Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Dielectric ceramic special-shaped part and preparation method thereof
The invention discloses a dielectric ceramic special-shaped part. The dielectric ceramic special-shaped part is prepared from the following raw materials: a matrix, high-temperature plastic, low-temperature plastic, wax and a surfactant; the matrix is dielectric ceramic powder; the high-temperature plastic comprises polyamide, polyetherimide powder and polymaleimide powder; and the low-temperature plastic comprises polyethylene, maleic anhydride grafted polyethylene and an ethylene-vinyl acetate copolymer. According to the dielectric ceramic special-shaped part, high-temperature plastic and low-temperature plastic are added, the glass transition temperature of the high-temperature plastic is higher than that of the low-temperature plastic, and when the glass transition temperature of the high-temperature plastic is not reached, the high-temperature plastic serves as a framework of a green body. In the heating process, the low-temperature plastic is melted and softened before the high-temperature plastic, the high-temperature plastic is gradually softened along with higher and higher temperature, and the low-temperature plastic is carbonized and hardened to form a framework, so that the deformation of the dielectric ceramic body can be reduced. The special-shaped part is degreased and then sintered in the same sintering furnace after being subjected to injection molding, is suitable for preparing dielectric ceramic workpieces with the diameter being 50 mm or above, and can keep higher shape precision.
本发明公开了一种介质陶瓷异形件，原料包括基体、高温塑料、低温塑料、蜡类和表面活性剂；基体为介质陶瓷粉；高温塑料包括聚酰胺、聚醚酰亚胺粉和聚马来酰亚胺粉；低温塑料包括聚乙烯、马来酸酐接枝聚乙烯和乙烯‑醋酸乙烯共聚物。该介质陶瓷异形件通过加入高温塑料和低温塑料，高温塑料的玻璃化温度高于低温塑料，高温塑料在未达到玻璃化温度时，高温塑料作为坯体的骨架。在加温过程中，低温塑料先于高温塑料融化变软，随着温度越来越高，高温塑料逐渐变软，低温塑料碳化变硬形成制成骨架，能减少介质陶瓷坯体的变形。该异形件注射定型后在同一烧结炉中先脱脂后烧结，适用于制备50mm以上的介质陶瓷工件，还能保持更高的形状精度。
Dielectric ceramic special-shaped part and preparation method thereof
The invention discloses a dielectric ceramic special-shaped part. The dielectric ceramic special-shaped part is prepared from the following raw materials: a matrix, high-temperature plastic, low-temperature plastic, wax and a surfactant; the matrix is dielectric ceramic powder; the high-temperature plastic comprises polyamide, polyetherimide powder and polymaleimide powder; and the low-temperature plastic comprises polyethylene, maleic anhydride grafted polyethylene and an ethylene-vinyl acetate copolymer. According to the dielectric ceramic special-shaped part, high-temperature plastic and low-temperature plastic are added, the glass transition temperature of the high-temperature plastic is higher than that of the low-temperature plastic, and when the glass transition temperature of the high-temperature plastic is not reached, the high-temperature plastic serves as a framework of a green body. In the heating process, the low-temperature plastic is melted and softened before the high-temperature plastic, the high-temperature plastic is gradually softened along with higher and higher temperature, and the low-temperature plastic is carbonized and hardened to form a framework, so that the deformation of the dielectric ceramic body can be reduced. The special-shaped part is degreased and then sintered in the same sintering furnace after being subjected to injection molding, is suitable for preparing dielectric ceramic workpieces with the diameter being 50 mm or above, and can keep higher shape precision.
本发明公开了一种介质陶瓷异形件，原料包括基体、高温塑料、低温塑料、蜡类和表面活性剂；基体为介质陶瓷粉；高温塑料包括聚酰胺、聚醚酰亚胺粉和聚马来酰亚胺粉；低温塑料包括聚乙烯、马来酸酐接枝聚乙烯和乙烯‑醋酸乙烯共聚物。该介质陶瓷异形件通过加入高温塑料和低温塑料，高温塑料的玻璃化温度高于低温塑料，高温塑料在未达到玻璃化温度时，高温塑料作为坯体的骨架。在加温过程中，低温塑料先于高温塑料融化变软，随着温度越来越高，高温塑料逐渐变软，低温塑料碳化变硬形成制成骨架，能减少介质陶瓷坯体的变形。该异形件注射定型后在同一烧结炉中先脱脂后烧结，适用于制备50mm以上的介质陶瓷工件，还能保持更高的形状精度。
Dielectric ceramic special-shaped part and preparation method thereof
一种介质陶瓷异形件及其制备方法
XIE YIPENG (Autor:in) / FU RENMIN (Autor:in) / XUE WEIZHI (Autor:in)
26.10.2021
Patent
Elektronische Ressource
Chinesisch
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