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Method for testing aging change of polymer material

A technology of polymer materials and raw materials, which is applied in the field of material aging research and testing of polymer material aging changes, can solve the problems of indeterminate aging effect ratio, difficult separation of environmental factors, and difficulties, and achieve the effect of simple implementation

Inactive Publication Date: 2012-10-03
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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Problems solved by technology

[0004] The problem with the above existing methods is that the environmental factors are not easy to separate: such as light and oxygen, heat and oxygen, humidity and heat, light and heat, etc., it is basically impossible to realize the independent aging effect of each environmental factor on the material, and it is also impossible to determine the synergistic effect. Aging effect ratio of each factor when factor or synergistic effect
It is extremely difficult to try to analyze the degree of independent aging effect or the degree of synergistic aging effect of various environmental factors on materials.
Therefore, the general method to study the degree of environmental factors on the aging effect of materials has low evaluation accuracy.
It can only be a rough assessment based on engineering experience, and cannot guide the design of the anti-aging performance of materials and structures

Method used

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  • Method for testing aging change of polymer material

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Embodiment Construction

[0034] The technical scheme of the present invention will be described in further detail below in conjunction with accompanying drawing and embodiment:

[0035] See attached Figure 1 ~ Figure 4 As shown, the method for testing the aging change of polymer materials is characterized in that: the polymer materials applicable to the method refer to plexiglass, plastics, rubber, adhesives and polymer-based composite materials;

[0036] The test steps for this method are:

[0037] ⑴ Prepare materials in two states

[0038] The two states of material are the original material and the aged material, and the aged material is obtained from the original material after the aging test;

[0039] During the implementation process, the materials in the two states should be homogeneous, that is, the initial structure and composition are the same. For homogeneous materials, it should be ensured that the physical and chemical compositions of the materials are the same, and they should be prod...

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Abstract

The invention discloses a method for testing aging change of polymer material. The method unifies the integrated aging effect of environmental factors such as moisture, heat, light, oxygen, corrosive medium and stress on the material as energy transfer from the environment to the material, thereby directly resulting in the difference of destruction work of the material before and after aging. Therefore, the change of the destruction work of the material before and after aging can be utilized to characterize the aging effect degree of environmental factors on the material. Compared with prior art, the technical scheme of the method avoids the technical difficulties unsolved by normal methods, has no need for considering independent aging effect of each environmental factor on the material, no need for determining synergic aging effect factor, and no need for assuming conditions, and is more accurate. The implementation approach is simple and easy.

Description

technical field [0001] The invention relates to a method for testing the aging change of polymer materials, which belongs to the technical field of research methods on material aging. It is a method to study the degree of environmental factors on the aging effect of polymer materials. Background technique [0002] Under the influence of environmental factors for a long time, polymer materials are prone to physical or chemical changes, resulting in a decline in mechanical properties, which is called aging. Thus affecting the service life of the polymer material and its structure. Therefore, the research on the aging mechanism, aging law, aging method, aging degree and aging life prediction of polymer materials has always been a hot issue of concern. [0003] To study the aging effect of environmental factors on materials, generally, the main factors that affect the performance of materials, such as humidity, heat, light, oxygen, corrosive media, stress, etc., are first scre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
Inventor 陈新文裴高林马丽婷邓立伟李晓骏
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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