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High-acceleration aging test device and method for high polymer material

A polymer material and aging test technology, which is applied in the field of high-accelerated aging test equipment for polymer materials, can solve the problems of low reflectivity and long test period, achieve high ultraviolet reflectivity, high durability, and expand the number of installations

Active Publication Date: 2021-07-23
CHINA NAT ELECTRIC APP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of structural design and the relatively low reflectivity of ultraviolet light of the reflectors of the current sun-tracking and concentrating accelerated aging test equipment, the test acceleration rate is only 6 to 8 times, and the test cycle is still relatively long.

Method used

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  • High-acceleration aging test device and method for high polymer material
  • High-acceleration aging test device and method for high polymer material
  • High-acceleration aging test device and method for high polymer material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] The high-accelerated aging test device for polymer materials provided in this embodiment includes:

[0079] UV light reflection system 1;

[0080] Sample temperature control system 2;

[0081] Sun Tracking System 3;

[0082] Multi-environmental factors coordinated control system;

[0083] in:

[0084] Such as Figure 1-4 As shown, the main structure of the ultraviolet light reflection system 1 is spherical concave, mainly composed of a concave frame 11 and a fixing frame 12 for fixing the concave frame, and a plurality of reflectors 13 are arranged on the concave frame.

[0085] Such as Figure 5-7 As shown, the sample temperature control system 2 includes a support 21 , a sample stage 22 and a temperature control mechanism 23 . One end of the support 21 is connected to the ultraviolet light reflection system 1, and the other end is provided with a sample stage 22. The sample stage 22 is provided with a sample and a temperature control mechanism 23 for controlling...

Embodiment 2

[0143] Different from Example 1,

[0144] The material of the combined reflective film of the reflective mirror 13 is different.

[0145] Incidence at 8 degrees, HfO 2 / ZrO 2 / SiO 2 Combined high ultraviolet reflective film (band 240 ~ 400nm, average reflectance> 96.3%) as an example, further illustrate the importance of the number of film layers to reflective film ultraviolet reflectance, high reflective bandwidth and durability improvement during structure control, this method Include the following steps:

[0146] (1) Design of reflective film: construct HfO based on optical thin film design software (such as Essential Macleod, Optilayer, TFCalc) 2 / ZrO 2 / SiO 2 Combined UV reflective film, the reflective film structure is divided into three layers, which are the bottom film layer for ultraviolet reflection, the middle film layer and the top film layer for improving durability.

[0147]Specifically, the bottom layer structure is (aHbL) 10 (cHbL) 10 (dHbL) 10 , H is...

Embodiment 3

[0161] Refer to Example 1 for the high-accelerated aging test device for polymer materials provided in this example.

[0162] A method for performing a high-density polyethylene high-accelerated aging test using a high-molecular material high-accelerated aging test device, comprising the following steps:

[0163] 1) Turn on the power, switch the sun tracking system to manual mode through the control box, and lower the equipment sample stage through the vertical rotation device.

[0164] 2) High-density polyethylene is processed into a plate by compression molding, and the melting point is 142°C through a dumbbell knife; the samples are fixed on the sample stage in sequence through the clamping position, and the back of the sample is attached to the sample stage, so that the temperature of the sample can be fully cooled .

[0165] 3) After the sample is fixed, turn on the fan and cooling cycle, and set the temperature upper limit protection at the same time. The upper limit of...

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Abstract

The invention discloses a high-acceleration aging test device for a high polymer material. The device comprises an ultraviolet light reflection system, a sample temperature control system, a sun tracking system, a multi-environmental factor coordination control system and the like; the ultraviolet light reflection system is a spherical concave surface, and can realize efficient light condensing; the surface of a reflector in the ultraviolet light reflection system adopts a combined emission film, the reflection film has high ultraviolet reflectivity, large bandwidth and high durability; and the sample temperature control system controls the temperature through a temperature control mechanism, and the temperature control effect is better. The invention further discloses a method for accelerating aging by using the device. The accelerated aging rate of the device is as high as 30-50 times by tracking the sun and condensing light, and a support is provided for rapid aging evaluation of the high polymer material.

Description

technical field [0001] The invention belongs to the technical field of accelerated aging of polymer materials, and in particular relates to a highly accelerated aging test device and method for polymer materials. Background technique [0002] In the industry, in order to accurately and quickly evaluate the weather resistance of polymer materials, and at the same time meet the requirements of material formulation screening, aging resistance improvement, and life expectancy, people usually need to use artificial accelerated aging experiments to achieve this. Including accelerated aging of xenon lamps, accelerated aging of ultraviolet lamps, accelerated aging of high-pressure / medium-pressure mercury lamps, and aging of carbon arc lamps, etc., certain results and progress have also been achieved. Although the artificial accelerated aging test has a short period, fast timeliness and high reproducibility, there is a big difference between the artificial light source and the natura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
CPCG01N17/004G01N17/002F24S20/30F24S23/72F24S30/452F24S10/502
Inventor 覃家祥彭煌王受和陶友季祁黎王俊
Owner CHINA NAT ELECTRIC APP RES INST
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