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紫外光固化聚氨酯丙烯酸酯研究进展 总被引:4,自引:0,他引:4
综述丁紫外光(UV)固化聚氨酯丙烯酸酯的研究进展,主要包括:UV固化的聚氨酯丙烯酸酯预聚物;光固化有机/无机复合材料;水性UV固化聚氨酯丙烯酸酯和UV固化超支化聚氨酯丙烯酸酯。 相似文献
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从紫外光固化聚氨酯–丙烯酸酯(UV–PUA)涂料的固化原理着手,重点介绍了这种涂料近年来的一些发展状况。综述了几种新型紫外光固化聚氨酯–丙烯酸酯涂料——水分散型、双重固化型和改性型的研究进展,改性型包括有机硅/有机氟改性、纳米改性和超支化聚合改性等。对未来紫外光固化聚氨酯–丙烯酸酯涂料的研发方向提出了几点建议。 相似文献
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UV固化环氧丙烯酸酯/SiO2杂化涂料的制备与性能研究 总被引:3,自引:1,他引:2
以改性硅溶胶为无机组分,双酚A型环氧丙烯酸酯为有机组分,制备了UV同化环氧丙烯酸酯/SiO2杂化涂料.研究了改性硅溶胶制备条件及其用量对杂化涂料机械性能的影响,并用FT-IR和TG对固化膜进行了表征.结果表明改性硅溶胶能够同时提高体系的硬度和柔韧性,当n(MPTMS):n(HCI):n(TEOS)为0.75:0.024:1、改性硅溶胶与环氧丙烯酸酯的质量比为30:70时,涂膜机械性能最佳.TG分析结果表明改性硅溶胶的加入可以明显提高环氧丙烯酸酯的热稳定性. 相似文献
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《化学推进剂与高分子材料》2015,(6)
介绍了不同类型水性聚氨酯–丙烯酸酯(WPUA)的合成方法、性能以及合成条件对产品性能的影响;重点综述了向聚氨酯中引入丙烯酸酯基体后,UV固化WPUA的固化性能和应用性能的改善。所涉及的WPUA类型包括由不同聚氨酯和不同丙烯酸酯合成的WPUA、氟化WPUA、含硅WPUA、超支化WPUA等。简要介绍了WPUA的应用。 相似文献
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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。 相似文献
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Tri(acryloyloxyethyl)phosphate (TAEP) and di(acryloyloxyethyl)ethyl phosphate (DAEEP) were used as reactive‐type flame‐retardant monomers along with commercial epoxy acrylate and polyurethane acrylate oligomers in ultraviolet (UV)‐curable resins. The concentrations of the monomers were varied from 17 to 50 wt %. The addition of the monomers greatly reduced the viscosity of the oligomers and increased the photopolymerization rates of the resins. The flame retardancy and thermal degradation behavior of the UV‐cured films were investigated with the limiting oxygen index (LOI) and thermogravimetric analysis. The results showed that the thermal stability at high temperatures greater than 400°C and the LOI values of the UV‐cured resins, especially those containing epoxy acrylate, were largely improved by the addition of the monomers. The dynamic mechanical thermal properties of the UV‐cured films were also measured. The results showed that the crosslink density increased along with the concentrations of the monomers. However, the glass‐transition temperature decreased with an increasing concentration of DAEEP because of the reduction in the rigidity of the cured films, whereas the glass‐transition temperature increased with the concentration of TAEP because of the higher crosslink density of the cured films. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 185–194, 2005 相似文献
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以聚己内酯二醇、3-异氰酸酯基亚甲基-3,5,5-三甲基环己基异氰酸酯、丙烯酸羟乙酯为原料合成脂肪族聚氨酯二丙烯酸酯。实验结果表明,预聚物64份,四氢呋喃丙烯酸酯30份,γ-缩水甘油醚基丙基三甲氧基硅烷1份,1-羟基环己基苯基甲酮3份,纳米二氧化硅2份配制的UV胶,具有较佳的力学性能、耐热、耐湿热性能,综合性能接近loctite3106。 相似文献
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A novel UV‐curable epoxy acrylate resin containing arylene ether sulfone linkages: Preparation,characterization, and properties 下载免费PDF全文
UV‐curing processes are used in industrial applications because of their advantages such as high‐speed applications and solvent‐free formulations at ambient temperature. UV‐curable epoxy acrylate resins containing arylene ether sulfone linkages (EAAES) were synthesized through the condensation of bis(4‐chlorophenyl)sulphone and bisphenol‐A, followed by end‐caping of epichlorohydrin and subsequently acrylic acid. UV‐cured coatings were formulated with epoxy acrylates, reactive diluents such as pentaerythritol tri‐acrylate and pentaerythritol dia‐crylate and photoinitiator. Fourier transfer infrared, 1H NMR, and thermal gravimetrical analysis were employed to investigate the structures and thermal properties of the EAs films. The introduction of EAAES into epoxy acrylate substantially improves its thermal properties and thermo‐oxidative stability at high temperatures. In addition, the acrylate containing arylene ether sulfone linkages can also improve pencil hardness and chemical and solvent resistance of the epoxy acrylate. The obtained UV‐curable epoxy acrylate containing arylene ether sulfone linkages is promising as oligomer for UV‐curable coatings, inks, and adhesives in some high‐tech regions. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 41067. 相似文献
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通过环氧树脂改性以及多元醇内交联、六甲撑二异氰酸酯(HDI三聚体)交联改性、固化剂交联和紫外光交联等四重交联,并加入季戊四醇三丙烯酸酯(PETA)作为接枝化合物,合成了紫外光固化水性聚氨酯丙烯酸酯分散体(WPUD)。研究了环氧树脂改性以及PETA含量对漆膜性能的影响。结果表明,经过环氧改性,采用2.5%的HDI三聚体和13.6%的PETA合成的水性聚氨酯丙烯酸酯分散体,其漆膜吸水率为6.3%,耐丙酮擦洗360次,摆杆硬度0.79。所得漆膜达到或超过了溶剂型紫外光固化涂料的要求。 相似文献
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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。 相似文献
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乙烯基醚活性稀释剂在环氧丙烯酸树脂紫外光固化中的应用 总被引:2,自引:0,他引:2
运用红外光谱法研究环氧丙烯酸树脂紫外光固化过程中体系中双键的转化率,发现体系的粘度和活性稀释剂的反应活性同时影响固化过程中双键的转化率,当体系的粘度为Cp,活性稀释剂TMPTA/DVE-3(质量比)=1:1时,双键的转化率最大。当体系的粘度为Cp,活性稀释剂TMP-TA/(DVE-3 CHVE)(总质量比)=1:1时,双键的转化率最大。同时发现在,部分加入乙烯基醚的固化产物,具有优异的表面硬度和光泽度。 相似文献