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High Resolution X-Ray Diffraction Study of High-Density Polyethylene Subject to Controlled Stress and Temperature

高密度聚乙烯受控应力和温度的高分辨率 X 射线衍射研究

基本信息

批准号：
531155-2018
负责人：
Kycia, Stefan
金额：
$ 1.82万
依托单位：
University of Guelph
依托单位国家：
加拿大
项目类别：
Engage Grants Program
财政年份：
2018
资助国家：
加拿大
起止时间：
2018-01-01 至 2019-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=656223
关键词：
Resolution Ray Diffraction Study Density

项目摘要

PexCor PEX pipes are manufactured and receive certification for certain service environments (ratings for**pressure, and temperature, proper installation procedure) to ensure adequate rated service life. If a pipe**occasionally fails prematurely PexCor needs to understand the root cause. Unfortunately one cannot install**pressure and temperature sensors in every system to ensure that the service parameters were not exceeded**during operation. X-ray crystallography may give an opportunity to see if there are any resolvable features in**stressed pipe to indicate high stress.**PexCor has the capability to subject PEX pipe to carefully controlled pressure and temperature stresses. A**series of pipe samples with a known stress history will be prepared and provided for the University of Guelph**x-ray diffraction lead by Prof Stefan Kycia. A thorough set of x-ray diffraction and scattering measurements**will be conducted on the samples to see if it is possible to track with the induced stress. X-ray diffraction is**sensitive to the preferred orientation, crystal quality, crystal structure, disorder, amorphous component, and**strain in the high density polyethylene tubing.**Solving this problem will require a thorough x-ray diffraction characterization of the samples. Measurements**will be conducted at the University of Guelph X-Ray Diffraction Laboratory as well as the Brockhouse Sector**at the Canadian Light Source.

PexCor PEX 管道是针对某些使用环境（**压力和温度的额定值、正确的安装程序）制造并获得认证的，以确保足够的额定使用寿命。如果管道**偶尔会过早失效，PexCor 需要了解根本原因。不幸的是，我们无法在每个系统中安装**压力和温度传感器，以确保在运行期间不超过**服务参数。 X 射线晶体学可以让您有机会查看**应力管道中是否有任何可解析的特征来指示高应力。**PexCor 能够使 PEX 管道承受仔细控制的压力和温度应力。 Stefan Kycia 教授领导的圭尔夫大学**X 射线衍射将准备并提供一系列具有已知应力历史的管道样品。将对样品进行一套全面的 X 射线衍射和散射测量**，以查看是否可以跟踪诱发应力。 X 射线衍射对高密度聚乙烯管中的择优取向、晶体质量、晶体结构、无序、无定形成分和**敏感。**解决这个问题需要对样品进行彻底的 X 射线衍射表征。测量**将在圭尔夫大学 X 射线衍射实验室以及加拿大光源的布罗克豪斯部门**进行。