| 丁腈橡胶耐磨密封制品的关键性能优化 |
| Optimization of Key Properties of Wear Resistant NBR Sealing Product |
| 投稿时间：2021-07-20 修订日期：2021-07-20 |
| DOI：10.12136/j.issn.1000-890X.2022.09.0697 |
| 中文关键词: 丁腈橡胶 耐磨密封制品 优化配方 表面处理 材料复合 交联密度 压缩永久变形 摩擦因数 |
| 英文关键词: NBR wear resistant sealing product optimized formulua surface treatment material composite crosslinking density compression set friction coefficient |
| 基金项目: |
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| 摘要点击次数: 1543 |
| 全文下载次数: 1901 |
| 中文摘要: |
| 从胶料配方、表面处理和材料复合改性3个方面优化丁腈橡胶（NBR）耐磨密封制品的关键性能。结果表明：单
独使用4，4′ -二硫代二吗啉（DTDM）作硫化剂时，NBR胶料的硫化时间较长，压缩永久变形较大，硫黄与硫化剂DTDM并
用作硫化剂时，随着硫黄用量的增大，NBR胶料的硫化速度提高，交联密度增大，压缩永久变形先减小后增大，NBR胶料
的优化配方为NBR 100，氧化锌 5，硬脂酸 1，炭黑N330 60，促进剂TBBS 1. 5，硫化剂DTDM 1. 5，硫黄 0. 5；
NBR胶料表面喷涂抗磨聚氨酯涂料无法在本质上减小其摩擦因数，但在NBR密封制品表面喷涂抗磨聚氨酯涂料可以降
低制品在装配初期磨损的风险；NBR胶料与聚酯帘布或粘胶纤维帘布复合均可以改善其耐磨性能，其中聚酯帘布/NBR
胶料复合材料的摩擦因数更小，较粘胶纤维帘布/NBR胶料复合材料减小44. 04%，较表面未喷涂抗磨聚氨酯涂料的NBR
胶料减小45. 72%。 |
| 英文摘要: |
| The key properties of the wear resistant nitrile butadiene rubber（NBR） sealing product were
optimized from three aspects：compound formulation，surface treatment and material composite modification.
The results showed that，when 4，4′ -dithiodimorphine（DTDM） was used alone as the vulcanizing agent，
the vulcanization time of the NBR compound was long and the compression set was large. When sulfur
and vulcanizing agent DTDM were blended as the vulcanizing agent，with the increase of sulfur content，
the vulcanization speed of the NBR compound increased，the crosslinking density were improved，and
the compression set first decreased and then increased.The optimized formula of the NBR compound was
as follows：NBR 100，zinc oxide 5，stearic acid 1，carbon black N330 60，accelerator TBBS 1.5，
vulcanizing agent DTDM 1.5，sulfur 0.5. On the other hand，spraying the anti-wear polyurethane coating
on the surface of the NBR compound could not substantially reduce its friction coefficient，but spraying the
anti-wear polyurethane coating on the surface of the NBR sealing product could reduce the risk of wear of
the product at the initial stage of assembly.Moreover，the NBR compound composited with polyester cord
or viscose fiber cord could improve its wear resistance. The friction coefficient of the polyester cord/NBR
composite was lower，which was 44.04% lower than that of the viscose fiber/NBR composite，and 45.72%
lower than that of the NBR compound without the anti-wear polyurethane coating. |
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