191不饱和聚酯胶粘剂的改性研究

不饱和聚酯在固化过程中 ,由于初级自由基与空气中的氧反应产生的新游离基不能引发聚合 ,故其表面发粘。为解决此问题 ,本文选用了烯丙基醚、液体石蜡和碱金属氧化物进行试验 ,结果表明 ,烯丙基醚可有效吸收氧气 ,从而消除氧的阻聚作用 ,加入了烯丙基醚的 191不饱和聚酯 ,30min可完全固化 。

聚酯酰胺胶粘剂的合成及性能的研究

本文叙述了以共聚酯和不同的聚酰胺为原料,在催化剂的存在下,通过大分子链之间的交换反应制取另一种新型聚合物——聚酯酰胺的方法。所得产品经红外光谱等方法测定,证明了这种交换反应的存在。

聚酯/聚醚型聚氨酯胶粘剂合成与性能研究

用不同的聚酯和聚醚为原料合成双组分聚氨酯胶粘剂 ,找到合成该胶粘剂的最佳工艺条件、工艺配方 ,考察了异氰酸酯及环氧树脂改性剂含量对胶粘剂机械性能的影响。实验结果表明 ,加入扩链剂可明显提高胶粘剂的机械强度 ;加入少量环氧树脂可明显提高胶粘剂的拉伸剪切强度 ,但使剥离强度降低了许多。

一种改善铝塑复合胶粘剂粘接性能的方法

通过在聚酯胶粘剂中使用改性有机硅偶联剂,可以改善着色铝箔与PVC的粘结性能。在聚酯胶粘剂中增粘剂氯醋树脂用量为20％,偶联剂用量为0.6％。

药品包装铝箱用聚酯热熔粘合剂的合成

本文叙述了药品包装铝箔用聚酯热熔粘合剂的两种合成方法及生产出的药品包装铝箔性能。

粘合剂、油墨与相关技术

200602232基于水性聚丙烯酸酯分散体的单组分胶粘封闭剂复合物及其应用；200602233聚酯胶粘剂及其聚酯膜-层压钢板；200602234耐摩擦性、光泽和润滑性均好的油墨助剂和水性油墨；200602235出墨稳定印迹牢固的喷印油墨及其喷墨记录法；200602236书写工具、印刷油墨或化妆品用长余辉磷光油墨组合物……

Verification of Applicability of the Polyurethane Adhesive Based on Castor Oil in the Manufacture of Glued Laminated Bamboo

The current concern with the environment promotes the development of new technologies for production with use of alternative materials, from renewable resources, and changes in production processes, having as main objective the reduction of environmental impact. One of the alternatives for cleaner production is the use of castor oil derivatives instead of non-renewable sources, such as adhesives based on PVA （polyvinyl acetate）, applied in the manufacturing process of glued laminated bamboo. Based on the versatility of the bamboo laminate and the castor oil, and from the perspective of sustainability, this study aims to contribute to the application of new materials and processes, used in the manufacturing industry, by proposing the use of the polyurethane adhesive based on castor oil for glued laminated bamboo manufacturing, which can later be used in the manufacture of several products. To verify the applicability of the polyurethane adhesive based on castor oil in the glued laminated bamboo manufacture, mechanical tests of traction and shearing of the glue sheet were performed in specimens of the said material, and the results were compared with the Cascorez 2590 and Waterbond adhesives. The results showed that the polyurethane adhesive based on castor oil, in the traction test, has superior performance than the Waterbond adhesive and slightly below than the Cascorez 2590 adhesive, but in the shear test, the polyurethane adhesive based on castor oil presented a slightly inferior performance than the other two adhesives used in the comparison.

专利介绍

室温固化耐高温型柔性环氧粘合剂 中国专利1546590(2004—11—17)。该粘合剂由粘合组分和固化组分组成，其中粘合组分又含有增韧组分、耐温组分和增塑剂，固化组分由主体固化剂和固化促进剂组成。固化促进剂为多种成分的混合物。粘合组分与固化组分分别制取，分别封装，使用时现场按比例混合调制。制取的环氧粘合剂具有极好的柔韧性，粘结强度高，室温下的抗冲强度不低于30MPa，且使用温度高，可在300℃下长期使用。