| 天然橡胶剪切模量影响因素研究 |
| Study on Influencing Factors of Shear Modulus of NR |
| 投稿时间：2019-07-17 修订日期：2019-07-17 |
| DOI：10.12136/j.issn.1000-890X.2020.09.0660 |
| 中文关键词: 天然橡胶 剪切模量 炭黑 硫黄 硫化条件 凝胶质量分数 交联密度 |
| 英文关键词: NR shear modulus carbon black sulfur curing condition gel mass fraction crosslink density |
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| 中文摘要: |
| 研究炭黑用量和粒径、硫黄用量、硫化时间和硫化压力对天然橡胶（NR）剪切模量的影响。结果表明：随着炭黑用量的增大，NR的剪切模量逐渐增大；在相同硬度的情况下，炭黑粒径越大，其补强NR中的炭黑凝胶质量分数越大，剪切模量也越大；NR的剪切模量随着交联密度的增大而增大；硫化时间为60～90 min时，NR的剪切模量存在最大值；随着硫化压力的增大，NR的剪切模量增大。 |
| 英文摘要: |
| In this paper，the effects of carbon black dosage and particle size，sulfur dosage，curing time and curing pressure on the shear modulus of natural rubber（NR） were studied.The results showed that as the dosage of carbon black increased，the shear modulus of NR gradually increased.In the case of the same hardness，the NR reinforced by carbon black with larger particle size had larger carbon black gel mass and shear modulus.The shear modulus of NR increased as the crosslink density increasing.When the curing time was 60～90 min，the shear modulus of NR had a maximum value.As the curing pressure increasing，the shear modulus of NR increased. |
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