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凡是遇火、受热、撞击、摩擦和氧化剂接触能着火的固体物质,统称为燃烧固体。一、决定固体物质水灾危险性的主要理化性质 1.熔点。绝大部分可燃物质,其燃烧都在蒸气和气体的状态下进行的。因此,熔点低的固体物质容易蒸发和气化,一般燃点较低,燃烧速度快。 2.燃点。燃点越低的物质,越易着火。因为它们在能量较小的热源或由于撞击、摩擦的作用下,能很快受热达到燃点。 3.自燃点。有些固体物质的自燃点比可燃热体或气体的自燃点都要低,一般在180～350℃之间。它们接触热源达到一定的温度,即使没有明火作用也能自燃。自燃点低的物质,危险性就大一些。许多可燃固
All solid materials that can catch fire when exposed to fire, heat, impact, friction, and oxidants are collectively referred to as burning solids. First, determine the main physical and chemical nature of the hazard of solid material flood 1. Melting point. Most of the flammable substances are burned under the condition of vapor and gas. Therefore, the solid material with a low melting point is easy to evaporate and gasify. Generally, the ignition point is lower and the burning rate is faster. 2. Burning point. The lower the ignition point, the easier it is to catch fire. Because they can be quickly heated to reach the ignition point under the effect of a smaller heat source or due to impact and friction. 3. Spontaneous ignition point. Some of the solids have a lower autoignition point than the combustible body or gas, and are generally between 180 and 350°C. They reach a certain temperature in contact with the heat source and can spontaneously ignite even without an open flame. The material with a low ignition point is more dangerous. Many flammable