Lightening and large-scale wind turbine blades are the development trend in the wind power field. In the future, as the benchmark price of wind power grids continues to decrease, the era of wind level prices is approaching, and cost pressures have also prompted the industry to look for new material alternatives. Traditional epoxy resin materials have been used on wind power blades for large-scale applications for more than 30 years, but with the rise of low-speed wind power development, fan blades are getting longer and longer, and the bottlenecks of epoxy resin blades in terms of price and technology have been appear. The advantages of polyurethane materials are: good mechanical properties, lower viscosity and better fluidity than epoxy resin; the exothermic peak is lower than epoxy resin, which can reduce the effect of resin exothermic heat on the foam core material; it can be better Combined with glass fiber, it has better long-term fatigue resistance. These advantages enable polyurethane materials to be made lighter and longer fan blades, bringing higher power generation efficiency and reducing power generation costs, so polyurethane blades have become a trend to replace some epoxy blades.
CQGJ is in a leading position in wind power yarns, and its products have been used by mainstream customers at home and abroad. It is a company's leading product. In order to further strengthen the advantages of wind power yarn products, CQGJ began to develop polyurethane yarns in 2009. Ten years of sharpening the sword, the CQGJ R & D Center and the COVESTRO R & D team worked together to systematically research the infiltrant formula, low-moisture process, and polyurethane testing technology. After conducting hundreds of tests, they finally developed a polyurethane wind blade special Yarn 467W. Following the 2016 Shanghai Glass Institute's use of CQGJ-produced polyurethane fabrics in a 39.5-meter infusion test at the Funing Plant, the world's first full polyurethane blade was produced. In 2018, the world's first set of main beams and webs used polyurethane resin 55.2m blades in Tieling, Liaoning After the successful hang-up, another significant progress was made in mid-April 2019. Time New Materials used CQGJ polyurethane fabric to inject the newly developed 2.2 MW world's longest new high-performance polyurethane resin system fan blades at the production plant in Zhuzhou Guangming. These batches of blades have been inspected and accepted in the field and realized batch delivery. Finally, they have been commercialized from polyurethane blade tests.
As a glass fiber manufacturer, CQGJ has always attached importance to new product development and is committed to providing customers with better cost-effective solutions for the industry. CQGJ recognizes that only through continuous technological innovation, it gradually forms its own core technology, uses core technology as a means to produce core products, and uses core products to re-derive product lines to form a competitive advantage for the enterprise and achieve "technical innovation-technological advantages -Core competitiveness-a new round of technological innovation ".
In the future, with the upgrade of TMII glass of CQGJ, the development of 468GS, 469LG, and 467W infiltration formulations, and the commissioning of the world's largest high-modulus production line of the F11 line, CQGJ wind power products will further enhance product performance, product quality, and production efficiency. Competitiveness.