Detection method for solid content of MUF resin

A solid content and detection method technology, which is applied in the direction of measuring devices, phase influence characteristic measurement, and material analysis through optical means, can solve the problems of long time consumption and inability to quickly reflect the resin solid content index, so as to save production resources and solve Effects of detection lag and improvement of detection efficiency

Inactive Publication Date: 2016-08-24
DARE WOOD BASED PANEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method takes a long time and has a certain hysteresis, which cannot quickly reflect the resin solid content index of online production

Method used

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  • Detection method for solid content of MUF resin

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The detection method of MUF resin solid content comprises the steps:

[0029] A. Put the MUF resin sample DY-E2-250M to be tested in a test tube numbered 1, and keep the temperature at 25°C to balance;

[0030] B. The refractive index of the sample was measured with an Abbe refractometer, three groups were measured in parallel, and the average value was 1.4410, and the light source was white light;

[0031] C. Find the X value on the standard working curve, and read the corresponding Y value, which is the solid content of MUF resin is 50.96%.

[0032] Correspondingly, using the drying method specified in GB / T 14074-2006 Wood Adhesives and Resin Test Methods,

[0033] The solid content of this sample was measured to be 50.67%.

Embodiment 2

[0035] The detection method of MUF resin solid content comprises the steps:

[0036] A. Put the MUF resin sample DY-E1-400M to be tested in the test tube numbered 2, and keep the temperature at 25°C to balance;

[0037] B. The refractive index of the sample was measured with an Abbe refractometer, three groups were measured in parallel, and the average value was 1.4414, and the light source was white light;

[0038] C. Find the X value on the standard working curve, and read the corresponding Y value, which is the solid content of MUF resin is 51.17%. Correspondingly, using the drying method specified in GB / T 14074-2006 Wood Adhesives and Resin Test Methods,

[0039] The solid content of this sample was measured to be 51.61%.

Embodiment 3

[0041] The detection method of MUF resin solid content comprises the steps:

[0042] A. Put the MUF resin sample DY-E1-200M to be tested in the test tube numbered 3, and keep the temperature at 25°C to balance;

[0043] B. The refractive index of the sample was measured with an Abbe refractometer, three groups were measured in parallel, and the average value was 1.4448, and the light source was white light;

[0044] C. Find the X value on the standard working curve, and read the corresponding Y value, which is the solid content of MUF resin is 53.03%.

[0045] Correspondingly, using the drying method specified in GB / T 14074-2006 Wood Adhesives and Resin Test Methods, the solid content of this sample was measured to be 52.62%.

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Abstract

The invention belongs to the field of artificial board raw material detection and relates to detection of solid content, in particular to a detection method for solid content of MUF resin. According to the method, firstly, the refractive index serves as an axis X, the solid content serves as an axis Y, and a standard work curve is drawn according to a linear equation with one unknown quantity: y=549.04*740.2; secondly, an Abbe refractometer is used for measuring the refractive index of an MUF resin sample in parallel, the standard work curve is searched for a value X, and a corresponding value Y is read and is the solid content of the MUF resin. According to the method, the solid content of the MUF resin is speculated according to the refractive index measured through the Abbe refractometer, convenience, rapidity, high efficiency and reliability are achieved, detection efficiency is greatly improved, the problem that detection of product solid content performance indicators is lagging in industrial batch production of adhesives is solved, and meanwhile production resources are saved; for MUF resin, the solid content is within a certain range, and there is a good linear relation between the refractive index and the solid content; the solid content of the MUF resin can be predicted by detecting the refractive index of the MUF resin through the obtained tropic equation.

Description

technical field [0001] The invention belongs to the field of detection of wood-based panel raw materials, and relates to the detection of solid content, in particular to a detection method for the solid content of MUF resin. Background technique [0002] At present, the adhesives used in wood-based panels are mainly urea-formaldehyde resins or melamine-modified urea-formaldehyde resins (referred to as MUF resins). Solid content is one of the technical indicators of resins. The mass of a substance as a percentage of the total mass. The test results of resin solid content directly affect the stability of the production process and the quality of the product. Wood adhesives and their resin test methods (GB / T 14074-2006) stipulate that the drying method is a national standard method for testing the solid content of urea-formaldehyde resins, and has corresponding authority. However, this method takes a long time and has a certain hysteresis, which cannot quickly reflect the res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/41
CPCG01N21/4133
Inventor 陈秀兰王丽
Owner DARE WOOD BASED PANEL GRP
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