Tag: Ka uhi ʻana o ka pauka polyurethane

 

Polyaspartic Coating Technology

Polyaspartic Coating Technology

Hoʻokumu ʻia ka kemika ma ka hopena o kahi polyisocyanate aliphatic a me kahi ester polyaspartic, ʻo ia ka diamine aliphatic. Ua hoʻohana mua ʻia kēia ʻenehana i nā mea hoʻoheheʻe polyurethane solvent-borne coating maʻamau no ka mea ʻo nā esters polyaspartic he mea hoʻoheheʻe maikaʻi maikaʻi loa no nā uhi polyurethane paʻa kiʻekiʻe. ʻO ka ester ka mea nui o ka co-reactant no ka pane ʻana me kahi polyisocyanate. ʻO ke kūʻokoʻa a meHeluhelu hou aku…

He aha ka Polyurea Coating a me ka Polyurethane Coatings

Palapala Hoʻopili Polyurea

ʻO ka Polyurea Coating a me ka Polyurethane Coatings Polyurea coating ʻO ka uhi ʻana o Polyurea he ʻōnaehana ʻelua ʻāpana i hoʻokumu ʻia ma ka Amine hoʻopau prepolymer i hoʻopili ʻia me Isocyanate i hoʻokumu i nā loulou urea. ʻO ka hoʻopili ʻana ma waena o nā polymers reactive e hana ʻia me ka wikiwiki wikiwiki i ka mahana ambient. ʻAʻole pono kēia hopena i kekahi catalyst. No ka mea, aia ke ola o ka ipuhao i loko o kekona; ʻano kūikawā o Plural Pono e hoʻokō i ka hoʻohana ʻana i ka pū puhi pū. Hiki ke kūkulu ʻia nā ʻāpana a hiki i 500 aHeluhelu hou aku…

He aha ka moisture-cured polyurethane

ʻO ka polyurethane i hoʻōla ʻia i ka wai

He aha ka polyurethane i ho'ōla ʻia i ka wai. ʻO ka polyurethane hiki ke hoʻomaʻemaʻe i ka wai ka nui o ka isocyanate-terminated pre-polymer. Hiki ke hoʻohana ʻia nā ʻano like ʻole o ka pre-polymer e hāʻawi i ka waiwai pono. No ka laʻana, hoʻohana ʻia nā polyols polyether i hoʻopau ʻia i ka isocyanate e hāʻawi i ka loli maikaʻi ma muli o ko lākou haʻahaʻa haʻahaʻa hoʻololi aniani. ʻO ka hui pū ʻana i ka ʻāpana palupalu, e like me ka polyether, a me ka ʻāpana paʻakikī, e like me ka polyurea, hāʻawi i ka paʻakikī maikaʻi a me ka maʻalahi o nā uhi. Eia kekahi, ua hoomaluia na waiwai eHeluhelu hou aku…

ʻElua mau hoʻolālā no ka hoʻolālā ʻana i nā uhi me ke kū kūʻokoʻa mar

ka wehe ʻana i ka hanger ma ka uhi pauda

Loaʻa nā hoʻolālā ʻelua no ka hoʻolālā ʻana i nā uhi me ke kū kūʻokoʻa mar. Hiki ke ho'opa'a 'ia i 'ole e komo ka mea i ho'oha'aha'a i ka ilikai; a i ʻole hiki ke hana ʻia e hiki ke hoʻōla ma hope o ka hemo ʻana o ke koʻikoʻi male. Inā koho ʻia ka hoʻolālā paʻakikī, pono e loaʻa ka paʻakikī o ka uhi. Eia nō naʻe, hiki ke hāʻule i kēlā mau uhi ma muli o ka haki. ʻO ka hikiwawe kiʻiʻoniʻoni kahi mea nui e hoʻohuli ai i ka pale ʻana i ka haki. Hoʻohana i ka 4-hydroxybutyl acrylate ma kahi oHeluhelu hou aku…