GB/T 5546-2007Resin finishing agent - Determination of the nonvolatile content (English PDF)

1 Scope

This standard specifies the method for determination of non-volatile components of the resin finishing agent.

This standard applies to resin finishing agent - Determination of volatile components.

2 Terms and definitions

The following terms and definitions apply to this standard.

3 instruments and equipment

4 measuring step

Weigh about 1g sample (accurate to 0.0001g), placed dried to constant weighing bottle and add 5mL distilled water gently by hand

Rotation of the sample mixed with water, evenly distributed across the bottom of the weighing bottle. Within 30min placing electrical temperature (105 ± 1) °C of

Close to the upper frame heat oven thermometer around the glass ball, open the blower to keep the air circulating. Maintaining the temperature of (105 ± 1) °C dried

3h. Remove from the oven and immediately weighing bottle was capped and placed in the dryer to cool to room temperature, weighed (accurate to 0.0001g).

5 Results Calculation

Non-volatile content of the resin finishing agent, the mass fraction (%) dollars, according to equation (1).

2- m1 = m1 m1 m1 × 1-

100 (1)

Where.

Value m1 --- dried before weighing bottle and the sample mass, in grams (g);

After drying the value m1 2 --- weighing bottle and the sample mass, in grams (g);

Value m1 --- weighing bottle mass in grams (g).

Reserved results to two decimal places.

6 allows the difference

The results of three parallel determination of the relative error is less than 1%, whichever is the arithmetic average as the test results.