光固化粘合剂

简介了光固化粘合剂中紫外光固化粘合剂、电子束固化粘合剂的优缺点及光固化设备;举例介绍了光固化树脂的制备方法、光固化粘合剂配方及其应用。     

含氟光固化单体的研究进展

紫外光固化技术在光固化涂料、粘合剂、和油墨印刷等领域应用广泛。含氟聚合物表面能低,疏水疏油,具有优良的耐候性,耐化学品性和抗污染性,这些优异性能吸引人们研究其在光固化领域的应用。本文综述了含氟光固化单体的种类,具体包括丙烯酸酯类、环氧类、聚氨酯类、全氟乙烯基醚类、超支链低聚物和混合光固化体系类。并对其合成方法和优缺点进行了分析讨论。     

混杂光固化体系的原理及应用

混杂光固化或双重固化是指在同一体系中采用两种或两种以上不同类型的聚合反应来使体系固化的方法,它是原位改性高分子的一种新方法,混杂光固化体系包括自由基－阳离子混杂光固化体系,自由基－缩聚混杂体系和自由基－自由基混杂体系等,本文综述了混杂光固化体系的原理及其应用。     

星形超支化聚酯的合成及其光固化

星形超支化聚酯的合成及其光固化施文芳（中国科学技术大学应用化学系，合肥２３００２６）关键词星形聚合物，超支化聚酯，光固化，涂层紫外光固化具有快速反应、室温操作、低能消耗和无溶剂少污染等优点，现正以日益增长的速度应用于涂层和粘合剂等领域．然而，常规的线...     

UPR光固化粉末涂料研究进展

光固化粉末涂料是一种把粉末涂料与光固化涂料各自的优点相互结合的新兴涂料。光固化涂料相对其他粉末涂料可以在较低温度下固化，适合于木材、塑料等热敏性底材的涂装；加之光固化速度快，可以实现自动化流水线涂布，因此发展十分迅速，年增长速度保持12～15％。目前UV固化粉末涂料常用树脂有：环氧丙烯酸醋、丙烯酸树脂、不饱和聚醋、聚酯丙烯酸酯、聚醚丙烯酸酯。     

光固化材料及其应用

本文介绍了光固化材料的特点、分类、光引发剂及光固化材料的应用，内容主要涉及紫外光固化材料的国内外现状、最新发展，并讨论了固化材料未来的发展和环境保护问题对其产生的影响，文章最后例举了几个光固化材料的应用配方。     

光固化树脂基复合材料研究进展

介绍光固化反应的基本概念、光固化树脂基体的组成及光固化树脂基复合材料用增强材料的种类。阐述不饱和聚酯树脂、丙烯酸型树脂及混杂体系光固化材料的研究进展。指出对光固化树脂基复合材料用增强材料的基本要求。展望了光固化树脂基复合材料的发展前景。     

自蔓延光固化树脂及其碳纤维复合材料光固化行为

设计了自蔓延光固化树脂体系,并以此为基体制备了UV光固化碳纤维布增强的复合材料。研究了不同组成树脂的自蔓延光固化行为。结果表明,光引发剂和热引发剂相互配合使用可以实现环氧树脂的自蔓延光固化,其中热引发剂可以是自由基也可以是阳离子引发剂,阳离子引发剂比自由基引发剂更容易诱发自蔓延固化。以自蔓延光固化树脂为基体制备的碳纤维布增强的复合材料可以实现快速光固化,其固化过程是树脂的二维平面自蔓延过程。     

自由基-阳离子混杂光固化体系研究概况

混杂光固化是指在同一体系中采用2种或2种以上不同类型的聚合反应使体系固化的方法。混杂光固化体系中比较重要的是自由基-阳离子混杂光固化体系。本文介绍了自由基-阳离子混杂光固化体系的原理及发展概况。     

光固化涂料的技术优势和市场前景

1光固化（UV）技术 光固化技术是一种快速发展的“绿色”新技术，从上世纪70年代至今，辐射固化技术在发达国家的应用越来越普及。和传统涂料固化技术相比，辐射固化具有节能、无污染、高效、适用于热敏基材、性能优异、采用设备小等优点。     

FE simulation of the curing behavior of the epoxy adhesive Hysol EA-9321

Cold-curing adhesives, characterized by an unsteady curing degree, present various advantages for assembling large scale structures set up under outdoor conditions. Thus various applications can be found in aerospace and automotive industries where structures are affected by thermal and mechanical loads. Hence, the curing state of the adhesive must be known to evaluate the lifetime of such bonded structures. The evolution of the polymerization of the adhesive Hysol EA-9321 during the curing process was examined in this paper. To that end, the curing degree of the adhesive was experimentally and analytically investigated for different curing cycles with a view to a potential application in the aerospace domain, where structures are assembled at low temperatures. Existing dynamic and isothermal curing models were applied to simulate the curing behavior of the adhesive. Then, an FEM model was developed to simulate the process of adhesive curing by taking into account a thermo-kinetic coupling.     

粘接制动蹄用耐高温胶粘剂及其粘接性

介绍一种新型酚醛－－丁腈并用耐高温高强度单组分浆状结构胶粘剂和组成比例以及固化条件对粘接强度的影响，该胶适用于粘接刹车制动蹄和飞机轻金属结构等。     

Morphology evolution and associated curing kinetics in reactive blends

Morphology evolution and associated curing kinetics of reactive ternary blends have been investigated using spectroscopic, microscopic, and thermal methods. These blends, used to model one-part adhesive, usually incorporate functionalized amorphous polyethers, functionalized crystallizable polyesters and relatively immobile polyacrylates. As expected, the formation of morphological features can be manipulated by altering both blend composition and thermal history. In our case, the functional groups are isocyanates. Therefore, the curing mechanism of these functionalized polymers is the reaction of isocyanate with ambient water. As expected, the reaction kinetics in these blends is strongly dependent on the morphological features such as size of phase-separated domains, the degree of polyester crystallinity and the crystallite size. Our study has also revealed that the overall curing rates of these reactive ternary blends are dominated by the amorphous mobile polyether component.     

紫外光固化双马来酰亚胺树脂的制备及性能

以4,4'-二氨基二苯醚(ODA)、3,3'-二羟基联苯胺(P-HAB)、[4,4'-(4,4'-异亚丙基二苯氧基)双(邻苯二甲酸酐)](BPADA)、马来酸酐(MA)、丙烯酰氯等,合成了一种新型紫外光固化双马来酰亚胺(BMI);以BMI为预聚物,4-丙烯酰吗啉(AMP)为稀释剂,1-羟基环己基苯基甲酮(Irgacur...     

Effects of adhesive modulus and curing conditions on curing behavior of silicate based ceramic coatings on carbon fiber reinforced resin matrix composites

Sodium silicate based ceramic coatings were prepared on the surface of carbon fiber reinforced epoxy resin matrix composite. The coatings were obtained by curing the mixture of silicate adhesive, SiO₂ or Na₂SiF₆ as curing agent, and YSZ and Al₂O₃ as filler. The effects of adhesive modulus, curing agent, curing temperature and time on curing behavior of the coatings were investigated. The results indicated that the coating obtained from 2.7 modulus of silicate adhesive was dense, cohesiveness, uniform and continuous. As curing agent, SiO₂ could promote curing better than Na₂SiF₆, achieving complete curing of the coating. And the coating containing SiO₂ as curing agent was dense, flat and well adhered to the substrate. The curing behavior of coatings was significantly affected by curing temperature and time. The coatings could be cured completely with the increase of curing temperature. The best curing result was obtained at 100 °C curing temperature. Also the experimental results showed that the characteristics of coatings were improved to a certain extent by prolonging the curing time.     

光固化聚氨酯甲基丙烯酸树脂胶的研究

通过甲基丙烯酸与过量的异氰酸酯反应，制得聚氨酸甲基丙烯酸树脂胶粘剂。它可以用于光固化，得到的固化物具有优良的力学性能和贮存稳定性。研究了某些因素对合成过程和固化性能的影响。     

Characterization of canola oil based polyurethane wood adhesives

A novel bio-based poly (ether ester) polyol containing both primary and secondary functional groups was synthesized from canola oil using a low cost and efficient procedure. In this work, use of the new canola oil derived polyol for the production of polyurethane (PU) adhesives was demonstrated. The canola oil based PU adhesives had similar or better adhesive properties in terms of lap shear strength than three commercial PU adhesives. The effect of NCO/OH ratio and temperature on adhesive characteristics on wood bonding was also evaluated by lap shear tests. It was found that the use of an elevated curing temperature (i.e. 100 °C), as well as optimized NCO/OH molar ratio (higher than 1.5/1.0), improved the wood adhesive properties. The overall chemical resistance of bio-based PU adhesives to cold water, acid and alkali was comparable to that of commercial PU adhesives whilst its resistance to hot water was superior.     

Effect of Curing Pressure on the Strength of Adhesively Bonded Joints

It is important to be able to predict the mechanical response of adhesively bonded joints. To succeed in this, the accurate simulation of the behavior of adhesively bonded joints is an essential requirement because of the strain rate, temperature, and hydrostatic sensitivity of adhesive properties, which should be taken into consideration when developing a material model [1-111, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]. On the other hand, the load capabilities of adhesively bonded joints are affected by both applied pressure and temperature during cure. For this reason, in this study, the tensile load capabilities of single lap joints (SLJs) bonded with a flexible adhesive that possesses pressure-sensitive properties were experimentally investigated with respect to the applied pressure during the curing operation, and the experimental results were compared with finite element analysis (FEA) results. Finally, in addition to other parameters, such as the dependence on strain rate and the lack of yield criteria of adhesives, it was seen that the residual thermal stresses that occurred as a result of the applied pressure during the curing process at elevated temperature need to be taken into consideration to accurately simulate the mechanical behavior of adhesively bonded joints.     

脂环族环氧化物的合成与应用(1)──脂环族环氧树脂性能及其固化机理

本文论述了（ERL－4221,Unox201,Unox269,Unox206和Unox207等）脂环族环氧树脂的性能、固化机理及应用。与双酚A型和酚醛型环氧对比可以看出,脂环族环氧树脂具有粘度低、耐热性好、电气优良等特点,其可用作稀释剂、粘接剂,并在灌封浇铸料、玻璃钢层压制品,缠绕制品和涂料中广泛应用。     

Effect of Ellman's Reagent and Dithiothreitol on the Curing of the Spore Adhesive Glycoprotein of the Green Alga Ulva

Green algae of the genus Ulva (syn. Enteromorpha) are common, green macroalgae found throughout the world in the upper intertidal zone of seashores and as a fouling organism on a variety of man-made structures including ships' hulls. Adhesion of motile spores is achieved via the secretion of an adhesive, which is present in spores in highly condensed form within membrane-bound vesicles. The adhesive is initially liquid and displays a hydrogel-like behavior on release. It then starts to undergo “curing reactions,” becoming progressively less soluble with time in anionic detergents, less sensitive to proteolysis, and less viscoelastic, which suggests that extensive cross-linking occurs. Spores also become progressively more difficult to detach from a surface. However, the nature of this adhesive curing process is totally unknown. In the present article we have tested the hypothesis that thiol cross-linking may be involved. We show that nontoxic concentrations of the thiol-capping reagent (Ellman's reagent) or thiol-reducing agent (dithiothreitol) effectively inhibit the time-dependent development of adhesive spore strength after attachment to a surface. Furthermore, we show by SDS-PAGE immunoblot analysis of extracted adhesive proteins that the major adhesive antigen retains solubility in the presence of these reagents, after release from spores, which suggests that cross-linking had been inhibited.