Outdoor aging accelerated test method for high polymer material in dry and hot environment
A polymer material and accelerated test technology, which is applied in the field of outdoor aging accelerated test of polymer materials in dry heat environment, which can solve problems such as changes in the aging mechanism of polymer materials and loss of authenticity of test results.
Pending Publication Date: 2019-02-01
CHINA NAT ELECTRIC APP RES INST
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Problems solved by technology
However, at present, the carbon arc lamp exposure test, fluorescent ultraviolet lamp exposure test, xenon lamp exposure test and solar radiation simulation test recommended by various technical committees related to polymer materials in the International Organization for Standardization (ISO) are all artificially simulated light sources. , there are certain differences with the solar spectrum, especially the difference in the UV cut-off point can lead to changes in the aging mechanism of polymer materials, and the test results lose their authenticity
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[0030] This embodiment is used for the dry heat environment outdoor aging accelerated test method of ethylene-vinyl acetate copolymer macromolecular material (hereinafter abbreviated as EVA), and dry heat environment is Turpan dry heat environment test field, comprises the following steps:
[0031] (1) Determine the standard environmental stress accumulation value under the synergy of radiation and temperature received by the required test polymer material within a certain exposure time, the standard environmental stress accumulation value is the tested polymer material in the relevant accelerated aging test The standard value stipulated in the standard can also be calculated and determined based on the measured data of the natural exposure test of polymer materials in a specific dry heat environment;
[0032] (2) Prepare polymer materials into samples according to the relevant aging acceleration standards, install and fix them on the sample holder, and install the temperature ...
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The invention discloses an outdoor aging accelerated test method for a high polymer material in a dry and hot environment. The outdoor aging accelerated test method comprises the steps that (1) a standard environment stress accumulation value of the high polymer material required to be tested is determined; (2) a sample is prepared from the high polymer material according to the related aging acceleration standard requirements; (3) a control system is adopted to control a test; (4) according to the dry and hot environment test requirements for the high polymer material, a double environment factor stress quantification model is adopted to calculate the actual environment stress accumulation value of the high polymer material; (5) test equipment is started to conduct the test, the temperature and the humidity of a test sample and total irradiation of the sample test surface are measured and recorded, and the actual environment stress accumulation value of the high polymer material is calculated; and (6) when the actual environment stress accumulation value reaches the standard environment stress accumulation value, the whole test is completed. According to the outdoor aging accelerated test method, the outdoor aging accelerated test for the high polymer material in the dry and hot environment can be conducted, and thus quality control over weather resistance of related productsis achieved.
Description
technical field [0001] The invention relates to a material aging test method, in particular to an outdoor aging accelerated test method of a polymer material in a dry heat environment. Background technique [0002] The selection of appropriate test methods and equipment is the basis for carrying out testing and evaluation of material aging performance and service life research. [0003] At present, the natural exposure test method is mainly used, and the environmental conditions are real, but it generally takes a long time, it takes several months to several years or even longer, and due to the environmental conditions such as light, heat, and water in the natural environment, it will happen at any time Changes, the results of experiments carried out at different times have a certain degree of randomness, and the statistical value can only be obtained by repeated experiments. [0004] The laboratory accelerated test obtains the accelerated effect by artificially simulating ...
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CPCG01N17/00G01N17/004
Inventor 陈心欣揭敢新张晓东陶友季王受和曾湘安李慧许楚斯
Owner CHINA NAT ELECTRIC APP RES INST