Preventing discoloration in paints

The new brush's door color is deeper than the paint itself. Is the paint discolored? The discoloration of paint mainly refers to the discoloration of varnish. The varnish was originally a clear, colorless or very light yellow color, which turned brown or black after discoloration. The color paint also has the phenomenon of discoloration, which is mainly manifested in the darker color of the paint.

The reasons for the discoloration of the paint may be as follows: 1. The ester solvent in the varnish turns black with the iron container after it encounters water.

2, turpentine is easy to generate red brown pigment in the iron barrel.

3, gold and silver powder and varnish prone to acid etching, so that the paint color becomes green, dark, lose luster.

4, the storage period is too long, precipitation discoloration.

The methods of prevention and control are as follows: 1. For shellac varnish, which is most susceptible to discoloration, and is packed in non-metallic containers.

2. Add gold powder and silver powder before using varnish. Do not store it in varnish prematurely.

3, the precipitation of discoloration of the paint, if not a quality problem, can also be used after sufficient stirring.

Keywords: Home decoration construction supervision

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HHCMS-200 Carbon Molecular Sieve
CMS-200 is a new kind of non-polar adsorbent specially designed for extracting nitrogen-rich gas from air. It is suitable for separating nitrogen from air. It has a high adsorption capacity for oxygen and can separate nitrogen from air.
The most notable feature of the carbon molecular sieve is its high gas-producing efficiency, especially the preparation of nitrogen with a purity of less than 99.5%.

It is widely used in large air nitrogen making equipment.


Project parameters

The diameter of:1.0-1.3   1.3-1.5

Packing density:≥660kg/m³

The intensity of particle:≥95

Compressive strength abrasion:≤1%

The moisture content:≤0.5%

Standard packing:20Kg/barrel. 40Kg/barrel. 130Kg/barrel



The adsorption time of test condition was 58s with an average pressure of 1-2s


Adsorption pressure

Nitrogen purity (%)

Yield (Nm3/ h.t.)

Nitrogen recovery rate

 

 

 

0.8MPa

99.9

120

30

99.5

200

37

99

250

41

98

310

45

97

370

47

96

420

50

95

490

55

 

 

0.6MPa

99.9

95

31

99.5

160

38

99

200

43

98

245

46

97

300

49

96

335

51

95

390

56



Pay attention to
1. The nitrogen production equipment can reduce the adsorption temperature to better show its excellent nitrogen production performance under conditions;
2. Pay attention to low temperature drying and seal preservation during storage;

Carbon Molecular Sieve HHCMS-200

Carbon Molecular Sieves CMS200,Molecular Sieve Application,Hhcms Carbon Molecular Sieve,Molecular Sieves Adsorption

Zhejiang Changxing Haihua Chemical Co.,Ltd. , http://www.zjcxhhcms.com