附着力促进剂对光固化金属基涂层附着力提升的研究

为了探究附着力促进剂对光固化金属基涂层附着力的影响,本文通过划格法、拉拔法及搭接剪切实验,系统研究了磷酸酯类附着力促进剂、硅烷偶联剂对光固化金属基(低碳钢、铝板)涂层附着力的促进作用。结果表明:磷酸类附着力促进剂能够显著提高光固化金属基(低碳钢、铝板)涂层的附着力,而硅烷偶联剂对光固化金属基(低碳钢、铝板)涂层的附着力无明显提升作用。     

附着力促进剂对铝阴极板表面环氧涂层性能的影响

为了探究附着力促进剂对铝阴极板表面环氧涂层性能的影响,本文通过拉拔实验、盐雾实验、硫酸锌浸泡实验以及交流阻抗测试,系统研究了磷酸酯类和硅烷偶联剂类附着力促进剂对环氧涂层附着力和耐腐蚀性的影响。结果表明：附着力促进剂可以明显提升环氧涂层和铝基材的结合力,添加 3%附着力促进剂 2063的涂层附着力最优,可以达到 12. 85 MPa,破坏类型以层间破坏为主;但是交流阻抗图谱显示其低频区的阻抗值比附着力促进剂 4512的低 2个数量级,通过盐雾实验和硫酸锌浸泡实验也可以看出附着力促进剂 4512可以显著提升环氧涂层的耐腐蚀性能。为平衡涂层附着力和耐腐蚀性能,通过将附着力促进剂 2063与 4512按质量比 2∶1进行复配,其附着力和耐腐蚀性可以满足要求,附着力可以达到 14. 4 MPa。     

单官能度单体结构对光固化涂层附着力的影响

为探究单官能度单体结构对光固化涂层附着力的影响，以环氧丙烯酸酯为主体树脂，选用常用的几种单官能度（甲基）丙烯酸酯单体作为活性稀释剂，制备了一系列紫外光固化涂料。通过双键转化率测试及旋转流变仪测试对涂层光固化过程进行表征，通过拉拔法对涂层附着性能进行测试。结果表明：单官能度单体结构和用量对涂料固化速度、双键转化率、固化收缩应力和附着力等都会产生影响，单体结构和用量的优化可有效提升涂层在金属基材表面的附着力。相同单体用量下，甲基丙烯酸酯涂层的附着力约为丙烯酸酯涂层附着力的 2倍。     

紫外光固化金属防腐蚀涂料的研究—对基质的附着力及其影响因素

提出了紫外光固化金属防腐蚀涂料。此涂料由含环氧基的预聚物、复合稀释剂、复合光引发剂及附着力促进剂等组成。叙述了预聚物合成、涂料配制，以及涂层附着力、耐磨损性的测试方法。讨论了涂料配方变化及附着力促进剂等因素对涂层附着力的影响。实验表明，多官能丙烯酸酯与单官能丙烯酸酯（摩尔比１：１）组成的复合稀释剂的效果最佳。安息香双甲醚与二苯甲酮配合，不仅消除了体系黄变，而且固化快，对紫外光源的适应范围广；复合光     

紫外光固化金属防腐蚀涂料的研究－对基质的附着力及其影响因素

提出了紫外光固化金属防腐蚀涂料。此涂料由含环氧基的预聚物、复合稀释剂、复合光引发剂及附着力促进剂等组成。叙述了预聚物合成、涂料配制，以及涂层附着力、耐磨损性的测试方法。讨论了涂料配方变化及附着力促进剂等因素对涂层附着力的影响。实验表明，多官能丙烯酸酯与单官能丙烯酸酯（摩尔比１：１）组成的复合稀释剂的效果最佳。安息香双甲醚与二苯甲酮配合，不仅消除了体系黄变，而且固化快，对紫外光源的适应范围广；复合光引发剂用量为３％。采用烷氧基硅化合物同一种端羟基聚二有机硅氧烷的反应产物作附着力促进剂。     

高硬度紫外光固化涂料附着力的影响研究

研究了偶联剂、磷酸酯化的丙烯酸酯类单体及低聚物、氯化树脂等附着力促进剂、主体树脂的用量、光引发剂的用量对PET窗膜用高硬度紫外光固化涂料附着力的影响,结果表明:附着力促进剂中钛酸酯偶联剂NDZ - 201对改善涂层附着力效果显著;在主体树脂中,当复合主体树脂P6和8000A的质量比为1∶1时,涂膜表现出了良好的硬度及附着力;当光引发剂用量为6％时,涂层表现出了良好的附着力.     

聚丙烯用附着力促进剂研究进展

从氯化聚丙烯（CPP）的改性、附着力促进剂的无氯化和水性化三个方面综述了聚丙烯（PP）用附着力促进剂的研究进展。介绍了不饱和酸（酐）改性CPP的研究和无氯附着力促进剂的制备方法,阐述了机械法、相反转法、自乳化法和乳液聚合法制备水性附着力促进剂时各自的优缺点和适用范围,总结了可控自由基聚合在PP用附着力促进剂领域的应用。最后指出在进一步的研究中还需要提高无氯附着力促进剂与面漆树脂相容性和水性附着力促进剂的稳定性。     

光纤用改善了对玻璃附着力的快速固化UV固化涂料组合物:

UV固化涂料组合物含丙烯酸酯低聚物和丙烯酸乙烯基酯化合物,后者可用作反应稀释剂和附着力促进剂。丙烯酸乙烯基酯化合物有好的混溶性、粘度低并且提高了固化底涂层对玻璃的附着力。由于使用了自由基光引发剂,丙烯酸乙烯基酯化合物提高了未固化底涂层的固化速度。一种涂料可由     

聚碳酸酯用透明涂料中附着力促进剂的制备及研究

以相对分子质量不同的端羟基聚醚为原料,用3-异氰酸酯基丙基三乙氧基硅烷(IPTES)改性制备了附着力促进剂。以甲基三乙氧基硅烷(MTES)、正硅酸乙酯(TEOS)、异丙醇等为主要原料,采用溶胶-凝胶法制备透明涂料,其可用作PC板表面增硬涂层。考察了样板固化后的附着力、耐磨性及在100℃的沸水中水煮2 h后附着力及耐磨性的变化。结果表明:用IPTES改性聚醚N-204制备的附着力促进剂能明显增加涂层的耐水煮性能,当R值(n(OH)∶n(NCO))为1.2且附着力促进剂的用量在5%时,涂层水煮2 h后其附着力能达到5B,耐磨性良好。     

钛合金表面用附着力促进剂的研究

制备了不同附着力促进剂,采用拉开法测试涂层在钛合金上的附着力,评价了不同附着力促进剂对涂层在钛合金上附着力的贡献大小,筛选出了以改性聚酰胺改性偶联剂KH-560制备的附着力促进剂,通过研究不同物质的量比对其附着力和贮存稳定性(凝胶)的影响,以及溶剂用量对附着力促进剂贮存稳定性的影响,最终确定了偶联剂和改性聚酰胺的物质的量比为4∶1,溶剂加入量为60%。     

附着增进剂对塑料涂料在聚碳酸酯底材上应用的影响

聚碳酸酯具有良好的硬度、耐热性与透明性,所以广泛用于塑料相关领域,然而塑料涂料对于PC底材或是ABS/PC复合塑料很容易出现附着不良的问题,尤其是涂膜经过温、湿度环境测试后,附着不良的情况更为严重。试验附着增进剂添加在双组分聚氨酯涂料与紫外光固化涂料中对PC底材的附着效果,结果显示,选择适合的附着增进剂可以显著改善涂料对PC底材的附着效果,并且通过温、湿度环境测试。     

紫外光固化玻璃涂膜附着力的研究

研究了低聚物、活性稀释单体以及助剂对玻璃涂膜附着力的影响。实验发现加入一定量的三官能团酸酯或硅烷偶联剂可以显著提高紫外光固化玻璃涂膜对玻璃的附着力。     

Adhesion improvement of UV-curable ink using silane coupling agent onto glass substrate

In order to enhance the adhesions of the UV-curable inks onto glass substrate, the silane coupling agents were added into the mixture of monomer and oligomer. The monomer, containing high functionality or surface tension could lead to a high cross-link density of the polymeric network and low adhesions of UV-curable inks. With the amount of ethyoxyls of ethoxylated trimethylolpropane triacrylate increasing, adhesions of the oligomers were improved. As the monomer concentration increased, the adhesion ability of UV-curable ink onto glass was decreased. The adhesion ability of UV-curable inks onto glass was increased via adding silane coupling agents. When the concentration of the silane coupling agents was more than 12%, the adhesion ability of UV-curable inks onto glass was decreased. Silane coupling agents (3-methacryloxypropyl) trimethoxy silane (KH570) and (3-aminopropyl) triethoxy silane (KH550) were more effective than (3-glycidoxypropyl) trimethoxy silane (KH560) in the inks under the same concentration. Video microscope and scraper fineness test revealed that the pigment particles declined with the increase of grinding times, whereas the adhesions of UV-curable inks were enhanced.     

表面改性在提高硅胶基体与抗菌涂层结合力中的应用

聚合物基体与抗菌涂层间结合力的大小至关重要,它决定了抗菌制品的使用寿命与抗菌效果。本研究中采用γ射线辐射改性聚合物基体表面,并接枝偶联剂（γ-APTS）获得活性表面,从而制得紧密键合在基体表面的 Ag-PTFE复合抗菌涂层。通过扫描电子显微镜（SEM）观察涂层表面形貌,X射线能量色散谱（EDS）与面分布表征涂层中各元素分布状况;ASTM D-3359法测试涂层与基体间结合力;通过对多组大肠杆菌的抑菌环试验与震荡烧瓶实验表征涂层抗菌活性。结果表明,γ射线辐照可有效提高聚合物基体表面活性,显著提高了涂层与基体间结合力,且抗菌效果优异。     

偶联剂对纳米材料分散的影响及相关光固化涂料研究

纳米材料由于特殊的结构,不容易在紫外光固化体系中分散稳定,通过不同硅烷偶联剂和钛酸酯偶联剂的处理发现,钛酸酯偶联剂(JN-C)有助于提高纳米材料在紫外光固化体系中的分散稳定性,在此基础上,制备了紫外光固化纳米木器底漆,测试了其硬度、耐水性、耐醇性和耐磨性等理化性能,结果表明该涂料具有良好的理化性能。     

Adhesion promotion and corrosion prevention using thin anisotropic coatings

Using sol-gel technology, thin organic/ceramic (ceramer) coatings have been applied to metal surfaces to enhance such surface properties as adhesion promotion and corrosion prevention. Isotropic coatings have been found to be effective in certain applications such as corrosion prevention, but the formation of anisotropic (functionally gradient) coatings permits greater flexibility over the resulting properties. Isotropic coatings derived from tetraethoxysilane, for example, have been found to effectively inhibit corrosion while being only 100-1000 A thick. These coatings do not, however, promote adhesion. Thin coatings made from traditional silane adhesion promoters alone are unable to prevent corrosion of metallic substrates. Using monomers with appropriate reactivities permits the single-step synthesis of anisotropic coatings that can both promote adhesion and prevent corrosion. These types of anisotropic coatings allow the physical and chemical properties of a coating to be varied as a function of the distance from the substrate and confer properties to the substrate that would not be possible from a single isotropic coating. The principle behind the construction of these anisotropic coatings is general enough that it can be used in many applications where microengineering of surface structures is important.     

紫外光固化卷材涂料的研制

紫外光固化涂料由于固化速度快、体积收缩大,故通常存在与金属基材附着力差的问题。以多官能脂肪族聚氨酯丙烯酸酯和双酚A环氧丙烯酸酯作为预聚物、甲基丙烯酸羟乙酯作为活性单体、磷酸酯作为附着力促进剂,研究了涂料体系各组分配比及固化时间对涂膜性能的影响。     

Metal–Plastic Adhesion in Injection-Molded Hybrids

Polymer–metal hybrids are replacing steel structures in many applications. Combining metals and plastics is, however, complicated because they have very different physical and chemical characteristics. This study characterizes plastic–metal adhesion in insert-injection-molded hybrids. Diaminofunctional silane was used as a coupling agent between thermoplastic urethane and stainless steel. Before silane treatment, various surface treatments, including electrolytic polishing and different oxidation treatments, were applied to the steel inserts to understand better the bonding between silane and steel. The effects of the surface treatments and silane application on plastic–metal adhesion were studied by means of contact angle measurements, adhesion tests, and microscopic characterizations. Electrolytic polishing and oxidation of the steel inserts significantly improved the silane bonding to the steel insert, and consequently the plastic adhesion to steel.     

The influence of aluminium surface pretreatment on the corrosion stability and adhesion of powder polyester coating

One of the most important factors in corrosion prevention by protective coatings is the coating adhesion loss under environmental influence. Thus, adhesion strength is often used when characterizing protective properties of organic coatings on a metal substrate. In order to improve the adhesion of organic coating the metal substrate is often pretreated in some way. In this work, the adhesion of polyester coatings on differently pretreated aluminium surface (by anodizing, with and without sealing, by phosphating and by silane film deposition) was examined. The dry and wet adhesion of polyester coatings were measured by a direct pull-off standardized procedure, as well as indirectly by NMP test. It was shown that under dry test conditions all polyester coatings showed very good adhesion, but that aluminium surface pretreated by silane film showed superior adhesion. The overall increase of wet adhesion for polyester coating on aluminium pretreated by silane film was maintained throughout the whole investigated time period. The different trends in the change of adhesion of polyester coatings were observed for different aluminium pretreatments during exposure to the corrosive agent (3% NaCl solution). The highest adhesion reduction was obtained for polyester coating on aluminium pretreated with phosphate coating. The corrosion stability of polyester coated aluminium was investigated by electrochemical impedance spectroscopy in 3% NaCl solution. The results confirmed good protective properties of polyester coating on aluminium pretreated with silane film, i.e. greater values of pore resistance and smaller values of coating capacitance were obtained in respect to other protective systems, whereas charge-transfer resistance and double-layer capacitance were not measurable during 2 months of exposure to a corrosive agent.     

环氧粉末涂层对金属基材附着力的影响因素

环氧粉末涂料具有附着力好、耐腐蚀性强、耐温性能好等优点,在金属防腐特别是重防腐领域应用非常广泛。在环氧粉末涂层的诸多性能中,涂层对基材的附着力是非常重要的一项技术指标,也是满足其他性能的基础,附着力的好坏直接影响着涂层对基材的保护寿命。本文主要从喷涂温度、基材表面处理的表面粗糙度以及粉末涂料原材料等方面讨论了环氧涂层对金属基材表面附着力的影响因素。研究表明：喷涂温度提高有利于涂层附着力的提高,表面粗糙度提高且锚纹深度相对均匀有利于涂层附着力的提高,填料以及助剂的种类对附着力具有一定的影响。