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1.
为探究影响防静电服电荷量的因素,随机选取10套防静电服作为试样,先将10组试样分别放入60℃和常温的测试桶内,以测试试样在不同温度测试桶内测得的电荷量值,再将10组试样分别放入包覆聚丙烯腈标准摩擦布和包覆锦纶标准摩擦布的测试桶内,以测试试样在包覆不同标准摩擦布测试桶内测得的电荷量值.该试验结果表明,试样在60℃测试桶内...  相似文献   

2.
樊争科  丁丽 《棉纺织技术》2012,40(10):24-26
探讨滚筒摩擦机技术参数对服装带电电荷量测试结果的影响。通过分析新旧标准滚筒摩擦机的滚筒尺寸、滚筒转速、滚筒内温度及标准摩擦布等对服装防静电性能的影响,最终得出:采用新标准的滚筒摩擦机测试服装带电电荷量的数据较旧标准普遍偏大,其技术参数的改变对测试结果有一定的影响。认为:标准摩擦布材质对服装带电电荷量的测试结果影响最为显著,不能简单地以旧标准来衡量产品的防静电性能。  相似文献   

3.
本文解读的是最新修订的GB 12014-2019《防护服装防静电服》标准与2009年颁布的《防静电服》标准之间的技术增项和更新.新标准更加科学、严谨地表述了防静电服相关术语;新标准对于防静电服面料、服装的安全项目指标、功能性指标等关键指标都提出了新要求,既方便了检测工作的进行,又保证了使用者的安全.  相似文献   

4.
介绍可用于洁净室的特种产业用无硅防静电工作服的开发和生产。去硅处理解决了洁净室的有机硅污染问题,防静电不发尘面料的使用适合于操作者在洁净室环境下的长期穿着,最大限度地降低了服装对洁净室环境和产品质量的影响。  相似文献   

5.
依据新标准《防静电服》GBl2014-2009创新设计了一种自动摩擦装置。该装置采用微处理技术程序控制,实现了摩擦过程自动化,消除了人工取样对测试的影响。样机经过防护服静电性能测试,适用方便,测试数据重现性较好,可为配套新标准提供一种新型自动摩擦装置。  相似文献   

6.
在带电电荷量检测中,现行标准GB 12014—2009附录B的方法中,试样的选取和投样方式存在一定的差异性,因此本文针对不同的试样选取和投样方式下,对带电电荷量测试的结果进行了分析与研究。结果表明,在其他条件满足标准时,试样的选取和投样方式对带电电荷量的影响较大,且同一套防静电服的上衣的带电电荷量大于裤子的带电电荷量,自动投样方式测试的带电电荷量结果重现性好,且大于手动投样方式测试的带电电荷量,但是该装置也存在一定的缺陷,需进一步完善,并相应地提出了解决方法和建议。  相似文献   

7.
研究了打浆对5种纸浆(针叶木浆、阔叶木浆、竹浆、蔗渣浆、麦草浆)性质(如游离度、比表面积、比容、保水值、表面电荷量、总电荷量和抗张指数)的影响.在相同游离度下,与其他纸浆纤维相比,麦草浆纤维具有较高的表面电荷量和总电荷量.随打浆程度的增加,5种纸浆的比表面积、比容及保水值都增加,但电导滴定所测得的纤维总电荷量基本无变化,然而,用PDADMAC滴定所测得的纤维表面电荷量增加.打浆使纸浆纤维比表面积增加,进而增加纤维表面电荷量,增强纤维之间的结合力,从而提高纸张强度性能.  相似文献   

8.
金星明 《国际造纸》2005,24(5):43-48
荷兰的Brouwer博士在1990年Papermaking Conference学术讨论会上曾经提出了一种旨在优化纸机湿部化学助剂添加方案的湿部化学法,即:除了测定浆料体系的Zeta电位(溶解电荷和表面电荷)之外,还应该测定其阴/阳离子需求量;如果阳离子需求量很高,就应该用合适的阴离子垃圾捕捉剂来对浆料进行处理;使用高分子质量、低电荷密度的助留剂;使纸机在上网浆料系统表面电荷和溶解电荷都接近于零时运行。  相似文献   

9.
研究了导电纤维在织物中的置入方式对织物防静电性能的影响。通过选择不同的导电纤维、置入方式及防静电标准,测试并分析织物的防静电性能。结果表明:炭黑型导电长丝以经向、经纬向方式交织的织物均可以达到GB 12014—2009标准的要求;导电短纤混纺、炭黑型导电长丝经向镶嵌纬向交织的织物符合EN 1149-5:2008标准的要求。结论认为:可根据不同的防静电标准要求选择导电纤维的置入方式,以满足产品的防静电性能要求。  相似文献   

10.
狄宏伟 《国际造纸》2010,29(1):39-43
采用聚合电解质滴定技术研究了各种纸浆及处理后纸浆的总电荷和表面电荷之间的关系。虽然针叶木浆和阔叶木浆的总电荷量和表面电荷量不同,但是两者的电荷比基本相同。机械法制浆的电荷比高于化学法制浆。但是化学浆的电荷量随着不同的漂白流程而变化,而由于漂白过程是非表面选择性的,因此其电荷比不受影响。如果要改变化学浆的电荷比,需采取打浆或者表面羧甲基化等方法。  相似文献   

11.
Anti-static properties of cationic polymers on hair have been measured by using an electrostatic voltmeter. Comparisons are made with conventional cationic surfactants. Behaviour of cationic polymers from a cationic base and an anionic base have been explained. Experiments are performed to arrive at the hypothesis that cationic polymers form a complex with anionic detergent and that this cation-anion complex solubilizes in excess of anionic detergent, but on dilution with water it forms a turbid solution.
Propriétés anti-statiques de certains polymères cationiques utilisés dans les produits de soins pour les cheveux  相似文献   

12.
石油工业用抗静电过滤布的开发   总被引:5,自引:2,他引:3  
宋路明  李淳  牟效泉 《纺织学报》2005,26(2):130-132
在对比其它抗静电方法的基础上 ,从石油工业应用方面入手 ,采用涤纶和锦纶交织交并工艺 ,利用两者摩擦带电性能不同、可以实现静电中和的特点 ,设计开发了一种新型的抗静电过滤布。依照标准GB/T 12703—91测定电荷密度 ,对所开发的 21个样品进行了实践检验 ,并通过回归分析的方法 ,采用 2个方程模型对散点分布进行趋势优化 ,得出最优方案。  相似文献   

13.
相对湿度环境是农业生产监测与预测的重要内容,关系到植物的生长状况、多种病害的生态防治和灌溉措施的调节。针对相对湿度变化规律相当复杂,影响因素间非线性程度相当高,为了提高相对湿度预测精度,提出一种基于BP人工神经网络的相对湿度预测模型。该模型采用气象要素(日照时数、降水量、最小温度、平均温度和最大温度)实测数据作为神经网络的输入样本,并根据试验观测资料对模型进行了检验。结果表明:利用此模型分别对1987~1998年和1999~2000年陵水地区月平均相对湿度进行模拟和预测,相对湿度拟合值与实测值的相对误差为0.21%,相对湿度预测值与实测值的相对误差为0.28%。改进的BP人工神经网络能准确地捕捉相对湿度的变化趋势。运用BP人工神经网络方法进行相对湿度的研究,方法简洁,结果直观易懂,同时也为其他区域相对湿度研究提供借鉴。  相似文献   

14.
讨论了侧吹风的风速、风温、相对湿度及风道压力对涤纶POY条干不匀率的影响。通过选择更合理的侧吹风条件获得较为良好的条干不匀率。  相似文献   

15.
王雅娇  郭洁  姚思远  王颉 《现代食品科技》2013,29(12):2915-2920
本试验以海湾扇贝柱为原材料,进行薄层干燥试验,研究恒定风温下不同热风风速、相对湿度对产品干燥特性和品质的影响。测定干燥过程中水分含量和水分活度(Aw)的变化,并对所得产品的收缩率、复水率、色泽、质构等品质特性进行了比较分析。结果表明, 整个干燥过程均处于降速干燥阶段,起始阶段干燥速率下降最快,随着干燥时间的延长,干燥速率逐渐平缓。提高风速、降低热风相对湿度都可以显著缩短干燥时间,水分活度(Aw)下降速也越快。不同热风风速和相对湿度对干贝的质构特性、收缩率和复水率也有显著影响,但是对干贝色泽影响并不显著。综合考量干燥速率和干制品品质,选择热风风速为0.8~1.2 m/s、热风相对湿度在8%左右为较适宜的海湾扇贝柱热风干燥条件。  相似文献   

16.
《纺织学会志》2012,103(1):1-9
Abstract

The effect of different concentrations of Hydroperm T (a hydrophilic surface finishes) on the electrostatic charging and decay properties of filament polyester fabrics, has been investigated. The fabric was subjected to frictional charging with steel and PTFE (Teflon®) and the electrostatic properties were investigated. The technique adopted not only measured the charge in the location of the tribocharging, but was also able to assess the distribution and dissipation of the charge across the surface of the fabric. While the charge decay for the untreated fabric was slow and linear, a double exponential charge decay was observed on the samples treated with Hydroperm® T finish. The charge generated on the fabric treated with higher concentration (0.5%) Hydroperm® T finish decayed very quickly when compared to the other samples. Resistivity measurements indicate that the Hydroperm® T treated samples have lower resistivity when compared with the untreated samples.  相似文献   

17.
服装消费文化理论研究   总被引:11,自引:0,他引:11  
宁俊  马迁利 《纺织学报》2006,27(7):117-120
目前国内服装市场上的有效需求明显不足,很大原因出于服装厂商和消费者对服装价值构成不同方面关注的错位。因此,尝试性地从文化和社会的角度对服装消费这一经济行为进行分析。在服装文化和消费文化的基础上提出了“服装消费文化”的概念,并进一步对服装消费文化的理论架构和内容体系展开了阐述,主要包括服装消费观念、服装消费心理、服装消费审美和服装消费行为4个方面。  相似文献   

18.
    
《Journal of dairy science》2022,105(2):1701-1716
This study determined the effects of increasing ambient temperature (T) at different relative humidity (RH) and air velocity (AV) levels on the physiological and productive responses of dairy cows. Twenty Holstein dairy cows were housed inside climate-controlled respiration chambers, in which the climate was programmed to follow a daily pattern of lower night and higher day T with a 9°C difference, excluding effects from sun radiation. Within our 8-d data collection period, T was gradually increased from 7 to 21°C during the night (12 h) and 16 to 30°C during the day (12 h), with an incremental change of 2°C per day for both nighttime and daytime T. During each research period, RH and AV were kept constant at 1 of 5 treatment levels. A diurnal pattern for RH was created, with lower levels during the day and higher levels during the night: low (RH_l: 30–50%), medium (RH_m: 45–70%), and high (RH_h: 60–90%). The effects of AV were studied during the day at 3 levels: no fan (AV_l: 0.1 m/s), fan at medium speed (AV_m: 1.0 m/s), and fan at high speed (AV_h: 1.5 m/s). Effects of short and long exposure time to increasing T were evaluated by collecting data 2 times a day: in the morning [short: 1 h (or less) ? exposure time] and afternoon (long: 8 h ? exposure time). The animals had free access to feed and water and both were ad libitum. Respiration rate (RR), rectal temperature (RT), skin temperature (ST), dry matter intake, water intake, milk yield, and composition were measured. The inflection point temperatures (IPt) at which a certain variable started to change were determined for the different RH and AV levels and different exposure times. Results showed that IPt under long exposure time for RR (first indicator) varied between 18.9 and 25.5°C but was between 20.1 and 25.9°C for RT (a delayed indicator). The IPt for both RR and RT decreased with higher RH levels, whereas IPt increased with higher AV for RR but gave a minor change for RT. The ST was positively correlated with ambient T and ST was not affected by RH but significantly affected by AV. For RR, all IPt was lower under long exposure time than under short exposure time. The combination of higher RH levels and low AV level negatively affected dry matter intake. Water intake increased under all treatments except RH_l-AV_l. Treatment RH_h-AV_l negatively affected milk protein and fat yield, whereas treatments RH_m-AV_m and RH_m-AV_h reduced milk fat yield. We concluded that RH and AV significantly affected the responses of RR, RT, ST, and productive performance of high-producing Holstein cows. These responses already occurred at moderate ambient T of 19 to 26°C.  相似文献   

19.
Dynamic electrostatic generation and dissipation on polymer surfaces are of great importance for materials such as yarns and films. To support fundamental research in this area, innovative devices and experimental techniques that can lead to a better understanding of these phenomena are of obvious academic and industrial interest. This paper reports the development of devices for testing the electrostatic generation/dissipation properties of polymer surfaces. These devices include a tester for assessing moving yarns, a high-resistance system to measure the yarn's linear resistance, a tester for evaluating stationary fabrics or films while rubbing against a moving surface and a contact charge tester for investigating charge generated by contacting of two surfaces. These devices enable the study of the influences of relative moving speed, yarn tension, electrostatic charge properties of yarns, as well as contact pressure, rubbing speed, number of rubbings or contacts on the static charge properties of films.  相似文献   

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