水性胶黏剂的应用及研究进展

综述了水性胶黏剂的发展前景、应用情况及技术和研究的进展。世界各国都很重视环保型胶黏剂的发展,在一些发达国家,水性胶黏剂的发展一直呈上升趋势,差不多占到胶黏剂总用量的50％。一些高性能的水性胶黏剂-如丙烯酸酯类、聚氨酯类、环氧类等,在很多场合已经能够完全代替溶剂型胶黏剂。在建筑、包装、运输、胶带等领域,水性胶黏剂得到了广泛的应用。随着对环保问题的日益重视,胶黏剂从溶剂型向水基型（或热熔型）的转变已成为必然。     

锂离子电池正极水性胶黏剂研究进展

探讨了锂离子电池正极水性胶黏剂的研究背景,介绍了当前国内外研究人员在水性胶黏剂方面的研究进展,总结了不同水性胶黏剂对锂离子电池电化学性能的影响,并预测了锂离子电池正极胶黏剂的发展前景。     

水性聚氨酯胶黏剂发展概况

简述可水分散性多异氰酸酯胶黏剂、乙烯基聚氨酯水性胶黏剂和水分散性聚氨酯(PUD)胶黏剂等水性聚氨酯胶黏剂国内外应用和技术发展状况,对我国水性聚氨酯胶黏剂的发展提出初步看法和建议。     

拜耳新一代水性胶黏剂亮相

<正>日前,在上海举办的中国国际胶黏剂及密封剂展览会上,拜耳材料科技集中展示了最新研发的胶黏剂产品,其中新一代水性胶黏剂在汽车和鞋类的应用成为两大亮点。拜耳汽车内饰用新一代水性聚氨酯胶黏剂广泛应用于门板、立柱、仪表盘、座椅及顶盖等。新产品完全不含VOC,能显著改善车厢内空气质量;胶黏剂活化温度     

论表面活性剂水溶液的最低表面张力

<正> 表面活性剂在生产、生活、科学技术各个领域中有着广泛而重要的应用。这是其他任何一类有机化合物所不能及的。它的许多重要应用都来自它能降低液体表面张力这一特性。而水是最重要的液体,故表面活性剂水溶液所能达到的最低表面张力是它的表面活性高或低的一种度量。那么,什么样的表面活性剂能使水表面张力降低最多?哪些因素影响表面活性剂水溶液的最低表面张力?这些都是既有理论意义又有实用价值的问题。表面活性剂水溶液所能达到的最低表面张力通常以临界胶团浓度(cmc)时的表面张     

表面活性剂在石油工业中的应用

本文介绍了应用于石油工业中的表面活性剂,它们大多数是多种表面活性剂与溶剂的混合物,根据其不同的性质,表面活性剂可用做油田的酸液缓速剂、稠化剂、悬浮剂、防堵剂、粘土处理剂、表面张力降低剂等。     

混合表面活性剂的表面活性与链长相关性

研究了一系列疏水链长度不同的混合表面活性剂的表面活性。总结了表面活性参数随表面活性剂疏水基链长变化的规律。混合表面活性剂形成胶团的能力和降低表面张力的效率主要取决于两表面活性剂的碳原子数,而降低水表面张力的能力则受总碳原子数影响不大。固定总碳原子数时,两表面活性剂链长相差越大临界胶团浓度越小,降低表面张力的效率越高,而降低表面张力的能力却反而越差。     

三分钟看懂国内胶黏剂市场概况

<正>什么是胶黏剂1.胶黏剂的定义从广义上说,可以把一切有粘附性的物质划入胶黏剂的范畴。凡能把同种的或不同种的固体材料表面连接在一起的媒介统称胶黏剂,又称粘合剂。通过胶黏剂粘接力使固体表面连接的方法叫粘结或胶接,被粘合的固体材料称被粘物。2.胶黏剂的分类胶黏剂的品种较多,组成不一,有简单、又复杂,但粘料是胶黏剂的主要组分,再配合一种或多种的其他组分。     

我国环保胶黏剂的现状及发展趋势

阐述了环保型胶黏剂将成为胶黏剂市场的主旋律。从使用环境、居住环境、地球环境及资源几个方面论述了发展环保型胶黏剂的目的意义，介绍了目前市场上最常用的三类环保型胶黏剂即热熔型胶黏剂、无溶剂型胶黏剂、水基型胶黏剂的现状，并对水基胶黏剂的种类及应用情况作以详细说明。在建筑、包装、运输等领域，水性胶黏剂得到了广泛的应用。随着人们对环保问题的日益重视，胶黏剂从溶剂型向环保型的转变已成为必然。     

动态表面张力的测定及应用研究综述

表面张力是表征溶液性质的重要物理参数,添加不同类型的表面活性剂,降低表面张力的状态也会不同,其中,动态表面张力的测定能表征表面活性剂分子在溶液内部及表面的运动特性,通过测定动态表面张力,既能表征溶液表面张力降低速率的快慢,也能体现表面活性剂分子在气-液两相吸附的差异。介绍动态表面张力的常用测定方法,归纳各种测定方法的适用范围,综述国内外动态表面张力测定在各领域的应用研究成果及价值。     

Synthesis and Surface Activity of Bisphosphate Gemini Surfactants

Anionic bisphosphodiester gemini surfactants with two different spacer moieties and varying alkyl chain lengths were synthesized and investigated for their surface active properties. The equilibrium and dynamic surface tension studies were carried out using the Wilhelmy plate technique and maximum bubble pressure method respectively. It was found that these gemini surfactants possess lower critical micellar concentration values, and reduce the surface tension to a greater extent in comparison with the conventional analogues. The efficiency of the synthesized gemini surfactants was also evaluated. The results of surface activities obtained were correlated with the structures of gemini surfactants. The dynamic surface tension measurements showed that the geminis with long chains adsorb very slowly at the air/water interface within the time span of measurements. These gemini surfactants showed low foamability.     

Fluorine-containing compounds improving adhesion of epoxy oligomers to materials with low surface energy

Results of studying adhesive properties of epoxy resins modified with surfactants are reported. It is shown that surfactants with terminal fluorinated fragments have the highest activity. Ethers of a fluorine-containing telomeric alcohol and glycidol are employed as the surfactants. The surface tension is measured by the Rehbinder maximum bubble pressure method. The results of measuring surface tension and contact angles are presented. It is established that the use of organofluorine compounds with reactive groups makes it possible not only to decrease the surface tension, but also to “fix” molecules of these compounds at interfaces in the course of curing.     

水基环氧胶粘剂的制备及应用

介绍合成反应性乳化剂的技术路线、制备水基环氧树脂乳液的方法及水基环氧胶粘剂配方和应用方面的新进展。     

Application of Ammonium α-Allyl Alkyl Phenol Polyoxyethylene Ether Sulfonate in Acrylic Emulsion Pressure-Sensitive Adhesive

Three acrylic pressure-sensitive adhesives with same composition but emulsified by different surfactants were prepared. The test results showed that adhesion properties and water resistance of the adhesives emulsified by polymerizable surfactant were better than those of conventional ones. In addition, surface tension and contact angle of adhesive based on polymerizable surfactant were higher than the conventional ones. These differences were attributed to the different migration abilities of the surfactants, as explained with atomic force microscopy images. Furthermore, the storage modulus of the adhesive can be enhanced by the reaction of polymerizable surfactant, which was conformed by dynamic mechanic analysis.     

Syntheses and properties of surfactants containing organometals: IV. Organo silicone

The authors synthesized nonionic surfactants containing dimethylpolysilane, dimethylpolysilmethylene and dimethylopolysiloxane as the hydrophobic groups, and investigated their surface activities. In their ability to lower the aqueous surface tension, the polysiloxane surfactants were the most active, and there is little reason to choose between the other two kinds of surfactants. With regard to the ability of lowering the interfacial tension between water and silicone oil, the polysilmethylene surfactants were most effective when the concentration of aqueous solution was below 0.5 wt %. Above this concentration, however, the polysiloxane surfactants were superior. Also investigated was the lowering of surface tension of nonaqueous polyols and their ability to wet low energy hydrophobic surfaces such as polyethylene.     

水性聚氨酯胶粘剂在皮革工业中的应用

介绍了国内外皮革用水性聚氨酯胶粘剂（WPU胶）的发展状况;详细讨论了WPu胶在皮革上的应用;介绍了其应用所遇到的问题和解决方法,以及未来发展方向．     

表面张力变化对含气泡液体射流破裂的影响

使用高速相机研究了表面张力变化对含气泡液体射流破裂过程的影响。通过改变表面活性剂浓度获得了不同表面张力的液体射流。实验发现当液体射流速度保持不变时,减小液体表面张力会增加射流破裂长度。表面活性剂一方面降低了液体动态表面张力,减小了射流表面不稳定波的增长率,增大了射流破裂长度;另一方面表面活性剂在射流表面的非均匀分布会产生Marangoni应力,促使液体向射流变形区运动,从而推迟了射流破裂的发生,增大了射流破裂长度。通过理论分析得到了液体射流破裂长度表达式。发现射流内部气泡会显著缩短含表面活性剂射流的破裂长度。通过气泡扰动射流速度和吸附表面活性剂的分析,揭示了内部气泡对含表面活性剂射流破裂的影响规律。     

Equilibrium and Dynamic Surface Properties of Sulfosuccinate Surfactants

The equilibrium and dynamic surface tension of three sulfosuccinate surfactants at the air/aqueous solution interface were investigated. Wilhelmy plate method was used to determine critical micelle concentration (CMC) and the equilibrium surface tension (γ _eq). The dynamic surface tensions in the range 10–100 s were measured by maximum bubble pressure method. The well-known Ward–Tordai equation was employed to analyze the adsorption of the sulfosuccinate surfactants. The parameters and effective diffusion coefficients (D _eff) of dynamic surface tension have been calculated and analyzed. The equilibrium surface tension results showed that disodium laureth (3) sulfosuccinate (AEO₃-SS), disodium laureth (6) sulfosuccinate (AEO₆-SS) and disodium alkyl ethoxy glucoside sulfosuccinate (AEG-SS) are surfactants possessing strong surface activity, adsorbing to the interface rapidly and their γ _eq values were in the range 25–32 mN/m. CMC of the three surfactants increases with the number of hydrophilic groups and AEO₃-SS has the lowest CMC. According to the values of some dynamic surface tension parameters, AEG-SS is the most hydrophilic surfactant of them and AEO₃-SS is energetically more favorable to adsorb to the interface than the others. According to Ward–Tordai equation, the D _eff values were calculated, the adsorption mechanism was diffusion controlled at short times and toward the end good evidence was found for an activated-diffusion mechanism with an energy barrier.     

羟基和酯基型Gemini双季铵盐表面活性剂在煤沥青表面的润湿特性

以自制的羟基和酯基型Gemini双季铵盐表面活性剂为研究对象,在考察其表面活性的基础上,进一步研究了表面活性剂在煤沥青表面的润湿性。研究表明,羟基型Gemini表面活性剂在煤沥青表面的接触角随疏水链长度的增长呈先减小后增大趋势,其中C₁₂-OH在煤沥青表面的润湿效果最好;对于m-n-m酯基型Gemini表面活性剂而言,接触角随疏水链长度的增长而降低。当疏水链长度一定时,m-6-m在煤沥青表面的润湿效果比m-2-m好。在一定浓度范围内,C₁₀-OH、C₁₂-OH和12-2-123种Gemini表面活性剂的表面张力与其在煤沥青表面黏附张力呈线性关系。煤沥青表面的Zeta电位随Gemini表面活性剂浓度的增大呈先增大后趋于平稳的趋势。     

Synthesis and performance of surfactants based on epoxidized methyl oleate and glycerol

A small series of surfactants based on methyl oleate and glyceroe was synthesized. The synthesis utilizes an epoxidation reaction of methyl oleate followed by a simple esterification. The resultant products have between two and seven glyceride units, and their performance properties, including aqueous surface tensions and dynamic aqueous surface tensions, were studied. The droplet size of soybean oil/water emulsions made with each surfactant was also studied. The surfactants show properties similar to alcohol ethoxylates, such as the reduction of aquous surface tension to ∼34 mN m⁻¹. Additionally, because the synthesis leaves the epoxide functionality in the surfactant, further modification for performance optimization is possible.