公开(公告)号：KR1020010009582A

公开(公告)日：2001-02-05

申请号：KR1019990028003

申请日：1999-07-12

Applicant: 국방과학연구소

Inventor： 백용기 ,  곽상주 ,  박학성 ,  윤종욱

IPC: C04B35/14 ,  C04B35/10 ,  C04B35/48

CPC classification number: C04B30/02 ,  C04B38/0038 ,  C04B14/303 ,  C04B14/4656 ,  C04B24/383 ,  C04B40/0268 ,  C04B14/062 ,  C04B14/4637 ,  C04B24/2652 ,  C04B35/803

Abstract: PURPOSE: A heat insulating material, resulting from binding inorganic and organic materials to heat resistance Al2O3-SiO2-based ceramic fibers, is provided which has low density and high strength at high temperature by positioning inorganic binder in the contact point between fibers selectively. CONSTITUTION: The heat insulating material comprising Al2O3-SiO2-based ceramic fiber doped with Zr, and inorganic and organic binders is manufactured by the following steps: preparing ceramic fiber having a length of 100-900micrometer, keeping less than 1wt.% of fined fiber having larger than 50micrometer of particle diameter and 120-350km/m3 of density, which contains 35-47% of SiO2, 30-50wt.% of Al2O3 and 15-23% of ZrO2; adding 3-10wt.%(based on the fiber) of inorganic binder such as colloidal SiO2 or colloidal Al2O3, and 1.7-3.3wt.% of organic binder such as methyl cellulose or polyacryl amide-based polymer; forming in vacuum; drying and thermal-treating at 1000-1400deg.C.

Abstract translation: 目的：通过将无机和有机材料与耐热Al2O3-SiO2基陶瓷纤维结合得到的绝热材料，通过在无机粘合剂选择性地接触纤维之间定位，在高温下具有低密度和高强度。 构成：包含掺杂有Zr的Al 2 O 3 -SiO 2系陶瓷纤维的绝热材料以及无机和有机粘合剂通过以下步骤制造：制备长度为100-900微米的陶瓷纤维，保持小于1重量％的精细纤维 具有大于50微米的粒径和120-350km / m3的密度，其含有35-47％的SiO 2，30-50重量％的Al 2 O 3和15-23重量％的ZrO 2; 加入3-10重量％（基于纤维）的无机粘合剂如胶态SiO 2或胶体Al 2 O 3，和1.7-3.3重量％的有机粘合剂如甲基纤维素或聚丙烯酰胺基聚合物; 真空成型 干燥和热处理1000-1400℃。