Colloidalization of molybdenum disulfide powder

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As a solid lubricant, not only purity but also product fineness requirements are required (see Table 1 and Table 2).
Table 1 International molybdenum disulfide particle size standard
Standard
grade
Particle size (μm)
Sieve analysis
+30
-20
+20
-20
+10
-10
+5
-5
+2
-2
+100
-100
+200
-200
+325
-325
International trade standard
Non-micronized
50
20
17
8
3.8
1.2
0
5
20
75
Micropowder
20
47
33
Claymax
1971 standard
Non-micronized
2
0
5
10
85
Micropowder
The average particle size is 0.55~0.85μm (the product is 0.70μm)
Table 2a Domestic MoS 2 particle size standard
Particle size
content(%)
Product Standards
Particle size (μm)
<2
<4
<7.5
<10
>325 mesh
Shanghai Q/HG005
0 #
≥95
5
≤0.5
1 #
≥95
5
≤0.5
2 #
≥95
≤0.5
Northwest Nonferrous Metal Research Institute
Micropowder
≥80 average <0.5μm
ultra
<1μm
Average <0.3μm
Micropowder
≥97μm
Table 2b Domestic MoS 2 particle size standard
Particle size
content(%)
Product Standards
Particle size (μm)
<1
<2
3~5
6~7
>7
Shanghai Q240/80
0
80
10
7.0
3
0
1
90
7.2
2
0.8
2
55
25
15
5
To achieve an average particle size of about 1 μm, conventional colloid mills have been difficult to accomplish this task. A supersonic airflow mill is usually used. Its working process is: the 0.8~1.2MPa airflow generated by the air compressor is sent into the crushing cavity by the nozzle, and the molybdenum disulfide powder is sucked from the feeding port by the high-speed airflow according to the jetting principle, and sent to the crushing cavity. At the Laval nozzle, the flow velocity has reached 2~3 Mach (about 2.625~780m/s), and the molybdenum disulfide particles are crushed by impact, shearing, friction and compression in the nozzle mouth and the crushing chamber. After pulverization, the product is classified in a classification chamber. Unqualified coarse particles are automatically returned to the nozzle and the crushing chamber. The qualified products ground into colloids are discharged into the pulverizer with the airflow, separated by a multi-stage cyclone dust collector and a bag dust collector, and the exhaust gas containing almost no solid powder is emptied, and the collected solids are classified into molybdenum disulfide with different fineness. colloid. Jet pulverization is an emerging technology. In addition to the colloidalization of molybdenum disulfide, it is also an excellent choice when it is required to process into a very fine particle size product such as graphite . Just pay attention to the system's sealing and dust collection.

Isothiazolinones Bactericide

Product name: Isothiazolinones, CMIT/MIT, CIT/MIT

Synonyms: 5-Chloro-2-methyl-4-isothiazolin-3-one

Cas: 26172-55-4


Product Introduction:

Items

Specifications

Appearance

Amber transparent liquid

Active content % ≥

14.0 min

pH value(as it)

1.0-4.0

Density (20℃)g/cm3≥

1.25

CMI/MI (wt %)

2.5 - 4.0


Product name:

Isothiazolinones

Synonyms:

5-Chloro-2-methyl-4-isothiazolin-3-one

CAS:

26172-55-4

MF:

C4H4ClNOS

MW:

149.6

EINECS:

247-500-7

Properties and Usage:

Isothiazolinones is composed of 5-chloro-2-methyl-4-thiazoline-3-ketone (CMI) and 2-methyl-4-thiazoline-3-ketone (MI). The bactericidal effect of Isothiazolinones is carried out through breaking the bond between bacteria and algae protein. When contacted with microbes, Isothiazolinones can quickly inhibit their growth, thus leading to death of these microbes. Isothiazolinones has strong inhibition and biocidal effects on ordinary bacteria, fungi and alga, and has many advantages such as high biocidal efficiency, good degradation, no residual, safety in operation, good compatibleness, good stabilization, low cost in operation. Isothiazolinones can mix with chlorine and most cation, anion, and non-ionic surfactants. It can be together used with

DBNPA 2,2 Dibromo 3 Nitrilopropionamide, TTA Tolyltriazole , Polyaluminum Chloride PAC and PAM Polyacrylamide Flocculant.


Using method:

When used as sludge stripper for grade II, the dosage of 150-300mg/L is preferred, when used as boicide, the dosage of 80-100mg/L is preferred, and charges every 3-7 days. No used together with oxidative fungicidal such as chlorine, and no used in cooling water system containing sulfur. When used together with quaternary amine, the effect will be better. When used as industrial fungicide, the dosage of 0.05-0.4% is preferred.

Package and Storage:

25kg in plastic barrel, or confirmed by clients. Storage for ten months in room shady and dry place.

Safety Protection:

Corrosive, Avoid contact with eye and skin, Wear splash resistant safety goggles and rubber glores .Once contacted , flush with water.



Isothiazolinones Bactericide

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