不同饱和度的氢化丁腈橡胶对塑化聚氯乙烯性能的影响

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2024-07-04 DOI:10.1002/vnl.22136

Chundie Zhang, Tingting Chen, Ling Zhang, Jun Zhang

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引用次数: 0

摘要

塑化聚氯乙烯（PVC）易燃烧，燃烧时产生大量烟雾。为了改善塑化聚氯乙烯的综合性能，将不同饱和度（88%、94% 和 99%）的氢化丁腈橡胶（HNBR）与塑化聚氯乙烯进行熔融共混。与不含氢化丁腈橡胶的增塑聚氯乙烯相比，当氢化丁腈橡胶以每百份树脂 30 份的比例添加到增塑聚氯乙烯中时，玻璃化转变温度从-10.6°C 降至-26.0°C，热降解起始温度从 272°C 升至 281°C，断裂伸长率从 316% 增至 477%，永久变形从 72% 降至 61%。然而，这导致塑化聚氯乙烯的拉伸强度减弱。此外，在锥形量热仪测试中，PVC/HNBR 混合物的总产烟量（从 18 m2 到 22 m2）低于 PVC 对照组（23 m2），点火时间从 26 秒增加到 32 秒。所有 PVC/HNBR 样品都具有出色的耐低温性能。添加 HNBR 可降低塑化 PVC 的燃烧烟密度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Effect of various saturation levels of hydrogenated nitrile-butadiene rubber on plasticized polyvinyl chloride performance

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Effect of various saturation levels of hydrogenated nitrile-butadiene rubber on plasticized polyvinyl chloride performance

Plasticized polyvinyl chloride (PVC) burns easily and generates a lot of smoke during combustion. In order to improve the comprehensive performance of plasticized PVC, hydrogenated nitrile-butadiene rubber (HNBR) with different degrees of saturation (88%, 94% and 99%) were melt blended with plasticized PVC. Compared to the plasticized PVC without HNBR, the glass transition temperature decreased from −10.6 to −26.0°C, the initiation temperature for thermal degradation increased from 272 to 281°C, the elongation at break enlarged from 316% to 477%, and the permanent set dropped from 72% to 61% when HNBR was added to plasticized PVC at a ratio of 30 parts per hundred parts of resin. However, this resulted in a weakening of tensile strength of the plasticized PVC. Additionally, in the cone calorimetry test, the total smoke production of the PVC/HNBR blends (from 18 to 22 m²) was lower than that of the PVC control (23 m²) and the time to ignition was increased from 26 to 32 s. As a result, PVC/HNBR is expected to gain popularity in the rubber and plastic pipe, wire, and cable sheathing industries.

Highlights

Plasticized PVC improves thermal stability by melt blending with HNBR.
All PVC/HNBR samples have excellent low-temperature resistance.
The addition of HNBR decreases the burning smoke density of plasticized PVC.

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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.