| 碱性蛋白酶凝固天然胶乳对天然橡胶结构和性能的影响 |
| Effect of Alkaline Protease Coagulation of Natural Latex on Structures and Properties of NR |
| 投稿时间：2023-11-24 修订日期：2023-11-24 |
| DOI：10.12136/j.issn.1000-890X.2025.08.0572 |
| 中文关键词: 天然橡胶 天然胶乳 碱性蛋白酶凝固 非胶组分 硫化特性 物理性能 |
| 英文关键词: NR natural latex alkaline protease coagulation non-rubber component vulcanization characteristic physical property |
| 基金项目:国家重点研发计划项目课题 高性能专用胶工程化加工关键技术”(2022YFD2301203) |
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| 中文摘要: |
| 研究碱性蛋白酶凝固天然胶乳对天然橡胶（NR）非胶组分含量和NR胶料硫化特性、物理性能和加工性能的影响。结果表明：随着碱性蛋白酶用量的增大，天然胶乳中的部分蛋白质和磷脂发生水解，导致NR的氮含量降低，丙酮抽出物含量增大；与酸凝固NR纯胶相比，碱性蛋白酶凝固NR纯胶的硫化速率明显加快，交联密度、300%定伸应力、拉伸强度和撕裂强度明显增大；与酸凝固NR/炭黑N330复合材料相比，碱性蛋白酶凝固NR/炭黑N330复合材料的压缩生热降低，耐磨性明显提高，但Payne效应增大。 |
| 英文摘要: |
| The effect of alkaline protease coagulation of natural latex on the non-rubber component contents of natural rubber（NR） and the vulcanization characteristics，physical properties and processing properties of NR compound was studied.The results showed that with the increase of alkaline protease dosage，some proteins and phospholipids in natural latex were hydrolyzed，leading in a decrease in the nitrogen content of NR and an increase in the acetone extract content.Compared with acid coagulation NR pure compound，alkaline protease coagulation NR pure compound had an significantly faster vulcanization rate and larger crosslinking density，tensile stress at 300% elongation，tensile strength and tear strength.Compared with acid coagulation NR/carbon black N330 composite，alkaline protease coagulation NR/carbon black N330 composite had lower compression heat build-up and significantly better wear resistance，but larger Payne effect. |
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