共查询到20条相似文献,搜索用时 109 毫秒
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北美三聚磷酸钠生产厂家共有6家(其中美国5家,加拿大1家),总生产能力为427500t/a。三聚磷酸钠的消费高峰在1969年,当时的市场需求为108万t,其主要用途是粉状洗涤剂的拼料。自1970年起,基于环保的要求,美国许多洲禁止使用含磷洗涤剂,迫使该项消费急剧下降。到1980年,由于液体洗涤剂开始取代粉状产品,更加速了三聚磷酸钠消费的下降。 相似文献
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本文对聚磷酸盐对硬水的软化能力和三聚磷酸钠(STPP)在液体洗涤剂中的作用进行了研究,结果表明,加入适量的STPP可显著提高液体洗涤剂的性能. 相似文献
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柠檬酸钠在洗涤剂中的应用及发展前景 总被引:14,自引:1,他引:13
本阐述了柠檬酸钠的性能特点,在洗涤剂中的应用,以及柠檬酸钠生产工艺的改进情况,指出柠檬酸钠可代替三聚磷酸钠(STPP)在洗涤剂中得到广泛的应用。 相似文献
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Algerian montmorillonite treated with sodium chloride was used as a substitute for the builders sodium tripolyphosphate (STPP)
and sodium sulfate in a detergent powder. The following performance parameters of the substituted composition powder were
examined: pH, foaming, cleaning, sequestering, and ion exchange capacities. The latter factors remained the most important
ones for effective detergency. Despite anticipated improvement in hard water ion removal, constant detergency results were
observed with the treated montmorillonite-containing powder. This level of efficacy does not meet the cost-effectiveness of
a standard detergent powder containing STPP. 相似文献
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柠檬酸钠在洗衣粉中的应用 总被引:1,自引:0,他引:1
本文研究了柠檬酸钠在洗衣粉中的应用。选用了三聚磷酸钠、4A沸石、纯碱、偏硅酸钠、聚丙烯酸钠五种助洗剂和柠檬酸钠进行复配,得到了含柠檬酸钠洗衣粉的最佳配方。 相似文献
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马来酐—丙烯酸共聚物钠盐的合成及助洗剂性能研究 总被引:4,自引:0,他引:4
以水为溶剂合成了马来酐-丙烯酸共聚物钠盐(简称内共聚物钠盐)对其螯合性能、分散性能及复配成洗衣粉的去污效果进行了研究。结果表明:马丙共聚物钠盐具有良好的螯合能力和分散能力,与4A沸石复配后得到的洗衣粉去污指数高于以STPP为助剂的标准粉。 相似文献
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Commercial detergent additives to control water hardness are of three main types, sequestrant, precipitant or ion-exchange
builders. These builders lower the free hardness ion (Ca+2, Mg+2) concentration in a wash system by different mechanisms. An electrometric experimental method was used to evaluate the relative
water hardness control performances of different builder-types under conditions closely simulating those of detergent’s end-use.
Experimental data for the following builders are presented: EDTA, NTA, STPP, PAA, CMOS, Na-Citrate, Na2CO3 and type A zeolite. It is shown that the relative rankings of the various builders in water hardness control differ significantly
with differences in use level concentration of the builder (0.005–0.100 gm per 100 ml). The application of the method to the
selection of optimum molecular weight range of the newly emerging class of organic polymeric detergent builders like sodium
polyacrylates (Na-PAA) (Mw=2000−220,000) also is discussed. 相似文献
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浅谈洗涤助剂的性能及作用机理 总被引:3,自引:0,他引:3
综述了洗涤助剂的开发进展,主要对三聚磷酸钠、4A沸石、层状结晶二硅酸钠、聚丙烯酸钠、丙烯酸和马来酸酐共聚物等助剂的性能及作用机理进行了探讨,为开发理想的无磷洗涤助剂提供了思路。 相似文献
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The behavior of linear alkylbenzene sulfonate in hard water has been studied by solubilization, transmittance and pH. Maximum
solubilization is reported at specific water hardnesses on the basis of the change in the micellar properties of the detergent.
The water hardness at maximum solubilization increases as the concentration of the detergent or of sodium tripolyphosphate
(STPP), sodium nitrilo triacetic acid (NTA) or sodium ethylene diamine tetra acetic acid (EDTA) increases, while it decreases
with an increase in the alkyl chain length of the detergent. A linear relationship between the detergent concentration and
the water hardness at maximum solubilization or transmittance was found. It seems that the effect of STPP, NTA and EDTA on
solubilization of anionic detergent was mainly due to water softening. 相似文献
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4 A沸石作为优良的替代STPP(三聚磷酸钠)的洗涤助剂得到广泛应用,其一般颗粒大小为1~4μm,占90%左右,密度为2.07g.cm-3。4A沸石对水中Ca2+、Mg2+等离子的交换,可去除98%钙离子、至少50%的镁离子,使水得到软化;对非离子表面活性剂的吸附,沸石是NTA(次氨基三乙酸盐)和碳酸钠的3倍,是STPP和硫酸钠的5倍;与其他电解质一样与表面活性剂有协同效应;4A沸石与STPP混合使用,其去污力至少可达到单一用STPP效果;并兼有防止不溶性污垢再沉积,安全、无污染等性能。并阐述了4A沸石在洗涤剂中的应用前景。 相似文献