| 摘要 |
<p>A structural mat matrix comprises (a) a substrate which consists essentially of from 80 % to 99 % by weight fiberglass fibers and from 20 % to 1 % by weight wood pulp and (b) a binder which consists essentially of from 80 % to 95 % by weight urea formaldehyde and from 20 % to 5 % by weight acrylic copolymer. The binder bonds the substrate fiberglass fibers and wood pulp together and comprises from 5 % to 15 % by weight of said matrix, preferably 10 % by weight of the matrix.</p> |
