四针状纳米ZnO/丙烯酸树脂复合多功能涂料

以丙烯酸树脂为基体,通过纳米微粒直接分散法,制备了四针状纳米ZnO/丙烯酸树脂复合材料。当硅烷偶联剂的用量为纳米ZnO的10%(质量分数)时,可获得ZnO微粒分散性好的复合材料,对该材料进行的红外吸收测定表明,复合体系的透射率随着纳米ZnO的加入急剧下降,具有良好的红外屏蔽性能,同时该涂料也表现出良好的抗菌及抗静电性能。     

Tetrapod-like nano-particle ZnO/acrylic resin composite and its multi-function property

Tetrapod-like nano-particle ZnO/acrylic resin composite was prepared by a direct dispersing method forming a multi-function coating. The composite with uniform distribution of nano-ZnO in the acrylic resin have both anti-electrostatic and antibacterial functions. The coatings can be used for plastic materials or others. The mechanisms of the electrostatic and antibacterial functions were also analyzed.     

改性纳米氧化锌对丙烯酸聚氨酯涂层防腐性能的影响

为了改善纳米ZnO在涂料中的分散性,以钛酸酯偶联剂对其进行改性。研究了丙烯酸聚氨酯清漆、含未改性纳米氧化锌的丙烯酸聚氨酯涂层和添加钛酸酯偶联剂改性后的纳米氧化锌的丙烯酸聚氨酯涂层的防腐蚀性能。结果表明,经过钛酸酯偶联剂改性的纳米ZnO其团聚现象明显消失,与涂料表现出良好的相容性,所得的复合涂层的抗渗透能力明显比清漆和含未改性纳米ZnO复合涂层强。改性纳米ZnO显著提高了丙烯酸聚氨酯涂料的防腐性能。     

Preparation and characteristics of a waterborne preventive stain coating material with organic-inorganic composites

With the goal of developing a waterborne coating material that prevents staining, organic-inorganic composites prepared from colloidal silica and two types of acrylic resin emulsions were investigated as exterior coatings. conventional acrylic resin emulsion and organic silane hybridized acrylic resin emulsion prepared by emulsion polymerization were mixed with colloidal silica to form organic-inorganic comiposite films. The addition of colloidal silica to emulsions yielded films with higher hydrophilicities, as indicated by lower water contact angles for these films in comparison to films without colloidal silica. The water contact angles of organic silane hybridized acrylic resin emulsion/colloidal silica films were lower than those of acrylic resin emulsion/colloidal silica films. Composite films containing colloidal silica particles smaller than 100 nm in diameter showed high hydrophilicities. Observations of the dispersed state of colloidal silicaparticles in organic-inorganic composite films by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) demonstrated that colloidal silica particles were densely aggregated on the film surface. Outdoor exposure tests of the coating materials prepared from organic silane hybridized acrylic resin and colloidal silica particles with diameters of 7.5 nm showed excellent stain resistance.     

聚酯丙烯酸热变色涂料的研究

叙述了聚酯丙烯酸树脂和热变色材料的制备方法，并将热变色材料分散于聚酯丙烯酸树脂中，制备出高性能的热变色涂料。结果表明：聚酯丙烯酸热变色涂料的性能优良，受热变色效果明显。     

乙二醇罐内壁涂料的制备及其应用

为储存PET树脂、聚酯等所用原材料乙二醇且保持其品质，采用丙烯酸树脂为基料，TiO2为颜料，制备了储存乙二醇用的内壁涂料，经这些材料的浸泡液进行紫外线透过率的测试的结果表明，该涂料对乙二醇的品质无影响，能使乙二醇储液保持优等品质量不变，在实际应用上也能达到优等品的品质要求，因此该涂料发展潜力极大。     

Fabrication of an epoxy graft poly(St-acrylate) composite latex and its functional properties as a steel coating

A novel method for preparing epoxy graft poly(St-acrylate) composite latex with high graft ratio has been devised. First, esterification was carried out between acrylic acid and an epoxy resin using the monomer as the solvent. The obtained sample, still in solution in the monomer, was emulsified to miniemulsion droplets together with other monomers. Finally, the epoxy graft acrylate composite latex was prepared by miniemulsion copolymerization. This technology will eliminate pollution arising from the organic solvent when solvent-borne systems are used. The enhanced graft ratio was confirmed by FTIR and ¹H NMR measurements. The results indicated that the acrylic monomer was grafted onto the epoxy chain. TEM showed the graft composite latex to have a spherical structure with diameter 100 nm. The adhesive performance and anti-corrosive properties on a steel substrate, as measured by salt-spray resistance, were maximized when 4.0% acrylic acid was added to the epoxy resin. Dynamic mechanical analysis (DMA) has been employed to test the damping properties of the composite latex coatings. It was interesting that the tan δ peak values of the coatings were as high as 2.15, clearly exceeding those of general damping materials. Our findings suggest great potential for the composite latex in the field of functional steel coatings.     

紫外光固化封底涂料的研制

研制了一种用于表面粗糙的水泥板、木板等建筑材料的快速封底处理的紫外光固化涂料,该涂料组成为:预聚物55份(质量份,下同)、稀释单体40份、光引发剂3份、助剂2份、填料35份。所得涂料流平性好,不需要添加流平剂,可形成均匀的涂层;其成膜固化速度快,固化膜具有较强的附着力,且耐酸性、耐碱性、耐盐性好;同时该涂料有较好的防沉降性、贮存稳定性和施工性。     

反应性丙烯酸酯制备常温无溶剂涂料

文章利用丙烯酸酯树脂预聚物与交联单体在引发剂和促进剂的作用下进行自由基聚合反应交联成膜,制备了一种低粘度,高固含量,表干时间短,低污染,硬度高,柔韧性好,附着力强,耐候性好的涂料。文中着重探讨了丙烯酸酯树脂预聚物的合成,并对涂膜性能进行了测试;找到了控制预聚物粘度的方法及涂料的适宜配方;可为丙烯酸类路标涂料的生产应用提供一定的借鉴。     

Preparation and characterization of weather resistant silicone/acrylic resin coatings

Preparation and characterization of weather resistant silicone/acrylic resin coatings were conducted. In order to prepare these coatings, a silicone/acrylic resin (KLD) was first prepared by an addition polymerization reaction of monomers, including n-butyl acrylate, methyl methacrylate, n-butyl methacrylate, and 3-methacryloxypropyltrimethoxysilane (MPTS). In the preparation of the silicone/acrylic resin, T_g of the acrylic copolymer was fixed at 40°C and the contents of MPTS were varied to be 10, 20, and 30 wt%. The weather resistant silicone/acrylic resin coatings were then prepared by blending the synthesized silicone/acrylic resin and TiO₂. The viscosity of the synthesized resin decreased with the content of MPTS, whereas the thermal stability at high temperature increased. The prepared coatings exhibited excellent adhesion to various substrates, and various physical properties of the coatings were satisfactory. The weatherability of the coatings was tested three ways: outdoor exposure test, Weather-Ometer (WOM), and QUV accelerated weatherability tester (QUV). The gloss retention, yellowness index difference, color difference, and lightness index difference were improved at high MPTS concentration. The coatings containing 30 wt% MPTS have especially good weather properties. Dept. of Chem. Eng., Yongin 449-728, Korea. Ansan 425-110, Korea.     

环氧改性丙烯酸涂料的研制

采用特定的催化剂，制得环氧改性丙烯酸树脂，由其配制的环氧改性丙烯酸涂料既可作为装饰性面漆，也可作为中涂漆。介绍了环氧改性丙烯酸树脂及其涂料的制法和性能指标。通过红外光谱表征了环氧改性丙烯酸树脂的组成和结构。讨论了诸种因素对涂料性能的影响。     

高光泽水性丙烯酸氨基烤漆的研制

通过选择水性丙烯酸树脂、氨基树脂等研制出高光泽水性丙烯酸氨基烤漆,并对影响水性丙烯酸氨基烤漆的主要因素进行了分析研究,探讨了水性丙烯酸树脂、氨基树脂、中和剂、助溶剂和润湿分散剂对涂料性能的影响。     

仿石灰石效果涂料的制备

利用中涂层、效果涂层和罩面层的复合方式,采用特殊的施工工具,制备了仿石灰石效果复合涂层。介绍了中涂漆、效果涂料和罩面清漆的配方及制备工艺,以及仿石灰石效果涂料的施工工艺。讨论了乳液用量,填料的种类及用量对中涂层初期抗裂性的影响,以及罩面清漆中丙烯酸树脂用量对涂层外观及耐水性的影响。     

“Effect of nano-ZnO particles on the corrosion behavior of alkyd-based waterborne coatings”

A nano-composite was formed by incorporating nano-ZnO in a specially developed alkyd-based waterborne coating to different loading levels. The nano-ZnO based composite coatings were applied on mild steel substrate by dipping. The coated panels were subjected to various test environments like salt-spray, humidity, UV and mechanical tests like scratch and abrasion. The improvement in electrochemical performance and mechanical properties of the composite coatings were evaluated using various analytical techniques. FTIR technique was used to investigate the interaction between nano-ZnO particles and the polymer functionalities. Differential scanning calorimetry (DSC) was done to study the curing behavior of nano-composite coatings. SEM and AFM were used to investigate dispersion of nano-ZnO particles and the changes in the surface behavior of the coatings before and after exposure to the test environment. The result showed that, with increase in the concentration of nano-ZnO there was an improvement in the corrosion resistance, UV resistance and mechanical properties of the coatings indicating the positive effect of addition of nano-ZnO particles in the coatings.     

Assessment of UV-permeability in nano-ZnO filled coatings via high throughput experimentation

The degree of UV protection afforded by nano-ZnO in a polyurethane/acrylic clear topcoat was investigated. The influence of nano-ZnO concentration and dry film thickness on the optical properties (e.g., UV permeability and visible transmittance) of the coating was probed using a library of 28 samples that were prepared by high throughput techniques. A model for predicting the UV permeability of nano-ZnO filled coatings was developed and the nano-ZnO loading condition required to block >99% UV radiation was determined to be 2.0 g/m². This model can be used to assist in the development of coatings and other polymeric systems embedded with nano-ZnO to protect the coating and underlying materials (i.e., substrate) from UV degradation.

水性汽车金属闪光底色漆的制备及性能

采用核壳结构的丙烯酸乳液作为成膜树脂,与非浮型水性铝粉颜料、各种涂料助剂等制备出一种汽车涂料用的水性金属闪光底色漆,介绍了水性金属闪光漆的配方及各项技术指标,讨论了成膜树脂、铝粉、助剂、成膜助剂及施工工艺的选择。结果表明,将核壳结构的丙烯酸乳液引入金属闪光体系,可以有效地减少金属漆中粒子的沉降,提高了体系的稳定性和各项涂膜性能。本项目研制的水性汽车金属闪光漆能满足合同规定的指标要求,而且具有良好的施工性能。     

表面处理作用对聚丙烯/四针状氧化锌晶须复合材料性能的影响

以聚丙烯为基体树脂,四针状氧化锌晶须为主要填充剂,制备具有抗静电性能的复合材料,本文将重点研究偶联剂的种类和用量对PP/T-ZnOw(100/10)复合体系性能的影响。力学性能研究表明,采用用量为1%的硅烷偶联剂JH-0174处理氧化锌晶须时,PP/T-ZnOw复合材料的力学性能达到最佳值;同时,阻率均有所下降且较大,PP电性能得到较大改善。微观结构分析表明,经偶联剂处理的复合材料中氧化锌晶须分布均匀且界面结合作用强。     

水性双组分氟丙烯酸—聚氨酯涂料的研制及性能测试

介绍了水性双组分氟丙烯酸-聚氨酯涂料所用原料及其预处理,水性双组分氟丙烯酸-聚氨酯涂料的羟基组分采用两步法合成:第一步合成了具有大分子表面活性剂性能的水性聚氨酯,在合成的过程中引入了双键和羟基组分;然后采用无皂乳液聚合的方法合成了以氟丙烯酸酯为核、聚氨酯为壳的水性树脂。并列举了采用该树脂与水性固化剂配合研制的清漆的性能指标,该清漆有着非常广泛的用途,讨论了影响涂料性能的各种因素。该双组分清漆水性含氟丙烯酸酯-聚氨酯清漆具有优异的综合性能。     

Chitosan-hybridized acrylic resins prepared in emulsion polymerizations and their application as interior finishing coatings

Chitosan was used to introduce formaldehyde adsorption abilities into an emulsion binder for interior finishing coatings. Chitosan-hybridized acrylic emulisions were prepared by two methods. To produce stable chitosan-hybridized acrylic emulsions, the pre-emulsion dropping method is superior to the monomer dropping method. The adsorption performances for fonnaldehyde in chitosan-hybridized acrylic resin films increased with increasing chitosan contents; the films also had adsorption abilities for hydrogen sulfide and ammonia. Tensile strengths and elongation at breaking points decreased with increasing chitosan contents. Interior finishing coatings made from chitosan-hybridized acrylic resin emulsions have the qualities necessary for an interior finishing coating and showed excellent adsorption abilities for formaldehyde.     

硝基快干汽车修补漆的制备

通过试验,用1/2s硝酸纤维素溶液和热塑性丙烯酸树脂制备硝基快干汽车修补漆,讨论了二者比例、氨基树脂、增塑剂和有机溶剂等对涂料性能的影响。结果表明,当1/2s硝酸纤维素溶液和热塑性丙烯酸树脂比例为38∶39,丁基化三聚氰胺甲醛树脂添加量为4.5%,邻苯二甲酸二丁酯添加量为3%,有机溶剂选择恰当时,该硝基涂料的综合性能良好。