植—铝结合鞣凉席革工艺研究

本文研究了植—铝结合鞣法制造凉席革的生产工艺,通过对比得出先铝鞣后植鞣的生产工艺。文中着重研究了以植为主的铝—植结合鞣法,以酪素为主的蛋白涂饰工艺,使产品保持了天然皮革良好的卫生性能。文中给出了植—铝结合鞣凉席革较完整的生产工艺。     

铝钛锆鞣对鞋面革的纤维结构和物理机械性能的影响

皮革的微观结构取决于原料皮的品种质量,构形区段和皮革的制造方法,并影响其物理机械性能。本课题的目的在于确定铝钛锆鞣对鞋面革微观结构和物理机械性能的影响。用铝钛锆鞣面革和铬鞣革——参比革作为研究对象,用皮革可比半面研究纤维结构和物理机械性能,采用的原料皮为小牛皮、牛犊皮和中牛皮,皮革的制造方法为公认的方法以加工成实验革和参比革。物理机     

美国猪皮制造凉席革探讨及工艺

前言 目前国内生产凉席革的厂家不多,基本集中在四川,用于生产的是黄牛、水牛、耗牛皮,品种有轻染色及轻涂饰、轻染色、不涂饰、不染色不涂饰等。 笔者有幸地接触到大量美国猪皮用于制革(但主要生产服装及沙发革)。其张幅大,皮板厚实,部位差很小。这与牛皮有相似之处,故给制造凉席革奠定了基础。而猪皮凉席革真皮     

一、工艺技术及产品部分

项目名称:水牛凉席革的研制完成单位:浙江省金华市制革厂、成都科技大学组织鉴定单位:浙江省二轻总公司(受浙江省计划经济委员会委托)鉴定日期:一九八八年十一月二十九日项目内容简介:皮凉席革是我国五十年代前四川东南部的一个传统产品,系采用黄牛皮制作,制作工艺早已失传,无人知晓。由于皮凉席革具有天然皮革良好的透气和透水汽性、吸汗、夏凉及经久耐用的特点,因而深受消费者的     

水牛皮制造轻革

在我国南方诸省和一些东南亚国家,水牛皮是一种产量丰富的皮源。特别是在两广地区,水牛皮占当地牛皮资源的70％以上。所以,如何根据水牛皮的特点,发展相应的皮革品种,是摆在制革工作者面前的一项新课题。在西方国家,例如西德,对水牛皮所特有的粗大粒纹非常感兴趣,他们不惜以相当可观的价格争相购买水牛皮的成革或半成品用以制作家俱和箱包等皮件。我厂利用水牛皮制造轻革,已有十多年的历史。在七十年代,主要生产水牛手套革、     

水牛沙发革的试制与生产

水牛皮是一种厚而厚度不均匀的皮。纤维束粗大且编织疏松,粒面粗糙,有明显的乳状突起和皱褶。这些特征决定了水牛皮宜于制造工业用革和低档产品底革。长期以来,我厂绝大部分的水牛皮就是生产这几种革。 1980年以来,先后两批西德制革专家来闽技术交流,他们对水牛皮很感兴趣,特别是对水牛皮制成的苯胺革和半苯胺革有独特优美的天然粒纹、富有真皮感等方面给予很高的评价,他们对我省丰富的水牛皮资源用于制造底革等产品感到很可惜,为此,向我们介绍了水牛皮资源丰富的东南亚各国都利用水牛皮加工成高级的沙发革的情况,大大地提高了水牛皮的使用价值。     

居室装饰挂袋

1.使用2.5mm厚的牛皮凉席革和1.8mm厚的牛皮革(粒面革、剖层革及其下脚料均可),并准备一根小圆挂杆(直径1.5cm,长48cm); 2.按照图二所示的挂袋和底贴面平面图尺寸制作纸板; 3.把选好的牛皮革和牛凉席革料喷水回潮,展平(处理好的整张革除外),然后按挂袋纸板和底贴面纸板下料;     

高性能无Cr黄牛皮汽车革的试验工艺

采用清洁准备工段技术片段集成,如保毛脱毛、低灰低硫、无氨脱灰、少盐浸酸等作为黄牛皮汽车革制造过程.多种有机鞣剂进行复合结合鞣,保证较高的收缩温度和物理力学性.工艺中对无Cr鞣产品其他品质和加工要求也进行了考虑.根据试验工艺获得的黄牛皮汽车革产品经检测,抗张强度为23.8 MPa;撕裂强度为97.8 N/mm;收缩温度为97.4℃.     

水牛正面沙发革研制技术探讨

为了挖掘水牛皮制革的潜力,使之制造出高档皮革产品,1985年初,省经委给我们厂下达了研制水牛正面沙发革新产品的任务。我们经过大小13批、前后近半年的试验,年底正式通过了省级鉴定,与会专家一致认为:“水牛沙发革是目前国际上流行的时尚产品,深受用户欢迎,并有较高的经济效益,该产品的研制成功,为我省填补了一     

成都温江区祥和化工厂新产品展示

<正>成都温江区祥和化工厂为满足目前四川地区牛皮凉席革生产需求,与四川大学等高校合作自主开发出抗氧化、无异味、耐高温烘烤的系列皮革加脂剂,经一些凉席革厂家大生产使用反馈:该系列加脂剂加脂后皮革丰满柔软性突出,软而不松,腹肷部填充良好,皮     

聚酰亚胺的导电性能及其与铝的离子束混合研究

研究了150 keV Kr~+离子注入对聚酰亚胺(PI)导电性能的影响。发现 PI 样品注入 Kr~+离子后的室温电阻率比注入 Kr~+前降低约16个数量级。用范德堡法测量了193K至293K 温度范围内的电传导行为,对损伤层内的电传导机理进行了讨论。以150keV Kr~+轰击 Al/PI 双层薄膜系统。用背散射分析及误差函数拟合法对实验结果进行拟合计算,得到了 Al 在 PI 中的深度混合扩展量。     

酵母抽提物在肉制品中的应用研究

本课题研究了安琪酵母抽提物的特性、添加量及对多种肉制品品质的影响,证明了安琪风味化酵母抽提物在肉制品中应用效果明显。实验得出了酵母抽提物在肉制品中的添加量范围及最佳添加量——风味化酵母抽提物添加范围0.2～0.6%、最佳用量0.4%;普通型(LB05)添加范围0.2～1.5%、最佳用量0.8%;酱卤专用型添加范围0.2～1.0%、最佳用量0.6%;酵母抽提物还可以替代部分调味调香料(如:香精、味精、I+G等),既降低了生产成本又提高了成品品质,是一种新型的肉类制品调味料与品质改良剂。     

Comparison between artificial neural network and response surface methodology in the prediction of the parameters of heat set polypropylene yarns

In the present paper, a response surface model has been introduced to predict the geometrical parameters of heat set polypropylene pile yarns. The input factors of the presented model include yarn twist, initial yarn count, time, and temperature of heat setting and the response factors are yarn count, yarn shrinkage, crimp contraction and packing factor after the heat setting process. To analyse the effect of this process on the yarn parameters, the dry heat setting process has been applied to all samples at different times and temperatures using an oven equipped with air circulation because of better accuracy and control of temperature. The obtained results showed that there is a positive relation between time and temperature and output parameters. Finally, the predicting equations discussions about the optimum points for maximum shrinkage and interactions of parameters have been presented. Hence, due to some disability of the RSM method, an ANN model has been designed to predict the parameters at higher accuracy. The results of the accomplished ANN model represent a higher prediction correlation coefficient compared to RSM.     

关于乌饭树黑色素制备的新思路

乌饭树黑色素的研究虽然已经进行了多年,但其制备过程却一直没有受到应有的重视,从而使其成为制约乌饭树黑色素产业化的一个瓶颈.本文从乌饭树黑色素制备过程中的浸提、氧化发酵、纯化和干燥四个方面进行了必要的分析,并提出了一些较为新颖的观点:第一,氧化发酵过程是乌饭树黑色素形成的必要条件;第二,树脂是纯化乌饭树黑色素的更好选择;第三,不能用黄酮类物质的含量来度量乌饭树黑色素的含量.希望这些观点能为乌饭树黑色素的产业化提供一点新思路.     

A Clamp for the Tensile Testing of Fibre Bundles

A theoretical analysis has been developed in which it has been assumed that the two-stage process that occurs during the relaxation of wool yarns leads to the same change in structure as a single dry-relaxation process. In the present paper, a detailed experimental evaluation of the theory is reported whereby its predictions are compared with results obtained for wool semi-worsted carpet yarns spun at various twist levels.     

Optimal Nutrient Retention during the Thermal Processing of Conduction-Heated Canned Foods: Application of the Distributed Minimum Principle

The Minimum Principle of optimal control theory has been applied rigorously to a distributed parameter model for the heat treatment of canned foods to determine control policies for optimizing nutrient retention for a given reduction in microorganism concentration. It has been shown that bang-bang control of the retort temperature is the optimal control strategy to adopt, where the heating and cooling rates should be as rapid as is permitted by process constraints. There should be only one heating and cooling cycle during the sterilization process and not a series of heating and cooling steps. This conclusion differs from those of other studies, where complicated retort temperature-time profiles have been suggested.     

纤维素纤维工业连续母料工艺

由于下游过滤器和喷丝板的制约,纤维素溶解器需要用低黏度混合物操作一直制约着纤维素纺丝原液的质量和通过量。瑞士List公司开发了MasterConti工艺,消除了溶解工艺和下游工艺相互间的影响,从而克服了上述制约。该工艺已通过试验验证,现能用于新装置,也可用于扩大现有装置的产能。     

稀土对毛皮染色过程中吸附作用的影响

为了说明稀土在毛皮染色中所起的作用,对稀土助染时,染料在羊毛上的吸附过程进行了初步研究,并与常规染色过程进行了比较。结果表明, 稀土助染时, 羊毛对酸性染料的吸附仍属于Ｌａｎｇｍ ｕｉｒ吸附,但染料在羊毛上的吸附饱和值大于常规染色时的吸附饱和值, 从而从理论上说明了稀土助染的毛皮色泽鲜艳、浓厚的原因     

针叶木浆废水处理工程的运行效果分析

以黑龙江某造纸厂废水处理系统为例,详细介绍了采用铁碳微电解床、生物选择池等预处理并配合射流曝气工艺进行处理的工艺流程,调试过程中采用自培菌,并且介绍了如何在低温情况下启动的问题,处理后的出水达到国家污水综合排放制浆造纸工业新标准GB3544-2008。     

Unveiling the molecular basis of intrinsic skin aging(1)

The process of skin aging is a combination of an extrinsic and intrinsic aspect, and knowing the molecular changes underlying both is a prerequisite to being able to effectively counter it. However, despite its importance for a deeper understanding of skin aging as a whole, the process of intrinsic skin aging in particular has barely been investigated. In this study, the molecular changes of intrinsic skin aging were analyzed by applying 'Serial Analysis of Gene Expression' (SAGE(TM)) to skin biopsies of young and aged donors. The analysis resulted in several hundred differentially expressed genes with varying statistical significance. Of these, several genes were identified that either have never been described in skin aging before (e.g. APP) or have no identified function, e.g. EST sequences. This is the first time that intrinsic skin aging has been analyzed in such a comprehensive manner, offering a new and partially unexpected set of target genes that have to be analyzed in more detail in terms of their contribution to the skin aging process.