia nā mea hana mānoanoa i hoʻohana ʻia i nā adhesives i kekahi mau ʻāpana e pili ana i kā lākou hana kemika a me ka hana o ka hana:
Polymers:
Nā Hua'ōlelo Cellulose: ʻO nā laʻana he hydroxyethyl cellulose (HEC), methyl cellulose (MC), a me carboxymethyl cellulose (CMC). Hiki ke hoʻoheheʻe ʻia kēia mau polymers i ka wai a hāʻawi i nā waiwai mānoanoa maikaʻi loa.
ʻO nā Polymers Acrylic: ʻO nā mānoanoa Acrylic, e like me nā polyacrylates, hāʻawi i ka versatility a me ka hoʻohālikelike ʻana me nā ʻano hoʻohui like ʻole.
Nā Polyurethanes: Hāʻawi nā mānoanoa ma muli o ka polyurethane i ka mānoanoa hana kiʻekiʻe a me ka mana rheological i nā mea hoʻopili i hoʻopaʻa ʻia.
Nā mea mānoanoa ʻole:
Pālolo: Hoʻohana mau ʻia nā pālolo kūlohelohe e like me ka bentonite a me ka montmorillonite ma ke ʻano he mānoanoa i nā mea hoʻopili wai. Hana lākou ma ka hana ʻana i kahi ʻōnaehana pūnaewele e hoʻonui ai i ka viscosity.
Silica: Hoʻohana ʻia ka silica precipitated a me ka silica colloidal e like me nā mea mānoanoa i nā hoʻopili hoʻopili, ʻoi aku hoʻi i nā mea hoʻopili silicone-based.
Nā mea mānoanoa organik:
Xanthan Gum: Loaʻa ʻia mai ka microbial fermentation, ʻo ka xanthan gum he mea hoʻopaʻa mānoanoa maikaʻi loa i kūpono no nā ʻano hana hoʻopili.
Guar Gum: ʻO kekahi mānoanoa maoli, guar gum, i loaʻa mai i nā pi guar a hoʻohana nui ʻia i nā mea hoʻopili wai.
Mākaʻikaʻi: Hiki i nā starch i hoʻololi ʻia, e like me ka starch kulina a i ʻole ka starch ʻuala, hiki ke hana ma ke ʻano he mānoanoa maikaʻi i kekahi mau mea hoʻopili.
Nā mea mānoanoa hui:
Ke hana nei kēia mau mānoanoa ma ka hoʻokumu ʻana i nā hui me nā molekole ʻē aʻe i loko o ka hoʻopili ʻana, e hana ana i kahi pūnaewele e hoʻonui ai i ka viscosity. ʻO nā laʻana he polymers hydrophobically modified (HMPs) a me nā polyurethane thickeners me nā hui hui.
Nā mea e hoʻololi ai i ke koho ʻana i nā mea hana mānoanoa:
ʻO ke koho ʻana i ka mea mānoanoa kūpono no ka hoʻokumu ʻia ʻana o ka adhesive e pili ana i ka noʻonoʻo ʻana i nā kumu like ʻole:
Hoʻohālikelike: Pono ka mānoanoa e kūpono me nā ʻāpana ʻē aʻe o ka hoʻopili hoʻopili, me nā solvents, resins, a me nā mea hoʻohui.
Solubility: Ma muli o ke ʻano hoʻopili (wai-wai, solvent-based, a hoʻoheheʻe wela paha), pono e hoʻoheheʻe ʻia ka mea mānoanoa a hoʻopuehu paha i loko o ka solvent i koho ʻia.
Rheological Properties: ʻO ke ʻano rheological i makemake ʻia o ka adhesive (shear thinning, thixotropic, etc.) alakaʻi i ke koho ʻana i ka mea hoʻomoʻo a me kona ʻano.
Ke Kaʻina Hana: ʻO ke ʻano o ka hoʻohana ʻana (brushing, spraying, etc.) a me ka mānoanoa noi i makemake ʻia e hoʻololi i ke koho ʻana o ka mānoanoa a me kona ʻano viscosity.
Noʻonoʻo Kaiapuni: Hiki i nā lula a me nā noʻonoʻo kaiapuni ke hoʻopaʻa i ka hoʻohana ʻana i kekahi mau mea mānoanoa, e like me nā mea hoʻohuihui kūlohelohe (VOC) i loko o nā mea hoʻopili i hoʻopaʻa ʻia.
Nā ʻāpana noi a me nā manaʻo:
Loaʻa i nā mea hana mānoanoa nā noi ma nā ʻoihana like ʻole a me nā ʻano adhesive:
Nā Paʻa Hana: Hoʻohana mau ʻia nā mea mānoanoa i nā mea hoʻopili kūkulu no nā mea hoʻopaʻa e like me ka lāʻau, metala, kekona, a me nā seramika. Hoʻopaʻa lākou i ka hoʻopiha piha ʻana a me ka pololei o ke kūkulu ʻana.
Packaging Adhesives: Ma nā palapala hoʻopili, kahi e hoʻohana ʻia ai nā mea hoʻopili no ka hoʻopaʻa ʻana a me ka hoʻopaʻa ʻana i ka pahu pahu, ka pepa, a me nā plastics, hāʻawi nā mea mānoanoa i ka mana viscosity a pale i ka squeeze-out i ka wā o ka noi.
Nā Adhesive Automotive: Pono nā mea hoʻopili kaʻa i ka mana rheological pololei no nā noi e like me ka hoʻopaʻa ʻana o ka panel kino, ka hui ʻoki kūloko, a me ka hoʻonohonoho ʻana i ka pale makani.
Nā mea hoʻopili lāʻau: ʻO nā glues lāʻau a me nā mea hoʻopili i hoʻohana ʻia i ka hana ʻana i ka lāʻau e pōmaikaʻi mai nā mea mānoanoa e hoʻokō ai i nā paʻa ikaika a pale i ka kulu a holo ʻana paha i ka wā o ka noi.
Nā Lapaʻau Lapaʻau: Ma nā noi lapaʻau e like me nā ʻaʻahu ʻeha, nā ʻāpana transdermal, a me nā mea hoʻopili kino, e hōʻoiaʻiʻo nā mea mānoanoa i ka pili pono a me ka biocompatibility.
ʻO nā mea hana mānoanoa nā mea pono ʻole o ka hoʻokumu ʻana i ka adhesive, e hāʻawi ana i ka mana viscosity, kūpaʻa, a me ka hoʻomaikaʻi ʻana i ka hana ma nā ʻano o nā noi. ʻO ke koho ʻana o ka mānoanoa kūpono e pili ana i nā mea e like me ka hoʻohālikelike, ka solubility, nā waiwai rheological, a me nā koi noi. Me ka holomua mau ʻana i ka ʻepekema waiwai a me ka ʻenehana adhesive, hoʻohiki ka hoʻomohala ʻana o nā mea hana mānoanoa hou e hoʻomaikaʻi hou i ka hana a me ka versatility o nā adhesives i nā ʻoihana like ʻole. Ke hoʻomau nei ka ulu ʻana o nā mea hoʻohui adhesive e hoʻokō i nā koi o ka hana ʻana a me ke kūkulu ʻana o kēia wā, ʻo ke kuleana o nā mea mānoanoa ka mea nui i ka hōʻoia ʻana i ka kūleʻa a me ka hilinaʻi o nā hoʻonā paʻa paʻa.
Ka manawa hoʻouna: Mar-29-2024