醇酸清漆对典型装饰木材燃烧特性和生烟特性的影响
发布时间：2019-06-14 02:32
【摘要】：为了探讨醇酸清漆对典型装饰木材火灾危险性的影响,利用热重分析、差热分析、木垛法、隧道法和塑料烟密度仪对装饰木材的燃烧性能、热解特性和生烟特性进行了分析。结果表明,木材及其表面涂覆的醇酸清漆主要热失重发生在200~500℃,其中木材的热解过程为先吸热、后放热的过程,而醇酸清漆为吸热过程。与未涂覆清漆的木材相比,清漆使木材在燃烧过程中质量损失、有焰燃烧时间及火焰传播比值明显增加。同时,醇酸清漆的烯烃结构和苯环结构还导致木材的比光密度、质量光密度增大,烟气危害增大,从而进一步增大了火灾危险性。此外,装饰木材的生烟特性还受火焰条件和辐射功率的影响,高辐射功率和有焰条件下材料的比光密度和质量光密度均较低。
[Abstract]:In order to investigate the effect of alkyd varnish on the fire risk of typical decorative wood, the combustion performance, pyrolysis characteristics and smoke generation characteristics of decorative wood were analyzed by thermogravimetric analysis, differential thermal analysis, wood stacking method, tunnel method and plastic smoke densitometer. The results show that the main thermogravimetric process of alkyd varnish coated on wood and its surface occurs at 200 鈩，
本文编号：2499028
[Abstract]:In order to investigate the effect of alkyd varnish on the fire risk of typical decorative wood, the combustion performance, pyrolysis characteristics and smoke generation characteristics of decorative wood were analyzed by thermogravimetric analysis, differential thermal analysis, wood stacking method, tunnel method and plastic smoke densitometer. The results show that the main thermogravimetric process of alkyd varnish coated on wood and its surface occurs at 200 鈩，
本文编号：2499028
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