1 . Characteristic:
1. High chemical stability, low thermal expansion coefficient, high thermal conductivity, and resistance temperature characteristics opposite to metals;
2. High hardness, with a Mohs hardness of 9.5, it is the first material wear-resistant additive;
3. Wear resistant, high temperature resistant, corrosion-resistant, acid and alkali resistant solvents;
4 has good toughness, superior grinding performance, and excellent electrical and thermal conductivity.
2 . Table 1 Particle size range and chemical composition of silicon carbide for kiln furniture
|
purpose |
Particle size range |
Chemical composition (mass fraction)/% |
||
|
SiCnot less than |
F.Cnot greater than |
Fe₂O₃not greater than |
||
|
Silicon carbide fine sand for kiln furniture |
F6-F80 |
98.0 |
0.30 |
0.30 |
|
Silicon carbide fine powder for kiln furniture |
F150-0 |
98.0 |
0.30 |
0.30 |
|
F240-0 |
||||
|
F320-0 |
||||
|
Silicon carbide ultrafine powder for kiln furniture |
F2000 |
97.0 |
0.4 |
0.4 |
3 . Table 2 Particle Size Distribution of Silicon Carbide Fine Section for Kiln Furniture
|
Granularity labeling |
Coarse grained |
Upper grain |
Mid grain |
Lower grain |
Fine grained |
|||||
|
Not passing the sieve number |
Quality% not greater than |
Not passing the sieve number |
Quality% interval |
Not passing the sieve number |
Quality% interval |
Not passing the sieve number |
Quality% interval |
By screening number |
Quality% not greater than |
|
|
F6-F8 |
5 |
10 |
6 |
15-35 |
7 |
25-45 |
8 |
15-35 |
8 |
10 |
|
F8-F10 |
7 |
10 |
8 |
15-35 |
10 |
25-45 |
12 |
15-35 |
12 |
10 |
|
F12-F16 |
10 |
10 |
12 |
15-35 |
14 |
25-45 |
16 |
15-35 |
16 |
10 |
|
F16-F20 |
14 |
10 |
16 |
15-35 |
18 |
25-45 |
20 |
15-35 |
20 |
10 |
|
F20-F24 |
16 |
10 |
18 |
15-35 |
20 |
25-45 |
25 |
15-35 |
25 |
10 |
|
F24-F36 |
20 |
10 |
25 |
15-35 |
30 |
25-45 |
35 |
15-35 |
35 |
10 |
|
F36-F46 |
30 |
10 |
35 |
15-35 |
40 |
25-45 |
45 |
15-35 |
45 |
10 |
|
F60-F80 |
50 |
10 |
60 |
15-35 |
70 |
25-45 |
80 |
15-35 |
80 |
10 |
4 . Table 3 Particle size distribution of silicon carbide fine powder and ultrafine powder used for kiln furniture
|
purpose |
Granularity labeling |
Particle size composition/μm |
||
|
ds0Max |
dssoMedian granularity |
d.90Min |
||
|
Silicon carbide fine powder for kiln furniture |
F150-0 |
150 |
55.0±3.0 |
15.0 |
|
F240-0 |
100 |
40.0±2.5 |
10.0 |
|
|
F320-0 |
50.0 |
25.0±2.0 |
5.0 |
|
|
Silicon carbide ultrafine powder for kiln furniture |
F2000 |
15.0 |
5.0±1.0 |
1.0 |
5 . Application area
1. Modified high-strength nylon material: Nano silicon carbide powder has good compatibility and dispersion in polymer composite materials, as well as good basic bonding. After modification, the tensile strength of high-strength nylon alloy is increased by more than 150% compared to ordinary PA6, and the wear resistance is increased by more than 3 times. Mainly used for polymer parts of armored tracked vehicles, automotive steering components, textile machinery, mining machinery liners, train components, etc., densification can be achieved by sintering at lower temperatures;
2. Modified special engineering plastic polyetheretherketone 2 (PEEK) - Wear resistance: When the dosage is about 5%, it can greatly improve and increase the wear resistance of PEEK (by more than 30% of the original);
3. Application of nano silicon carbide in rubber tires: Adding about 2% nano silicon carbide for modification treatment without changing the original rubber formula, without reducing its original performance and quality,
Its wear resistance can be improved by 20% to 40%. In addition, nano silicon carbide is applied in rubber rollers, printer fixing films, and other wear-resistant, heat dissipating, temperature resistant rubber products;
4. Nano silicon carbide composite coating on metal surface: using nano particles as the second mixed particle, nickel as the matrix metal, forming a high-density and highly adhesive electrodeposited composite coating on the metal surface
Its metal surface has the characteristics of superhard (wear-resistant) and wear-resistant (self-lubricating) high temperature resistance. The microhardness of the composite coating is significantly improved, the wear resistance is increased by 2-3 times, the service life is increased by 3-5 times, the adhesion between the coating and the substrate is increased by 40%, the coverage ability is strong, the coating is uniform, smooth, and fine;
6. Packaging and storage
This product is packaged with inert gas and anti-static properties. It should be sealed and stored in a dry and cool environment. It should not be exposed to air for a long time to prevent moisture and aggregation, which may affect its dispersibility and effectiveness.
Contact us
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Email:tina@fudanewmaterial.com
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