Page 129 - 《橡塑技术与装备》2025年7期

外文精译
FOREIGN LANGUAGE PRECISION TRANSLATION

≈57 L 切线。与 4.7 L 啮合型式密炼机相比，采用 1.6 纹前驱体，然后提高原材料的质量和混炼，以消除这
L 切线密炼机进行混炼时，混炼强度分布的改善效果 些耐久性限制缺陷。
与 Dispersigrader 光学显微镜测得的炭黑分散度以及 最后需要强调的是，如果一组重复试品的抗拉强
X 射线计算机断层扫描（X-CT）分析的氧化锌分散 度值较低，则应重视该数据点，而不是放弃该数据点。
结果相一致。 与其他重复试品相比，某个试品的拉伸强度明显偏低，
作为最后的评论，应该强调的是，一组复制试品 这意味着在该试品的材料中发现了明显较大的裂纹前
的低抗拉强度值是一个值得重视的数据点，而不是丢 驱体，使用含有少量玻璃珠（d=0.5 mm）的 SBR 胶
弃的数据点。与其他重复试品相比，试品的抗拉强度 料作为模型缺陷，就证明了这一点。生产可靠橡胶产
明显较低，这意味着在该试品的材料中发现了明显较 品的一个关键部分是能够通过使用本文讨论的拉伸强
大的裂纹前驱体，这可以通过使用含有低水平玻璃珠 度分布方法等检测出橡胶中的大裂纹前驱体，然后改
的 SBR 胶料来证明，其中 d=0.5 mm 被引入作为模型 进原材料和混炼质量，消除这些限制耐久性的缺陷。
缺陷。生产可靠橡胶产品的一个关键部分是能够通过
使用本文回顾的抗拉强度分布方法检测橡胶中的大裂

Using tensile strength distribution to detect undispersed filler
and other crack precursors in rubber

Zhang Yu, Compiler
(National Machinery Information Center of Rubber &Plastics, Beijing 100143, China)

Abstract: In this paper, a kind of method is proposed to detect undispersed fillers and other crack
precursors in rubber by using the statistical characteristics of tensile strength distribution. Research has
shown that the tensile strength distribution of rubber is significantly affected by the size and distribution of
internal defects (such as filler aggregates and impurities), with larger defect sizes resulting in lower strength.
By increasing the number of repeated tests on the tensile specimen (such as 10 or more), the presence of
low concentration large defects can be more sensitively captured, thereby improving the resolution of the
distribution. Taking SBR and NBR rubber compound filled with carbon black and zinc oxide as examples, the
experiment proves that this method can effectively quantify the dispersion effect of fillers, distinguish the
mixing quality of different internal mixers (size, rotor type), and is consistent with the dispersion analysis results
of optical microscope (dispercader) and X-ray computer tomography (μCT). The study emphasizes that low
strength values are crucial data points for diagnosing defects, improving raw material quality, and optimizing
mixing processes to ensure product durability.
Key words: tensile strength distribution; crack precursor; undispersed fillers; dispersion of fillers; rubber
durability
（R-03）

2025 第 51 卷 ·81·
年