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Railway vehicle window sealant type selection evaluation method

A rail vehicle and evaluation method technology, which is applied in the field of rail vehicles, can solve the problems such as the inability to select the reliability of rail vehicle windows, good sealants, etc., to make up for the gaps in aging methods and related performance evaluations, improve ride comfort, Guarantee the effect of window sealing environment requirements

Pending Publication Date: 2022-04-15
CRRC QINGDAO SIFANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a method for evaluating the type selection of rail vehicle window sealant, to solve the problem that the adhesive type selection method in the prior art cannot select a reliable sealant suitable for rail vehicle windows.

Method used

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  • Railway vehicle window sealant type selection evaluation method
  • Railway vehicle window sealant type selection evaluation method
  • Railway vehicle window sealant type selection evaluation method

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Embodiment Construction

[0023] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs.

[0025] In the present invention, unless stated otherwise, the used orientation words such as "upper, lower, top, bottom" are usually for the directions shown in the drawings, or for the parts themselves in the vertical, In terms of vertical or gravitational direction; similarly, for the convenience of understanding and description, "inner and outer" refer to the inner and outer relative to the outline of each component itself, but the above orientation words ...

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Abstract

The invention provides a rail vehicle window sealant type selection evaluation method, which comprises the following steps of: primarily selecting an adhesive type, and selecting a low-modulus adhesive conforming to a performance index as the adhesive; testing the bonding performance of each primarily selected adhesive, coating a plurality of adhesive tapes on different types of sample plates by using the adhesive, and sequentially carrying out normal-temperature curing, soaking in water, high-temperature, high-temperature and high-humidity and low-temperature test environments; carrying out artificial accelerated aging performance test on the primarily selected adhesives, wherein the artificial accelerated aging performance test comprises at least one of an ultraviolet aging test, a high-temperature fatigue vibration test, a simulated acid rain soaking test and a high-low temperature damp-heat alternating aging test; and comparing the performance differences of the adhesives, and selecting the adhesive type with the best evaluation performance and the most stable performance as the rail vehicle window sealant. According to the invention, the problem that the adhesive selection method in the prior art cannot select the sealant which is suitable for the rail vehicle window and has good reliability is solved.

Description

technical field [0001] The invention relates to the technical field of rail vehicles, in particular to a type selection and evaluation method for window sealants of rail vehicles. Background technique [0002] Window sealants for rail transit vehicles are subjected to the comprehensive effects of many external factors such as temperature, humidity, sunlight, and various stresses during service, and aging phenomena such as discoloration, cracks, and edge cracks will occur, mechanical properties will decline, and the service life will be reduced. Shortening not only affects the appearance of the vehicle, but also brings certain safety hazards to the operation of the vehicle, and also poses problems for vehicle maintenance and after-sales service. [0003] The conventional adhesive selection process only refers to the performance parameters in the adhesive product specification, and only judges the performance of the adhesive according to the standard test method. After the ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/00G01N17/00G01N3/60G01N3/24
Inventor 张静孙禹李丽何晓龙王浩姜代旬倪强赵民
Owner CRRC QINGDAO SIFANG CO LTD
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