纳米粘土在高性能绿色轮胎中的应用研究

研究了纳米粘土在高性能绿色轮胎胎面胶中部分替代白炭黑的应用。结果表明,以纳米粘土等量或者增量替代白炭黑但替代比例不超过1:1.5时：混炼胶硫化速度稍快,填料分散效果较好;硫化胶物性相差不大;动态力学性能优,尤其是抗湿滑性能。     

纳米填料GW-080在轮胎胎面胶中的应用

研究纳米填料GW-080在轮胎胎面胶中的应用。结果表明:在胎面胶中以纳米填料GW-080部分替代白炭黑后,胶料的门尼粘度减小,t_(10)延长,t_(90)缩短,加工性能提高,Payne效应减弱,硫化胶在60℃时的损耗因子减小,滚动阻力降低;当纳米填料GW-080用量为30份时,硫化胶的综合性能较好。     

全钢载重子午胎胎面胶混炼工艺优化设计与研究

产品耐磨性与胎面胶混炼工艺密切相关,尤其是白炭黑的分散性及胶料门尼值高低,由于白炭黑的分散性涉及到白炭黑与硅烷偶联剂反应的适宜温度,另外门尼值的高低可通过控制生产段数来有效控制.本文围绕这一主题,对胎面胶的混炼工艺进行了优化设计与研究.     

白炭黑分散剂FNS-22W在半钢子午线轮胎胎面胶中的应用

研究白炭黑分散剂FNS-22W在半钢子午线轮胎胎面胶中的应用。结果表明：在胎面胶中加入2或3份白炭黑分散剂FNS-22W，胶料的门尼粘度减小，门尼焦烧时间缩短，流动性提高；硫化胶的物理性能和抗湿滑性能变化不大，滚动阻力降低，且胶料成本下降。     

复合型纳米氧化锌在高性能子午线轮胎胎面胶中的应用

研究复合型纳米氧化锌在高性能子午线轮胎胎面胶中的应用。结果表明,复合型纳米氧化锌因其粒径小、比表面积大且活性高,在胎面胶中可大幅减量替代间接法氧化锌使用。在胎面胶中以半量复合型纳米氧化锌替代间接法氧化锌时,硫化胶的白炭黑分散等级相当,密度减小,定伸应力提高,磨耗性能相当,0和60℃时的损耗因子略增大,能够实现在轮胎胎面胶中减少氧化锌用量、降低成本的效果。     

白炭黑分散剂ST在全钢载重子午线轮胎胎面胶中的应用

研究白炭黑分散剂ST在全钢载重子午线轮胎胎面胶中的应用。结果表明：在高填充白炭黑胎面胶中加入白炭黑分散剂ST,白炭黑的分散性提高,胶料的门尼粘度减小,应力松弛时间缩短,胶料的流动性提高,Payne效应降低,胎面挤出撕边问题明显改善;硫化胶的物理性能提高;成品轮胎的耐久性能提高,滚动阻力降低。     

均匀剂A78在炭黑/白炭黑并用体系轮胎胎面胶中的应用

研究均匀剂A78在炭黑/白炭黑并用体系轮胎胎面胶中的应用。结果表明:加入适量均匀剂A78,炭黑/白炭黑并用体系胎面胶的门尼粘度降低,分散性能和加工性能改善,交联密度增大,物理性能提高;成品轮胎的强度性能和耐久性能较好。     

炭黑和白炭黑对全钢载重子午线轮胎胎面胶生热和动态力学性能的影响

在全钢载重子午线轮胎胎面胶中加入不同用量炭黑N234,并将白炭黑与炭黑并用,考察炭黑用量和添加白炭黑对胶料性能的影响。结果表明:随着炭黑N234用量增大,不添加白炭黑的胶料Fmax和门尼粘度增大,门尼焦烧时间呈缩短趋势;密度、硬度和定伸应力提高,拉伸强度和回弹值降低,撕裂强度先提高后降低,耐磨性能提高,生热增大,炭黑用量不宜过大;在填料用量相当的条件下,添加白炭黑的胶料门尼粘度较小,门尼焦烧时间较短,撕裂强度和耐磨性能显著提高,生热明显降低;随着炭黑用量增大,不添加白炭黑的胶料弹性模量和损耗因子总体提高;总体来看,添加45份炭黑N234和10份白炭黑的胎面胶滞后损失和生热较低。     

白炭黑分散剂A60在轮胎胎面胶中的应用

本文分析了白炭黑分散剂A60对白炭黑、炭黑分散和改善胶料加工性能的作用。将白炭黑分散剂A60用于加有20份普通沉淀法白炭黑、33份炭黑的胎面胶中,使混炼胶的填料分散度提高,门尼粘度值下降,门尼焦烧时间延长,硫化速率有所减慢,硫化胶的压缩生热下降,300%定伸应力稍为上升。     

多相炭黑G10在半钢轮胎胎面胶中的应用

研究多相炭黑G10在半钢轮胎胎面胶中的应用,并与炭黑补强胎面胶和炭黑/白炭黑并用补强胎面胶（绿色配方）进行性能对比。结果表明：多相炭黑G10补强胎面胶加工性能优于炭黑补强胎面胶和炭黑/白炭黑并用补强胎面胶,具有更低的门尼粘度和更快的硫化速度;多相炭黑G10补强胎面胶的基本物理性能与炭黑/白炭黑并用补强胎面胶相当,但弹性和耐磨性能更为优异,且压缩疲劳温升更低;多相炭黑G10补强胎面胶的损耗因子低温下较高、高温下较低,可提高轮胎的抗冰滑和抗湿滑性能,降低滚动阻力。     

乙烯酮(双乙烯酮)下游产品废水的治理技术

乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。     

我国聚碳酸酯工业发展概况

介绍我国聚碳酸酯生产能力和消费需求,对聚碳酸酯在信息工业中的应用作了简短介绍     

Effect of degree of deacetylation of chitosan on the kinetics of ultrasonic degradation of chitosan

The objective of the study was to explore the effect of the degree of deacetylation (DD) of the chitosan used on the degradation rate and rate constant during ultrasonic degradation. Chitin was extracted from red shrimp process waste. Four different DD chitosans were prepared from chitin by alkali deacetylation. Those chitosans were degraded by ultrasonic radiation to different molecular weights. Changes of the molecular weight were determined by light scattering, and data of molecular weight changes were used to calculate the degradation rate and rate constant. The results were as follows: The molecular weight of chitosans decreased with an increasing ultrasonication time. The curves of the molecular weight versus the ultrasonication time were broken at 1‐h treatment. The degradation rate and rate constant of sonolysis decreased with an increasing ultrasonication time. This may be because the chances of being attacked by the cavitation energy increased with an increasing molecular weight species and may be because smaller molecular weight species have shorter relaxation times and, thus, can alleviate the sonication stress easier. However, the degradation rate and rate constant of sonolysis increased with an increasing DD of the chitosan used. This may be because the flexibilitier molecules of higher DD chitosans are more susceptible to the shear force of elongation flow generated by the cavitation field or due to the bond energy difference of acetamido and β‐1,4‐glucoside linkage or hydrogen bonds. Breakage of the β‐1,4‐glucoside linkage will result in lower molecular weight and an increasing reaction rate and rate constant. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3526–3531, 2003     

Semi-empirical equation of state of metals. Equation of state of aluminum

A semi-empirical equation of state for metals is described. Its capabilities are demonstrated by the example of the equation of state for aluminum. New experimental data are presented on the location of the isentrope of aluminum for unloading from the state at p = 229.71 GPa on the shock adiabat to an aerogel (SiO₂) of density 0.08 g/cm³. __________ Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008.     

水泥水化热测定方法综述

水泥水化热是中、低热水泥和核电工程用水泥的一项关键的技术指标。全球范围内测定水泥水化热的方法有溶解法、直接法/半绝热法、等温传导量热法三种。本文总结了中、美、欧相关方法标准,对其测试原理、仪器设备、试验过程等方面进行了比对,并对其在领域的应用做了简单的概括。     

Calorimetric and Computational Study of Enthalpy of Formation of Diperoxide of Cyclohexanone

A thermochemical rather simple experimental technique is applied to determine the enthalpy of formation of Diperoxide of ciclohexanone. The study is complemented with suitable theoretical calculations at the semiempirical and ab initio levels. A particular satisfactory agreement between both ways is found for the ab initio calculation at the 6–311G basis This set level. Some possible extensions of the present procedure are pointed out.     

气化给煤系统故障分析

气化给煤装置自投运以来,出现了气化煤仓堵煤、称重给煤机输送皮带因跑偏而损伤以及清扫装置故障频繁等问题,多次造成气化系统减负荷运行。通过对出现的各种问题进行分析,找到了产生这些问题的原因,并有针对性地采用配煤和改进清扫链等措施,使出现的问题得到了极大的改善。     

船舶柴油机涡轮增压器的清洗

采用喷射清洗剂的方法，清洗涡轮叶片积炭。     

杀虫磺缓释剂杀钉螺试验报告

杀虫磺缓释剂浸杀成螺、幼螺、螺卵效果好，现场应用缓释片６３克／米＾２，半年后活螺平均密度下降９３．２％，春季施药１次，可达到控制当年钉螺的扩散。     

醋酸纤维素取代基分布与性质的关系

分析了以吡啶为溶剂的醋酸纤维素的13C-NMR核磁共振谱,得出了三种不同位置羟基的取代度。结合X—射线和DSC分析,初步说明具有相同取代度但未经水解和经过水解的醋酸纤维素(CA) 性质上的差异是由于三个羟基上的取代度分布不同及消晶程度差异所致。