| 王昌建,李红伟.腰果油改性补强酚醛树脂对天然橡胶/丁苯橡胶胶料性能的影响[J].橡胶科技,2015,13(9):30-33. |
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| 腰果油改性补强酚醛树脂对天然橡胶/丁苯橡胶胶料性能的影响 |
| Influence of CSNL Modified Phenolic Resin on the Properties of NR/SBR Compound |
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| 中文关键词: 酚醛树脂 补强树脂 腰果油改性 相对分子质量 天然橡胶 丁苯橡胶 |
| 英文关键词: phenolic resin reinforcing resin CSNL modification relative molecular weight NR SBR |
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| 中文摘要: |
| 对4种相对分子质量的腰果油改性补强酚醛树脂进行分析，研究其对天然橡胶/丁苯橡胶胶料工艺性能、硫化特性和物理性能的影响。结果表明：4种相对分子质量及其分布差异较大的腰果油改性补强酚醛树脂软化点相近；添加腰果油改性补强酚醛树脂的胶料热老化后硬度和定伸应力增大，拉伸强度变化不大，拉断伸长率减小；添加相对分子质量大及其分布宽的腰果油改性补强酚醛树脂胶料门尼粘度较高，焦烧时间较长，硫化速度较慢，硬度和低定伸应力较大，拉伸强度和拉断伸长率变化不大；添加的腰果油改性补强酚醛树脂相对分子质量及其分布差异越大，胶料的性能差异越明显。 |
| 英文摘要: |
| Four kinds of cashew nut liquid (CSNL) modified phenolic resins with different molecular weight were analyzed，and the influence of the modified phenolic resin on the processing property，curing characteristics and physical properties of NR/SBR compound was investigated.The experimental testing results showed that the molecular weight and molecular weight distribution of those modified phenolic resins were quite different.However，their softening temperatures were close.With the addition of modified phenolic resin，after aging，the hardness and tensile modulus of the NR/SBR vulcanizates increased，the tensile strength changed little，and the elongation at break decreased.It was found that molecular weight and molecular weight distribution of the modified phenolic resin had great influence on its reinforcing effect.When the molecular weight of the modified phenolic resin was larger and the molecular weight distribution was broader，the Mooney viscosity of the compound was higher，scorch time was longer，curing rate was lower，and hardness and tensile modulus at small strain were higher.However，the tensile strength and elongation at break were not significantly affected. |
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