Breakthrough in Industrialization of Waterborne Polyurethane Adhesives

On April 20, the industrialized preparation technology of water-based polyurethane adhesives jointly developed by the Fujian Institute of Research on the Structure of Matter, Fujian Chuangxin Science and Technology Development Co., Ltd., and Zhongke Huayu (Fujian) Science and Technology Development Co., Ltd. passed six Chinese Academy of Sciences, Expert group identification including academicians of the Chinese Academy of Engineering. The experts evaluated this industrialized technology with independent intellectual property rights as a successful example of the transformation of the results of the integration of government, industry, and research. At present, all performance indicators of the products meet the requirements for actual shoe production. The performance of the products meets or exceeds that of similar foreign products and can completely replace imported products.

After more than ten years of research and engineering application, this achievement has formed a batch process technology for batch tonnage waterborne polyurethane shoe adhesives with independent intellectual property rights. It is an annual output of 10,000 tons and 100,000 tons waterborne polyurethane adhesives. Adhesive production line construction provides reliable technical support. The research and development unit established the research method of waterborne polyurethane resin, realized the control of different performance indexes of waterborne polyurethane resin, and can design and analyze the ratio of rapid polymer experiment. They took the lead in developing domestic sulfonate-based hydrophilic chain extenders suitable for the synthesis of water-borne polyurethanes, realizing the localization of raw materials, achieving the performance of similar international product targets, and at the same time developing successful dehydration technology for waterborne polyurethanes.

In addition, researchers have also successfully developed water-dispersed self-emulsification technology for waterborne polyurethanes with high resin content and low consistency, and prepared waterborne polyurethane products that incorporate multiple excellent performance indicators for shoe sole bonding, suitable for existing ones. Solvent-based adhesive shoe production line.

According to the experts of the appraisal committee, the new achievements achieved the control of chemical reactions during the generation of prepolymers and the growth of chains, and the degree of polymer cross-linking was obtained, successfully solving the problem of concentrated heat release in large-scale production. Complete sets of large-scale production technology, built an annual output of 10,000 tons of industrial production devices, to achieve a stable mass production.

Lin Jinxiang, chairman of Zhongke Huayu (Fujian) Technology Development Co., Ltd., told reporters that the current tonnage of industrial production facilities is stable and has the conditions for further construction of large-scale industrial production facilities. The technical achievements can provide scientific and technological support for cultivating and developing strategic emerging industries such as energy conservation and environmental protection, breaking technical barriers to foreign trade, and improving the core competitiveness of the footwear industry.

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