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Jiangyin Dongli New Materials Technology Co., Ltd.
Founded in 2018, Jiangyin Dongli New Materials Technology Co., Ltd. specializes in the comprehensive development and manufacturing of high-performance fiber composite materials. We are China Carbon Fiber Construction Engineering Parts Suppliers and Wholesale Carbon Fiber Construction Engineering Parts Exporter. Located in a 32,000-square-meter industrial complex, the company features precision-controlled production environments, including climate-regulated workshops and 100,000-grade purification zones.
As a one-stop factory with full process control, we integrate material innovation with engineering expertise to serve industries such as aerospace, automotive and sports equipment development. Our capabilities include the R&D and production of high-performance fiber fabrics through weaving and prepreg processes, as well as composite products utilizing autoclave, RTM, RMCP, PCM, WCM, and spraying technologies.
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Carbon Fiber Construction Engineering Parts Industry knowledge

When designing special-shaped parts for carbon fiber construction projects, how can we balance their unique shape and structural mechanical properties to ensure that they are safe and stable under complex stress conditions? ​

Carbon fiber materials are increasingly being integrated into the construction field with a series of excellent properties. Its high strength allows carbon fiber to withstand huge external forces without being easily deformed or damaged, providing solid and reliable support for building structures. The advantage of low density not only reduces the overall weight of the building and reduces the cost of infrastructure construction, but also improves the seismic performance of the building to a certain extent. The excellent corrosion resistance enables carbon fiber to maintain stable physical and chemical properties in the face of various harsh environments, extending the service life of the building. Especially in the design and manufacture of special-shaped parts, carbon fiber has shown incomparable advantages. Compared with traditional building materials, it can break through the bottleneck of shape shaping and achieve complex shapes that are difficult to achieve with traditional materials. We focus on the comprehensive development and production of high-performance fiber composite materials, and have accumulated profound technical background and rich practical experience in the application of carbon fiber. Its skilled weaving and prepreg processes can skillfully shape carbon fiber into various unique shapes. Whether it is a smooth curve like flowing water or a sharp corner with clear edges and corners, carbon fiber can be perfectly presented, accurately meeting the bold creativity and imagination of architects for the appearance of the building, adding a unique artistic charm to the building, making it a beautiful landscape in the city. ​

Behind the unique shape, there are often complex stress conditions. During its long service life, the building will continue to be subjected to forces from all directions. Wind force, as a common and variable external force, its size and direction will continue to change with changes in weather and environment. In strong wind weather, the force of wind on the building may reach a considerable level, which poses a severe test to the building structure, especially the special-shaped parts. Earthquake force is a more powerful and sudden destructive force. When an earthquake occurs, the violent vibration of the ground will be transmitted to the entire building structure through the building foundation. Due to its irregular shape, the stress situation of special-shaped parts becomes extremely complicated under the action of earthquake force. Gravity is a force that always exists. Although it is relatively stable, its distribution is also complex under the irregular shape of special-shaped parts. For special-shaped parts, their unique irregular shape makes the force distribution no longer uniform. Some local areas may be subjected to concentrated forces, resulting in highly concentrated stress in the parts; while other parts are in a complex stress state where multiple forces are intertwined. For example, in some special-shaped building exterior parts with unique shapes, the protruding parts may be subjected to a large concentrated wind force, while the connecting parts may be simultaneously affected by the combined effects of tension, pressure and shear force. In the design stage, it is particularly important to fully and deeply consider the structural mechanical properties, which is an important prerequisite for ensuring the safety and stability of special-shaped parts under complex stress environments. ​

In the process of optimizing design, the precise selection and reasonable configuration of materials play a decisive role. Dongli New Materials relies on its strong R&D and production capabilities and has a rich and diverse range of high-performance fiber composite materials to choose from. The company's engineers can accurately plan the direction and number of carbon fibers based on the specific force requirements of special-shaped parts in actual use, using advanced material mechanics knowledge and rich practical experience. When a certain part of a special-shaped part needs to withstand a large tensile force, engineers will specifically increase the number of carbon fiber layers and cleverly adjust the fiber direction to make it completely consistent with the tensile direction. In this way, the high strength advantage of carbon fiber can be fully utilized, greatly improving the ability of this part to resist tension. In the part that needs to withstand shear force, engineers will reasonably adjust the fiber laying angle through precise calculations and simulation analysis. Different laying angles will have a significant impact on the shear resistance of the material. The carefully designed laying angle can effectively improve the shear resistance of the material in this part and ensure the structural integrity of the special-shaped part under complex stress conditions. This precise material configuration method is like a "armor" tailored for special-shaped parts. While perfectly retaining its unique shape, it maximizes the overall structural mechanical properties, enabling it to operate stably under various complex working conditions. ​
The manufacturing process also has a decisive influence on the performance of carbon fiber construction engineering special-shaped parts.

As a one-stop factory with full process control capabilities, Jiangyin Dongli New Materials Technology Co., Ltd. has mastered a variety of advanced manufacturing technologies, providing a solid guarantee for the production of high-quality carbon fiber construction engineering special-shaped parts. Taking the autoclave technology as an example, in the production process, the prepreg must first be meticulously laid on a special mold according to the carefully designed layering method in the early stage. This process requires extremely high precision and patience. The laying position and angle of each layer of prepreg are directly related to the performance of the final product. After the laying is completed, the mold is placed in the autoclave together with the prepreg. Inside the autoclave, the special environment of high temperature and high pressure can promote the full flow of resin in the prepreg, evenly infiltrate each carbon fiber, and finally solidify and form. In this process, the fiber and resin are closely combined to form a composite material special-shaped part with high strength and good stability. Its internal structure is dense, and the interface bonding between the fiber and the resin is strong, which makes the special-shaped part have excellent mechanical properties. Let's look at the RTM (resin transfer molding) technology. This technology is to accurately place the prefabricated fiber preform in the mold cavity, and then inject the resin into the mold at a uniform speed through a precise injection system. During the injection process, the resin will fully penetrate into every tiny gap in the fiber preform under the action of pressure to ensure that the fiber and the resin are fully in contact and combined. After the resin is cured, a special-shaped part with complex shape and high precision can be obtained. Moreover, through the precise control of parameters such as injection pressure, temperature and resin formula, the performance and quality of the material can be effectively regulated to meet the diverse requirements of different projects for the performance of special-shaped parts. ​

In the design process, the connection problem between carbon fiber construction engineering special-shaped parts and the overall building structure cannot be ignored. The correct choice of connection method is directly related to whether the special-shaped parts can work firmly with the main structure, while avoiding excessive stress concentration at the connection, which in turn affects the safety and stability of the overall structure. Engineers need to select the most appropriate connection method based on the specific force characteristics of the special-shaped parts and the actual situation of the building structure after comprehensive analysis and weighing. Common methods include bonding, mechanical connection or a combination of the two. When using adhesive connections, high-performance adhesives are key. Dongli New Materials will select high-quality adhesives that have been rigorously tested and screened. These adhesives have high strength, good durability, and excellent compatibility with carbon fiber materials. During the construction process, engineers will precisely control the bonding process parameters, including the treatment of the bonding surface, the thickness and uniformity of the adhesive, the curing temperature and time, etc. Slight changes in each parameter may have an important impact on the bonding strength and durability. By strictly controlling these parameters, it is possible to ensure that the bonding part has sufficient strength and stability so that the special-shaped parts are closely connected to the main structure. In terms of mechanical connection, it is crucial to reasonably design the size and shape of the connecting parts. The material of the connecting parts needs to have sufficient strength and toughness to withstand the various forces transmitted by the special-shaped parts when they are under stress. At the same time, the size and shape of the connecting parts should be optimized according to the specific conditions of the special-shaped parts and the main structure to ensure the reliability and stability of the connection, avoid stress concentration or looseness at the connection, and thus ensure the safe operation of the entire building structure. ​