| 摘要 |
PURPOSE:To provide lightweight heat insulating board, which is excellent in flame retardancy and does not adversely affect people at comparatively low cost. CONSTITUTION:The flame-retardant heat insulating board concerned is obtained through self-bonding force, which develops at the expansion of phenolic foam made of resol-type phenolic resin under the condition the non-woven fabric consisting of 65wt.% of glass fiber, 15wt.% of acrylic latex and 20wt.% of aluminum hydroxide is laid in a form. The obtained heat insulating board has the flame retardant performance of second class flame retardant rating level. |
