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    • 3. 发明授权
    • Process for thermally expanding silicate-based material by an infrared
heat source
    • 通过红外线热源热膨胀硅酸盐系材料的方法
    • US4401586A
    • 1983-08-30
    • US298589
    • 1981-09-02
    • Hugh A. Ghiringhelli
    • Hugh A. Ghiringhelli
    • C04B20/06C04B21/00C04B35/16
    • C04B20/06
    • Silicate-based composition particles are rapidly and completely expanded to form an expanded, cellular particulate aggregate of maximum density in short periods of time at particle temperatures which are comparatively low, that is, 100.degree. C., compared to existing systems by the utilization of infrared heat sources, either gas or electric, to heat the silicate particles. The use of infrared energy operates in a surprisingly advantageous fashion when the expansion process is carried out on or in the presence of a surface having the capacity to act as a thermal mirror or absorber-reflector of the infrared radiation to make maximum utilization of the radiant energy by the creation of a radiation trap. Carbonaceous materials are preferred for producing such entrapment. A further significant aspect is the discovery of a time-radiation dependency. Thus, an optimum time of exposure for expansion-radiation wave length relationship can be determined so that one may have finite control over expansion of the particles at the least energy cost.
    • 基于硅酸盐的组合物颗粒快速且完全膨胀以在短时间内形成最大密度的膨胀的细胞颗粒聚集体,其颗粒温度相对较低,即100℃,与现有体系相比,通过使用 红外热源,无论是气体还是电气,以加热硅酸盐颗粒。 当膨胀过程在具有作为红外辐射的热镜或吸收反射体的表面的存在下进行时,红外能的使用以惊人的有利方式工作,以最大限度地利用辐射 通过创建辐射陷阱的能量。 碳质材料优选用于产生这种夹带。 另一个重要的方面是发现时间辐射依赖性。 因此,可以确定膨胀辐射波长关系的最佳曝光时间,使得可以以最小的能量成本对颗粒的膨胀进行有限的控制。