Design and Application of Leather Replacement Tool for Belt Conveyor Seal

In order to solve the problem which may be generated in the case of manual replacement of the belt conveyor sealing leather, such as the operation space is small, the work efficiency is low and the finger is easy to be scratched, Using the principle of simulated bionics, through theoretical analysis and experimental verification,a tool was designed to replace the belt conveyor sealing leather. The tool includes a limit device, feeding device,U-shaped handle three parts, suitable for the replacement of various types and sizes of belt conveyor sealing leather. Use this tool to replace the belt conveyor sealing leather, the results show that： 1） The effect of replace belt conveyor sealing leather is good, belt conveyor sealing leather flat and solid. 2） The replacement proces saveraged 1. 77 min, shorter than the original method of more than 8 min. 3） Direct contact of the fingers and the metal baffle edge was avoided, so as to reduce the chances of a finger injury.

三维超疏水超细纤维绒面革的仿生构建

为解决超细纤维绒面革二维超疏水表面耐久性差的问题,提出了一种三维超疏水超细纤维绒面革的构建方法。将含氟水基聚氨酯和纳米前驱体正硅酸乙酯的混合液均匀含浸至超细纤维非织造布中,在弱酸性条件下诱发纳米前驱体在超细纤维绒面革内部原位生成纳米SiO_(2)颗粒,形成了整体具有自相似性的类荷叶微纳粗糙结构,仿生构建了三维超疏水超细纤维绒面革,并对其接触角、形貌特征、元素组成、摩擦耐久性和化学稳定性进行了测试与表征。结果表明:所制备的超细纤维绒面革表面水接触角高达153.5°;即使经受2100次摩擦,浸泡在乙醇、对二甲苯、四氢呋喃、正己烷、pH值为1和14的水溶液中24 h,皂洗10次,紫外光照24 h,热处理后其水接触角均可保持在150°左右,显示出优异的超疏水稳定性。

蛋白质的生物合成与模板聚合

本文联系生物体内蛋白质的生物合成、脱氧核糖核酸(DNA)遗传信息的存贮和复制,阐明了化学模板聚合的研究近况。从某种意义上说,遗传工程和蛋白质工程是化学模板聚合向高层次的生物模板聚合过渡的一个中间阶段,遗传工程的发展将使制革业得到质量优良的原皮,而另一方面,蛋白质工程的高度发展,将使皮革行业失去原皮.不过,这时可能成功地人工培育出胶原纤维组织,从而出现一种真正的“仿生革”.