螺母成型模具，高抗冲击性锻模。
对马来酸酐接枝炭黑进行了结构表征和应用，结果表明：接枝炭黑使PVC分散性更好，并可显著提高抗冲击强度和拉伸强度。
The results showed that the grafted carbon black had better dispersion in PVC, the impact strength and tensile strength increased obviously.
对马来酸酐接枝炭黑进行了结构表征和应用，结果表明：接枝炭黑使PVC分散性更好，并可显著提高抗冲击强度和拉伸强度。
The results showed that the grafted carbon black had better dispersion in PVC, the impact strength and tensile strength increased obviously.
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