The evaporative casting of molten metals has been shown to produce castings having smooth surfaces with significantly less signs of carbon deposits thereon by using expandable vinyl aromatic polymer particles containing a bromine-attached aliphatic or aromatic flame retardant and optionally, an organic peroxide.
通过使用含有
溴连接脂肪族或芳香族阻燃剂以及有机过氧化物的可膨胀
乙烯基芳香族聚合物颗粒,熔融
金属的蒸发铸造已被证明可生产出表面光滑的铸件,其上的碳沉积迹象明显减少。