生产羧基丁苯胶乳聚合釜的放大规律

根据羧基丁苯胶乳合成工艺的特点，乳液均成核机理和低皂聚合原理，拟定了聚合釜的放大规律应遵循的依据。通过冷模试验和工业性试验，推荐聚合釜适宜的搅拌器为改进四叶斜桨和四叶斜桨；回归试验数据得到改进四叶斜桨搅拌功能Ｎｐ＝２．７９（ＨＬ／Ｄ）｛（ｄ／Ｄ）＾－１４（ｂ２／Ｄ）＾０．８３－」（ｄ２－ｂ１）／Ｄ「＾－１４「（ｂ２－ｂ１）／Ｄ」＾０．８３×「（３－２ｂ１）／ｄ」＾５｝聚合釜。     

用化学法脱除羧基丁苯胶乳中残余苯乙烯

通过评价试验，筛选出一种氧化还原引发剂作为脱气剂，基础研究对其组分配比、用量以及工艺条件等影响脱气的因素作了考察。经模型和中间试验证明，用该脱气剂０．５～１．５份，在脱气温度２０～５０℃下，经２．５～３．０ｈ，可使羧基丁苯胶乳中残余苯乙烯含量由（５２８～１３４００）×１０－６降至２００×１０－６以下，且不影响胶乳的性能，脱气效果亦不受脱气釜规模的影响。     

不同聚合釜生产羧基丁苯胶乳的探讨

考察了１２．７ｍ＾３和１５．０ｍ＾３聚合釜在生产羧基丁苯胶中搅拌功率、搅拌级别、桨叶端速和传热能力以对聚合温度及产品质量的影响。结果表明，在传热能力强，搅拌级别适中的情况下，聚合温度容易控制，产品质量好，转化率较镐，能耗和物耗较低。     

一种新型结构胶乳聚合釜的设计

胶乳聚合釜足丁苯胶乳生产的关键设备之一，搅拌和传热装置的结构形式直接影响聚合过程进而影响产品质量。本文主要介绍了胶乳聚合釜搅拌器、传热装置设汁中采用的一些新型结构。     

丁苯吡胶乳和羧基丁苯吡胶乳的技术概况

介绍了丁苯吡胶乳（VPL）和羧基丁苯吡胶乳的聚合配方、聚合工艺、聚合方法、产品性能及其RFL浸渍液的配制和在胶帘线中的应用。VPL和羧基丁苯吡胶乳是化学纤维与橡胶粘合的高性能胶粘剂。不同制品、不同工艺、不同应用场合采用不同的VPL和羧基丁苯吡胶乳聚合配方、聚合方法及RFL浸渍液配合技术。羧基丁苯吡胶乳能提高聚酯帘线的耐热粘合性，其RFL浸渍液适用于浸渍子午线轮胎聚酯帘线。     

丁苯胶乳11m3聚合釜工业试验

对MBS用丁苯胶乳11m^3聚合釜工业试验进行了总结，研究了搅拌转速对反应过程的影响，优化了工艺配方，制备了性能优异的产品，并进行了性能测试。     

羧基丁苯胶乳生产釜挂胶的成因及清洗

综述了当前羧基丁苯胶乳聚合釜挂胶形成的主要原因及影响,介绍了常用的清洗方法及各自的利弊,并对其前景进行了展望。     

丁苯胶乳接枝苯乙烯制备苯乙烯类热塑性弹性体

本文介绍了采用自由基引发体系，以工业丁苯胶乳为主干物接枝苯乙烯，开展制备苯乙烯类热塑性弹性体的研究，在１０Ｌ聚合釜中进行了聚合配方和工艺条件等方面试验，试验产品经检测达到预定要求指标，与国外同类试验产品性能相近，填补了国内丁苯胶乳接枝合成新的技术开发空白。     

胶乳聚合釜新型内冷结构的设计

胶乳聚合釜是丁苯胶乳生产的关键设备之一,传热装置的结构形式直接影响聚合过程进而影响产品质量。本文主要介绍了在胶乳聚合釜内冷装置设计中采用的一些新型结构以及计算方法。     

水泥专用丁苯胶乳的工业放大试验

研究了水泥专用丁苯胶乳从2m3中试聚合釜到20m3工业规模聚合釜的放大过程。结果表明:采用单位体积功率与搅拌桨的叶端剪切速率相结合的放大准则,能够在20m3工业聚合釜重现2m3中试聚合釜的反应结果。以38→48→40r/min变搅拌转速的操作方式可以制得平均粒径为110~120nm、粒径分布指数为0·050~0·065和化学稳定性及机械稳定性优异的水泥专用丁苯胶乳。     

Emulsion polymerization and copolymerization in continuous reactor systems

Continuous reactors are important for commercial production of latex products and they can be useful tools for fundamental polymerization kinetics studies. Results are presented for four projects: (i) elimination of conversion oscillations in continuous stirred-tank reactors (CSTR) by use of a tubular prereactor; (ii) use of a seed-fed CSTR to measure free radical transport from monomer-swollen latex particles; (iii) development of a continuous process as an alternative to a commercial batch process; and (iv) determination of copolymerization kinetic parameters with a steady-state CSTR system.     

Continuous emulsion polymerization of vinyl acetate. Part I: Experimental studies

An interesting feature of commercial continuous emulsion polymerization reactors is the important phenomenon of sustained oscillations. Laboratory investigations of emulsion polymerization in a continuous stirred tank reactor (CSTR) have shown that the conversion, number of polymer particles and other related properties often oscillate widely with time. These oscillations can lead to emulsifier levels too small to adequately cover polymer particles resulting in excessive agglomeration and reactor fouling. Herein is reported an extensive experimental study of vinyl acetate emulsion polymerization in a CSTR. The effects of initiator and emulsifier concentrations, mean residence time and rate of agitation on the production rate and size distribution of polyvinyl acetate latices were investigated. Domains of reactor operation which give rise to sustained oscillations and massive agglomeration of the latex are mapped which give rise to sustained oscillations and massive agglomeration of the latex are mapped out. The effect of different start-up policies on reactor transients were also investigated.     

高转化率丁腈橡胶N32的中试放大

阐述了高转化率丁腈橡胶N32中试放大过程中的关键因素,确定了中间实验的聚合配方和工艺条件,制得了性能稳定的胶乳。通过控制脱气、凝聚、洗涤、干燥等工艺条件,保证了后处理过程的顺利进行。突破了转化率超过71％性能劣化的瓶颈,得到性能优良、贮存稳定性好的高转化率（75％～80％）丁腈橡胶N32新产品。     

Experience with a new type of reactor for Fischer-Tropsch synthesis

Circulating fluidised bed (CFB) reactors have traditionally been used for the high temperature Fischer-Tropsch synthesis-Synthol process. A development program undertaken by Sasol with the assistance of The Badger Company recently led to the successful commissioning of a commercial scale conventional, fixed fluidised bed (FFB) reactor as an alternative to the CFB reactor.Work was done in a small pilot plant which was followed by work in a 1 m diameter semi-works pilot plant operated in parallel with one of the commercial CFB reactors. Based on the positive results obtained, it was decided to build a commercial scale FFB reactor with a capacity similar to existing commercial reactors at Sasol One. This reactor was successfully commissioned and has been in operation since May 1989.The reactor is easy to operate and can withstand major plant instabilities. A techno-economic analysis and comparison between the Synthol-CFB and Synthol-FFB reactors indicates significant advantages for the Synthol-FFB reactor, both with respect to capital and operating costs. The results of this analysis and comparison are presented and the significance of the findings discussed in terms of future plants for the conversion of synthesis gas to liquid fuels.     

辛醇在无皂乳液聚合中的应用

提出了在无皂乳液中加入挥发性有机物质辛醇进行聚合反应 ,以提高乳液的性能及稳定性。详细讨论了各种因素对合成无皂乳液的影响 ,得出了最佳工艺条件 :辛醇的用量为单体质量的 3 0 % ;m(CH2 CHCOOC2 H5) ∶m(C6H5CHCH2 ) =1 0 0 0∶0 2 2 9;反应温度 85℃ ;反应时间3h ;恒温时间 0 5h ;乳液的 pH =8 0。加料方式 :辛醇与单体混合 ,乳化剂与水混合。实验证明 ,挥发性有机物质与极少数乳化剂的复合使用不仅提高了乳液的稳定性 ,而且也大幅度提高了乳液聚合物的性能 ,尤其是冻融稳定性得以很大的改善     

葡萄糖基可聚合乳化剂的合成及其在乳液压敏胶中的应用

丙烯酸酯乳液压敏胶是一类应用广泛的低VOC含量环保胶黏剂。本文合成了一种葡萄糖基可聚合乳化剂-丁基葡萄糖苷马来酸酯（BGMAH）,并采用半连续种子乳液聚合工艺制备了BGMAH改性的丙烯酸酯乳液压敏胶。通过系统考察BGMAH的结构及用量等因素对乳液粒径、乳胶膜耐水性和粘接性能的影响发现,当复合乳化剂质量分数保持3%不变,m(BGMAH):m(OP-10):m(SDS)=2:1.5:0.5时,乳胶膜的粘接性能和耐水性能最佳。红外、热稳定性等分析表明丙烯酸酯乳液在改性过程当中发生了共聚交联反应,且改性后聚合物体系相容性良好,乳胶膜的玻璃化转变温度和热稳定性均提高,同时对聚合体系的反应机理也进行了研究。