[1]张雪键,黄冬梅?鄢,陈 晨,等.不同天然胶乳含量乳胶海绵的热氧老化行为[J].合成橡胶工业,2023,1:55-58.
ZHANG Xue-jian,HUANG Dong-mei,CHEN Chen,et al.Thermal-oxidative aging behavior of latex sponge with different natural rubber latex content[J].China synthetic rubber industy,2023,1:55-58.
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不同天然胶乳含量乳胶海绵的热氧老化行为(PDF)
ZHANG Xue-jian,HUANG Dong-mei,CHEN Chen,et al.Thermal-oxidative aging behavior of latex sponge with different natural rubber latex content[J].China synthetic rubber industy,2023,1:55-58.
《合成橡胶工业》[ISSN:1000-1255/CN:62-1036/TQ]
- 期数:
- 2023年1期
- 页码:
- 55-58
- 栏目:
- 出版日期:
- 2023-01-15
文章信息/Info
- Title:
- Thermal-oxidative aging behavior of latex sponge with different natural rubber latex content
- 文章编号:
- 1000-1255（2023）01-0055-04
- Author(s):
- ZHANG Xue-jian1; HUANG Dong-mei1; CHEN Chen2; HE Sen2; KONG Zhe2; LEI Wan-lian1
- 1. College of Quality and Safety Engineering, China Jiliang University, Hangzhou 310018, China; 2. Zhejiang Light Industrial Products Inspection and Research Institute, Hangzhou 310018, China
- Keywords:
- latex sponge; thermal-oxidative aging; natural rubber latex; yellowness index; whiteness index; crosslinking density; indentation hardness
- 分类号:
- TQ 337+.3
- DOI:
- DOI:10.19908/j.cnki.ISSN1000-1255.2023.01.0055
- 文献标识码:
- B
- 摘要:
- 采用加速热空气老化的方法将2种不同天然胶乳含量的乳胶海绵（80 NR和0 NR）置于100 ℃条件下，通过黄度指数、白度指数、交联密度和压陷硬度等性能指标考察了其热氧老化行为，探讨了材料的热空气老化规律。结果表明，在老化过程中乳胶海绵80 NR的黄度指数始终大于0 NR，而白度指数始终小于后者。80 NR的交联密度始终要大于0 NR，所以该乳胶海绵更容易发生分子链的断裂和交联反应。80 NR的压陷硬度受老化时间的影响较明显，且会出现在较短时间内压陷硬度急剧增大的现象；0 NR的压陷硬度与老化时间呈线性相关且增幅较小。乳胶海绵0 NR的耐老化性能要优于80 NR。
- Abstract:
- Two kinds of latex sponge (80 NR and 0 NR) with different natural latex contents were exposed to 100 ℃ by accelerated hot air aging method. Their thermal-oxidative aging behavior was investigated by using yellowness index, whiteness index, crosslinking density and indentation hardness, and the hot air aging rule of the materials was discussed. The results showed that the yellowness index of 80 NR was always higher than that of 0 NR, while the whiteness index was always lower than the latter. The crosslinking density of 80 NR was always bigger than that of 0 NR, so the latex sponge of 80 NR was more prone to molecular chain breakage and crosslinking reaction. The indentation hardness of 80 NR was affected obviously by aging time, and would increase sharply in a short time. The indentation hardness of 0 NR was linearly correlated with aging time and had a small increase. The aging resistance of 0 NR was better than that of 80 NR.
参考文献/References
［1］ 王超逸， 王宇， 许之浩， 等. 加速老化条件下乳胶海绵的热老化规律［J］. 合成橡胶工业， 2020， 43（1）： 71-75.［2］ 刘通， 李普旺， 李思东， 等. 天然乳胶制品性能的影响因素研究进展［J］. 材料导报： 纳米与新材料专辑， 2016， 30（2）： 353-356.［3］ Yarahmadi N， Alberto V， Ignacy J. Accelerated ageing and degradation characteristics of rigid polyurethane foam［J］. Polymer Degradation and Stability， 2017， 138： 192-200.［4］ Huang Dongmei， Zhang Mingzhen， Shi Long， et al. Fire behaviors of single and laminated natural latex foam［J］. International Journal of Thermal Sciences， 2019， 136（2）： 278-286.［5］ 张明振， 黄冬梅， 原琪， 等. 不同点火位置时乳胶泡沫火蔓延特性［J］. 过程工程学报， 2018， 18（5）： 1029-1036.［6］ 蔡万泼， 王德海， 盛伟明. 紫外光固化材料热老化黄变的研究［J］. 影像科学与光化学， 2012， 30（5）：390-397.［7］ 刘高君， 孙爱玲， 葛国杰， 等. 热空气老化对丁基橡胶交联密度和力学性能的影响［J］.特种橡胶制品， 2013， 34（3）： 14-17.［8］ Deroiné M， Le Duigou A， Corre Y M， et al. Accelerated ageing and lifetime prediction of poly（3-hydroxybutyrate-co-3-hydroxyvalerate） in distilled water［J］. Polymer Testing， 2014， 39（1）： 70-78.
备注/Memo
- 备注/Memo:
- 国家自然科学基金面上项目（51976205）；浙江省市场监督管理局雏鹰计划培育项目（CY 2023110）
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