荧光增白剂对洗衣液国标去污力及循环洗涤性能测试的影响

在标准洗衣液中添加不同种类和用量的荧光增白剂,根据GB/T 13174-2008进行国标去污力和循环洗涤性能测试。结果表明,若测试光源中包含紫外光,添加荧光增白剂的标准洗衣液的去污力和循环洗涤性能测试结果明显好于标准洗衣液,且荧光增白剂添加量增大,去污值和白度保持值增大;若测试光源中不包含紫外光,两者的去污力和循环洗涤性能测试结果并无明显差异。可见,荧光增白剂没有去污作用和抗污垢再沉积作用,但会显著提高国标去污力和循环洗涤性能的测试值。若要更加合理评价产品去污力,有必要按照GB/T 13174-2008进行洗涤,采用色度仪在不包含紫外光(滤除400 nm以下光源)的光源下测试,或者在含紫外光的正常光源下测试,但使用含有荧光增白剂的标准洗衣液作为参比。同时,GB/T 13174-2008未对白度计型号作出统一规定,使用不同规格的白度计测量添加荧光增白剂的洗涤剂产品时,将有不同的去污力和循环洗涤性能测试结果,建议尽快完善该标准。     

洗衣粉及去污力测试方法修订和《果蔬清洗剂》国家标准制定研讨会召开

为执行国家标准化管理委员会关于国家标准制定、修订计划的最新安排,全国表面活性剂和洗涤用品标准化技术委员会秘啪处于2008年3月19日在太原召开了关于GB／T13171-2004《洗农粉》、GB／T13174-2003《衣料用洗涤剂去污力及抗污渍再沉积能力的测定》和GB／T15815-1995《衣料洗涤剂性能比较试验循环洗涤白棉对照布法》3项国家标准的修订起草,     

中国日化院装备与设计研究部

<正>装备与设计研究部直属中国日用化学工业研究院,具备人才、技术、专利三大优势,拥有日用化工行业和高标准尾气处理领域的优势资源,竭诚为您提供工程咨询、工程设计及总包、自动化控制解决方案、成套设备的开发生产、标准检测仪器生产等专业化服务。标准检测仪器●RHLQ型多功能立式去污测定机符合国标GB/T13174-2008《衣料用洗涤剂去污力及循环洗涤性能的测定》     

洗涤剂性能测试标准修订研讨会

2013年4月25日,GB/T13174《衣料用洗涤剂去污力及循环洗涤性能的测定》和GB/T26398《洗涤剂耗水量及节水性能评估指南》两项国家标准的修订起草研讨会在中国日化院召开。会议由全国表面活性剂和洗涤用品标准化技     

污垢组成、布基、去污条件对去污力评价的影响

介绍了在Ｌａｕｎｄｅｒ－Ｏｍｅｔｅｒ去污机中“Ⅲ类”浓缩粉和标准粉对人工皮脂污布和标准污布的去污力,讨论了污垢组成,基质和洗涤条件对去污力的影响,进一步,将此种去污力与实际污布在洗衣机中的去污力进行了比较。结果表明,人工皮脂污布在Ｌａｕｎｄｅｒ－Ｏｍｅｔｅｒ去污机中的洗洒结果更换近实际污布在洗衣机中的洗涤结果。     

诺维信酶制剂在无磷洗衣粉中的应用研究(Ⅰ)

研究考察了3种诺维信洗涤用酶制剂(Sav4.0T,Sav/Term4.8/12T,Sav/Term/Cell7.2/24/0.14T)对4种市售无磷洗衣粉(A ,B ,C ,D)和一种皂粉(E)去污力性能影响的一些实验及讨论。实验以试样对5种人工染污布的去污比值表征其初次去污力 ,以试样对5种人工染污布去污力的综合评价确定了诺维信3种酶制剂在无磷洗衣粉中的适用性及价值。而关于最新酶产品对无磷洗衣粉去污力的提高、抗再沉积性能的改善等作用将在续篇里做更详尽地讨论     

诺维信酶制剂在无磷洗衣粉中的应用研究（I）

研究考察了3种诺维信洗涤用酶制剂（Sav4.0T,Sav/Term4.8/12T,Sav/Term/Cell7.2/24/0.14T)对4种市场售无磷洗衣粉（A，B，C，D）和一种皂粉（E）去污力性能影响的一些实验及讨论。实验以试样对5种人工污染布的去污比值表征其初次去污力，以试样的5种人工污染布去污力的综合评价确定了诺维信3种酶制剂在无磷洗衣粉中的适用性及价值。而关于最新酶产品对无磷洗衣粉去污力的提高、抗再沉积性能的改善等作用将在续篇里做更详尽地讨论。     

诺维信酶制剂在无磷洗衣粉中的应用研究(工)

研究考察了3种诺维信洗涤用酶制剂(Sav 4.OT,Sav/Term 4.8/12T,Sav/Term/Cell 7.2/24/0.14T)对4种市售无磷洗衣粉(A,B,C,D)和一种皂粉(E)去污力性能影响的一些实验及讨论.实验以试样对5种人工染污布的去污比值表征其初次去污力,以试样对5种人工染污布去污力的综合评价确定了诺维信3种酶制剂在无磷洗衣粉中的适用性及价值.而关于最新酶产品对无磷洗衣粉去污力的提高、抗再沉积性能的改善等作用将在续篇里做更详尽地讨论.     

利用全规模洗涤方法对比评价几种国内外洗涤剂的去污性能

介绍了衣物洗涤剂的全规模洗涤评价方法,与立式去污机方法相比,全规模洗涤方法具有污布种类丰富、消费者相关性强的突出优点,能够比较真实地展现洗涤剂的综合去污性能。采用全规模洗涤方法对国内外洗涤剂的去污力性能进行了对比研究。结果显示,在本实验测试条件下,我国衣物洗涤剂样品的去污力性能同国外同类型产品样品相比存在较大差距,且国产洗衣液样品去污力低于国外洗衣粉样品。建议应用全规模洗涤方法进行洗涤剂配方的开发与评价,将有助于提高我国洗涤剂行业的整体技术水平。     

复合酶去污性能研究

研究了由碱性蛋白酶、淀粉酶、碱性纤维酶复配而成的复合酶在不同洗涤条件下对血 -奶 -碳素墨水 /棉污布的去污性能 ,得出了复合酶能很好发挥其去污性能的条件为 ,复合酶浓度 :2 0g/L洗液 ;水质pH :9～ 10 ;水质硬度 :0～ 1× 10 -3 ;洗涤温度 :2 0°C～ 60°C ;洗涤时间 :2 0min～ 3 0min     

黏土污布的制备及其去污性能研究

论述了人工污布中黏土污布的染制方法及其对洗涤剂性能评价的影响。结果表明，多种洗涤剂对此污布的去污力差异顺序：实验室去污机与家用洗衣机排列顺序基本相同，而且对不同浓度的同一种洗涤剂的去污评价结果在一定范围内能拉开距离，黏土污布可以作为洗涤剂配方筛选和洗涤剂产品性能评价时的一种可靠依据。     

Characterization of Phosphate-Free Detergent Powders Incorporated with Palm C16 Methyl Ester Sulfonate (C16MES) and Linear Alkyl Benzene Sulfonic Acid (LABSA)

Laboratory and pilot scale investigations were carried out on phosphate-free detergent (PFD) formulations comprising binary anionic surfactants of C16 palm methyl ester sulfonates (C16MES) and linear alkyl benzene sulfonic acid (LABSA) with the aim of maximizing the incorporation of C16MES into low density detergent powders without compromising the detergency and other significant properties. Initial laboratory experiments revealed that the detergent powder resulting from C16MES/LABSA with a 50:50 ratio and pH 7–8 has acceptable detergency stability over 1 week of accelerated ageing test at 50 °C and 85 % relative humidity. Subsequent experiments were carried out in a 5-kg/h-capacity pilot spray dryer using PFD formulations of C16MES/LABSA over the whole range of weight ratios under the same pH of 7–8. The concentration of the detergent slurry and cleaning performance (detergency, foaming ability and wetting power) of the resulting spray dried detergent powder (SDDP) were evaluated. C16MES/LABSA in a 40:60 ratio was selected as the ideal formulation based on its optimum detergent slurry concentration and comparable cleaning performance against the control formulation. Further environmental tests have confirmed that SDDP obtained from the ideal formulation is readily biodegradable (60 % in 13 days) and exhibits low eco-toxicity properties (LC₅₀ of 11.3 mg/L).     

织物洗涤剂去污力测定中改进蛋白污布的性能研究

通过改变现用蛋白污布的污液配方,制备了新的蛋白污布,并对其进行洗涤测试实验。实验结果表明,改进蛋白污布洗前白度值的标准偏差为0.28,小于现用蛋白污布的0.44;国标粉对其洗涤差值约是现用蛋白污布的2.5倍;改进蛋白污布的去污测试结果标准偏差为0.45,小于现用蛋白污布的0.96;在对多个实际样品的测试中,改进蛋白污布去污结果的波动程度小于现用蛋白污布;此外,蛋白酶的分档试验结果显示,改进蛋白污布对酶的分档更接近国外同类污布。     

洗衣液去污力测试应优化

洗涤剂类别不同,其配方也不同,从洗衣粉的配方成分入手,针对不同成分对去污力的贡献,得出了洗衣粉参比洗涤剂不应作为液体洗涤剂的参比洗涤剂,并由此提出了参比洗衣液的配方建议。     

一种浓缩洗衣液配方的初步研究

使用L_9(3~4)正交试验,初步研究了脂肪醇聚氧乙烯醚硫酸钠(AES)、十二烷基苯磺酸(LAS)、脂肪酸甲酯乙氧基化物(FMEE)及脂肪醇聚氧乙烯醚(AEO_7)等4种常用表面活性剂在浓缩洗衣液体系中的应用。通过对去污力和水溶性等性质的测试,优化出一种浓缩洗衣液的基础配方为12%AES、12%LAS、10%FMEE、10%AEO_7、3%乙醇,其他0.7%,去离子水补足。该配方不会出现凝胶现象且去污测试结果分别为1.22(JB01)、2.94(JB02)、1.45(JB03),溶解性评分为3分。     

利用橘皮精油制备“绿色”洗涤膏

橘皮精油的主要成分D-柠檬烯具有较强的去污能力、天然的芳香味及抑菌功效。本论文以去污力为考察指标,通过单因素实验研究了橘皮精油,十二烷基磺酸钠及三乙醇胺的配比,制备出一种去污力较强的“绿色”环保型洗涤膏。其最佳配比为：D-柠檬烯：5．0％,十二烷基磺酸钠：13．6％,乙醇：4．4％,三乙醇胺：29．0％,氯化钠：2．2％,蒸馏水：45．8％。并对含橘皮精油的洗涤膏、市售洗涤剂的洗涤去污效粜进行了比较研究。测试结果表明,所制备的含橘皮精油洗涤膏与市售洗涤剂沈涤效果相当（去污比值约为1）,且在洗涤树脂类污垢优于市售洗涤剂（去污比值为1．2）。     

洗涤剂用酶的复合效应研究

以国产碱性蛋白酶、脂肪酶和纤维素酶为对象，研究了3种酶共存时蛋白酶对脂肪酶和纤维素酶活力的影响。结果表明，在实际洗涤液浓度下蛋白酶对脂肪酶和纤维素酶的活力并无明显负面影响。研究了3种酶在各种复合状态下的去污性能及其协同作用，结果显示上述3种酶的任何2种酶复合时均具有一定的协同效应，尤其是蛋白酶与脂肪酶或纤维素酶复合能获得显的协同效应。蛋白酶与脂肪酶或纤维素酶复配能使去污力相对提高50％以上。采用响应面分析法对蛋白酶／脂肪酶／纤维素酶三元复合酶的协同效应进行了优化，获得了其回归方程和最优组成。     

A natural soil and mechanism of removal

Nitrogen compounds in natural soils are studied in relation to their effect on the soil removal mechanism in detergency. Nitrogen compounds in various forms and in fairly large amts are found in natural soils, and more than 24% of these nitrogen compounds are presumed to be high mol wt nitrogen compounds or proteins. These high mol wt nitrogen compounds which cannot be removed by water can be removed by the detergent action of sodium dodecyl benzene sulfonate (DBS). When the detergency of DBS was compared with nonyl phenol-polyoxyethylene adduct, the detergency for artificial soil cloths did not coincide with results obtained with naturally soiled cloths. These data suggest that some interaction between DBS and nitrogen compounds might have contributed to the detergent action. If proteins were added to the present artificial soil formulation, better correlation might be expected between artificial and natural soil detergency results in DBS evaluation.     

Application of statistical analysis to mixed soil detergency

In previous studies, statistical method using distribution of detergent power and that of resistance of soil against washing was applied to analyze detergency of oily soil and solid particle soil. In this paper, this method was applied to an analysis of detergency of mixed soil. Artificially soiled cloth prepared by aqueous dispersion method was used as a mixed soil sample. Four-time consecutive washing tests were conducted under the same washing condition in Terg-O-Tometer using two kinds of detergent solution and distilled water. Change of removal efficiencies due to repetitive washing was used to determine the two distributions. Result shows that detergent power can be expressed as cumulative distribution function. In washing simulation using the cumulative distribution functions, the predicted removal efficiencies corresponded with experimental values. Moreover, the effect of soil aging on distribution of soil resistance against washing was found to move the distribution curve toward high resistance. These results show that the method using two statistical distributions can be applied to the detergency of mixed soil.