新一代车间底漆

节能降本、绿色环保和健康安全是造船业及涂料业面临的大问题。对新一代耐高温可焊性车间底漆与传统型车间底漆、第一代车间底漆作了系统的比较,展现其所拥有的优势和特点。     

钢结构用水性环氧防腐底漆的研制

采用水性环氧固化剂乳化固化液体环氧树脂技术路线,制备钢结构用水性双组分环氧防腐底漆。该底漆VOC含量低,气味和毒性小,涂膜附着力强,耐水、耐碱、耐盐雾性能好。其性能可以达到溶剂型环氧底漆水平,成本与溶剂型环氧底漆相当。     

建筑外墙用低透水性高附着力底漆的研究

研究了乳胶搭配、颜填料搭配以及硅烷偶联剂引入对底漆性能的影响,开发出低透水性高附着力外墙用底漆。结果表明：采用粒径小、玻璃化转变温度低的乳胶复配粒径大、玻璃化转变温度高的乳胶可以平衡底漆透水性和附着力,并提升其对基材的加固性能。采用粗细颜填料搭配可以降低底漆与美纹纸锚固面积,减弱美纹纸撕脱底漆风险;滑石粉的引入可以提升涂膜致密程度与硬度,提升底漆透水性与附着力。开发出的低透水性高附着力外墙用底漆在不同温湿度环境下,均与灰粗腻子具有较强的适配性。     

车间底漆贮存稳定性试验

灰色、绿色车间底漆产品各选取1个批次进行为期1年的贮存稳定性试验,评定试验前后样品的沉降程度、黏度变化等,两种颜色的车间底漆贮存稳定性试验评定结果为"通过"。试验发现,绿色车间底漆的贮存稳定性优于灰色车间底漆,这主要是因为绿色车间底漆中添加了相对密度较小的黄色、蓝色颜料,且具有一定的触变作用,提升了其防沉性。     

环境友好型金属耐腐蚀乳胶底漆的研制

研制了一种环境友好型防腐蚀乳胶底漆，其成分对环境无污染。讨论了颜料种类、颜基比、成膜助剂等对底漆性能的影响，确定了三聚磷酸二氢铝耐腐蚀乳胶底漆的配方和合成工艺。     

无机涂料

环境友好型水溶性无机涂覆剂、其制备方法、涂装方法和由其涂覆的产品；水性无机富锌底漆在原油储罐中的应用；水性无机富锌底漆的研究及几种富锌底漆的比较；[编者按]     

车间底漆在船厂生产线应用对比

在船厂生产线上将水性无机锌底漆和无机硅酸锌车间底漆进行对比试验研究,重点探讨了水性无机锌车间底漆在生产线的适用性,实验显示,水性无机锌车间底漆可以在预处理流水线上使用,其干燥时间、附着力、焊接与切割、耐候性等方面能达到船厂生产线的要求。     

PP保险杠底漆专用树脂的合成及底漆性能研究

PP底材其结晶度高、耐溶剂腐蚀性强、表面能低,常用的底漆很难对其附着。本研究根据PP的特点,采用氯化聚丙烯(CPP)接枝丙烯酸树脂工艺,合成出了一种PP保险杠底漆专用树脂。并通过对颜填料、分散剂、溶剂等的筛选,制备了PP保险杠专用底漆。该底漆不仅能够很好地密着PP素材,还能与面漆有优异的层间附着力。     

抗碱底漆及其阻碱效应

分析了影响建筑物外墙涂膜耐久性的各种因素.介绍了抗碱底漆阻碱、盐的机理,并对比了阴离子型丙烯酸底漆、阳离子型硅丙底漆、水性环氧底漆、硅溶胶-乳液复配底漆、渗透型有机硅底漆、溶剂型底漆的性能.     

新型高耐盐雾水性环氧富锌底漆的制备

介绍了一种既可降低水性环氧富锌底漆成本,又可提高其耐盐雾性的水性环氧富锌底漆制备方法。采用一种来源广泛的新型高效无毒防锈颜料,极大程度提高了水性环氧富锌底漆的防腐蚀能力,对水性环氧富锌底漆的推广应用起到了积极的作用。     

几种封闭底漆的性能浅析

从透气性、附着力、机械性、耐碱性及耐水性等方面对阳离子封闭底漆、水性环氧封闭底漆、硅溶胶改性封闭底漆、普通丙烯酸封闭底漆的封闭效果进行了理论分析和实验比较。     

-NCO基硅氧烷底涂剂对聚氨酯密封胶粘接性能的影响

采用有机溶剂稀释KSA(-NCO基硅氧烷化合物),并以此作为单组分湿固化聚氨酯(PU)密封胶的玻璃基材底涂剂。采用单因素试验法考察了无底涂剂试样、含传统Z-6040底涂剂试样和含KSA底涂剂试样对PU密封胶与玻璃基材之间粘接性能的影响。结果表明:当KSA底涂剂的固含量为15%、底涂剂与密封胶的涂敷间隔时间为15 min时,含KSA底涂剂的试样比含传统Z-6040底涂剂的试样更能有效提高PU密封胶与玻璃胶接件的综合性能;前者的剥离强度为9.5 N/mm且为内聚破坏,水中浸泡7 d后其剥离强度仅下降32%,4次高低温循环后其剥离强度仍高达4.1 N/mm。     

环境友好型底胶的研究进展

在航空工业中的胶接领域,为了降低底胶中含有的大量挥发性有机溶剂（VOC）和铬酸盐,促进了环保型底胶的研发。对于水基底胶、无机底胶以及不合铬酸盐的底胶的胶接耐久性试验表明,一些新型的环保型底胶的性能与传统的溶剂型底胶处于同一水平甚至更好。新型底胶也同样能够提高复合材料的胶接强度和耐久性能,但应该寻找更环保、更简便的方法来获得耐久性的胶接。磷酸阳极化作为铝合金胶接中最好的表面处理方法本身具有很好的耐久性,使用耐久性较好胶粘剂获得耐久胶接是较好的方案之一。     

原子灰粉尘对底漆与中涂漆附着力影响的探讨

普通原子灰灰尘严重影响底漆与中涂之间的附着力。考察了除去原子灰灰尘的不同方法和不同原子灰配方,发现用溶剂擦干净底漆上的灰尘或打磨底漆,可以解决原子灰灰尘对底漆与中涂附着力的影响;调整原子灰配方,不用除去原子灰灰尘且不打磨底漆,底漆与原子灰间附着力可达到0级。     

水性环氧底漆与不饱和聚酯腻子层间附着力的影响因素及机理分析

通过试验分析了底漆干燥条件、腻子层厚度以及底漆层与腻子层的配套性对水性环氧底漆与不饱和聚酯腻子涂装体系层间附着力的影响。试验证明：当水性环氧底漆干膜厚度为55—65μm时,根据体系配套性恒温60℃烘干2～4h,自然干燥20～22h,刮涂390～450μm腻子层,能够达到良好的层间附着力。     

The effect of a multicomponent silane primer on the interphase structure of aluminum/epoxy adhesive joints

The structure of films formed by a multicomponent silane primer applied to an aluminum adherend and the interactions of this primer with an amine-cured epoxy adhesive were studied using X-ray photoelectron spectroscopy, reflection-absorption infrared spectroscopy, and attenuated total reflectance infrared spectroscopy. The failure in joints prepared from primed adherends occurred extremely close to the adherend surface in a region that contained much interpenetrated primer and epoxy. IR spectra showed evidence of oxidation in the primer. Fracture occurred in a region of interpenetrated primer and adhesive with higher than normal crosslink density. The primer films have a stratified structure that is retained even after curing of the adhesive.     

Corrosion protection of galvanized iron by polyaniline containing wash primer coating

Wash primer treatment of galvanized iron (GI) structure is widely used before painting in order to improve adhesion. Traditional wash primer contains zinc tetroxy chromate. Due to hazardous nature of chromate, alternate compounds for chromate replacements have been identified. In recent years polyaniline containing coating has been found to protect GI. In this study, a wash primer based on polyaniline has been formulated and its corrosion protection ability of GI has been compared with that of traditional chromate based wash primer by salt spray and EIS test. It has been found that the polyaniline based wash primer is able to protect GI and its corrosion protection performance is similar to chromate based wash primer coating.     

Characterization of a chromate-inhibited primer by doppler broadening energy spectroscopy

A chromate-inhibited primer has been characterized by Doppler broadening energy spectroscopy (DBES), scanning electron microscopy (SEM), and Raman spectroscopy. The S-parameter obtained by DBES exhibited a three-layer depth profile, which is attributed to the presence of a “skin” layer in the polymer matrix of the primer and a concentration gradient in the inorganic phases distributed through the primer. The primer was also examined by DBES following immersion in solution. The change observed in the S-parameter upon immersion indicated water filling the molecular free volumes in the primer. The ability to monitor the depth of water uptake as a function of immersion time illustrates that the primer does not need to be fully saturated for chromate release to occur.     

水性聚氨酯底胶的研究

采用水性聚氨酯分散体作为PVDC乳液的底胶（底涂剂）,研究了聚合物多元醇、异氰酸酯、封端剂、润湿剂等对涂膜性能的影响,确定了以苯酐-己二酸聚酯多元醇、TDI／MDI混合并氰酸酯、BDO等为主要原材料合成了水性底胶,实验结果表明,该底胶的各项性能完全达到溶剂型底胶的性能要求,且以水为稀释剂大大降低了原材料成本,同时有利于环保。     

Interfacial behavior of polyimide/primer/copper system by preoxidation of the primer

The copolymers of vinyl imidazole (VI) and vinyl trimethoxy silane (VTS) were applied as the corrosion inhibitors and the adhesion promoters for the polyimide/copper system at elevated temperatures. The mol ratios of VI to VTS were 100 : 0, 70 : 30, 30 : 70, and 0 : 100. Preoxidation of the primer was performed to improve the reactivity of the primer on poly(amic acid). A peel test was performed to evaluate the adhesion strength of the polyimide/primer/copper system after heat treatment at 400°C in a nitrogen atmosphere. The effect of the preoxidation of the primer on corrosion protection and adhesion promotion were investigated by Fourier transform infrared spectroscopy (FTIR), X‐ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The adhesion strength of the polyimide/primer/copper system depended on not only the chemical interaction between polyimide and the preoxidized primer, but also the thermal stability of the primer. It showed the highest value when the mol ratio of VI to VTS was 30 : 70. The primer layer reduced or suppressed copper diffusion into the polyimide layer. The degree of corrosion protection by the primer was affected by its thermal stability and its reactivity on copper. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 2518–2524, 2000