采用高分子合金修补剂修复损坏设备

采用高分子合金修补剂修复损坏设备广州石化总厂化肥厂张明慧近几年来，我厂在设备检修中采用高分子合金修补剂进行堵漏，修复磨损件、粘接修复破损断裂的设备及零部件等方面，已有许多成功的案例。解决了设备检（抢）修中许多因不能停车处理、动火补焊和没有备件更换等困...     

用粘接技术修复模具的工艺

1　前言在用中空吹塑机生产塑料瓶时 ,当模具使用一段时间后 ,由于受成千上万次的反复碰撞、振动以及模具结构、模具材料和模具安装诸因素的影响 ,使得模具底部变形 ,造成产品严重缺陷。表现在模具闭合时底部密封不严 ,当压缩空气进入模具后 ,绝大部分气流从模具底部泄漏 ,故无法吹制出合格产品。如果更换模具 ,则无疑会增加生产成本 ,造成较大的经济损失 ;而用常规的机械加工手段修复模具 ,不仅加工难度大、修复周期长、修理成本高 ,而且也很难保证获得满意的修复效果。针对这种情况 ,我们采用了粘接工艺 ,很好地解决了这个问题。2　修复工…     

工业修补剂在变脱塔腐蚀坑修补中的应用

概述耐腐蚀工业修补剂的性能特点，重点介绍耐腐蚀工业修补在变脱塔修补中的应用及粘接工艺。     

自修复高分子材料

高分子自修复材料自发明至今一直是智能材料领域的研究热点,相对于其他无机杂化等材料,其具有无可比拟的优势,且符合可持续发展的战略需求。本文主要介绍了高分子自修复材料的性能,其中从作用机理出发,着重阐述了本体型自修复材料的相关内容,并对自修复材料的发展和应用进行了展望。     

锅炉水处理排水槽断裂的粘接修复

<正>吉林吉化锅炉水处理排水槽,经长期使用后出现多处断裂,严重影响生产的顺利进行。该排水槽是由环氧玻璃钢制成,其连接处全部断开,全长为40m左右。采用粘接修复法具有施工操作简便、成本低等优点,断裂排水槽经粘接修复后,历时2年多,机器运行正常。     

XM-250／20G密炼机转子损坏轴颈的修复

针对转子轴颈的磨损,采用了一种较为省时、省功的修复办法.该方法是采用修补剂在磨损部位粘接,固化后加工的方式.介绍了修复工艺、修补剂配比、注意事项等.该方法省时,省功、省钱,效果也比较好.     

结构用自修复型高分子材料的制备

社会现代化发展进程的不断加快使高分子材料数量及性能呈现出多元化发展态势。其中,结构用自修复型高分子材料属于智能型材料,可通过内部自诊断、自响应功能,及时修复加工裂缝,对提升产品质量具有重要意义。基于此,对结构用自修复高分子材料的制备进行相关概述,旨在充分发挥出用自修复型高分子材料优势,为此类材料的实际应用提供理论依据。     

难粘高分子材料的表面处理技术

本文综述了聚乙烯、聚丙烯、聚四氟乙烯等难粘材料的表面处理技术的发展状况和新进展 。     

用粘接方法修复大型断裂轴类零件

通过断裂辊轴修复实例，介绍了用粘接方法修复轴类零件的方法，并给予了理论证明及工程实践的检验。     

物化法处理松脂加工废水

采用物化方法处理松脂加工废水,竣工检测结果表明,处理后废水污染物大大降低,出水完全满足生产回用水的要求,实现废水零排放。     

采用表面粘涂技术提高设备的抗腐蚀性能

通过表面粘涂，对受到腐蚀、冲蚀、气蚀的设备进行表面修补与防护，可提高设备的使用寿命。     

反应釜高压水射流清洗设备研制

根据反应釜的结构特点设计出了合适的清洗设备.设备中三维旋转喷头伸缩机构和三维旋转喷头的合成运动保证了高压水射流可以覆盖反应釡内任何位置,完成对反应釜的清洗,并在应用中得到了较好的效果.     

Adhesive bond strength development evaluation using ABES in different lignocellulosic materials

This paper presents a new application of Automated Bonding Evaluation System (ABES) for studying the reactivity of adhesive–substrate combinations (adhesive–cork, impregnated paper–wood and laminate–wood); a new sample configuration and a new kinetic model are proposed. Isothermal bond strength development was plotted as a function of time for several platen temperatures and the kinetic parameters were computed from these plot families, for each type of adhesive and combinations. The methodology developed showed to have potential in quantitative screening of adhesives and operating conditions in industrial context (production of cork composites, melamine faced boards and high pressure laminates).     

超大型压力容器的现场组焊技术初探

随着石油化工行业的发展,压力容器逐渐向大型、超大型化发展,由于超大型化势必带来制造和运输过程中出现诸多困难,造成制造成本增加。只有采用现场组焊或制造技术,才能降低制造成本。     

Optimization of the main liming process for inulin crude extract from Jerusalem artichoke tubers

A three-stage homogenate extraction was used as a new method for inulin extraction from Jerusalem artichoke tubers. Compared with the results from conventional hot water extraction, the three-stage homogenate extraction gave higher yields and caused less degradation of the inulin. The inulin crude extract was then clarified by a carbonate-precipitation method, during which three variables — the quicklime mass, the reaction temperature and the reaction time were optimized for the main liming process to give the best clarification effect. A Plackett-Burman design, the path of steepest ascent method, a Box-Behnken design and response surface methodology (RSM) were employed in the experimental design. The optimal conditions for the main liming process were determined to be 12.0 g/L, 71.4°C and 8 min. The confirmatory tests proved that the best clarification efficiency (92.74%) was achieved at these conditions and this was approximately equal to the value predicted by the model.     

改性氧化淀粉填充聚乙酸乙烯酯制备API胶主剂

淀粉经氧化后再与尿素缩合改性,作为聚乙酸乙烯酯乳液的填充剂,制备一种胶合板用水性高分子-异氰酸酯胶（API）主剂。实验研究了氧化剂用量、改性淀粉填充量、聚乙烯醇用量以及异氰酸酯用量对胶合板湿强度的影响,确定了较佳的配比,制得了一种低成本、环保的API胶主剂。     

Recovery of bitumen from oilsands: gelation of ultra-fine clay in the primary separation vessel

The bulk of bitumen recovery from oilsands takes place via a flotation/settling process in the primary separation vessel (PSV). Under certain conditions, some oilsands slurries become non-segregating, i.e. both fines and coarse solids remain in suspension and little or no bitumen froth is generated. An ultra-fine (<0.3 μm) component of the oilsands fines fraction (<44 μm) is identified as having the potential to be the major contributor to the thickening (gelation), or sludging, phenomenon observed in some ores.In this work we determined the amounts of ultra-fines in oilsands from different depositional environments. Although a generally linear correlation exists between ultra-fines and fines or clay contents, some samples were found to have a disproportionately high ultra-fines contribution relative to other oilsands. Waste units, in particular, were found to be extremely rich in the ultra-fines and clay-sized fractions.We used a ²H NMR method to measure both the rate and degree of gelation of ultra-fines suspensions separated from oilsands. Sludging conditions are reached when the ultra-fines concentration is between about 1.5 and 2.0 w/w%. Measurement of ultra-fines gelation times showed them to be of the same order as slurry residence time in the PSV. Laboratory jar tests have demonstrated that poor segregation of oilsands components can be correlated with the gelation conditions determined by NMR measurements.     

集气管压力协调控制系统的应用

针对焦炉集气管系统的工艺流程特性,以＂煤气输送平衡＂为核心提出了一种压力协调控制系统,通过实时采集炼焦、鼓风、化产相关工序生产数据,监测煤气输送全流程状态,协调各个工序设备单元的操作。系统在实际应用中取得了良好效果,实现了煤气生产和输送全流程各节点的煤气平衡,解决了集气管压力控制问题,优化了煤气输送的生产运行和管理。