마닐라 삼/비닐에스터 복합재료의 내화성 연구
A Study on Fire Resistance of Abaca/Vinyl-ester Composites
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초록
향상된 특성을 갖는 환경친화적인 복합재료의 개발은 고분자재료의 미래에 있어 필수적이며, 부분적으로또는 완전히 재생가능한 기지재 또는 보강재에 단지 몇 %의 첨가제를 첨가함으로써 쉽게 제작할 수 있다. 본 연구에서는 마닐라삼 섬유를 보강재로, 비닐에스터를 기지재로 사용하였으며, VARTM 공정을 이용하여 복합재료를제조하였다. 또한 마닐라삼 섬유의 알칼리표면처리를 수행하고, APP, HNT를 난연제를 첨가함으로써 기계적 물성과 난연 물성을 향상시키고자 하였다. 실험을 통하여 표면처리가 천연섬유의 친수성을 감소시키고 소수성인 기지재와의 계면접착력을 향상시켰으며, 이는 개발된 복합재료의 기계적 물성 향상을 이끌었다. 유사하게, 복합재료의 난연성도 난연제의 함량이 증가함에 따라 크게 향상되는 결과를 얻을 수 있었다.
Abstract
Eco-convivial composites with improved properties are essential to present polymer scenario and can be made easily by replacing partially/completely renewable materials either matrix or reinforcement along with few % of additives. In these investigations, Abaca fabric have been used as reinforcement for manufacturing of Vinyl ester composites through VARTM technique and study the effect of alkali surface treatment of abaca fabric and flame retardant additives i.e., ammonium polyphosphate (APP) with halloysite nano-clay (HNT) on mechanical and flame retardant properties. The results concluded that, surface treatment deceased the hydrophilic nature of fabric and enhanced the interfacial bonding with hydrophobic matrix and eventually increased mechanical properties slightly of developed composites. Similarly, the flame retardancy of the composites improved significantly and increases the burning time by varying the wt% of filler concentration.
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