Obtenção e caracterização de um eco-compósito à base de látex e bainha da palha do coqueiro para isolamento térmico e acústico

With the emergence of new technologies, has grown the need to use new materials, and this has intensified research on the collection and use of materials from renewable sources, is to reduce production costs and / or environmental impact. In this context, it was found that the sheath coconut straw, can be utilized as raw material for the production of a eco-composite that can be used as a thermal and acoustic insulator. After selected from the coconut sheaths were subjected to treatment with aqueous 2 % sodium hydroxide (NaOH). The composite study was produced with the sheath and coconut natural latex, with coconut sheath percentage in the proportions 15%, 25% and 35% of the total compound volume. Physical, thermal and acoustic properties of the composites were analyzed in order to obtain data on the use of viability as thermoacoustic insulation. The CP15 composites, CP25 and CP35 showed thermal conductivity 0.188 W/m.K, 0.155 W/m.K and 0.150 W/m.K, respectively. It can be applied as thermal insulation in hot systems to 200 ° C. The CP35 composite was more efficient as a thermal and acoustic insulation, providing 20% noise reduction, 31% and 34% for frequencies of 1 kHz, 2 kHz and 4 kHz, respectively. The analyzes were based on ABNT, ASTM, UL. Based on these results, it can be concluded that the eco-composite produced the hem of coconut can be used as thermal and acoustic insulation. Thus, it gives a more noble end to this material, which most often is burned or disposed of improperly in the environment.

Obtenção e caracterização de um eco-compósito à base de látex e bainha da palha do coqueiro para isolamento térmico e acústico

With the emergence of new technologies, has grown the need to use new materials, and this has intensified research on the collection and use of materials from renewable sources, is to reduce production costs and / or environmental impact. In this context, it was found that the sheath coconut straw, can be utilized as raw material for the production of a eco-composite that can be used as a thermal and acoustic insulator. After selected from the coconut sheaths were subjected to treatment with aqueous 2 % sodium hydroxide (NaOH). The composite study was produced with the sheath and coconut natural latex, with coconut sheath percentage in the proportions 15%, 25% and 35% of the total compound volume. Physical, thermal and acoustic properties of the composites were analyzed in order to obtain data on the use of viability as thermoacoustic insulation. The CP15 composites, CP25 and CP35 showed thermal conductivity 0.188 W/m.K, 0.155 W/m.K and 0.150 W/m.K, respectively. It can be applied as thermal insulation in hot systems to 200 ° C. The CP35 composite was more efficient as a thermal and acoustic insulation, providing 20% noise reduction, 31% and 34% for frequencies of 1 kHz, 2 kHz and 4 kHz, respectively. The analyzes were based on ABNT, ASTM, UL. Based on these results, it can be concluded that the eco-composite produced the hem of coconut can be used as thermal and acoustic insulation. Thus, it gives a more noble end to this material, which most often is burned or disposed of improperly in the environment.

BROCA-DO-OLHO-DO-COQUEIRO: praga potencial para as palmeiras com fins de produção de palmito.

2010

Mancha foliar do coqueiro causada por Bipolaris incurvata.

Descricao dos sintomas da mancha foliar do coqueiro, causada por Bipolaris incurvata. Como medida de controle, e recomendado efetuar a correcao do solo com calcario dolomitico e prover adubacoes adequadas, principalmente com materia organica e potassio, na cova de plantio, dentre outras medidas.

Deficiência de boro em coqueiro - sintomas e correção.

Informações técnicas sobre sintomas e correção de deficiência de boro em coqueiro (Cocos nucifera), em Manaus-AM, Brasil.

Murcha-de-Phytomonas do coqueiro no Amazonas.

Distribuição e incidência da doença. Sintomas. Prospecção e sobrevivência de Phytomonas staheli em coqueiro. Procedimentos para a coleta e envio de material para diagnose. Controle da doença. Controle preventivo. Controle dos insetos vetores.

Água necessária no período seco para irrigação do coqueiro anão no Distrito Federal.

2008

Irrigação por microaspersão do coqueiro anão no Distrito Federal.

2008

Avaliação da incidência de pragas em híbridos de coqueiro (Cocos nucifera L.) no município de Umbauba/SE.

1997

Quantificação e isolamento de bactérias diazotróficas associadas a coqueiro (Cocos nucifera L.).

1997

Efeito de diferentes concentrações de Beauveria bassiana, na mortalidade de adultos da broca-do-olho-do-coqueiro.

1997

Identificação de demandas para a cultura do coqueiro.

1998

Danos causados pelo acaro aceria guerreronis a diferentes genótipos de coqueiro.

1998

Comportamento de híbridos de coqueiro em relação as doenças foliares.

1998

Caracterização morfológica reprodutiva do coqueiro gigante (Cocos nucifera L. var. Typica) em condições de sequeiro.

1998