Use of ZIF-8 as vulcanization additive to optimize natural rubber composites to lower the amount of ZnO

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2024-04-03 DOI:10.1002/vnl.22103

Yujie Yang, Xiaodong Qiao, Xinpeng Fan, Shuangquan Liao, Zhenfan Sun

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引用次数: 0

Abstract

Zinc oxide (ZnO) is widely used as an activator in the vulcanization process of natural rubber. However, due to its poor compatibility with natural rubber, a large amount of ZnO needs to use, and the unreacted ZnO can precipitate in various ways, posing significant harm to aquatic organisms and microorganisms. Therefore, it is necessary to reduce the dosage of ZnO in order to minimize its environmental impact. In this study, we applied ZIF-8, a zinc-based metal–organic framework, as a vulcanization additive in natural rubber. and it was found that ZIF-8 could promote the rubber vulcanization reaction by adsorbing sulfur, promoting sulfur ring-opening, and providing different ligand interactions of Zn²⁺. Moreover, even at low usage levels of ZIF-8, it effectively reduces the amount of ZnO while simultaneously improving the mechanical properties of the samples. This work provides an effective method to reduce the amount of ZnO without sacrificing the rubber properties and provides a new idea for the application of ZIF-8 in rubber materials.

Highlights

ZIF-8 enhances properties of natural rubber composites with low ZnO dosages.
Revealing the reason why ZIF-8 promotes the vulcanization of natural rubber.
Investigation of the effect of ZIF-8 on the vulcanization properties of natural rubber.

Abstract Image

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使用 ZIF-8 作为硫化添加剂优化天然橡胶复合材料，以降低氧化锌的用量

氧化锌（ZnO）被广泛用作天然橡胶硫化过程中的活化剂。然而，由于氧化锌与天然橡胶的相容性较差，需要使用大量的氧化锌，而未反应的氧化锌会以各种方式析出，对水生生物和微生物造成严重危害。因此，有必要减少氧化锌的用量，以尽量减少其对环境的影响。在这项研究中，我们将锌基金属有机框架 ZIF-8 用作天然橡胶的硫化添加剂，结果发现 ZIF-8 可通过吸附硫磺、促进硫磺开环以及提供 Zn2+ 的不同配体相互作用来促进橡胶硫化反应。此外，即使 ZIF-8 的用量较少，也能有效减少氧化锌的用量，同时改善样品的机械性能。这项工作提供了在不牺牲橡胶性能的前提下减少氧化锌用量的有效方法，为 ZIF-8 在橡胶材料中的应用提供了新思路。揭示 ZIF-8 促进天然橡胶硫化的原因。研究 ZIF-8 对天然橡胶硫化性能的影响。

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来源期刊

Journal of Vinyl & Additive Technology 工程技术-材料科学：纺织

CiteScore

5.40

自引率

14.80%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.