阻燃剂FRC—2在纯棉织物的应用

通过正交试验确定了阻燃剂ＦＲＣ－２在纯棉织物上的最佳应用工艺：ＦＲＣ－２用量３５０～４００ｇ／Ｌ,催化剂用量１８～２０ｇ／Ｌ,焙烘温度１５０～１７０℃,并在实际生产中,经纯棉纱卡、府绸、帆布耐久阻燃整理。结果表明ＦＲＣ－２具有优良的阻燃效果和耐洗性,而且不影响整理织物原有风格和内在质量,成本比国外阻燃剂低,有推广价值。     

转杯纺产品开发的探讨

对转杯纺纯棉产品的开发方向,非棉产品的开发依据,拓宽域及其可开发产品品种等,进行讨论,供开发转杯纺产品参考。     

精漂染一浴法助剂SV-1的应用

由多种表面活性剂和高分子聚合物复配成的精漂染一浴法助剂ＳＶ － １ 具有渗透、匀染、稳定双氧水、净洗等功能。经直接、活性染料应用试验表明：ＳＶ－ １ 化学性质稳定,耐强碱,适用于纯棉针织物煮练、漂白、染色一浴工艺;染色的织物无硅斑,手感柔软,牢度和强力符合质量要求;而且缩短了工艺流程,节能省力,降低了环境污染     

用冠层温度计算作物缺水指标的一种简化模式

本文对Ｊａｃｓｋｏｎ等人提出利用作物冠层温度计算作物缺水指标的模式进行了简化，并根据甘肃民勤县棉花和宁夏吴忠春小麦的田间试验资料进行了验证，结果表明该简化模式可用于诊断作物缺水状况。     

Washable Multilayer Triboelectric Air Filter for Efficient Particulate Matter PM2.5 Removal

Efficient removal of particulate matter (PM) is the major goal for various air cleaning technologies due to its huge impact on human health. Here, a washable high‐efficiency triboelectric air filter (TAF) that can be used multiple times is presented. The TAF consists of five layers of the polytetrafluoroethylene (PTFE) and nylon fabrics. Compared with traditional electrostatic precipitator, which requires a high‐voltage power supply, the TAF can be charged by simply rubbing the PTFE and nylon fabrics against each other. The electrical properties of the TAF are evaluated through the periodic contacting–separating of the PTFE and nylon fabrics using a linear motor, and an open‐circuit voltage of 190 V is achieved. After charging, the TAF has a removal efficiency of 84.7% for PM_0.5, 96.0% for PM_2.5, which are 3.22 and 1.39 times as large as the uncharged one. Most importantly, after washing several times, the removal efficiency of the TAF maintains almost the same, while the commercial face mask drops to 70% of its original efficiency. Furthermore, the removal efficiency of the PM_2.5 is very stable under high relative humidity. Therefore, the TAF is promising for fabricating a reusable and high‐efficiency face mask.     

基于残差与注意力机制的原棉杂质检测北大核心CSCD

针对原棉杂质检测准确率不高的问题,以新疆棉花为研究对象,提出基于残差与注意力机制的原棉杂质检测算法。该算法为2阶段算法,准确率较高。首先,采集原棉杂质图象后对图像进行标注,再进行数据增广,可以避免训练过程中的过拟合现象,接着在原框架引入视觉注意力机制,通过改进算法结构来提高原棉杂质检测的准确率。其次,通过分析对比几种不同网络对原棉杂质检测的准确度,选取ResNet50为特征提取网络,该网络提高了算法的复杂特征提取能力。最后,采用RoI Align来减少量化误差,从而提高检测原棉杂质的准确性。实验结果表明,改进的算法虽然略微增多检测时间,但其整体检测准确率明显优于原算法,整体识别的准确率可达到94.84%,较改进前Faster R-CNN(faster region-based convolutional neural network)的识别率提高了5.58%。同时通过对比不同网络模型,结果显示改进后的Faster R-CNN对原棉杂质检测的效果更好。     

电路板用低介电纤维布

文章介绍了电路板用的低介电纤维及其制作纤维布和电路板基材的实验。通过将环烯烃共聚物（COC）纤维与玻璃纤维结合在独特的混合布中制成低介电（εr3．08,Dk0．013）电路板基材;将混合布中环烯烃共聚物纤维熔化构成树脂的一种成分,制成εr3．25,Dk0．0013电路板基材;将含环烯烃共聚物纤维混织布涂上独特的低介电树脂制成εr2．8,Dk0．0009电路板基材的试验,表明环烯烃共聚物纤维布是一种新型的性能优异的电路板增强材料。     

云计算概念、模型和关键技术

云计算指IP技术架构下的网络计算,其本质是ICT业务的一种新的应用方式。绝大数企业和运营商的数据中心的改造将是云计算未来发展的主要任务：使云计算技术更为普遍和更为广泛地为绝大部分企业、机构、团体和运营商服务。云计算技术将不仅提供传统意义的IT资源和应用服务,而且将支持包括IT、通信、电视、移动和物联等一切互联网技术融合后的资源使用和业务应用。云计算发展的关键技术主要有统一交换构架、统一虚拟化和统一计算系统,云计算发展的战略推手将是组建开放产业联盟和推动开放技术标准。     

Flame propagation in a tent camp

This paper presents an experimental study leading to the understanding and modelling of the effect of air speed and its direction on flame propagation in tent fabrics in addition to fire propagation in a tent camp. The study was conducted on burning fabrics of different densities subjected to wind speeds ranging between zero (stagnant) and 1.4 m s^?1. Moreover, several air directions with respect to the flame were considered in the study to cover the cases of vertically upward, downward, horizontally aiding and opposing, and inclined directions. These cases were used in simulating actual flame propagation in a tent. It is found that there is a logarithmic relation between the time of burning a tent and air speed and the density of tent fabrics. Two different types of fabric are considered; waterproof and non‐waterproof. It is also observed that the surface flame temperature is invariant with air speed or fabric density and it reaches about 650°C. The results show that denser fabrics require more time for burning. The maximum flame propagation speed is observed for vertically upward flame concurrent with air direction. On the other hand, minimum flame propagation is observed for vertically downward flames opposing the air direction. A model is derived for predicting the time required for flame propagation in a known camp area. Copyright © 2001 John Wiley & Sons, Ltd.     

纺织配棉流程棉纤维快速测量技术及其应用

针对国内纺织企业开始在配棉生产流程使用棉纤维快速测量技术来取代手工目测等落后、传统方法的现状,介绍大容量棉纤维性能测试仪的工作原理、技术特征、特点,以及棉纤维快速测量技术与传统方法生产效率的对比.通过大容量棉纤维性能测试仪在配棉流程的应用,认为:棉纤维性能快速测试技术使得纺织生产过程的棉花测试方法有了一个质的飞跃,为纺织企业配棉自动化提供了有力保证.