Revealing the unique characteristics and strength of polycarbodiimide as an accelerator-free crosslinker for low-temperature processing of carboxylated nitrile butadiene rubber gloves for hand protection

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2024-08-23 DOI:10.1002/vnl.22151

Nadia Wan Azman, Masahiro Fujiwara, Norihide Enomoto, Azura A. Rashid

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引用次数: 0

Abstract

Carboxylated nitrile rubber (XNBR) gloves with sulfur crosslinked system consist of accelerators that pose a Type IV allergies problem with a risk to harm the health of the user. Alternative crosslinking system such as accelerator-free (AF) crosslinker has been found and established to combat the health issues as replacement to the conventional crosslinker. This work emphasized the use of polycarbodiimide (PCDI) as a crosslinker, particularly PCDI with zinc oxide (ZnO) crosslink system. The effectiveness of PCDI as an AF crosslinker was compared with two conventional crosslink systems: sulfur with ZnO and ZnO only system. The swelling test results show the crosslink density of PCDI crosslink system achieved comparable value with conventional systems. It is expected that XNBR gloves with PCDI imposed superior mechanical and physical properties as sulfur system due to the formation of ionic crosslink resulting in much denser polymer network. The new PCDI crosslinker system offer cost reduction to gloves manufacturer as it can be cured at low temperatures from 60 to 80°C comparing to sulfur crosslinked system that normally cured at 140°C. PCDI offered a new generation of AF crosslinker in XNBR gloves with lower curing temperatures and to tackle health hazards, in place of the conventional crosslinker.

Highlights

Emphasizes a significant change or improvement in the field of hand protection.
Suggests that polycarbodiimide possesses distinctive qualities that set it apart from other materials.
Highlights polycarbodiimide's effectiveness as a crosslinker without the need for accelerators, which are commonly used in rubber processing
Indicates a novel approach to processing rubber gloves, potentially reducing energy consumption or enabling new applications.
Specifies the type of gloves being discussed, indicating a focus on a specific material or product.

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揭示聚碳二亚胺作为无促进剂交联剂在低温加工羧基丁腈橡胶护手手套中的独特特性和强度

硫交联系统的羧基丁腈橡胶（XNBR）手套由促进剂组成，会造成 IV 型过敏问题，并有损害使用者健康的风险。为了解决这些健康问题，人们发现并确立了无促进剂（AF）交联剂等替代交联体系，以取代传统交联剂。这项工作强调使用聚碳二亚胺（PCDI）作为交联剂，特别是使用氧化锌（ZnO）交联体系的 PCDI。比较了 PCDI 作为 AF 交联剂与两种传统交联体系（硫与氧化锌交联体系和仅氧化锌交联体系）的有效性。溶胀测试结果表明，PCDI 交联体系的交联密度与传统体系相当。由于离子交联的形成使聚合物网络更加致密，因此使用 PCDI 的 XNBR 手套的机械和物理性能有望优于硫磺体系。与通常在 140°C 下固化的硫磺交联体系相比，新型 PCDI 交联剂体系可在 60 至 80°C 的低温下固化，从而降低了手套制造商的成本。PCDI 为 XNBR 手套提供了新一代 AF 交联剂，其固化温度更低，可取代传统交联剂，解决健康危害问题。表明聚碳二亚胺具有有别于其他材料的独特品质。强调聚碳二酰亚胺作为交联剂的功效，无需使用橡胶加工中常用的促进剂指出加工橡胶手套的新方法，可降低能耗或实现新的应用。指明所讨论的手套类型，表明关注特定材料或产品。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.