Urea Formaldehyde Glue Powder, Dị Njikere Maka Mbupu ~

Nkọwa Ngwaahịa

Resin Urea-formaldehyde (UF), nke a makwaara dị ka resin urea-formaldehyde, bụ polycondensation nke urea na formaldehyde n'okpuru ọrụ nke ihe na-akpali akpali (alkaline ma ọ bụ acidic catalyst) iji mepụta resin urea-formaldehyde mbụ, wee mepụta usoro ikpeazụ a na-apụghị ịgbaze agbaze na nke a na-apụghị ịgbaze agbaze n'okpuru ọrụ nke ihe na-agwọ ma ọ bụ ihe mgbakwunye. Resin Thermosetting. Resin urea-formaldehyde a gwọrọ agwọ dị mfe karịa resin phenolic, translucent, na-eguzogide asịd adịghị ike na alkali adịghị ike, nwere ezigbo ihe mkpuchi, iguzogide iyi dị mma, ma dị ọnụ ala. Ọ bụ ụdị ihe a na-ejikarị eme ihe n'etiti ihe nrapado, karịsịa na imepụta ọtụtụ bọọdụ arụrụ arụ na ụlọ ọrụ nhazi osisi, resin urea-formaldehyde na ngwaahịa ndị emezigharịrị ya na-aza ihe dị ka 90% nke ojiji nrapado zuru oke. Agbanyeghị, resin urea-formaldehyde dị mfe ịgbaze mgbe ekpughere ya na asịd siri ike na alkalis. Ọ nwere iguzogide ihu igwe na-adịghị mma, viscosity mbụ adịghị mma, nnukwu mkpụkọ, mgbawa, iguzogide mmiri, na ịka nká dị mfe. Mbadamba artificial nke e ji resin urea-formaldehyde na-ewepụta formaldehyde n'oge mmepụta na ojiji. nsogbu, yabụ a ga-agbanwerịrị ya.

Ngwa

Enwere ike iji ya mee ihe na ngwaahịa ndị na-anaghị achọ oke mmiri na ihe ndị na-adịghị agbanwe agbanwe, dịka eriri ike, swiitị, aka igwe, ihe mkpuchi ngwa egwu, ihe ndị dị mkpa kwa ụbọchị, ihe ịchọ mma, taịlị mahjong, mkpuchi ụlọ mposi, a pụkwara iji ya mee ihe n'ịmepụta ụfọdụ ihe tebụl.

Urea-formaldehyde resin bụ ụdị ihe nrapado a na-ejikarị eme ihe. Karịsịa n'imepụta ọtụtụ bọọdụ e ji aka rụọ n'ụlọ ọrụ nhazi osisi, urea-formaldehyde resin na ngwaahịa ndị e megharịrị emezi na-akpata ihe dị ka 90% nke ojiji nrapado zuru oke.