在废旧橡胶的微波裂解腔体上设置4个波源和相应波导管,使用HFSS软件建立微波裂解模型,对裂解腔体上波导管馈口的分布方式和间距进行电场分布和微波能损耗分析.结果发现,微波
天然胶乳综合性能优异,应用模具拼装、凝固剂与硫化胶乳多次交替浸渍和干燥工艺,制作各种规格和结构复杂的气囊医用导管.介绍天然胶乳气囊导尿管、气囊前列腺医用导管、气囊
建立气相色谱-质谱联用快速测定玩具及儿童用品中苯并[c]芴、苯并[b]萘并[2,1-d]噻吩、5-甲基䓛和二苯并[cd,jk]芘4种多环芳烃的方法。结果表明,采用甲苯为萃取溶剂,超声波萃取50 min,采用DB-EUPAH毛细管色谱柱,选择离子监测模式下定量分析,可实现4种多环芳烃的有效分离。该方法的4种多环芳烃质量浓度测定线性范围为0.01~1 mg·L-1,线性相关因数不小于0.9992,加标回收率为86.5%~108.7%,相对标准偏差小于3%,可用于玩具及儿童用品中4种多环芳
介绍一带一路项目乌兹别克斯坦安格连橡胶厂建设的公用工程系统设计优化.为进一步控制成本、便于实施、使设备操作和维护更加便利,提出锅炉房除氧器溢流管增加水封、锅炉房凝
研究白炭黑、石蜡油、吸水树脂和吸水助剂ZA用量对三元乙丙橡胶吸水膨胀橡胶性能的影响.结果表明:在使用石蜡油改善胶料加工性能时,需要加入20份以上的白炭黑,否则硫化胶难以
In this work, three-dimensional (3D) Cf/SiBCN composites were fabricated by polymer infiltration and pyrolysis (PIP) with poly(methylvinyl)borosilazane as SiBCN
氟橡胶具有优异的耐化学腐蚀和耐高温性能,在航空航天、机械、石油、汽车和军工等领域广泛应用,减小氟橡胶摩擦因数和磨耗量不但能够延长其密封制品使用寿命,还能够提高生产
Three-dimensional (3D) printing technology is becoming a promising method for fabricating highly complex ceramics owing to the arbitrary design and the infinite
A glycine–nitrate self-propagating high-temperature synthesis (SHS) was developed to produce composite MgO–Gd2O3 nanopowders. The X-ray powder diffraction (XR
The resistive switching (RS) mechanism of hybrid organic–inorganic perovskites has not been clearly understood until now. A switchable diode-like RS behavior i