Urea Formaldehyde Glue Powder，Mākaukau no ka hoʻouna ʻana~

Wehewehe Huahana
ʻO ka Urea-formaldehyde resin (UF), i ʻike ʻia hoʻi ʻo urea-formaldehyde resin, ʻo ia ka polycondensation o urea a me formaldehyde ma lalo o ka hana a kahi catalyst (alkaline a acidic catalyst) e hana i kahi urea-formaldehyde resin mua, a laila hana i kahi pae hope loa insoluble a infusible ma lalo o ka hana a kahi mea hoʻōla a i ʻole additive. Resin Thermosetting. ʻOi aku ka māmā o ke kala o ka urea-formaldehyde resin i hoʻōla ʻia ma mua o ka phenolic resin, translucent, kū i nā waikawa nāwaliwali a me ka alkali nāwaliwali, loaʻa nā waiwai insulation maikaʻi, kūʻē maikaʻi loa i ka ʻaʻahu, a he makepono. ʻO ia ke ʻano i hoʻohana pinepine ʻia ma waena o nā mea hoʻopili, ʻoi aku hoʻi i ka hana ʻana o nā papa hana like ʻole i ka ʻoihana hana lāʻau, ʻo ka urea-formaldehyde resin a me kāna mau huahana i hoʻololi ʻia e pili ana i kahi 90% o ka hoʻohana holoʻokoʻa o ka hoʻopili. Eia nō naʻe, maʻalahi ka decompose o ka urea-formaldehyde resin i ka wā e hōʻike ʻia ai i nā waikawa ikaika a me nā alkalis. Loaʻa iā ia ka pale ʻino i ka wā, ka viscosity mua maikaʻi ʻole, ka shrinkage nui, ka brittleness, ke kūʻē i ka wai, a me ka maʻalahi o ka ʻelemakule. Hoʻokuʻu nā papa hana i hana ʻia me ka urea-formaldehyde resin i ka formaldehyde i ka wā o ke kaʻina hana a me ka hoʻohana ʻana. pilikia, no laila pono e hoʻololi ʻia.

Noi
Hiki ke hoʻohana ʻia i nā huahana ʻaʻole pono ke kūpaʻa wai kiʻekiʻe a me nā waiwai dielectric, e like me nā kaula mana, nā kuapo, nā lima mīkini, nā pahu mea kani, nā pihi, nā mea pono o kēlā me kēia lā, nā mea hoʻonaninani, nā tile mahjong, nā uhi lua, a hiki ke hoʻohana ʻia i ka hana ʻana i kekahi mau mea ʻaina.

ʻO ka resin Urea-formaldehyde ke ʻano mea hoʻopili i hoʻohana nui ʻia. ʻOi loa aku i ka hana ʻana i nā papa hana like ʻole i ka ʻoihana hana lāʻau, ʻo ka resin urea-formaldehyde a me kāna mau huahana i hoʻololi ʻia e pili ana i kahi 90% o ka hoʻohana ʻana i ka mea hoʻopili.