聚氨酯透明防火涂料

研究了聚氨酯透明膨胀型防火涂料的配方及性能,探讨了发泡剂,脱水成炭催化剂,成炭剂三者的配比及用量对防火涂料性能的影响。     

塑料表面用防火涂料的研制及应用

通过对基材表面处理、调整涂料溶剂体系等措施，研制出一种防火性能优异、适用于塑料制品表面的超薄型防火涂料。讨论了其防火机理，介绍了其在塑料板材、复合管材上的应用。     

超支化聚氨酯钢结构防火涂料的研制

首先以二乙醇胺(DA)、甲基丙烯酸甲酯(MMA)和季戊四醇(PER)为原料合成端羟基超支化聚合物(PM-2),然后以四溴双酚A(TBA)与甲苯-2,4-二异氰酸酯(TDI)为原料合成异氰酸基封端的含溴单体(TBA-TDI)。最后用TBA-TDI上的异氰酸根与PM-2进行反应,得到含异氰酸根的阻燃型超支化聚合物(PM-TBA-TDI)。以PM-TBA-TDI、聚磷酸铵、三聚氰胺、季戊四醇、氯化石蜡、氢氧化铝、三氧化二锑、硅灰石复配得到超支化聚氨酯钢结构防火涂料A组分,以羟基丙烯酸树脂为B组分,制得超支化聚氨酯钢结构防火涂料。     

塑料用环氧改性聚氨酯涂料的研制

通过实验制备一种用于塑料的聚氨酯涂料。以附着力为主要标准,确定了环氧改性聚氨酯涂料的最佳工艺条件。最后进行了红外光谱、热重分析和其他综合性能等测试。实验结果表明:最佳工艺条件为环氧树脂加入量8%(质量分数,下同),DOP加入量5%,反应时间35min,反应温度70℃;研制的环氧改性聚氨酯涂料对于塑料具有较高的力学强度,良好的附着力,较低的吸水率和较好的热稳定性。     

塑料真空镀膜用涂料的制备

本文对塑料真空镀膜用的涂料和溶剂进行了探索。发现用单组份聚氨酯、聚苯乙烯、聚甲基丙烯酸酯和三聚氰氨树脂复配出的涂料，用苯、三甲苯、重芳烃和乙二醇乙醚醋酸酯等配制的溶剂性能都能达到国外相应产品的性能，且有些方面独具特点。     

塑料用涂料

200912103 应用于塑料基材的溶剂型双组分聚氨酯柔感涂料[刊]／周荣华等∥电镀与涂饰．-2009，28（10）．-55-59     

ABS塑料用水性柔感涂料的研制

选用能赋予涂膜柔软触感的水性聚氨酯为成膜物质,研究了消泡剂、硅烷偶联剂、弹性粉、蜡分散体、氮丙啶交联剂和增稠剂等助剂的类型和用量对涂膜附着力、耐水性、耐划伤等性能的影响,制备了一种手感柔滑、光泽柔和、耐划伤性好、附着力优异的水性ABS塑料涂料。     

水性光固化聚氨酯在塑料涂料中的应用

详细阐述了传统光固化和水性光固化聚氯酯的化学原理以及在望料中的各种应用。     

用二苯基甲烷二异氰酸酯合成单组分聚氨酯防水涂料

介绍了用二苯基甲烷二异氰酸酯(MDI)合成单组分聚氨酯防水涂料,讨论了反应时间对预聚反应程度的影响、m(N-220):m(N-330)、预聚体中W(NC0)对涂料伸长率、拉伸强度的影响.并讨论了催化剂对涂料性能的影响及贮存稳定性等问题.实验结果表明预聚时间为4h,m(N-220):优(N-330)=8:1,涂料w(NC...     

有机硅改性端异氰酸酯基聚氨酯阻燃涂料的研制

以TDI和聚乙二醇为主要原料,通过单因素实验,获得了制备端异氰酸酯基聚氨酯预聚体的最佳工艺条件;并用有机硅对预聚体进行改性,获得聚氨酯阻燃涂料。最后进行了红外光谱、热重分析和其他综合性能等测试。实验结果表明:制备预聚体的最佳工艺条件为反应温度70℃,反应时间70min,TDI和聚乙二醇的最佳配比为NCO/OH=1.5:1(物质的量之比,下同);有机硅提高了涂膜的热稳定性;制备的聚氨酯阻燃涂料具有较高的力学性能,良好的化学稳定性和热稳定性。     

应用于塑料基材的溶剂型双组分聚氨酯柔感涂料

通过对树脂、助剂和固化剂进行筛选,获得了适用于塑料基材的溶剂型双组分聚氨酯柔感涂料配方。测试了涂膜的各项性能。结果表明,该双组分柔感涂料具有附着力佳、手感细腻滑爽、抗划伤力强以及优异的耐腐蚀等性能。讨论了柔感涂料施工过程中常见的问题及其解决办法。     

Sulfanilamide-conjugated polyurethane coating with enzymatically-switchable antimicrobial capability for leather finishing

Microbial deterioration of polyurethane (PU) leather coating continues to represent a significant challenge in maintaining the durability and hygiene of leather products. In the present study, model biocide sulfanilamide (SA) was covalently conjugated into PU backbone as chain extender, yielding a novel PU with enzymatically-switchable antimicrobial capability as leather-finishing material. The anticipated structure of the conjugate was evidenced by ultraviolet spectroscopy, high-performance liquid chromatography, Fourier transform infrared spectroscopy, ¹H nuclear magnetic resonance spectroscopy and differential scanning calorimetry, respectively. In the presence of urease, a representative hydrolase derived from one microbial species prevalent on leather coating, such SA-conjugated PU coating was found to release free SA by urease-catalyzed cleavage of urea linkages. These regenerated SA molecules still exhibited bacteriostatic efficiency as pristine ones, against Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and Micrococcus luteus. When incubated without urease however, the coating displayed such substantially high resistance against hydrolysis that it maintained structural integrity throughout the incubation period. Furthermore, cell culture assay revealed that the SA-conjugated PU coating supported attachment and proliferation of normal human dermal fibroblasts, indicating a dermis-friendly feature. According to these results, the enzymatically-responsive PU designed in this study has great potential as an ideal leather-finishing material, which is capable of providing efficient protection against microbial deterioration while minimizing undesirable side effects associated with biocide abuse.     

无机添加型阻燃剂对聚氨酯阻燃涂料性能的影响

通过正交实验和单因素实验,以涂膜的耐燃时间为依据,确定了制备聚氨酯阻燃涂料时,MDI和DL2000的最佳用量,适当的反应时间和反应温度,以及阻燃剂氢氧化镁和氢氧化吕的最佳添加量。对涂膜进行了扫描电镜和热重分析,对比检测了未添加阻燃剂的涂料和添加阻燃剂的涂料的各方面性能。结果表明,添加阻燃剂的聚氨酯阻燃涂料的热稳定性能良好,耐燃时间高,涂膜具有较高的机械强度、良好的附着力和耐水、耐酸碱性能。     

聚氨酯改性环氧富锌防腐涂料的制备

通过正交实验法,以涂膜的吸水率为依据,确定了制备聚氨酯改性环氧共聚物时,聚氨酯的最佳用量,适当的反应时间和反应温度,固化剂的最佳添加量;并通过浸泡腐蚀失重法,确定了锌粉的最佳含量。对涂膜进行了红外光谱、极化曲线和扫描电镜分析,对比检测了未改性环氧富锌防腐涂料、聚氨酯改性环氧富锌防腐涂料的各方面性能。结果表明,聚氨酯改性环氧富锌防腐涂料具有较高的机械强度、低吸水率、良好的附着力和耐化学腐蚀性能。     

高铁专线用混凝土桥梁聚氨酯防水涂料工艺研究

将聚醚多元醇与MOCA制成交联剂,采用甲苯二异氰酸酯(TDI)与聚醚多元醇制成异氰酸酯预聚体,制备双组分无溶剂高强型聚氨酯防水涂料。分析了预聚体的用量、填料类型与聚醚类型、聚醚多元醇的配比、异氰酸根含量(-NCO)对涂膜力学性能的作用。通过此方式所制备的防水涂料效果良好,可以满足高铁专线混凝土桥梁防水层的相关要求。     

Spray coating process variable and property analysis of UV-curable polyurethane acrylate coating on polycarbonate substrate

A series of spray coating experiments were conducted on an UV-curable, polyurethane-modified, acrylate-based coating formulation with the aim to control defects, coating thickness, and thickness variation. Statistical approaches including design of experiment, residual examination, analysis of variance, and t-test were used in designing the experiments and analyzing data. Viscosity of formulation, atomizing pressure, liquid feeding pressure, distance between nozzle and substrate, and travel speed of substrate were the process variables studied. The ranges of process variables that gave defect-free coating were identified and used in the subsequent experiments to determine process variables and interactions that had significant contribution to the changes in coating thickness and thickness variation. All process variables studied were found to have contribution to the change in coating thickness, but they showed no significant contribution to the variation of coating thickness. No interaction displayed significant contribution. Confirmation tests performed on extra samples prepared with varying coating thicknesses indicated a good agreement with the experimental results. Additional samples were tested for total transmittance, transmission haze, adhesion, surface roughness, hardness, scratch hardness, abrasion resistance, and durability to attack of car wash chemicals. Spray coated samples showed slight improvement in the total transmittance over the uncoated samples, while maintaining the transmission haze and exhibiting rougher surfaces. Only samples with thin coatings were found to possess sufficient adhesion to the substrate. These thin coatings gave improved hardness, scratch hardness, and durability to car wash attack to the level comparable to commercial coated polycarbonate headlamp lenses, whilst giving better abrasion resistance.     

室外用超薄钢结构防火涂料的研制

以小板燃烧法为评价方法,考察了不同树脂体系、P-C-N阻燃体系、防火颜填料等因素对涂层防火性能的影响规律.通过配方优化以及与自制防火面漆相复合,获得了综合性能佳的室外用超薄型钢结构防火涂料.该产品已通过了国家检验中心的检测,当涂层厚度为1.5mm时,防火时间达96min.