EVALUATION OF THE QUALITY OF MATERIAL RESIN

Mega Vietnam New Materials Research and Development Center is evaluating plastic material criteria based on Vietnamese standards (TCVN), and international standards (ASTM) and gives reliable results

EVALUATION OF THE QUALITY OF MATERIAL RESIN

Currently, Mega Vietnam New Materials Research and Development Center is evaluating plastic material criteria based on Vietnamese standards (TCVN), and international standards (ASTM) and gives reliable results. The criteria for evaluating plastic materials include solid function, density, Brookfield viscosity, and Gardner color scale.

1. Determine the solid

- Evaluation of the solid function of plastic materials based on the standard TCVN 10519:2014.

- How to proceed:

+ Weigh the foil with mass mo (g)

+ Take m1 of the paint sample to be determined (about 1.5-3 g), dry at 120 ℃ to constant weight, and receive m2 (g).

+ Calculation formula: Solid of paint = (m2-m1)/(m1-m0)

2. Determine the ratio

- Assess the density of plastic materials based on the standard TCVN 10237-1: 2013.

- How to proceed:

+ Weigh the density measuring cup, reset it to 0 and pour the plastic sample to be measured into the density measuring cup.

+ Weigh the density measuring cup, reset it to 0 and pour the plastic sample to be measured into the density measuring cup.

+ Weigh the cup containing the sample in m (g)

+ Calculation formula: Density= m/100 (g/ml)

Photo 1: Density meter with a capacity of 100ml

3. Determination of Brookfield viscosity

- Evaluation of Brookfield viscosity of plastic materials based on TCVN 11196:2017.

- How to proceed:

Mix the test sample and adjust the temperature to 25°C.

+ Start the machine, select the needle and scale suitable for the viscosity of the sample.

+ Set parameters on the screen and calibrate the device.

+ After the installation, proceed to measure and press the Measure button on the screen until the set time is finished, read the results and press the Stop button.

Photo 2: Brookfield Viscometer

4. Determine the color of the plastic

- The color assessment of plastic is based on the Gardner color scale according to ASTM- D1544 (2018).

- How to proceed:

+ Stir the sample, then take a sample amount into a transparent glass tube.

+ Compare the sample to be measured with the Gardner palette in natural light.

+ Determine which standard color in the Gardner color scale has the most similar color level to the sample to be measured in terms of brightness and color, and draw conclusions.

Above are some basic introductions on how to evaluate the basic criteria of plastic materials at Mega Vietnam New Materials Research and Development Center. We receive an evaluation of the above criteria and send reliable results, comments, and complete conclusions to customers before official quality appraisal by the authorities.

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Contact

Office address: Floor 2-A2-IA20, Nam Thang Long Urban Area, Pham Van Dong Street,  

Dong Ngac Ward, Bac Tu Liem District, Hanoi City, Vietnam

Research Center: Nhue hamlet - Kim Chung village - Dong Anh district - Hanoi - Viet Nam

Website: megaradcenter.com

Tel/Fax:  (+84) 24 375 89089 / (+84) 24 375 89098

Email: contact@megavietnam.vn