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Accelerated aging device for structural sealant and accelerated aging method for structural sealant

An accelerated aging and sealant technology, which is applied in the direction of measuring devices, using repeated force/pulsation force to test the strength of materials, instruments, etc., can solve the problems of small fit, no consideration of stress, low accuracy and precision, etc.

Pending Publication Date: 2018-04-13
GUANGZHOU BAIYUN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the results of artificial accelerated aging are often not completely consistent with the results of natural exposure tests, and even have only a small degree of fit.
[0004] The existing artificial aging devices for silicone structural sealants are mainly based on accelerated aging under the influence of single or double factors, and basically do not consider the influence of stress, but in actual use, silicone structural sealants are under stress Working under the environment, and the stress is constantly changing due to changes in wind pressure and temperature difference. At the same time, polymer materials age faster when they are subjected to fatigue cycles, which leads to the accuracy and precision of the evaluation of the existing artificial aging device for silicone structural sealants. relatively low

Method used

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  • Accelerated aging device for structural sealant and accelerated aging method for structural sealant
  • Accelerated aging device for structural sealant and accelerated aging method for structural sealant
  • Accelerated aging device for structural sealant and accelerated aging method for structural sealant

Examples

Experimental program
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Effect test

Embodiment 1

[0034] see figure 1 , figure 2 As shown, this embodiment relates to an accelerated aging device 10 for structural sealant. The structural sealant accelerated aging device 10 includes an aging simulation box 100, a temperature detection component 200, a light emitting component 300, a temperature regulator, a stretching component, a clamping component and a controller. Wherein the controller can be a PLC, most preferably the controller can be a computer, wherein the computer is installed with tensile cycle testing software.

[0035] The aging simulation box 100 satisfies the following conditions:

[0036] 1) The size of the working chamber is not less than 1000mm×500mm×300mm;

[0037] 2) Temperature range: -150°C—+500°C;

[0038] 3) Temperature deviation: ≤±1.0℃;

[0039] 4) Temperature fluctuation: ≤±0.5℃. For example, the aging simulation box 100 can use Shenzhen Sansi Zongheng SGDX70-150.

[0040] Furthermore, an air-cooled temperature regulator can also be used in t...

Embodiment 2

[0071] According to the accelerated aging method of the structural sealant in Example 1, the silicone structural sealant was prepared according to the provisions of 6.8.1 and 6.8.2 in GB16776-2005 to form a structural sealant test piece A for curing. Both sides of the structural sealant test piece A are glass substrates.

[0072] According to the design requirements of JGJ 102-2003, the standard tensile strength of silicone structural sealant is 0.14MPa. In this example, set the tensile strength value of the tensile drive part to 0.14MPa. The stretching cycle period of the stretching driving part is 8 seconds, that is, the loading stress time is 2 seconds, the holding time is 2 seconds, the stress unloading time is 2 seconds, and the next cycle starts after waiting for 2 seconds.

[0073] The thermostat was fixed at 70°C. Select two UV lamps with a wavelength of 400nm and an energy of 40W / m 2 Xenon lamp, cycle the structural sealant test piece A of the same batch 10000, 200...

Embodiment 3

[0075] According to the accelerated aging method of the structural sealant in Example 1, the silicone structural sealant was prepared according to the provisions of 6.8.1 and 6.8.2 in GB16776-2005 to form a structural sealant test piece B for curing. Both sides of structural sealant test piece B are glass substrates.

[0076] According to the design requirements of JGJ 102-2003, the standard tensile strength of silicone structural sealant is 0.14MPa. In this example, set the tensile strength value of the tensile drive part to 0.21MPa. The stretching cycle period of the stretching driving part is 6 seconds, that is, the loading stress time is 2 seconds, the holding time is 2 seconds, and the stress unloading time is 2 seconds, and the next cycle starts.

[0077] The thermostat was fixed at 90°C. Select two UV lamps with a wavelength of 340nm and an energy of 60W / m 2 Xenon lamp, cycle the structural sealant test piece B of the same batch 10000, 20000, 30000, 50000, 80000, 100...

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Abstract

The invention discloses an accelerated aging device for a structural sealant and an accelerated aging method for the structural sealant. The accelerated aging device for the structural sealant comprises an aging simulating box, a temperature detection part, a light-emitting part, a temperature adjustor, a tensile part, a clamping part and a controller. The clamping part is provided with a first clamp and a second clamp; the tensile part is provided with a first pull rod, a second pull rod, a tensile sensor and a tensile driving part; one end of the first pull rod is connected to the bottom ofthe aging simulating box while the other end of the first pull rod faces upward and is connected to the first clamp; the tensile driving part is connected to the aging simulating box and is connectedto the tensile sensor; the tensile sensor is connected to one end of the second pull rod, the other end of the second pull rod faces downward and is connected to the second clamp, and the controller is electrically connected to the temperature detection part, the light-emitting part, the tensile driving part and the tensile sensor. The evaluating accuracy and precision of the accelerated aging device for the structural sealant are improved.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a structural sealant accelerated aging device and a structural sealant accelerated aging method. Background technique [0002] Structural sealant is an important part of the glass curtain wall, which plays the role of structurally bonding the main body of the building and the glass plate, especially the hidden frame glass curtain wall is widely used. In the actual use process, the structural adhesive is subject to stress and strain caused by the repeated deformation of the substrate panel due to thermal expansion and contraction caused by external wind pressure, its own weight, earthquakes, and temperature changes. With the prolongation of use time, the structural adhesive will deteriorate in strength and deformation ability, which will affect the service life of the curtain wall and even cause safety accidents, such as news reports that glass falling from a high altitude hurts p...

Claims

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Application Information

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IPC IPC(8): G01N3/02G01N3/32G01N17/00
CPCG01N3/02G01N3/32G01N17/00
Inventor 罗银蒋金博黄恒超张冠琦曾容
Owner GUANGZHOU BAIYUN CHEM IND