INTEGRATED FIRE PROTECTION

PublishTime：2024-12-30

●It’s a difficult conflict to resolve: although safety is one of our basic human needs, we generally do not want to be made aware of safety precautions. Safety should be a given and, ideally, invisible. Take fire safety, for example: while fire extinguishers, smoke detectors and sprinkler systems convey a sense of security when we see them, they also remind us that the potential danger is real, and taint our sense of security with ambivalence. Fire safety is not the only requirement that needs to be met in building construction – energy, design and economic factors have to be harmonized as well. In modern building construction, aluminum composite panels have become an established component of exterior surface design. Their advantages are obvious: they are easy to transport and process, and can be incorporated into virtually any design through the use of appropriate exterior coatings. They also stand up to inclement weather, and with an insulating layer, they act as a thermal barrier.
●PLASTIC CORE FOR INSULATION
■Yet this is where a particular challenge presents itself: in order to ensure that the aluminum panels do not act as a cold bridge and encourage heat loss, an insulating plastic layer is sandwiched between two aluminum layers. This layer, which is typically made of polyethylenes, thermally separates the two outer panels from one another. Polyethylenes, however, are flammable. To ensure that the panel’s fire-safety characteris-tics do not suffer as a result, fire-retardant fillers such as aluminum or magnesium hydroxide are incorporated. “These can account for up to 70% of the polyethylene layer,” says Dr. Klaus Pohmer, director of Global Business Development at WACKER’s Performance Silicones business unit. “Polymers with this much filler are more difficult to process.”
■As a result, pressure mounts at the extruder head, which can lead to decomposition of the aluminum hydroxide. Not only does the machine’s electricity consumption shoot up as a result; the thermal stress on the compound rises too – so much, in fact, that some of the aluminum hydroxide breaks down. Furthermore, die drool forms at the extruder head as material collects unchecked at the edge of the die.
■These problems can be solved, however. Compounds are used wherever well-known, pure plastics do not possess the desired properties. Developing new, specialty plastics is a complex, costly process, and manufacturers would prefer to alter established materials such as polyethylene and polypropylene with fill-ers and additives to suit the application. This approach generally produces quicker results, yielding plastics that have been optimized, for instance, for light fastness, surface properties, physical and chemical stability, or, of relevance here, flame retardancy.

Brand of Product：	WACKER
Part#：	GENIOPLAST ® Pellet S More Part#
Product Category：	Aluminum composite panels 、 silicone additive More
Application：	[ building exteriors ][ cable sheathing ] More
Data Type：	Supplier and Product Introduction More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	2016/5/3
Version Number：
Data Encoding：
Data Size：	786 KB

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