以异佛尔酮二异氰酸酯(IPDI)、2,2-二羟甲基丙酸(DMPA)、盐酸多巴胺(DOP)为单体,通过两步聚氨酯反应制备了三元聚合物(IDD)。以商用聚偏氟乙烯(PVDF)粘接剂为对照组,表征并分析了IDD和PVDF以1:1质量比共混制备的IP粘接剂用于锂离子电池...以异佛尔酮二异氰酸酯(IPDI)、2,2-二羟甲基丙酸(DMPA)、盐酸多巴胺(DOP)为单体,通过两步聚氨酯反应制备了三元聚合物(IDD)。以商用聚偏氟乙烯(PVDF)粘接剂为对照组,表征并分析了IDD和PVDF以1:1质量比共混制备的IP粘接剂用于锂离子电池硅碳复合阳极的性能。结果表明:IP阳极在0.3 C下进行20次充放电,其放电比容量较PVDF阳极容量高50 m Ah·g^(-1),且其在高电流密度下表现出较好的可逆容量。展开更多
A series of nano silica/silicone modified waterborne polyurethane(WPU) have been synthesized from polytetramethylene glycol and isophorone diisocyanate, dihydroxymethyl propionic acid and triethylamine, ethylenediamin...A series of nano silica/silicone modified waterborne polyurethane(WPU) have been synthesized from polytetramethylene glycol and isophorone diisocyanate, dihydroxymethyl propionic acid and triethylamine, ethylenediamine, trimethylolpropane, nano-SiO2 and the silane coupling agent KH550. The effect of the dosage of nano-SiO2 on the WPU-Si membrane and the coated RDX(cyclotrimethylenetrinitramine) particles have been studied in terms of their surface properties, mechanical properties, and thermal stability. The results showed that with the increase of Si content, the stability of the emulsion reduced gradually. The material with more Si content displayed an increased thermodynamic stability, an increased high temperature resistance, an increased tensile strength and a decreased elongation at break. With the increase of Si content, the surface tension of the material decreased, the bibulous rate reduced, and the contact angle increased gradually, so that the surface tension of the polyurethane and RDX are close to each other which could improve the performance of coating.展开更多
基金The project was supported by the National Defense Foundation of China(973)(613142)National Natural Science Foundation of China(20673073)Foundation of Shenzhen Key Laboratory of Functional Polymer,China(FP20130007)~~
文摘以异佛尔酮二异氰酸酯(IPDI)、2,2-二羟甲基丙酸(DMPA)、盐酸多巴胺(DOP)为单体,通过两步聚氨酯反应制备了三元聚合物(IDD)。以商用聚偏氟乙烯(PVDF)粘接剂为对照组,表征并分析了IDD和PVDF以1:1质量比共混制备的IP粘接剂用于锂离子电池硅碳复合阳极的性能。结果表明:IP阳极在0.3 C下进行20次充放电,其放电比容量较PVDF阳极容量高50 m Ah·g^(-1),且其在高电流密度下表现出较好的可逆容量。
基金the financial support by the National Natural Science Foundation of China(No.20973022 and No.11472048)
文摘A series of nano silica/silicone modified waterborne polyurethane(WPU) have been synthesized from polytetramethylene glycol and isophorone diisocyanate, dihydroxymethyl propionic acid and triethylamine, ethylenediamine, trimethylolpropane, nano-SiO2 and the silane coupling agent KH550. The effect of the dosage of nano-SiO2 on the WPU-Si membrane and the coated RDX(cyclotrimethylenetrinitramine) particles have been studied in terms of their surface properties, mechanical properties, and thermal stability. The results showed that with the increase of Si content, the stability of the emulsion reduced gradually. The material with more Si content displayed an increased thermodynamic stability, an increased high temperature resistance, an increased tensile strength and a decreased elongation at break. With the increase of Si content, the surface tension of the material decreased, the bibulous rate reduced, and the contact angle increased gradually, so that the surface tension of the polyurethane and RDX are close to each other which could improve the performance of coating.
