Carbon black graphitization modification method
A graphitization and graphitization furnace technology, applied in the direction of fibrous fillers, etc., can solve the problems of large environmental pollution, high cost, and complicated preparation process
Pending Publication Date: 2021-12-10
江西威尔士科技发展有限公司
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Although Chinese patent documents CN107022112A (a method for grapheneizing the surface of carbon black) and CN112852190A (a graphene-coated carbon black material and its preparation method) can form a graphene coating on the surface of carbon black, thereby improving the carbon black surface activity, but did not change the distribution structure of carbon black atoms; there are many defects such as complex preparation process, high cost, and large environmental pollution
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[0013] The present invention will be further described below in conjunction with specific embodiment:
[0014] 1) Crush the dried carbon black to 0.3-0.5 mm, and sieve to ensure that the particle size of the carbon black under the sieve is 45-55 μm;
[0015] 2) Place the graphite crucible in a closed graphitization furnace;
[0016] 3) Fill the graphite crucible with carbon black under the sieve, and remove the air in the graphitization furnace;
[0017] 4) Heat the graphite crucible to 2800-3000°C, keep it warm for 3-5 hours, and cool with the furnace.
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The invention discloses a carbon black graphitization modification method, and belongs to a carbon black modification method. The invention aims to provide a method for improving the conductive and heat-conducting properties of carbon black. The method comprises the following steps: placing a graphite crucible in a closed graphitization furnace, wherein the graphite crucible is filled with carbon black, and air in the graphitization furnace is removed; and heating the graphite crucible to 2800-3000 DEG C, preserving heat for 3-5 hours, and cooling along with the furnace. According to the method, sulfur in the carbon black can be removed, the carbon black can be subjected to microcrystal structure change in a high-temperature solid phase, and aggregates which are aggregated into chain-shaped or grape-shaped structures among carbon black particles are subjected to partial graphitization change, so that a graphitized carbon atom structure has the function of a part of a graphite structure. The method is a method for carrying out graphitization modification on the carbon black.
Description
technical field [0001] The invention relates to a method for modifying carbon black, in particular to a method for graphitizing and modifying carbon black. Background technique [0002] Traditional carbon black modification methods are mainly based on changing the elemental composition and surface functional groups of carbon black, with the purpose of improving the dispersibility of carbon black and endowing carbon black with good hydrophilicity. Although Chinese patent documents CN107022112A (a method for grapheneizing the surface of carbon black) and CN112852190A (a graphene-coated carbon black material and its preparation method) can form a graphene coating on the surface of carbon black, thereby improving the carbon black However, it does not change the distribution structure of carbon black atoms; there are many defects such as complex preparation process, high cost, and large environmental pollution. Contents of the invention [0003] In view of the above-mentioned ...
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IPC IPC(8): C09C1/56
CPCC09C1/56
Inventor 张小华蒋新良
Owner 江西威尔士科技发展有限公司