排序方式: 共有21条查询结果,搜索用时 15 毫秒
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摘要:采用2-磷基丁烷-1,2,4-三羧酸(PBTCA)与丁烷四羧酸(BTCA)复配体系对棉织物进行抗皱整理,探讨了PBTCA用量、BTCA用量、催化剂用量、焙烘温度、焙烘时间对抗皱整理效果的影响,并优化确定了PBTCA与BTCA复配体系用于棉织物防皱整理的工艺条件:PBTCA 120 g/L,BTCA 20 g/L,次亚磷酸钠50 g/L,三乙醇胺20g/L,180℃培烘120s.在此工艺条件下整理的棉织物,其折皱回复角可达260°,纬向断裂强力为231 N,白度为77.92. 相似文献
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Suspension and solution thermal spray coatings 总被引:3,自引:0,他引:3
Lech Pawlowski 《Surface & coatings technology》2009,203(19):2807-2829
The emerging methods of coating deposition by suspension and solution thermal spraying are described. The liquid suspensions of fine powders and liquid precursors are injected into flames and/or jets generated in the torches. The formulation and stability of suspensions as well as the methods of fine powders synthesis are briefly described. Typical solutions, being often the liquid organo-metallics are also briefly described. An important problem of injection of liquids into jets and flames is then presented. Two principal modes of injection, used at present, are outlined, i.e.: (i) atomization; and, (ii) injection of a continuous jet. Subsequently, the phenomena occurring in flames and plasma jets are discussed and the major differences to these occurring during conventional spraying are stressed up. The build up of coatings starting from the impact of fine particles on the substrate is described and typical microstructures of suspension and solution sprayed coatings are shown. Some properties of the sprayed coatings, including mechanical, electrical, chemical, and thermophysical ones are collected and presented. Finally, the emerging applications of coatings are shown and the possible future applications are discussed. 相似文献
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为改善纳米粉体的分散性,使其在高表面能态下稳定存在,以NaBH4液相还原Fe3+制备纳米级零价铁颗粒。对比采用不加入改性剂、加入改性剂2-膦酸丁烷-1,2,4-三羧酸(PBTCA)和改性剂TH-904,分别制备普通纳米级零价铁N-Fe0、改性纳米零价铁P-Fe0及T-Fe0。并对改性前后纳米零价铁进行X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、红外光谱(FTIR)及能谱(EDS)分析测试。结果表明,制备的N-Fe0、P-Fe0及T-Fe0颗粒平均粒径分别为125nm、73nm和64nm。改性后,由于颗粒粒径减小,引起产品部分氧化,但颗粒得到有效分散。FTIR测试表明,改性后产物中分别出现二种改性剂有效基团,表明改性剂对纳米零价铁有效分散起到了积极作用,并对该作用进行了分析。 相似文献
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高温冷却水系统中有机膦羧酸(PBTCA)缓蚀阻垢性能的研究 总被引:2,自引:0,他引:2
采用电偶腐蚀试验和静态阻垢试验 ,研究了高温 (85± 2℃ )冷却水系统中有机膦羧酸 (PBTCA)的缓蚀阻垢性能。试验结果表明 :PBTCA对铸铝 碳钢电偶腐蚀具有优良的缓蚀效果 ,而对铸铁 碳钢、焊锡 黄铜、黄铜 铜电偶腐蚀的缓蚀作用不大 ;PBTCA阻垢性能优良 ,浓度在 5mg/L时阻垢率就可达到 90 % 相似文献
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水处理药剂羟基乙叉二膦酸(HEDP)与2-膦酸基-1,2,4-三羧酸丁烷(PBTCA)的质量检验准中分析原理相同,分析方法相似,为了更有效地区分两者,根据它们总磷含量及阻垢性质的不同,以总磷分析及阻垢试验作为辅助检测手段。 相似文献