保水性聚合物在间接使用中的阻燃效果

IF 0.6 4区农林科学 Q4 FORESTRY

Revista Arvore Pub Date : 2020-01-01 DOI:10.1590/1806-908820200000029

D. C. Lima, A. P. Souza, J. F. Keffer, Luana Bouvié, C. C. Martim, Brena Geliane Ferneda

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引用次数: 4

摘要

阻燃剂的使用提高了扑灭森林火灾的效率，然而，在巴西，它仍然存在环境污染、制备建议和缺乏监管方面的不确定性。在这种情况下，保水聚合物等替代产品可以减少水的快速蒸发，也可以在减少火灾行为方面产生积极影响。评价了保水性聚合物在桉树人工林控制烧伤中作为短效阻燃剂(间接阻燃)的效果和方法。评估了五种浓度(在水中稀释)，三体积喷雾溶液和两次对该地区可用可燃材料的应用后时间。在该地区旱季，在上午10点至下午2点之间顺风进行了控制燃烧，并进行了微气象和火灾行为评估(火焰传播速度和火焰长度)。增加保水聚合物的喷雾量和浓度，减少了火灾的蔓延。在桉木可燃材料中，考虑喷雾量为2.0 L m-2，浓度为0.0060%(在水中稀释)，保水性聚合物可作为短期阻燃剂(应用后2小时有效)。

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EFFECTIVENESS OF WATER-RETAINING POLYMER AS FIRE RETARDANT IN INDIRECT USE

ABSTRACT The use of fire retardants increases efficiency in fighting forest fires, however, it still presents uncertainties regarding environmental contamination, recommendations for preparation, and it lack of regulation in Brazil. In this scenario, alternative products such as water-retaining polymers, that can reduce the rapid evaporation of water, can also have positive effects in terms of reducing fire behavior. Efficiency and ways of using the water-retaining polymer as a short-duration fire retardant (indirect combat) in controlled burns in eucalyptus plantations were evaluated. Five concentrations (dilution in water), three volumes of spray solution, and two post-application times on the combustible material available in the area were evaluated. Controlled burns were conducted downwind, between 10 am and 2 pm, during dry season in the region, with micrometeorological and fire behavior assessments (fire propagation speed and length of flames). Increased spray volume and concentration of water-retaining polymer led to reductions in the spread of fire. In eucalyptus combustible material, the water-retaining polymer can be used as a fire retardant of short duration (effective up to two hours after application), considering a spray volume of 2.0 L m-2 and concentration of 0.0060% (diluted in water).

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来源期刊

Revista Arvore FORESTRY-

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： A Revista Árvore é um veículo de comunicação científica da Sociedade de Investigações Florestais – SIF. O jornal é de acesso gratuito, revisado por pares, que publica bimestralmente trabalhos científicos originais no campo da Ciência Florestal. As áreas temáticas para publicação são: Ambiência e Conservação da Natureza, Manejo Florestal, Silvicultura e Tecnologia da Madeira e Utilização de Produtos Florestais. A política editorial visa manter alta conduta ética em relação à publicação e aos seus funcionários, rigor na qualidade dos artigos científicos, seleção de revisores qualificados, respeito profissional aos autores e processo de tomada de decisão imparcial. A Revista Árvore publica artigos apenas em inglês. Artigos de revisão podem ser publicados se houver uma discussão relevante resumindo o estado da arte sobre o assunto. A revisão estrita da literatura não é aceita.