文献类型：专利

英文题名：Preparation of carbon foam used as thermal-insulation material for building, involves heating coal tar pitch, oxidizing, crushing resultant material, adding organic solvent, foaming agent and reinforcing agent, mixing and reacting

作者：JIN J;LIU C;XIA J;TAO J;ZHANG H;ZHAN L;ZHANG X

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY;[2]SHANGHAI BAOSTEEL CHEM CO LTD

申请号：CN104445136-B

公开日：2016-06-15

语种：英文

收录：DERWENT

摘要：NOVELTY - Preparation of carbon foam involves placing coal tar pitch into a reactor, heating at 200-300 degrees C for 0.5-10 hours, performing air oxidation process in 100-300 rpm and air flow rate of 100-1000 mL/minute, obtaining high-softening point pitch, crushing the resultant material to particle size of 5-1000 mu m, adding 1-5000 g/L organic solvent, magnetically stirring at 25-100 degrees C for 2-10 hours, filtering, drying, adding foaming agent and reinforcing agent, mixing, adding 10-500 g resultant mixture into a 0.5-5 L reactor, sealing the reactor and reacting at 300-500 degrees C for 0.5-10 hours. USE - Preparation of carbon foam used as thermal-insulation material for building. ADVANTAGE - The method provides carbon foam by economical process with reduced energy consumption. DETAILED DESCRIPTION - Preparation of carbon foam involves placing coal tar pitch into a reactor, heating at 200-300 degrees C for 0.5-10 hours in rate of 5-10 degrees C/minute, performing air oxidation process in 100-300 rpm and air flow rate of 100-1000 mL/minute, obtaining high-softening point pitch, crushing the resultant material to particle size of 5-1000 mu m, adding 1-5000 g/L organic solvent, magnetically stirring at 25-100 degrees C for 2-10 hours, filtering, drying, adding foaming agent and reinforcing agent, mixing, adding 10-500 g resultant mixture into a 0.5-5 L reactor, sealing the reactor and reacting at 300-500 degrees C for 0.5-10 hours in 1-20 degrees C/minute. The weight ratio of foaming agent and high-softening point pitch is 1-20:100. The weight ratio of reinforcing agent and high-softening point pitch is 2-20:100.