强捻纱线织物的服用性能测试分析

采用强捻纱线以平纹组织和斜纹组织进行小样试织,与一般棉织物透气性和耐磨性作对比测试分析。结果表明,强捻纱线织物的透气性和耐磨性都优于普通棉织物;纱线线密度和捻度,织物组织及经纬密度直接影响织物的透气性和耐磨性。     

不同涤纶机织物的透气性研究

文章从纤维材料到纱线再到织物三个环节对不同涤纶机织物的透气性能进行探讨。结果表明在同样的纱线原料、纱线捻度且织物紧度相近的条件下,斜纹组织透气性最佳,平纹组织次之,重平组织最差;在织物结构相同、纱线捻度近似、而纱线原料不同时,织物的透气性变化严重;在纱线原料和织物组织都相同的情况下,捻度变化规律复杂,纱线对织物透气性的影响存在着临界捻度的问题。     

小应力作用下涤粘仿毛织物的回弹性

研究了涤粘仿毛织物在小应力作用下的回弹性,根据分析20块不同种类的涤纶、粘胶仿毛织物的面积质量、经纬纱线密度、经纬纱线捻度、经纬纱线缩率以及织物的经纬密度,利用FAST-3织物风格仪测试织物经纬向的弹性伸长,利用SPSS软件进行多元回归分析,并根据P检验和t检验法则分别判断多元回归方程与各个参数的显著性,分析影响仿毛织物回弹性的因素。     

载银抗菌剂在不同织物上的抑菌及水洗性能研究

对不同的棉织物进行抗菌后整理,并对各组织物的抗菌性能、耐水洗性能以及透气性能等进行研究,探讨棉织物的纱线线密度、经纬密度等因素对织物各项性能的影响。研究结果表明:织物经纬密度越大,纱线越粗,越有利于抗菌剂的附着,其最终的抗菌性能较好,但相应造成织物透气性有一定下降;在耐水洗性方面,织物经纬密度越大,纱线越粗,最终的耐水洗性能以及抗菌性能保留率较好,经40次水洗,抗菌性能保留率仍能达到40%以上。     

干爽涤纶织物透气透湿性能测试与分析

通过对26种干爽(导湿快干)涤纶织物透气性、透湿性能的测试分析,可以看出:影响织物透气性的主要因素是纱线的组成和织物的紧度。纯涤纶织物,不论其截面形状如何,透气性都差,涤、棉交织物中,涤纶含量越高,透气性越差;纱线越粗,织物的经纬向密度越大,织物的紧度越大,透气性越差;织物的透湿性能与组成纱线纤维的种类,纱线的粗细及经纬纱的密度有关。棉的含量越高,透湿性越好,五叶涤纶丝Coolfibre(CF)与棉交织的织物的透湿能力要优于涤纶DTY与棉交织的织物。     

影响网格状稀疏织物结构稳定性的因素分析

探讨影响网格状稀疏织物结构稳定性的因素。通过测试不同组织、不同纱线号数和不同经纬密的多种机织网格状稀疏织物的滑移阻力,并反复对比分析了组织、纱线号数、摩擦因数和经纬密对网格状稀疏织物滑移阻力的影响。结果表明:平纹组织织物的滑移阻力明显大于方平组织织物;在一定范围内,织物的滑移阻力随纱线号数和摩擦因数的增大而增大,随经纬密度的增大而增大。认为网格状稀疏织物的滑移阻力测试分析结果为建立织物滑移阻力预测模型提供了依据。     

薄型精纺毛织物透气性与织物结构参数的关系

采用Y561织物透气量仪对14种不同结构参数的精纺薄型毛织物进行透气性实验,并借助应用软件对实验数据进行分析.研究结果表明:薄型精纺毛织物的透气性不仅与纱线原料的吸湿性,经纬纱捻度、线密度有关,还与织物组织、经纬密有很大的关系,但薄型毛织物的厚度对透气性影响较小.     

纯棉织物的透气性能测试分析

以纯棉纱线为原料,设计了平纹、斜纹、缎纹、经重平及蜂巢五种不同组织、密度的织物,并通过全自动剑杆打样机织成25块不同织物样品;分别对这些样品进行透气性能测试和分析,以探析织物的组织、密度与其透气性能的关系。     

玻璃纤维织物结构参数对隔声性能的影响

为研究玻璃纤维织物的隔声性能,选择EW100、EW200和EW300 3种不同经纬密度、线密度和层数的玻璃纤维平纹织物,采用混响室一消声室法对织物的隔声性能进行测试,比较分析织物面密度、厚度、透气性、纱线单丝根数等参数对隔声性能的影响.结果表明:随织物面密度、厚度、纱线单丝根数的增加和透气性的减少,其隔声效果增强;玻纤织物对声波高频段的隔声好于中低频段的隔声;玻纤织物的隔声性能不但与织物的面密度有关,还与织物的透气性有关;在透气性较好时,其隔声量对织物的面密度具有一定的加和性,而在透气性较差时,其材料内部对声波的吸收所产生的隔声量贡献远大于面密度的贡献.     

玻璃纤维织物结构参数对隔声性能的影响

 为研究玻璃纤维织物的隔声性能,选择EW100、EW200和EW300 3种不同经纬密度、线密度和层数的玻璃纤维平纹织物,采用混响室－消声室法对织物的隔声性能进行测试,比较分析织物面密度、厚度、透气性、纱线单丝根数等参数对隔声性能的影响。结果表明：随织物面密度、厚度、纱线单丝根数的增加和透气性的减少,其隔声效果增强;玻纤织物对声波高频段的隔声好于中低频段的隔声;玻纤织物的隔声性能不但与织物的面密度有关,还与织物的透气性有关;在透气性较好时,其隔声量对织物的面密度具有一定的加和性,而在透气性较差时,其材料内部对声波的吸收所产生的隔声量贡献远大于面密度的贡献。     

EFFECTS OF TYPES AND LEVELS OF FAT AND RATES AND TEMPERATURES OF COMMINUTION ON THE PROCESSING AND CHARACTERISTICS OF FRANKFURTERS

ABSTRACT— Frankfurter emulsions containing either 25% or 35% beef fat, pork fat, or cottonseed oil were prepared by comminuting at 1500, 2500, or 5000 rpm to temperatures ranging from 45°–85°F. Data were obtained on the viscosities of the emulsions; except for initially high viscosities for which unmelted fat was responsible, the viscosities of emulsions containing the fats, or oil, were similar: viscosities tended to decrease with increasing time and temperature of chopping. The frankfurters were stuffed, smoked, and cooked, and data were obtained on shrinkage, fat retention, ease of peeling, specific gravity, and texture. Shrinkage was inversely related to content of fat. Fat separation mainly occurred in processing frankfurters containing beef fat; the data suggest that emulsions containing beef fat should be comminuted to 65°–75°F to avoid possible under or overchopping: the results show that optimum conditions were time as well as temperature dependent. The air content of frankfurters varied inversely with the maximum temperature attained during communition. Frankfurter skin strength was lessened on increasing the temperatures to which emulsions were communited; elasticity, the equivalent of rubberiness, decreased under these conditions.     

SYNTHESIS AND CHARACTERISATION OF DIMERS OF CATECHIN AND EPICATECHIN

A method of synthesis of ‘dimers’ of catechin and epicatechin is described which gives 50% yields of the pure substances. The structures of the products are confirmed by nuclear magnetic resonance using ¹H and ¹³C resonances and by mass spectrometry. Mass spectrometry using laser impact with (+) ions allows a rapid distinction to be made between the ‘dimers’ derived from catechin or epicatechin.     

高粱营养价值及资源的开发利用

综述了高粱的营养特点和开发利用状况，并对前景进行了讨论，提出了需要解决的问题。     

EFFECT OF RELATIVE HUMIDITY, TEMPERATURE AND LENGTH OF STORAGE ON DECAY AND QUALITY OF POTATOES AND ONIONS

Long term storage tests at 0–10°C indicated that for potatoes the optimum relative humidity was 98–100%, whereas for onions a lower humidity was required. For potatoes, the high relative humidity minimized moisture loss, generally reduced decay and maintained firmness and a thin skin. While onions stored at 98–100% RH were firmer and juicier than those held at 75–95% RH, decay was generally greater and the surface layers were not as light and crisp. Sample size (from 1 bu to 11/2 tons) did not affect results. With the larger samples, a study of temperature, relative humidity and air movement in the stored produce was also made.     

天然石材染色印花理论及工艺研究

通过电镜观察发现，石材中不存在明显的缝隙．利用有机染料熔融染色可得到色谱齐全、色泽艳丽的染色试样，适用于室内装修，无机盐熔融染色的试样适用于室外装修．另外，利用有机染料熔融法对石材泼染、手绘和防染以提高装修的艺术效果．     

纸张拉毛速度与油墨粘度、粘着度关系的分析

文献中一般认为,纸张拉毛速度和油墨的粘度、粘着度呈线性关系。本文在较精密的实验基础上,利用一元非线性回归分析的方法,得出纸张拉毛速度和油墨粘度、粘着度呈非线性关系的结论。