FIELD: chemistry.
SUBSTANCE: invention relates to composite materials with high resistance to damage caused by lighting strikes. A prepreg comprising one structural layer of electroconductive unidirectional fibres and a first external layer of cured resin, substantially free of structural fibres, and optionally a second external layer of cured resin, substantially free of structural fibres, wherein the total thickness of the first and second external resin layers at said point is at least 10 mcm on average and varies at least in the range of 50% to 120% of the average value, and where said first external layer contains electroconductive particles.
EFFECT: invention improves impact strength of the material.
19 cl, 3 dwg, 4 tbl
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| IMPROVEMENT OF COMPOSITE MATERIALS | 2013 |
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| METHOD OF LAMINAR MATERIAL FABRICATION | 2011 |
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| PERFECTED COMPOSITES | 2009 |
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| SOLVENT-RESISTANT EPOXY RESIN WITH TOUGHNESS INCREASED BY MEANS OF THERMOPLASTS | 2011 |
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| COMPOSITE MATERIALS WITH ELECTRICALLY CONDUCTIVE AND DELAMINATION RESISTANCE PROPERTIES | 2014 |
|
RU2678043C1 |
| PREPREG MATERIAL ABLE TO PROVIDE PROTECTION AGAINST LIGHTNING STRIKE AND RESISTANCE TO BURN-THROUGH | 2016 |
|
RU2724263C2 |
| COMPOSITE MATERIALS | 2013 |
|
RU2631299C2 |
