| 摘要 |
FIELD: polymer materials. ^ SUBSTANCE: invention relates to polymer binders serving as base in manufacture of wood boards and plywood. Binder comprises urea-formaldehyde oligomer, curing agent, water and, according to first embodiment, additionally contains AlO(OH), amorphous AlO(OH)+Al2O3, and gamma-Al2O3. According to second embodiment, binder additionally contains Al(OH)3. ^ EFFECT: increased strength of glue joint, accelerated curing process, and shortened wood board compaction time. ^ 2 cl, 1 tbl, 6 ex |
