UV固化光纤带涂料的研制

用环氧丙烯酸酯与聚氨酯丙烯酸酯共混聚合的方法制备出性能优良的UV固化光纤带涂料。讨论了齐聚物种类,齐聚物共混配比,不同官能度单体配比,齐聚物与单体的配比以及光引发剂及其含量对UV固化光纤带涂料的性能如剥离性、拉伸强度、延伸率和柔韧性的影响。     

几种新型UV固化涂料的研究进展

介绍了有机溶剂木质素基环氧丙烯酸酯Olbea涂料、PET膜用UV固化涂料、UV固化超支化PUA/SiO_2杂化涂料、木器用紫外光固化涂料、UV固化环氧/SiO_2杂化涂料、疏水耐污多官能度有机硅UV固化涂料、长臂多官能度大分子UV固化涂料、紫外光固化稀土高分子复合涂料、纳米氧化锡锑/UV固化水性聚氨酯隔热涂料、侧胺基水性聚氨酯UV固化阴极电泳涂料、全氟聚醚改性UV固化丙烯酸酯涂料和UV-潮气固化杂化涂料等几种新型UV固化涂料的研究进展。     

耐候性耐黄变丙烯酸酯改性聚氨酯胶粘剂的合成

采用丙烯酸酯改性以提高聚氨酯胶粘剂的耐候性和耐黄变性能。通过向聚氨酯中加入丙烯酸酯制得具有高强度耐候性耐黄变的单组分胶粘剂(PUA);而丙烯酸酯改性后的聚氨酯固化时间较长,向PUA中加入二月桂酸二丁基锡催化剂(1.5‰)以缩短固化时间。研究了光照湿热老化对PUA胶粘剂耐候性和耐黄变性能的影响,以及丙烯酸酯含量对固化时间和剪切拉伸强度的影响。     

有机硅改性紫外光固化聚氨酯丙烯酸酯低聚物研究进展

文章介绍了紫外光(UV)固化低聚物的种类、特点及应用情况,综述了近年来有机硅改性UV固化聚氨酯丙烯酸酯(PUA)低聚物的研究进展。并对有机硅改性UV固化PUA低聚物的发展趋势进行了展望。     

PUA改性磷酸酯的合成及其光固化性能研究

以聚醚二元醇和POCl3为原料合成了含磷三元醇聚合物,再与异佛尔酮二异氰酸酯(IP-DI)、丙烯酸羟乙酯(HEA)反应,制成了聚氨酯丙烯酸酯(PUA)改性磷酸酯,通过红外光谱进行分析表征。将合成的PUA改性磷酸酯添加在紫外光固化胶粘剂中分析测试了其应用性能,并与紫外光固化胶粘剂(UV胶)中常用的磷酸酯类附着力促进剂进行了对比。结果表明,POCl3与聚醚二元醇在40℃下反应4 h可以得到预期的含磷三元醇。得到的PUA改性磷酸酯与UV胶粘剂中常用的磷酸酯相比,附着力、粘接强度可以达到其要求,但是酸值低于现有的磷酸酯,更适合在UV胶粘剂中应用。     

不同官能度水性聚氨酯丙烯酸酯的合成及性能

以丙烯酸羟乙酯与季戊四醇三丙烯酸酯作为封端剂,分别合成了二官能度水性聚氨酯丙烯酸酯(WPUA2)和六官能度的水性聚氨酯丙烯酸酯(WPUA6),并用红外光谱、粒径仪、热重分析对合成产物结构和性能进行表征。研究表明,相比于使用低官能度WPUA2紫外光固化所得聚氨酯丙烯酸酯(PUA)涂膜,加入单体或使用多官能度WPUA6,都可使PUA固化膜凝胶率提高20%以上,吸水率降低30%;质量损失10%,分解温度增大82℃。提高预聚物官能度可有效提高涂膜交联密度和耐热性能,并具有与加入活性单体相似的应用效果。     

聚氨酯丙烯酸酯增韧环氧丙烯酸酯光固化胶的制备

以甲苯-2,4-二异氰酸酯(TDI)与聚四氢呋喃醚二醇(PTMG)、丙烯酸羟乙酯(HEA)反应,制备了聚氨酯丙烯酸酯(PUA),将PUA与自制的环氧丙烯酸酯(EA)混合,以丙烯酸羟乙酯、丙烯酸异冰片酯等为活性稀释剂,制备了光固化胶粘剂。探讨了PUA的反应机理,通过红外光谱对其结构进行了表征,研究了PUA和EA不同质量比对光固化胶粘剂机械性能的影响以及光引发剂1173的用量对胶粘剂固化时间的影响。结果表明,当m(EA)/m(PUA)=1∶1、光引发剂用量为0.4g时,所制备的光固化胶粘剂对玻璃和金属的附着力均为1级,拉伸强度为12.5MPa,柔韧性优良,并有良好的耐水性和耐溶剂性。     

耐湿热紫外光固化胶粘剂的研制

制备了一种耐水性能优异的紫外光(UV)固化PUA(聚氨酯丙烯酸酯)胶粘剂,并采用水煮试验来考察其耐湿热性能。研究结果表明:当w(羧酸类促进剂UVD)=1.0%~5.0%、w(硅烷偶联剂KH-570)=0.5%(均相对于UV固化胶粘剂质量而言)时,UV固化PUA胶粘剂水煮后的粘接强度保持率>60%,并且其耐水煮时间为5 h,而且其耐水煮性能优于进口同类产品。     

UV固化聚氨酯丙烯酸酯涂料的研究进展

简要介绍了UV(紫外光)固化涂料的发展历程,阐述了PUA(聚氨酯丙烯酸酯)的合成机制及原料选择;重点综述了3种新型UV固化涂料[如WPUA(水性PUA)、双重固化型PUA和改性PUA等]的研究进展,提出了目前UV固化PUA涂料所存在的不足之处及解决办法。最后对UV固化PUA涂料的发展方向及应用前景进行了展望。     

聚氨酯丙烯酸酯软段结构对UV胶性能的影响

以几种不同结构的多元醇、异佛尔酮二异氰酸酯(IPDI)和丙烯酸羟乙酯为原料,合成了多种聚氨酯丙烯酸酯预聚物(PUA).按照同样比例的单体、引发剂及其他助剂配制成光固化胶粘剂(UV胶),考察了聚氨酯中多元醇结构对UV胶固化速度、黏结强度、胶膜性能等的影响.结果表明,聚氨酯结构中软段结构对UV胶粘剂性能影响比较大,合理地选...     

紫外光固化胶粘剂的粘接强度研究

以二官能团PUA(聚氨酯丙烯酸酯)为基体树脂、四氢呋喃丙烯酸酯为稀释单体、γ-缩水甘油醚基丙基三甲氧基硅烷(KH-560)为偶联剂、HCPK(1-羟基环己基苯基甲酮)为光引发剂和nano-SiO2(纳米二氧化硅)为填料,成功制备出一种UV(紫外光)固化胶。将UV固化胶用于PC(聚碳酸酯)塑料片材的胶接,并以该胶接件的T型剥离强度作为考核指标,采用单因素试验法优选出制备UV固化胶的较佳配方。结果表明:当w(二官能团PUA)=64%、w(HCPK)=3.0%、w(KH-560)=1.00%、w(四氢呋喃丙烯酸酯)=30%和w(nano-SiO2)=2.0%时,UV固化胶的剥离强度达到甚至超过市售同类产品(loctite3106)。     

UV固化胶粘剂应用研究进展

论述了当前UV固化胶粘剂的应用现状,对UV固化胶粘剂配方中的主要原料预聚物、单体、光引发剂等的研究进展做了详细的阐述。     

Design and synthesis of bio-based UV curable PU acrylate resin from itaconic acid for coating applications

UV curable PUA resin was successfully synthesized from polyol based on sustainable resource originated from itaconic acid (IA), isophorone diisocyanate (IPDI) and 2-hydroxyethyl methacrylate (HEMA). A polyol was synthesized by condensation reaction of IA with 16-hexanediol in the presence of p-Toluenesulfonic acid (pTSA). The synthesized PUA resin was characterized for its structural elucidation by using Fourier Transform Infrared Spectrophotometer (FTIR), ¹H and ¹³C NMR spectroscopy. The synthesized UV curable PUA resin was incorporated in varying concentrations in conventional PUA coating system. The effects of varying concentration of synthesized UV curable PUA resin on rheology, crystallinity, thermal and coating properties were evaluated. The rheological behavior of the resins were evaluated at variable stress and result showed decrease in viscosity of resin as concentration of synthesized UV curable PUA resin increases in conventional PUA resin. The cured coatings have been evaluated for glass transition temperature (T_g) and thermal behavior by differential scanning calorimeter and thermogravimetric analysis respectively. The degree of crystallinity of the coatings was determined from X-ray diffraction patterns using the PFM program. It was found that increase in the mass proportion of IA based PUA in coatings, the coating becomes more rigid and crystalline. The synthesized UV curable PUA coatings showed interesting mechanical, chemical, solvent and thermal properties as compared to the conventional PUA. Further, cured coatings were also evaluated for gel content and water absorption.     

用于UV塑胶涂料的树脂合成研究

以二元醇、异佛尔酮二异氰酸酯（IPDI）和自制单体（A-99）为原料合成了二官能团UV固化聚氨酯丙烯酸酯（PUA）。研究了不同结构的多元醇、反应物配比、反应时间和阻聚剂的选取等对树脂合成的影响。     

UV/heat dual‐curable adhesive tapes for fabricating stacked packages of semiconductors

To facilitate the fabrication of a reliable stacked package for a semiconductor, UV/heat dual curing of adhesives was investigated. The formulated adhesives contained acrylic monomer and epoxy resins. First, UV curing was conducted on the acrylic monomer, followed by heat curing. It was found that UV‐curable acrylic monomers affected the adhesive's properties, e.g., adhesion, water absorption, and viscoelasticity. As the acrylic monomer, neopentylglycol diacrylate (NPGDA), trimethylolpropane triacrylate (TMPTA), dipentaerythritol hexaacrylate (DPHA), and tricyclodecanedimethanol acrylate (TCDDA) were used to investigate the effect of functional group numbers and structure. As a result, an acrylic monomer that has two functional groups with a rigid moiety (TCDDA) showed acceptable properties as adhesives for the fabrication, and thus a UV/heat‐curing adhesive has been successfully developed. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008     

紫外光UV固化粘合剂

紫外光固化粘合剂随着紫外光固化技术的发展获得了快速发展。详细介绍了紫外光固化粘合剂的应用机理及其组成成份 ,如齐聚物、反应单体、光引发剂。并列举了几种不同类型的紫外光固化粘合剂 ,即层压粘合剂、压敏粘合剂和双重光固化粘合剂等。     

紫外光固化粘合剂的发展

紫外光固化粘合剂随着紫外光固化技术的发展获得了快速发展。本文从应用角度评述了紫外光固化粘合剂的组成。诸如：可聚合齐聚体,活性单体,光引发剂等,并主要介绍了两种紫外紫外光固化粘合剂,即层压粘合剂和压敏粘合剂。提出了发展我国上光固化粘合剂的几点建设。     

Synthesis and characterization of sequential interpenetrating polymer networks of polyurethane acrylate and polybenzoxazine

High‐performance ultraviolet (UV) curable polyurethane acrylate (PUA) coating alloyed with thermally curable polybenzoxazine (PBA) is developed. The hybrid polymer networks of PUA and PBA‐a were prepared by sequential cure methods, i.e., UV cure of the PUA followed by thermal cure of the PBA fraction. The effects of sequential cure were investigated in terms of mechanical, thermal, and physical properties of the resulting polymer alloys. The fully cured PUA/PBA‐a alloy films showed only single glass transition temperature (T_g) suggesting high compatibility between the two polymer networks, possibly of an interpenetrating polymer network type. The storage modulus in a glassy state and T_g of PUA/PBA‐a alloys were found to substantially increase with increasing PBA‐a content. Furthermore, degradation temperature at 10% weight loss of the PUA/PBA‐a alloy films was relatively high whereas the char yield at 800°C was found to increase with a PBA‐a component. Hardness was enhanced, whereas water absorption and water vapor permeation rate of the alloy were suppressed by the incorporation of the PBA‐a into the polymer alloys. As a consequence, the properties of UV curable PUA networks can be positively tailored and enhanced by forming hybrid network with PBA‐a. POLYM. ENG. SCI., 54:1151–1161, 2014. © 2013 Society of Plastics Engineers     

HT系列UV胶及在LCD、手机按键制造中的应用

简述了LCD(液晶显示器)和手机按键种类、结构及其生产中所使用的UV固化胶粘剂品种;LCD组装所使用的UV封口胶粘剂及管脚胶粘剂的性能要求和测试方法;手机按键的材料种类及粘接的工艺、技术要求、测试方法;UV胶粘剂的配方研究中必须解决的技术关键。介绍了一些重要齐聚体的化学结构式和单体、引发剂、助剂的选用原则,以及几种HT系列UV固化胶粘剂的性能指标。     

光固化胶粘剂的研究进展

介绍了紫外光和可见光固化型胶粘剂体系中光引发剂的最新研究进展,重点论述了紫外光和可见光固化型胶粘剂的最新发展。