Company Introduction: Xiongxian Huajiang Paper Plastic Package Co., Ltd. engaged in variety of flexible package. Our head office is located in Xiongan New Area of Hebei Province where is the most hopeful place in Chin...Company Introduction: Xiongxian Huajiang Paper Plastic Package Co., Ltd. engaged in variety of flexible package. Our head office is located in Xiongan New Area of Hebei Province where is the most hopeful place in China for the next thousand years, it is the new developing focus in China. We have got the most convenient transportation, our factory is only 47 miles from Beijing, and 110 mils from the port of Xingang.展开更多
Plastic and polymer additives (PA) have unique rational advantages for various water and food packaging applications. However, their (bio)chemical natures are recently recognized for their negative human health impact...Plastic and polymer additives (PA) have unique rational advantages for various water and food packaging applications. However, their (bio)chemical natures are recently recognized for their negative human health impacts. The major adverse consequence of these additives in consumer products is in the form of endocrine-disruption related health-downgrades. Such findings still remain underappreciated in most parts globally;part of which could be ascribed to fragmented studies towards better understanding on the occurrence, release and migration, human exposure, epidemiology and risk assessment of PA from packaging materials. In addition there is limited and disconnected dissemination of research findings on PA effects and mitigation measures to society at present. In light of appropriateness of this topic, a trans-disciplinary research agenda is required for addressing exposure routes to PA, human health burden and prevention measures. This perspective article discusses important research questions relating to PA, which try to shed light to a grey scientific area and help increase consumers’ awareness and intervention to such exposures.展开更多
Unlike plastic,biomass can also be converted and produce high quality of biofuel.Co-pyrolysis of coconut husk(CH)and laminated plastic packaging(LPP)were done in this study.Synergy between these two feedstock was calc...Unlike plastic,biomass can also be converted and produce high quality of biofuel.Co-pyrolysis of coconut husk(CH)and laminated plastic packaging(LPP)were done in this study.Synergy between these two feedstock was calculated by using thermogravimetric(TGA)and derivative thermogravimetry(DTG)analysis.Different activation energies of the reactions in the co-pyrolysis of CH and LPP were evaluated using the Coats-Redfern method.Results showed an activation energy ranging from 8 to 37 kJ/mol in the different percentage composition of the co-pyrolysis.Also,thermal degradation happens in two-stages in the copyrolysis of CH and LPP,in which CH degrades at the temperature range of 210℃ to 390℃ while LPP degrades in temperatures 400℃-600℃.Co-pyrolysis of CH and LPP can be an alternative for biofuel production and can also reduce the waste problems in the community.展开更多
Due to the high hygroscopicity of the plastic packaging material, the device is inevitably subjected to high temperature or high humidity environment during the production and testing process. After the moisture is ex...Due to the high hygroscopicity of the plastic packaging material, the device is inevitably subjected to high temperature or high humidity environment during the production and testing process. After the moisture is expanded, the internal stress is too large, and the delamination and gold wire breakage are formed. At the same time, due to the difference in the coefficient of thermal expansion (CTE) between the plastic packaging material and the materials such as Si and Cu, it is easy to form delamination under a relatively large shear force. The water vapor remaining in the plastic packaging material is the root cause of delamination, and the reflow process and temperature are the predisposing factors leading to delamination. However, it has been found through experiments that different plastic packaging materials have different hygroscopicity and cohesiveness, and they have obvious improvement effects on delamination.展开更多
Light emitting diodes(LEDs)have accounted for most of the lighting market as the technology matures and costs continue to reduce.As a new type of e-waste,LED is a double-edged sword,as it contains not only precious an...Light emitting diodes(LEDs)have accounted for most of the lighting market as the technology matures and costs continue to reduce.As a new type of e-waste,LED is a double-edged sword,as it contains not only precious and rare metals but also organic packaging materials.In previous studies,LED recycling focused on recovering precious and strategic metals while ignoring harmful substances such as organic packaging materials.Unlike crushing and other traditional methods,hydrothermal treatment can provide an environment-friendly process for decomposing packaging materials.This work developed a closed reaction vessel,where the degradation rate of plastic polyphthalamide(PPA)was close to 100%,with nano-TiO_(2)encapsulated in plastic PPA being efficiently recovered,while metals contained in LED were also recycled efficiently.Besides,the role of water in plastic PPA degradation that has been overlooked in current studies was explored and speculated in detail in this work.Environmental impact assessment revealed that the proposed recycling route for waste LED could significantly reduce the overall environmental impact compared to the currently published processes.Especially the developed method could reduce more than half the impact of global warming.Furthermore,this research provides a theoretical basis and a promising method for recycling other plastic-packaged e-waste devices,such as integrated circuits.展开更多
文摘Company Introduction: Xiongxian Huajiang Paper Plastic Package Co., Ltd. engaged in variety of flexible package. Our head office is located in Xiongan New Area of Hebei Province where is the most hopeful place in China for the next thousand years, it is the new developing focus in China. We have got the most convenient transportation, our factory is only 47 miles from Beijing, and 110 mils from the port of Xingang.
文摘Plastic and polymer additives (PA) have unique rational advantages for various water and food packaging applications. However, their (bio)chemical natures are recently recognized for their negative human health impacts. The major adverse consequence of these additives in consumer products is in the form of endocrine-disruption related health-downgrades. Such findings still remain underappreciated in most parts globally;part of which could be ascribed to fragmented studies towards better understanding on the occurrence, release and migration, human exposure, epidemiology and risk assessment of PA from packaging materials. In addition there is limited and disconnected dissemination of research findings on PA effects and mitigation measures to society at present. In light of appropriateness of this topic, a trans-disciplinary research agenda is required for addressing exposure routes to PA, human health burden and prevention measures. This perspective article discusses important research questions relating to PA, which try to shed light to a grey scientific area and help increase consumers’ awareness and intervention to such exposures.
基金The author would like to acknowledge the big help of the Department of Science and Technology in funding this research.
文摘Unlike plastic,biomass can also be converted and produce high quality of biofuel.Co-pyrolysis of coconut husk(CH)and laminated plastic packaging(LPP)were done in this study.Synergy between these two feedstock was calculated by using thermogravimetric(TGA)and derivative thermogravimetry(DTG)analysis.Different activation energies of the reactions in the co-pyrolysis of CH and LPP were evaluated using the Coats-Redfern method.Results showed an activation energy ranging from 8 to 37 kJ/mol in the different percentage composition of the co-pyrolysis.Also,thermal degradation happens in two-stages in the copyrolysis of CH and LPP,in which CH degrades at the temperature range of 210℃ to 390℃ while LPP degrades in temperatures 400℃-600℃.Co-pyrolysis of CH and LPP can be an alternative for biofuel production and can also reduce the waste problems in the community.
文摘Due to the high hygroscopicity of the plastic packaging material, the device is inevitably subjected to high temperature or high humidity environment during the production and testing process. After the moisture is expanded, the internal stress is too large, and the delamination and gold wire breakage are formed. At the same time, due to the difference in the coefficient of thermal expansion (CTE) between the plastic packaging material and the materials such as Si and Cu, it is easy to form delamination under a relatively large shear force. The water vapor remaining in the plastic packaging material is the root cause of delamination, and the reflow process and temperature are the predisposing factors leading to delamination. However, it has been found through experiments that different plastic packaging materials have different hygroscopicity and cohesiveness, and they have obvious improvement effects on delamination.
基金supported by the National Natural Science Foundation of China(52270132).
文摘Light emitting diodes(LEDs)have accounted for most of the lighting market as the technology matures and costs continue to reduce.As a new type of e-waste,LED is a double-edged sword,as it contains not only precious and rare metals but also organic packaging materials.In previous studies,LED recycling focused on recovering precious and strategic metals while ignoring harmful substances such as organic packaging materials.Unlike crushing and other traditional methods,hydrothermal treatment can provide an environment-friendly process for decomposing packaging materials.This work developed a closed reaction vessel,where the degradation rate of plastic polyphthalamide(PPA)was close to 100%,with nano-TiO_(2)encapsulated in plastic PPA being efficiently recovered,while metals contained in LED were also recycled efficiently.Besides,the role of water in plastic PPA degradation that has been overlooked in current studies was explored and speculated in detail in this work.Environmental impact assessment revealed that the proposed recycling route for waste LED could significantly reduce the overall environmental impact compared to the currently published processes.Especially the developed method could reduce more than half the impact of global warming.Furthermore,this research provides a theoretical basis and a promising method for recycling other plastic-packaged e-waste devices,such as integrated circuits.
