电子显微镜灯丝专用保护器

为保证图象的清晰度，电子显微镜的灯丝多采用Ｖ形结构，并工作于饱和状态，因此灯丝寿命一般只有３０～５０ｈ。专用保护器具有Ｖ形阻－温特性，能有效地防止冲击电流的产生，抑制过载电流，使灯丝寿命至少可延长到６０～８０ｈ。     

Isolation and characterization of polymers in heated olestra and an olestra/triglyceride blend

High molecular weight components in thermally oxidized olestra (formerly called sucrose polyesters) and a mixture of olestra and soybean oil were characterized. The high molecular weight components of these oils were separated by preparative size exclusion chromatography and analyzed intact by mass spectrometry, infrared, and nuclear magnetic resonance spectroscopy. The materials isolated from the heated olestra were identified as olestra polymers. Materials isolated from the heated mixed oil (olestra and soybean oil) were identified as polymers of olestra and copolymers of olestra and triglycerides. Polymer linkages identified were identical to those resulting from thermal oxidation of natural vegetable oils of similar fatty acid composition.     

涤纶织物的拒水拒油整理

采用含氟整理剂通过轧烘焙工艺整理涤纶织物,探讨含氟整理剂浓度、焙烘条件、醋酸与异丙醇及交联剂浓度对织物拒水拒油性能的影响,根据水洗后织物的拒水拒油性能优化整理工艺。结果表明,优化工艺对不同的涤纶织物都具有较好的拒水拒油效果,经5次水洗后,拒水等级不低于90分,拒油等级不低于4级。同时用扫描电镜观察整理后的涤纶纤维纵向表面形态在水洗前后的变化,对变化原因从理论上进行简要的解释,以此证实涤纶织物在水洗前后拒水拒油性能的变化。     

Filament-activated chemical vapour deposition of nitride thin films

We have applied the novel method of hot filament-activated chemical vapour deposition (HFCVD) for low-temperature deposition of a variety of nitride thin films. In this paper the results from our recent work on aluminium, silicon and titanium nitride have been reviewed. In the HFCVD method a hot tungsten filament (1500–1850°C) was utilised to decompose ammonia in order to deposit nitride films at low substrate temperatures and high rates. The substrate temperatures ranged from 245 to 600°C. The film properties were characterised by a number of analytical and optical methods. The effect of various deposition conditions on film properties was studied. All the films obtained were of high chemical purity and had very low or no detectable tungsten contamination from the filament metal.     

聚丙烯长丝土工织物水利性能和耐久性研究

优良的水利性能和耐久性是聚丙烯长丝土工织物在水利工程中长期稳定服役的关键,但相关研究数据的缺乏限制了对此类织物的深入理解及产品优化。通过研究不同单位面积质量和添加/未添加抗老化母粒织物的水利性能和耐久性发现:织物的水利性能,随单位面积质量增加而降低;高单位面积质量的织物皮层降解,但中间仍有未降解芯层,表现出耐久性增加的效果;同时,抗老化母粒的添加使织物水利性能稍有降低,但耐久性会显著升高,这归因于抗老化母粒具有阻止羰基形成、捕获自由基和分解过氧化物等作用。该研究为聚丙烯长丝土工织物的基础研究和实际应用提供了关键数据支撑。     

轿车子午胎聚酯胎体胶配方的研制

聚酯帘线是取代人造丝帘线用于轿车子午胎体的理想材料,但在胶料配方设计时必须解决聚酯帘线的降解和与胶粘合力较低等问题。     

毛涤织物起球影响因素统计分析

利用圆轨迹起球测试仪对9种精纺毛涤织物的起球性能进行了测试，建立了织物起毛起球等级与毛球数预测模型，得到了织物各结构参数对起毛起球的影响程度。     

无低聚物问题的聚酯织物染色

聚酯织物的浅色和中色色调染色工艺中使用德国司马化学公司开发的新型低聚物分散剂Zetesan Ole,就完全没必要进行碱后处理工艺。如果实施了预试验,则Zetesan Ole和纱线润滑剂可用于一浴法染色工艺中。     

丙纶强力丝复合稳定体系母料的研制与应用

利用稳定剂复配技术,通过优化配方研制出丙纶强力丝复合稳定体系母科。应用实验表明:该母料防老化性能好,可完全满足丙纶强力丝多方面防老化应用需要。     

由聚酯废料合成DOTP的研究

介绍了由聚酯废料为原料,用直接酯交换法合成ＤＯＴＰ增塑剂的反应原理,合成方法及产品应用。