首页> 美国政府科技报告 >Process for Covering the Surface of Porous Powders or Bodies, in Particular, with Protective or Decorative Coatings
【24h】

Process for Covering the Surface of Porous Powders or Bodies, in Particular, with Protective or Decorative Coatings

机译:用于覆盖多孔粉末或体的表面的方法,特别是用保护性或装饰性涂层

获取原文

摘要

The material to be covered is put in contact with a gas in the supercritical state as a fluid medium, which contains the solid or liquid covering material in dissolved form. The temperature and pressure of the fluid medium are selected so that the thickness of the covering layer is only one or several molecule layers. The fluid medium is circulated between the covering substance and the material to be covered. The material to be covered and the covering substance with the fluid medium are located in a pressure vessel and the temperature of the material to be covered is set at a higher value than the temperature of the covering substance. Dissolution of the covering substance in the fluid medium takes place by extraction of this covering substance from a solid or liquid mixture of this substance or by extraction from a powdery or porous material. A catalyst material is used as the material to be covered. The covering substance is a saturated or unsaturated hydrocarbon, preferably a fat or a fat derivative, a plastic from the group of polyalkanes, polyalkenes or the polyvinyl halides, or a pigment toner. (ERA citation 12:004244)

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号