分别以乙二醇、三羟甲基丙烷和季戊四醇为起始剂，经ε-己内酯开环聚合制备了一系列聚己内酯多元醇。探讨了反应温度、时间和催化剂等因素对合成反应的影响，并采用红外光谱（ FT-IR）、羟值滴定、凝胶渗透色谱（ GPC）对聚己内酯多元醇进行了表征。结果表明，以无水乙酸锌为催化剂，且用量为己内酯单体摩尔分数的0?2％，在温度120℃条件下反应3～4 h，制备的多元醇为理想的聚己内酯多元醇，相对分子质量与设计值一致，而且具有相对分子质量分布窄、成本低的特点。

The polycaprolactone polyols were preparaed by ε-caprolactone ring-opening polymerization using ethylene glycol, trimethylolpropane, pentaerythritol as the initiators. The factors of reaction temperature, time and catalyst on synthesis reaction were studied and polycaprolactone polyols were characterized by IR, hydroxyl value ti-tration and GPC. The results showed that products were ideal polycaprolactone polyols which the anhydrous zinc ac-etate in an amount of 0?2% mole fraction of caprolactone monomer as catalyst, reaction temperature 120℃ and the reaction time 3~4 h. Relative molecular mass was consistent with the design value. The target products had a nar-row relatively molecular weight distribution and low cost.

介绍了一种双组分聚氨酯人造草背胶的制备方法，以聚醚多元醇、异氰酸酯为主体原料，3，3′-二氯-4，4′-二氨基二苯基甲烷（MOCA）为扩链剂，研究了不同聚醚多元醇质量比、扩链剂用量、异氰酸酯质量比、异氰酸酯指数对人造草背胶操作时间、脱粘时间及力学性能的影响。结果表明，当异氰酸根指数为0.99，A组分中聚醚多元醇MN-3050与DL-1000质量份数分别为80、20，A组分中扩链剂MOCA用量为4份，B组分中MDI-50与PM-200质量比为1∶1，当A、B组分按质量比2∶1混合时，操作时间及脱粘时间最佳，人造草背胶的综合力学性能达到最好。

A new kind of preparation method of two-component polyurethane adhesive of artificial grass was in-troduced, the main raw materials were polyether polyol and isocyanate, and MOCA as the chain extender. Influ-ence of mass ratio of different polyethers, chain extender dosage, mass ratio of isocyanates and isocyanate index on the operation time, debonding time and mechanical properties were studied. The results showed that the operation time,debonding time and comprehensive mechanical properties were the best when the isocyanate index was 0?99, mass fraction of MN-3050 and DL-1000 was 80 and 20 in group A, the mass of MOCA was 4 portions in component A, the mass ratio of MDI-50 and PM-200 in component B was 1∶1 and the mixtured mass ratio of component A and B was 2∶1 .

以混合聚醚多元醇和不同种类的二异氰酸酯为原料制备了预聚体,采用扩链剂和聚醚多元醇为交联剂,合成了一种双组分聚氨酯嵌缝胶。研究了预聚体中异氰酸酯种类、异氰酸根(NCO)含量、聚醚多元醇种类对涂膜力学性能的影响。结果表明,采用MDI-3051和自制聚醚为原料,NCO质量分数在6%时,所制备的嵌缝胶拉伸强度为1.87 MPa,断裂伸长率为983%,粘结强度为1.2 MPa,嵌缝胶性能优异,能满足客运专线桥梁混凝土桥面伸缩缝的技术要求。

The two-component polyurethane expansion joint were synthesized by the method of prepolymer based on mixed polyether polyols, diisocyanate and composite chain extenders. The effects of the type of isocya-nate,the percentage of NCO in prepolymer and the type of polyether polyols were discussed. The results showed that the properties of the obtained polyurethane expansion joint were excellent when raw materials were MDI-3051 , homemade polyether and the NCO content was 6%, while tensile-strength was 1.87 MPa, the elongation at break was 983% and the bond strength was 1.2 MPa. The expansion joint meets technical specification for concrete bridge deck of special passenger railway lines.

采用聚酯多元醇、发泡剂、表面活性剂等混合而成的组合料与异氰酸酯－聚酯多元醇的预聚物，经反应注射成型，制备聚氨酯发泡材料，考察了扩链剂 EG 的添加量对聚氨酯微孔材料结构与性能的影响。研究结果表明，随着 EG的引入，经过水解，材料的力学性能影响最小；聚氨酯软硬段的最高热失重温度均呈现升高趋势，聚氨酯的耐热性有了提高。

The composite materials mixed with polyesterpolyol , foaming agent, surface active agent etc.and the prepolymer of isocya-nate -polyesterpolyol were made into polyurethane foaming materials through reaction injection moulding .The influence of additive a-mount of chain extender EG on the structure and property of polyurethane cellular material was investigated .The research result shows that with the introduction of EG, the mechanical property of materials has least influence through hydrolysis , that the highest heat tem-perature of the soft and hard segments of polyurethane tends to increase and that heat endurance of polyurethane increases .

以聚酯多元醇和二苯基甲烷二异氰酸酯(MDI)为主要原料,采用半预聚物法制备了邵A硬度为60~90A的聚氨酯弹性体.考察了聚酯多元醇、硬段含量、扩链剂用量及固化温度对聚氨酯弹性体性能的影响.所制弹性体具有良好的耐溶剂性能、力学性能和切削加工等性能,可用于丝网印刷胶刮.

The polyurethane elastomer whose hardness ranges from shore A 60~90 was synthesized using half pre-polymerization method by self-made polyester glycol and methylene diphenyl diisocyanate ( MDI ) as the main raw materials.The influence of the polyester polyol , hard segment content;extender amount and curing tempera-ture was investigated .The polyurethane elastomer for the use of screen printing scraping tablet had good perform -ances of excellent solvent resistance , mechanical properties , cutting machining properties , etc.