Whakaahuatanga Hua
Ko Urea-formaldehyde Resin (UF), e mohiotia ana hoki ko Urea-formaldehyde Resin, ko te Polycondension o Urea me te Intalyehyde. additive. Thermosetting resin. Ko te Urea-formaldehyde te reihi he maama atu i te tae atu i te keemu mai i te phenolic resin, he hauhautanga, he ngoikore nga waikawa ngoikore, he pai nga kakahu. Ko nga momo momo e whakamahia nuitia ana i roto i nga hanganga o nga papa mahi tukatuka, Urea-formaldehyde ano hoki mo te 90% o te whakamahi moni. However, urea-formaldehyde resin is easy to decompose when exposed to strong acids and alkalis. It has poor weather resistance, poor initial viscosity, large shrinkage, brittleness, water resistance, and easy aging. Artificial boards produced with urea-formaldehyde resin release formaldehyde during the manufacturing and use process. problem, so it must be modified.

Puka tono
Ka taea te whakamahi i roto i nga hua kaore e hiahiatia kia kaha te patu i te wai me nga taonga o te wai, nga riihi, nga miihini, nga papapa o ia ra, ka taea hoki te whakamahi i roto i te hanga papaa.

Urea-formaldehyde resin is the most commonly used type of adhesive. Ina koa ko nga momo papa whakairo i roto i te umanga tukatuka rakau, Urea-formaldehyde ano me ana pūkete hua kua whakarerekehia mo te 90% o te whakamahi moni.