| 二氧化钛与NR的相互作用研究 |
| Interactions between titanium dioxide and NR |
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| DOI： |
| 中文关键词: 二氧化钛 NR 拉伸强度 交联密度 补强作用 |
| 英文关键词: titanium dioxide tensile strength crosslinking density reinforcement |
| 基金项目:国家自然科学基金资助项目（29674013） |
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| 中文摘要: |
| 研究普通和纳米二氧化钛与NR的相互作用。结果表明，二氧化钛与NR之间无化学作用，且对硫化体系与NR的化学作用产生屏蔽效应。二氧化钛的屏蔽效应、物理作用及补强作用均与其比表面积和吸油值呈正相关，与其粒径和pH值呈负相关。加入偶联剂NDZ-101，可使纳米二氧化钛与NR的相互作用从全部是物理作用变为以化学作用为主（占75.7%）、物理作用为辅（占24.3%），填充NR硫化胶的拉伸强度约提高1倍。 |
| 英文摘要: |
| The interactions between common titanium dioxide or nano-titanium dioxide and NR were investigated.The results showed that the titanium dioxide didn’t react chemically with NR and had a shielding effect on the chemical reaction between curing system and NR；the shielding effect，physical action and reinforcement of titanium dioxide were directly proportional to its specific surface area and oil factor，and inversely proportional to its particle size and pH value；and the chemical action accounted for 75.7% of the whole interaction between nano-titanium dioxide and NR by adding coupling agent NDZ-101 resulting in the increase of tensile strength for NR vulcanizate by 100%. |
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