Nā ʻokoʻa ma waena o ka polyurethane MDI a me nā ʻōnaehana TDI no nā mīkini elastomer

Hoʻolauna:

He mea koʻikoʻi nā mīkini polyurethane elastomer i ka ʻoihana hou.Eia nō naʻe, ke koho ʻana i kahi ʻōnaehana polyurethane, ʻelua mau koho nui: ʻo ka ʻōnaehana MDI (diphenylmethane diisocyanate) a me ka ʻōnaehana TDI (terephthalate).E ʻimi kēia ʻatikala i nā ʻokoʻa ma waena o kēia mau ʻōnaehana ʻelua e kōkua i ka mea heluhelu e hana i kahi koho ʻike no kahi noi.

I. Nā Mīkini Elastomer no nā Pūnaehana MDI Polyurethane

ʻO ka wehewehe a me ka hoʻohui ʻana: ʻo ka ʻōnaehana MDI he polyurethane elastomer i hana ʻia mai ka diphenylmethane diisocyanate ma ke ʻano he kumu waiwai nui, e loaʻa mau i nā mea kōkua e like me ka polyether polyol a me ka polyester polyol.

Nā hiʻohiʻona a me nā pono:

ʻO ka ikaika kiʻekiʻe a me ke kū'ē abrasion: Loaʻa i nā elastomers pūnaewele MDI nā waiwai kino maikaʻi a mālama i ka paʻa i nā kaiapuni koʻikoʻi.

ʻO ke kūpaʻa ʻelemakule maikaʻi loa: ʻo nā elastomers me nā ʻōnaehana MDI he kūpaʻa maikaʻi i ka oxidation a me ka radiation UV a me ke ola lawelawe lōʻihi.

Kūleʻa maikaʻi i nā ʻaila a me nā mea hoʻoheheʻe: E kūpaʻa mau nā elastomers MDI i ka wā e ʻike ʻia ai i nā mea kemika e like me nā ʻaila a me nā solvents.

Nā wahi noi: Elastomers o ka ʻōnaehana MDI i hoʻohana nui ʻia i ka hana kaʻa, nā mea haʻuki a me nā huahana ʻoihana.

II.Nā mīkini elastomer pūnaewele Polyurethane TDI

Ka wehewehe a me ka haku mele ʻana: ʻO ka ʻōnaehana TDI he polyurethane elastomer i hana ʻia me terephthalate ma ke ʻano he kumu maka, maʻamau i loaʻa nā mea kōkua e like me ka polyether polyol a me ka polyester polyol.

Nā hiʻohiʻona a me nā pono:

ʻO ka elasticity maikaʻi a me ka palupalu: Loaʻa i nā elastomers ʻōnaehana TDI ka elasticity kiʻekiʻe a me ka palupalu a kūpono i nā huahana e koi ana i ka manaʻo lima kiʻekiʻe.

ʻOi aku ka maikaʻi o ka piʻo haʻahaʻa haʻahaʻa: ʻO nā elastomers ʻōnaehana TDI he hana kūlou maikaʻi loa i nā kaiapuni haʻahaʻa haʻahaʻa, a ʻaʻole maʻalahi ke hoʻololi a haki paha.

He kūpono no nā ʻano paʻakikī: ʻoi aku ka maikaʻi o nā elastomers TDI i ka hana ʻana i nā ʻano paʻakikī e hoʻokō i nā pono hoʻolālā like ʻole.

Nā noi: Hoʻohana nui ʻia nā elastomers TDI i nā lako a me nā moena, ka hana lole wāwae a me nā mea hoʻopili.

III.Hoʻohālikelike o nā ʻōnaehana MDI a me TDI

Ma ke kahua o nā mīkini elastomer polyurethane, ʻo nā ʻōnaehana MDI a me TDI nā ʻano like ʻole a me nā pono.E hoʻohālikelike hou nā papa aʻe i kā lākou ʻokoʻa ma ke ʻano o ka hoʻolālā kemika, nā waiwai kino, ka pale ʻana i ke kaiapuni a me ka palekana, nā kumukūʻai hana a me nā wahi noi.

E like me ka mea i ʻike ʻia mai ka papa ma luna, ʻo nā elastomers o ka ʻōnaehana polyurethane MDI he ikaika kiʻekiʻe, ke kūpaʻa ʻelemakule a me ka pale ʻana i ka aila, a kūpono no ka hoʻohana ʻana i ka hana kaʻa, nā mea haʻuki a me nā huahana ʻoihana.Ma ka ʻaoʻao ʻē aʻe, loaʻa i nā elastomers ʻōnaehana polyurethane TDI ka elasticity maikaʻi, hiki ke maʻalahi a me nā ʻano kulou haʻahaʻa haʻahaʻa, a kūpono ia no ka hoʻohana ʻana i nā wahi e like me nā lako a me nā moena, ka hana ʻana i nā kāmaʻa a me nā mea hoʻopili.

He mea kūpono hoʻi e ʻike ʻoi aku ka uku o ka ʻōnaehana MDI e hana, akā hāʻawi ʻoi aku ka maikaʻi o ka palekana a me ka palekana.ʻO ka ʻokoʻa, ʻoi aku ka haʻahaʻa o ka ʻōnaehana TDI akā ʻoi aku ka kiʻekiʻe o ka ʻike isocyanate a ʻoi aku ka liʻiliʻi o ke kaiapuni ma mua o ka ʻōnaehana MDI.No laila, i ke koho ʻana i kahi ʻōnaehana polyurethane, pono e noʻonoʻo nā mea hana i ka hana huahana, nā koi o ke kaiapuni a me nā kaohi kālā i mea e hoʻomohala ai i ka papahana hana kūpono e hoʻokō i nā pono o nā noi like ʻole.

IV.Nā Koho Noi a me nā Manaʻo

Ke kohoʻana i ka'ōnaehana kūpono no nāʻano likeʻole: E noʻonoʻo ana i nā koi huahana a me nāʻano o ka'āpana noi, koho i nā elastomers me nā pūnaewele MDI a iʻole TDI e hōʻoia i ka hana maikaʻi loa a me ke kumukūʻai.

ʻO ka hoʻoholo ʻana e pili ana i ka hana huahana a me ka waihona kālā: i ke koho ʻana i kahi ʻōnaehana, ʻike ʻia ka hana ʻana o ka huahana, nā koi kūlohelohe a me nā kaohi kālā e hoʻomohala i ka hopena hana kūpono loa.

Ka hopena:

ʻO ka Polyurethane MDI a me ka TDI system elastomers i ko lākou pono ponoʻī a kūpono i nā pono huahana ma nā wahi like ʻole.ʻO ka hoʻomaopopo ʻana i nā ʻokoʻa e kōkua i nā mea hana e hana i nā koho ʻike e hōʻoia i ka hana maikaʻi ʻana o kā lākou huahana i nā noi kikoʻī.