航空应用的泡沫核心材亚博网站下载料

Evonik的销售和营销总监Blake Juhl概述了Rohacell Stirid泡沫的属性和应用，并介绍了新的Rohacell Hero产品。

Could you give a brief overview of the ROHACELL rigid foam and typical applications that can see real benefits from using it?

More and more industries are discovering the benefits of designing structural components using sandwich construction. Strong internal support structures are needed for these applications, but the driver is most often the reduction of weight in the total structure.

As a robust and extremely lightweight core material, ROHACELL foam is increasingly the product of choice for sandwich designs. ROHACELL is primarily used as the inner supporting "core" sandwiched between the "skins" of the sandwich construction.

These skins are composed of fibers that include glass, carbon, Kelvar and other reinforcements that are impregnated with a number of resin systems, such as epoxy, phenolic, BMI, cyanate ester and others. Producing the finished sandwich requires the use of typical processes to cure the resin and combine it with the core.

最常见的是输注，或者使用预挖的高压釜固化。对于树脂的聚合而言，重要的是在适当的温度环境中施加精确的压力（飞机行业最常使用180°C）。最终结果是非常轻巧，但结构僵硬。

ROHACELL is widely recognized for its performance in the aerospace sector where light, strong and resilient structures are demanded. Aircraft, transportation and launch vehicles are typical target platforms. Flight control surfaces, rotor blades, radomes and satellite containment fairings are other common applications.

Rohacell泡沫核心世界上有新的发展吗？

我们认识到当今飞机行业面临的成本和效率挑战。非常轻巧的建筑结构可节省重量，从而提高飞机效率而不牺牲结构强度。如今，越来越多的A级和B零件正在三明治中建造。

A sandwich design using a ROHACELL foam core is one of the best options available and we continue to expand our product offerings to give designers the tools they require.

我们最新的产品介绍是Rohacell Hero-可提供51、71、110、150和200公斤/m的密度³（3.2、4.4、6.8、9.4、12.5磅/英尺³). This new addition to our product line is ideal for Class A and B parts in commercial aircraft and the OEMs agree.

Rohacell Hero提供了历史悠久的Rohacell产品所没有的？

英雄不仅满足飞机损坏可见性要求，同时提供所有Rohacell产品的众所周知的机械卓越性，而且可以在休息性能的伸长率上伸长，比我们其他任何一年级都高3倍。

我们在英雄发展方面的目标是解决行业对更高延长结构泡沫核心的需求。

结果是一种产品在休息时提供8％至10％的伸长率，具体取决于所选的产品密度。由于较高的伸长率，裂缝韧性（抗裂纹繁殖）也会增加。

Are there specific applications where ROHACELL HERO offers exceptional benefits for an aircraft structure or aircraft?

绝对地！所有飞机表面和盖子的要求都由刚度和稳健性驱动。这包括起落架门，腹部整流罩，飞行控制表面，辐射小组和纳塞尔，仅举几例。当飞机在飞行中，甚至在进行预定的维护时，所有这些部分的表面都会产生影响。

当发生任何类型的表面影响时，至关重要的是，可以通过简单的视觉检查轻松检测到损害。

英雄具有出色的断裂韧性，可以承受撞击事件，并且一旦发生冲击，损害的可见性也很高。英雄不仅提供了这种关键的损害耐受性和可见性优势，还可以提供零件成本降低生产的额外优势。

Why would a company select ROHACELL HERO over other sandwich core options, such as honeycomb structures?

不幸的是，具有典型的蜂窝芯的三明治溶液在服务功能上可能受到限制，并且也可能非常复杂。例如，加工蜂窝芯需要一个昂贵的两步固化周期，而所得的安装结构仍会遭受冻结损坏，无论它是否受到损坏。

Fraunhofer Institute最近进行的一项独立研究得出的结论是，Rohacell Hero不仅可以生存影响日常飞机飞行的典型情况，而且如果及其在影响结构时，可以轻松地看到和审查，以实现健康监测和飞行保证目的。

如果飞机零件的外皮肤遭受破坏，则100％的闭孔英雄核心不会吸收水，这对于使用蜂窝型核心的结构并非如此。

包括英雄在内的所有Rohacell泡沫核心的独特好处是同质和各向同性的特性，使其从各个方向机械稳定。

英雄不需要昂贵的核心稳定治疗周期，处理步骤或其他材料来关闭裸露的不稳定边缘。亚博网站下载

ROHACELL HERO is a solution designed for the challenges of the future in aircraft structural design. It starts with a professional consultation between us and the customer - we know our products and are ready to support both designers and manufacturing/production teams to help them realize how they can use ROHACELL to their advantage.

关于布雷克·朱尔

布雷克·朱尔is the Director of Sales and Marketing for Evonik Industries' ROHACELL® product line in the Americas.

He started his reinforced composites career after graduating from California State University at Northridge in 1987, and has been involved in processing, selling and marketing of advanced composite materials and related products ever since.

He has been employed with Evonik since 2001, and most recently was appointed Global Launch Manager for the newly developed ROHACELL® HERO Grade.