废轮胎裂解炭黑的超细粉碎和表面改性及在NR中的应用

Superfine grinding and surface modification of carbon black from pyrolyzed waste tire and its application in NR compound

探讨超细粉碎和表面改性工艺对废轮胎裂解炭黑性能的影响及裂解炭黑在NR胶料中的应用。结果表明 ,裂解炭黑超细粉碎时 ,FZD型单转子超细气流分级机的最佳转速为 80 0r·min- 1 ,这时用袋收尘方式收集的超细裂解炭黑的中位粒径为 4 3 7μm ;用硬脂酸表面改性后裂解炭黑的流动性和分散性提高 ,原料裂解炭黑和超细裂解炭黑改性用硬脂酸最佳质量分数分别为 0 0 1和 0 0 2 ;

The influence of the superfine grinding and surface modification on the properties of the carbon black from pyrolyzed waste tire and its application in NR compound were investigated.The results showed that the optimal rotating speed of FZD single rotor grinding machine was 800 rpm during superfine grinding of pyrolyzed carbon black,at which the superfine pyrolyzed carbon black with the medium particle size of 4.37 μm was obtained;the flowability and dispersity of carbon black improved by the surface modification with stearic acid,and the optimal levels of modifying stearic acid for raw pyrolyzed carbon black and superfine pyrolyzed carbon black were 1% and 2% respectively;and the reinforcing effect of surface-modified superfine pyrolyzed carbon black on NR was similar to that of semi-reinforcing furnace black.