Test method for evaluating decontamination effect of detergent

A test method and detergent technology, applied in the direction of measuring device, color/spectral characteristic measurement, instrument, etc., can solve the problems of using large equipment, complicated operation, not suitable for display, etc.

Active Publication Date: 2019-08-13
GUANGZHOU BLUE MOON IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the unintuitive, use of large-scale equipment, complicated operation, unsuitable for display and other problems in the evaluation of the decontamination e

Method used

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  • Test method for evaluating decontamination effect of detergent
  • Test method for evaluating decontamination effect of detergent
  • Test method for evaluating decontamination effect of detergent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] 1) Weigh 0.50 g of pollutant 1 using the reduction method, and evenly smear the pollutant on a pure cotton cloth with a round-headed plastic rod (the cloth is 5 cm in diameter, and the stain is located in the center of the cloth, and the diameter is About 3 cm round), aged in a 45°C oven for 1 hour to obtain a stained cloth;

[0102] 2) Pour 500 ml of deionized water into a transparent glass washing container with a volume of 600 ml, put in the rotor, turn on the magnetic stirrer, adjust the speed to 500 rpm, and add detergent to prepare a detergent solution (concentrated detergent The dosage is 3ml, and the dosage of ordinary detergent is 15ml);

[0103] 3) Put the stained cloth between two transparent plastic rings, clamp and fix the stained piece with clips, put it into the detergent solution for washing, observe the speed of the stain falling off within 10 to 20 minutes of washing, and record the time when the stain finally falls off time;

[0104] 4) Compare the ...

Embodiment 2

[0107] 1) Weigh 0.50 g of pollutant 2 using the reduction method, and evenly smear the pollutant on a pure cotton cloth with a round-headed plastic rod (the cloth is 5 cm in diameter, the stain is located in the center of the cloth, and the diameter is About 3 cm round), aged in a 45°C oven for 1 hour to obtain a stained cloth;

[0108] 2) Pour 500 ml of deionized water into a transparent glass washing container with a volume of 600 ml, put in the rotor, turn on the magnetic stirrer, adjust the speed to 600 rpm, add detergent to prepare a detergent solution (concentrated detergent The dosage is 3ml, and the dosage of ordinary detergent is 15ml);

[0109] 3) Put the stained cloth between two transparent plastic rings, clamp and fix the stained piece with clips, put it into the detergent solution for washing, observe the speed of the stain falling off within 10 to 20 minutes of washing, and record the time when the stain finally falls off time;

[0110] 4) Compare the results ...

Embodiment 3

[0113] 1) Absorb pollutant 3 with a straw, add 2 drops (about 0.07 g) dropwise to the center of a pure cotton cloth piece with a diameter of 5 cm, and age it in an oven at 45°C for 1 hour to obtain a stained cloth;

[0114] 2) Pour 500 ml of deionized water into a transparent glass washing container with a volume of 600 ml, put the rotor in, turn on the magnetic stirrer, adjust the speed to 400 rpm, add detergent to prepare a detergent solution (concentrated detergent The dosage is 3ml, and the dosage of ordinary detergent is 15ml);

[0115] 3) Put the stained cloth between two transparent plastic rings, clamp and fix the stained sheet with clips, put it into the detergent solution for washing, and record the time when the stain finally falls off;

[0116] 4) Compare the results after washing for 15 minutes, evaluate and take pictures, and use computer software to count the number of stain pixels before washing and after washing, and calculate the area ratio of residual stains...

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Abstract

The invention discloses a test method for evaluating decontamination effect of a detergent. The test method comprises the following steps of 1) contaminating the surface of the fabric with contaminants to produce a contaminated fabric contaminated with stains; 2) preparing washing devices including a fixing member, a stirrer and a washing container; 3) adding water and the detergent to be tested to the washing container of the washing device for stirring and mixing to obtain a detergent solution; and 4) fixing the contaminated fabric in the washing container by the fixing member of the washingdevices such that the detergent solution immerses the contaminated fabric, carrying out stirring and washing, and observing the stain change of the contaminated fabric to evaluate the decontaminationeffect of the detergent. The test method provided by the invention has the advantages of being intuitive, quick, simple to operate, easy to display and the like. By applying the test method providedby the invention, the decontamination ability of the detergent can be evaluated, the decontamination effect of the detergent can be demonstrated, and the effect of the detergent claiming to contain protease and amylase can be preliminarily evaluated.

Description

technical field [0001] The invention belongs to the technical field of detergent decontamination performance detection, and in particular relates to a test method for evaluating the decontamination efficacy of detergents. Background technique [0002] The ability of detergent to remove stains is one of the indicators to characterize the washing performance of detergent, and it is also a very important reference for consumers to choose detergent. At present, there are mainly laboratory methods and real washing methods for evaluating the decontamination performance of laundry detergents. [0003] The laboratory evaluation method is carried out in accordance with GB / T 13174 "Detergency of Detergents for Clothing and Determination of Cyclic Washing Performance". In the decontamination test machine, under the specified temperature and washing time, the water with a certain hardness is used to prepare a definite concentration. Detergent solution, wash all kinds of stained test pi...

Claims

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Application Information

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IPC IPC(8): G01N33/00G01N21/29
CPCG01N33/00G01N21/29
Inventor 王宇郑映丹
Owner GUANGZHOU BLUE MOON IND
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