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| 1 | Preparation and Properties of Ultrathin Flexible Expanded Graphite Film via Adding Natural Rubber显示文摘Expanded graphite(EG) films exhibit potential use in a wide field including thermal management, conductive applications,and electromagnetic interference(EMI) shielding. However, their poor tensile strength and brittleness are crucial deficiencies for commercial applications. To address these defects, in our work, natural rubber(NR) is employed to improve EG films for better mechanical strength and flexibility. The origin of the strengthening effect of EG films by the addition of natural rubber mainly arises from the formation of a simulate shell structure. Compared to the neat EG films, the addition of merely 2 wt% NR can give rise to superior ductility. Further, the loading of 10 wt% NR realizes a significant mechanical enhancement of the EG/NR films, i.e., 2.4 and 11.4 times increase in tensile strength and elongation at break, respectively. Besides, EG/NR films containing 10 wt% NR can still sustain excellent thermal and electric conductivities of 173 W·m^-1·K^-1 and 75 S·cm^-1, respectively. Furthermore, a very high EMI of 41.4 dB is achieved as the film thickness reaches 50 μm. Thus, the lightweight EG/NR films with comprehensive performance as well as their virtue of green and simple large-scale preparation endow them with the possibility of designing next-generation flexible electronics. | Yan-Ling Mo Yu-Xin Tian Yu-Hang Liu Feng Chen Qiang Fu | 2019 | Chinese Journal of Polymer Science2019，37，8： | 2 |
| 2 | 改性玄武岩纤维/聚氨酯阻尼材料的制备及性能显示文摘使用γ-氨丙基三乙氧基硅烷(KH550)对玄武岩纤维(BF)进行表面处理制备了改性玄武岩纤维(MBF),以环氧化端羟基聚丁二烯(EHTPB)、二苯甲烷二异氰酸酯、1,4-丁二醇为原料合成了主链含有环氧基团的EHTPB基聚氨酯(EPU),通过环氧开环反应连接MBF与EPU制备了阻尼材料MBF@EPU。采用SEM、FTIR和XPS对BF和MBF表面形貌、结构进行了表征,采用动态热机械分析仪和电子万能拉伸试验机对MBF@EPU进行了测试。结果表明,KH550的改性使MBF表面含有大量的C元素,粗糙程度显著增加,MBF与EPU主链通过化学键进行了连接。MBF的引入能提高EPU的阻尼与力学性能。由MBF用量为EHTPB质量20%制得的聚氨酯阻尼材料具有最佳的综合性能,其有效阻尼温域达到140.0℃,拉伸强度为8.68MPa,断裂伸长率为329.04%,比EPU分别提高了7.7%和24.9%。 | 景芳达 韩松 葛晶 秦野 王娜 管勇 | 2022 | 精细化工2022，39，7： | 1 |
| 3 | Tunable Multiple Morphological Transformation of Supramolecular Hyperbranched Polymers Based on an A_(2)B_(6)-type POSS Monomer显示文摘The growing dema nds of supramolecular hyperbranched polymers integrati ng non covale nt in teraction and unique topological structure merits had received considerable interest in the fabrication of novel materials for advaneed applications.Herein,we prepared A2B6-type POSS-containing supramolecular hyperbranched polymers with multiple morphologies including lamellar-like,branched,hollow,core-shell and porous spherical structures through regulating self-assembling monomer concentrations and solvent polarities.The incorporation of appropriate emulative guest molecules would further trigger morphological transformations(such as vesicles and spherical micelles)by synergistic effects of unique POSS aggregation ability,supramolecular complexations and hydrophilic-hydrophobic interactions.Thus,this facile and universal strategy may enable a modular nanofabrication of supramolecular hyperbranched polymers with diversiform topological structure and sophisticated multifunctionality for their potential applications. | Lin-Feng Fan Cui-Ling Hou Xing Wang Li-Tang Yan De-Cheng Wu | 2021 | Chinese Journal of Polymer Science2021，39，12： | 0 |
| 4 | PTMG含量对HMDI型PUE微观结构的影响显示文摘通过预聚体法,以聚四氢呋喃醚二醇(PTMG-1000)、4,4′-二环己基甲烷二异氰酸酯(HMDI)、3,3′-二氯-4,4′-二氨基二苯基甲烷(MOCA)、二甲硫基甲苯二胺(DMTDA)为主要原材料,合成不同PTMG质量含量的聚氨酯弹性体(PUE)。采用红外光谱仪(FT-IR)、X射线衍射仪(XRD)、差示量热仪(DSC)和力学性能测试等手段研究了PTMG质量含量对PUE的羰基氢键化程度、结晶度、玻璃化转变温度(T)、耐低温性、模量等的影响。结果表明:PUE中大部分—NH参与构成氢键,并且PUE-43的氨基氢键化指数最高,PTMG质量含量最高的PUE-70中羰基氢键化指数、微相分离程度、耐低温性、结晶性均最佳,T最低。在PUE-49时力学性能最好。 | 张家平 曹兰 白晓军 宗成中 | 2022 | 化工新型材料2022，50，10： | 0 |
| 5 | 利用玻璃化温度梯度制备天然橡胶类高阻尼弹性体材料显示文摘利用天然橡胶(NR)与环氧化天然橡胶(ENR)良好的相容性,以及不同环氧化程度的ENR的玻璃化温度(T_(g))梯度差异,选用NR和3种不同环氧化程度的ENR(ENR-25,环氧化程度为25%;ERN-40,环氧化程度为40%;ENR-50,环氧化程度为50%)制得NR/ENR-25/ENR-40/ENR-50四元并用阻尼材料,研究由于NR和各ENR的T_(g)和用量差异产生的阻尼加和效应对并用胶在室温及以上温度的阻尼温域的拓宽情况。结果表明,当NR/ENR-25/ENR-40/ENR-50并用比为55/5/15/25,同时添加40份炭黑N330时,四元并用胶具有较好的综合性能,其有效阻尼温域(损耗因子大于0.3)为66℃(-15.3~50.7℃),拉伸强度可达17.2 MPa,拉断伸长率为571%。 | 黄瑞丽 郭丙力 卢珣 方红 | 2023 | 橡胶工业2023，70，2： | 0 |
| 6 | HTPB含量对TPU微观结构的影响显示文摘以端羟基聚丁二烯(HTPB),4,4′-二苯甲烷二异氰酸酯(MDI)和1,4-丁二醇(BDO)为原料,通过本体法制备不同HTPB质量含量的热塑性聚氨酯弹性体(TPU)。采用傅里叶变换红外光谱(FTIR)、X射线衍射(XRD)及差式扫描量热法(DSC)对微观结构进行探究,并使用力学性能测试、耐异丙醇(IPA)溶解度测试研究HTPB对宏观性能影响。结果表明,TPU预聚体样品中绝大多数的—NH参与形成了氢键,HTPB的加入使微相分离程度先增大后减小,微相分离程度在TPU-79时最大,结晶最好。HTPB的增加对机械性能呈现一定的增强作用,对耐IPA能力呈现减弱作用,TPU-65的综合性能最优。 | 张家平 崔勇胤 潘宏伟 宗成中 | 2021 | 弹性体2021，31，6： | 0 |
| 7 | 氧化锆改性聚氨酯基复合材料的制备与性能显示文摘通过熔融共混法和超分散技术制备了氧化锆改性聚氨酯基复合材料,研究了氧化锆的加入对复合材料的微相结构、摩擦性能及阻尼性能的影响。结果表明,氧化锆粒子的加入可以使复合材料微相分离程度增加,从而使材料阻尼温域显著增加,材料的摩擦去除率也随之提升。当氧化锆质量分数达到3.0%时,材料的阻尼温域达到69℃,与纯聚合物基体相比去除率提升了19.5%,且抛光稳定性良好。 | 马驰 赵晓文 张晓玉 翟凤洋 刘紫婷 姜岩 王英丹 | 2021 | 塑料工业2021，49，12： | 0 |
| 8 | 聚氨酯基水下阻尼吸声材料的研究进展显示文摘概述了水下吸声材料用聚氨酯高阻尼基体的制备方法和聚氨酯基复合吸声材料的研究进展,总结了现有传统水下阻尼吸声材料的特点,展望了未来吸声材料的发展方向。 | 孙昭宜 李瑜 梅志远 王清鑫 | 2021 | 聚氨酯工业2021，36，6： | 0 |
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