发明名称 |
estrutura de núcleo e painel compósito |
摘要 |
This invention relates to a folded core structure made from paper comprising 20-85 weight percent of carbon fiber floc. The carbon fibers have a non-circular cross sectional aspect ratio of at least 1.5:1. The paper has a fiber volume fraction of at least 35%. The arithmetic mean length of the carbon fibers is at least 0.5 mm. and length weighted mean length at least 0.9 mm. |
申请公布号 |
BR112012011362(A2) |
申请公布日期 |
2016.04.19 |
申请号 |
BR20121111362 |
申请日期 |
2010.11.17 |
申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
DARIUSZ WLODZIMIERZ KAWKA;MIKHAIL R. LEVIT |
分类号 |
B31D3/00;B29D99/00;D21H13/50;D21H27/22 |
主分类号 |
B31D3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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