Journal of Thermal Analysis and Calorimetry ( IF 3.0 ) Pub Date : 2023-11-18 , DOI: 10.1007/s10973-023-12664-6 Dan Zhou , Pengyuan Fan , Zhigen Wu
Bamboo powder has a high risk of fire and dust explosion during production, manufacturing, transportation and storage. It is of great significance to study the combustion characteristics of bamboo powder and its influencing factors for finding suitable flame retardants. So far, the relative study is more focused on bamboo rather than bamboo powder. In this paper, the combustion characteristics of bamboo powder were measured by TGA. Ignition temperature, burnout temperature, combustion rate and comprehensive combustion index were used as evaluation criteria. The influence of particle size and heating rate was quantitatively analyzed. The results showed that the ignition and burnout temperature increased with the increase in heating rate. The S value at the heating rate of 40 °C min−1 was 22 times of that at 5 °C min−1. The finer the particle size, the higher the S value, and the S value of 400-mesh bamboo powder can reach 2.0 × 10–5. The flame retardant properties of six inorganic compounds on bamboo powder were studied. According to the S value, the order of flame retardant properties at the best concentration was CaCl2 ˃ NH4H2PO4 ˃ MgCl2 ˃ Na3PO4 ˃ NH4Cl ˃ APP. Among them, 33% CaCl2 had the best flame retardancy.
中文翻译:
竹粉燃烧特性及阻燃剂研究
竹粉在生产、制造、运输和储存过程中具有较高的火灾和粉尘爆炸危险。研究竹粉的燃烧特性及其影响因素对于寻找合适的阻燃剂具有重要意义。到目前为止,相关研究更多地集中在竹子上,而不是竹粉。本文采用TGA测定了竹粉的燃烧特性。以着火温度、燃尽温度、燃烧速率和综合燃烧指数作为评价标准。定量分析了粒径和加热速率的影响。结果表明,着火温度和燃尽温度随着升温速率的增加而升高。升温速率40℃min -1 时的S值是5℃min -1时的22倍。粒径越细,S值越高,400目竹粉的S值可达2.0× 10-5。研究了六种无机化合物对竹粉的阻燃性能。根据S值,最佳浓度的阻燃性能顺序为CaCl 2 ˃ NH 4 H 2 PO 4 ˃ MgCl 2 ˃ Na 3 PO 4 ˃ NH 4 Cl ˃ APP。其中33%的CaCl 2阻燃性能最好。