提高低硬度硅橡胶撕裂强度的配方设计

研究了提高硬度硅橡胶硫化胶撕裂强度的配方。结果表明，在甲基乙烯基硅橡胶中加入20－30份（质量份，下同）新型气相法白炭黑，将4份羟基硅油和0.4-0.8份二苯基硅二醇并用为结构控制剂，选用0.5-0.7份2．5－双（叔丁基过氧化）－2，5己烷作为硫化剂，可获得低硬度下撕裂强度达15－20kN/m的硅橡胶硫化胶。     

烧碱预处理对莫代尔织物数码印花的影响

研究聚焦于100%莫代尔织物的预处理,以及随后的数码印花中烧碱(NaOH)对印花质量,即印花深度、印花亮度和织物实用价值的影响。结果显示烧碱对织物的外观和舒适度有总体影响。研究还给出了莫代尔织物预处理中烧碱的最优用量。     

汽车前轮定位参数对轮胎异常磨损的影响

针对汽车前轮定位的空间性和汽车技术的发展,对前轮定位的作用、数值范围和检查调整．提出前轮定位参数与轮胎异常磨损的关系。     

工艺参数对铁基激光熔覆层组织和耐磨性的影响

采用激光熔覆技术在45钢表面制备铁基合金涂层,分析研究了在一定工艺参数范围内,熔覆区和结合区微观组织变化规律,摩擦磨损性的变化规律。结果表明:激光功率和扫描速度对熔覆层组织和耐磨性有规律性的影响,最终确定p=2.5 kW、v=3 mm/s~4 mm/s为优选工艺参数。     

Opening of Perforated Folding Cartons: From the Field to Testing

This study demonstrates how a human‐hand opening process for a perforated folding carton can be mapped into a path for testing. A field observation was conducted to visually record opening patterns by an observation group. The most representative opening pattern was then repeated by another observation group in the laboratory, and the resulting opening pattern and movements were captured and mapped mathematically via Matlab. The opening speeds were calculated based on opening path that is used to compare the testing machine. A fixture attempting to mirror the opening path was developed for perforated folding cartons to be tested by using tensile testing machine. The study suggested that the process, involving the identifying opening pattern, guided test and fixture equipped testing, can be applied to replication of human‐packaging interaction. Copyright © 2016 John Wiley & Sons, Ltd.     

X80管线钢不同温度下的落锤吸收能量测试

采用示波落锤法,对X80管线钢在不同温度下的吸收能量进行了测试,并对不同温度下的载荷－位移曲线及锤头速度曲线进行了比较。结果表明,不同温度下的载荷－位移曲线形状不同,且随着温度降低,达到最大载荷后的载荷下降速度加快。根据落锤吸收能量,绘制了韧脆转变温度曲线,得到了X80管线钢的韧脆转变温度,并与夏比冲击试验吸收能量绘制的韧脆转变温度曲线进行了对比。     

新型毛用柔软平滑整理剂的制备及应用

采用乳液聚合法制备了一种新型毛用平滑柔软整理剂。通过单因素实验,研究了整理剂用量、整理液pH值、浸渍温度、浸渍时间对羊毛织物性能的影响,确定其最佳工艺条件为:整理剂用量5%(owf),pH值5,浸渍温度40℃,浸渍时间40 min。研究表明,经过整理,不仅提高了羊毛织物平滑柔软的手感,而且其悬垂性、撕破强力、折皱回复角都得到了改善。     

大壁厚高钢级管线钢DWTT断口分析

对不同缺口形式和不同厚度的大壁厚高钢级管线钢试样进行了落锤撕裂试验,并对断口形貌进行了研究。结果表明:API RP 5L3对无效试样的定义已经不适用于大壁厚高钢级管线钢;大壁厚高钢级管线钢的DWTT压制缺口试样出现异常断口的几率较大。建议在试验时尽量采用人字形缺口的全壁厚试样;对于大壁厚高钢级管线钢,不管何种缺口形式的落锤撕裂试样,其断口都容易出现分离现象。     

Non-invasive pre-lens tear film assessment with high-speed videokeratoscopy

Purpose

To evaluate the effect of two types of daily contact lenses (delefilcon A and omafilcon A) on the tear film and establish whether it is dependent on pre-corneal tear film characteristics using a new method to analyse high-speed videokeratoscopy recordings, as well as to determine the sensitivity of the method in differentiating between contact lens materials on eye.

烘缸轴头磨损的应急处理

在纸机连续运转过程中,由于烘缸承受较高的温度和一定的压力,会在烘缸轴承位置出现磨损现象,造成设备无法运转。由于烘缸体积较大,企业一般无备用件,若即刻联系加工修复,不但拆卸运输困难,而且停机时间太长,给生产造成损失,影响企业经济效益。现就烘缸轴承位置出现磨损后现场采用的应急处理办法做一介绍。