| 膨胀型石墨用量对丁基橡胶/聚丙烯热塑性硫化胶性能的影响 |
| Effect of Expanded Graphite Dosages on Properties of IIR/PP TPV |
| 投稿时间：2024-04-06 修订日期：2024-04-23 |
| DOI：10.12136/j.issn.1000-890X.2026.02.0113 |
| 中文关键词: 膨胀型石墨 丁基橡胶 聚丙烯 热塑性硫化胶 耐热老化性能 阻燃性能 |
| 英文关键词: EG IIR PP TPV heat aging resistance flame retardant property |
| 基金项目:山东省自然科学基金资助项目（ZR 2020 QE 0720） |
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| 中文摘要: |
| 采用动态硫化法制备丁基橡胶（IIR）/聚丙烯（PP）热塑性硫化胶（TPV），研究膨胀型石墨（EG）用量对IIR/PP TPV物理性能、结晶性能、耐热老化性能、微观形貌和阻燃性能的影响。结果表明：随着EG用量的增大，TPV的拉伸强度先增大后减小，当EG用量为20份时，TPV的物理性能较好；EG能够促进PP的结晶，提高TPV的玻璃化转变温度和结晶温度，对熔点影响不大；与未添加EG的TPV相比，添加EG的TPV的老化后拉伸强度保持率较高，阻燃性能较好；当EG用量小于40份时，EG较均匀地分散于TPV中，当EG用量为40份时，EG发生团聚。 |
| 英文摘要: |
| Butyl rubber（IIR）/Polypropylene（PP） thermoplastic vulcanizate（TPV） was prepared by dynamic vulcanization method，and the effect of expanded graphite（EG） dosages on the physical properties，crystallization behavior，heat aging resistance，microstructure and flame retardant properties of IIR/PP TPV was investigated.The results showed that with the increase of EG dosage，the tensile strength of TPV first increased and then decreased.When the EG dosage was 20 phr，the physical properties of TPV were better.EG could promote the crystallization of PP and improve the glass transition temperature and crystallization temperature of TPV，but had little effect on the melting temperature.Compared with the TPV without EG，TPV with EG after aging exhibited higher tensile strength retention and better flame retardant property.When the EG dosage was less than 40 phr，EG was uniformly dispersed in TPV，and when the EG dosage was 40 phr，EG agglomerated.Keywords: expanded graphite, butyl rubber, polypropylene, thermoplastic Vulcanizate, flame retardant property |
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