Zhifeng Liu

Study on Controlled Decomposition and Reuse of Waste Thermosetting Phenol Resin Based on Physical Methods

Various mechanical forces are used to promote the waste thermosetting phenol resin to produce the physical decomposition process. The molecular structure and physicochemical properties change, thus it obtains the reversible thermos plasticity and restore the processing performance. The paper proposes the regeneration principle based on physical methods, and smashing and regeneration experiments have been carried out. The optimized design for important factors of rotational speed, crushing time, feed, feed size and other parameters which impact crushing and regenerating effects has been carried out after experiments. Multivariate quadratic simulation equations are established and the order of significantly affecting the regeneration is determined.

Green Innovation Design Based on TRIZ Theory

The mesopic vision theory is used to study illumination properties of series of light sources, through the test of luminous spectrum and derivation based on the MOVE model, the results show that spectral luminous efficiency function Vmes(λ) is between traditional V(λ) and V′(λ) when the background brightness under mesopic vision condition, and the function of Vmes(λ) is changed with the different of light sources and background brightness. Based on human visual perception, the mesopic vision equivalent brightness can be calculated, which of HPS is lower than test brightness corrected by V(λ), but white LEDs and FL show opposite phenomena, and the different value between mesopic and photopic brightness presents reduce trend with rising of background brightness.

Research on Multi-Step Active Disassembly Method of Products Based on ADSM

The electronic products continue to upgrade at present, how to recycle the discarded electronic products is one of the key research of green design. The method of active disassembly using smart material (ADSM) has acquired widespread concerns. For some products, there is a long distance between the internal active disassembly structure and shell, it needs a long time to reach to the stimulation temperature of internal active disassembly structure, and therefore, it is difficult to completely disassemble these discarded electric products by one step. Moreover, it is not conducive to recycling the material if the components and parts of the disassembly products are mixed together, and the efficiency of disassembly is very low. This paper puts forward multi-step active disassembly method of products, it gives specific procedures of classifying steps according to the principle of division, and it proves the feasibility and superiority of the multi-step active disassembly method of products by referring to mobile model.

Redesign Method of Hydraulic Press’s Moving Beam

In order to achieve the goal of saving energy and materials, hydraulic sheet metal drawing press are selected as the research objects. Testing technologies are used to obtain hydraulic presss distribution ratio of forming crafts energy consumption so that the importance of moving beams structure optimization is revealed. Finite element method is used to comprehensively analyze the stress and displacement activity of original beam, mapping out the place of redundant material in the structure. Then, moving beams structure is optimized by the method of Topology Optimization, and got redesigned on this basis. Thus, the redesigned hydraulic presss moving beam not only satisfies the basic requirement of safety and reliability, but also reduces 433.19 t carbon emissions during the service life of hydraulic press.

Design methodology for active disassembly based on the decapitated head method

Due to the characteristic that shape memory materials can quickly return to their original shape and have large deformation, such materials can be used as the connection in active disassembly devices. However, existing active disassembly devices typically require two moulding steps and complicated machining processes that result in high manufacturing cost. The active disassembly device based on the proposed decapitated head method has only one moulding step and lower manufacturing cost. Its disassembly mode is local damage disassembly, which can decrease the active disassembly cost and improve disassembly efficiency. This paper describes the active disassembly theory and the design methodology based on the decapitated head method, and then analyses the design criteria and feasibility of this method with a real case study.

Life Cycle Assessment of Mechanical and Physical Method Used in Recycling Process of Waste Thermosetting Phenolic Laminated Plastic Based on GaBi Software

Based on software GaBi4.3, life cycle assessment method is used to analyze the abiotic depletion, energy consumption and environmental emissions of recycling process of 1kg waste thermosetting phenolic laminated plastic. This paper also takes advantage of CML2001 provided by GaBi to assess the environmental impacts through the recycling process. The result shows that the rank of environmental impact is: Regeneration> Molding > Crush; the main environmental impacts are global warming potential, acidification potential and eutrophication potential.

The Design of Small Vehicles Based on Virtual Reality Technology

Virtual Reality, Automobile Model, Ergonomics, Aesthetics Abstract. In the process of design development for vehicles, Virtual Reality (VR) technology is the inevitable trend in future. The paper explores the foundation of automobile model based on VR technology. The automobile ergonomic analysis in virtual environment and the aesthetic utilization of VR technology in automobile design are also discussed in paper.

Hard Thermosetting Polyurethane Plastic Degradable Test and its Influential Factors

Through the combined mechanical forces of sheer, friction and squeezing, the rigid polyurethane powder particles get certain plasticity. Based on the principles of mechanical and physical methods, an orthogonal test is designed, and then characterization analysis under conditions of different parameters is carried out through ATR-FTIR. The test indicates that when the rotate speed is 2400r/min, test time is 120min and inlet amount is 24g, the carbamic acid ester groups break down at the place of C-O bond and the cross-linked network structure is destroyed, then the best degradation effect is gained. This article provides theoretical basis for the recycle of thermosetting plastic.

The Application of Virtual Reality Technology in Product Design

The paper introduces the effects of virtual reality (VR) technology on product development and product design for improvement. By analyzing the design and development of baby stroller, the paper demonstrates the preparation of product design and its optimization, product exhibition and experience, the product process and manufacture by utilizing VR technology.

Experimental Study on the Recycling Technology of Waste Thermosetting Phenolic Resin Based on Mechanical and Physical Method

Propose a recycling technology of waste thermosetting phenolic resin based on mechanical and physical method,use the range and variance analysis of orthogonal test of four factors at three different levels, obtain the affection of speed ,time, feeding material weight ,feeding particle size on degradation efficiency of thermosetting phenolic resin. According to the affection ,the influencing factors could be arranged as follows : speed>feeding particle size> time>feeding material weight,and optimal technology parameters are determined as follows: speed is 3000 r / min, time is 90 min, feeding material weight is 50 g, feeding particle size is 0.425 mm.