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灌封材料

灌封材料的相关文献在1986年到2022年内共计180篇,主要集中在化学工业、无线电电子学、电信技术、一般工业技术 等领域,其中期刊论文67篇、会议论文12篇、专利文献683085篇;相关期刊51种,包括消费导刊、中南大学学报(自然科学版)、材料科学与工程学报等; 相关会议12种,包括第八届全国强动载效应及防护学术会议暨复杂介质/结构的动态力学行为创新研究群体学术研讨会 、第十二届全国冲击动力学学术会议、第十届全国爆炸力学学术会议等;灌封材料的相关文献由308位作者贡献,包括周凯、张立强、李芝华等。

灌封材料—发文量

期刊论文>

论文:67 占比:0.01%

会议论文>

论文:12 占比:0.00%

专利文献>

论文:683085 占比:99.99%

总计:683164篇

灌封材料—发文趋势图

灌封材料

-研究学者

  • 周凯
  • 张立强
  • 李芝华
  • 杨小玉
  • 谢科予
  • 张福强
  • 张继新
  • 李志鹏
  • 林伟
  • 殷福星
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 刘丹; 刘莉娜; 郑良广; 张燕亮
    • 摘要: 文章以灌封型速度传感器在研发阶段的可靠性极限试验结果为分析源头,通过对完成极限试验的样品进行X-ray及解剖分析,确认极限环境下存在灌封材料热应力不平衡问题,进而导致器件焊点开裂.通过有限元分析、温度变化试验模拟,在快速温变过程中,灌封材料内部的热应力超过焊点强度极限.通过仿真分析,确定提升产品耐快温变环境的方向;通过应力计算,细化产品优化方案.完成样机研制及验证,确认热应力平衡解决方案的可行性,从而提升极限环境下的产品可靠性.
    • 蒋寅
    • 摘要: 以双酚A型环氧树脂、磷系阻燃剂、氢氧化铝和分子筛为主剂,以有机酸酐和促进剂作为固化剂制备一种无卤阻燃薄膜电容灌封材料。研究了不同阻燃剂及添加量对灌封材料玻璃化转变温度、阻燃性能和电容耐久性能的影响,并确定了无卤阻燃薄膜电容灌封材料最佳配方。结果表明:按无卤阻燃薄膜电容灌封材料的最佳配方制备的灌封材料玻璃化转变温度为104°C,阻燃等级为V0,电气绝缘性能佳。以此灌封材料灌注的薄膜电容可以通过1.2倍额定电压、双85(85°C/85%RH)条件下600 h的耐久性试验,试验前后电容变化率为3.93%。
    • 李想; 郭志平
    • 摘要: 永磁同步电动机(PMSM)的散热是电动汽车亟待解决的问题之一.针对PMSM散热问题,将灌封的硅凝胶封装在PMSM的端绕组与外壳之间的间隙中,以此作为PMSM的热管理策略.系统的温升测试表明,在相同的冷却条件下,采用灌封硅凝胶(P-M)的PMSM在任何工作条件下均具有比原始PMSM(O-M)更低的稳定运行温度,最大降温达到27.3°C,比O-M低23.6%.此外,P-M在峰值负载条件下的稳定运行时间延长了约两倍,从84 s改善到165 s.计算流体动力学(CFD)模型显示了电动机的温度分布,该模型与测试结果显示出良好的一致性,并准确预测了在峰值负载条件下的稳定运行时间.
    • 于亚飞; 李忠新; 吴志林
    • 摘要: 针对小口径智能弹药发射时弹载元器件极容易发生损坏失效的问题,对其高过载环境下弹载模块电路应力进行分析.设计弹药弹载电路模块的防护结构,采用HYPERMESH与ABASQUS软件建立弹丸和刚体滑膛身管的有限元模型,得到弹载电路的应力分布,计算不同防护外壳厚度下弹载电路模块的应力响应,并对聚氨基甲酸乙酯、丙烯酸、硅酮和环氧树脂等灌封材料进行有限元数值仿真.该分析可为后续弹丸弹载模块的设计提供参考.
    • 居东华
    • 摘要: 在中国高速公路的发展过程中,裂缝的灌缝处理是路面养护的有力手段,这对道路工人来说非常重要.灌缝不仅可以改善道路性能,还可以延长道路的使用使用寿命.沥青路面开裂和胶结的过程和要求以及接缝材料的质量决定了修复裂缝的效果.精细填充过程将显着提高关节修复后路面的使用寿命.因此,为了获得最佳的填充效果,应根据实际要求和施工条件确定填充过程.在与趋势,目前的疾病路面开裂变得越来越严重研究的知识和材料的理论来修复裂缝有用于修补裂缝问题的解决具有重要的理论意义和实用价值,延长道路的使用寿命并增强实际的使用价值.
    • 刘成臣; 张洪彬; 赵连红; 金涛; 王浩伟
    • 摘要: 目的 研究267有机硅、DC160有机硅、112FR环氧树脂、8836聚氨酯4种灌封材料西沙海洋大气环境与实验室环境试验的相关性.方法 在西沙海域环境开展267有机硅等4种灌封材料的棚下暴露试验,暴晒试验时间为3年.同时在实验室开展湿热试验,分别通过测试表面电阻、体积电阻、介电常数、损耗角正切研究两种试验环境的相关性.结果 将以体积电阻、表面电阻、介电强度、损耗角正切为基准相关性评价结果进行平均,得出灌封材料实验室加速试验和自然暴露试验的秩相关系数为0.66,为强相关.4种灌封材料的加速系数分别是6.6,4.9,4.5,8.3.结论 建立了灌封材料在西沙海洋环境试验和实验室湿热环境试验的相关性,可为后续西沙环境试验的加速处理提供依据.%Objective To study on the correlation between potting materials such as 267 silicone, DC160 silicone, 112FR epoxy resin and 8836 polyurethanein Xisha ocean atmospheric environment and laboratory environmental test. Methods Exposure test under shed was carried for 267 silicone, etc four potting materials in Xisha sea environment for 3 years, while damp heat test was carried out in the laboratory. The relevance of the two test environments was studied through testing surface resistance, volume resistance, dielectric constant, loss tangenty. Results The rank correlation coefficient between the laboratory accelerated test and the natural exposure test was 0.66, which was the average correla-tion between the volume resistance, the surface resistance, the dielectric strength and the loss tangent. They were strongly correlated. The accelerating coefficients of the four potting materials were 6.6, 4.9, 4.5 and 8.3 respectively. Conclusion The correlation between the potting materials and the hot and humid environment tests in the Xisha environment is estab-lished by the rank correlation coefficient method, which can provide basis for accelerated and simplified treatment of subsequent Xisha environmental test.
    • 刘丽红; 胡湘洪
    • 摘要: 目的 研究灌封材料在南海海洋大气中的环境效应.方法 在南海西沙永兴岛开展24个月棚下大气暴露试验,分析其性能劣化规律,评价其环境适应性.开展实验室高温及湿热人工模拟试验,并对比分析自然与人工模拟试验的相互关系.结果 参与试验的16种材料有5种材料环境适应性较好,10种环境适应性一般.高温试验后参与试验的材料主要性能指标与棚下的相关性均为中等强度相关或之下,11种材料的介电常数性能、体积电阻性能劣化加速倍数超过2倍以上.湿热试验后有11种材料主要性能指标与棚下的相关性均为中等强度相关或强相关,10种材料表面电阻性能劣化加速倍数超过3倍以上,14种材料体积电阻性能劣化加速倍数超过3倍以上.结论 在西沙棚下海洋大气环境中,该批试验的灌封材料环境适应性一般.湿热试验与西沙棚下大气暴露试验相关性较好,湿热试验对性能劣化加速性较好.%Objective To study the marine environmental effect of a few encapsulating materials in South China Sea.Methods The exposure test of a few encapsulating materials was carried out under shelter on Yongxing Island of Xisha in South China Sea for 24 months. The environmental effect and the environmental adaptability were analyzed. At the same time, the high temperature test and the humidity-heat test were completed. The correlativity between the environmental test and the artificial simulation test was compared and analyzed.Results There were 5 kinds of materials with better environmental adaptability and 10 kinds of mate-rials with medium environmental adaptability in the tested 16 materials; the correlation between high temperature test and marine atmosphere expose test was medium or lower than medium, and there were 11 kinds of materials, which acceleration factor of die-lectric constant and volume resistance were more than 2 times; there were 11 kinds of materials, which correlation between humidi-ty-heat test and marine atmosphere expose test was medium or higher than medium, and there were 10 kinds of materials, which acceleration factor of surface resistance were more than 3 times, and there were 14 kinds of materials, which acceleration factor of volume resistance were more than 3 times.Conclusion The environmental adaptability of the tested encapsulating materials was medium under shelter on Xisha of South China Sea. The correlation between humidity-heat test and marine atmosphere expose test were preferable, and the humidity-heat test has better performance degradation acceleration effect.
    • 刘成臣; 张洪彬; 赵连红; 金涛; 王浩伟
    • 摘要: ObjectiveTo investigate the aging resistance of commonly used potting materials for airborne electronic equip-ment in Xisha environment. MethodsThe experiment was carried out on four kinds of potting materials by exposing them for 3 years in the Xisha marine environment. Their aging characteristics were studied by testing the surface resistance, the volume re-sistance, the dielectric constant, the loss tangent, etc.ResultsSamples of 267 silicone, DC160 silicone did not show significant changes in the appearance. Their dielectric constant, loss tangent, surface resistance, volume resistance changed slightly. Sam-ples of 112FR epoxy resin and 8836 polyurethane appeared discoloration, pinhole foaming and other phenomena. Their dielec-tric constant, loss tangent, surface resistance and volume resistance changed greatly.ConclusionIn selection of insulating pot-ting material for airborne electronic equipment, 267 silicone, DC160 silicone might be given preference; 112FR epoxy resin and 8836 polyurethane should be selected carefully.%目的 考察机载电子设备常用灌封材料在西沙环境下的耐老化性能.方法 开展西沙海洋环境下4种灌封材料的棚下暴露实验,暴晒实验时间为3年,分别通过测试表面电阻、体积电阻、介电常数、损耗角正切等手段研究其老化特点.结果 267有机硅、DC160有机硅两类样品外观未出现明显变化,且介电常数、损耗角正切、表面电阻、体积电阻均变化较小,112FR环氧树脂、8836聚氨酯两类样品出现变色、产生针孔起泡等现象,介电常数、损耗角正切、表面电阻和体积电阻均变化幅度较大.结论 在机载电子设备选用绝缘灌封材料时,可优先选用267有机硅、DC160有机硅这两类灌封材料,112FR环氧树脂和8836聚氨酯谨慎选用.
    • 胡飞燕; 胡景; 任碧野
    • 摘要: Using different difunctional and trifunctional organoalkoxysilane as monomers,we obtained phenyl vinyl silicone resin with high refractive index by solvent-free dehydration condensation copolymerization,and then prepared potting material by curing the silicone resin through hydrosilylation with silicone oil as crosslinking agent. IR,NMR,TGA,UV,hardness tester,universal testing machine and other methods were used to characterize the silicone resin and the cured potting material. Influences of different factors on the synthesis process were investigated and the optical and mechanical properties of the cured potting material were studied. The results showed that the preparation of solvent-free silicone resin required an appropriate catalyst,suitable amount of water and reaction temperature in order to ensure the transparency of the product. The refractive index of the material increased linearly with phenyl content,and the cured product showed the best mechanical properties when the phenyl content was 30% to 40%.%以不同二官能度和三官能度的有机烷氧基硅烷作为单体,采用无溶剂法脱水缩合共聚得到高折光指数的苯基乙烯基有机硅树脂,通过含氢硅油交联剂硅氢加成固化有机硅树脂得到灌封材料。采用红外光谱、核磁共振、热重分析、紫外光谱、硬度仪、万能拉力机等方法对有机硅树脂和固化灌封材料进行表征,考察了不同因素对合成的影响,提出了封端剂后加入的工艺并对其加入时间进行了探究,最后研究了固化灌封材料的光学和力学性能,结果表明:用无溶剂法制备有机硅树脂,合适的催化剂、加水量、反应温度才能保证产物的透明性;封端剂的加入时间在1~1.5h内所得产物分子量和分子量分布最为适宜;探讨随苯基含量的增加,材料的折光指数呈线性的增加,且苯基质量分数为30%~40%时,所得固化产物力学性能最佳。
    • 陈志强
    • 摘要: 灌封是一种操作工艺,简单来说就是借助灌封材料对各种元器件进行密封和保护.灌封可以减少外界有害的物质,如:尘埃、水分、有害气体等对器件的侵入、损害.同时还可以减缓振动,防止外力损伤,延缓器件的适用寿命.目前,灌封技术已经应用于电子、航空航天、建筑、军工等行业.
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