Innovation Products of China's Composite Material Industry in 2021

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Innovation Products of China's Composite Material Industry in 2021

 

Although there is an epidemic, it still cannot stop mankind's continuous innovation. After overcoming many difficulties and repeated research and careful decision of experts, the innovative products of China's composite industry finally stand out in 2021. Among them, 2 award-winning products in raw materials, 7 award-winning products in application and 2 products in technology and equipment won the title of innovative product award of the 17th China composite exhibition JEC.

Now let's share with you some of them.

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Raw materials

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Product Name: low dielectric and high transmittance polyimide fiber composite

 

This product takes the high-strength and high modulus polyimide (PI) fiber which is the first to achieve independent technological breakthrough and Engineering in China as the reinforcement, takes epoxy and cyanate ester resin as the matrix, makes full use of the characteristics of light weight, high strength, low dielectric and high wave transmission of PI fiber, combined with the excellent dielectric properties of the resin, so that the composite material has both excellent dielectric and wave transmission functions and certain structural bearing capacity, It provides a new design and material selection idea for the new generation of structure / wave transmission function integrated composites, which can play an important role in aircraft radome, wave transmission skin, low loss circuit substrate and so on. The product has applied for 2 invention patents, of which 1 is authorized.For more details, pls contact us.

Innovation: material innovation. A new generation of structural / wave transmitting composites was developed with PI fiber as reinforcement for the first time.

Technological innovation: break through the interface optimization and molding technology, solve the process problems such as static electricity, wool and temperature and pressure matching in the composite molding process of prepreg processing, and the interlayer shear strength reaches 55MPa.

Performance improvement: the minimum dielectric constant can reach 3.2, the dielectric loss ≤ 0.01, and the density is about 1.3g/cm3.

At present, the exhibitor has cooperated with other research institutes and other units to carry out its application verification research in relevant structural / functional integrated components. After user trial, PI fiber composites have good comprehensive performance characteristics, and show a good application prospect in the field of advanced structural and functional integrated composites for aerospace.

 

Product Name: ultra high molecular weight polyethylene powder ATT-UHMWPE with easy dispersion and high interfacial adhesion

After interface modification, it has good dispersion and interface adhesion in a variety of resins, which greatly reduces the application threshold of the material and has been highly praised by customers.

Innovation: low temperature plasma interface treatment process.

The product has high polarity and interface adhesion, and can be fully infiltrated by various resins in molten state.

The problems of dispersion and adhesion are completely solved, and engineering plastics with high strength, high modulus and high wear resistance can be prepared.

At present, the product technology has authorized 9 relevant patents, including 3 invention patents and 6 utility model patents. The products have been used for special wear-resistant parts of aerospace materials, UPE reinforced polyurethane based high wear-resistant wire cutting guide rollers of solar wafer cutting production line, water lubricated bearings with polyurethane substrate for ocean going ships, POM modified and wear-resistant nylon seals of large coal mining groups, rubber sealed bearings on drilling sleeve rods of an oil enterprise, as well as other self-lubricating and high wear-resistant applications such as mine screens, mortar nozzles, oil seals, piston rings, valves and so on, The service life of terminal products has been improved by 2-5 times, which has been highly praised by users.For more details, pls contact us.

 

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Application

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Product Name: metal carbon composite profile wire and its stranded cable

Metal carbon composite profile wire and its stranded cable are resin based steel carbon composite materials with prestress developed by the exhibitor, which can be used for overhead conductor reinforcing core, submarine cable armor, catenary conductor, prestressed cable, conveyor belt framework, etc.

Through innovative composite materials to strengthen the core structure, improve its applicability, reliability and weather resistance;

Improve its economy through innovative manufacturing methods;

The high-temperature characteristics of the interface are strengthened by means of space shape, and the standard steel strand and carbon fiber composite mandrel are "controlled and supplemented";

By innovating the whole process flexible design and manufacturing technology of products, the raw materials and manufacturing costs have been reduced by more than 40%.

The invention patents of the technology and structure have been authorized, and the invention patents of a series of application products have been announced. The key technologies have reached the world leading level and have broad market prospects.

Innovation: new structure. After precise design, the twisted reinforcing core adopts the shape wire stranding structure of spatial continuous curve, which improves the filling coefficient.

Process innovation: skillfully combine the prepreg, curing molding and profile stranding process, and realize the product design goal through the accurate control of process parameters.

Performance improvement: the strength of the product is twice that of ordinary steel strand. After winding it for 25d, heating it at 200 ℃, and applying 50kN radial pressure, there is no loss of strength; The modulus is more than 30% higher than that of ordinary carbon fiber core; The coefficient of linear expansion is much lower than that of ordinary steel core.

At present, products and technologies are in the stage of industrialization and popularization and application, and the market prospect is broad.

Product Name: Hot diaphragm preformed large curvature Z-section composite frame

This method combines the automatic placement of the preformed wire with the controllable heat transfer rate of the preformed wire on both sides, which solves the problem of the preformed wire on both sides of the diaphragm, and solves the problem that the preformed wire of the preformed layer is not controlled, It is a technological innovation in the field of composite material manufacturing in China, which provides a new way to realize engineering technology for the manufacturing and molding of similar structures.

This product can reduce the number of assembly parts of aircraft body composite structure, further improve the structural efficiency, eliminate human factors, ensure the quality reliability and stability, and improve the yield of civil aircraft composite structure.For more details, pls contact us.

Main technical parameters:

NDT: no delamination, inclusion, crack and other defects;

Contour deviation: ± 0.1mm;

Thickness tolerance: ± 10%.

At present, one invention patent has been applied for. This product is the first large-size and large curvature Z-shaped cross-section composite frame structure using automatic wire laying and hot diaphragm pre combination forming technology in China. It is the first engineering application verification of automatic forming technology for composite frame with complex structure.

Product Name: electric bicycle frame

This product is the world's first thermoplastic composite electric bicycle frame with closed tubular geometry, integrated battery compartment and motor support developed by using fluid melt and Engel 1700 duo injection molding machine. It has been injection molded at one time and mass production has been realized. Compared with the metal frame, the production cycle is greatly shortened from 2-3 days to 110 seconds, the delivery cycle is greatly shortened, and on-demand production is possible. The injection molding frame does not need welding, and the design freedom is higher. In the fully automated manufacturing process, functional integration and electronic and design film integration can be easily completed. The thermoplastic composite frame is completely recyclable and can be reused in other bicycle frames. The energy consumption required for production is more than 50% lower than that of aluminum.For more details, pls contact us.

At present, the product is in mass production scale. Buddy electric and other customers said that the V-frame is 100% recyclable and effectively reduces carbon emissions by 50%. It is a truly environment-friendly production technology.

Product Name: 12m high wind speed resistant roof lattice communication tower

Roof lattice communication tower is an all composite triangular lattice form independently designed by the research institute based on ANSI / tia-222-g specification. The tower is 12m high, the design wind speed is 300kph, the working wind speed is 83kph, the structural grade is II, the deformation, torsion and deflection angle are 1 °, the design service life is 30 years, and the total weight is 970kg. It can mount 6 GSM antennas (length 2500mm) + 3MW (diameter 0.66M) @ top, 12 RRU@TOP -3m。It has the characteristics of light weight, low transportation and installation cost, safety, low maintenance cost, excellent wave transmission performance and non-conductive body. The technical maturity has reached level 9 and is put into mass production. It has passed SGS third-party material performance test and obtained ROHS environmental protection certification.For more details, pls contact us.

At present, 9 patents have been applied for related technologies of the product, of which 5 have been authorized. It has formed 13 series products in 6 categories, including lattice tower and pole holding tower, which have been trial installed in Harbin, Mudanjiang, Inner Mongolia and other places and have been recognized by users.

Product Name: Sinoma 85.8 onshore all glass fiber large blade

Sinoma85. 8 blade matching 5 x~6. X MW onshore unit platform, suitable for class wind area, 6.5 m X MW series onshore wind turbine. It is a fully independently designed and developed all glass fiber land large blade, which adopts pultruded glass plate. The designed annual average wind speed is 8m / s, covering class II ~ III wind areas. The blade length is 85.8m, the maximum chord length is 4.88m, the pitch diameter is 3.2m, the projected area is 235m2, the blade weight is 25t, and the design life is 20 years.

Innovation: the blade family design concept is adopted, and the glass fiber epoxy resin material system, eggshell single-layer skin design structure type and glass fiber pultrusion plate girder are selected. Based on the low air density and complex environment, according to the operation characteristics of the wind farm, advanced anti-corrosion and lightning protection technologies are adopted to improve the adaptability of the blades.

The main beam adopts pultrusion process, the blade adopts automatic integrated pouring process, and the blade root adopts circumferential laying mode, which improves the production efficiency of large blades.

Obtain CGC type approval.

At present, this type of blade has been hung up. The launch of this product will promote the reasonable and continuous decline of onshore wind power kwh cost with innovative products and technologies, and effectively promote the development of China's wind power parity on the Internet.

Product Name: intelligent non-metallic composite continuous pipe

 

Intelligent non-metallic composite continuous pipe is a new type of intelligent composite continuous pipe first developed by the exhibitor in China. It can be used for many purposes, such as oil field rodless oil production, gas well drainage and gas production, oil well layered water injection, electric heating oil-liquid pipe transportation and so on. The unique fiber full infiltration technology and fiber layer thermal fusion technology are adopted to organically fuse the thermoplastic, thermoplastic infiltration fiber and related functional cables into a whole. The pipe body is mainly composed of intelligent inner lining layer, fiber reinforced layer and outer protective layer. The production process of this product is mature, and the whole production line adopts intelligent digital control process, which is friendly to the environment. Innovation: the preparation technology of thermoplastic resin prepreg fiber material, which greatly improves the infiltration effect and production efficiency, is one of the important core technologies. The hot fusion technology of prepreg winding or braided structural layer makes the exhibitor the first enterprise in China to develop all thermoplastic fiber reinforced pipe. Using intelligent layer processing technology to produce cables or optical cables, the elongation can reach 10 ~ 40%. The exhibitor has completely independent intellectual property rights and has obtained more than 10 invention patents and more than 20 utility model patents. The design capacity of the project is 200000 meters. In 2020, the output and supply volume will reach 60000 meters and 42000 meters respectively, and the sales volume will be nearly 20 million yuan. It has been successfully applied in Changqing Oilfield, Huabei Oilfield, Daqing Oilfield and other major oil and gas producing areas in China, and has been highly praised by users.For more details, pls contact us.

Product Name: domestic carbon fiber double snowmobile

The snowmobile project is one of the fastest and highly ornamental winter projects. With the strong support of the "science and technology Winter Olympics" project of the Ministry of science and technology and the winter sports management center of the State Administration of sports, the Institute of aerospace materials and technology led the establishment of a special research team. Through the joint cooperation of multiple units, the cross integration of multiple disciplines and the collaborative research of upstream and downstream of the industrial chain, it innovatively developed China's first domestic double snowmobile, filling a number of gaps in China, The wind resistance coefficient is reduced by more than 5% compared with similar international products, and the reliability and handling of the equipment are effectively improved, which meets the needs of the National Snow team for low wind resistance, high reliability, personalized customization and independent control of the equipment.

Innovation: integrated design technology of low wind resistance and high reliability shape and structure. The streamlined integrated design of rudder and body and targeted shape optimization are adopted. The wind resistance coefficient of snowmobile products is 8% lower than that of similar international products, meeting the requirements of strength and deformation.

Compressive strength of carbon fiber composites after impact ≥ 300mpa. The domestic T800 carbon fiber and high-strength glass fiber are mixed, and the multi-stage toughened high-performance resin is matched to realize the high performance and high impact resistance of the composite, which is more than twice the strength of the carbon fiber material of the international hand paste process.

High quality integral molding technology of complex wing body fusion structure. Through the design of combined die and the optimization of prepreg autoclave laying process, the high-quality integral molding of the complex wing body fusion structure of snowmobile is realized, and the reliability of equipment is improved.

Personalized customization technology of parts. Based on the physical characteristics of athletes, 3D printing of snowmobile parts such as push hands and pull rings can effectively improve the handling of equipment.

At present, 5 patents have been applied for and 4 patents are under preparation; Four snowmobiles (two for two and two for four) have been officially delivered to China's national snowmobile team.

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Technology and equipment

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Product Name: matbook multi-level material data system

 

Matbook multi-level material data system is a data system composed of multiple application scenarios and levels of data software, including material cloud platform management system, cloud database, desktop data software, embedded plug-ins and other modules. It is developed according to the concept of "data Lake - data background - Data console - Data plug-in - data terminal", forming a set of material data processing and pipeline system similar to "water source - water plant - faucet".

It is the first one at home and abroad to develop according to the concept of "data Lake - data background - Data middle desk - Data plug-in - data terminal", realize the four interface data acquisition ability of "website front end - Desktop end - R & D software end - mobile terminal", and provide data hierarchical charging download. It is a real industry shared database. It is not only a software, but also a digital ecosystem serving the material data industry chain. Based on the material database, develop the composite industry software and cloud platform, form the composite industry cloud, and provide a complete composite product R & D cloud solution (under development).

At present, four software copyright patents have been obtained, and several invention and utility model patents are being prepared and applied for. Won the bid of "high speed train composite material database and parametric modeling tool" project of CRRC Research Institute in November 2020; In May 2021, he won the bid for the project of "carbon fiber composite database software" of Shanghai carbon fiber composite Innovation Research Institute.

Product Name: carbon fiber composite material recycling system and reuse solution

The exhibitor independently developed the production technology and equipment for cracking and recycling of 1500 tons of CFRP waste per year, which can operate automatically and continuously, with low recycling energy consumption and high performance retention rate of recycled carbon fiber, and can deal with mixed waste with large size, thick wall, complex structure and multi materials. More than 600 tons of various types of CFRP waste have been recycled and treated for more than 100 domestic enterprises.

In terms of reuse, a series of mass production technologies and equipment have been developed, and two types of low-cost recycled carbon fiber products have been developed and produced: recycled carbon fiber non-woven felt series and recycled short carbon fiber particle series, which have been commercially applied and filled the domestic gap.

Innovation: advanced mass production recovery and treatment system for extracting carbon fiber from thick wall waste materials. Development and mass production technology of discontinuous regenerated carbon fiber thermoplastic sizing agent. Preparation technology of recycled carbon fiber felt reinforced thermoplastic resin sheet. Glass fiber / carbon fiber separation technology. Development of special crushing equipment for carbon fiber composites.

The technical equipment has applied for 15 patents, including 5 invention patents; Lead the formulation and promulgation of 3 group standards.

 

（Part source: China International Composite Materials Exhibition）