新型聚醚聚氨酯微孔弹性体的研制

采用新型低不饱和度聚醚多元醇、合适的丰预聚体，合成了可用于鞋底材料的聚醚型聚氨酯微孔弹性体材料。与聚酯型和传统聚醚型鞋料相比，该新型聚醚鞋料在低温性能和耐挠曲性能方面显示出较强的优势。     

改进低密度鞋底原液工艺性能的添加剂

研究了硅氧烷-聚醚共聚物匀泡剂的结构组成对低密度微孔聚氨酯鞋底料性能的影响，介绍了新型匀泡剂DC3042及DC3043在低密度鞋底料中作用，其中DC3042可改善泡孔结构及制品表现质量，而DC3043具有改善尺寸稳定性的作用，两种复配可得到满意的效果。还介绍了催化剂Dabdo1027及Dabco1028与现有催化剂复配使用可缩短脱模时间或延长乳白时间。     

聚氨酯鞋底料发展状况和展望

分析了聚氨酯鞋底料特别是聚醚型聚氨酯鞋料的发展前景和研发过程中应引起注意的问题，对比了EVA鞋中底与PU鞋中底的性能，介绍了国外该领域的发展现状以及国外几种聚醚型聚氨酯鞋底料。     

一种新型聚氨酯鞋底用聚醚的合成及应用

介绍了一种合成新型聚氨酯鞋底用聚醚的工艺步骤及其应用。     

新型聚醚型聚氨酯微孔弹性体鞋料的制备

采用新型聚醚多元醇为原料,制备出具有较好机械性能的微孔聚氨酯弹性体鞋底制品,并对影响其制品性能的主要因素进行了探讨。结果发现,三官能度聚醚及接枝聚合物聚醚多元醇的适量引入,可显著改善鞋底制品的物理机械性能。     

下游动态

亨斯迈推出新款用于鞋底聚醚材料亨斯迈近日宣布推出用于聚氨酯鞋底的聚醚材料DALTOPEDLITE,这款材料超级轻便、性价比高。这款DALTOPEDLITE聚醚材料非常适合生产高品质的聚氨酯休闲鞋底和儿童鞋底。它将与舒适度密切相关的低密度和良好的机械性能相结合。和喷射注模的EVA鞋底相比,     

聚醚型聚氨酯鞋底原液的研制

研究了聚醚型聚氨酯微孔弹性体鞋底原液的配方。讨论了影响弹性体性能的因素。制得了以水作发泡剂的聚醚型聚氨酯鞋底原液。     

新一代聚氨酯鞋底

陶氏化学公司研制出Voralast商标的聚醚和聚酯型聚氨酯。由此种聚氨酯制成的鞋底具有抗低温屈挠疲劳性、良好的穿着性和抗滑性，同时因其优良的流动性，易于模制成各种形状的鞋底。     

高硬度耐黄变PU—RIM材料的研究

介绍了用反应注射成型（RIM）方法制备高硬度耐黄变聚氨酯材料的配方及工艺条件,通过选择合适的聚醚多元醇、扩链剂、助剂和NCO含量,制备了综合性能良好的高硬度耐黄变聚氨酯材料。     

鞋底好料——新型聚酯多元醇

在美国,鞋底料除了大量进口外,用聚氨酯制作鞋底已大大增加。增长的原因主要是由于聚氨酯的性能好。用其他材料做鞋底,就很难做到既质轻、舒适,又耐磨、易于设计和加工。不断改善加工条件,扩大加工范围,有助于扩大聚氨酯用于制作鞋底的市场。用聚酯型聚氨酯做工作鞋和运动鞋的鞋底比用聚醚型聚氨酯好,因为聚酯型聚氨酯     

JSU喷涂聚脲弹性体及其研制

介绍了一种含有氨基甲酸酯的喷涂聚脲弹性体,通过引入氨基甲酸酯,降低了全聚脲体系的成本。描述了弹性体A,B组分的制备及其喷涂工艺流程,并对有关问题进行了讨论：A组分异氰酸根含量的确定,A,B组分粘度的匹配及胺基扩链剂对反应速度和制品性能的影响等。同时通过采用高活性聚醚和专用活性除水剂,以改善普通聚氨酯－聚脲体系的制品性能和喷涂工艺性能,JSU喷涂聚弹性体原料立足国内,成本相对低廉,在工程建设的许多领域有着广阔的应用前景。     

Poly(ether urethane) flexible cyanate ester resins: Synthesis,characterization, and performance in commercial epoxy and polyurethane applications

A poly(ether urethane)‐based cyanate ester resin (PEUCER) with a biphenyl polyether backbone obtained from polymeric 4,4′‐diphenylmethanediisocyanate, bisphenol A, polyether polyols of three different molecular weights, and cyanogen bromide was synthesized to obtain a polymer with better functional and physical properties, such as adhesion, flexibility, and thermal stability. The synthesis of the poly(ether urethane)‐based 4,4′‐(oxybiphenyl propane) cyanate ester involved three steps: the formation of the poly(ether urethane) NCO‐terminated prepolymer, the formation of the OH‐terminated poly (ether urethane) prepolymer (PEU–PP), and the esterification reaction of cyanate to produce PEUCER. PEUCER was cyclotrimerized to yield a triazine‐ring‐containing polymer, which possessed better adhesion at high temperatures and better impact resistance. PEU–PP and PEUCER were characterized with wet chemical analysis, spectral methods, and thermal methods. PEUCER showed better performance with respect to thermal and adhesion properties with a single‐part polyurethane lamination adhesive and also showed better performance as a toughening agent in a two‐part epoxy laminate system. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008     

硝酸酯增塑聚醚聚氨酯粘结剂的稳定研究

采用热失重 (TG)分析法研究了四类稳定剂对硝酸酯增塑聚醚聚氨酯的热氧稳定效果。吩噻嗪能很好地稳定聚醚聚氨酯粘结剂 ,但却促使硝酸酯分解。亚磷酸三苯酯单独使用时效果较差 ,但与其它种类的稳定剂混合使用能得到较好的效果。 2 ,6-二叔丁基 - 4 -甲基酚 (BHT)对硝酸酯和聚氨酯粘结剂均具有良好的稳定作用。稳定剂的稳定效果反映了各类稳定剂的作用机理 ,阻位酚类抗氧剂是比较明确的可用于推进剂中聚氨酯粘结剂的稳定剂     

Synthesis and properties of poly(acrylates-co-urethane) adhesives for low surface energy materials

The series of poly(acrylates-co-urethane) were synthesized based on the copolymerization between 2-hydroxyethyl acrylate terminated polyether (or polyester) urethane and acrylate monomers initiated by tri-n-butylborane (TBB). The effects of the soft segment of polyether (or polyester) urethane diacrylate on the copolymer properties were mainly discussed. Polyether (or polyester) urethane was relatively well dispersed in polyacrylate continuous phase, and was intended to aggregate with the increase of soft segment polarity and content. The adhesion to low surface energy materials and loss factor (tan δ) of copolymers were almost not influenced by the soft segment content, but decreased with the increase of soft segment polarity within the scope of the study. On the other hand, the working life of copolymers as adhesives was shortened with the increase of soft segment polarity, but prolonged with the increase of soft segment content. The copolymers with different structures of polyether (or polyester) urethane diacrylate were also shown to be good candidates as adhesives at room temperature.     

Polyurethane-polysiloxane interpenetrating polymer networks: 1. A polyether urethane-poly(dimethylsiloxane) system

The synthesis and properties of a polyether urethane network based on Adiprene L-100, of a poly(dimethylsiloxane) network and of nine interpenetrating polymer networks based on these polymers were investigated. To form the latter materials, the prepolymers were mixed and crosslinked simultaneously, but by separate mechanisms. Comparison of the network solubility parameters suggested marked incompatibility. Optical microscopy, dynamic mechanical analysis and the tensile testing indicated gross phase separation. From 90 to 50% of the polyether urethane component, this network was continuous and the poly(dimethylsiloxane) was present as dispersed phases. From 40 to 10% of the polyether urethane, the situation was reversed. Some degree of interchain mixing at phase boundaries was detected by ¹³C nuclear magnetic resonance spectroscopy.     

卤代聚醚多元醇的合成工艺

介绍了用于生产聚氨酯阻火泡沫用卤代聚醚多元醇的发展状况及合成工艺。     

水性聚氨酯合成及其在玻纤上的应用

介绍了用于玻璃纤维的表面处理时,对水性聚氨酯的特别要求.实验采用二异氰酸酯与聚醚二元醇、亲水扩链剂反应合成水性聚氨酯.讨论了合成工艺和亲水扩链剂加入量等因素对水性聚氨酯性能的影响.研究发现:调整合成工艺参数、亲水扩链剂加入量能实现溶液的亲水性、弱阴离子性与成膜性能于玻纤应用中的最佳统一.     

甲甙聚醚多元醇的合成及其应用

本文介绍了以淀粉、甲醇为原料与环氧丙烷一步法合成甲甙聚醚多元醇的工艺过程。由于甲甙聚醚中有甲基葡萄糖甙稳定的环状结构,因此由其合成的聚氨酯硬质泡沫塑料综合性能优异,应用前景广阔。     

Effect of molecular structure on the thermal aging properties of flexible urethane foams

A series of flexible urethane foams was formulated from diisocyanate-terminated polyether prepolymers, using both a polyether diol and an ethylenediamine tetraglycol as extenders. The long-term compression set characteristics and the compression deflection properties of these foams were studied. The swelling effect in a solvent, the free isocyanate content, and the role of a carbon black filler on the flexible urethane foam formulation were also evaluated. It was concluded that the total amount of diisocyanate used in the formulation, rather than a variation in the type of isocyanate, has the greatest influence on molecular structure.     

彩色聚氨酯防水涂料的制备

研究了二步法合成彩色聚氨酯双组份防水涂料的工艺条件及原料种类。原料中水分、反应温度、反应时间等因素对产品性能的影响。第一步 ,在 94kPa ,12 0℃～ 130℃条件下对聚醚进行脱水处理 ,冷却至 40℃时加入TDI,在 80℃～ 85℃条件下反应 2 0h～ 2 .5h ,制得 NCO含量为 4%～ 5 %的聚氨酯预聚体 ,即甲组份。第二步 ,色浆、填料、抗氧剂、紫外线吸收剂、扩链剂、固化剂、催化剂等在搅拌下混匀 ,在 94kPa ,45℃～5 0℃条件下脱泡处理 ,得到固体组份即乙组份