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Method for detecting polystyrene reworked material in extruded polystyrene board

A technology of extruded polystyrene board and polystyrene, which is applied in the field of quality identification and analysis of extruded polystyrene board products of thermal insulation materials, and can solve simple and rough problems

Active Publication Date: 2016-03-02
TIANJIN BUILDING MATERIAL PROD QUALITY SUPERVISION & INSPECTION CENT
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However, these methods are generally relatively simple and rough, and can only be used as an auxiliary met

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  • Method for detecting polystyrene reworked material in extruded polystyrene board
  • Method for detecting polystyrene reworked material in extruded polystyrene board
  • Method for detecting polystyrene reworked material in extruded polystyrene board

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Embodiment Construction

[0032] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0034] A kind of detection method of polystyrene regenerated material in extruded polystyrene board, comprises the following steps:

[0035] (1) Select extruded polystyrene board samples produced by a certain manufacturer with the mass content of polystyrene recycled materials being 0, 5%, 10%, 15%, and 20%, respectively, and cut them respectively and press them on YP-24 Compaction in the machine;

[0036] (2) Take 3-5 mg of the sample obtained in step (1) respectively, put it into an aluminum sample pan, and test it with a Q20 differential scanning calorimeter in an atmosphere of high-purity nitrogen. Raise the temperature from 20°C to 200°C, hold for 1 minute, then drop from 200°C to...

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Abstract

The invention provides a method for detecting a polystyrene reworked material in an extruded polystyrene board. The method comprises a step (1) of cutting pressed pieces; a step (2) of respectively taking 3-5 mg of samples obtained in the step (1) and utilizing a differential scanning calorimeter to perform testing; (3) calibrating glass transition temperature of each sample; (4) determining a standard curve of the glass transition temperature of the extruded polystyrene board along with the content of the polystyrene reworked material; a step (5) of taking 3-5 mg of to-be-detected extruded polystyrene board and repeating the step (2); a step (6) utilizing collected data to calibrate the glass transition temperature of the to-be-detected extruded polystyrene board; and (7) finding from the standard curve a point corresponding to the glass transition temperature obtained in the step (6), wherein the x-coordinate corresponding to the point is the mass percent content of the polystyrene reworked material of the to-be-detected extruded polystyrene board. The method is convenient and quick, the result is accurate, and the difference which is caused to a thermal analysis method serving as the reworked material detection method and is caused by process differences is eliminated.

Description

technical field [0001] The invention belongs to the technical field of quality identification and analysis of extruded polystyrene board products of thermal insulation materials, and in particular relates to a method for detecting recycled polystyrene materials in extruded polystyrene boards. Background technique [0002] The identification method of recycled materials in extruded polystyrene board products is a problem of great concern in the field of building materials at the present stage in the quality control of extruded polystyrene board products. Extruded polystyrene boards are widely used in external thermal insulation systems of thin plastered exterior walls. In order to further promote the development of building energy conservation work and ensure the engineering quality of extruded polystyrene board external thermal insulation thin plastering system, scientific and effective methods must be adopted to detect and control the addition of recycled materials. In the...

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Application Information

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IPC IPC(8): G01N25/20
Inventor 刘彤张鹏宇杨倩刘凤东白锡庆王冬梅
Owner TIANJIN BUILDING MATERIAL PROD QUALITY SUPERVISION & INSPECTION CENT
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