Paura Piri Urea Formaldehyde, Kua rite mō te Tukunga~

Whakaahuatanga Hua

Ko te kapia Urea-formaldehyde (UF), e mōhiotia ana ko te kapia urea-formaldehyde, ko te polycondensation o te urea me te formaldehyde i raro i te mahi a te whakakorikori (kaikorikori kawakore, waikawa rānei) hei hanga i te kapia urea-formaldehyde tuatahi, kātahi ka hanga i te wāhanga whakamutunga kāore e rewa me te taea te whakauru i raro i te mahi a te kaihoko whakaora, te tāpiri rānei. Kapia whakamahana. He māmā ake te tae o te kapia urea-formaldehyde kua rongoatia i te kapia phenolic, he mārama, he ātete ki ngā waikawa ngoikore me te kawakore ngoikore, he pai ngā āhuatanga whakamahana, he pai te ātete ki te kakahu, ā, he iti te utu. Koinei te momo e whakamahia whānuitia ana i waenga i ngā piripiri, inā koa i roto i te hanga o ngā papa horihori i roto i te umanga tukatuka rakau, ko te kapia urea-formaldehyde me ōna hua kua whakarerekētia e 90% o te whakamahinga katoa o te piripiri. Heoi, he ngawari te pirau o te kapia urea-formaldehyde ina pāngia e ngā waikawa kaha me ngā kawakore. He ngoikore te ātete ki te huarere, he ngoikore te matotoru tuatahi, he nui te whakahekenga, he pakarukaru, he ātete ki te wai, ā, he ngawari te koroheketanga. Ka tukuna e ngā papa horihori i hangaia ki te kapia urea-formaldehyde te formaldehyde i te wā o te tukanga hanga me te whakamahinga.

Tono

Ka taea te whakamahi i roto i ngā hua kāore e hiahiatia he ātete wai nui me ngā āhuatanga hiko kore e hiahiatia, pērā i ngā whiri hiko, ngā pana, ngā kakau mīhini, ngā anga taputapu, ngā porotiti, ngā mea e hiahiatia ana o ia rā, ngā whakapaipai, ngā taera mahjong, ngā taupoki wharepaku, ā, ka taea hoki te whakamahi i roto i te hanga i ētahi taputapu tēpu.

Ko te kapia Urea-formaldehyde te momo piripiri e whakamahia whānuitia ana. Ina koa i roto i te hanga o ngā papa horihori i roto i te umanga tukatuka rakau, ko te kapia urea-formaldehyde me ōna hua kua whakarerekētia e 90% o te whakamahinga katoa o te piripiri.