公开(公告)号：US3885010A

公开(公告)日：1975-05-20

申请号：US31191372

申请日：1972-12-04

Applicant: DYNAMIT NOBEL AG

Inventor： BRUNING KLAUS ,  JUNGER HANS ,  PUNGS WOLFGANG ,  RHEINFELD PETER ,  WEISSENFELS FRANZ ,  WIENAND MICHAEL

IPC: B01F7/24 ,  B29B7/74 ,  B29C44/30 ,  B32B5/18 ,  B32B11/06 ,  C08G53/10

CPC classification number: B29C44/308 ,  B01F7/24 ,  B29B7/7414 ,  B29C44/30 ,  Y10S264/02

Abstract: A process for the continuous manufacture of phenolic resin foam in an endless sheet which includes mixing expandable liquid phenolic resin with a blowing agent and an acid-containing curing agent, optionally with the addition of additives, and processing of the mixture in a temperature-controllable double belt press. The process also comprises cooling the phenolic resin to a temperature of from about 8* to 15*C., admixing a blowing agent under a high pressure with said resin to form a resin premix, mixing said resin premix with a curing agent resin to form a resin premix, mixing said resin premix with a curing agent and other foam additives to form a curable reaction mixture, continuously applying said mixture uniformily onto a moving substrate, covering the mixture on said substrate with a continuous protective layer, passing the covered mixture into the double belt press, and foaming the mixture under pressure until a desired sheet thickness has been obtained.

Abstract translation: 一种用于在环形片中连续制造酚醛树脂泡沫的方法，其包括将可膨胀液体酚醛树脂与发泡剂和含酸固化剂混合，任选地加入添加剂，以及将该混合物在温度可控 双皮带压机。 该方法还包括将酚醛树脂冷却至约8℃至15℃的温度，将高压发泡剂与所述树脂混合以形成树脂预混物，将所述树脂预混物与固化剂树脂混合以形成 树脂预混物，将所述树脂预混料与固化剂和其它泡沫添加剂混合以形成可固化反应混合物，将所述混合物连续地均匀地施加到移动的基底上，用连续的保护层覆盖所述基底上的混合物，将覆盖的混合物 双层带压机，并在压力下使混合物发泡，直到获得所需的片材厚度。