Characteristic properties of cutting fluid additives derived from the derivatives of ricinoleic acid polymers

A number of esters were prepared from the reaction of acid chlorides with ricinoleic acid polymers and screened for anti-rust properties and antimicrobial activity in spent coolants of water-based cutting fluids. Aqueous solutions of triethanolamine salts with decanoic acid, undecanoic acid and oleic acid esters of ricinoleic acid dimer, trimer, tetramer and hexamer showed good anti-rust properties for water-based cutting fluids. Dehydrates of ricinoleic acid polymers also showed good anti-rust properties for water-based cutting fluids.     

Characteristic properties of cutting fluid additives derived from the reaction products of hydroxyl fatty acids with some acid anhydrides

Several adducts were prepared from the thermal reaction of hydroxyl fatty acids (ricinoleic acid oligomers, 12-hydroxystearic acid oligomers, oleyl alcohol, dehydrated castor oil fatty acids, and dimer acid) with maleic anhydride and screened as water-soluble cutting fluids. For example, aqueous solutions of triethanolamine salts with the products of ricinoleic acid oligomers, 12-hydroxystearic acid dimer, and 12-hydroxysteric acid hexamer showed good antirust properties for waterbased cutting fluids. Various half esters of hydroxyl fatty compounds with acid anhydrides were prepared. Aqueous solutions of triethanolamine salts of half esters of maleic anhydride and succinic anhydride and phthalic anhydride with hydroxyl fatty acids gave good antirust and antiwear properties for waterbased cutting fluids.     

Characteristic properties of cutting fluid additives derived from half esters of dimer acids

A number of half esters were prepared from the reaction of alcohols with dimer acids and screened for anti-rust properties and antimicrobial activity in spent coolants of water-based cutting fluids. Aqueous solutions of triethanolamine salts with lower-alcohol half esters of dimer acid showed good anti-rust properties for water-based cutting fluids.     

水性环氧防锈底漆的开发及性能研究

以水性环氧树脂乳液及水性环氧固化剂为主要成膜物质,氧化铁红与磷酸锌为防锈颜料,滑石粉和硫酸钡为填料,研制开发了一种性能优良的水性环氧防锈底漆。     

Characteristic properties of cutting fluid additives derived from the adducts of diamines and acid chlorides

A number of N,N′-diacylalkyldiamines were prepared from the reaction of acid chlorides with 1,8-diaminooctane and 1,12-diaminododecane and screened for anti-rust properties and antimicrobial activity in spent coolants of water-based cutting fluids. Aqueous solutions of N,N′-dihexanoyl-1,8-diaminooctane and N,N′-isobutyroyl-1,12-diaminododecane showed good anti-rust properties for water-based cutting fluids. Aqueous emulsions of N,N′-dibutyroyl-, dipentanoyl-, dihexanoyl- and dioctanoyl-1,12-diaminododecane showed good lubricities and antimicrobial activity for water-based cutting fluids.     

Epoxides of unsaturated fatty acids as anti-rust additives in water-based cutting fluids

Epoxides from a variety of unsaturated fatty acids were prepared, and corrosion tests for these products as water-based cutting fluid additives were performed. The triethanolamine salt of an epoxide of undecylenic acid showed very effective rust-inhibiting properties in a water-based cutting fluid.     

Characteristic properties of cutting fluid additives derived from fatty alcohols

Many 3-aminopropyl alkyl ethers were prepared and their characteristics as water-based cutting fluids were examined. 3-Aminopropyl octyl-, decyl- and dodecyl ethers showed good lubricities and antimicrobial properties for a water-based cutting fluid.     

New additives derived from fatty acids for water-based cutting fluids

A variety of derivatives from long chain fatty acids were prepared, and corrosion and lubricity tests for these products as water-based cutting fluid additives were carried out. We have found that triethanolamine salts of 11-(carboxymethylthio)-undecanoic acid (II), 10,11-dichloromethylene undecanoic acid (IV) and 12-isovaleroyloxy stearic acid (VI) showed effective rust-inhibiting and anti-wear properties for water-based cutting fluids.     

Preparation of water-soluble nanographite and its application in water-based cutting fluid

Water-soluble nanographite was prepared by in situ emulsion polymerization using methacrylate as polymeric monomer. The dispersion stability and dispersion state of graphite particles were evaluated by UV-visible spectrophotometry and scanning electron microscopy, respectively. The water-soluble nanographite was then added into the water-based cutting fluid as lubricant additive. The lubrication performance of water-based cutting fluid with the nanographite additive was studied on four-ball friction tester and surface tensiometer. Results indicate that the modification method of in situ emulsion polymerization realizes the uniform and stabilized dispersion of nanographite in aqueous environment. The optimal polymerization condition is 70°C (polymerization temperature) and 5 h (polymerization time). The addition of nanographite decreases the friction coefficient and wear scar diameter by 44% and 49%. Meanwhile, the maximum non-seizure load (P_B) increases from 784 to 883 N, and the value of surface tension (32.76 × 10⁻³ N/m) is at low level. Nanographite additive improves apparently the lubrication performance of water-based cutting fluid.     

Products from the reaction of fatty acids with ketones and their characteristic properties as cutting fluids additives

Hydroxy acids were synthesized in good yields from ketones and fatty acids by the use of lithium naphthalene in the presence of diethylamine. For example, from cyclohexanone and undecylenic acid (I), 2-(1-hydroxy-1-cyclohexyl)-10-undecenoic acid (III) was obtained in 92% yield. Hydroxy acids were treated withp-toluenesulphonic acid to give corresponding unsaturated fatty acids. From the reaction of (III), 2-(1-cyclohexenyl)-10-undecenoic acid (IV), a 3,4-unsaturated acid was obtained (yield 59%). Corrosion and lubricity tests for these products as water-based cutting fluid additives were carried out. We have found that triethanolamine salts of 2-cyclohexenyl and 2-hydroxycyclohexyl fatty acids showed effective rust-inhibiting and antiwear properties for water-based cutting fluids.     

水性防锈涂料用苯丙乳液的研究

研究了多元苯丙乳液体系的聚合方式、共聚单体、软／硬单体配比、阴／非离子乳化剂配比、乳化剂用量、引发剂用量和聚合温度对乳液性能的影响,确定了制备苯丙乳液的最佳工艺参数,由其配制性能优良的水性防锈涂料。     

Synthesis and Characterization of Water-Based Epoxy-Acrylate/Graphene Oxide Decorated with Fe3O4 Nanoparticles Coatings and Its Enhanced Anticorrosion Properties

ABSTRACT

In this article, water-based epoxy–acrylate (EP/AC) emulsion coatings and its nanocomposites with Fe₃O₄ nanoparticles, graphene oxide nanosheets and graphene oxide which was decorated with Fe₃O₄ nanoparticles were synthesized. This was executed by means of a pre-emulsion seeded semi-batch emulsion polymerization handle with a blend of conventional anionic surfactant (Polyalkylene glycol ether sulfate, ammonium salt-EXOSEL 20 S) and typical nonionic type emulsifier (Octylphenol polyoxyethylene ether OP-10) for emulsion polymerization (schematic 1). Prepared nanoparticles were investigated with different analyzing methods like FT-IR, XRD, SEM-EDAX and TGA. The impact of the distinctive nanostructures in an (EP/AC) resin, on coated steel panels with the features of corrosion conservation, was investigated by the test of electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization. Morphology of surface and thermal behavior of nanocomposite tests were executed using surface filtering electron microscopy (FE-SEM) and thermal gravimetric analysis (TGA). Different analyses resulted from nanostructures and nanocomposites approved very good dispersion of fillers in nanocomposite beads. Besides, they indicate the effective role of nanoparticles especially graphene oxide which was decorated with Fe₃O₄ nanoparticles in corrosion resistance of water-based EP/AC coatings and other properties of coated instances.     

Adducts of cyclic acid anhydrides and fatty amines as anti-rust additives in water-based cutting fluids

A variety ofN-alkyl carboxylic acid amides was prepared from the reaction of cyclic dicarboxylic acid anhydrides and various amines, and screened for anti-rust properties and antimicrobial activity in spent coolants of water-based cutting fluids. The triethanol amine salts of the adducts of maleic anhydride with octylamine, decylamine, dodecylamine and oleylamine, and the one of phthalic anhydride with octylamine showed both good anti-rust and antimicrobial activity.     

新型汽车防锈蜡的研制及性能研究

对乳化蜡的配方及乳化工艺条件进行了研究,当石蜡质量分数为10%～20%、氧化石蜡质量分数为3%,采用复合乳化剂硬脂酸与三乙醇胺（其质量比为5∶2,用量为7%）,在85℃、800～1000r/min的条件下乳化20～30min可制得稳定性高、分散性好的乳化蜡。以此乳化蜡为原料,采用复合防锈剂,当防锈剂A与防锈剂C质量比为3∶1、加入量为6%时,可制得pH值为8～8.5、氨味小、半透明的防锈蜡,其主要性能与国外先进同类产品指标接近。     

新型石蜡乳液添加剂的研制

研究了多用途石蜡乳液添加剂的制备方法以及各种最佳工艺条件的选择.结果表明,用复合表面活性剂制备出的石蜡乳液具有高度稳定、性能优良、成本低廉的特点,产品性能达到工业使用的要求.     

弹性乳液的合成及在水性油墨的应用研究

采用种子聚合工艺合成了弹性乳液,研究了乳液合成过程中功能单体用量、苯丙树脂液添加量、pH缓冲剂用量以及乳化剂的选择与用量对所配制的水性油墨性能的影响,对比了所合成弹性乳液与同类进口产品所配制水性油墨的性能。结果表明,功能单体占单体质量3％,苯丙树脂液占乳浇创竞量20％,pH缓冲剂占乳液总质量0.2％,反应型非离子一阴离子乳化剂复配使用时合成的弹性乳液配制的水性油墨性能最佳,可替代同类进口产品在水性油墨上的应用。     

紫外光固化碳纳米管改性水性聚氨酯涂膜

以异佛尔酮二异氰酸酯(IPDI)、聚乙二醇(PEG400)、2,2-双羟甲基丙酸(DMPA)和甲基丙烯酸-2-羟乙酯(HEMA)为主要原料,合成光固化水性聚氨酯丙烯酸酯预聚体,以三乙醇胺中和后,原位引入经浓硝酸处理过的碳纳米管(CNTs),制备了光固化水性聚氨酯碳纳米管复合乳液(WPU/CNTs),加入光引发剂后交联固...     

Half esters of dibasic acids as additives in water-based cutting fluids

Several half esters from long chain dibasic acids were prepared, and corrosion and lubricity tests for these products as water-based cutting fluid additives were made. Triethanolamine salts of half esters of sebacic acid and dodecanedioic acid showed effective rust-inhibiting and anti-wear properties for water-based cutting fluids.     

阳离子型水性聚氨酯乳液的合成

以聚酯多元醇、三羟甲基丙烷、甲苯二异氰酸酯和N-甲基二乙醇胺为主要原料合成了一种以水为介质的性能稳定的水性聚氨酯乳液,阐述了各种因素对产品物理性能的影响,获得了最佳配方.     

云南磷矿石中氧化钙含量测定方法的改进

用国标EDTA容量法检测磷矿石中氧化钙含量时,存在终点难以判定等问题,实验研究改用钙羧酸作指示剂,用三乙醇胺掩蔽铁、铝和少量锰,用糊精作保护剂抑制磷酸根和镁的干扰,同时采用KOH溶液调节试样溶液的pH值≥13,用EDTA标准溶液滴定,终点颜色变化敏锐,测定氧化钙的结果准确,方法可靠。