In order to improve the high-temperature oxidation resistance of the traditional phenolic resin binder, nickel nitrate was added into the phenolic resin as the catalyst precursor, while carbon nanotubes (CNTs) could be in-situ formed inside the pyrolytic carbons during the pyrolysis process. The influence of pyrolysis temperatures on the formation of CNTs in pyrolytic carbons was investigated. The results showed that CNTs with the diameter of 20–40 nm were formed in pyrolytic carbons, while the nickel nitrate and the gases released through the pyrolysis of phenolic resin were respectively served as the catalyst and the carbon sources. Meanwhile, the increased temperature could promote the formation of the CNTs, and further improve the graphitization degree and the high-temperature oxidation resistance of the pyrolytic carbons. The high-temperature oxidation resistance of corundum graphite composite materials could be effectively improved by using phenolic resin with nickel nitrate as the binder, which demonstrates it to be a promising binder for high-temperature application.

为了提高传统酚醛树脂粘合剂的高温抗氧化性，在酚醛树脂中加入硝酸镍作为催化剂前体，同时在热解过程中可以在热解碳内原位形成碳纳米管（CNT）。 。研究了热解温度对热解碳中碳纳米管形成的影响。结果表明，在热解碳中形成了直径为20–40 nm的CNT，而硝酸镍和通过酚醛树脂热解释放的气体分别充当了催化剂和碳源。同时，升高的温度可以促进CNT的形成，并进一步提高热解碳的石墨化度和高温抗氧化性。