| 摘要 |
<p>A pultrusion process employing a resole-resorcinol resin system, having a much improved pot life and much lower formaldehyde odor over similar existing systems where the resole contains not more than 6 %, preferably not more than 5 %, most preferably not more than about 4 % free formaldehyde. The phenol component of the resole can be substituted by nonyl or p-phenyl phenol to produce products of lower smoke emissions.</p> |
