PCB Waste Turns into Grass-Planting Bricks with High Compressive Strength
Taiwan has the world’s largest printed circuit board (PCB) industry chain, generating more than 100,000 tons of PCB waste every year. It is a top priority to eliminate these wastes. Professor Li Youfeng of the Department of Civil Engineering of Taipei University of Technology and Distinguished Professor Zheng Dawei of the Institute of Resource Engineering, Assistant Professor Li Weihao used inorganic polymerization technology to solidify PCB waste to make grass-planted bricks and wall bricks with high compressive strength, which won the gold medal in the Invention Competition of the 2022 Taiwan Innovation Technology Expo.
Li Youfeng said that after the precious metals in the discarded PCB are recovered, the remaining components are glass fiber cloth and resin, and the polymer materials such as resin have been cross-linked and hardened, which is difficult to recover. Incineration will produce toxic waste gas, but it cannot be incinerated under the current environmental protection regulations. , The landfill treatment is expensive, and manufacturers can only stack a large amount of waste PCB powder.
Li Youfeng, who is also a supervisor of the Taiwan Composite Materials (FRP) Industry Association, found that the processing principle of PCB waste is similar to that of FRP waste by adding Controllable Low Strength Concrete (CLSM). It can realize the goal of circular economy and high-value products actively promoted by the government.
The Beijing University of Science and Technology team used the PCB waste and recycled glass powder provided by Jialong Technology as additives, added inorganic polymerization raw materials, such as coal-fired fly ash produced by thermal power generation, blast furnace furnace stone powder, a by-product of the iron and steel industry, etc., and then added alkaline The solution is mixed, and after a year of repeated tests, the optimal ratio of the amount of PCB added can be found, which can be made into grass-planted bricks for permeable pavement. The wall tiles, or 3D printed as seats, potted plants, umbrella stands, etc., are widely used.
In addition, Zhong Mingan, an assistant professor at the Department of Electronic Engineering of Beijing University of Science and Technology, found that most cars with automatic driving assistance systems on the market are currently expensive, and general family scooters often lack automatic driving assistance systems, or system safety features are insufficient.
Zhong Mingyu has designed a modular device and method that can improve the safety function of automatic driving of vehicles. Using the connector design with vehicle safety level, the self-driving computer module with lack of safety function or insufficient safety level can be combined with high-functional safety design. The modules are connected in series, making the overall system an autonomous vehicle system with high-speed transmission, high computing power, and high safety level, thereby ensuring the driving safety of everyone, and won the silver medal in the 2022 Taiwan Innovation Technology Expo Invention Competition.
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Shenzhen Wonderful Technology Co., Ltd. is China’s top model and small batch circuit board manufacturer.
The company targets precision circuit board samples and small batches as the main target market. Since its establishment, it has adhered to the development concept of good quality and important reputation.
Invest huge sums of money to introduce advanced equipment, strictly regulate the operating standards and QC standards for incoming and outgoing materials, to ensure that the shipped products reach Seiko quality.
The self-developed ERP management system can realize the whole process of paperless operations such as online ordering, online payment, online production progress query, online logistics tracking, and online statistical report production, which greatly improves work efficiency.
It ensures that each order can be shipped quickly. After more than ten years of development, the company’s products and services have been well received by the market.
As well as the opening of an electronic component mall, integrated circuits, semiconductors, resistors, capacitors and other products are sold.
The company’s scale is developing rapidly, and the sample and small batch shipment capacity reaches 500 models/day.
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