均匀剂H40MSF在半钢子午线轮胎气密层胶中的应用

研究均匀剂H40MSF在半钢子午线轮胎气密层胶中的应用.结果表明：以均匀剂H40MSF等量替代均匀剂40MSF用于气密层胶中,胶料的混炼能耗降低,生产效率提高;胶料的硫化特性、炭黑分散性以及硫化胶的物理性能相差不大;成品轮胎的耐久性能和高速性能提高.     

均匀剂H40MSF在全钢子午线轮胎气密层中的应用

研究了阳谷华泰均匀剂H40MSF等量替代均匀剂A在全钢子午线轮胎气密层胶中的应用效果。结果表明：均匀剂H40MSF的各项指标均达到企业标准,在气密层胶中加入均匀剂H40MSF,胶料的门尼粘度、硫化特性和填料分散性与加入均匀剂A的性能基本一致,而硫化胶的拉伸强度、撕裂强度等物理性能提高,100℃×48h条件下的老化系数明显较高。     

均匀剂RH-100在斜交轮胎气密层中的应用

研究均匀剂RH-100在斜交轮胎气密层中的应用。结果表明,在气密层胶中以均匀剂RH-100等量替代均匀剂40MSF,胶料的混炼能耗和粘弹性相差不大,炭黑分散性改善,胶料的硫化特性和硫化胶的物理性能变化不大,气密性能提高,完全可以满足生产工艺和使用性能要求。     

均匀剂ZXJ3010在半钢子午线轮胎气密层胶中的应用

研究均匀剂ZXJ3010在半钢子午线轮胎气密层胶中的应用。结果表明:在气密层胶中以均匀剂ZXJ3010等量替代均匀树脂A,胶料的焦烧时间延长,硫化速度加快;硫化胶的300%定伸应力和拉伸强度增大,炭黑分散性和气密性能提高;成品轮胎的高速和耐久性能达到国家标准要求,且生产成本降低。     

均匀剂H40MSF在半钢子午线轮胎气密层胶中的应用

研究均匀剂H40MSF在半钢子午线轮胎气密层胶中的应用。结果表明：均匀剂H40MSF的环保性能符合欧盟2005/69/EC指令要求,能降低胶料的门尼粘度和混炼能耗,提高胶料的加工安全性能、耐屈挠性能和耐热老化性能,改善胶料的自粘性、炭黑分散性和气密性;胶料的定伸应力和拉伸强度减小,但能达到使用要求。     

均匀剂TNB88在半钢子午线轮胎气密层胶中的应用

试验研究均匀剂 TNB88 在半钢子午线轮胎气密层胶中的应用效果.结果表明,与均匀剂 40MS 相比,均匀剂 TNB88 胶料的门尼焦烧时间稍长,硫化速度较快,硫化胶的硬度和定伸应力略高,撕裂强度和耐屈挠性能略低,气密性能相当,成品性能略优.     

橡胶均匀剂ZXJ3010在半钢子午胎气密层胶中的应用

研究橡胶均匀剂ZXJ3010在半钢子午胎气密层胶的应用。结果表明：在气密层配方中用橡胶均匀剂ZXJ3010等量代替均匀树脂A能改善胶料的气密性能,保持硫化胶料物理性能和成品轮胎性能,使生产成本适当下降。     

均匀剂H40MSF在全钢子午线轮胎胎面胶中的应用

研究均匀剂H40MSF在全钢子午线轮胎胎面胶中的应用,并与国内外同类产品进行对比。结果表明：加入均匀剂H40MSF,胶料的门尼粘度减小,t5延长,加工安全性提高,FL和Fmax减小;硫化胶的拉伸强度、拉断伸长率和撕裂强度增大,炭黑分散性改善,耐磨、耐疲劳和抗切割性能提高,压缩生热降低,损耗因子减小,滚动阻力降低;均匀剂H40MSF在胶料中耐迁移,不易变色,污染小,其综合性能优于国产均匀剂A,与进口均匀剂40MSF相近。     

均匀剂40MSF在降低气密层配方含胶率中的应用

均匀剂40MSF在降低气密层配方含胶率中的应用     

氯化丁基再生橡胶在摩托车轮胎气密层胶中的应用

研究氯化丁基再生橡胶在摩托车轮胎气密层胶中的应用。结果表明,添加氯化丁基再生橡胶的硫化胶的拉伸强度、拉断伸长率和撕裂强度等性能无明显变化,并稍好于原配方硫化胶,完全可满足摩托车轮胎气密层胶的性能要求。用添加氯化丁基再生橡胶气密层胶生产的无内胎摩托车轮胎气密性良好,其高速性能和耐久性能均符合国家标准要求,并且可获得可观的经济效益。     

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     

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。     

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。     

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     

Process of acceleration of filtration of viscose

Conclusions It is significant that the purification on a single passage of viscose through porous ceramic corresponds to the result of a two-stage filtration of it in industrial filter-presses with standard fillings.Kiev Combine. Kiev Technological Institute of Light Industry. Translated from Khimicheskie Volokna, No. 3, pp. 20–22, May–June, 1969.     

Approximation of temperature dependence of the modulus of elasticity of glass

A refined nonlinear value of the main parameter of a material, i.e., the elongation modulus versus the instant temperature value, was suggested for introduction into the computational algorithm of tempering stresses.