Preparation of Thermoplastic Polyurethane Composites Based on Reclaimed Polyurethane Foam and Ground Fluoroelastomer: Effect of Pretreatment of Fluoroelastomer through Solid-State Mechanochemical Milling
Preparation of Thermoplastic Polyurethane Composites Based on Reclaimed Polyurethane Foam and Ground Fluoroelastomer: Effect of Pretreatment of Fluoroelastomer through Solid-State Mechanochemical Milling
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再生聚氨酯泡沫与磨碎含氟弹性体制备热塑性聚氨酯复合材料：固相机械化学研磨预处理含氟弹性体的效果
DOI：
10.1177/147776061202800202
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发表时间：
2012-05
影响因子：
2.6
通讯作者：
Liang, Mei
中科院分区：
文献类型：
--
作者：
Li, Hua;Zhang, Xinxing;Lu, Canhui;Liang, Mei
热塑性聚氨酯复合材料是由磨碎的氟橡胶（FKM）和来自制鞋工业的再生聚氨酯（PU）泡沫通过熔融混合制成的。应用本实验室研制的盘磨式机械化学反应器实现FKM的脱硫和超细粉碎，从而提高复合材料的力学性能。荧光显微镜研究表明，脱硫 FKM 在 PU 基体中的分散性比研磨 FKM 好得多。差示扫描量热法和动态力学分析证实，脱硫 FKM 填充 PU 复合材料的玻璃化转变温度高于原始 PU 的玻璃化转变温度。 FKM 的机械化学脱硫显着提高了 FKM/PU 复合材料的机械性能。当FKM含量为20%时，通过脱硫复合材料的拉伸强度由13.2 MPa提高到23.2 MPa，提高了约80.2%；断裂伸长率从380.2%提高到500.2%，提高了约30.2%。此外，添加 100 份脱硫 FKM 粉末后，起始降解温度从 252.8°C 增加至 273.3°C。
Thermoplastic polyurethane composites were made from ground fluoroelastomer (FKM) and reclaimed polyurethane (PU) foam which derived from shoe making industry through melt-mixing. Pan-mill type mechanochemical reactor made in our lab was applied to realise the devulcanisation and ultrafine pulverisation of FKM, thereby to enhance mechanical properties of the composites. Fluorescence microscopy studies indicated that the dispersion of devulcanised FKM in PU matrix was much better than ground FKM. Glass transition temperature of devulcanised FKM filled-PU composites was higher than that of pristine PU, as confirmed by differential scanning calorimetry and dynamic mechanical analysis. The mechanochemical devulcanisation of FKM significantly enhanced the mechanical properties of FKM/PU composites. When the content of FKM was 20%, the tensile strength of the composites was enhanced from 13.2 MPa to 23.2 MPa through devulcanisation, by about 80.2%; and the elongation at break was increased from 380.2% to 500.2%, by about 30.2%. Furthermore, the onset degradation temperature increased from 252.8°C to 273.3°C with the addition of 100 phr devulcanised FKM powder.
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DOI：
10.4271/490080
发表时间：
1949
期刊：
--
影响因子：
--
作者：
J. Collyer
通讯作者：
J. Collyer
影响因子：
3.2
作者：
E. Shivakumar;K. Pandey;S. Alam;C. Das
通讯作者：
E. Shivakumar;K. Pandey;S. Alam;C. Das
DOI：
10.1177/147776060902500402
发表时间：
2009-01-01
影响因子：
2.6
作者：
Egodage, Shantha Maduwage;Harper, John F.;Walpalage, Shantha
通讯作者：
Walpalage, Shantha
影响因子：
3
作者：
M. Lin;Y. Shu;Wen‐Chin Tsen;Fu-Sheng Chuang
通讯作者：
M. Lin;Y. Shu;Wen‐Chin Tsen;Fu-Sheng Chuang
DOI：
10.1515/ci.2005.27.1.38b
发表时间：
2009
期刊：
--
影响因子：
--
作者：
M. Castro;S. Bruzaud;Jianbo Lu;B. Kumar;J. Feller
通讯作者：
M. Castro;S. Bruzaud;Jianbo Lu;B. Kumar;J. Feller