Core materials are used extensively throughout the composites industry to fabricate stiff and yet lightweight composites products. Thermal conductivity, sound insulation, and fire resistance can also be improved by use of the proper core material. The use of core materials is also called sandwich construction. The “sandwich” consists of a face skin laminate, the core material, and the back skin laminate. The use of a core creates a thicker laminate, significantly increase stiffness and flexural strength with a minimal increase in weight.
There are a number of types of core materials available, with a wide range of properties and costs:
Vifaa vya msingi hutumiwa sana katika sekta ya composites kutengeneza bidhaa ngumu na bado nyepesi za composites. Uendeshaji wa joto, kutenganisha sauti, na upinzani wa moto pia waweza kuboreshwa kwa kutumia vifaa vya msingi vinavyofaa. Matumizi ya vifaa vya msingi pia huitwa ujenzi wa sandwich. <unk>sandwich<unk> inajumuisha uso ngozi laminate, nyenzo ya msingi, na nyuma ngozi laminate. Matumizi ya msingi inajenga laminate nene, kwa kiasi kikubwa kuongeza ugumu na flexural nguvu na ongezeko ndogo ya uzito. Kuna idadi ya aina ya vifaa vya msingi inapatikana, na mbalimbali ya mali na gharama: