Preparation of the Plywood Using UF Resin Modified with Blocked Isocyanate as Bonding Agent The study on friendly-environment urea-formaldehyde resin for wood-based panel 封闭异氰酸酯改性脲醛树脂制备胶合板环境友好型人造板用脲醛树脂胶粘剂合成研究
Water-borne polyurethane was prepared using isocyanate TDI, polyether ( N210), 1,4-Butanedio ( BDO), dimethylol propionic acid ( DMPA) and epoxy resin as main raw materials. 用甲苯二异氰酸酯(TDI)、聚醚多元醇(N210)、1,4-丁二醇(BDO)、二羟甲基丙酸(DMPA)和环氧树脂等为主要原料制备了水性聚氨酯。
Study on copolymerization of epoxy/ isocyanate resin 环氧/异氰酸酯树脂的共固化反应研究
This work employed isocyanate ( ISO)/ urea formaldehyde ( UF) resin system with different ratio to develop low-density rice husk/ wood composite. 采用异氰酸酯(ISO)改性的脲醛树脂胶制造低密度稻壳-木材复合材料。
And the influence of the functionality of the isocyanate prepolymer and the resin blend on cure speed, cure efficiency and film properties. 异氰酸酯和胺组分官能对凝胶时间、固化效率和聚脲涂层性能的影响。
The result was indicated that the effect of molecular weight of epoxy resin, structural of isocyanate prepolymer, neutralizer and neutralization, neutralizing temperature on water soluble of cation resin, stability of emulsion and film properties are marked. 实验结果表明:环氧树脂的分子量、异氰酸酯的结构、中和剂及中和工艺等对阳离子树脂的水溶性、乳液的稳定性及漆膜的性能影响较大。
An epoxy resin, an organic secondary amine, a polyamide and a blocked isocyanate are selected as main materials to synthesize polymer resin with solid content of 70%. 本实验采用环氧树脂、有机仲胺、聚酰胺和封闭异氰酸酯为主要原料,合成了固体分在70%的阳离子型环氧聚合物树脂;
Study of Low-density Rice Husk/ Wood Composites Bonded with Isocyanate Modified Urea Formaldehyde Resin 改性脲醛树脂胶低密度稻壳-木材复合材料制造工艺的研究
1-Carbamoyl imidazole was synthesized from imidazole and isocyanate, which is a good accelerator for curing single-package epoxy resin with dicyandiamide. 由咪唑和异氰酸酯合成了1-甲氨酰基咪唑。它是双氰胺固化的单组分环氧树脂中较好的促进剂。
Factors such as polyol, isocyanate, catalyst, index of isocyanate and thermoplastic resin, which affected the properties of PUR, were discussed. 分析了原料中的聚多元醇、异氰酸酯、催化剂、热塑性树脂对胶黏剂综合性能的影响。
The FTIR indicates that the reaction between isocyanate group-terminated PU prepolymer and the secondary hydroxy in epoxy resin has completed. Effect of PU content on viscosity of resin and the change of temperature in curing process was investigated. 红外光谱(FTIR)表明异氰酸酯封端的聚氨酯预聚体与环氧树脂中的仲羟基完全反应,同时考察了活性稀释剂用量对树脂黏度的影响及固化过程中温度的变化。
Based on the previous research works, this study investigated the bondability mechanism of isocyanate ( IC) resin with wood. 在课题的前期工作基础上,论文对异氰酸酯与木材的固化胶接机理做了进一步的研究和探索。