Polycarbosilane (PCS) is a silicone polymer with Si-C bonds as the main chain and active Si-H bonds. It is usually a glassy solid or viscous amber. PCS is the most widely used matrix raw material and ceramic fiberraw material in the field of hot-end components in the national defense industry, andit is also one of the most widely used ceramic precursors. Has a seriesof properties such as high temperature resistance and oxidation resistance, irradiationresistance and corrosion resistance,impact resistance and creep resistance, etc.

Product Specifications

Items	Indicator
Appearance	Colorless or light yellow lumpsand powder
Softening Point	180℃～235℃(Controllable)
Naelement content,μg/g	≤50
Oxygen content ofcracked products	<1.5%
Number averagemolecular weight	1100～1500(Controllable)
Dispersion(Mw/Mn)	<4(Controllable)
Melting process	≤20℃
Ceramic yield	>57%

Polycarbosilane Application areas

product-1015-300

Third generation continuous SiC fibers

The third generation continuous SiC fibers has excellentproperties such as low density, high strength and high modulus,highthermal conductivity,good thermal shock resistance, low specific heatcapacity, creep resistance, strong radiation resistance, wear and corrosionresistance,etc. Especially in the high temperature environment above1450°C, its mechanical properties remain basically unchanged. The thirdgeneration of continuous silicon carbide fibers belongs to the near-stoichiometricof continuous SiC fibers, that is, the C/Si ratio in the fibers is close to 1, thus the high temperature resistanceto oxidation is more than 200℃ higher than the second generation ofcontinuous SiC fibers. The product appearance color is brightblack.

Product Specifications

Serial number	Type of indicator	Technical parameters
1	Bunch sizing rate,%	3301：1.0～2.5
1	Bunch sizing rate,%	3303：0.8～2.0
2	Diameter,μm	12.0±1.0
3	Specification(filaments per bundle)	500
4	Discrete coefficient ofmonofilament diameter,%	＜20
5	Line density,Tex	180±10
6	Density, g/cm3	3.10±0.15
7	Tensile strength ofmonofilament, GPa.	≥2.8
8	Tensile strength of bundle, GPa	≥2.6
9	Discrete coefficient of bundle strength,%	＜10
10	Tensile modulus of elasticity, GPa	≥350
11	Discrete coefficient of tensile modulus ,%	＜10
12	Elongation at break,%	≥0.8
13	Discrete coefficient of elongation at break,%	＜10
14	SiC grain size, nm	＞8
15	Oxygen content, wt%	＜1.0
16	Carbon content, wt%:	30.9±2.0
17	Silicon content, wt%	68.9±2.0
18	Carbon to silicon atomic ratio	1.05±0.10
19	Hightemperature strength retention ratio	1250°C argon, 1h. >90% or retention strength≥2.5GPa
19	Hightemperature strength retention ratio	1250°C air, 1h. >80% or retention strength≥2.5GPa

Silicon carbide fiber Application areas

product-1035-315

Microwave-transparent Continuous Si₃N₄ fibers

Continuous Si3N4 fibers has low density,high strength andhigh mode,wear resistance, corrosion resistance, high temperatureresistance and oxidation resistance, low dielectric constant andlow dielectric dissipation factor (i.e., in the range of 0.3GHz-18GHz, lowelectromagnetic wave reflectivity, low power consumption and hightransmittance) and other excellent properties,especially in the 1400℃high temperature environment,long-term stable work, good chemicalstability,high temperature mechanical properties and microwave-transparentproperties do not decay,the use of temperature is far more than quartzfibers (800 ℃). Fibers appearance color is light yellow,.

Product Specifications

Serial number	Type of indicator	Technical parameters
1	Bunch sizing rate,%	4101：1.5~3.5%
1	Bunch sizing rate,%	4103：0.9~2.9%
2	Diameter,μm	13.0±1.0
3	Specification(filaments per bundle)	500
4	Discrete coefficient ofmonofilament diameter,%	＜20
5	Line density,Tex	155±8
6	Density, g/cm3	2.25±0.10
7	Monofilament tensile strength	≥1.60GPa
8	Bundle tensile strength	≥1.60GPa
9	Discrete coefficient of bundle strength,%	＜10%
10	Tensile elastic modulus	≥140GPa
11	Discrete coefficient of tensile modulus,%	＜10
12	Elongation at break,%	≥0.8
13	Discrete coefficient of elongation at break,%	＜10
14	Oxygen content, wt%	≤3.0%
15	Carbon content, wt%:	≤0.9%, nitrogen content: (37.0±3.0)%;
16	Silicon content, wt%	37.0±3.0
17	Relative dielectric constant	10GHz,＜7
18	Dielectric dissipation factor	10GHz,＜0.005
19	High temperature strength retention rate	1250℃ argon, 1h: >1.30GPa,
19	High temperature strength retention rate	1200℃ air, 1h: >1.20GPa.

Silicon nitride fiber Application areas

product-1035-316

Alumina fiber

The long-term service temperature of alumina continuous fibers can reach about 1200-1300C. The single fiber diameter is about 7-14 microns and does not contain any organic components. It is completely harmless to human health. Its products mainly include: woven fabrics, woven belts, braided ropes, braided sleeves, sewing threads and other textiles, which are used in fireproof and thermal insulation soft potential, ceramic-based and metal-based composite materials. Alumina continuous fiber has high temperature, high strength and oxidation resistance, and is the core material for the production of a new generation of high-end equipment.

Product Specifications

Project	Classification temperature	Melting point	Color	Test weight	Material	Al2O3	Al2O3+SiO2
fiber cotton	1700	1840	White	80	Alumina fiber	95	99.5

Alumina fiber Application areas

product-1038-317

If quality problems occur, we will provide a full refund and bear all shipping costs. Send an inquiry now to get a 10% discount, please contact us via WhatsApp or Email us to discuss.

product-716-224

Link: What are the applications of polycarbosilane products?

Link:What are the characteristics of silicon carbide fiber?

Link:What properties does silicon nitride fiber have?

Link:What are the characteristics and applications of alumina fiber?

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