PREMISE: Exploratory Research: An Alternative Process Model for Printed Circuit Board Recycling
前提:探索性研究:印刷电路板回收的替代工艺模型
基本信息
- 批准号:0225927
- 负责人:
- 金额:$ 10万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2002
- 资助国家:美国
- 起止时间:2002-08-01 至 2005-05-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The objectives of this Product Realization and Environmental Manufacturing Innovative Systems (PREMISE) Exploratory Research project are: (1) To conduct exploratory research into the feasibility of an alternative PCB recycling process based on cryogenic decomposition of the PCBs; (2) To establish an interdisciplinary research team that can develop a long-term collaboration that builds on the understanding developed in this project; (3) To evaluate the proposed recycling process against traditional PCB recycling processes in terms of recycle rate economics, energy consumption, and environmental performance; and (4) To examine the feasibility of reusing plastics in the proposed recycling process.The proposed recycling process is cryogenic decomposition of the PCBs. The process takes advantage of the fact that at very low temperatures, polymeric materials become highly brittle. In addition, the residual stresses set-up in the PCB resins due to thermal expansion mismatch between the polymers and other materials on the PCB is expected to lead to a better separation than might otherwise be possible simply due to the embrittlement of the plastics. Actual laboratory experiments will be performed using a cryogenic test system.Wide diffusion of electronic equipment and shortening of product lifecycles have caused a serious problem: how to deal with large quantities of end-of-life or obsolete electronic equipment. While there are various technical challenges for electronic product recovery and recycling, this research focuses on printed circuit boards (PCBs) or printed wiring boards (PWBs). PCBs are primary components in many electronic products built for both military and commercial applications. Due to their complex construction and the consequent complicated mixture of materials, PCB recycling presents a serious challenge to today's industry. The rich content of precious metals provides a strong economic justification for materials recovery and recycling. On the other hand, large amounts of toxic components and fiber-reinforced polymers create difficulties for recycling and adverse environmental impact.
这一产品实现和环境制造创新系统探索性研究项目的目标是:(1)对基于多氯联苯低温分解的替代多氯联苯回收工艺的可行性进行探索性研究;(2)建立一个跨学科研究小组,以便在本项目所形成的认识基础上开展长期合作;(3)从回收率、经济效益、能源消耗及环境效益等方面,评估建议的回收程序与传统的多氯联苯回收程序;及(4)研究建议的回收程序中再用塑料的可行性。该工艺利用了这样一个事实,即在非常低的温度下,聚合物材料变得非常脆。此外,由于聚合物与PCB上的其他材料之间的热膨胀失配而在PCB树脂中建立的残余应力预计将导致比仅仅由于塑料的脆化而可能实现的分离更好的分离。实际的实验室实验将使用低温测试系统进行。电子设备的广泛普及和产品生命周期的缩短引起了一个严重的问题:如何处理大量的报废或过时的电子设备。虽然电子产品回收和再循环存在各种技术挑战,但本研究的重点是印刷电路板(PCB)或印刷线路板(PWB)。PCB是许多用于军事和商业应用的电子产品的主要部件。由于其复杂的结构和随之而来的复杂的材料混合,多氯联苯回收提出了一个严峻的挑战,今天的行业。贵金属的丰富含量为材料回收和再循环提供了强有力的经济理由。另一方面,大量的有毒成分和纤维增强聚合物造成回收困难和不利的环境影响。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Hong-Chao Zhang其他文献
Clinically approved small-molecule drugs for the treatment of rheumatoid arthritis
用于治疗类风湿关节炎的临床批准的小分子药物
- DOI:
10.1016/j.ejmech.2023.115434 - 发表时间:
2023-08-05 - 期刊:
- 影响因子:5.900
- 作者:
Jian-Hui Zhao;Shuai Ma;Chao-Yuan Li;Hong-Chao Zhang;Li-Jie Zhao;Zi-Yan Zhang - 通讯作者:
Zi-Yan Zhang
Investigation of a multiple trigger active disassembly element
- DOI:
10.1016/j.cirp.2012.03.109 - 发表时间:
2012-01-01 - 期刊:
- 影响因子:
- 作者:
Hong-Chao Zhang;John Carrell;Shiren Wang;Derrick Tate;Senay Imam - 通讯作者:
Senay Imam
Experimental study on opto-acoustic nonlinear frequency-mixing technique with separated basic temperature
- DOI:
10.1016/j.ultras.2024.107331 - 发表时间:
2024-07-01 - 期刊:
- 影响因子:
- 作者:
Chen-Yin Ni;Ling Yuan;Yi-Fei Zhang;Kai-Ning Ying;Zhong-Hua Shen;Hong-Chao Zhang - 通讯作者:
Hong-Chao Zhang
Catalyst-and additive-free [3+3] cyclization-aromatization of β,γ-dioxobutanoate with amines for synthesis of p-aminophenols
- DOI:
- 发表时间:
2022 - 期刊:
- 影响因子:
- 作者:
Hang Qian;Cui-Cui Wang;Zi-Chen Shen;Ming-Xue Sun;Hong-Chao Zhang;Shiming Fan;Juan Feng;Shouxin Liu;Zhi-Wei Zhang - 通讯作者:
Zhi-Wei Zhang
Catalyst- and additive-free [3 + 3] cyclization–aromatization of β,γ-dioxobutanoate with amines for synthesis of emp/em-aminophenols
β,γ-二氧代丁酸酯与胺的无催化剂和添加剂的[3 + 3]环化-芳构化用于合成恩帕/恩美-氨基酚
- DOI:
10.1039/d2gc03936b - 发表时间:
2022-01-01 - 期刊:
- 影响因子:9.200
- 作者:
Hang Qian;Cui-Cui Wang;Zi-Chen Shen;Ming-Xue Sun;Hong-Chao Zhang;Shiming Fan;Juan Feng;Shouxin Liu;Zhi-Wei Zhang - 通讯作者:
Zhi-Wei Zhang
Hong-Chao Zhang的其他文献
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{{ truncateString('Hong-Chao Zhang', 18)}}的其他基金
Collaborative Research: Understanding and Optimizing A Supercritical Fluid Process for Recycling of Printed Circuit Boards
合作研究:了解和优化印刷电路板回收的超临界流体工艺
- 批准号:
1133984 - 财政年份:2011
- 资助金额:
$ 10万 - 项目类别:
Continuing Grant
GOALI: Modeling and Optimization of a Responsive Reverse Logistics Channel for Electronic Products
GOALI:电子产品响应式逆向物流渠道的建模和优化
- 批准号:
0423465 - 财政年份:2004
- 资助金额:
$ 10万 - 项目类别:
Standard Grant
Tolerance Graph for Tolerance Control in Process Planning
工艺规划中公差控制的公差图
- 批准号:
9714029 - 财政年份:1997
- 资助金额:
$ 10万 - 项目类别:
Standard Grant
Research Initiation: A Test Bed of Integrated Process Planning Systems
研究启动:集成流程规划系统的试验台
- 批准号:
9211657 - 财政年份:1992
- 资助金额:
$ 10万 - 项目类别:
Continuing Grant
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