Fire-resistant thermoplastic composite structure
    8.
    发明授权
    Fire-resistant thermoplastic composite structure 失效
    耐火热塑复合结构

    公开(公告)号:US5160784A

    公开(公告)日:1992-11-03

    申请号:US724570

    申请日:1991-06-28

    摘要: Disclosed is a coextruded, fire-resistant, composite structure of adjacent, alternating first and second layers wherein the first layer comprises a thermoplastic foam and second layer a thermoplastic material with such second layers containing a quantity of a brominated fire retardant sufficient to enhance the flame retardancy of the composite structure. Incorporation of the fire retardant into the thermoplastic material layers allows a fire-resistant foam structure to be made using water as a blowing agent for the first layers while avoiding serious corrosion problems encountered when incorporating both brominated fire retardants and water in the same foam structure. Further disclosed are processes for making the above described composite structure. Further disclosed is a composite flow melt expandable into the above-described composite structure.

    摘要翻译: 公开了相邻的,交替的第一和第二层的共挤出的耐火复合结构,其中第一层包括热塑性泡沫,第二层是具有这样的第二层的热塑性材料,其含有足以增强火焰的量的溴化阻燃剂 复合结构的阻滞性。 将阻燃剂加入到热塑性材料层中可以使用水作为第一层的发泡剂制成耐火泡沫结构,同时避免在将溴化阻燃剂和水混合在相同的泡沫结构中时遇到的严重腐蚀问题。 进一步公开的是制造上述复合结构的方法。 还公开了可扩展成上述复合结构的复合流动熔融物。