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"The polyurethane flexible foam developed by Liming Institute can be applied to seats, cushions and headrests of airplanes, trains, cars and other means of transportation due to its excellent characteristics. We have become the supplier of polyurethane for Yutong Bus T7 car seats and other interior parts. The sole supplier of raw materials, serving large-scale events such as the National Two Sessions and the Boao Forum for Asia." Zhao Xiuwen said.
According to reports, in order to realize the transformation of Yutong Bus T7 from ordinary interior decoration to environmentally friendly high-quality interior decoration, the company's polyurethane material development project combined a substance with a cavity structure. The hydrophobic cavity can envelope organic molecules and inhibit benzene. The volatilization of aldehydes and aldehydes reduced the total volatile organic compounds (TVOC) by 47%. They also combined the formulation technology of the low-odor quick-response system to make the product's foam odor level better than 3.0. After adopting this product, the passengers of Yutong buses said that they did not smell the smell when the windows were closed.
At the same time, the project team independently designed and synthesized a nitrogen-containing structural flame-retardant polyether polyol-polyurea polyol. The polyol does not contain halogen, achieves flame retardant effect through nitrogen element, does not contain bromine smoke and drips, has a small amount of combustion smoke, foam oxygen index of more than 28%, and smoke density of only 3.6, which meets the requirements of Yutong T7 for supply. The high-end positioning requirements of merchants.
It is worth mentioning that the project team has developed composite polyurethane memory foam technology. Using the self-designed polyether polyol with high ethylene oxide content as the main component, by screening the cell opening agent and matching the highly active foam stabilizer, they obtained a low temperature sensitive foam with a density of less than 55 kg/m3 and an oxygen index greater than 25%. memory foam. The memory foam has the characteristics of good shape memory, low dependence on index, non-sticky product, and fatigue resistance. At present, this product is widely used in China, which can improve the ride comfort of passengers.
"Flame-retardant and environmentally friendly high-performance polyurethane materials have been recognized by the industry. The project has declared 7 invention patents, 5 of which have been authorized, and won the third prize of the China Petroleum and Chemical Industry Federation Science and Technology Progress Award. In the past 3 years, the company has accumulated The sales of products are more than 17,000 tons, and the economic benefits are significant." Zhao Xiuwen said that Liming Institute will continue to carry out biomass products and technological research, and focus on the bottleneck of industry development, expand the application fields of high-end polyurethane materials such as heat-resistant and hydrophobic, and meet the needs of the market and The development needs of the industry.
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