辐射固化涂料及其发展

综述了红外线固化、紫外线固化和电子束固化等辐射固化涂料所用的设备、固化机理、涂料组成、它们的共性及区别,从涂料和涂膜性能、节省能源、环境友好等方面比较了辐射固化涂料和传统涂料,并展望了辐射固化涂料的发展前景。     

辐射固化涂料及其发展（Ⅰ）

综述了红外线固化、紫外线固化和电子束固化等辐射固化涂料所用的设备、固化机理、涂料组成、它们的共性及区别,从涂料和涂膜性能、节省能源、环境友好等方面比较了辐射固化涂料和传统涂料,并展望了辐射固化涂料的发展前景.     

辐射固化丙烯酸酯防腐涂料的制备及性能研究

为将绿色环保的辐射固化技术用于制备金属防腐涂料,分别选用了聚氨酯丙烯酸酯、双酚A型环氧丙烯酸酯以及改性双酚A型环氧丙烯酸酯作为涂料的主要成膜物质,选用紫外光（UV）、电子束（EB）2种固化方式以及5种辐照剂量（80 kGy、160 kGy、240 kGy、320 kGy、400 kGy）制备了一系列辐射固化防腐涂层。通过凝胶含量、双键转化率、基础性能、吸水率、电化学阻抗谱测试和盐雾试验探究了不同辐射固化方式和辐照剂量对涂层固化程度以及性能的影响。结果表明：多数情况下EB固化涂层的双键转化率和凝胶含量大于UV固化涂层;辐照剂量越大,涂层的双键转化率和凝胶含量越高;对于分子链刚性较大的树脂体系,辐照剂量过大时会严重影响涂层的附着力,致使涂层耐腐蚀性下降;对于分子链柔性较好的树脂体系,EB固化涂层由于固化程度较高,其耐腐蚀性优于UV固化涂层,且随着辐照剂量增加,涂层硬度、附着力和耐腐蚀性都有所提高;对于分子链柔性适中的树脂体系,EB固化涂层和UV固化涂层都具有较高的固化程度及较强的附着力,两者的耐腐蚀性并没有明显差异。     

辐射固化涂料

功能涂料用的组合物及其形成的涂膜以及该组合物和该涂膜的形成方法；活化能射线固化的涂料组合物及形成涂膜的方法；可辐射固化的可喷涂环氧丙烯酸酯涂料组合物、木材饰面漆和多道复合涂层；可辐射固化组合物、涂装底材制备及涂漆件；辐射固化涂料组合物；多元酸改性环氧丙烯酸UV树脂的合成；紫外光固化材料表面物化性质的表征与研究；[编者按]     

辐射固化涂料

金属闪光颜料组合物和含该组合物的UV固化金属闪光油墨组合物或UV固化金属闪光涂料组合物，用 UV 固化涂料涂装砑光膜的方法，高膜厚高平整性辐射固化涂层的形成方法，辐射固化组合物和带有优异耐划伤性和附着力的固化涂膜的物件，光固化树脂组合物及由其形成的附着力和柔韧性优异的涂膜。     

电子束固化木器清漆的制备及性能研究

电子束（ EB）固化技术作为一种重要的辐射固化技术,其固化的清漆涂层性能在许多方面优于紫外（ UV）光固化清漆涂层。本研究通过选取不同类型的商品化丙烯酸树脂及活性稀释剂配制木器涂料配方,分别利用电子束（ EB）和紫外光（ UV）对其进行固化,然后对固化后的涂层进行基本性能、热性能和机械性能的表征。研究结果表明： EB固化速度快,固化膜具有较高的铅笔硬度和附着力,而且树脂种类和单体结构的不同会对电子束固化涂层的热性能及机械性能产生影响。     

紫外光固化环氧丙烯酸酯涂料的研制

研制了一种紫外光固化环氧丙烯酸酯涂料。研究了紫外光的辐射距离、辐射时间、偶联剂、二乙胺和活性稀释剂对涂膜固化速度、硬度和附着力等性能的影响，并用FTIR表征了环氧丙烯酸酯涂料固化前后的结构。     

辐射固化和有机硅系杂化涂料简介

紫外线固化涂料（简称UV固化涂料）和电子束固化涂料（简称EB固化涂料）统称辐射固化涂料,由于UV固化涂料的涂装设备投资低,应用推广比EB固化涂料快得多。等离子体固化有着和UV固化相同的机理,它也属于辐射固化。UV固化涂料固化速度快（以秒计）、VOC低、符合环保要求,且效率高和节能,尤其固化时放热少,适合各种对热敏感的材料,如纸张、塑料、木材、皮革等的涂装,所以UV固化涂料发展很快。     

颜料对紫外光固化环氧丙烯酸酯涂料的影响

研制了一种新型彩色艺术玻璃涂料———紫外光固化环氧丙烯酸酯彩色涂料,研究了辐射时间、颜料的种类、用量及其复合方式等因素对涂膜的固化速度、硬度和附着力等性能的影响。     

紫外光固化环氧丙烯酸酯涂料的研究

合成了适于配制紫外光固化涂料的环氧丙烯酸酯,重点研究了反应温度对环氧树脂与丙烯酸反应的影响,并利用红外光谱观察了产物的结构,以及不同活性剂、辐射时间对固化涂膜性能的影响。     

UV Curable Acrylate Nanocomposites: Properties and Applications

Transparent nanocomposites were prepared from nano-sized silica and radiation curable acrylates. To improve the embedding of silica nanoparticles within the acrylate matrix the filler surface was modified by trialkoxysilanes. Instead of an expected monomeric silane grafting polysiloxane structures were anchored on the nanoparticle surface due to acid catalyzed pre-hydrolysis/condensation of trialkoxysilanes. The polysiloxanes structures covering the silica surface were characterized by temperature-programmed oxidation, infrared and multinuclear MAS NMR spectroscopy. MALDI-TOF mass spectroscopy revealed the formation of polysiloxane oligomers with more than 20 monomeric silane units. Ladder-like polysiloxane chains have been proposed and atomic force microscopy were used to visualize the structure of surface-anchored organosilanes. These ladder-like structures are assumed to build up a short range interpenetrating network with polyacrylate chains during UV or EB curing.Due to the organophilic modification of silica nanoparticles reinforced acrylate formulations can contain up to 50 wt.-% nanofiller maintaining satisfactory rheological properties. These formulations can be used as coatings on substrates such as polymer films, paper, metal, wood, engineered wood, etc. After UV/EB curing nanoparticle reinforced polyacrylate coatings are obtained which show markedly improved properties as compared to neat polymers, e.g., increased microhardness and modulus, improved scratch and abrasion resistance, higher gas barriers and temperature resistance. Due to the nano-sized silica filler the cured coatings remain transparent, hazeless and glossy.On a pilot scale unit acrylate nanocomposite coatings are manufactured for roll coating, curtain coating and spray applications. Basic properties of acrylate nanocomposite coatings are described.     

辐射固化涂料

介绍了辐射固化的原理,ＵＶ／ＥＢ固化涂料的配方构成、光源选择及原材料选择,并列举了各种用途的配方实例     

The Effect of Radiation Dosages and UV/EB Radiation on the Properties of Nanocomposite Coatings

The aim of this study was to compare the effects of ultraviolet (UV) and electron beam (EB) radiation on the properties of cured nanocomposite coatings. Surface hardness increased with increasing radiation dosages (number of passes) for all samples. This was due to the increase in crosslinking with increasing radiation dosages. Pendulum hardness, gel content, and thumb twist results were analyzed to choose the appropriate curing dosage for both curing techniques. The selected dosages were then used to cure coatings for scratch and abrasion resistance tests. It was found that the UV curing produced coatings with better abrasion resistance, whereas EB curing was more suitable for producing scratch-resistant coatings.     

氧气在涂料光固化过程中的阻聚作用

介绍了光固化涂料在光固化过程中常见的空气中氧的阻聚作用，并从氧的光化学能量态着手，给出了氧在光聚合反应中的作用，并且探讨了几种抑制氧阻聚的方法及其机理。     

Adhesion of electron beam curable coatings on metal substrates

Electron beam (EB) curing is growing more and more important as a curing technique in industrial coatings, for example on substrates like wood, paper and plastics. However, commercial applications of EB curing on metal substrates are rather limited. The main technical cause for this originates from the insufficient adhesion and flexibility shown by EB cured coatings when applied on metal parts. However, adhesion and flexibility can be improved by various ways, in particular via a proper choice of the chemical pretreatment of the substrate. Adhesion of coatings, based on acrylated resins, on hot dipped galvanized steel can be improved dramatically by using a pretreatment, which is not usual in the current field of commercial coil coating. Pretreatments investigated show no relationship to surface tension, so it is highly probable that a chemical graft reaction, initiated by the electron beam, occurs at the interface of the coating and pretreatment layer. Experiments also show that cationic curing binder systems show promise with respect to adhesion and flexibility. Without optimizing the coating formulation (no wetting agents or other additives are used) relatively good adhesion and flexibility can be obtained on hot dipped galvanized steel, under both wet and dry conditions. The adhesion and flexibility are shown to be dependent on the radiation dose, and can be further improved by post-heating. In this case the polymer network gets the opportunity to relax internal stresses that are built up during the cure reaction.     

UV涂料在户外的应用

本文简述了辐射固化技术的发展历史，回顾了我国辐射固化涂料的发展状况，介绍了户外用UV涂料的特点、制备及国外最新进展。     

五金底材用UV固化涂料的配方设计

采用丙烯酸酯化的聚酯、二丙烯酸酯齐聚体、CAB551-0.01树脂为主要成膜物,以Irgacure184为光引发剂,研制成五金底材用UV固化涂料。讨论了预聚体结构、光引发剂及稀释剂等对涂层性能的影响,以及五金底材用UV固化涂料常见问题的解决。所配制涂料的综合性能良好,具有广阔的应用前景。     

Investigation of influence factors in electron beam curing of epoxy resins using a calorimetry technique

Because of the complexity of the electron beam (EB) curing process, current understanding of EB curing of polymer resins and composites is limited. This article describes an investigation of different factors affecting EB curing of epoxy resin such as dose rate, time interval between irradiation doses, moisture, and photoinitiator concentration using a calorimetry technique. Results show that higher dose rate resulted in a higher and faster temperature increment in the uncured resin samples, and thus a higher degree of cure. In the multiple‐step EB irradiation, a shorter time interval between irradiation doses resulted in higher temperature in the resin samples and therefore higher degree of cure. Results indicate that moisture could delay crosslinking reaction in the early stages of the cure reaction, but accelerates it later in the curing process. Given a reasonable percentage of photoinitiator, experiments confirmed that samples with higher photoinitiator concentration reach higher degree of cure under same EB irradiation conditions. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009     

低温固化环氧树脂粉末涂料的制备及性能研究

通过双螺杆挤出机用E-12型环氧树脂和YLT-118固化剂及其他助剂在90℃下熔融混合10 min,然后在平板硫化机上冷压3 min,最后经过粉碎机粉碎,过筛制得环氧粉末涂料。采用差示扫描量热法和红外光谱表征粉末涂料,并讨论了填颜料用量、固化条件等对涂料性能的影响。结果表明：该粉末涂料可实现低温固化,固化条件为120℃下恒温固化30 min;固化剂用量为环氧树脂的16.7%时,m（环氧树脂）∶m（填颜料）为150∶135时,得到的涂膜各项物理性能最好。