氯化橡胶的研制与应用

阐述了氯化橡胶的实验室制法及其性能、用途以及目前我国北方氯化橡胶的市场情况。     

氯化橡胶和相关替代品在涂料行业中的应用评估

介绍了氯化橡胶的发展状况以及取代四氯化碳法生产氯化橡胶的必要性,主要对不同生产厂家的水相法氯化橡胶、溶剂法氯化橡胶、高氯化聚乙烯和氯醚树脂的各项性能进行了评估。     

水相法氯化橡胶的性能试验

通过选用3种黏度相近的氯化橡胶产品：CR-2水相法氯化橡胶、KL-10国产溶剂法氯化橡胶及GW—10进口溶剂法氯化橡胶，进行对比试验，检测了3种产品的常规性能，分析了红外光谱，并分别进行了配漆试验。结果表明：水相法氯化橡胶的质量指标达到了溶剂型氯化橡胶产品的质量指标，热稳定性优于国产溶剂型氯化橡胶产品，与进口产品性能相当；配制成涂料的各项性能符合船舶漆产品的技术要求，稳定性与溶剂型产品相当。     

氯化橡胶最新生产技术与市场分析

本文综述了氯化橡胶产品国内外生产技术最新进展,氯化橡胶替代品发展概况,分析了中国氯化橡胶产品的市场现状与发展前景,并提出了一些具体建议。     

氯化橡胶胆识其涂料的现状与发展

通过对氯化橡胶及其涂料的性能和应用特点进行分析,阐明了氯化橡胶及其涂料具有广阔的市场发展前景,并对其今后的发展提出了建议.     

氯化橡胶及其涂料的现状与发展

通过对氯化橡胶及其涂料的性能和应用特点进行分析，阐明了氯化橡胶及其涂料具有广阔的市场发展前景，并对其今后的发展提出了建议。     

氯化橡胶最新生产技术与市场分析（一）

本文综述了国内外氯化橡胶产品生产技术最新进展及氯化橡胶替代品发展概况,分析了中国氯化橡胶产品的市场现状与发展前景,并提出了一些具体建议。     

氯化橡胶及其在路标漆中的应用

1 前言氯化橡胶由天然橡胶或合成橡胶与氯气反应而制得,具有优良的粘附性、耐磨性、抗腐蚀性、快干性、防透水性和难燃性,广泛用于涂料、油墨、粘合剂等行业。氯化橡胶的生产已有70多年的历史。70年代末,氯化橡胶的世界耗量约为2万吨,目前产量已达3万吨以上。我国70年代初开始生产氯化橡胶,主要生产厂家是上海电化厂和广州化工厂。我国氯化橡胶主要用于制造路标漆和船舶漆,每年需要量较大且需部分进口,因此必须扩大氯化橡胶     

新溶剂法氯化橡胶生产工艺评价

介绍了非四氯化碳溶剂法氯化橡胶牛产工艺,总结了使用不同溶剂的生产工艺特点,对新溶剂法生产的氯化橡胶的应用性能进行比对,提出新溶剂法氯化橡胶生产工艺是氯化橡胶生产的发展方向.     

氯化橡胶的研究与开发

综述氯化橡胶的用途、应用领域和生产方法；介绍了氯化橡胶的最新生产工艺；分析了氯化橡胶的市场及发展前景。     

国产CR-244粘结型氯丁橡胶性能及加工应用

介绍了国产CR－244型氯丁橡胶技术性能和加工应用技术。其中的可接枝CR-244将是氯丁胶粘剂行业很有潜力的新产品。     

国产CR－244粘结型氯丁橡胶性能及加工应用

介绍了国产CR－244型氯丁橡胶技术性能和加工应用技术。其中可接枝的CR－244将是氯丁胶粘结剂行业很有潜力的新产品，该产品的工业化生产改善了国产CR－244不能与MMA接枝的缺陷。接枝共聚合的胶粘剂技术性能达到GB7126－86标准要求，接枝效果与A90相近。     

织物增强吸水胶管的技术改进

对织物增强吸水胶管进行了技术改造。骨架层织物以浸胶处理的Ｖ８５型维纶帆布代替棉帆布；内胶层胶料选用橡塑并用并配以一定量再生胶；外胶层胶料选用ＮＲ／ＣＲ／ＢＲ三胶并用；擦布胶胶料选用ＳＣＲ５标准胶并配以一定量再生胶。产品各项性能指标均达到ＧＢ１１８８－８９标准要求并通过市级鉴定。产品经济效益可观。     

煤矿用阻燃钢丝绳芯输送带粘合胶的研制

介绍煤矿用阻燃钢丝绳芯输送带粘合胶的配方研制。煤矿用阻燃钢丝绳芯输送带粘合胶优化配方为：氯丁橡胶70,顺丁橡胶30,氧化锌5,氧化镁4,硬脂酸1,防老剂2．5,炭黑30,阻燃剂50,硫黄1．0,促进剂1．5,增塑剂5。采用该粘合胶生产的输送带产品达到《煤矿用阻燃钢丝绳芯输送带技术条件》标准的要求。     

氯丁橡胶胶粘剂制备方法的探讨

氯丁橡胶胶粘剂的制备有3种方法,现常用混练法和直接溶胶法,通过对比和说明,建议各氯丁橡胶胶粘剂生产企业采用高剪切直接溶胶法。     

Improvement of properties of silica‐filled natural rubber compounds using polychloroprene

Because silica has strong filler–filler interactions, a silica‐filled rubber compound is characterized by a poor dispersion of the filler. Properties of silica‐filled natural rubber (NR) compounds were improved using polychloroprene (chloroprene rubber [CR]). The bound rubber content of the compound increases and the filler dispersion is also improved by adding CR to the compound. Physical properties such as modulus, tensile strength, abrasion, and crack resistance are improved by adding CR. Elongation at break of the vulcanizates containing CR is longer than that of the vulcanizate without CR, although crosslink density of the former is higher than that of the latter. The improved physical properties are attributed to the good dispersion of silica by adding CR. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 2609–2616, 2002     

氯丁橡胶的改性研究进展

氯丁橡胶是最重要的合成橡胶之一。本文综述了氯丁橡胶的填充改性、共混改性、接枝改性及化学改性,介绍了氯丁橡胶改性领域的技术进展和改性氯丁橡胶的主要特性及用途。相比于填充改性、共混改性和接枝改性,氯丁橡胶的化学改性研究相对较少,目前主要集中在氢化改性。相对于氢化,卤化改性不但能够饱和氯丁橡胶中的残余双键,而且可以提高橡胶的硫化活性,改善硫化困难的缺点,因此,优化氯丁胶的氢化改性工艺、探索氯丁橡胶的卤化改性、使其具有更好的综合性能将是今后氯丁橡胶改性的发展方向。     

Corrosion Resistance of Fused Cr_2O_3-Al_2O_3 Grains with Different Compositions

Six kinds of Cr2O3 Al2O3 fused grains ( the mass percent of Cr2O3 was 15% ,40% ,50% ,60% ,85% and 99% ,respectively) were prepared using chrome green and Al2O3 powder as starting materials by electrofusion,named as CR15,CR40,CR50,CR60,CR85, and CR99,respectively. The corrosion resistance of the six kinds of Cr2O3 Al2O3 fused grains ( 4 1 mm) was studied using rotary slag corrosion method. The results show that: ( 1) the corrosion resistance of the fused grains increases with the Cr2O3 content and the grain size increasing; ( 2) the grains of CR99 and CR85 with higher Cr2O3 content are corroded at the slag surface layer,because FeO and Al2O3 in the slag corrode the grains; FeO reacts with Cr2O3 in the aggregates forming ( Fe,Cr) 3O4 spinel firstly,and the spinel reacts with other phases forming composite spinel; when FeO is fully consumed,Al2O3 penetrated into the grains reacts with Cr2O3 forming Al2O3 Cr2O3 solid solution on the grains surface; ( 3) for CR60,the corrosion exists both in the slag surface layer and in the penetration layer; in the penetration layer,CaO and SiO2 react with Al2O3 in Al2O3 Cr2O3 solid solution forming anorthite, gehlenite, and glass phase; the grains of CR50,CR40 and CR15 have the same corrosion mechanism with CR60 in the penetration layer.     

The use of pure methanol as fuel at high compression ratio in a single cylinder gasoline engine

The methanol has greater resistance to knock and it emits lower emissions than neat gasoline. As single cylinder small engines have low compression ratio (CR), and they run with slightly rich mixture, their power are low and emission values are high. The performance can be increased at high CR if these engines are run with fuels which have high octane number. In this study, methanol was used at high CR to increase performance and decrease emissions of a single-cylinder engine. Initially, the engine whose CR was 6/1 was tested with gasoline and methanol at full load and various speeds. Then, the CR was raised from 6/1 to 8/1and 10/1, gradually. The knock was not observed at the CRs of 8/1 and 10/1 when using methanol while the knock was observed at the CR of 8/1 when using gasoline. The knock was determined from the cylinder pressure-time curves. The results showed that some decreases were obtained in CO, CO₂ and NO_x emissions without any noticeable power loss when using methanol at the CR of 6/1. By increasing the CR from 6/1 to 10/1 with methanol, the engine power and brake thermal efficiency increased by up to 14% and 36%, respectively. Moreover, CO, CO₂ and NO_x emissions were reduced by about 37%, 30% and 22%, respectively.