| 四亚乙基五胺对PVC和PVC/NBR共混物的交联作用 |
| Effect of TEPA on Cross-linking of PVC and PVC/NBR Blend |
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| DOI： |
| 中文关键词: PVC NBR 共混物 四亚乙基五胺 凝胶质量分数 热变形性能 硫化特性 |
| 英文关键词: PVC NBR blend TEPA gel content heat deformation curing characteristics |
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| 中文摘要: |
| 从硫化特性、热变形值、凝胶质量分数和物理性能等方面考察了四亚乙基五胺(TEPA)对PVC和PVC/NBR共混物的交联作用以及PVC和NBR同时交联对共混物性能的影响。结果表明，PVC/NBR共混物中的PVC组分交联后，共混物的物理性能和热变形性能都有所改善；PVC和NBR两组分同时交联可改善共混物的物理性能和热变形性能，在NBR用量较大(60份以上)时效果更为明显，若NBR用量太低，则共混物热变形性能反而有所下降；交联剂TEPA对硫黄硫化NBR有一定抑制作用，对共混物的物理性能影响不大，但在一定用量范围内有较小的劣化作用。 |
| 英文摘要: |
| The effect of tetraethylene pentamine(TEPA)on cross-linking of PVC and PVC/NBR blend was studied in terms of curing characteristics，heat deformation，gel content and physical properties.The results showed that the physical properties and heat deformation of PVC/NBR blend improved when the PVC portion was crosslinked，especially the PVC portion and NBR portion were simutaneously crosslinked；the effect was more significant when the NBR portion was greater(more than 60 parts)，and the heat deformation of the blend increased if the NBR portion was too small；TEPA had a certain inhibitory effect on the sulfur vulcanization of NBR and little effect on the physical properties of the blend. |
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