不同护色剂对佛手瓜护色效果研究

分别采用柠檬酸、亚硫酸氢钠、半胱氨酸、植酸等护色剂对佛手瓜进行护色处理。以色差为评判标准,对不同护色剂的护色效果进行比较。运用正交试验方法,优化不同护色剂组合后的浓度及护色时间。结果表明:佛手瓜使用0.7%柠檬酸,0.10%亚硫酸氢钠,0.6%植酸混合溶液,浸泡处理60 min,护色效果最佳。     

洗涤剂中护色剂对织物护色效果的探讨

通过对比在一定洗涤条件下白布和色布的色度变化,研究了不同类型的护色剂在洗涤过程中的护色和防串色效果。结果表明：HP66加入量为0.3%时,可满足对白布的防串色效果;NaCl加入量为3%,对于色布的护色效果最佳。     

苦苣菜护绿保脆工艺研究

研究苦菜软包装加工和贮藏过程的护色和保脆技术。结果表明,在温度95℃漂烫3 min后,分别加入质量分数为0.06%Na_2SO_3、0.03%NaHCO_3、0.80%葡萄糖、0.015%乙酸锌和0.30%CaCl_2的护色液,常温浸泡4h护色效果最佳,加工出的苦菜色泽翠绿、无褐变、质地脆嫩、品质较好。     

苦苣菜护绿保脆工艺研究

研究苦菜软包装加工和贮藏过程的护色和保脆技术。结果表明,在温度95℃漂烫3 min后,分别加入质量分数为0.06%Na_2SO_3、0.03%NaHCO_3、0.80%葡萄糖、0.015%乙酸锌和0.30%CaCl_2的护色液,常温浸泡4h护色效果最佳,加工出的苦菜色泽翠绿、无褐变、质地脆嫩、品质较好。     

彩色水性聚氨酯制备超细纤维合成革贝斯

为解决超细纤维聚氨酯合成革染色中存在的问题,探讨了应用彩色水性聚氨酯(CWPU)浸渍超细纤维基布制备免染色合成革贝斯的可行性及工艺条件。分别考察了凝固液醋酸浓度、CWPU用量等因素对贝斯色差值(DE*)的影响。结果表明,DE*随醋酸浓度的升高及CWPU用量的增加而提高。当醋酸浓度为0.20 mol/L,CWPU用量为基布质量的30%时,所得贝斯色彩饱满、均匀。基布减重率为6%~12%时,贝斯正、反面的色差值(ΔE)最小。色牢度测试结果表明,所得贝斯具有较好的耐水洗色牢度,耐皂洗色牢度随后处理温度的升高而提高。     

有机酸及相关盐类在果蔬护色、防褐变中的应用研究

考察了不同浓度的曲酸、抗坏血酸、乳酸及ZnC l2、CaC l2、乳酸锌、乳酸钙处理苹果和梨的防褐变时间。结果表明,曲酸的护色效果最好。当曲酸浓度>0.1%时,防褐变效果很好,24 h时只有轻微褐变;当乳酸钙浓度>1.0%,抗坏血酸浓度>0.25%,ZnC l2浓度>0.75%,CaC l2浓度>1.0%时,防褐变效果均较好。     

会心一笑

理夕,忘乎研一以岁弓唱熬刃乡稼撇一尤》、/户护丫(帷滋我澡川今狱笋9户节立。毛e理夕,忘乎研一以岁弓唱熬刃乡稼撇一尤》、/户护丫(帷滋我澡川今狱笋9户节立。毛e理夕,忘乎研一以岁弓唱熬刃乡稼撇一尤》、/户护丫(帷滋我澡川今狱笋9户节立。毛e理夕,忘乎研一以岁弓唱熬刃乡稼撇一尤》、/户护丫(帷滋我澡川今狱笋9户节立。毛e理夕,忘乎研一以岁弓唱熬刃乡稼撇一尤》、/户护丫(帷滋我澡川今狱笋9户节立。毛e理夕,忘乎研一以岁弓唱熬刃乡稼撇一尤》、/户护丫(帷滋我澡川今狱笋9户节立。毛e理夕,忘乎研一以岁弓唱熬刃乡稼撇一尤》、/户护丫(帷…     

专利文摘

正一种液体织物洗涤剂组合物及提升其护色性能的方法专利申请号:CN201410763396.5公开号:CN104531406A申请日:2014.12.12公开(公告)日:201.5.04.22申请人:广州立白企业集团有限公司本发明公开了一种液体织物洗涤剂组合物及提升其护色性能的方法。所述组合物包含一种阳离子羟丙基氧化淀粉衍生物,阳离子取代度为0.20-1.00,聚合物数均相对分子质量为1 00万-400万。使用阳离子羟丙基氧化淀粉衍生物既可起到织物固色效果,又能够避免有色织物之间防串色现象的发生。更为重要的是,该类阳离子羟丙基氧化淀粉与阴离子表面活性剂和荧光增白剂相容     

非离子氟碳表面活性剂与重烷基苯磺酸钠复配驱油剂的研究

研究了氟碳intechem-01表面活性剂(FC-01)/重烷基苯磺酸钠(HABS)复配驱油体系的性能,以金属筛网洗油率和静态驱油率、界面张力、与注入水和模拟地层水的配伍性为考察指标。结果表明,复配体系的最佳配比为氟碳intechem-01表面活性剂浓度为0.08%,重烷基苯磺酸钠质量浓度为0.10%,碳酸钠质量浓度为0.20%,碳酸氢钠质量浓度为0.20%。复配体系与定边油田的原油形成较低界面张力,驱油率显著提高,且与定边油田采油注入水和模拟地层水有良好的配伍性。     

蒽酮-硫酸法测定地笋多糖含量的研究

采用蒽酮-硫酸法测定地笋多糖含量并对其测定条件进行研究。实验结果表明:使用蒽酮-硫酸试剂在430~800nm扫描地笋多糖的最大吸收波长为625nm,蒽酮试剂的最佳浓度为4g/L,最佳加热时间为8min,最佳显色时间4min,精密度实验RSD值为2.31%。平均回收率为92.99%,RSD为3.60%。     

喷涂聚脲技术在彩钢瓦屋面防护中的应用研究

介绍了喷涂聚脲材料在彩涂钢板屋面防护中的应用及其发展前景。阐述了聚脲技术在彩钢屋面防护中的特点和施工工艺。研究结果表明,聚脲涂层具有优异的性能,能够抵抗自然条件下的腐蚀破坏,对彩钢屋面起到很好的防护作用。     

天然藕丝的纤维特征

藕丝是一种天然纤维,扫描电镜显示其外型具有与藕的外型相同的节状特征,其单丝直径在微米尺寸范围内,平均强度约为1.3 cN,最大延伸率约为1.1%。DSC分析发现藕丝的玻璃化转变温度在43℃左右,而红外光谱则显示藕纤维主要含多糖物质。     

Effect of polydopamine deposition on wool fibers on the construction of melanin

The use of dopamine to synthesize melanin as a natural dye on fabrics has the disadvantages of complicated processing, long processing time, and high cost. This study simplifies the processing conditions of the oxidative polymerization of dopamine and develops wool fabric melanin coatings with different finishing effects by adjusting the reaction time. The results of computer color matching, ultraviolet (UV) protection properties, and color fastness indicated that the treated wool fibers were effectively dyed, and they achieved UV resistance properties comparable to those realized in other studies in a relatively short time. The degree of lightness (L) and UV protection factor of the treated fabric reached up to 13.3 and 80+, respectively. Samples W/PDA 60 and W/PDA 120 absorbed more than 95% of the UV light. The color fastness was greater than Grade 4. The Fourier infrared spectrum and X-ray diffraction studies revealed that the chemical and crystalline structures of the wool fiber did not change significantly after the treatment. The breaking strength of samples W/PDA 60 and W/PDA 120 was about 50% higher than that of the original wool fabric. This efficient and simple method provides a feasible and promising solution for the color deepening and UV finishing of high value-added wool products. It can be a potential choice for upgrading the printing and dyeing industries from the perspective of ecological protection.     

The origin of color in natural C center bearing diamonds

The properties of 152 natural diamonds with C centers – detectable by the absorptions at about 1344 and/or 2688 cm^− 1 in the infrared spectra – were analyzed in order to better understand their origin of color. While such diamonds are generally thought to be yellow, type Ib natural diamonds are usually not so, but mainly orange-yellow, orange, brown, ‘olive’ (a mixture of yellow with brown and/or gray with always a greenish component) and mixtures thereof. The only natural diamonds found to be of pure yellow coloration were – with very few exceptions – type IaA diamonds with a very minor Ib component, of cuboid–octahedral growth, often so-called re-entrant cubes. This was verified by the analysis of over 70,000 bright yellow and over 20,000 yellow-orange melee diamonds (i.e. diamonds weighing less than 0.20 cts) submitted for testing at the laboratory.In natural type Ib diamonds of octahedral growth the color is strongly influenced by vacancy-related defects that originate mainly from plastic deformation; natural type Ib diamonds of regular octahedral growth generally show distinct deformation-related strain and often some associated color zoning or ‘colored graining’ along octahedral planes. None of the nickel-rich, C-center-containing natural diamonds included in this study showed any specific Ni-related absorption band in the visible range spectrum that had an influence on color.The “olive” to brown color in type Ib diamonds was found to be caused by a combination of continuum absorption with increased absorbance from the NIR to about 480 nm plus distinct NV⁻ center absorption.     

离子交换树脂在ECP-2工艺加工药液回收处理中的运用

电影洗印厂大量的废水和废液的排放,会造成严重的环境污染。保护生态环境,是我们每个生活在这个地球上人的共同责任。为了解决这个问题,洗印厂将彩色显影液和停显液经过回收处理再循环使用,从废液中提取CD2的含量,这对环保和经济上都是有益的。本文从使用离子交换树脂的原理、阴离子交换树脂净化彩色显影液、阳离子交换树脂净化停显液、停显液里CD2含量的分析方法和离子交换树脂的运用作了较详细的叙述。     

Antioxidant Activity of Oat Malt Extracts in Accelerated Corn Oil Oxidation

Oat cultivar AC Vermont was malted to concentrate antioxidants, milled to fractionate only the endosperm portion and extracted with methanol to isolate the crude antioxidants. The oat malt antioxidant fraction was assessed as a natural antioxidant based upon enhancing the stability of corn oil against oxidation and compared to the synthetic antioxidant butylated hydroxytoluene (BHT). The induction time (time required for the formation of 10 meq hydroperoxide per kilogram corn oil thermally oxidized) was used to measure antioxidant activity of oat antioxidant or BHT. The protection factor achieved by crude oat malt antioxidant extract concentrate at 0.26% (2,600 μg/g) was comparable to BHT (75 μg/g). The antioxidant activity of the oat and barley malt extract concentrates was not significantly different. However, the extract concentrate of oat malt had 44% less color compared to that of barley malt at equal concentrations showing its potential as a natural food antioxidant.     

pH和Fe~(3+)对番薯紫色素稳定性的影响研究

研究了番薯紫色素稳定性及其变色反应机理,选择了辅色剂和护色剂来增加其显色效果和稳定性。结果表明,pH值和Fe3+是引起番薯紫色素变色和褪色的主要原因;EDTA-2Na有护色作用,Fe3+有辅色作用,两者协同作用能够增加其显色和稳定性,当两者浓度比为0.5∶1时,协同效果最好,增色率达到37%,转化率降低了32.2%。     

Removal of Dissolved Organic Carbon and Color from Dyeing Wastewater by Pre-Ozonation and Subsequent Biological Treatment Using Test-Scale Plant

The effects of pre-ozonation and subsequent biological treatment process on the decrease in dissolved organic carbon (DOC) and color were investigated in a test-scale plant of 5 m³/d capacity using actual raw wastewater (RW) from a dye works. Ozone dosage rate and contacting time were around 70 mg/L on average and 30 min, respectively. The DOC concentration was gradually decreased from 36.1 to 19.3 mg/L on average through the process and the DOC removal rates were 24.4% after ozonation and 46.5% after subsequent biological treatment. The average color value was rapidly decreased from 1.75 to 0.20 after ozonation, and the color removal rate was 88.6%. The values of adsorbable organic halide formation potential (AOXFP) and trihalomethane formation potential (THMFP) were gradually decreased by each treatment process, indicating the increased safety of the treated water. Slight morphological differences due to decomposition of the predominant bacteria by residual ozone were observed. The DOC removal rate brought about by pre-ozonation was slightly higher than that by the process consisted of biological treatment and post-ozonation, although no obvious difference in the color removal was observed between them.     

Describing natural colors with Munsell and NCS color systems

The Munsell Color System and the Natural Color System are widely used but they have some limitations due to the manufacturing process and sampling choices. To estimate quantitatively these limitations we compared the colors of natural scenes with the colors represented by these systems under a wide range of illuminants. Spectral data from the two systems and from natural scenes were used in the analysis. It was found that a considerable portion of natural colors are not accounted by these systems, mainly colors with low lightness levels. Under D65 the Munsell Color System color volume corresponds to 72% of the Natural Color System color volume which in turn represents only 53% of the natural scenes color volume. If individual colors are considered, less than half are contained within these systems. To obtain a complete match to the natural colors contained by the color systems thresholds of 7 and 5 CIELAB units would be required for Munsell Color System and Natural Color System, respectively. Variations with the illuminant are generally modest showing that both system work similarly across different illuminations. Although these Color Systems have limitations in describing low lightness colors they perform quite well for medium to high levels of lightness.     

护肤化妆笔

目前护肤功能彩妆品已成为化妆品行业发展的一个新亮点。但是国内外对护肤化妆笔的研究和报道较少。通过在配方中添加安全性高的Uvinul MC-80、Uvinul M40和纳米二氧化钛等优质防晒剂，以及维生素A、E等活性物质和天然活性成分，研制出了能有效地防御紫外线对皮肤的损伤、增强产品防皱纹、抗衰老和滋润保湿等护肤功能的新一代高档护肤系列化妆笔。