环保芳烃油AP15在轿车子午线轮胎中的应用

对环保芳烃油AP15在轿车子午线轮胎中的应用进行研究。结果表明:环保芳烃油AP15符合欧盟环保指令要求;填充环保芳烃油AP15胶料的混炼性能、混炼胶加工性能、硫化特性及硫化胶性能均与填充进口TDAE的胶料相近,表明环保芳烃油AP15可等量替代进口TDAE用于轮胎配方;采用环保芳烃油AP15的成品轮胎各项性能均通过了相应国家标准要求,且具有较优异的滚动阻力性能。     

环保填充油对丁苯橡胶性能的影响

研究不同环保填充油替代高芳烃油对乳聚丁苯橡胶(ESBR)和溶聚丁苯橡胶(SSBR)性能的影响。结果表明:SSBR对环保油的适应性较好,充环保油SSBR胶料的自粘性提高,硫化胶的物理性能相当,滚动阻力、耐磨性能和抗湿滑性能较优;ESBR对填充油的选择性较高,芳烃含量较低的环保填充油在其中存在析出现象,充环保油ESBR胶料的自粘性降低、抗湿滑性能稍差。     

环保型橡胶增塑剂的研制及其充油丁苯橡胶的性能

以环烷基油的减压三线馏分油为原料,采用加氢精制-溶剂抽提方法富集芳烃和环烷烃,并脱除有害性多环芳烃,制备芳烃含量高的环保型橡胶增塑剂。采用高性能轿车子午线轮胎胎面胶配方,对填充环保型增塑剂的丁苯橡胶SBR1763与填充高芳烃油的SBR1712和填充处理高芳烃油（TDAE）的SBR1723进行性能对比。结果表明,SBR1763的理化性能及其硫化胶的物理性能与SBR1723相近。     

环保油KT20在轮胎胶料中的应用

探讨环保油KT20在NR和NR/BR胶料中的应用,并与国外浅抽油（3527MES）、改性芳烃油（TDAE）和国内常用芳烃油（DAE）进行对比。结果表明,在NR和NR/BR胶料中,填充环保油KT20与对比油的混炼胶性能、硫化胶的物理性能和抗湿滑性能相当;填充环保油KT20,3527MES和TDAE硫化胶的滚动阻力相差不大。在NR胶料中填充环保油KT20,硫化胶的耐磨性能优于对比油硫化胶。     

辽河石化环保橡胶填充油在不同补强体系轿车轮胎胎面胶中的应用

以芳烃油（DAE）替代品环保芳烃油（TDAE）和DAE做对比,考察中国石油辽河石化分公司生产的2种环保橡胶填充油对不同补强体系轿车轮胎胎面胶性能的影响。结果表明,填充辽河石化2种环保橡胶填充油的胶料性能与填充TDAE的胶料相近;与填充DAE的混炼胶相比,填充辽河石化环保橡胶填充油和TDAE的混炼胶门尼粘度较低,焦烧时间较长,操作安全性好,硫化速度稍慢;与填充DAE的硫化胶相比,填充辽河石化环保橡胶填充油和TDAE的硫化胶压缩生热温升较低,拉伸强度和耐热老化性能相近,在苛刻条件下耐磨性能较好。     

环保增塑剂在乳聚丁苯橡胶中的应用

研究增塑剂种类和用量以及炭黑种类对乳聚丁苯橡胶(ESBR)性能的影响.结果表明:随着增塑剂用量的增大,硫化胶的物理性能均下降;在相同增塑剂用量下,与加入芳烃油的硫化胶相比,加入环烷油或环保芳烃油(TDAE)的硫化胶的压缩疲劳温升较小.随着应变和增塑剂用量的增大,胶料的Payne效应减弱;在相同增塑剂用量下,加入芳烃油的胶料Payne效应最强.在相同粒径炭黑胶料中,加入TDAE的胶料拉伸强度与撕裂强度最大,压缩疲劳温升最小;加入芳烃油与炭黑N220、N330的胶料Payne效应较强.     

环保芳烃油对充油丁苯橡胶性能的影响

对环保芳烃油（TDAE）替代普通高芳烃油填充的乳聚丁苯橡胶（ESBR）和溶聚丁苯橡胶（SSBR）性能进行研究。结果表明,TDAE在ESBR和SSBR中均可以替代高芳烃油用作填充油。用TDAE替代高芳烃油用作填充油后,ESBR和SSBR的大部分性能变化趋势一致,但拉断伸长率、阿克隆磨耗量以及抗湿滑性能变化却完全相反,SSBR比ESBR表现更佳。     

环保芳烃油对溶聚丁苯橡胶工艺性能的影响

研究几种环保芳烃油（TDAE）对溶聚丁苯橡胶（SSBR）工艺性能的影响,并与芳烃油（DAE）进行对比。试验结果表明：以TDAE替代DAE,随着油品运动粘度或芳烃含量的增大,SSBR生胶及混炼胶的门尼粘度先减小后增大;胶料的门尼焦烧时间延长,硫化速度减慢,t90随油品芳烃含量的减小而逐渐延长,自粘性较好,出口膨胀率减小;硫化胶的物理性能无明显差异。     

环保油在轿车子午线轮胎胎体帘布胶中的应用

试验研究经处理芳烃油(TDAE)和残余芳烃提取物(RAE)两种环保油等量替代芳烃油在轿车子午线轮胎胎体帘布胶中的应用。结果表明:环保油TDAE和RAE等量替代芳烃油,胶料的门尼焦烧时间和t90略有延长;硫化胶的物理性能变化不大;轮胎成品性能达到国家标准要求。     

环保填充油在轿车轮胎胎面胶中的应用研究

通过与国外芳烃油替代品TDAE比较,探讨国产环保填充油LHF18和LHF22对轿车轮胎胎面胶性能的影响。结果表明,与TDAE相比,LHF18和LHF22混炼胶的门尼粘度相近,焦烧时间延长,硫化速度稍慢;硫化胶的密度、硬度、弹性、动态力学性能、耐磨性能及耐热老化性能相近,定伸应力、拉伸强度和撕裂强度较大,滚动阻力较小,拉断伸长率较小。LHF18和LHF22可替代TDAE用于轿车轮胎胎面胶中。     

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。     

A study of miscibility of blends of polybutadienes of varying microstructure

The miscibility of various amorphous polybutadienes with mixed microstructures of 1,4 addition units (cis, 1,4 and trans 1,4) and 1,2 addition units have been investigated. The studies here involved optical transparency, differential scanning calorimetry, and small angle light scattering. It was found that a 90 percent (cis) 1, 4 addition polybutadiene was immiscible with high (91 percent) 1,2 addition polybutadiene. Reduction of the 1,2 content to 71 percent induced an upper critical solution temperature (UCST) with the cis 1,4 polymer. Polybutadienes with 50 percent and 10 percent 1,2 contents were miscible above the crystalline melting temperature of the cis 1,4 polybutadiene. Immiscibility of the 91 percent 1,2 addition polymer was also found with a 10 percent 1,2 polybutadiene. The latter polymer also exhibits an UCST with the 71 percent 1,2 polymer. The results are used to interpret the characteristics of blends of polybutadienes of varying microstructure.     

几种乙炔加压设备性能的比较

阐述并比较了几种加压设备在乙炔加压清净过程中的性能和特点。     

粉煤灰中烧失量检测的不确定度分析

以F类粉煤灰为例,详细介绍了测定粉煤灰中烧失量的步骤、计算数学模型、影响测量不确定度的因素以及各项测量不确定度分量评定,人员、设备、材料、方法、环境都是影响测量不确定的因素。     

生物油的成分分析及物性测定

以添加FeCl2的ZnCl2-KCl混合熔盐裂解纤维素和秸秆,制得生物油。采用傅立叶变换红外光谱法和气相色谱-质谱法分析生物油的成分。结果表明,生物油中成分复杂,含有氧元素、多种有机化合物,主要包括酮类、醛类、酚类及羧酸类等。测定了20～80℃生物油的密度和粘度,发现生物油的密度与温度呈较好线性关系,而生物油的粘度均大于水的粘度,且不同熔盐体系对秸秆生物油的粘度无较大影响。     

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     

分解炉扩径的技术改造

我厂3号回转窑(Φ4m×60m)生产线在1996年年底由SP窑(产量912t/d)改为NSP窑(产量1320t/d),预分解系统为四级旋风预热器带离线式分解炉     

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。