水性聚氨酯改性丙烯酸木器涂料

介绍水性聚氨酯分散体与丙烯酸类单体反应制备的具有核/壳结构的聚氨酯改性丙烯酸水性木器涂料配方,讨论了树脂、成膜助剂、蜡乳液等因素对涂料性能的影响。     

聚氨酯-聚醚-丙烯酸酯型亲水铝箔涂料的制备研究

介绍了一种聚氨酯-聚醚-丙烯酸酯型亲水铝箔涂料的制备方法,研究了引发剂的选择和用量对转化率的影响,考察了内交联剂以及聚氨酯-聚醚树脂与丙烯酸树脂的配比对涂料性能的影响。实验结果表明,在聚氨酯-聚醚树脂的制备中,用硝酸铈铵作引发剂,用二乙烯苯作内交联剂,在丙烯酸树脂的制备中,引发剂量为单体总质量的1.00%,聚氨酯-聚醚树脂与丙烯酸树脂的质量比为15∶1,制备的树脂转化率高,涂料亲水性能优异。     

高耐候、耐磨型聚氨酯风电叶片涂料的研究

采用丙烯酸树脂和聚酯多元醇树脂拼用的方法制备了高耐候、耐磨型聚氨酯风电叶片涂料。通过改变丙烯酸树脂与聚酯多元醇树脂质量比设计了5个不同配方,分别对其涂膜性能进行表征并与某进口样品对比。试验表明,随着丙烯酸树脂用量的增加,涂膜的耐候性能随之变好;而增加聚酯多元醇用量时,则产品的耐冲击性能、附着力及耐磨性变优。所研制产品的耐磨性和附着力要优于某进口产品,且耐候性能与某进口产品相当。     

高温环境下施工双组分丙烯酸聚氨酯涂料配方设计及漆膜病态的解决方案

采用几种不同酸值和羟值的丙烯酸树脂与HDI多异氰酸酯制备双组分丙烯酸聚氨酯涂料,研究在高温施工环境下树脂酸值和羟值对双组分聚氨酯涂料适用性和施工性能的影响,同时还探讨了如何消除施工中涂膜的病态,设计了该环境下专用的稀释剂配方。     

高固体分丙烯酸聚氨酯涂料的制备

采用低分子量聚酯齐聚物为作为丙烯酸树脂的增塑剂，配制高固体分丙酸聚氨酸涂料，不仅提高涂料的施工固体分，涂膜的性能也优异。介绍了羟基丙烯酸树脂，聚酯齐聚物的配方和制法，列举了高固体体分丙烯酸聚氨酯涂料配方及其在性能检测结果。     

快干型单组分聚氨酯涂料

选用有利于单组分聚氨酯涂料快干的丙烯酸树脂，制备了具有硬度高、快干性好的单组分聚氨酯涂料，讨论了丙烯酸树脂的性能、NCO值对最终徐膜性能的影响。     

丙烯酸聚氨酯涂料及其应用

该丙烯酸聚氨酯涂料系由含羟基的丙烯酸树脂和非泛黄型异氰酸酯组成的反应性涂料。本文叙述了羟基丙烯酸树脂的合成、产品技术指标和色漆的配制。重点讨论了软硬单体配比、官能单体配比、树脂分子量、NCO/OH配比和颜基比对涂层性能的影响。探讨了色漆配方中颜基比的最佳值和该涂料的触变性,以及依此设计的斑纹涂料在全塑照像机外壳涂装方面的应用。     

高装饰性聚氨酯家具涂料

研制了综合性能优异的高装饰性聚氨酯家具涂料。介绍了涂料用热固性丙烯酸树脂的配方和合成工艺，以及涂料的配制。列举了涂料的性能指标。讨论了影响涂料质量的各种因素。     

丙烯酸聚氨酯涂料的研制

采用多羟基丙烯酸树脂作为羟基组分,ＨＤＩ缩二脲多异氰酸酯作为固化剂,配制成丙烯酸聚氨酯摩托车涂料。该涂料既保持了丙烯酸涂料优异的硬度、丰满度、光泽、耐候性和耐化学品性,又具有良好的附着力、柔韧性和耐磨性。介绍了该涂料的配方及其配制。比较了几种摩托车涂料的性能。讨论了涂料用原料的选择     

紫外光固化纸张涂料的研制

研究合成了聚酯型丙烯酸聚氨酯.讨论了树脂的工艺配方、活性稀释剂、光敏剂的种类及数量对涂料性能的影响.将该涂料用于纸张、纸板、印刷品等,不仅固化速度快,而且性能完全符合要求.     

Polyester polyols for waterborne polyurethanes and hybrid dispersions

In this study, environmentally friendly polyester based polyurethane dispersions (PUDs) were synthesized using various combinations of isophthalic acid, adipid acid and maleic anhydride (IPA-AA-MA). A triangular empirical model was employed to optimize total number of experiments for optimal performance of polyurethane dispersions. In addition to PUDs, polyurethane/acrylate hybrid dispersions (PU/AC) were synthesized using graft copolymerization method to enhance the performance/properties of PUDs and for potential cost benefit.     

LCD用UV固化胶黏剂的研制

以聚酯多元醇、二异氰酸酯和丙烯酸羟乙酯为原料,合成聚氨酯丙烯酸预聚体,并在此基础上通过添加活性稀释单体、光引发剂等配制成UV固化胶黏剂。通过分析不同组分在LCD液晶灌注口密封及金属管脚固定的粘接性能影响,确定合成预聚体所需的聚酯多元醇种类及丙烯酸羟乙酯的合适用量,同时确定配胶所需活性稀释单体与光引发剂的合适用量。最后制得粘接性能好、耐候性能佳,可满足LCD产品生产工艺的性能要求的UV固化胶黏剂。     

Crockfastness of Polyacrylate Textile Pigment-Printing Binders: Effect of Binder Mechanical Properties and Adhesion to Fabric

The effectiveness of ethyl or butyl acrylate copolymerized with a small proportion of acrylonitrile in improving crockfastness of pigment-printed textile fabrics was determined. Crockfastness was demonstrated to be dependent upon mechanical resistance of the pigmented binder to rubbing and adhesion of the binder to fabric. Crockfastness on cotton fabrics correlated with tensile properties of binder films, ethyl acrylate being superior to butyl acrylate. The correlation failed with polyester fabric because adhesion was a more critical factor, the polyester fiber and yarn surfaces being smoother and more difficult to wet thermodynamically than cotton; in this case, butyl acrylate was superior to ethyl acrylate in adhesion and crockfastness. An analysis of surface free energies showed that better adhesion of the butyl acrylate copolymer to polyester was a consequence of lower total surface energy and lower polarity.     

高原铁路捣固车用聚氨酯涂料的研究

以聚酯树脂为基料，HDI三聚体为固化剂，制得了适合高原铁路捣固车使用的特种涂料。研究了不同树脂和固化剂对涂料耐候性、耐磨性和耐温变性的影响。通过FT-IR和TG等检测手段对涂料性能进行了表征。结果表明当选用聚酯树脂C为基料、HDI三聚体DN-90为固化剂时，制得的聚氨酯涂料耐人工加速老化时间可达2000h，涂膜磨耗量可降至0．038g，耐温变20个周期后，检测结果合格。且该涂料固化反应程度完全，热稳定性能好，各组分含量符合设计要求。     

醇酯型聚氨酯油墨连接料的研制

采用自制的不结晶型聚酯多元醇与含有侧链的扩链剂及异氰酸酯通过一步法反应制取醇酯型聚氨酯油墨连接料,分析了己二酸与间苯二甲酸二甲酯的物质的量比、聚酯多元醇的相对分子质量、扩链剂种类、R值、后熟化时间、溶剂配方对聚氨酯性能的影响。     

车用尼龙轮毂饰盖金属涂料的研制

以聚酯改性弹性聚氨酯树脂作为主要成膜物质,加入甲基异丁酮、环己酮、甲苯等助剂、溶剂以及铝粉、蜡等制备车用尼龙轮毂饰盖涂料。讨论树脂的选择、铝粉添加量、溶剂种类等对涂膜性能的影响。结果表明:该涂料附着力、耐蒸汽喷射、耐热性、耐冷凝水、热存放、冷存放、耐候性等都满足大众汽车标准。     

丙烯酸酯改性水性聚氨酯的合成研究

以聚酯、二羟甲基丙酸(DMPA)和甲苯-2,4-二异氰酸酯(TDI)等为主要原料,丙烯酸酯作为改性剂,通过对改性反应温度的时间、DMPA用量、R值、改性剂加入量和引发剂加入量的考查得出:当预聚温度和时间分别为70℃和4h,DMPA用量为5%,R值(nNCO/nOH)为1.15,单体加入量为5.7%,引发剂加入量为0.04%时,能制得外观和性能优良的改性水性聚氨酯乳液。     

The effect of ultraviolet‐curable water‐borne polyurethane acrylate binder concentration on the printing performance of synthetic leather

In this paper, synthetic leather samples were screen printed with pigmented pastes including two types of photoinitiators and three different concentrations of ultraviolet (UV)‐curable water‐borne polyurethane acrylate binder. The curing process was conducted under different combinations of lamps (gallium, mercury, gallium/mercury and gallium/gallium/mercury) at three power levels. Abrasion resistance, crock fastness, hardness and colour strength were investigated. Chemical changes in the clear and pigmented film structures because of UV curing were analysed by Fourier Transform‐infrared spectroscopy measurements. In hardness measurements, the highest hardness values were obtained with clear and pigmented formulations which have the highest solid content (57%). In colour measurements, higher K/S values were obtained in samples printed with the formulation having a binder concentration of 46%. Wet crock fastness values improved as the energy level increased during curing, and the highest values were obtained with a formulation which had a binder concentration of 57%. Greater amounts of binder in the formulations and increased amounts of energy applied to the surface during curing increased the hardness value of the prints, thus better abrasion resistance was obtained. Overall results suggested that the highest hardness, crock fastness and abrasion resistance values were obtained with the formulation with a binder concentration of 57%. However, for ease of application, printing efficiency and colour strength, the formulation with a binder concentration of 46% is recommended for printing, and curing under consecutive passes with gallium and mercury lamps at 120 W/cm is proposed in terms of energy efficiency and printing performance.     

分子结构中碳碳双键对水性UV聚氨酯分散体的影响

采用异佛尔酮二异氰酸酯(IPDI)、聚酯二元醇(聚己二酸-1,4丁二醇酯)(PBA)为主要原料合成了环氧改性的、固体分约为50%的水性紫外光固化聚氨酯分散体(PUD)。通过预聚物中聚氨酯分子末端的—NCO基团与丙烯酸羟丙酯(HPA)和季戊四醇三丙烯酸酯(PETA)上的羟基发生反应,从而引入碳碳双键,使PUD具备紫外光固化的性能。研究了水性UV分散体的碳碳双键对水性聚氨酯的拉伸强度、硬度、粒径等性能方面的影响,同时对涂膜进行动态力学性能测试(DMA)和断面结构表征(SEM)。结果表明:双键含量增加,UV涂料的拉伸强度和硬度增大,分散体和涂料的其他性能基本不变;DMA测试表明随着双键含量的减小,软段的T_g(s)移向低温,硬段的T_g(h)移向高温,相分离趋于完全;SEM测试表明树脂的交联程度越大,抵抗断裂的程度也越大。     

Photocuring of acrylate oligomers containing pentabromo benzylacrylate as flame‐retarding monomer and properties of cured films

Photocuring of formulations containing polyurethane and unsaturated polyester acrylate oligomers and a flame‐retarding (FR) monomer, that is, pentabromo benzylacrylate, with various α‐cleavage–type photoinitiators were studied. The effects of each photoinitiator on photocuring efficiency in both the presence and the absence of the FR monomer were examined. The flame retardancy and both physical and mechanical properties of the cured films were also investigated. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 1181–1189, 2002