从煤制取低灰分炭黑的新工艺

从煤制取低灰分炭黑的新工艺含灰量为１％的工业炭黑通常是由含灰分较少的石油渣油、煤焦油或天然气制造的。最近美国俄亥俄大学的化学教授，成功地从合灰量高达ｊ。ｌ／的煤制得了这种材料。这项工艺的关键是使煤进行部分转化，所得的炭黑粒要比末转化的炭小得多。利用这...     

Direct electroless Ni-P deposition on AM50 magnesium alloy from sulfate bath

A bright electroless Ni-P deposition on AM50 magnesium alloy in a sulfate plating bath was proposed by using direct plating process with non-chromate pretreatment. The electroless Ni-P plating on AM50 magnesium alloy has an admirable appearance and good adhesion. The results indicate that the electroless Ni-P deposition with non-chromate pretreatment has better adhesion than that of zinc immersion coating. Anodic polarization curves indicate that the electroless Ni-P deposition obtained from the sulfate bath has similar corrosion-resistance to that obtained from basic nickel carbonate bath. The deposition process generates less pollutant by a non-chromate plating bath and is suitable for the magnesium alloys manufacture because of its low cost. The hardness of the electroless Ni-P plated AM50 is about HV 720.6 and HV 969.7 after heat treatments at 180℃ for 2 h. The wear resistance of Ni-P plated magnesium alloy specimens is about 5 to 9 times as high as that of bare magnesium alloys.     

食品的防偷换包装

近几年来,由于包装食品遭偷换、掉包现象时有发生,促使专家们研究食品的防窃包装技术。除了现有的金属防窃瓶盖外,塑料瓶盖也已做成了防窃式。即将推广的还有日本三菱燃气化学公司     

铬鞣黄牛手袋革的研究

本文详细介绍黄牛手袋革生产工艺。     

文胸造型与弹性针织面料应用探讨

本文从文胸的发展方向及其面料发展趋势,分析了文胸的造型及其结构,提出了文胸的造型结构尺寸确定取决于弹性针织面料的弹性大小。     

营养保健菜谱

炖三参原料:花旗参40g,刺参1条,竹笙4条。调味料:香油数滴。做法:1.花旗参用3杯水泡软再切段;竹笙修剪后泡温水,待膨胀后切成两段,冲洗干净备用。2.刺参由腹部剖开,用汤匙挖除肠泥和杂质,冲洗干净,切块后放入滚水中氽烫,捞起。3.取一炖盘,放入泡好的花旗参和3杯水,一起放入电锅,外锅放一杯水煮至开关跳起。4.再加入刺参与竹笙一起煮滚,滴入香油,趁热食用即可。盐可随意适量地加入。彩色虾球材料:虾仁300g,姜2片,小黄瓜,胡萝卜各适量,樱桃萝卜5粒。腌虾料:盐1/4小匙,酒1大匙,淀粉1小匙。调味料:盐,香油各适量。做法:1.虾仁由背部划一刀,挑除…     

苏宁与诺基亚开展全面合作

近来，国际手机巨头纷纷与家电连锁商开展深度合作。继摩托罗拉之后，手机巨人诺基亚也和苏宁电器就全线战略合作达成协议，双方合作的内容包括B to B信息系统对接、Digital Suning（苏宁3C专营店）的重点合作、特供定制机型等。     

嵌入式液压同步控制装置

介绍一种新型的液压同步控制装置，利用该装置可方便地构成多路液压同步控制系统。与其他形式的液压同步控制系统相比，该装置结构简单、安装方便、成本低，同步精度高，最适用于联动折弯机，联动液压机等锻压设备。