| 乳液冻融法制备天然橡胶复合材料及其性能研究 |
| Preparation of NR Composites by Emulsion Freezing-thawing Method and Their Properties |
| 投稿时间：2024-04-26 修订日期：2024-04-26 |
| DOI：10.12136/j.issn.1000-890X.2026.02.0091 |
| 中文关键词: 湿法混炼 乳液冻融法 天然橡胶 裂解炭黑 杂化材料 |
| 英文关键词: NR emulsion freezing-thawing method CBp hybrid material Payne effect wear resistance |
| 基金项目:国家重点基础研究发展计划项目(2018YFC1902604) |
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| 中文摘要: |
| 提出一种湿法混炼新工艺——乳液冻融法，验证该方法制备天然橡胶（NR）复合材料的可行性，并对比研究乳液冻融法与传统干法混炼制备的NR复合材料的性能差异。结果表明：采用乳液冻融法制备NR复合材料[填料分别为裂解炭黑（CBp）、炭黑N660、炭黑N550和CBp/微纤化纤维素杂化材料（CNCH）]可以有效避免填料和胶乳的流失，水资源也可以重复利用；相比于干法混炼制备的NR复合材料，乳液冻融法制备的NR复合材料中填料分散更均匀，形成更完善和更均匀的补强网络，NR复合材料的拉伸性能明显提高，在滚动阻力降低的同时耐磨性能和抗湿滑性能提高；乳液冻融法充分发挥了CNCH的补强效果，使其可以替代炭黑N550对NR进行填充补强。 |
| 英文摘要: |
| A new wet mixing process—emulsion freezing-thawing method was proposed，the feasibility of preparing natural rubber（NR） composites by this method was verified，and the properties differences of NR composites prepared by emulsion freezing-thawing method and traditional dry mixing method were compared.The results showed that the NR composite prepared by the emulsion freezing-thawing method[fillers were pyrolysis carbon black（CBp），carbon black N660，carbon black N550 and CBp/microfibrillated cellulose hybrid material（CNCH） respectively] could effectively avoid the loss of fillers and latex，and water resources could also be reused.Compared with the NR composite prepared by dry mixing method，the filler in the NR composite prepared by emulsion freezing-thawing method was more evenly dispersed，to form a more complete and uniform reinforcement network，and the tensile properties of the NR composite increased significantly，the wear resistance and wet skid resistance were improved while the rolling resistance was reduced.The emulsion freezing-thawing method gived full play to the reinforcement effect of CNCH，which could replace carbon black N550 to fill and strengthen NR. |
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